CN215575349U - Intelligent fault current monitoring terminal - Google Patents
Intelligent fault current monitoring terminal Download PDFInfo
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- CN215575349U CN215575349U CN202122079705.5U CN202122079705U CN215575349U CN 215575349 U CN215575349 U CN 215575349U CN 202122079705 U CN202122079705 U CN 202122079705U CN 215575349 U CN215575349 U CN 215575349U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 230000006698 induction Effects 0.000 claims abstract description 8
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 7
- 230000003993 interaction Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000003449 preventive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The utility model discloses an intelligent fault current monitoring terminal, which comprises: the host is used for storing and calculating data; the slave machine is connected with the host machine and used for sending the collected current data to the host machine; the slave machine comprises an alternating current sensor, an AD conversion chip and an MCU, the alternating current sensor is connected with the AD conversion chip to perform AD conversion on an induction signal, the AD conversion chip is connected with the MCU to transmit the converted induction signal, and the MCU is connected with the host machine through an RS485 interface chip. The intelligent fault current monitoring terminal can sample and monitor the current of the grounding wire in real time; temperature and environmental information of the monitoring site can be monitored.
Description
Technical Field
The utility model relates to the technical field of monitoring of ground fault current of a power supply system of a railway vehicle communication mechanical room, in particular to an intelligent fault current monitoring terminal.
Background
At present, the mode of manually taking monitoring equipment to perform sampling monitoring is adopted for monitoring the ground fault current of the power supply system of the railway vehicle communication mechanical room, the monitoring data change is large and extremely inconvenient, real-time sampling and monitoring of the ground fault current cannot be achieved, if the fault current is too large during testing and is not found in time, potential safety hazards and safety accidents are easily caused, and in addition, the labor intensity is increased by the manual testing mode.
Based on the technical problems in the prior art, the utility model provides an intelligent fault current monitoring terminal.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems in the prior art, the utility model provides an intelligent fault current monitoring terminal.
The utility model adopts the following technical scheme:
a fault current intelligent monitoring terminal comprises:
the host is used for storing and calculating data;
the slave machine is connected with the host machine and used for sending the collected current data to the host machine;
the slave machine comprises an alternating current sensor, an AD conversion chip and an MCU, the alternating current sensor is connected with the AD conversion chip to perform AD conversion on an induction signal, the AD conversion chip is connected with the MCU to transmit the converted induction signal, and the MCU is connected with the host machine through an RS485 interface chip.
Further, the host machine compares the received current data with a standard current value to know whether a ground fault occurs.
Further, the host computer still includes the main control board, the main control board includes 3 485 interfaces, 3 232 interfaces, 2I 2C interfaces, 1 SPI interface, 1 LAN mouth, 1 USB interface, 6 LED interfaces.
Further, the alternating current sensor comprises a silicon steel sheet and a mutual inductance coil wound on the silicon steel sheet.
Furthermore, the host is connected with a touch screen for man-machine interaction, parameter setting, information inquiry and fault alarm.
Further, the host is also connected with a switching power supply.
Further, the switching power supply is connected to the slave.
Further, the slave is connected to a third party platform.
Further, the input of the switching power supply is input AC220V, and the output is DC 12V.
Further, the alternating current sensor is installed at a ground wire monitoring point.
Further, mutual inductor includes casing, lower casing, first coil, second coil and articulated shaft, go up the casing with the casing passes through down the articulated shaft is connected, first coil is fixed to be set up go up on the casing, the second coil is fixed to be set up down on the casing, first coil with the second coil is the semicircle type, works as go up the casing lid and close when on the casing down, first coil with second coil interconnect forms ring form circle coil, go up the casing with the casing is equipped with otic placode and lower otic placode respectively down, go up and all seted up the bolt hole on otic placode and the lower otic placode, work as go up the casing lid and close when the casing is gone up down, will through the bolt go up the otic placode with the otic placode is fixed down.
Further, the bottom end of the lower shell is fixedly provided with a base, so that the alternating current sensor can be fixedly installed.
Furthermore, the slave machine further comprises a temperature sensor, the temperature sensor is connected to the MCU, the temperature sensor sends temperature information of the slave machine and the grounding wire to the MCU, and the MCU sends the temperature information to the host machine.
Further, the slave machine further comprises an environment sensor, the environment sensor is connected to the MCU, and the environment sensor sends environment information of the position where the alternating current sensor is located to the MCU.
