CN214795131U - Battery power failure detection circuit - Google Patents
Battery power failure detection circuit Download PDFInfo
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- CN214795131U CN214795131U CN202120902341.3U CN202120902341U CN214795131U CN 214795131 U CN214795131 U CN 214795131U CN 202120902341 U CN202120902341 U CN 202120902341U CN 214795131 U CN214795131 U CN 214795131U
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Abstract
The application relates to a battery power failure detection circuit relates to the field of battery detection, and it includes: power VCC, the battery VCC _ BAT that awaits measuring still include: the sampling unit is connected with the battery VCC _ BAT to be detected to acquire the voltage state of the battery VCC _ BAT to be detected, and outputs a sampling signal when no voltage exists at the battery VCC _ BAT terminal to be detected, wherein the sampling signal is a low level signal; the judging unit is connected to the output end of the sampling unit to acquire a sampling signal and responds to the sampling signal to output a control signal; and the alarm unit is connected to the output end of the judgment unit to acquire the control signal and responds to the control signal to perform an alarm action. The injection pump has the advantage that the effect of bringing the injection pump into a good use state is achieved.
Description
Technical Field
The application relates to the field of battery testing, in particular to a battery power failure detection circuit.
Background
At present, with the progress and development of science and technology, the medical intravenous injection pump has replaced traditional manual hand-push injection, uses medical intravenous injection pump to realize trace intravenous administration, possesses the characteristics of accurate, safe, timing, ration of measurement, uses whole process to have the characteristics of even, the steady operation of dosing, and it is adjusted rapidly, conveniently, has significantly reduced artifical input.
The existing injection pump is generally internally provided with a battery, and the injection pump needs to be externally connected with a power supply when in normal use so as to maintain the normal work of the injection pump; the syringe pump is often used in an ambulance or other places without an external power source, and the battery can supply power to the syringe pump so as to maintain the normal operation of the syringe pump.
In view of the above-mentioned related art, the inventor thinks that the defect of poor using state of the syringe pump is easily caused by not knowing the damage condition of the battery in advance.
SUMMERY OF THE UTILITY MODEL
In order to improve the not good problem of syringe pump user state, this application provides a battery power down detection circuit.
The application provides a battery power failure detection circuit adopts following technical scheme:
a battery power failure detection circuit comprises a power supply VCC, a battery VCC _ BAT to be detected, and further comprises: the sampling unit is connected with the battery VCC _ BAT to be detected to acquire the voltage state of the battery VCC _ BAT to be detected, and outputs a sampling signal when no voltage exists at the battery VCC _ BAT terminal to be detected, wherein the sampling signal is a low level signal; the judging unit is connected to the output end of the sampling unit to acquire a sampling signal and responds to the sampling signal to output a control signal; and the alarm unit is connected to the output end of the judgment unit to acquire the control signal and responds to the control signal to perform an alarm action.
By adopting the technical scheme, the sampling unit can detect the battery VCC _ BAT to be detected in real time, and when no voltage exists at the battery VCC _ BAT end to be detected, a low-level sampling signal is formed and is transmitted to the judging unit, and the judging unit responds to the sampling signal to output a control signal to the alarm unit, so that the alarm unit can give an alarm in time, related personnel can be warned to replace the battery in time, and the injection pump can be in a good working state conveniently.
Optionally, the sampling unit includes a first resistor R1, one end of the first resistor R1 is connected to the positive electrode of the battery VCC _ BAT to be tested, and the other end of the first resistor is connected to the input end of the determining unit.
By adopting the technical scheme, when the battery VCC _ BAT to be detected has no voltage, the sampling unit outputs a low-level sampling signal to the judging unit.
Optionally, the sampling unit further includes a first diode D1, an anode of the first diode D1 is connected to an anode of the battery VCC _ BAT to be tested, and a cathode of the first diode D1 is connected to the first resistor R1.
By adopting the technical scheme, the first diode D1 can effectively protect the battery VCC _ BAT to be tested.
