CN210293275U - Multi-sensor joint detection switch cabinet partial discharge device based on single Beidou - Google Patents
Multi-sensor joint detection switch cabinet partial discharge device based on single Beidou Download PDFInfo
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- CN210293275U CN210293275U CN201920288340.7U CN201920288340U CN210293275U CN 210293275 U CN210293275 U CN 210293275U CN 201920288340 U CN201920288340 U CN 201920288340U CN 210293275 U CN210293275 U CN 210293275U
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Abstract
A single-Beidou-based multi-sensor combined detection switch cabinet partial discharge device comprises a temperature sensor module and a signal comparison circuit thereof, a sound sensor module and a signal comparison circuit thereof, an ozone sensor module and a signal comparison circuit thereof, an ultraviolet light sensor module and a signal comparison circuit thereof, a microprocessor and a Beidou short message module; wherein: the output end of each sensor module is connected with the input end of the corresponding signal comparison circuit; the temperature sensor module, the sound sensor module, the ozone sensor module and the ultraviolet light sensor module respectively collect temperature information, sound intensity information, ozone content information and light intensity signals in the switch cabinet; the output ends of the signal comparison circuits are connected with the input end of the microprocessor; the microprocessor is connected with the Beidou short message module. The device transmits out signals through the Beidou short message module by detecting environmental signals in the switch cabinet to realize alarming, and simultaneously positions the switch cabinet with partial discharge.
Description
Technical Field
The utility model relates to a signal processing technology field, concretely relates to multisensor jointly detects cubical switchboard office and puts device based on single big dipper.
Background
The power equipment is an important guarantee for the safety of super-large-scale power transmission and distribution and power grids. As a widely used electric device, the safety and reliability of the high voltage switch cabinet are also receiving more attention. According to statistics, the rate of failures due to insulation deterioration or contact failure is high. Before the fault occurs, partial discharge and other phenomena may exist in the high-voltage switch cabinet. Therefore, the running state of the equipment can be detected through the related equipment, so that the trouble can be prevented. However, in terms of communication of the detection equipment, the communication equipment faces a plurality of problems, one of the problems is that the fault signal transmission is carried out only by a common communication module, and when the regional network signal is unstable, especially under the condition that the network signal is intermittently switched on and off, the fault signal cannot be accurately transmitted to a receiving end in real time, so that operation and maintenance personnel can not perform judgment missing and judgment mistakenly and can not perform maintenance processing on the equipment in time; secondly, in a switch cabinet dense area, a common communication module cannot accurately position the position of a fault switch cabinet, and secondary troubleshooting is easily caused; this has not only influenced operation maintainer's work efficiency, has also buried the potential safety hazard for the normal operating of cubical switchboard moreover. In view of this, how to effectively find the partial discharge fault and the specific position thereof in the switch cabinet and enable the staff to timely maintain is a problem that the power supervision department is concerned with and needs to solve urgently.
The electrical equipment always generates uniform buzzing sound due to mechanical vibration during operation, and the sound under normal operation has certain regularity. When a certain fault occurs in the equipment, the sound emitted by the equipment is changed due to the change of the operation state. Whether the equipment is in an abnormal operation state or not can be judged through changes of audio characteristics such as tone color, volume, frequency and the like of sound, and even the type and the severity of a fault can be judged. During normal operation, a generally uniform "buzzing" sound is experienced, while during failure, a "scratching" or "squeaking" sound occurs, accompanied by an increase in temperature, flashing and a change in ozone concentration. Therefore, the monitoring of the electric facilities in the switch cabinet can be realized according to the environmental change.
Disclosure of Invention
1. The technical problem to be solved is as follows:
in order to solve the technical problem, the utility model provides a device is put in multisensor joint detection cubical switchboard office based on single big dipper, can provide data support for early diagnosis, the problem that fault information can not in time arrive and leak and examine when network signal is not good can be solved to wireless big dipper short message transmission bi-pass fast mode, when signal transmission to alarm module, because big dipper has precision height, the location position, advantages such as low power dissipation, can accurately send position information to the terminal, practice thrift the rush-repair time. The detection precision is improved, and the first-aid repair time is saved.
