搜尋 圖片 地圖 Play YouTube 新聞 Gmail 雲端硬碟 更多 »
登入
螢幕閱讀器使用者:按一下這個連結即可進入協助工具模式。協助工具模式的基本功能與普通模式相同,但與您的閱讀器搭配運作的效能更好。

專利

  1. 進階專利搜尋
公開號CN103869722 A
出版類型申請
申請書編號CN 201410139119
發佈日期2014年6月18日
申請日期2014年4月8日
優先權日期2014年4月8日
其他公開專利號CN103869722B
公開號201410139119.7, CN 103869722 A, CN 103869722A, CN 201410139119, CN-A-103869722, CN103869722 A, CN103869722A, CN201410139119, CN201410139119.7
發明人关晓丽, 关贤光
申請者广东宝莱特医用科技股份有限公司
匯出書目資料BiBTeX, EndNote, RefMan
外部連結:  中華人民共和國國家知識產權局, 歐洲專利局
Hard startup / shutdown system
CN 103869722 A
摘要
The invention discloses a hard startup / shutdown system. The hard startup / shutdown system comprises a power source, an over-current protection circuit, a startup / shutdown key, a hardware startup circuit, a software shutdown circuit, a hardware compulsory shutdown circuit, a hardware compulsory shutdown time regulating circuit and a key detection circuit. Compared with the prior art, the hard startup / shutdown system has the advantages that hardware startup time is controllable, shutdown states can be detected, the standby state hardly consumes power, and the hard startup / shutdown system is simple, safe and reliable.
聲明所有權(8)  原文語言:中文
1.一种硬开关机系统,其特征在于,包括电源以及过流保护电路、开关机按键、硬件开机电路、软件关机电路、硬件强制关机电路、硬件强制关机时间调节电路和按键检测电路,其中: 所述电源以及过流保护电路:实现后级电路工作异常所出现的短路或耗电过大现象时,达到关断电源保护后级电路的作用; 所述开关机按键:实现手动触发硬件开机信号和触发软关机信号以及硬件强制关机; 所述硬件开机电路:实现手动触发开关机按键后传输开机信号的过程; 所述硬件强制关机时间调节电路:实现强制关机的时间控制; 所述按键检测电路:为控制器实现软关机提供触发信号; 所述软件关机电路:为控制器输出关机信号提供功能实现电路; 所述硬件强制关机电路:当软关机失效时,达到随时准确关机的目的。 A hard-switching system, characterized by including power and over-current protection circuit, switch button, turn circuit hardware, software shutdown circuit, hardware-enforced shutdown circuit, hardware-enforced shutdown time adjustment circuit and key detection circuit, which : the power supply and the overcurrent protection circuit: the circuit after the class to achieve a short-circuit or excessive consumption abnormal phenomenon emerged, to the role of stage circuit protection after power is turned off; the switch button: to achieve manually trigger a hardware boot signal and trigger a soft shutdown signal and hardware forced shutdown; the hardware boot circuit: turn signal transmission to achieve manually trigger the process after switch button; the hardware-enforced shutdown time adjustment circuit: Implement mandatory shutdown time control; the key detection Circuit: soft shutdown controllers provide a trigger signal; the software shutdown circuit: Provides functions to achieve the output circuit for the controller shutdown signal; the hardware-enforced shutdown circuit: When the soft-off fails to achieve the purpose of the shutdown and accurate at all times.
2.根据权利要求1所述的硬开关机系统,其特征在于,所述电源以及过流保护电路具体为:电源为适配器和电池,适配器和电池的输出端分别通过二极管(D20)和二极管(D18)连接自恢复保险丝(Fl),所述自恢复保险丝(Fl)的输出端与功率MOS管(U28)的源极相连;所述功率MOS管(U28)的源极通过电阻(R150)与其栅极相连,所述功率MOS管(U28)的输出端,即漏极接有滤波电容(C75)以及滤波电容(C77),然后与负载相连。 The hard-switching system as claimed in claim 1, wherein said power supply and the overcurrent protection circuit in particular: the power for the adapter and the battery, the output end of the adapter and the battery respectively, through a diode (D20) and a diode ( D18) connected PPTC (Fl), the self-recovery fuse (Fl) and the output of the power MOS (U28) is connected to the source; the power MOS (U28) source through a resistor (R150) and its a gate connected to said power MOS (U28) of the output, i.e., a drain connected with a filter capacitor (C75) and a filter capacitor (C77), and then connected to the load.
3.根据权利要求2所述的硬开关机系统,其特征在于,所述开关机按键(Kl)具体为:其一端连接脚(1、4)与所述功率MOS管(U28)的源极连接,另一端连接脚(2、3)分三路与硬件开机电路、硬件强制关机电路、按键检测电路的输入端并行连接。 The hard-switching system according to claim 2, characterized in that the switch button (Kl) specifically: one end of connecting legs (1,4) of the power MOS (U28) source connect the other end of the connection pins (2,3) in three columns and hardware startup circuit, hardware-enforced shutdown circuit, the input of key detection circuit connected in parallel. ` `
4.根据权利要求3所述的硬开关机系统,其特征在于,所述硬件开机电路具体为:通过所述开关机按键(Kl)的连接脚(2、3)与二极管(D2)的正极连接,所述二极管(D2)负极通过电容(C158 )连接至地,所述二极管(D2 )负极还通过电阻(R96 )与功率MOS管(U16 )的栅极相连,所述功率MOS管(U16)栅极通过电阻(R90)连接至地;所述功率MOS管(U16)源极接地,所述功率MOS管(U16)的漏极与所述功率MOS管(U28)的栅极连接。 According to claim 3, wherein the hard switching system, characterized in that the power circuit is embodied as hardware: a positive electrode through the switch button (Kl) of the connecting leg (2, 3) and the diode (D2) of connection, the diode (D2) and a cathode connected through a capacitor (C158) to ground, said diode (D2) is also connected to the gate of the negative power MOS (U16) via a resistor (R96), the power MOS (U16 ) gate is connected through a resistor (R90) to ground; the power MOS (U16) source grounded, the power MOS (U16) drain the power MOS (U28) are connected to the gate.
