CN216771947U - Electric leakage alarm circuit - Google Patents
Electric leakage alarm circuit Download PDFInfo
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- CN216771947U CN216771947U CN202122723463.9U CN202122723463U CN216771947U CN 216771947 U CN216771947 U CN 216771947U CN 202122723463 U CN202122723463 U CN 202122723463U CN 216771947 U CN216771947 U CN 216771947U
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Abstract
The utility model discloses an electric leakage alarm circuit, which relates to the field of alarm circuits and comprises the following components: the device comprises a leakage current detection module, a test module, an infrared detection module, a clock module, a main control module, a switch control module, an alarm module and a communication module; the leakage current detection module is used for detecting leakage current signals, the test module is used for generating test current signals, the infrared detection module is used for outputting infrared signals, the clock module is used for providing clock signals, the main control module is used for receiving signals and outputting control signals, the switch control module is used for controlling a power supply, the alarm module is used for audible and visual alarm, and the communication module is used for human-computer interaction. The leakage alarm circuit regularly detects the leakage alarm circuit through the clock circuit, and the infrared detection equipment is adopted to detect the surrounding situation when the leakage occurs, so that the work of the alarm module can be controlled, the life safety of personnel outside the leakage range is guaranteed, and the waste of electric resources is reduced.
Description
Technical Field
The utility model relates to the field of alarm circuits, in particular to an electric leakage alarm circuit.
Background
Along with the continuous development of electronic technology, a large number of electronic devices appear around people, the life of people is facilitated, accidents such as electric appliance fire disasters and the like are increased, the personal and property safety of people is damaged, the electric leakage of the electronic devices is one of main factors causing the electric appliance fire, therefore, the strengthening of electric leakage alarming becomes a key point.
Disclosure of Invention
The embodiment of the utility model provides an electric leakage alarm circuit to solve the problems in the background technology.
According to an embodiment of the present invention, there is provided a leakage alarm circuit, including: the device comprises a leakage current detection module, a test module, an infrared detection module, a clock module, a main control module, a switch control module, an alarm module and a communication module;
the leakage current detection module is used for detecting a leakage current signal of the electronic equipment;
the test module is used for artificially generating a test current signal to simulate the occurrence of electric leakage of the electronic equipment;
the infrared detection module is used for detecting the condition of the person in the range and outputting an infrared signal;
the clock module is used for providing a clock signal;
the main control module is respectively connected with the output end of the leakage current detection module, the output end of the test module, the output end of the infrared detection module and the output end of the clock module, is used for respectively receiving and processing the leakage current signal, the test current signal, the infrared signal and the clock signal, and is used for outputting a control signal and a data signal;
the switch control module is connected with the first control end of the main control module and used for receiving the control signal and controlling the infrared detection module to work;
the alarm module is connected with the second control end of the main control module and used for receiving the control signal and giving out acousto-optic alarm;
and the communication module is connected with the communication end of the main control module and used for receiving the data signal and carrying out human-computer interaction.
Compared with the prior art, the utility model has the beneficial effects that: the leakage alarm circuit controls the leakage signal of the test to be input into the leakage alarm circuit at regular intervals through the clock circuit, so that the function of the circuit is regularly detected, the leakage alarm circuit is prevented from being incapable of working normally when in need, the object condition around the leakage equipment is detected by adopting an infrared detection method, the alarm can be stopped when the electronic equipment generates leakage alarm and alarms for a long time without people overhauling, the alarm is carried out until people appear in the infrared detection range, the life safety of the personnel is ensured, and the waste of electric resources is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic block diagram of a leakage alarm circuit according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of the leakage current detection module, the test module, and the clock module according to the embodiment of the present invention.
Fig. 3 is a circuit diagram of an infrared detection, alarm and communication connection provided by an embodiment of the present invention.