2. The technical scheme is as follows:
a single-Beidou-based multi-sensor combined detection switch cabinet partial discharge device comprises a temperature sensor module and a signal comparison circuit thereof, a sound sensor module and a signal comparison circuit thereof, an ozone sensor module and a signal comparison circuit thereof, an ultraviolet light sensor module and a signal comparison circuit thereof, a microprocessor and a Beidou short message module; wherein: the output end of each sensor module is connected with the input end of the corresponding signal comparison circuit; the temperature sensor module, the sound sensor module, the ozone sensor module and the ultraviolet light sensor module respectively collect temperature information, sound intensity information, ozone content information and light intensity signals in the switch cabinet; the output ends of the signal comparison circuits are connected with the input end of the microprocessor; the microprocessor is connected with the Beidou short message module.
Further, the signal comparison circuit comprises a voltage stabilizer U1, a comparator U2 and an optical coupler U3; the specific circuit is as follows: one end of the resistor R4 is connected with the supply voltage V1, and the other end is connected with a cathode pin of the voltage stabilizer U1; one end of the resistor R1 is connected with the cathode pin of the voltage stabilizer U1, and the other end of the resistor R1 is connected with the resistor R2 and the ref pin of the voltage stabilizer U1; the other end of the resistor R2 is connected with the pin of the voltage stabilizer U1 anode and grounded; one end of the resistor R3 is connected with the other end of the resistor R4, and the other end of the resistor R is connected with the positive pin of the comparator U2; the output voltage V3 of the sensor module is connected to the negative pin of a comparator U2; the output end of the comparator U2 is connected with the negative pin of the light-emitting diode of the optical coupler U3; one end of the resistor R5 is connected with a power supply, and the other end of the resistor R6 is connected with the positive pin of the light emitting diode of the optocoupler U3; the other end of the resistor R6 is grounded; the E pole of a photosensitive triode in the optical coupler U3 is connected with the microprocessor and is connected with one end of a resistor R7; the other end of the resistor R7 is connected to a power supply voltage V2.
Further, the voltage stabilizer U1 is an LMV431 chip.
Further, the Zigbee wireless transmission device also comprises a Zigbee wireless transmission module; and the Zigbee wireless transmission module is connected with the microprocessor.
3. Has the advantages that:
(1) the utility model discloses according to the probably temperature rise that appears when cubical switchboard partial discharge, sound grow, four kinds of sensor detections have been chooseed for use respectively to the characteristic of ozone content change and production spark, are temperature sensor, sound sensor, ozone sensor and ultraviolet light sensor respectively. In the actual use process, when two of the collected temperature, sound, ozone concentration and ultraviolet data exceed set values, the corresponding signal comparison circuit sends a low level to the microprocessor, and the low level is normally a high level. When the microprocessor receives a low-level signal, the signal can be transmitted out through the Beidou short message module to achieve alarming, and meanwhile, the switch cabinet with partial discharge is positioned. The condition of misjudgment during manual detection is avoided, labor is saved, and the detection precision is improved; the wireless module sends the four daily detection data to the background, and data support can be provided for early diagnosis.
(2) The utility model discloses a big dipper terminal that is equipped with big dipper short message module under the condition that ordinary communication signal can not cover just can carry out urgent communication through short message. In addition, the Beidou short message module and the handheld terminal (Beidou mobile phone) are combined for positioning. If the wireless communication signal is poor or an emergency situation occurs, the Beidou short message can provide high-safety and high-stability transmission and rapidly give an alarm, and the positioning function of the Beidou short message is used for helping maintainers to rapidly find out a fault switch cabinet, so that the rush-repair time is saved, and the social and economic losses are reduced.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a circuit diagram of the middle signal comparison circuit of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings;
as shown in figure 1: a single-Beidou-based multi-sensor combined detection switch cabinet partial discharge device comprises a temperature sensor module and a signal comparison circuit thereof, a sound sensor module and a signal comparison circuit thereof, an ozone sensor module and a signal comparison circuit thereof, an ultraviolet light sensor module and a signal comparison circuit thereof, a microprocessor and a Beidou short message module; wherein: the output end of each sensor module is connected with the input end of the corresponding signal comparison circuit; the temperature sensor module, the sound sensor module, the ozone sensor module and the ultraviolet light sensor module respectively collect temperature information, sound intensity information, ozone content information and light intensity signals in the switch cabinet; the output ends of the signal comparison circuits are connected with the input end of the microprocessor; the microprocessor is connected with the Beidou short message module.