Optionally, the determining unit includes a first switch Q1, the first switch Q1 is turned on when the level is low, and the determining unit outputs a control signal to the alarm unit when the first switch Q1 is turned on.
By adopting the technical scheme, when the sampling unit outputs the sampling signal to the judging unit, the first switch tube Q1 is conducted, and the judging unit outputs the control signal to the alarm unit so that the alarm unit gives out a warning.
Optionally, the first switch tube Q1 is a PNP-type triode, an emitter of the first switch tube Q1 is connected to the VCC, a base of the first switch tube Q1 is connected to the first resistor R1, and a collector of the first switch tube Q1 is grounded after being connected to the input end of the alarm unit.
By adopting the technical scheme, the PNP type triode is selected as the third switching tube Q1, so that the judging unit can output a control signal to the alarm unit when receiving the sampling signal; meanwhile, the PNP type triode has the advantages of small package and quick response.
Optionally, the alarm unit includes a buzzer H and/or an indicator light M, an anode of the buzzer H is connected to a collector of the first switch tube Q1, and a cathode of the buzzer H is grounded; the anode of the indicator light M is connected to the collector of the first switching tube Q1, and the cathode of the indicator light M is grounded.
By adopting the technical scheme, when the control unit outputs the control signal, the first switching tube Q1 is in a conducting state, and at the moment, current flows through the buzzer H or the indicator lamp M, so that the buzzer H buzzes or the indicator lamp M emits light, and therefore, the audible or visual warning effect is achieved.
Optionally, the determining unit further includes a super capacitor C, an anode of the super capacitor C is connected to an emitter of the first switching tube Q1, and a cathode of the super capacitor C is grounded.
Through adopting above-mentioned technical scheme, when the power VCC is in normal operating condition, the power VCC can charge super capacitor C, and when the power VCC loses the electricity, super capacitor C is in discharge state to make the judgement unit be in normal operating condition, thereby be convenient for detect the in service behavior of the battery VCC _ BAT that awaits measuring.
Optionally, a second resistor R2 and a second diode D2 are connected in series between the power source VCC and the emitter of the first switching transistor Q1, wherein one end of the second resistor R2 is connected to the power source VCC; the other end of the second resistor R2 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the emitter of the first switch tube Q1; a third resistor R3 is connected between the first resistor R1 and the base of the first switch Q1, a third diode D3 is connected in series to the other end of the third resistor R3, and the anode of the third diode D3 is connected to a power VCC.
By adopting the technical scheme, the second resistor R2, the third resistor R3, the second diode D2 and the third diode D3 can effectively protect the power supply VCC and the battery VCC _ BAT to be tested, and the possibility of direct voltage connection between the power supply VCC and the battery VCC _ BAT to be tested is reduced; a power supply VCC is connected between the first resistor R1 and the base of the first switch tube Q1, and at the moment, if the power supply of the injection pump exists all the time, the buzzer H does not buzz all the time or the indicator light M does not emit light all the time, so that the injection pump works in a normal state; and only when the power supply of the injection pump is turned off and the VCC _ BAT terminal of the battery to be detected has no voltage due to damage and other reasons, the buzzer H buzzes or the indicator lamp M emits light so as to remind related personnel to overhaul or replace the VCC _ BAT terminal of the battery to be detected in time and ensure the normal operation of equipment.
Optionally, the battery power-down detection circuit further includes a test unit, where the test unit includes a second switch tube Q2 and a sixth resistor R6; the input end of the second switch tube Q2 is connected to the BEEP port, when the power supply VCC supplies power, the BEEP port can input a high level signal to the second switch tube Q2, the second switch tube Q2 is conducted at a high level, and when the second switch tube Q2 is conducted, the test unit outputs a test signal to the judgment unit, and the judgment unit responds to the test signal and also outputs a control signal to the alarm unit; one end of the sixth resistor R6 is connected to the base of the first switch Q1, and the other end of the sixth resistor R6 is connected between the third resistor R3 and the base of the first switch Q1.
