CN211262516U - Shaft temperature sensor tester - Google Patents
Shaft temperature sensor tester Download PDFInfo
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- CN211262516U CN211262516U CN201921307172.8U CN201921307172U CN211262516U CN 211262516 U CN211262516 U CN 211262516U CN 201921307172 U CN201921307172 U CN 201921307172U CN 211262516 U CN211262516 U CN 211262516U
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Abstract
A shaft temperature sensor tester comprises a PCB bottom plate and is characterized in that five slots are formed in the PCB bottom plate, a power supply plate, a pt1000 acquisition plate with a constant current source, a pt1000 acquisition plate, a pt100 acquisition plate and an 18B20 acquisition plate are inserted into the five slots, 485 communication lines of the power supply plate, the pt1000 acquisition plate with the constant current source, the pt1000 acquisition plate, the pt100 acquisition plate and the 18B20 acquisition plate are all connected with the PCB bottom plate, a serial port of the power supply plate is connected with a computer for data acquisition through a 485 bus output end, and the pt1000 acquisition plate with the constant current source, the pt1000 acquisition plate, the pt100 acquisition plate and the 18B20 acquisition plate are all provided with sockets for inserting and connecting corresponding sensors so as to carry out detection. The utility model provides a detection problem of multiple sensor, realized detecting the function of prevailing axle temperature sensor, to reducing axle temperature alarm fault rate certain contribution.
Description
Technical Field
The utility model relates to a detection technology is a technique of detecting temperature measuring device, and specifically speaking is a temperature measuring device's axle temperature sensor tester that can deal with four kinds of applications different principles.
Background
At present, a railway passenger car is provided with a shaft temperature alarm, the shaft temperature can be monitored in real time, and the alarm is given when a bearing has a fault. The axle temperature alarm generally comprises an axle temperature alarm and sensors, the sensors are customized, the reliability of the axle temperature alarm is guaranteed by a manufacturer, a fault part is inevitable, and once the fault sensor runs on a vehicle, the alarm cannot work, so that the running of equipment is influenced. Therefore, the sensor needs to be re-detected after being received, and an axle temperature alarm can be formed after the sensor is confirmed to be trouble-free.
In the existing axle temperature alarm factories, the sensors are processed by simply running to see whether the alarm is in failure after being connected, and the goods are delivered if the alarm is not in failure. However, the number of sensors is much larger than that of the alarm, the sensors serving as spare parts are delayed according to the requirements of different customers, some spare parts are sent to a passenger car factory without simple detection, and therefore, the function detection of each sensor cannot be achieved under the condition of mixed use and rough means, and a sensor detection device which can deal with various sensors and can work without the alarm needs to be designed.
The sensors installed on the railway passenger car are of the five-flower eight-door type, but most of the sensors are different in structural size, and the temperature measurement principle of most of the sensors is as follows:
(1) the pt1000 resistor is used as a temperature sensitive device, the resistance value is 1000 ohms at 0 ℃, and the resistance value linearly changes with the temperature in the temperature measurement range.
(2) The pt100 resistor is used as a temperature sensitive device, the resistance value is 100 ohms at 0 ℃, and the resistance value linearly changes with the temperature in the temperature measurement range.
(3) The pt1000 resistor of the parallel voltage-stabilizing tube is used as a temperature sensitive device, the resistance value of the pt1000 at 0 ℃ is 1000 ohms, and the resistance value linearly changes with the temperature in the temperature measuring range. The purpose of the design of connecting a voltage-stabilizing tube in parallel is to measure and calculate the impedance of the long cable by inputting different currents and improve the precision of the sensor.
(4) An 18B20 chip is used as a temperature sensitive device, and the output of the 18B20 is digital quantity.
According to the difference of temperature measurement principle, four kinds of temperature measurement integrated circuit boards are designed, and correspond to the sensors of the four kinds of different principle respectively, so that the sensors can be detected after being taken, and the fault part can not be moved on the vehicle.
SUMMERY OF THE UTILITY MODEL
The utility model aims at that current sensor check out test set can only detect the sensor of single model, in the face of a great deal of sensor kind, can't accomplish to detect all sensors, no longer be suitable for, consequently design an axle temperature sensor tester who is applicable to multiple model sensor.
The technical scheme of the utility model is that:
a shaft temperature sensor tester comprises a PCB bottom plate 1 and is characterized in that five slots are formed in the PCB bottom plate 1, a power supply plate 2, a pt1000 collecting plate 3 with a constant current source, a pt1000 collecting plate 4, a pt100 collecting plate 5 and an 18B20 collecting plate 6 are inserted into the five slots, 485 communication lines of the power supply plate 2, the pt1000 collecting plate 3 with the constant current source, the pt1000 collecting plate 4, the pt100 collecting plate 5 and the 18B20 collecting plate 6 are all connected with the PCB bottom plate 1, a serial port of the power supply plate 2 is connected with a computer for data collection through a 485 bus output end, and the pt1000 collecting plate 3 with the constant current source, the pt1000 collecting plate 4, the pt100 collecting plate 5 and the 18B20 collecting plate 6 are all provided with sockets for connecting corresponding sensors in a plug-in mode so as to carry out detection.
And the pt1000 acquisition board 3 with the constant current source, the pt1000 acquisition board 4 with the constant current source, the pt100 acquisition board 5 with the constant current source and the acquisition board 6 with the constant current source 18B20 are provided with sd cards for storing data.