5.根据权利要求4所述的硬开关机系统,其特征在于,所述软件关机电路具体为:其一端与主控IO 口相连,另一端直接与三极管(Ql)基极连接,所述三极管(Ql)的基极通过电容(C9)连接至地,所述三极管(Ql)的发射极直接接地,所述三极管(Ql)的集电极通过电阻(R7)与二极管(Dl)负极连接,所述二极管(Dl)的正极与VCC相连,所述三极管(Ql)的集电极还通过电阻(R151)与所述功率MOS管(U16)的栅极连接;所述功率MOS管(U16)的漏极与功率MOS管(U28)的栅极连接,所述功率MOS管(U16)的源极接地。 The hard-switching system as claimed in claim 4, wherein said software shutdown circuit specifically: one end of the IO port is connected to the master, and the other end directly connected with the transistor (Ql) group, said transistor emission (Ql) of the base via a capacitor (C9) is connected to ground, the transistor (Ql) is connected directly to ground, the transistor (Ql) is connected to the collector through a resistor (R7) and a diode (Dl) cathode, the The power MOS (U16) leakage; reference diode (Dl) cathode is connected to VCC, the transistor (Ql) collector through a resistor (R151) with the power MOS (U16) connected to the gate pole and the power MOS (U28) gate connection, a power MOS (U16) source grounded.
6.根据权利要求5所述的硬开关机系统,其特征在于,所述硬件强制关机电路具体为:其输入端通过电阻(R155)与开关机按键(Kl)的连接脚(2、3)连接,所述电阻(R155)还与稳压管(U31)的第二脚连接,所述电阻(R155)还通过电阻(R154)与稳压管(U31)的第一脚连接;所述稳压管(U31)的第一通过电阻(R145)接地,所述稳压管(U31)的第三脚直接接地,所述稳压管(U31)的第二脚通过电容(C168)接地,所述稳压管(U31)的第二脚还通过电阻(R208)接至地,所述稳压管(U31)的第二脚还通过电阻(R207)与二极管(D15)连接;所述二极管(D15)的正极与电容(C170)正极连接;所述电容(C170)负极接地,所述电容(C170)的正极通过电阻(R209)与运放(U9)的第三脚连接,所述电容(C170)的正极还通过电容(C106)接至地;所述运放(U9)的第三脚还通过电阻(R210)连接至地,所述运放(U9)的第四脚接地,所述运放(U9)的第八脚与二极管(D15)的负极连接,所述运放(U9)的第八脚还与二极管(D8)和二极管(D9)的负极连接;所述二极管(D8)的正极与开关机按键(Kl)的连接脚(2、3)相连,所述二极管(D9)的正极与VCC连接;所述运放(U9)的第一脚通过电阻(R158)与三极管(Q12)基极连接;所述三极管(Q12)的基极通过电阻(R211)连接至地,所述三极管(Q12)的发射极接地,所述三极管(Q12)的集电极与所述功率MOS管(U16)的栅极连接;所述运放(U9)的第二脚通过电阻(R213)与稳压管(U43)的第二脚连接;所述的稳压管(U43)的第二脚与自身的第二脚相连,所述稳压管(U43)的第一脚还通过电阻(R212)与开关机按键(Kl)的连接脚(2、3)连接; The hard-switching system according to claim 5, characterized in that the hardware-enforced shutdown circuit in particular: its input through a resistor (R155) and switch button (Kl) connection feet (2,3) connecting a resistor (R155) is also connected to the regulator (U31) in the second leg, said resistor (R155) is also connected to the regulator (U31) in the first leg through a resistor (R154); the steady pressure pipe (U31) first through a resistor (R145) to ground, the regulator (U31) in the third tied directly to ground, the regulator (U31) in the second leg through a capacitor (C168) is grounded, the referred to the regulator (U31) in the second leg through a resistor (R208) to ground, the regulator (U31) in the second leg also diode (D15) is connected through a resistor (R207); the diode ( D15) positive and capacitance (C170) positive connection; a capacitor (C170) negative ground, the cathode of the capacitor (C170) through a resistor (R209) and the op amp (U9) third-pin connector, said capacitor ( C170) positive through capacitor (C106) to ground; the op amp (U9) The third leg is also connected to ground via a resistor (R210), the operational amplifier (U9) The fourth leg to ground, the operational amplifier (U9) The eighth leg of the diode (D15) cathode connection, the operational amplifier (U9) is also connected to the negative eighth pin diode (D8) and diode (D9); said diode (D8) positive and switch button (Kl) connection feet (2,3) connected to the diode (D9) cathode connected to VCC; the op amp (U9) first leg through a resistor (R158) and the transistor ( Q12) connected to the base; said transistor (Q12) through the base emitter resistor (R211) is connected to ground, the transistor (Q12) is grounded, the transistor (Q12) and the collector of the power MOS (U16) are connected to the gate; the op amp (U9) second leg through a resistor (R213) and the regulator (U43) second pin connector; wherein the regulator (U43) in the second leg The second leg is connected with itself, the regulator (U43) in the first leg is also connected through a resistor (R212) and switch button (Kl) connection feet (2,3);
7.根据权利要求6所述的硬开关机系统,其特征在于,所述硬件强制关机时间调节电路具体为:属于硬件强制关机电路的一部分,其关机时间t=RC,即t=R207*C170。 7. The hard-switching system according to claim 6, wherein the hardware-enforced shutdown time adjustment circuit in particular: a hardware forced shutdown of part of the circuit, the shutdown time t = RC, ie, t = R207 * C170 .
8.根据权利要求7所述的硬开关机系统,其特征在于,所述按键检测电路具体为:其输入端通过电阻(R124)连接三极管(Q9)的基极,所述三极管(Q9)的基极通过电容(C109)接至地,所述三极管(Q 9)的集电极接VCC,所述三极管(Q9)的发射极通过电阻(R125)接地,所述三极管(Q9)的发射极还通过电阻(R132)连接微控制单元(MCU)的IO 口,所述微控制单元(MCU)的IO 口通过电阻(R131)下拉至地。 According to claim 7 wherein the hard switching system, characterized in that the key press detecting circuit specifically: an input connected transistor (Q9) the base through a resistor (R124), said transistor (Q9) of base via a capacitor (C109) to ground, the transistor (Q 9) connected to the collector of VCC, the transistor (Q9) emitter through a resistor (R125) to ground, the transistor (Q9) emitter also connected through a resistor (R132) micro control unit (MCU) IO port, the micro control unit (MCU) IO port through a resistor (R131) down to the ground.
說明  原文語言:中文