By adopting the technical scheme, the power supply of the power supply VCC is kept, a BEEP end inputs a high level signal to the test unit, the second switch tube Q2 is in a conducting state at the moment, the level between the sixth resistor R6 and the base electrode of the first switch tube Q1 is pulled down, so that the first switch tube Q1 is conducted, and if the buzzer H does not sound, the possibility that the buzzer H is damaged is indicated, so that the buzzer H can be overhauled or replaced in time.
Optionally, the second switching tube Q2 is an NPN-type triode, a base of the second switching tube Q2 is connected in series with the fourth resistor R4 and then connected to the BEEP terminal, an emitter of the second switching tube Q2 is grounded, a collector of the second switching tube Q2 is connected in series with the fifth resistor R5, and the other end of the fifth resistor R5 is connected to the base of the first switching tube Q1.
By adopting the technical scheme, the fourth resistor R4 and the fifth resistor R5 can effectively protect the second switch tube Q2 so as to reduce the possibility of damaging the second switch tube Q2; meanwhile, the second switch tube is an NPN type triode, so that the test unit can output a test signal to the judgment unit when receiving the high-level signal.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the VCC _ BAT terminal of the battery to be tested has no voltage, the sampling unit outputs a sampling signal to the judging unit, the judging unit responds to the sampling signal to output a control signal to the alarming unit, and the alarming unit responds to the control signal to perform alarming action, so that related personnel can overhaul or replace the VCC _ BAT terminal of the battery to be tested in time, and the injection pump can be maintained to work normally;
2. a BEEP end transmits a high-level signal to a test unit so that the test unit can input a test signal to a judgment unit, the judgment unit can respond the test signal to output a control signal to an alarm unit, at the moment, if the buzzer H buzzes, the buzzer H is in a normal working state, and if the buzzer H does not buzz, the buzzer H is possibly damaged, so that related personnel can replace or maintain the buzzer H in time, and the condition that the service state of a battery VCC _ BAT to be tested cannot be reflected to an equipment user or an operator in time due to damage of the buzzer H is reduced;
3. the power supply VCC is connected between the first resistor R1 and the connection point of the base of the first switch tube Q1, so that the buzzer H can sound only when the injection pump is not connected with the power supply and the battery VCC _ BAT to be detected has no voltage due to damage or other factors, and the possibility of false alarm of battery power failure is effectively reduced.
Drawings
FIG. 1 is a schematic diagram showing a battery power down detection circuit;
fig. 2 is a schematic diagram of a display indicator light.
Description of reference numerals: 1. a sampling unit; 2. a judgment unit; 3. an alarm unit; 4. and a test unit.
Detailed Description
The present application is described in further detail below with reference to figures 1-2 of the drawings.
The embodiment of the application discloses a battery power failure detection circuit.
Referring to fig. 1, a battery power-down detection circuit includes a sampling unit 1, a determination unit 2, an alarm unit 3, and a test unit 4, where the sampling unit 1 is connected to a battery VCC _ BAT to be tested to obtain a service condition of the battery VCC _ BAT to be tested, and outputs a sampling signal when no voltage is applied to a VCC _ BAT terminal of the battery to be tested due to the fact that the battery VCC _ BAT to be tested is damaged or pulled out; the judging unit 2 is connected to the output end of the sampling unit 1 and responds to the sampling signal to output a control signal; the alarm unit 3 is connected to the output end of the judgment unit 2 to obtain a control signal and gives an alarm in response to the control signal; the test unit 4 is connected to the BEEP end, wherein when the power VCC supplies power continuously, the BEEP end can input a high level signal to the test unit 4, the test unit 4 responds to the high level signal to output a test signal to the judgment unit 2, and the judgment unit 2 responds to the test signal and can also output a control signal to the alarm unit 3; in the embodiment of the application, when the injection pump is connected with a power supply, the power supply VCC is 5V voltage formed by converting 220V alternating current input into the injection pump through a voltage conversion chip; when the injection pump is not connected with the power supply, the injection pump is powered by the battery VCC _ BAT to be detected.
