CN211577270U - Automatic alarm device for grounding wire - Google Patents
Automatic alarm device for grounding wire Download PDFInfo
- Publication number
- CN211577270U CN211577270U CN201921967948.9U CN201921967948U CN211577270U CN 211577270 U CN211577270 U CN 211577270U CN 201921967948 U CN201921967948 U CN 201921967948U CN 211577270 U CN211577270 U CN 211577270U
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- filter circuit
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- 238000001514 detection method Methods 0.000 claims abstract description 18
- 230000005684 electric field Effects 0.000 claims abstract description 14
- 210000000056 organ Anatomy 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The utility model discloses an automatic alarm device for ground wires, which comprises a sensor, a rectification filter circuit, a buzzer and a power supply, wherein the rectification filter circuit comprises a filter circuit and a voltage-multiplying rectifier circuit, the sensor detects the electric field intensity and inputs a detection signal into the filter circuit to weaken the higher harmonic of the detection signal, then converts an alternating current signal into a direct current signal through the voltage-multiplying rectifier circuit, and finally inputs the detection signal after rectification and filtration into a locking device, a loudspeaker and an electromagnetic contactor through a signal line; the sensor is arranged at the back of the hand of a person through a fixing band, one end of a normally open switch of the electromagnetic contactor is connected with a power supply, and the other end of the normally open switch is led to the back of the hand at the sensor through a wire and is fixed through the fixing band; the utility model discloses a cooperation between sensor, rectification filter circuit, the bee calling organ realizes the detection to the high-voltage electric field in the job site to warn through bottom line blocking device and megaphone and remind, guarantee personnel's safety.
Description
The technical field is as follows:
the utility model relates to a power transmission and transformation fortune dimension auxiliary assembly especially relates to an earth connection autoalarm.
Background art:
the demand of society to electric power is more and more big now, and simultaneously, the restriction in place still needs people to carry out live working, and in the site operation process, people often can not notice with high-tension apparatus's distance, lead to the emergence of electric shock accident, when installing the earth connection, run into the electrified condition of circuit, can cause electrified mistake to articulate the ground wire, cause the harm to staff's safety.
The utility model has the following contents:
the utility model discloses the technical problem that will solve is: the ground wire automatic alarm device overcomes the defects in the prior art, realizes the detection of a high-voltage electric field in a construction site through the cooperation of the sensor, the rectification filter circuit and the buzzer, and carries out warning and reminding through the bottom wire locking device and the loudspeaker, thereby ensuring the safety of personnel.
The technical scheme of the utility model is that: the utility model provides a ground connection automatic alarm device, includes sensor, rectification filter circuit, bee calling organ and power, and rectification filter circuit includes filter circuit and voltage doubling rectifier circuit, the sensor detects electric field strength to weaken detection signal's higher harmonic in inputting detection signal to filter circuit, then convert alternating current signal into direct current signal through voltage doubling rectifier circuit, at last through the signal line with detection signal input to blocking device, megaphone and electromagnetic contactor after the rectification filters.
Further, the sensor passes through the fixed band setting in personnel back of the hand department, electromagnetic contactor's normally open switch one end is connected with the power, and the other end leads to through the electric wire on the back of the hand of sensor department to fix through the fixed band.
Furthermore, the sensor is an MEMS electric field sensor, the filter circuit adopts a Butterworth low-pass filter, and the voltage-doubling rectifying circuit is a voltage-doubling rectifying circuit.
Furthermore, the power supply is a 6V storage battery power supply, and a booster circuit is arranged between the power supply and the electromagnetic contactor.
The utility model has the advantages that:
1. the utility model discloses a cooperation between sensor, rectification filter circuit, the bee calling organ realizes the detection to the high-voltage electric field in the job site to warn through bottom line blocking device and megaphone and remind, guarantee personnel's safety.
2. The utility model discloses a to the cooperation between the current maturation technology, realize detecting high-tension electric field and report an emergency and ask for help or increased vigilance, the sensor setting is on constructor back of the hand simultaneously, and people are in the course of the work, and what take place the electric shock most easily is the hand, slightly detects convenient and fast to the electric field of the environment that the hand is located in real time.
3. The utility model discloses after detection signal carries out filter circuit and voltage doubling rectifier circuit processing, the realization is to the weakening of higher harmonic to increase signal strength, spread through the signal line, the signal line is the passageway that spreads of signal, provides effectual signal for blocking device, megaphone and electromagnetic contactor.