The 485 chip in the 485 communication port adopts an isolation design to protect the sensor data acquisition device and the computer interface.
The input is commercial power 220VAC, the power supply adopts the power module design, and the complete machine has full load power of about 10W.
The utility model has the advantages that:
the utility model provides a detection problem of multiple sensor, realized detecting the function of prevailing axle temperature sensor, to reducing axle temperature alarm fault rate certain contribution.
Drawings
Fig. 1 is an electrical schematic block diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1.
A shaft temperature sensor tester comprises a PCB bottom plate 1, wherein five slots are formed in the PCB bottom plate 1, a power supply plate 2, a pt1000 collecting plate 3 with a constant current source, a pt1000 collecting plate 4, a pt100 collecting plate 5 and an 18B20 collecting plate 6 are inserted in the five slots, 485 communication lines of the power supply plate 2, the pt1000 collecting plate 3 with the constant current source, the pt1000 collecting plate 4, the pt100 collecting plate 5 and the 18B20 collecting plate 6 are all connected with the PCB bottom plate 1, a serial port of the power supply plate 2 is connected with a computer for data collection through a 485 bus output end, and the pt1000 collecting plate 3 with the constant current source, the pt1000 collecting plate 4, the pt100 collecting plate 5 and the 18B20 collecting plate 6 are all provided with plug-in sockets for connecting corresponding sensors so as to carry out detection. And the pt1000 acquisition board 3 with the constant current source, the pt1000 acquisition board 4 with the constant current source, the pt100 acquisition board 5 with the constant current source and the acquisition board 6 with the constant current source 18B20 are provided with sd cards for storing data.
As shown in fig. 1, the data acquisition device of the present invention comprises a pt1000 acquisition board, a pt100 acquisition board, a pt1000 acquisition board with a constant current source, an 18B20 acquisition board, a power board and a bottom board. The four acquisition boards with the constant current source pt1000 acquisition board and the 18B20 acquisition board are respectively plugged on a bottom board together according to the temperature measurement principle of a pt1000 resistor, a pt100 resistor, a pt1000 resistor of a parallel voltage regulator tube and a sensor of an 18B20 chip, and the bottom board is provided with 5 sockets in one-to-one correspondence. The four acquisition boards are respectively provided with an sd card for storing data. The pt1000 acquisition board, the pt100 acquisition board, the pt1000 acquisition board with the constant current source, the 18B20 acquisition board and the power panel are all connected through a 485 bus, and 485 bus signals can be output from a serial port of the power panel.
The utility model discloses an electricity reason picture is shown in fig. 1, the power strip is other collection boards power supplies, the bottom plate has five sockets to play middle wiring effect, collection board collection data, on corresponding collection board is received to arbitrary one sensor according to its temperature measurement principle difference, data is in the sd card of collecting on the board is stored to the board after collection through collection, pass through the 485 bus simultaneously with data through the output of db9 serial port connector through bottom plate-power strip, can use 485 commentaries on classics USB module and host computer PC communication. The conclusion that the sensor is normal or not can be obtained by observing the data output by the sd card or 485.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
Claims (3)
1. The shaft temperature sensor tester comprises a PCB (printed circuit board) bottom board (1), and is characterized in that five slots are formed in the PCB bottom board (1), a power supply board (2), a pt1000 acquisition board (3) with a constant current source, a pt1000 acquisition board (4), a pt100 acquisition board (5) and an 18B20 acquisition board (6) are inserted in the five slots, 485 communication lines of the power supply board (2), the pt1000 acquisition board (3) with the constant current source, the pt1000 acquisition board (4), the pt100 acquisition board (5) and the 18B20 acquisition board (6) are all connected with the PCB bottom board (1), serial ports of the power supply board (2) are connected with a computer for data acquisition through a bus output end, and 485 sockets with the constant current source pt1000 acquisition board (3), the pt1000 acquisition board (4), the pt100 acquisition board (5) and the 18B20 acquisition board (6) are all provided with corresponding sensors in plug-in connection so as to carry out detection.
2. The shaft temperature sensor tester according to claim 1, wherein the pt1000 acquisition board (3), the pt1000 acquisition board (4), the pt100 acquisition board (5) and the 18B20 acquisition board (6) with the constant current source are provided with sd cards for storing data.
3. The shaft temperature sensor tester as claimed in claim 1, wherein the 485 chips in the 485 communication ports are isolated to protect the sensor data acquisition device and the computer interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921307172.8U CN211262516U (en) | 2019-08-13 | 2019-08-13 | Shaft temperature sensor tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921307172.8U CN211262516U (en) | 2019-08-13 | 2019-08-13 | Shaft temperature sensor tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211262516U true CN211262516U (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921307172.8U Active CN211262516U (en) | 2019-08-13 | 2019-08-13 | Shaft temperature sensor tester |
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| CN (1) | CN211262516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112849207A (en) * | 2021-01-08 | 2021-05-28 | 株洲中车时代电气股份有限公司 | Shaft temperature detection system and shaft temperature detection method |
-
2019
- 2019-08-13 CN CN201921307172.8U patent/CN211262516U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112849207A (en) * | 2021-01-08 | 2021-05-28 | 株洲中车时代电气股份有限公司 | Shaft temperature detection system and shaft temperature detection method |
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