The sampling unit 1 can sample the service condition of the battery VCC _ BAT to be detected in real time, when the battery VCC _ BAT to be detected loses power due to damage and the like, the sampling unit 1 outputs a sampling signal to the judging unit 2, the judging unit 2 responds to the sampling signal and outputs a control signal to the alarm unit 3, and the alarm unit 3 responds to the control signal to perform alarm action so as to warn relevant personnel of the service condition of the battery VCC _ BAT to be detected and reduce the possibility that the injection pump cannot be in a good working state due to being carried on a place where a power supply cannot be accessed under the condition that the battery state of the injection pump is poor or the battery does not exist; when the power supply VCC is continuously supplied with power, a BEEP end inputs a high level signal to the test unit 4, so that the test unit 4 outputs a test signal to the judgment unit 2, and the judgment unit 2 outputs a control signal to the alarm unit 3, thereby realizing the test of the alarm unit 3 and reducing the possibility that the VCC _ BAT state of the battery to be tested cannot be predicted in advance due to the damage of the alarm unit 3.
Referring to fig. 1, the sampling unit 1 includes a first resistor R1 and a first diode D1, wherein an anode of the first diode D1 is connected to a battery VCC _ BAT to be tested, and a cathode of the first diode D1 is connected in series with the first resistor R1 and then connected to the determining unit 2; the first diode D1 effectively stabilizes and rectifies voltage of the circuit, and when the battery VCC _ BAT to be tested has no voltage due to being pulled out or damaged, the sampling unit 1 outputs a sampling signal to the judgment unit 2, and the sampling signal is at a low level.
Referring to fig. 1, the determining unit 2 includes a first switch Q1, a second resistor R2, a third resistor R3, a second diode D2, a third diode D3 and a super capacitor C, wherein the first switch Q1 is a PNP-type triode; an emitter of the first switching tube Q1 is connected with the second resistor R2 in series and then is connected with a power supply VCC, a base of the first switching tube Q1 is connected with the first resistor R1, a collector of the first switching tube Q1 is connected with the alarm unit 3, and an output end of the alarm unit 3 is grounded; an anode of the second diode D2 is connected to the second resistor R2, and a cathode of the second diode D2 is connected to an emitter of the first switching tube Q1; one end of the third resistor R3 is connected to the base connection point of the first resistor R1 and the first switching tube Q1, the other end of the third resistor R3 is connected in series with the third diode D3 and then is connected to the power supply VCC, and one end of the third diode D3 connected to the power supply VCC is an anode; the anode of the super capacitor C is connected to the connection point of the second diode D2 and the emitter of the first switch tube Q1, and the cathode of the super capacitor C is grounded.
A power supply is connected to the injection pump, and input alternating current is converted by the voltage conversion chip to form a power supply VCC, wherein the power supply VCC can supply power to the first switch tube Q1, and the power supply VCC can also charge the super capacitor C; the second resistor R2, the third resistor R3, the second diode D2 and the third diode D3 can effectively protect the power supply VCC, and the possibility that the voltage of the power supply VCC and the battery VCC _ BAT to be tested is directly connected is reduced; when the injection pump is not connected to the power supply, the super capacitor C is in a discharging state to supply power to the first switch tube Q1, and the power supply VCC is connected to the setting of the sampling unit 1, so that the battery VCC _ BAT to be detected can supply power to the injection pump, and the first switch tube Q1 can be in a conducting state, so that the judging unit 2 can output a control signal to the alarm unit 3.
Referring to fig. 1 and 2, the alarm unit 3 includes a buzzer H and/or an indicator light M, wherein one end of the buzzer H is connected to a collector of the first switching tube Q1, and the other end of the buzzer H is grounded; one end of the indicator light M is connected to the collector of the first switching tube Q1, and the other end of the indicator light M is grounded; when the judging unit 2 outputs a control signal to the alarm unit 3, that is, when the emitter and the collector of the first switching tube Q1 are conducted, the buzzer H generates a sound or the indicator light M emits light, so as to give a visual warning to the relevant person, and the relevant person can check the service condition of the battery VCC _ BAT to be tested in time.
