CN213023489U - Electric quantity monitoring circuit for intelligent cabinet/electric lock of internet of things - Google Patents
Electric quantity monitoring circuit for intelligent cabinet/electric lock of internet of things Download PDFInfo
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- CN213023489U CN213023489U CN202021713354.8U CN202021713354U CN213023489U CN 213023489 U CN213023489 U CN 213023489U CN 202021713354 U CN202021713354 U CN 202021713354U CN 213023489 U CN213023489 U CN 213023489U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 18
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 86
- 239000003381 stabilizer Substances 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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Abstract
The utility model relates to an electric quantity monitoring circuit for thing allies oneself with intelligent cabinet/electric lock belongs to thing allies oneself with intelligent cabinet/electric lock field, an electric quantity monitoring circuit for thing allies oneself with intelligent cabinet/electric lock, include: the device comprises an electric quantity detection unit, a charging detection unit and an electric quantity display unit; wherein, the detection unit that charges includes: the device comprises a voltage regulating module, a voltage detecting module and a comparison output module; the utility model discloses a monitor the battery power of thing allies oneself with intelligent cabinet/electric lock, when battery power is too low, the battery need charge this moment, and this battery also need discharge, thereby utilize the voltage regulation unit to carry out the vary voltage of input battery voltage, steady voltage and filtering regulation, thereby make input voltage stable, detect input voltage simultaneously, thereby detected signal carries out comparison output, thereby the voltage signal who accords with inputs to the battery, and the voltage signal who does not accord with carries out the readjustment; thereby the life of thing allies oneself with intelligent cabinet/electric lock and battery has been protected.
Description
Technical Field
The utility model relates to an electric quantity monitoring circuit for thing allies oneself with intelligent cabinet/electric lock belongs to thing allies oneself with intelligent cabinet/electric lock field.
Background
The intelligent cabinet/electric lock of the internet of things is mainly applied to safety protection of various cabinets, adopts an NB-IOT narrowband internet of things communication technology, and has the advantages of ultra-low power consumption, mass connection, ultra-strong coverage and ultra-low cost. The temperature, humidity, water immersion, inclination, smoke sensation, door magnetism and other real-time monitoring and alarming functions can be realized according to requirements. The powerful platform supports multiple safe, reliable, convenient modes of unblanking. The intelligent cabinet/electric lock of the internet of things adopts NB-IOT narrowband internet of things communication technology, has the functions of unlocking record reporting, low-power alarm, use record checking and the like, is internally provided with a semiconductor FPC fingerprint module, and can be configured with 20 fingerprints.
Thing among the prior art allies oneself with intelligent cabinet/electric lock, when carrying out the during operation, inside electric quantity monitoring circuit can carry out the survey of thing allies oneself with intelligent cabinet/electric lock battery, the electric quantity of thing allies oneself with intelligent cabinet/electric lock can show through the display, but when battery power is lower, when charging, thing allies oneself with intelligent cabinet/electric lock this moment is in charge-discharge state, inside output voltage is unstable, thereby input/output voltage is undulant big, long-time work, can lead to work load impaired, thereby reduce the life of thing allies oneself with intelligent cabinet/electric lock.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model provides an electric quantity monitoring circuit for thing allies oneself with intelligent cabinet/electric lock, solves the above-mentioned problem.
The technical scheme is as follows: a electric quantity monitoring circuit for an intelligent cabinet/electric lock of the internet of things comprises:
the electric quantity detection unit is used for monitoring the electric quantity of the battery of the intelligent cabinet/electric lock of the Internet of things and transmitting a monitoring signal to the electric quantity display unit and the master control terminal;
the charging detection unit is used for performing voltage stabilization, voltage transformation and filtering on the voltage of the input battery when the battery of the Internet of things intelligent cabinet/electric lock is charged, simultaneously performing voltage regulation, and performing voltage detection and comparison output, so that the input voltage is stable and accords with the working range;
the electric quantity display unit is used for displaying the electric quantity of the battery of the intelligent cabinet/electric lock of the internet of things and is composed of a display screen.