一种硬开关机系统 A hard switch system

技术领域 FIELD

[0001] 本发明涉及医疗设备领域,确切地说是指一种硬开关机系统。 [0001] The present invention relates to medical equipment, specifically refers to a hard-switching system.

背景技术 BACKGROUND

[0002]目前,在医疗设备的开关机电路中,设计方式一种是硬件开关机,另一种是软件开关机方式,第三种是硬件开关机+软件关机方式。 [0002] Currently, the switching circuitry in the medical device, a way of designing hardware switch, the other is a software switch mode, the third is a hardware + software shutdown mode switch. 第一种是通过电源按钮的按下与断开机械的控制系统电源,控制方式简单且待机电流可达零功耗。 The first is a simple control system power by pressing the power button and disconnect the machine, the control mode and standby current consumption of up to zero. 第二种通过微控制器来控制系统电源的开启与关闭,关闭系统电源后可进入待机状态,仍然会消耗HiA级别或几百uA级别电流,更严重的问题是微控制器死机或瘫痪的情况下,只有断开电池以及外部电源的情况下才能恢复,为产品维护带来极大不便。 The second by the microcontroller to control the system power on and off, after turning off the power to the system to enter standby mode still consumes HiA level or hundreds of uA current level, more serious problem is the case of a microcontroller crash or paralysis , the case only disconnect the battery and external power supply can be restored, for product maintenance caused great inconvenience. 第三种是前两种的结合,这种电路也经过不少的改进,其中有把硬件开关机机械的控制方式改为电路控制,譬如利用触发器良好的取反性来达到替代机械控制系统开启与关闭的目的,稳定性更强了点,但是触发器得时刻耗电。 The third is a combination of the first two, this circuit has also been a lot of improvements, including the hardware switch machines for the control circuit to control, such as the use of trigger good alternative to achieve the inverse of mechanical control systems The purpose of opening and closing, greater stability of the point, but the trigger was always power.

[0003] 随着现代医疗设备技术的提升,也对开关机电路提出了更高的要求:1、一些用户配置数据以及正在处理的关键数据得能够及时加以保存后再进行关机动作,此时机械式立即关机断电的方式不可取;2、在碰到软关机失灵的情况下,得有硬件强制关机,此时MCU控制系统电源的方式不可取;3、做到低功耗,电池使用更持久,此时mA级别或几百uA级别电流的静耗电得加以改进。 [0003] With the improvement of modern medical equipment and technology, but also shut off the circuit put forward higher requirements: 1, some of the user profile data and critical data was being processed in a timely manner can be preserved after the shutdown action, this time machinery style immediately shut power off undesirable manner; 2, in the case of failure encountered soft shutdown, and must have hardware-enforced shutdown, then MCU control system power undesirable manner; 3, so that low-power, battery and more Persistent, then mA level or hundreds uA current level of static power consumption have to be improved.

发明内容 SUMMARY

[0004] 针对上述缺陷,本发明解决的技术问题在于提供一种硬开关机系统,硬件关机时间可控,关机状态可检测,待机几乎零功耗的简单,安全可靠。 [0004] In response to these shortcomings, the present invention is to solve the technical problem is to provide a hard-switching systems, hardware controlled shutdown time, the shutdown state can detect almost zero standby power consumption is simple, safe and reliable.

[0005] 为了解决以上的技术问题,本发明提供的硬开关机系统,包括电源以及过流保护电路、开关机按键、硬件开机电路、软件关机电路、硬件强制关机电路、硬件强制关机时间调节电路和按键检测电路,其中: [0005] In order to solve the above technical problems, hard switching system of the present invention provides, including power and over-current protection circuit, switch button, turn circuit hardware, software shutdown circuit, hardware-enforced shutdown circuit, hardware-enforced shutdown time regulating circuit and key press detecting circuit, wherein:

[0006] 所述电源以及过流保护电路:实现后级电路工作异常所出现的短路或耗电过大现象时,达到关断电源保护后级电路的作用; [0006] The power supply and the overcurrent protection circuit: When the rear stage circuit is short-circuit occurs or the abnormal phenomenon of excessive power consumption, to turn off the power after stage protection circuit action;

[0007] 所述开关机按键:实现手动触发硬件开机信号和触发软关机信号以及硬件强制关机; [0007] The switch button: hardware realization triggered manually turn signal and trigger a soft shutdown signal and hardware forced shutdown;

[0008] 所述硬件开机电路:实现手动触发开关机按键后传输开机信号的过程; [0008] The hardware boot circuit: turn signal transmission to achieve manually trigger the process after switch button;

[0009] 所述硬件强制关机时间调节电路:实现强制关机的时间控制; [0009] The hardware-enforced shutdown time adjustment circuit: Implement mandatory shutdown time control;

[0010] 所述按键检测电路:为控制器实现软关机提供触发信号; [0010] The key detection circuit: provide a trigger signal to the controller to achieve a soft shutdown;

[0011] 所述软件关机电路:为控制器输出关机信号提供功能实现电路; [0011] The software shutdown circuit: the controller output signal functions to achieve the shutdown circuit;

[0012] 所述硬件强制关机电路:当软关机失效时,达到随时准确关机的目的。 [0012] The hardware-enforced shutdown circuit: When the soft-off fails to achieve the purpose of the shutdown and accurate at all times.