As shown in fig. 2: the signal comparison circuit comprises a voltage stabilizer U1, a comparator U2 and an optical coupler U3; the specific circuit is as follows: one end of the resistor R4 is connected with the supply voltage V1, and the other end is connected with a cathode pin of the voltage stabilizer U1; one end of the resistor R1 is connected with the cathode pin of the voltage stabilizer U1, and the other end of the resistor R1 is connected with the resistor R2 and the ref pin of the voltage stabilizer U1; the other end of the resistor R2 is connected with the pin of the voltage stabilizer U1 anode and grounded; one end of the resistor R3 is connected with the other end of the resistor R4, and the other end of the resistor R is connected with the positive pin of the comparator U2; the output voltage V3 of the sensor module is connected to the negative pin of a comparator U2; the output end of the comparator U2 is connected with the negative pin of the light-emitting diode of the optical coupler U3; one end of the resistor R5 is connected with a power supply, and the other end of the resistor R6 is connected with the positive pin of the light emitting diode of the optocoupler U3; the other end of the resistor R6 is grounded; the E pole of a photosensitive triode in the optical coupler U3 is connected with the microprocessor and is connected with one end of a resistor R7; the other end of the resistor R7 is connected to a power supply voltage V2. Wherein the preset voltage value of each different sensor is adjusted by adjusting the sizes of the resistors R1 and R2.
Further, the voltage stabilizer U1 is an LMV431 chip.
Further, the Zigbee wireless transmission device also comprises a Zigbee wireless transmission module; and the Zigbee wireless transmission module is connected with the microprocessor.
The utility model discloses in, the temperature sensor module is used for gathering cubical switchboard temperature data, and the sound sensor module is used for gathering the cubical switchboard office sound event of putting, and ozone sensor module is used for gathering cubical switchboard ozone concentration data, and the ultraviolet ray sensor module is used for gathering cubical switchboard ultraviolet ray data, and data memory is used for storing the temperature, sound, ozone concentration and the ultraviolet ray intensity data this four kinds of data of gathering. The temperature sensor module, the sound sensor module, the ozone sensor module and the ultraviolet light sensor module are used as the input of the system, data are collected and processed and then are stored locally for the microprocessor, and when the collected temperature, sound, ozone concentration and ultraviolet light data are output to the microprocessor through the signal comparison circuit shown in the attached figure 2. The preset voltage value is set by changing the values of the resistors R1 and R2 in the signal comparison circuit, and when the voltage value exceeds the preset voltage value, the low level is sent to the microprocessor, and when the voltage value is normal, the high level is sent. When the microprocessor receives at least two low level signals, the microprocessor can start a switch circuit of the Beidou short message module to transmit signals through the Beidou short message module, and meanwhile, the switch cabinet with partial discharge is positioned.
The temperature signal comparison circuit, the sound signal comparison circuit, the ozone signal comparison circuit and the ultraviolet light signal comparison circuit have the same principle, the only difference is that the resistance values of the resistors R1 and R2 are different, the resistance values of the two resistors are adjusted, and set values for detecting different parameters can be set respectively.
Specifically, the temperature sensing module is used for detecting the temperature condition of the switch cabinet. The temperature sensor module converts the temperature detection value into a voltage value V3 as an input voltage of the input end of the comparator. Different voltage values V3 correspond to different temperatures. The resistor R1, the resistor R2 and the voltage regulator U1 form a voltage stabilizing circuit. The stabilized voltage value V0 generated by the circuit is used as a threshold voltage, namely an alarm temperature, and is used as an input voltage of the positive input end of the comparator U2, and the comparator U2 compares and outputs the detection voltage V3 with the set voltage V0. When the alarm temperature is exceeded, namely V3 is greater than V0, the comparator U2 outputs low level, the optocoupler U3 is conducted, and V4 is low level; below this temperature, i.e. V3 is less than V0, the comparator U2 sends a high level, the optocoupler U3 is non-conductive and V4 is high.
In a similar way, the sound sensing module is used for detecting the sound signal of the switch cabinet. The resistor R1, the resistor R2 and the voltage stabilizer U1 form a voltage stabilizing circuit; the sound sensor module converts the decibel level of the detected sound into different voltage values V3; presetting a preset value V0 of decibels by presetting the resistance values of R1 and R2; when the V3 is larger than the V0, the comparator U2 outputs a low level, the optocoupler U3 is not conducted, and the V4 is at a low level; when V3 is less than V0, a high level is output, the optocoupler U2 is conducted, and V4 is a high level.