In a further embodiment of the method of the invention,
the voltage regulation module is used for transforming the voltage of the input mains supply, converting alternating current into direct current, stabilizing and filtering the direct current voltage and regulating the voltage so as to output stable working voltage to the battery;
the voltage detection module is used for detecting the output voltage, differentiating the voltage signal, amplifying and stably outputting the voltage signal;
and the comparison output module is used for comparing the detection voltage signals so as to output voltage signals which accord with the working regulation, and the voltage drops which do not accord with the working regulation are output to the voltage regulation module to be regulated again.
In a further embodiment, the voltage regulation module comprises: fuse FU1, transformer TR1, diode D3, diode D4, diode D5, capacitor C3, capacitor C4, capacitor C5, voltage stabilizer U1, resistor R1, triode Q1, triode Q2, capacitor C1, resistor R2, diode D1, diode D2, triode Q3, adjustable resistor RV1, resistor R3, resistor R4 and capacitor C2; wherein, a voltage is input at one end of the fuse FU1, the other end of the fuse FU1 is connected with an input end of the transformer TR1, a voltage is input at an input end of the transformer TR1, an output end of the transformer TR1 is simultaneously connected with an anode of the diode D3, an anode of the diode D4 and an anode of the diode D5, and is grounded, pin 1 of the regulator U1 is simultaneously connected with one end of the capacitor C4 and a cathode of the diode D5, pin 2 of the regulator U1 is simultaneously connected with the other end of the capacitor C4 and one end of the capacitor C5, and is grounded, one end of the capacitor C3 is simultaneously connected with a cathode of the diode D3, one end of the resistor R1 and a cathode of the diode D4, the other end of the capacitor C3 is grounded, a collector of the transistor Q2 is simultaneously connected with one end of the resistor R1 and a collector of the transistor Q1, a base of the transistor Q2 is connected to one end of the capacitor C1, the other end of the resistor R1 and a collector of the transistor Q3, an emitter of the transistor Q2 is connected to a base of the transistor Q1, an emitter of the transistor Q3 is connected to one end of the resistor R2 and a positive electrode of the diode D1, a negative electrode of the diode D1 is connected to a positive electrode of the diode D2, an emitter of the transistor Q1 is connected to the other end of the resistor R2, one end of the resistor R3 and one end of the capacitor C2, a base of the transistor Q3 is connected to a control end of the adjustable resistor RV1, one end of the adjustable resistor RV1 is connected to the other end of the resistor R3, the other end of the adjustable resistor RV1 is connected to one end of the resistor R4, and the other end of the capacitor C1 is connected to the other end of the capacitor C5, one end of the capacitor C5, and the other end of, The No. 3 pin of the voltage stabilizer U1 is connected with the cathode of the diode D2, the cathode of the diode D2 is grounded, the other end of the resistor R4 is connected with the cathode of the diode D2 and the other end of the capacitor C2, and voltage is output from two ends of the capacitor C2.
In a further embodiment, the voltage detection module comprises: the circuit comprises an integrated circuit U3, a resistor R9, a resistor R11, a capacitor C6, a triode Q5, a resistor R12, a capacitor C7, a triode Q6, a resistor R10 and a capacitor C8; wherein, pin No. 5 of the integrated circuit U3 is connected with one end of the capacitor C7, pin No. 2 of the integrated circuit U3 is connected with the collector of the transistor Q6 and pin No. 4 of the integrated circuit U3 at the same time, pin No. 8 of the integrated circuit U3 is connected with one end of the resistor R9 and pin No. 4 of the integrated circuit U3 at the same time and inputs an operating voltage, the base of the transistor Q6 is connected with one end of the resistor R10 and one end of the capacitor C8 at the same time, the emitter of the transistor Q6 is connected with the other end of the resistor R10 and the other end of the capacitor C7 at the same time, pin No. 1 of the integrated circuit U3 is connected with one end of the capacitor C6 and the other end of the capacitor C7 at the same time, pin No. 6 of the integrated circuit U3 is connected with the other end of the capacitor C6, pin No. 7 of the integrated circuit U3 is connected with the other end of the resistor R9 and the pin No. 6 of the integrated circuit U3, the 3 # pin of the integrated circuit U3 is connected with one end of the resistor R11, the base of the triode Q5 is connected with the other end of the resistor R11, the emitter of the triode Q5 is grounded, the collector of the triode Q5 is connected with one end of the resistor R12 and outputs signals, and the other end of the capacitor C8 is connected with the other end of the resistor R12 and inputs signals.