Compared with the prior art, the utility model has the following advantages:
1. according to the intelligent fault current monitoring terminal, the current of the grounding wire can be sampled and monitored in real time through the matching arrangement of the host and the slave;
2. according to the intelligent fault current monitoring terminal, the temperature and the environmental information of a monitoring place can be monitored by the intelligent fault current monitoring terminal through the arrangement of the temperature sensor and the environmental sensor;
3. according to the intelligent fault current monitoring terminal, the mutual inductor which is in an open-close design is adopted, so that the installation of monitoring equipment is facilitated.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent fault current monitoring terminal in an embodiment of the present invention;
fig. 2 is a schematic diagram of the structure of the mutual inductor in the embodiment of the present invention.
In the figure, 1-host computer, 11-touch screen, 2-slave computer, 21-AC sensor, 211-upper shell, 212-lower shell, 213-first coil, 214-second coil, 215-articulated shaft, 216-base, 22-AD conversion chip, 23-MCU, 3-switching power supply.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments, it being understood that the embodiments and features of the embodiments of the present application can be combined with each other without conflict.
Examples
As shown in fig. 1, the intelligent fault current monitoring terminal includes:
the host 1 is used for storing and calculating data;
the slave machine 2 is connected to the host machine 1 so as to send the collected current data to the host machine 1;
the slave 2 comprises an alternating current sensor 21, an AD conversion chip 22 and an MCU23, the alternating current sensor 21 is connected to the AD conversion chip 22 to perform AD conversion on induction signals, the AD conversion chip 22 is connected to the MCU23 to transmit the converted induction signals, and the MCU23 is connected to the host 1 through an RS485 interface chip;
the alternating current sensor 21 comprises a silicon steel sheet and a mutual inductance coil wound on the silicon steel sheet;
in the above embodiment, the intelligent fault current monitoring terminal is configured to implement real-time monitoring of the magnitude of a current flowing through a ground wire, a copper insulation coil is wound on a high-density silicon steel sheet to form a mutual inductor, the mutual inductor is installed at a ground wire monitoring point, a small current signal induced by the mutual inductor is connected to the MCU23 through the AD conversion chip 22 for data processing, and processed data information is connected to the external host 1 through a communication interface chip to implement data acquisition, conversion, storage and display;
as an improvement of the above embodiment, as shown in fig. 2, the mutual inductor is designed in an open-close structure, so that the ac sensor 21 is conveniently installed at a ground wire monitoring point;
the mutual inductor comprises an upper shell 211, a lower shell 212, a first coil 213, a second coil 214 and a hinge shaft 215, wherein the upper shell 211 and the lower shell 212 are connected through the hinge shaft 215, the first coil 213 is fixedly arranged on the upper shell 211, the second coil 214 is fixedly arranged on the lower shell 212, the first coil 213 and the second coil 214 are both semicircular, when the upper shell 211 is covered on the lower shell 212, the first coil 213 and the second coil 214 are mutually connected to form a circular coil, the upper shell 211 and the lower shell 212 are respectively provided with an upper ear plate and a lower ear plate, the upper ear plate and the lower ear plate are both provided with bolt holes, and when the upper shell 211 is covered on the lower shell 212, the upper ear plate and the lower ear plate are fixed through bolts;
further, a base 216 is fixedly disposed at the bottom end of the lower housing 211 to facilitate the fixed installation of the ac sensor 21.
The host 1 comprises a core control and acquisition unit, a power supply unit, a ROM/RAM storage unit, an LED display state unit and a communication unit (not shown in the figure), wherein the power supply unit, the ROM/RAM storage unit, the LED display state unit and the communication unit are all connected to the core control and acquisition unit, and the host 1 can know whether the ground fault occurs or not by comparing the received current data sent by the alternating current sensor 21 with a standard current value (stored in the ROM/RAM storage unit); when a ground fault occurs, the core control and acquisition unit sends a fault signal to the LED display state unit and the communication unit, the LED display state unit displays the fault, the communication unit sends out fault information, and the core control and acquisition unit adopts a single chip microcomputer;
the host 1 further comprises a main control board (not shown in the figure), wherein the main control board comprises 3 485 interfaces, 3 232 interfaces, 2I 2C interfaces, 1 SPI interface, 1 LAN interface, 1 USB interface and 6 LED interfaces;
the host 1 is connected with a touch screen 11 for man-machine interaction, parameter setting, information inquiry and fault alarm;
the host 1 is also connected with a switching power supply 3;
the switching power supply 3 is connected to the slave 2;
the slave 2 is connected with a third party platform;
the input of the switching power supply 3 is input AC220V, and the output is DC 12V;
the slave 2 further comprises a temperature sensor, the temperature sensor is connected to the MCU23, the temperature sensor sends temperature information of the slave 1 and a ground wire to the MCU23, and the MCU23 sends the temperature information to the master 1;
in the above embodiment, the temperature sensors are arranged to monitor the temperatures of the slave 2 and the ground wire in real time, and when the temperature is abnormal, early warning is timely performed and preventive protection is performed on the slave 2 and the ground wire;
the temperature sensor is an IC temperature sensor.