[0013] 优选地,所述电源以及过流保护电路具体为:电源为适配器和电池,适配器和电池的输出端分别通过二极管(D20)和二极管(D18)连接自恢复保险丝(Fl),所述自恢复保险丝(Fl)的输出端与功率MOS管(U28)的源极相连;所述功率MOS管(U28)的源极通过电阻(R150)与其栅极相连,所述功率MOS管(U28)的输出端,即漏极接有滤波电容(C75)以及滤波电容(C77),然后与负载相连。 [0013] Preferably, the power supply and the overcurrent protection circuit in particular: the power for the adapter and the battery, the output end of the adapter and the battery are connected via a diode (D20) and a diode (D18) resettable fuse (Fl), the resettable fuse (Fl) and the output of the power MOS (U28) is connected to the source; the power MOS (U28) source through a resistor (R150) and its gate connected to the power MOS (U28) an output terminal, i.e., a drain connected with a filter capacitor (C75) and a filter capacitor (C77), and then connected to the load.

[0014] 优选地,所述开关机按键(Kl)具体为:其一端连接脚(1、4)与所述功率MOS管(U28)的源极连接,另一端连接脚(2、3)分三路与硬件开机电路、硬件强制关机电路、按键检测电路的输入端并行连接。 [0014] Preferably, the switch button (Kl) specifically: one end connected to pin (1,4) is connected with the power MOS (U28) of the source, the other end of the connecting leg (2,3) points three-way power-circuit hardware, hardware-enforced shutdown circuit, the input of key detection circuit connected in parallel.

[0015] 优选地,所述硬件开机电路具体为:通过所述开关机按键(Kl)的连接脚(2、3)与二极管(D2)的正极连接,所述二极管(D2)负极通过电容(C158)连接至地,所述二极管(D2)负极还通过电阻(R96 )与功率MOS管(U16 )的栅极相连,所述功率MOS管(U16 )栅极通过电阻(R90)连接至地;所述功率MOS管(U16)源极接地,所述功率MOS管(U16)的漏极与所述功率MOS管(U28)的栅极连接。 [0015] Preferably, the power circuit hardware specifically: by the switch button (Kl) of the connecting leg (2, 3) and the diode (D2) connected to the positive electrode, said diode (D2) via the capacitor anode ( C158) is connected to ground, said diode (D2) is also the negative electrode through the gate resistor (R96) and the power MOS (U16) is connected, the power MOS (U16) whose gate is connected to ground through a resistor (R90); The power MOS (U16) source grounded, the power MOS (U16) drain the power MOS (U28) are connected to the gate.

[0016] 优选地,所述软件关机电路具体为:其一端与主控IO 口相连,另一端直接与三极管(Ql)基极连接,所述三极管(Ql)的基极通过电容(C9)连接至地,所述三极管(Ql)的发射极直接接地,所述三极管(Ql)的集电极通过电阻(R7)与二极管(Dl)负极连接,所述二极管(Dl)的正极与VCC相连,所述三极管(Ql)的集电极还通过电阻(R151)与所述功率MOS管(U16)的栅极连接;所述功率MOS管(U16)的漏极与功率MOS管(U28)的栅极连接,所述功率MOS管(U16)的源极接地。 [0016] Preferably, the soft-off circuit specifically: one end of the IO port is connected to the master, and the other end directly connected with the transistor (Ql) group, the transistor (Ql) is a base connected via a capacitor (C9) to the ground, the transistor (Ql) emitter directly grounded, the transistor (Ql) collector through a resistor (R7) diode (Dl) cathode is connected with said diode (Dl) cathode is connected to VCC, the described transistor (Ql) collector through a resistor (R151) with the power MOS (U16) gate connected; the power MOS (U16) drain of power MOS (U28) gate connection the power MOS (U16) source grounded.