In a further embodiment, the comparison output module comprises: the circuit comprises a resistor R5, a resistor R6, a voltage stabilizing diode D6, a resistor R8, a resistor R7, a triode Q4 and a comparator U2A; wherein, pin No. 3 of the comparator U2A is connected to one end of the resistor R6 and the cathode of the zener diode D6 at the same time and inputs a signal, pin No. 2 of the comparator U2A is connected to one end of the resistor R5, pin No. 1 of the comparator U2A is connected to one end of the resistor R8 and one end of the resistor R7 at the same time, the other end of the resistor R5 is connected to the other end of the resistor R6 and pin No. 4 of the comparator U2A at the same time, the base of the transistor Q4 is connected to the other end of the resistor R7, the other end of the resistor R8 is connected to the collector of the transistor Q4 and pin No. 4 of the comparator U2A at the same time and outputs a signal, and pin No. 8 of the comparator U2A is connected to the anode of the zener diode D6 and the emitter of the transistor Q4 at the same time and outputs a signal.
In a further embodiment, integrated circuit U3 is model NE 555.
Has the advantages that: the utility model discloses a monitor the battery power of thing allies oneself with intelligent cabinet/electric lock, when battery power is too low, the battery need charge this moment, and this battery also need discharge, thereby utilize the voltage regulation unit to carry out the vary voltage of input battery voltage, steady voltage and filtering regulation, thereby make input voltage stable, detect input voltage simultaneously, thereby detected signal carries out comparison output, thereby the voltage signal who accords with inputs to the battery, and the voltage signal who does not accord with carries out from new pressure regulating; thereby the utility model discloses can stabilize the voltage that thing allies oneself with intelligent cabinet/electric lock goes on simultaneously in the work of charging and discharging, and very big protection the life of the life thing of thing allies oneself with intelligent cabinet/electric lock battery allies oneself with the life of intelligent cabinet/electric lock, reduce thing and allies oneself with intelligent cabinet/electric lock and damage the probability.
Drawings
Fig. 1 is a circuit diagram of the voltage regulation module of the present invention.
Fig. 2 is a circuit diagram of the voltage detection module of the present invention.
Fig. 3 is a circuit diagram of the comparison output module of the present invention.
Fig. 4 is a schematic circuit diagram of the charging detection unit of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these details; in other instances, well-known features have not been described in order to avoid obscuring the present invention.
A electric quantity monitoring circuit for an intelligent cabinet/electric lock of the internet of things comprises: .
As shown in fig. 1, the voltage regulation module includes: fuse FU1, transformer TR1, diode D3, diode D4, diode D5, capacitor C3, capacitor C4, capacitor C5, voltage stabilizer U1, resistor R1, triode Q1, triode Q2, capacitor C1, resistor R2, diode D1, diode D2, triode Q3, adjustable resistor RV1, resistor R3, resistor R4 and capacitor C2.
In one embodiment, a voltage is input to one end of the fuse FU1, the other end of the fuse FU1 is connected to an input terminal of the transformer TR1, a voltage is input to an input terminal of the transformer TR1, an output terminal of the transformer TR1 is connected to an anode of the diode D3, an anode of the diode D4 and an anode of the diode D5 at the same time, and is grounded, a pin 1 of the regulator U1 is connected to one end of the capacitor C4 and a cathode of the diode D5 at the same time, a pin 2 of the regulator U1 is connected to the other end of the capacitor C4 and one end of the capacitor C5 at the same time, one end of the capacitor C3 is connected to a cathode of the diode D3, one end of the resistor R1 and a cathode of the diode D4 at the same time, the other end of the capacitor C3 is grounded, and a collector of the transistor Q2 is connected to one end of the resistor R1 and a collector of the transistor Q1 at the same time, a base of the transistor Q2 is connected to one end of the capacitor C1, the other end of the resistor R1 and a collector of the transistor Q3, an emitter of the transistor Q2 is connected to a base of the transistor Q1, an emitter of the transistor Q3 is connected to one end of the resistor R2 and a positive electrode of the diode D1, a negative electrode of the diode D1 is connected to a positive electrode of the diode D2, an emitter of the transistor Q1 is connected to the other end of the resistor R2, one end of the resistor R3 and one end of the capacitor C2, a base of the transistor Q3 is connected to a control end of the adjustable resistor RV1, one end of the adjustable resistor RV1 is connected to the other end of the resistor R3, the other end of the adjustable resistor RV1 is connected to one end of the resistor R4, and the other end of the capacitor C1 is connected to the other end of the capacitor C5, one end of the capacitor C5, and the other end of, The No. 3 pin of the voltage stabilizer U1 is connected with the cathode of the diode D2, the cathode of the diode D2 is grounded, the other end of the resistor R4 is connected with the cathode of the diode D2 and the other end of the capacitor C2, and voltage is output from two ends of the capacitor C2.