Reference numerals: 1. a leakage current detection module; 2. a test module; 3. an infrared detection module; 4. a clock module; 5. a main control module; 6. a switch control module; 7. an alarm module; 8. and a communication module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1, an embodiment of the present invention provides an electrical leakage alarm circuit, including: the device comprises a leakage current detection module 1, a test module 2, an infrared detection module 3, a clock module 4, a main control module 5, a switch control module 6, an alarm module 7 and a communication module 8;
specifically, the leakage current detection module 1 is configured to detect a leakage current signal IA of an electronic device;
the test module 2 is used for artificially generating a test current signal IB to simulate the occurrence of electric leakage of the electronic equipment;
the infrared detection module 3 is used for detecting the condition of the person in the range and outputting an infrared signal;
a clock module 4 for providing a clock signal;
the main control module 5 is respectively connected with the output end of the leakage current detection module 1, the output end of the test module 2, the output end of the infrared detection module 3 and the output end of the clock module 4, and is used for respectively receiving and processing the leakage current signal IA, the test current signal IB, the infrared signal and the clock signal, and outputting a control signal and a data signal;
the switch control module 6 is connected with the first control end of the main control module 5 and is used for receiving the control signal and controlling the infrared detection module 3 to work;
the alarm module 7 is connected with the second control end of the main control module 5 and used for receiving the control signal and giving out acousto-optic alarm;
and the communication module 8 is connected with the communication end of the main control module 5 and used for receiving the data signal and performing man-machine interaction.
In a specific embodiment, the leakage current detection module 1 may detect the leakage current signal IA by using a current transformer, which is not described herein again; the test module 2 can adopt artificial input to control the test current signal IB to simulate the generation of the leakage current signal IA so as to detect the alarm function of the main control module 5, and the test current signal IB is selected here, which is not described in detail; the clock module 4 can adopt a clock chip J3, and controls the timing input test current signal IB and the timing alarm of the main control module 5 through an internal software system; the infrared detection module 3 can use an infrared sensor J1 to perform infrared monitoring, and perform filtering and amplifying processing through a filter capacitor and an operational amplifier; the main control module 5 can adopt a single chip microcomputer as a core controller to realize the receiving and processing of signals and the output of control signals and data signals; the switch control module 6 can be controlled by a switch tube; the alarm module 7 can adopt an acousto-optic alarm circuit to carry out acousto-optic alarm; the communication module 8 can adopt a wireless communication network to realize data interaction between the man-machine.
Example 2: on the basis of the embodiment 1, please refer to fig. 2, in an embodiment of the leakage alarm circuit according to the present invention, the leakage current detection module 1 includes a leakage current signal IA; the test module 2 comprises a test current signal IB; the main control module 5 comprises a first controller U1;
specifically, the leakage current signal IA is coupled to a first modular terminal of the first controller U1, and the test current signal IB is coupled to a second modular terminal of the first controller U1.
Further, the clock module 4 includes a clock chip J3, a first power VCC, a crystal oscillator Y1, a seventh capacitor C7, and an eighth capacitor C8;
specifically, a first output end of the clock chip J3 is connected to a first input end of the first controller U1, a second output end of the clock chip J3 is connected to a second input end of the first controller U1, a clock end of the clock chip J3 is connected to one end of the seventh capacitor C7 and a first end of the crystal oscillator Y1, an input/output end of the clock chip J3 is connected to one end of the eighth capacitor C8 and a second end of the crystal oscillator Y1, and the other end of the eighth capacitor C8, the other end of the seventh capacitor C7, a ground end of the clock chip J3 and a reset end are all grounded.
In a specific embodiment, the leakage current signal IA is obtained by detecting a phase current of an electronic device with a current transformer, and a specific connection manner is not limited; the test current signal IB is a current signal which is artificially generated and is used for simulating the leakage current signal IA, triggering the alarm function of the main control module 5 and realizing the detection of the work of the alarm function; the first controller U1 may select a Digital Signal Processor (DSP) as a core controller, implement signal reception and processing, and output a control signal and a data signal; the clock chip J3 can use DS1302 to complete timing alarm and timing self-repairing functions.
Example 3: based on embodiment 2, please refer to fig. 3, in a specific embodiment of the leakage alarm circuit according to the present invention, the infrared detection module 3 includes a first capacitor C1, a second capacitor C2, an infrared sensor J1, a third capacitor C3, a second resistor R2, a third resistor R3, a fourth capacitor C4, a fourth resistor R4, a first operational amplifier a1, a fifth resistor R5, and a fifth capacitor C5;
specifically, a first end of the first capacitor C1 is connected to a first end of the infrared sensor and one end of the second capacitor C2, a third end of the infrared sensor J1 is connected to one end of the third capacitor C3, one end of the second resistor R2 and one end of the third resistor R3, a second end of the first capacitor C1, the other end of the second capacitor C2, a second end of the infrared sensor J1 and the other end of the third capacitor C3, the other end of the second resistor R2, one end of the fourth capacitor C4 and one end of the fourth resistor R4 are all grounded, the other end of the fourth capacitor C4 and the other end of the third resistor R3 are all connected with the same-phase end of the first operational amplifier A1, the other end of the fourth resistor R4, one end of the fifth resistor R5 and one end of the fifth capacitor C5 are all connected with the reverse-phase end of the first operational amplifier A1, and the output end of the first operational amplifier A1, the other end of the fifth resistor R5 and the other end of the fifth capacitor C5 are all connected with the third modulus end of the first controller U1.
