CN117665370A - System for live alarm between ground wire and zero line - Google Patents
System for live alarm between ground wire and zero line Download PDFInfo
- Publication number
- CN117665370A CN117665370A CN202211038641.7A CN202211038641A CN117665370A CN 117665370 A CN117665370 A CN 117665370A CN 202211038641 A CN202211038641 A CN 202211038641A CN 117665370 A CN117665370 A CN 117665370A
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- live
- ground
- circuit
- alerting
- alarm
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- 238000001514 detection method Methods 0.000 claims abstract description 29
- 230000001012 protector Effects 0.000 claims description 15
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The invention discloses a system for live alarm between a ground wire and a zero wire, which relates to the field of electric leakage protection and comprises a live detection module; the live detection module is used for detecting a voltage value between the zero line and the ground line, and sending an alarm when the detected voltage value is larger than a preset value; compared with the prior art, the live detection module detects whether the zero line and the ground wire are electrified or not, and an alarm is given when the zero line and the ground wire are electrified, so that the use safety is improved; and in addition, the judging work is completed by the load controller, and a singlechip is not required to be additionally arranged, so that the hardware utilization rate is improved, and the cost is reduced.
Description
Technical Field
The application relates to the field of leakage protection, in particular to a system for live alarm between a ground wire and a zero line.
Background
The common leakage protector executes the action of leakage protection only when leakage current exists in the power line, and voltage exists between the zero line and the ground line in real life, but the situation that the leakage current does not exist in the power line exists, and under the situation, a user has the risk of electric shock;
the leakage protection device with the ground wire live protection comprises three poles of a phase line L, a zero line N and a ground wire E with switches, a zero sequence current transformer, a test circuit, a release, a rectifying circuit, a power supply voltage reducing circuit and a silicon controlled rectifier which pass through the phase line L and the zero line N, and further comprises a current detector and a double-input-end amplifier, wherein one end of a primary coil of the current detector is connected with the ground wire E, the other end of the primary coil of the current detector is connected with the zero line N after being connected with a large-resistance current limiting voltage reducing circuit in series, a secondary coil of the current detector is connected with one input end of the double-input-end amplifier, two output ends of the double-input-end amplifier are respectively connected with trigger electrodes of two silicon controlled rectifiers, and the output end of the zero sequence current transformer is connected with the other input end of the double-input-end amplifier; the application is that leakage protection is executed only when leakage occurs, and when voltage exists between the zero line and the ground line but no leakage current exists in the power line, a user cannot be effectively reminded, and potential safety hazards exist.
Content of the application
1. Technical problem to be solved
Aiming at the defects existing in the prior art, the safety of the leakage protection system is improved.
2. Technical proposal
In order to solve the problems, the system particularly provides a live alarm system between a ground wire and a zero wire, which comprises a live detection module;
the live detection module is used for detecting a voltage value between the zero line and the ground line, and is also used for giving an alarm when the detected voltage value is larger than a preset value.
Wherein the system further comprises a load controller;
the live detection module is also used for sending out an alarm signal when the detected voltage value is larger than a preset value, and the load controller is used for receiving the alarm signal.
The system also comprises a leakage protector, wherein the leakage protector is used for leakage protection.
The system also comprises a communication module, wherein the electrified detection module is in communication connection with the load controller through the communication module;
the load controller is also in communication connection with the leakage protector through the communication module.
The load controller is also used for sending out a power-off signal after receiving the alarm signal;
the leakage protector is also used for receiving the power-off signal, and the leakage protector is arranged to disconnect the power supply of the load after receiving the power-off signal.
The live detection module comprises a detection circuit, a rectification circuit, a driving circuit and an alarm circuit;
the detection circuit is used for detecting a voltage value between the zero line and the ground line;
the rectification circuit is used for rectifying alternating current into direct current;
when the voltage value detected by the detection circuit is larger than a preset value, the driving circuit drives the alarm circuit to give out an acoustic and/or optical alarm.
The driving circuit is also used for sending out an alarm signal when the voltage value detected by the detection circuit is larger than a preset value.
The alarm circuit is an LED indicator lamp and/or a buzzer.
3. Advantageous effects of the present application
Compared with the prior art, the live detection module detects whether the zero line and the ground wire are electrified or not, and an alarm is given when the zero line and the ground wire are electrified, so that the use safety is improved;
and in addition, the judging work is completed by the load controller, and a singlechip is not required to be additionally arranged, so that the hardware utilization rate is improved, and the cost is reduced.
Drawings
FIG. 1 is a block diagram of an embodiment of the present application;
fig. 2 is a schematic diagram of an embodiment of the present application.
Detailed Description
The detailed description of the present application is further described in detail below with reference to the drawings and examples. The following examples are illustrative of the present application but are not intended to limit the scope of the present application.
Example 1:
in this embodiment, the system is provided on a water heater.
As shown in fig. 1, the system for live alarm between the ground wire and the zero wire comprises a live detection module 1, a communication module 2, a leakage protector 3 and a load controller 4, wherein the load controller 4 is a water heater controller;
the load controller 4 is respectively in communication connection with the live detection module 1 and the leakage protector 3 through the communication module 2.