The slave machine 2 further comprises an environment sensor, the environment sensor is connected to the MCU23, and the environment sensor sends environment information of the position where the alternating current sensor is located to the MCU;
in the above embodiments, the environmental sensor is one or more of a humidity sensor, an atmospheric environmental sensor, and a rainfall sensor.
The present invention is not limited to the above-described embodiments, which are described in the specification and illustrated only for illustrating the principle of the present invention, but various changes and modifications may be made within the scope of the present invention as claimed without departing from the spirit and scope of the present invention.
Claims (9)
1. The utility model provides a fault current intelligent monitoring terminal which characterized in that includes:
the host is used for storing and calculating data;
the slave machine is connected with the host machine and used for sending the collected current data to the host machine;
the slave machine comprises an alternating current sensor, an AD conversion chip and an MCU, wherein the alternating current sensor is connected to the AD conversion chip to perform AD conversion on induction signals, the AD conversion chip is connected to the MCU to send the converted induction signals, and the MCU is connected to the host machine through an RS485 interface chip;
the slave machine also comprises a temperature sensor, and the temperature sensor is connected to the MCU;
the slave machine further comprises an environment sensor, and the environment sensor is connected to the MCU.
2. The intelligent fault current monitoring terminal according to claim 1, wherein the host machine obtains whether a ground fault occurs by comparing the received current data with a standard current value.
3. The intelligent fault current monitoring terminal according to claim 1, wherein the host is a main control board, and the main control board includes 3 485 interfaces, 3 232 interfaces, 2I 2C interfaces, 1 SPI interface, 1 LAN interface, 1 USB interface, and 6 LED interfaces.
4. The fault current intelligent monitoring terminal according to claim 1, wherein the ac sensor comprises a silicon steel sheet and a mutual inductor wound on the silicon steel sheet, the mutual inductor comprises an upper shell, a lower shell, a first coil, a second coil and a hinge shaft, the upper shell and the lower shell are connected through the hinge shaft, the first coil is fixedly arranged on the upper shell, the second coil is fixedly arranged on the lower shell, the first coil and the second coil are both semi-circular, the upper shell and the lower shell are respectively provided with an upper ear plate and a lower ear plate, and bolt holes are formed in the upper ear plate and the lower ear plate.
5. The intelligent fault current monitoring terminal according to claim 1, wherein the host is connected with a touch screen for human-computer interaction, parameter setting, information inquiry and fault alarm.
6. The intelligent fault current monitoring terminal according to claim 1, wherein the host is further connected with a switching power supply.
7. The intelligent fault current monitoring terminal according to claim 6, wherein the switching power supply is connected to the slave machine.
8. The intelligent fault current monitoring terminal according to claim 6 or 7, wherein the input of the switching power supply is input AC220V, and the output is DC 12V.
9. The intelligent fault current monitoring terminal according to claim 1, wherein the ac sensor is installed at a ground wire monitoring point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079705.5U CN215575349U (en) | 2021-08-31 | 2021-08-31 | Intelligent fault current monitoring terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079705.5U CN215575349U (en) | 2021-08-31 | 2021-08-31 | Intelligent fault current monitoring terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215575349U true CN215575349U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122079705.5U Active CN215575349U (en) | 2021-08-31 | 2021-08-31 | Intelligent fault current monitoring terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215575349U (en) |
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2021
- 2021-08-31 CN CN202122079705.5U patent/CN215575349U/en active Active
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Address after: Room 35058, 5th Floor, No. 3 Shuangqing Road, Haidian District, Beijing, 100089 Patentee after: Beijing Tsinghua Technology Co.,Ltd. Address before: 100083 Beijing Haidian District Xueyuan Road 29 120 building 115 rooms. Patentee before: Beijing Tsinghua Technology Co.,Ltd. |
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