Referring to fig. 1, the test unit 4 includes a second switch Q2, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6, wherein the second switch Q2 is an NPN-type transistor; the base of the second switch tube Q2 is connected to the BEEP terminal to obtain a high-level signal, the emitter of the second switch tube Q2 is grounded, the collector of the second switch tube Q2 is connected to the fifth resistor R5, and the other end of the fifth resistor R5 is connected to the connection point of the base of the first switch tube Q1; the fourth resistor R4 is connected in series with the connection point between the base of the second switch tube Q2 and the BEEP terminal, one end of the sixth resistor R6 is connected with the connection point between the emitter of the second switch tube Q2 and the grounding point, and the other end of the sixth resistor R6 is connected with the connection point between the fifth resistor R5 and the third resistor R3.
The fourth resistor R4 and the fifth resistor R5 can effectively protect the second switch tube Q2, so as to reduce the possibility of damage to the second switch tube Q2; when the BEEP terminal provides a high-level signal to the second switch tube Q2, the collector and the emitter of the second switch tube Q2 are conducted, the base of the first switch tube Q1 is pulled to a low level, so that the emitter and the collector of the first switch tube Q1 can be conducted, the judging unit 2 can transmit a control signal to the alarm unit 3, and the buzzer H can be sounded or the indicator light M can be lighted; when the power supply VCC is in a continuous power supply state, the buzzer H or the indicator lamp M can be tested through the test unit 4, and a BEEP end transmits a high level signal to the second switch tube Q2; if the buzzer H does not sound or the indicator lamp M does not emit light at the moment, the damage of the buzzer H or the indicator lamp M is possible, and the buzzer H or the indicator lamp M needs to be maintained or replaced in time, so that the possibility that the alarm unit 3 cannot transmit alarm action to related personnel due to the damage of the buzzer H or the indicator lamp M is reduced.
The implementation principle of the battery power failure detection circuit in the embodiment of the application is as follows: when the injection pump is connected to the power supply, the power supply VCC supplies power to the first switch tube Q1, and meanwhile, the super capacitor C can be charged, at the moment, because the emitter and the base of the first switch tube Q1 are both high levels, the first switch tube Q1 is not conducted, and the buzzer H does not sound, namely, when the injection pump is in a power supply connection state, the buzzer H does not sound whether the to-be-detected battery VCC _ BAT is damaged or not, so that the injection pump is in a normal working state.
When the injection pump is not connected with a power supply, if the battery VCC _ BAT to be detected is not damaged, the battery VCC _ BAT to be detected is converted by the voltage conversion chip to form a power supply VCC, the power supply VCC can supply power to the first switch tube Q1 and charge the super capacitor C, at the moment, the first switch tube Q1 is not conducted, and the injection pump is in a normal working state; when the VCC _ BAT end of the battery to be tested has no voltage, the super capacitor C is in a discharging state and supplies power to the first switch tube Q1, and the sampling unit 1 transmits a low-level sampling signal to the judging unit 2 at the moment, so that the emitter and the collector of the first switch tube Q1 are conducted, and finally the buzzer H is buzzed or the indicator light M is made to emit light, so that related personnel can repair or replace the VCC _ BAT end of the battery to be tested in time, and finally the injection pump is in a normal working state.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A battery power-down detection circuit is characterized in that: including power VCC, the battery VCC _ BAT that awaits measuring, still include:
the sampling unit (1) is connected with the battery VCC _ BAT to be detected to acquire the voltage state of the battery VCC _ BAT to be detected, and outputs a sampling signal when no voltage exists at the battery VCC _ BAT terminal to be detected, wherein the sampling signal is a low level signal;
the judging unit (2) is connected to the output end of the sampling unit (1) to obtain a sampling signal, and the judging unit (2) responds to the sampling signal and outputs a control signal;
and the alarm unit (3) is connected to the output end of the judgment unit (2) to acquire the control signal, and the judgment unit (2) responds to the control signal and gives an alarm action.
2. The battery power-down detection circuit of claim 1, wherein: the sampling unit (1) comprises a first resistor R1, one end of the first resistor R1 is connected to the anode of the battery VCC _ BAT to be tested, and the other end of the first resistor R1 is connected to the input end of the judging unit (2).