Similarly, the ozone sensing module is used for detecting the ozone concentration of the switch cabinet. The resistor R1, the resistor R2 and the voltage stabilizer U1 form a voltage stabilizing circuit; the ozone sensor module converts the detected ozone gas concentration into a different voltage value V3; presetting a preset value V0 of decibels by presetting the resistance values of R1 and R2; when the V3 is larger than the V0, the comparator U2 outputs a low level, the optocoupler U3 is not conducted, and the V4 is at a low level; when V3 is less than V0, a high level is output, the optocoupler U2 is conducted, and V4 is a high level.
In a similar way, the ultraviolet light sensing module is used for detecting optical signals of the switch cabinet. The resistor R1, the resistor R2 and the voltage stabilizer U1 form a voltage stabilizing circuit; the ultraviolet light sensing module converts the detected light signals into different voltage values V3; presetting a preset value V0 of decibels by presetting the resistance values of R1 and R2; when the V3 is larger than the V0, the comparator U2 outputs a low level, the optocoupler U3 is not conducted, and the V4 is at a low level; when V3 is less than V0, a high level is output, the optocoupler U2 is conducted, and V4 is a high level.
If any two or more than two of the four signal comparison circuits send low-level signals, the output end of the microprocessor is connected with an RX port of the Beidou short message chip, the signals are transmitted to the alarm module and the display module through the Beidou short message module, and the positioning information is sent to the handheld terminal, so that a maintainer can navigate according to the positioning information to quickly find the switch cabinet with partial discharge. Otherwise, the control signal is transmitted to the display module through the normal wireless communication Zigbee module.
Claims (4)
1. The utility model provides a device is put in multi-sensor joint detection cubical switchboard office based on single big dipper which characterized in that: the device comprises a temperature sensor module and a signal comparison circuit thereof, a sound sensor module and a signal comparison circuit thereof, an ozone sensor module and a signal comparison circuit thereof, an ultraviolet light sensor module and a signal comparison circuit thereof, a microprocessor and a Beidou short message module; wherein: the output end of each sensor module is connected with the input end of the corresponding signal comparison circuit; the temperature sensor module, the sound sensor module, the ozone sensor module and the ultraviolet light sensor module respectively collect temperature information, sound intensity information, ozone content information and light intensity signals in the switch cabinet; the output ends of the signal comparison circuits are connected with the input end of the microprocessor; the microprocessor is connected with the Beidou short message module.
2. The single-Beidou-based multi-sensor combined detection switch cabinet partial discharge device according to claim 1, characterized in that: the signal comparison circuit comprises a voltage stabilizer U1, a comparator U2 and an optical coupler U3; the specific circuit is as follows: one end of the resistor R4 is connected with the supply voltage V1, and the other end is connected with a cathode pin of the voltage stabilizer U1; one end of the resistor R1 is connected with the cathode pin of the voltage stabilizer U1, and the other end of the resistor R1 is connected with the resistor R2 and the ref pin of the voltage stabilizer U1; the other end of the resistor R2 is connected with the pin of the voltage stabilizer U1 anode and grounded; one end of the resistor R3 is connected with the other end of the resistor R4, and the other end of the resistor R is connected with the positive pin of the comparator U2; the output voltage V3 of the sensor module is connected to the negative pin of a comparator U2; the output end of the comparator U2 is connected with the negative pin of the light-emitting diode of the optical coupler U3; one end of the resistor R5 is connected with a power supply, and the other end of the resistor R6 is connected with the positive pin of the light emitting diode of the optocoupler U3; the other end of the resistor R6 is grounded; the E pole of a photosensitive triode in the optical coupler U3 is connected with the microprocessor and is connected with one end of a resistor R7; the other end of the resistor R7 is connected to a power supply voltage V2.
3. The single-Beidou-based multi-sensor combined detection switch cabinet partial discharge device according to claim 2, characterized in that: the model of the voltage stabilizer U1 is an LMV431 chip.
4. The single-Beidou-based multi-sensor combined detection switch cabinet partial discharge device according to claim 1, characterized in that: the Zigbee wireless transmission module is also included; and the Zigbee wireless transmission module is connected with the microprocessor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920288340.7U CN210293275U (en) | 2019-03-07 | 2019-03-07 | Multi-sensor joint detection switch cabinet partial discharge device based on single Beidou |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920288340.7U CN210293275U (en) | 2019-03-07 | 2019-03-07 | Multi-sensor joint detection switch cabinet partial discharge device based on single Beidou |
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| CN210293275U true CN210293275U (en) | 2020-04-10 |
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| CN201920288340.7U Active CN210293275U (en) | 2019-03-07 | 2019-03-07 | Multi-sensor joint detection switch cabinet partial discharge device based on single Beidou |
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