As shown in fig. 2, the voltage detection module includes: the circuit comprises an integrated circuit U3, a resistor R9, a resistor R11, a capacitor C6, a triode Q5, a resistor R12, a capacitor C7, a triode Q6, a resistor R10 and a capacitor C8.
In one embodiment, pin No. 5 of the integrated circuit U3 is connected to one end of the capacitor C7, pin No. 2 of the integrated circuit U3 is connected to the collector of the transistor Q6 and pin No. 4 of the integrated circuit U3, pin No. 8 of the integrated circuit U3 is connected to one end of the resistor R9 and pin No. 4 of the integrated circuit U3 and inputs an operating voltage, the base of the transistor Q6 is connected to one end of the resistor R10 and one end of the capacitor C8, the emitter of the transistor Q6 is connected to the other end of the resistor R10 and the other end of the capacitor C7, pin No. 1 of the integrated circuit U3 is connected to one end of the capacitor C6 and the other end of the capacitor C7, pin No. 6 of the integrated circuit U3 is connected to the other end of the capacitor C6, pin No. 7 of the integrated circuit U3 is connected to the other end of the resistor R9 and pin No. 6 of the integrated circuit U67 3, the 3 # pin of the integrated circuit U3 is connected with one end of the resistor R11, the base of the triode Q5 is connected with the other end of the resistor R11, the emitter of the triode Q5 is grounded, the collector of the triode Q5 is connected with one end of the resistor R12 and outputs signals, and the other end of the capacitor C8 is connected with the other end of the resistor R12 and inputs signals.
As shown in fig. 3, the comparison output module includes: the circuit comprises a resistor R5, a resistor R6, a voltage stabilizing diode D6, a resistor R8, a resistor R7, a triode Q4 and a comparator U2A.
In one embodiment, pin No. 3 of the comparator U2A is connected to both one end of the resistor R6 and the cathode of the zener diode D6 and inputs a signal, pin No. 2 of the comparator U2A is connected to one end of the resistor R5, pin No. 1 of the comparator U2A is connected to both one end of the resistor R8 and one end of the resistor R7, the other end of the resistor R5 is connected to both the other end of the resistor R6 and pin No. 4 of the comparator U2A, the base of the transistor Q4 is connected to the other end of the resistor R7, the other end of the resistor R8 is connected to both the collector of the transistor Q4 and pin No. 4 of the comparator U2A and outputs a signal, and pin No. 8 of the comparator U2A is connected to both the anode of the zener diode D6 and the emitter of the transistor Q4 and outputs a signal.