[0017] 优选地,所述硬件强制关机电路具体为:其输入端通过电阻(R155)与开关机按键(Kl)的连接脚(2、3)连接,所述电阻(R155)还与稳压管(U31)的第二脚连接,所述电阻(R155)还通过电阻(R154)与稳压管(U31)的第一脚连接;所述稳压管(U31)的第一通过电阻(R145)接地,所述稳压管(U31)的第三脚直接接地,所述稳压管(U31)的第二脚通过电容(C168)接地,所述稳压管(U31)的第二脚还通过电阻(R208)接至地,所述稳压管(U31)的第二脚还通过电阻(R207)与二极管(D15)连接;所述二极管(D15)的正极与电容(C170)正极连接;所述电容(C170)负极接地,所述电容(C170)的正极通过电阻(R209)与运放(U9)的第三脚连接,所述电容(C170)的正极还通过电容(C106)接至地;所述运放(U9)的第三脚还通过电阻(R210)连接至地,所述运放(U9)的第四脚接地,所述运放(U9)的第八脚与二极管(D15)的负极连接,所述运放(U9)的第八脚还与二极管(D8)和二极管(D9)的负极连接;所述二极管(D8)的正极与开关机按键(Kl)的连接脚(2、3)相连,所述二极管(D9)的正极与VCC连接;所述运放(U9)的第一脚通过电阻(R158)与三极管(Q12)基极连接;所述三极管(Q12)的基极通过电阻(R211)连接至地,所述三极管(Q12)的发射极接地,所述三极管(Q12)的集电极与所述功率MOS管(U16)的栅极连接;所述运放(U9)的第二脚通过电阻(R213)与稳压管(U43)的第二脚连接;所述的稳压管(U43)的第二脚与自身的第二脚相连,所述稳压管(U43)的第一脚还通过电阻(R212)与开关机按键(Kl)的连接脚(2、3)连接; [0017] Preferably, the hardware-enforced shutdown circuit in particular: its input connected via a resistor (R155) and switch button (Kl) connection feet (2,3), said resistor (R155) but also with regulators Tube (U31) second pin connector, said resistor (R155) through a resistor (R154) and the regulator (U31) first-pin connector; the regulator (U31) first through a resistor (R145 ) ground, the regulator (U31) in the third tied directly to ground, the regulator (U31) in the second leg through a capacitor (C168) is grounded, the regulator (U31) in the second leg also through a resistor (R208) to ground, the regulator (U31) in the second leg also diode (D15) is connected through a resistor (R207); the diode (D15) cathode and capacitor (C170) positive connection; The capacitance (C170) negative ground, positive said capacitor (C170) through a resistor (R209) and the op amp (U9) third-pin connector, the positive of the capacitor (C170) also through a capacitor (C106) connected to land; the op amp (U9) The third leg is also connected to ground via a resistor (R210), the operational amplifier (U9) fourth pin grounded, the operational amplifier (U9) and eighth pin diode ( D15) of the negative connection of the operational amplifier (U9) is also connected to the negative eighth pin diode (D8) and diode (D9); said diode (D8) positive and switch button (Kl) connected foot (2,3) connected to the diode (D9) cathode connected to VCC; the op amp (U9) first leg through a resistor (R158) and the transistor (Q12) connected to the base; a transistor (Q12) The base is connected to ground, the transistor (Q12) through a resistor (R211) is an emitter grounded, the transistor (Q12) and the collector of the power MOS (U16) is connected to a gate; the op amp (U9) The second leg is connected through a resistor (R213) and the regulator (U43) in the second leg; wherein the regulator (U43) in the second leg of their second leg is connected to the regulator Tube (U43) in the first leg is also connected through a resistor (R212) and switch button (Kl) connection feet (2,3);

[0018] 优选地,所述硬件强制关机时间调节电路具体为:属于硬件强制关机电路的一部分,其关机时间t=RC,即t=R207*C170。 [0018] Preferably, the hardware-enforced shutdown time adjustment circuit in particular: a hardware forced shutdown of part of the circuit, the shutdown time t = RC, ie, t = R207 * C170.

[0019] 优选地,所述按键检测电路具体为:其输入端通过电阻(R124)连接三极管(Q9)的基极,所述三极管(Q9)的基极通过电容(C109)接至地,所述三极管(Q9)的集电极接VCC,所述三极管(Q9)的发射极通过电阻(R125)接地,所述三极管(Q9)的发射极还通过电阻(R132)连接微控制单元(MCU)的IO 口,所述微控制单元(MCU)的IO 口通过电阻(R131)下拉至地。 [0019] Preferably, the key press detecting circuit specifically: an input terminal through a resistor (R124) connected to the transistor (Q9) the base of said transistor (Q9) the base via a capacitor (C109) to ground, the said transistor (Q9) connected to the collector of VCC, the transistor (Q9) emitter through a resistor (R125) to ground, the transistor (Q9) is also connected to the emitter of a micro control unit through a resistor (R132) (MCU) of IO port, a micro control unit (MCU) IO port through a resistor (R131) down to the ground. [0020] 与现有技术相比,本发明提供的硬开关机系统,硬件关机时间可控,关机状态可检测,待机几乎零功耗的简单,安全可靠。 [0020] Compared with the prior art, the present invention provides a hard-switching systems, hardware controlled shutdown time, the shutdown state can detect almost zero standby power consumption is simple, safe and reliable.

附图说明 Brief Description

[0021] 图1为本发明实施例中硬开关机系统的原理框图; [0021] Figure 1 is a block diagram illustrating the principles of the invention in hard switching system implementation;

[0022] 图2为本发明实施例中硬开关机系统的电路结构图。 [0022] Figure 2 is a schematic view illustrating a circuit configuration of hard switching system of Fig.

具体实施方式 DETAILED DESCRIPTION

[0023] 为了本领域的技术人员能够更好地理解本发明所提供的技术方案,下面结合具体实施例进行阐述。 [0023] To those skilled in the art can better understand the technical solutions provided by the present invention, the following in connection with specific embodiments set forth.

[0024] 请参见图1和图2,图1为本发明实施例中硬开关机系统的原理框图;图2为本发明实施例中硬开关机系统的电路结构图。 [0024] A block diagram, see Figure 1 and Figure 2, an example of the present invention in hard switching system implementation; Figure 2 is a schematic diagram of the circuit structure in hard switching system implementation.

[0025] 本发明实施例提供的硬开关机系统,包括电源以及过流保护电路、开关机按键、硬件开机电路、软件关机电路、硬件强制关机电路、硬件强制关机时间调节电路和按键检测电路,其中: [0025] The present invention provides patients with hard-switching systems, including power supply and overcurrent protection circuit, switch button, turn circuit hardware, software shutdown circuit, hardware-enforced shutdown circuit, hardware-enforced shutdown time adjustment circuit and the key detection circuit, among them:

[0026] 电源以及过流保护电路:实现后级电路工作异常所出现的短路或耗电过大现象时,达到关断电源保护后级电路的作用;开关机按键:实现手动触发硬件开机信号和触发软关机信号以及硬件强制关机;硬件开机电路:实现手动触发开关机按键后传输开机信号的过程;硬件强制关机时间调节电路:实现强制关机的时间控制;按键检测电路:为控制器实现软关机提供触发信号;软件关机电路:为控制器输出关机信号提供功能实现电路;硬件强制关机电路:当软关机失效时,达到随时准确关机的目的。 [0026] Power and overcurrent protection circuit: the circuit after the class to achieve a short-circuit or consuming excessive abnormal phenomenon that appears, turn off the power to the role of post-stage circuit protection; switch button: hardware realization triggered manually turn signals and trigger a soft shutdown signal and hardware forced shutdown; hardware startup circuit: for manual transmission start signal is triggered after the switch button process; hardware-enforced shutdown time adjustment circuit: Implement mandatory shutdown time control; key detection circuit: for the controller to achieve a soft shutdown provide a trigger signal; software shutdown circuit: Provides functions to achieve a shutdown signal output circuit for the controller; hardware-enforced shutdown circuit: When the soft-off fails to achieve the purpose of the shutdown and accurate at all times.

[0027] 电源以及过流保护电路:电源为适配器和电池,适配器和电池的输出端分别通过二极管D20和二极管D18连接自恢复保险丝F1,自恢复保险丝Fl的输出端与功率MOS管U28的源极相连;功率MOS管U28的源极通过电阻R150与其栅极相连,功率MOS管U28的输出端,即漏极接有滤波电容C75以及滤波电容C77,然后与负载相连; Source of power for the output adapter and battery, adapter and battery are connected resettable fuse F1 through diode D20 and diode D18, resettable fuse Fl of output and power MOS U28 pole: [0027] Power and overcurrent protection circuit connected; a source of power MOS U28 through the resistor R150 and its gate connected to the output of the power MOS U28, that is connected with the drain filter capacitor filter capacitor C75 and C77, and then connected to the load;

[0028] 开关机按键Kl:其一端连接脚1、4与功率MOS管U28的源极连接,另一端连接脚 [0028] switch button Kl: 1,4 feet with one end connected to power MOS source U28 is connected, and the other end connected to the foot

2、3分三路与硬件开机电路、硬件强制关机电路、按键检测电路的输入端并行连接; 2,3 three columns and hardware startup circuit, hardware-enforced shutdown circuit, the input of key detection circuit connected in parallel;

[0029] 硬件开机电路:通过开关机按键Kl的连接脚2、3与二极管D2的正极连接,二极管D2负极通过电容C158连接至地,二极管D2负极还通过电阻R96与功率MOS管U16的栅极相连,功率MOS管U16栅极通过电阻R90连接至地;功率MOS管U16源极接地,功率MOS管U16的漏极与功率MOS管U28的栅极连接; [0029] Hardware Power circuit: through the connection pin connected to the positive switch button Kl 2,3 diode D2, the diode D2 and a cathode connected to ground through a capacitor C158, the diode D2 has the anode through a resistor R96 and a gate power MOS of U16 connected to the power MOS gate U16 is connected to ground via a resistor R90; power MOS source grounded U16, U16 power MOS drain of power MOS gate U28 is connected;

[0030] 软件关机电路:其一端与主控IO 口相连,另一端直接与三极管Ql基极连接,三极管Ql的基极通过电容C9连接至地,三极管Ql的发射极直接接地,三极管Ql的集电极通过电阻R7与二极管Dl负极连接,二极管Dl的正极与VCC相连,三极管Ql的集电极还通过电阻R151与功率MOS管U16的栅极连接;功率MOS管U16的漏极与功率MOS管U28的栅极连接,功率MOS管U16的源极接地; [0030] software shutdown circuit: one end is connected to the master IO port and the other end is connected directly to the transistor Ql base, the base of the transistor Ql is connected to ground through a capacitor C9, Ql transistor emitter directly grounded, transistors Ql set electrode through a resistor R7 and diode Dl connected to the negative diode Dl cathode connected to VCC, the collector of the transistor Ql is also connected to the gate U16 tube through a resistor R151 and power MOS; power MOS drain U16 and U28's power MOS gate is connected, power MOS source U16 is grounded;

[0031] 硬件强制关机电路:其输入端通过电阻R155与开关机按键Kl的连接脚2、3连接,电阻R155还与稳压管U31的第二脚连接,电阻R155还通过电阻R154与稳压管U31的第一脚连接;稳压管U31的第一通过电阻R145接地,稳压管U31的第三脚直接接地,稳压管U31的第二脚通过电容C168接地,稳压管U31的第二脚还通过电阻R208接至地,稳压管U31的第二脚还通过电阻R207与二极管D15连接;二极管D15的正极与电容C170正极连接;电容C170负极接地,电容C170的正极通过电阻R209与运放U9的第三脚连接,电容C170的正极还通过电容C106接至地;运放U9的第三脚还通过电阻R210连接至地,运放U9的第四脚接地,运放U9的第八脚与二极管D15的负极连接,运放U9的第八脚还与二极管D8和二极管D9的负极连接;二极管D8的正极与开关机按键Kl的连接脚2、3相连,二极管D9的正极与VCC连接;运放U9的第一脚通过电阻R158与三极管Q12基极连接;三极管Q12的基极通过电阻R211连接至地,三极管Q12的发射极接地,三极管Q12的集电极与功率MOS管U16的栅极连接;运放U9的第二脚通过电阻R213与稳压管U43的第二脚连接;的稳压管U43的第二脚与自身的第二脚相连,稳压管U43的第一脚还通过电阻R212与开关机按键Kl的连接脚2、3连接; [0031] hardware-enforced shutdown circuit: 2,3 its inputs connected through a resistor R155 and switch button Kl connection feet, resistor R155 is also the regulator U31 and second pin connectors, resistors R154 and R155 also regulated through a resistor The first leg of the connection U31; U31 first regulator to ground via a resistor R145, the third leg of the direct ground regulator U31, U31 regulator's second leg to ground through a capacitor C168, the regulator U31 first two feet also connected to ground via a resistor R208, the regulator U31 second leg is also connected via a resistor R207 and diode D15; D15 diode cathode and an anode connected to the capacitor C170; C170 positive negative ground capacitance, capacitor through a resistor R209 and C170 op amp U9 third-pin connector, the positive capacitor C170 is also connected to ground through a capacitor C106; op amp U9 third leg is also connected to ground via a resistor R210, the op amp U9 fourth foot ground, the op amp's first U9 Eight feet and connected to the negative diode D15, the op amp U9 is also connected to the negative eighth pin diode D8 and D9 of the diode; diode D8 cathode and switch button connections Kl 2,3 feet connected to the anode of the diode D9 VCC connector; op-amp U9 first pin is connected through a resistor R158 and the base of transistor Q12; Q12 is the transistor base is connected to ground via a resistor R211, the emitter of the transistor Q12 is grounded, and the collector of the transistor Q12, power MOS gate U16 connected; op amp U9 second pin through a resistor R213 and the regulator second foot U43 connection; the second leg of the regulator U43 with its second leg is connected, the regulator is also the first leg U43 2,3 connected via a resistor R212 and switch button Kl connection feet;