3. The battery power-down detection circuit of claim 2, wherein: the sampling unit (1) further comprises a first diode D1, the anode of the first diode D1 is connected to the anode of the battery VCC _ BAT to be tested, and the cathode of the first diode D1 is connected to the first resistor R1.
4. The battery power-down detection circuit of claim 2, wherein: the judging unit (2) comprises a first switch tube Q1, the first switch tube Q1 receives the low-level sampling signal to be conducted, and when the first switch tube Q1 is conducted, the judging unit (2) outputs a control signal to the alarm unit (3).
5. The battery power-down detection circuit of claim 4, wherein: the first switch tube Q1 is a PNP type triode, an emitting electrode of the first switch tube Q1 is connected to a power supply VCC, a base electrode of the first switch tube Q1 is connected to a first resistor R1, a collector electrode of the first switch tube Q1 is connected to the alarm unit (3), and the other end of the alarm unit (3) is grounded.
6. The battery power-down detection circuit of claim 5, wherein: the alarm unit (3) comprises a buzzer H and/or an indicator lamp M, one end of the buzzer H is connected to the collector electrode of the first switch tube Q1, and the other end of the buzzer H is grounded; one end of the indicator light M is connected to the collector of the first switching tube Q1, and the other end of the indicator light M is grounded.
7. The battery power-down detection circuit of claim 5, wherein: the judging unit (2) further comprises a super capacitor C, the anode of the super capacitor C is connected to the emitter of the first switch tube Q1, and the cathode of the super capacitor C is grounded.
8. The battery power down detection circuit of claim 7, wherein: a second resistor R2 and a second diode D2 are connected in series between the power supply VCC and the emitter of the first switch tube Q1, wherein one end of the second resistor R2 is connected with the power supply VCC; the other end of the second resistor R2 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the emitter of the first switch tube Q1; a third resistor R3 is connected between the first resistor R1 and the base of the first switch Q1, a third diode D3 is connected in series to the other end of the third resistor R3, and the anode of the third diode D3 is connected to a power VCC.
9. The battery power-down detection circuit of claim 5, wherein: the battery power-down detection circuit further comprises a test unit (4), wherein the test unit (4) comprises a second switch tube Q2 and a sixth resistor R6; the input end of the second switch tube Q2 is connected to the BEEP port, the second switch tube Q2 is conducted at a high level, when the power supply VCC supplies power, the BEEP port can input a high level signal to the second switch tube Q2, and when the second switch tube Q2 is conducted, the sixth resistor R6 outputs a test signal to the judging unit (2), and the judging unit (2) responds to the test signal and also outputs a control signal to the alarm unit (3); one end of the sixth resistor R6 is connected to the base of the first switch Q1, and the other end of the sixth resistor R6 is connected between the third resistor R3 and the base of the first switch Q1.
10. The battery power down detection circuit of claim 9, wherein: the second switch tube Q2 is an NPN-type triode, a base of the second switch tube Q2 is connected in series with the fourth resistor R4 and then connected to the BEEP terminal, an emitter of the second switch tube Q2 is grounded, a collector of the second switch tube Q2 is connected in series with the fifth resistor R5, and the other end of the fifth resistor R5 is connected to a base of the first switch tube Q1.
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| CN202120902341.3U CN214795131U (en) | 2021-04-26 | 2021-04-26 | Battery power failure detection circuit |
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| CN202120902341.3U CN214795131U (en) | 2021-04-26 | 2021-04-26 | Battery power failure detection circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115236534A (en) * | 2022-07-29 | 2022-10-25 | 苏州浪潮智能科技有限公司 | Server RTC battery voltage detection device and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115236534A (en) * | 2022-07-29 | 2022-10-25 | 苏州浪潮智能科技有限公司 | Server RTC battery voltage detection device and detection method |
| CN115236534B (en) * | 2022-07-29 | 2023-11-14 | 苏州浪潮智能科技有限公司 | Device and method for detecting voltage of RTC battery of server |
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