As shown in fig. 2, the live detection module 1 includes a detection circuit 11, a rectification circuit 12, a driving circuit 13, and an alarm circuit 14;
the detection circuit 11 is used for detecting a voltage value between the zero line N and the ground line E;
the rectifying circuit 12 is used for rectifying alternating current into direct current;
in this embodiment, the preset value is 40V, and those skilled in the art adjust parameters of components such as the resistor R8 according to the requirements, thereby adjusting the preset value;
when the voltage value between the zero line N and the ground line E is greater than 40V, the optocoupler U2 is conducted, so that the triode Q1 and the triode Q2 of the driving circuit 13 are conducted, the indicator light LED of the alarm circuit 14 is enabled to flash, and meanwhile, the driving circuit 13 sends an alarm signal to the load controller 4 through the optocoupler U1 and the port J1.
After the load controller 4 receives the alarm signal, the load controller 4 can determine whether to disconnect the power supply of the load according to the requirements of the equipment or by combining other safety-related information;
when the load controller 4 determines that the power supply needs to be disconnected, a high level, namely a power-off signal is sent to the leakage protector 3 through the optical coupler U4, and the leakage protector 3 receives the signal and then disconnects the power supply of the load.
The live detection module 1 is arranged to detect whether the zero line N and the ground line E are electrified or not, and an alarm is given when the zero line N and the ground line E are electrified, so that the use safety is improved;
and the load controller 4 judges whether the power supply needs to be disconnected or not by sending an alarm signal to the load controller 4, so that the use safety of a user is ensured, and the use experience of the user is ensured.
Example 2:
the present embodiment is different from embodiment 1 in that a buzzer is provided in the alarm circuit 14 in this embodiment for sounding an alarm; one of ordinary skill in the art can use the buzzer with the LED lamp combination according to actual demand, and then send audible and visual alarm.
The above embodiments are only for illustrating the present application, not for limiting the same, and various changes and modifications can be made by one skilled in the relevant art without departing from the spirit and scope of the present application, so that all equivalent technical solutions are also within the scope of the present application, and the scope of the present application is defined by the claims.
Claims (8)
1. A system for live alerting between ground and neutral, characterized in that it comprises a live detection module (1);
the live detection module (1) is used for detecting a voltage value between the zero line and the ground line, and the live detection module (1) is also used for giving an alarm when the detected voltage value is larger than a preset value.
2. A system for live alerting between ground and neutral wires as claimed in claim 1, characterized in that said system further comprises a load controller (4);
the live detection module (1) is further used for sending out an alarm signal when the detected voltage value is larger than a preset value, and the load controller (4) is used for receiving the alarm signal.
3. A system for live alerting between ground and neutral wires as claimed in claim 2, characterized in that the system further comprises a leakage protector (3), the leakage protector (3) being adapted for leakage protection.
4. A system for live alerting between ground and neutral wires as claimed in claim 3, characterized in that said system further comprises a communication module (2), said live detection module (1) being communicatively connected to said load controller (4) via said communication module (2);
the load controller (4) is also in communication connection with the leakage protector (3) through the communication module (2).
5. A system for live alerting between ground and neutral wires as claimed in claim 4 wherein said load controller (4) is further adapted to send out a power down signal upon receipt of an alert signal;
the earth leakage protector (3) is also used for receiving a power-off signal, and the earth leakage protector (3) is arranged to disconnect the power supply of the load after receiving the power-off signal.
6. A system for live alerting between ground and neutral wires as claimed in claim 1, characterized in that said live detection module (1) comprises a detection circuit (11), a rectifying circuit (12), a driving circuit (13) and an alerting circuit (14);
the detection circuit (11) is used for detecting a voltage value between the zero line and the ground line;
the rectification circuit (12) is used for rectifying alternating current into direct current;
when the voltage value detected by the detection circuit (11) is larger than a preset value, the driving circuit (13) drives the alarm circuit (14) to emit an acoustic and/or optical alarm.
7. A system for live alerting between ground and neutral wires as claimed in claim 6, characterized in that said drive circuit (13) is further arranged to issue an alert signal when the voltage value detected by said detection circuit (11) is greater than a preset value.
8. A system for live alerting between ground and neutral wires as claimed in claim 7, characterized in that said alerting circuit (14) is an LED indicator light and/or a buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211038641.7A CN117665370A (en) | 2022-08-26 | 2022-08-26 | System for live alarm between ground wire and zero line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211038641.7A CN117665370A (en) | 2022-08-26 | 2022-08-26 | System for live alarm between ground wire and zero line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117665370A true CN117665370A (en) | 2024-03-08 |
Family
ID=90084951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211038641.7A Pending CN117665370A (en) | 2022-08-26 | 2022-08-26 | System for live alarm between ground wire and zero line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117665370A (en) |
-
2022
- 2022-08-26 CN CN202211038641.7A patent/CN117665370A/en active Pending
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