[0032] 硬件强制关机时间调节电路:属于硬件强制关机电路的一部分,其关机时间t=RC,即t=电阻R207* 电容C170 ; [0032] hardware-enforced shutdown time adjustment circuit: Force shutdown is a hardware part of the circuit, the shutdown time t = RC, ie, t = resistor R207 * capacitor C170;

[0033] 按键检测电路:其输入端通过电阻R124连接三极管Q9的基极,三极管Q9的基极通过电容C109接至地,三极管Q9的集电极接VCC,三极管Q9的发射极通过电阻R125接地,三极管Q9的发射极还通过电阻R132连接微控制单元MCU的IO 口,微控制单元MCU的IO口通过电阻Rl31下拉至地。 [0033] key press detecting circuit: having an input connected to the base of transistor Q9 through a resistor R124 pole, the base of transistor Q9 via a capacitor C109 to ground, the collector of transistor Q9 is connected to VCC, the emitter of transistor Q9 to ground via a resistor R125, Q9 transistor emitter is connected through a resistor R132 micro control unit MCU IO port, micro control unit MCU IO port Rl31 down to ground via a resistor.

[0034] 本实施例中,本发明提供的硬开关机系统的动作过程如下: [0034] In the present embodiment, the operation of the process of the present invention provides hard switching system are as follows:

[0035] I)、硬件开机: [0035] I), hardware boot:

[0036] 未开机时,当开关机按键Kl按下,开关机按键Kl的连接脚2、3接通电源适配器或电池,此时高电平通过二极管D2以及电阻R96导向功率MOS管U16的栅极,此时功率MOS管U16的栅极置高,使得功率MOS管U16导通,其漏极电平置低并导致功率MOS管U28导通,随后VCC得以供电,VCC再经过二极管Dl以及电阻R7、电阻R151来置高功率MOS管的栅极,维持功率MOS管U16处于导通状态,最终实现开机。 [0036] is not turned on, when the switch button is pressed Kl, Kl switch button connections 2,3 foot power adapter or battery, then a high level through the diode D2 and resistor R96-oriented power MOS gate U16's electrode, wherein the power MOS transistor gate U16 is set high, so that power MOS U16 is turned on, the drain is set to a low level and cause the power MOS U28 is turned on, and then to power supply VCC, VCC and then through the diode Dl and a resistor R7, a resistor R151 to the high power MOS gate to maintain power MOS U16 in the conduction state, and ultimately turn.

[0037] 2)、按键检测: [0037] 2), the key test:

[0038] 开机后,当开关机按键Kl按下,产生高电平,通过Rl24开通三极管Q9,随后VCC通过电阻R131与电阻R132进行分压后输出到微控制单元MCU进行采集,检测到高电平即为开关机按键Kl按下;开关机按键Kl松开后,微控制单元MCU采集到的是低电平。 [0038] After the boot, when the switch button is pressed Kl produce high Rl24 opened by the transistor Q9, then VCC through a resistor R131 and R132 resistor divider output post to the micro control unit MCU collection, detected high Kl flat is the switch button is pressed; after the switch button Kl release, micro control unit MCU collected is low.

[0039] 3)、软件关机: [0039] 3), software shutdown:

[0040] 开机后,MCU根据自身要求,可以输出高电平来使三极管Ql导通,然后拉低功率MOS管U16,致使功率MOS管U16截止而达到关闭功率MOS管U28,实现软件关机。 [0040] After the boot, MCU according to their own requirements, you can output high to make the transistor Ql is turned on, then pulled down power MOS U16, U16 causing power MOS shut off and reached power MOS U28, implementing software shutdown.

[0041] 4)、硬件强制关机: [0041] 4), hardware-enforced shutdown:

[0042] 开机后,假如软关机失效或微控制单元MCU死机,可以长按开关机按键K1,电平通分两路流向运放U9的第二脚和第三脚,流向运放U9的第二脚电平通过电阻R212与稳压管U43处理后输出一个固定电平2.5V,该固定电平作为基准电压源输出到运放U9的第二脚;流向运放U9的第三脚电平通过电阻R155、电阻R154、电阻R145与稳压管U31处理后输出 [0042] When turned on, if the soft-off failure or micro control unit MCU crash, you can press the switch button K1, level flows through two routes op amp U9 second leg and the third leg, the flow of the op-amp section U9 Two foot level through a resistor R212 and post-processing the output of the regulator U43 level a fixed 2.5V, the fixed level as the reference voltage source output to the op amp U9 second leg; the flow of the op amp U9 third foot level through a resistor R155, resistor R154, R145 and after resistance regulator U31 processing output