4. The utility model discloses locking device receives behind the signal to automatic shutting earth connection to prevent electrified mistake and articulate the ground wire, guarantee staff's safety, after the signal was received to the megaphone, send out the sound of reporting an emergency and asking for help or increased vigilance, after electromagnetic contactor received the signal, normally open switch is closed, switch-on boost circuit and power supply circuit make personnel's back of the hand contact 12V voltage, under the effect of human reflection arc, the arm is withdrawed fast to instinct, prevents to electrocute and causes the emergence of increase accident.
Description of the drawings:
fig. 1 is a block diagram of a ground wire automatic alarm device.
Fig. 2 is a circuit diagram of a filter circuit.
Fig. 3 is a circuit diagram of a voltage doubler rectifier circuit.
Fig. 4 is a circuit diagram of the booster circuit.
The specific implementation mode is as follows:
example (b): see fig. 1, 2, 3 and 4.
Ground connection automatic alarm device, including sensor, rectification filter circuit, bee calling organ and power, through the cooperation between sensor, rectification filter circuit, the bee calling organ, realize the detection to the high-voltage electric field in the job site to warn through bottom line blocking device and megaphone and remind, guarantee personnel's safety.
The present application will be described in detail with reference to the following examples and drawings.
The rectification filter circuit comprises a filter circuit and a voltage-multiplying rectifier circuit, the sensor detects the electric field intensity, the detection signal is input into the filter circuit to weaken the higher harmonic of the detection signal, then the alternating current signal is converted into a direct current signal through the voltage-multiplying rectifier circuit, and finally the detection signal after rectification and filtration is input into the locking device, the loudspeaker and the electromagnetic contactor through the signal line.
The sensor passes through the fixed band setting in personnel back of the hand department, and electromagnetic contactor's normally open switch one end is connected with the power, and the other end causes through the electric wire on the back of the hand of sensor department to fix through the fixed band.
The sensor is an MEMS electric field sensor, the filter circuit adopts a Butterworth low-pass filter, and the voltage-doubling rectifying circuit is a voltage-doubling rectifying circuit. The power supply is a 6V storage battery power supply, and a booster circuit is arranged between the power supply and the electromagnetic contactor.
When the portable multifunctional electric hand-held device is used, a person places a power supply in a backpack or a pocket, the Butterworth low-pass filter (printed on a circuit board), the voltage doubling rectifying circuit (printed on the circuit board), the booster circuit (printed on the circuit board) and the electromagnetic contactor are small in size and can be placed together with the power supply, the sensor and the normally open switch output end of the electromagnetic contactor are arranged on the back of the hand of the person and are fixed through a fixing belt, and a signal wire is connected with a control interface of the electromagnetic contactor, an input port of a loudspeaker and a signal input port of a locking device (a grounding wire locking device of electric equipment); in the construction process, when the sensor detects that the electric field intensity is overlarge, a detection signal is sent to the signal wire, the loudspeaker gives an alarm, the grounding wire is locked, the arm of the person can be withdrawn rapidly under the action of 12V voltage, and the person is evacuated from a high-voltage area.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments still fall within the scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides a ground connection autoalarm, includes sensor, rectification filter circuit, bee calling organ and power, characterized by: the rectification filter circuit comprises a filter circuit and a voltage-multiplying rectification circuit, the sensor detects the electric field intensity, inputs a detection signal into the filter circuit to weaken the higher harmonic of the detection signal, converts an alternating current signal into a direct current signal through the voltage-multiplying rectification circuit, and finally inputs the detection signal subjected to rectification and filtration into a locking device, a loudspeaker and an electromagnetic contactor through a signal line.
2. The ground wire automatic alarm device of claim 1, characterized in that: the sensor passes through the fixed band setting in personnel back of the hand department, electromagnetic contactor's normally open switch one end is connected with the power, and the other end leads to through the electric wire on the back of the hand of sensor department to fix through the fixed band.
3. The ground wire automatic alarm device of claim 1, characterized in that: the sensor is an MEMS electric field sensor, the filter circuit adopts a Butterworth low-pass filter, and the voltage-doubling rectifying circuit is a voltage-doubling rectifying circuit.
4. The ground wire automatic alarm device of claim 1, characterized in that: the power is a 6V storage battery power supply, and a booster circuit is arranged between the power supply and the electromagnetic contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921967948.9U CN211577270U (en) | 2019-11-14 | 2019-11-14 | Automatic alarm device for grounding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921967948.9U CN211577270U (en) | 2019-11-14 | 2019-11-14 | Automatic alarm device for grounding wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211577270U true CN211577270U (en) | 2020-09-25 |
Family
ID=72530673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921967948.9U Expired - Fee Related CN211577270U (en) | 2019-11-14 | 2019-11-14 | Automatic alarm device for grounding wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211577270U (en) |
-
2019
- 2019-11-14 CN CN201921967948.9U patent/CN211577270U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200925 |