The working principle is as follows: when the battery of the things-connected intelligent cabinet/electric lock is charged, the mains voltage is input at the moment, the fuse FU1 provides protection, the voltage is prevented from being overlarge, and the components are damaged, meanwhile, the direct-current voltage is input into the voltage adjusting unit and is converted into direct-current voltage through the transformer TR1, the output end of the transformer TR1 is output to the diode D3 to be rectified with the diode D4, the diode D5 is conducted at the moment, the input voltage is input to the voltage stabilizing U1, the capacitor C4 and the capacitor C5 perform input and output voltage filtering, and the capacitor C3 performs filtering output; because the voltage is different at the moment, the triode Q1, the triode Q2 and the triode Q3 form a sampling circuit, so when the input voltage rises, causing the base voltage of transistor Q3 to rise, the collector voltage of transistor Q3 drops, the voltage at the base of transistor Q2 also drops, the base of transistor Q1 also drops, the voltage drop across transistor Q1 increases, thereby causing the output voltage to drop, and as the input voltage drops, the base voltage of transistor Q3 drops, the voltage at the collector of transistor Q3 rises, the voltage at the base of transistor Q2 also rises, the voltage at the base of transistor Q1 also rises, the voltage drop across transistor Q1 decreases, therefore, the output voltage is increased, at the moment, the output voltage is output through the base electrode of the triode Q3, the control end of the adjustable resistor RV1 is subjected to voltage stabilization by , the resistor R3 and the resistor R4, and filtering output is performed through the capacitor C2;
the output voltage passes through an input voltage detection module which consists of a differential circuit and an amplifying circuit; the differential circuit consists of a resistor R10 and a capacitor C8, and the amplifying circuit consists of a triode Q5; the input voltage signal is input through a differential circuit, amplified and input through a triode Q6, and the other path of the input voltage signal is output to a collector of a triode Q5 through a resistor R12; the voltage signal is output to the base electrode of the triode Q5 by triggering the No. 3 pin of the integrated circuit U3 through the collector electrode of the triode Q6, at the moment, the integrated circuit U3 is in a detection state, so that the triode Q5 is in saturation conduction, and the collector electrode of the triode Q5 is in a low level; when the detected voltage is larger than the reference value, the collector of the transistor Q5 is changed to high level, so that the transistor Q5 is not conducted, and only the voltage signal conforming to kneeling is output;
meanwhile, a voltage signal detected and output is protected by the input comparison output module through the resistor R6 and the voltage stabilizing diode D6 and input into the comparator U2A, at the moment, the resistor R8 and the resistor R7 perform voltage division output, the triode Q4 is used as a switch, when the voltage accords with the working condition, the voltage is output through an emitter of the triode Q4, and when the voltage does not accord with the working range, the voltage is readjusted through the output value voltage adjusting module carried out through a collector of the triode Q4.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be modified to perform various equivalent transformations, which all belong to the protection scope of the present invention.
Claims (4)
1. A electric quantity monitoring circuit for thing allies oneself with intelligent cabinet/electric lock, its characterized in that includes: the device comprises an electric quantity detection unit, a charging detection unit and an electric quantity display unit; wherein the charging detection unit includes: the device comprises a voltage regulating module, a voltage detecting module and a comparison output module;
wherein the voltage regulation module comprises: fuse FU1, transformer TR1, diode D3, diode D4, diode D5, capacitor C3, capacitor C4, capacitor C5, voltage stabilizer U1, resistor R1, triode Q1, triode Q2, capacitor C1, resistor R2, diode D1, diode D2, triode Q3, adjustable resistor RV1, resistor R3, resistor R4 and capacitor C2; wherein, a voltage is input at one end of the fuse FU1, the other end of the fuse FU1 is connected with an input end of the transformer TR1, a voltage is input at an input end of the transformer TR1, an output end of the transformer TR1 is simultaneously connected with an anode of the diode D3, an anode of the diode D4 and an anode of the diode D5, and is grounded, pin 1 of the regulator U1 is simultaneously connected with one end of the capacitor C4 and a cathode of the diode D5, pin 2 of the regulator U1 is simultaneously connected with the other end of the capacitor C4 and one end of the capacitor C5, and is grounded, one end of the capacitor C3 is simultaneously connected with a cathode of the diode D3, one end of the resistor R1 and a cathode of the diode D4, the other end of the capacitor C3 is grounded, a collector of the transistor Q2 is simultaneously connected with one end of the resistor R1 and a collector of the transistor Q1, a base of the transistor Q2 is connected to one end of the capacitor C1, the other end of the resistor R1 and a collector of the transistor Q3, an emitter of the transistor Q2 is connected to a base of the transistor Q1, an emitter of the transistor Q3 is connected to one end of the resistor R2 and a positive electrode of the diode D1, a negative electrode of the diode D1 is connected to a positive electrode of the diode D2, an emitter of the transistor Q1 is connected to the other end of the resistor R2, one end of the resistor R3 and one end of the capacitor C2, a base of the transistor Q3 is connected to a control end of the adjustable resistor RV1, one end of the adjustable resistor RV1 is connected to the other end of the resistor R3, the other end of the adjustable resistor RV1 is connected to one end of the resistor R4, and the other end of the capacitor C1 is connected to the other end of the capacitor C5, one end of the capacitor C5, and the other end of, The No. 3 pin of the voltage stabilizer U1 is connected with the cathode of the diode D2, the cathode of the diode D2 is grounded, the other end of the resistor R4 is connected with the cathode of the diode D2 and the other end of the capacitor C2, and voltage is output from two ends of the capacitor C2.