Further, the switch control module 6 includes a first switch tube N1, a second power supply +3.3V, and a first resistor R1;
specifically, the collector of the first switching tube N1 is connected to +3.3V of the second power supply, the emitter of the first switching tube N1 is connected to the first end of the first capacitor C1, and the base of the first switching tube N1 is connected to the first output end of the first controller U1 through the first resistor R1.
Further, the alarm module 7 comprises a seventh resistor R7, a second switching tube P1, a speaker BL, an indicator light LED and a third power supply + 5V;
specifically, one end of the seventh resistor R7 is connected to the second output end of the first controller U1, the other end of the seventh resistor R7 is connected to the base of the second switch tube P1, the emitter of the second switch tube P1 is connected to +5V of the third power supply, the collector of the second switch tube P1 is connected to one end of the speaker BL and the anode of the indicator light LED, and the cathode of the indicator light LED and the other end of the speaker BL are both grounded.
Further, the communication module 8 includes a level shifter J2, a sixth resistor R6, a fourth power supply +5V, a sixth capacitor C6 and a communication chip J4;
specifically, the output end of the level shifter J2 is connected to the communication receiving end of the first controller U1, the input end of the level shifter J2 is connected to the communication transmitting end of the first controller U1, the receive enable end and the send enable end of the level shifter J2 are both connected to the command end of the first controller U1, the signal receiving end of the level shifter J2 is connected to one end of the sixth resistor R6 and the second end of the communication chip J4, the signal transmitting end of the level shifter J2 is connected to the other end of the sixth resistor R6 and the first end of the communication chip J4, the power supply ends of the level shifter J2 are connected to one end of the fourth power supply +5V and the sixth capacitor C6, and the other end of the sixth capacitor C6 and the ground end of the level shifter J2 are both grounded.
In a specific embodiment, the infrared sensor J1 can be KDS9 infrared probe thermal release sensor; the first operational amplifier A1 can use an OP07 operational amplifier, and a voltage follower circuit is formed by matching a fourth resistor R4, a fifth resistor R5 and a fifth capacitor C5, and a voltage signal output by the first operational amplifier A1 is used as an alarm signal and transmitted to a first controller U1; the first switch tube N1 may be an NPN transistor for controlling the power supply of the infrared detection module 3; the level shifter J2 can select an MAX485 chip to realize the communication between the first controller U1 and the RS-485 network; the communication chip J4 can be selected from an RS-485 communication chip; the second switch tube P1 can select a PNP-type triode to control the speaker BL and the indicator light LED.
In the embodiment of the utility model, when the main control module 5 receives the leakage current signal IA output by the leakage current detection module 1, the main control module 5 controls the alarm module 7 to perform sound-light alarm, the communication module 8 transmits the leakage signal to the user terminal through the RS485 network, the clock module 4 performs timing, when the working time of the alarm module 7 exceeds the timing time of the clock module 4, the alarm module 7 stops working, meanwhile, the main control module 5 controls the switch control module 6 to conduct the infrared detection module 3, the infrared detection module 3 starts working, when people exist in the infrared detection range, the alarm module 7 starts working, when the main control module 5 does not receive the leakage current signal IA, the test module 2 periodically sends a short test current signal IB to the main control module 5 according to the timing time set by the clock module to simulate the occurrence of leakage, the main control module 5 performs electric leakage alarm to realize the regular maintenance of the electric leakage alarm circuit.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. An electric leakage alarm circuit, characterized in that:
this electric leakage alarm circuit includes: the device comprises a leakage current detection module, a test module, an infrared detection module, a clock module, a main control module, a switch control module, an alarm module and a communication module;
the leakage current detection module is used for detecting a leakage current signal of the electronic equipment;
the test module is used for artificially generating a test current signal to simulate the occurrence of electric leakage of the electronic equipment;
the infrared detection module is used for detecting the condition of the person in the range and outputting an infrared signal;
the clock module is used for providing a clock signal;
the main control module is respectively connected with the output end of the leakage current detection module, the output end of the test module, the output end of the infrared detection module and the output end of the clock module, is used for respectively receiving and processing the leakage current signal, the test current signal, the infrared signal and the clock signal, and is used for outputting a control signal and a data signal;
the switch control module is connected with the first control end of the main control module and used for receiving the control signal and controlling the infrared detection module to work;
the alarm module is connected with the second control end of the main control module and used for receiving the control signal and giving out acousto-optic alarm;
and the communication module is connected with the communication end of the main control module and used for receiving the data signal and carrying out human-computer interaction.