6.25V电平,随后经过电阻R207给电容C170充电,充电电平经过电阻R207、电阻R209与电阻R210分压后输出至运放U9的第三脚,当电平超过运放U9的第二脚基准电压2.5V时,运放U9的第一脚由原来的低电平变为高电平,高电平通过电阻R158开通三极管Q12,由三极管Q12拉低功率MOS管U16的栅极,此时功率MOS管U16截止,从而达到关闭功率MOS管U28,实现硬件强制关机。 6.25V level, then the capacitor C170 through resistor R207, charging level through the resistor R207, R209 and after the resistor voltage divider resistors R210 U9 op amp output to the third leg, when the level exceeds the op amp U9 second leg When the reference voltage 2.5V, the op amp's original first leg U9 low to high, high level through the resistor R158 open transistor Q12, the gate of power MOS transistors Q12 U16 down by this time power MOS U16 deadline to achieve the closed power MOS U28, hardware forced shutdown.

[0043] 关于RC延时电路的补充说明: [0043] On the RC delay circuit added:

[0044] RC延时电路时间的计算,简单的方法就是t=RC,即RC回路的时间常数,在充电时,每过一个t的时间,电容器上电压就上升(l-1/e)约等于0.632倍的输入源电压(即本发明电路中电阻R208上的电压)与电容器电压(本发明电路电容C170上的电压)之差;在本发明电路中为把硬件关机时间控制在t=RC=R208*C170=100*10~3*(33/l(T6)=3.3秒,那么运放U9的第三脚输入电压必须在3.3秒的时间内超过第二脚的输入电压。根据这个理论,合理设置电阻R207、电阻R209、电阻R210的阻值,即可设计出精确可控的硬件关机时间。 RC delay circuit computing time [0044], the simplest way is t = RC, namely the time constant of the RC circuit, charging, each over a period of time t, the capacitor voltage rises (l-1 / e) of about equal to 0.632 times the input source voltage (ie, the voltage across the resistor circuit of the present invention on the R208) and the capacitor voltage (voltage circuit capacitor C170 on the present invention) of the difference; in the present invention, a circuit for controlling the hardware shutdown time t = RC = R208 * C170 = 100 * 10 ~ 3 * (33 / l (T6) = 3.3 seconds, the third operational amplifier U9 pin input voltage must exceed the second foot of the input voltage within 3.3 seconds of time. According to this theory reasonable setting resistor R207, resistor R209, R210 resistance of the resistance, you can design the exact hardware controlled shutdown time.

[0045] 关于待机电流的补充说明: [0045] Additional information about standby current:

[0046] 本电路在关机状态下,实测有少于20uA的静耗电,主要是出自功率MOS管,大小取自上拉电阻R150,如果还需减少静耗电大小,可采取增大阻值的方式,但其关断能力随之降低,所以可根据实际进行调整,而本实施例的电路取其典型值10K。 [0046] The circuit in the off state, there is less than 20uA measured static power consumption, mainly from power MOS size from the pull-up resistor R150, if you need to reduce the size of the static power consumption, can be taken to increase the resistance manner, but decreases its ability to turn-off, it can be adjusted according to the actual, and circuit according to the present embodiment whichever typical 10K.

[0047] 与现有技术相比,本发明提供的硬开关机系统,硬件关机时间可控,关机状态可检测,待机几乎零功耗的简单,安全可靠,具体而言,具有以下优点: [0047] Compared with the prior art, the present invention provides a hard-switching systems, hardware controlled shutdown time, the shutdown state can detect almost zero standby power consumption is simple, safe and reliable, in particular, has the following advantages:

[0048] 1、全部采用分立器件组成,电路简单,运行安全可靠,比现在同功能应用电路有着更低的待功耗,实测低于20uA ; [0048] 1, all using discrete components, the circuit is simple, safe and reliable, than it is now with the functional application circuit has to be lower power consumption, measured less than 20uA;

[0049] 2、本发明为防止软件关机失灵的情况,增加了硬件强制关机,使得产品安全性得以大大提升,维护得到更大方便; [0049] 2, the present invention is to prevent the situation shutdown software failure, increasing the hardware-enforced shutdown, making the product safety can be greatly improved, maintain greater convenience;

[0050] 3、本发明的硬件关机时间可控,t=RC,更适用于现代医疗设备对用户配置数据以及正在处理的关键数据得能够及时加以保存的特殊要求。 [0050] 3, the hardware of the present invention a controlled shutdown time, t = RC, more suitable for modern medical equipment for user configuration data and critical data being processed have special requirements can be saved in a timely manner.

[0051] 对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本发明。 [0051] The previous description of the disclosed embodiments, so that the skilled in the art to make or use the present invention. 对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。 Various modifications to these skilled professional technicians embodiments will be apparent, and the generic principles defined herein may be made without departing from the spirit or scope of the present invention, the realization of the other embodiments. 因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。 Accordingly, the present invention will not be limited to these embodiments shown herein, but is to be accorded the herein consistent with the principles and novel features disclosed widest scope.

專利引用
引用的專利申請日期發佈日期 申請者專利名稱
CN102981425A *2012年11月27日2013年3月20日广东威创视讯科技股份有限公司Startup and shutdown circuit
CN203965830U *2014年4月8日2014年11月26日广东宝莱特医用科技股份有限公司Hard startup/shutdown system
JP5333007B2 * 名稱不詳
被以下專利引用
引用本專利申請日期發佈日期 申請者專利名稱
CN105045169A *2015年6月18日2015年11月11日江苏辰汉电子科技有限公司Multifunctional startup and shutdown circuit and startup and shutdown method
分類
國際專利分類號G05B19/04
法律事件
日期代號事件說明
2014年6月18日C06Publication
2014年7月16日C10Entry into substantive examination
2017年1月4日C14Grant of patent or utility model