2. The electric quantity monitoring circuit for the intelligent cabinet/electric lock of the internet of things as claimed in claim 1, wherein the voltage detection module comprises: the circuit comprises an integrated circuit U3, a resistor R9, a resistor R11, a capacitor C6, a triode Q5, a resistor R12, a capacitor C7, a triode Q6, a resistor R10 and a capacitor C8; wherein, pin No. 5 of the integrated circuit U3 is connected with one end of the capacitor C7, pin No. 2 of the integrated circuit U3 is connected with the collector of the transistor Q6 and pin No. 4 of the integrated circuit U3 at the same time, pin No. 8 of the integrated circuit U3 is connected with one end of the resistor R9 and pin No. 4 of the integrated circuit U3 at the same time and inputs an operating voltage, the base of the transistor Q6 is connected with one end of the resistor R10 and one end of the capacitor C8 at the same time, the emitter of the transistor Q6 is connected with the other end of the resistor R10 and the other end of the capacitor C7 at the same time, pin No. 1 of the integrated circuit U3 is connected with one end of the capacitor C6 and the other end of the capacitor C7 at the same time, pin No. 6 of the integrated circuit U3 is connected with the other end of the capacitor C6, pin No. 7 of the integrated circuit U3 is connected with the other end of the resistor R9 and the pin No. 6 of the integrated circuit U3, the 3 # pin of the integrated circuit U3 is connected with one end of the resistor R11, the base of the triode Q5 is connected with the other end of the resistor R11, the emitter of the triode Q5 is grounded, the collector of the triode Q5 is connected with one end of the resistor R12 and outputs signals, and the other end of the capacitor C8 is connected with the other end of the resistor R12 and inputs signals.
3. The electric quantity monitoring circuit for the intelligent cabinet/electric lock of the internet of things according to claim 1, wherein the comparison output module comprises: the circuit comprises a resistor R5, a resistor R6, a voltage stabilizing diode D6, a resistor R8, a resistor R7, a triode Q4 and a comparator U2A; wherein, pin No. 3 of the comparator U2A is connected to one end of the resistor R6 and the cathode of the zener diode D6 at the same time and inputs a signal, pin No. 2 of the comparator U2A is connected to one end of the resistor R5, pin No. 1 of the comparator U2A is connected to one end of the resistor R8 and one end of the resistor R7 at the same time, the other end of the resistor R5 is connected to the other end of the resistor R6 and pin No. 4 of the comparator U2A at the same time, the base of the transistor Q4 is connected to the other end of the resistor R7, the other end of the resistor R8 is connected to the collector of the transistor Q4 and pin No. 4 of the comparator U2A at the same time and outputs a signal, and pin No. 8 of the comparator U2A is connected to the anode of the zener diode D6 and the emitter of the transistor Q4 at the same time and outputs a signal.
4. The electric quantity monitoring circuit for the intelligent cabinet/electric lock of the internet of things as claimed in claim 2, wherein the integrated circuit U3 is model NE 555.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021713354.8U CN213023489U (en) | 2020-08-17 | 2020-08-17 | Electric quantity monitoring circuit for intelligent cabinet/electric lock of internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021713354.8U CN213023489U (en) | 2020-08-17 | 2020-08-17 | Electric quantity monitoring circuit for intelligent cabinet/electric lock of internet of things |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213023489U true CN213023489U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021713354.8U Expired - Fee Related CN213023489U (en) | 2020-08-17 | 2020-08-17 | Electric quantity monitoring circuit for intelligent cabinet/electric lock of internet of things |
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| Country | Link |
|---|---|
| CN (1) | CN213023489U (en) |
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2020
- 2020-08-17 CN CN202021713354.8U patent/CN213023489U/en not_active Expired - Fee Related
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