2. The leakage alarm circuit of claim 1, wherein the leakage current detection module comprises a leakage current signal; the test module comprises a test current signal; the main control module comprises a first controller;
the leakage current signal is connected with a first modulus end of the first controller, and the test current signal is connected with a second modulus end of the first controller.
3. The leakage alarm circuit of claim 2, wherein the clock module comprises a clock chip, a first power supply, a crystal oscillator, a seventh capacitor and an eighth capacitor;
the first output end of the clock chip is connected with the first input end of the first controller, the second output end of the clock chip is connected with the second input end of the first controller, the clock end of the clock chip is connected with one end of the seventh capacitor and the first end of the crystal oscillator, the input/output end of the clock chip is connected with one end of the eighth capacitor and the second end of the crystal oscillator, and the other end of the eighth capacitor, the other end of the seventh capacitor, the grounding end of the clock chip and the reset end are all grounded.
4. The electric leakage alarm circuit according to claim 2, wherein the infrared detection module comprises a first capacitor, a second capacitor, an infrared sensor, a third capacitor, a second resistor, a third resistor, a fourth capacitor, a fourth resistor, a first operational amplifier, a fifth resistor and a fifth capacitor;
the first end of infrared sensor and the one end of second electric capacity are connected to the first end of first electric capacity, the one end of third electric capacity is connected to infrared sensor's third end, the one end of second resistance and the one end of third resistance, the second end of first electric capacity, the other end of second electric capacity, infrared sensor's second end, the other end of third electric capacity, the other end of second resistance, the one end of fourth electric capacity and the one end of fourth resistance all ground connection, the homophase end that first fortune was put is all connected to the other end of fourth electric capacity and the other end of third resistance, the other end of fourth resistance, the inverting terminal that first fortune was put is all connected to the one end of fifth resistance and the one end of fifth electric capacity, the output that first fortune was put, the third modulus end of first controller is all connected to the other end of fifth resistance and the other end of fifth electric capacity.
5. The leakage alarm circuit of claim 4, wherein the switch control module comprises a first switch tube, a second power supply and a first resistor;
the collector of the first switch tube is connected with a second power supply, the emitter of the first switch tube is connected with the first end of the first capacitor, and the base of the first switch tube is connected with the first output end of the first controller through a first resistor.
6. The electric leakage alarm circuit according to claim 2, wherein the alarm module comprises a seventh resistor, a second switch tube, a speaker, an indicator light and a third power supply;
one end of the seventh resistor is connected with the second output end of the first controller, the other end of the seventh resistor is connected with the base of the second switch tube, the emitting electrode of the second switch tube is connected with the third power supply, the collector electrode of the second switch tube is connected with one end of the loudspeaker and the anode of the indicator light, and the cathode of the indicator light and the other end of the loudspeaker are both grounded.
7. The electric leakage alarm circuit according to claim 2, wherein the communication module comprises a level shifter, a sixth resistor, a fourth power supply, a sixth capacitor and a communication chip;
the output end of the level shifter is connected with the communication receiving end of the first controller, the input end of the level shifter is connected with the communication transmitting end of the first controller, the receiving enabling end and the sending enabling end of the level shifter are both connected with the instruction end of the first controller, the signal receiving end of the level shifter is connected with one end of the sixth resistor and the second end of the communication chip, the signal transmitting end of the level shifter is connected with the other end of the sixth resistor and the first end of the communication chip, the power supply end of the level shifter is connected with one end of the fourth power supply and one end of the sixth capacitor, and the other end of the sixth capacitor and the ground end of the level shifter are both grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122723463.9U CN216771947U (en) | 2021-11-09 | 2021-11-09 | Electric leakage alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122723463.9U CN216771947U (en) | 2021-11-09 | 2021-11-09 | Electric leakage alarm circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216771947U true CN216771947U (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122723463.9U Active CN216771947U (en) | 2021-11-09 | 2021-11-09 | Electric leakage alarm circuit |
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|---|---|
| CN (1) | CN216771947U (en) |
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2021
- 2021-11-09 CN CN202122723463.9U patent/CN216771947U/en active Active
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