CN211717371U - Temperature compensation module for differential transformer type measuring system and measuring system - Google Patents
Temperature compensation module for differential transformer type measuring system and measuring system Download PDFInfo
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- CN211717371U CN211717371U CN202020770334.8U CN202020770334U CN211717371U CN 211717371 U CN211717371 U CN 211717371U CN 202020770334 U CN202020770334 U CN 202020770334U CN 211717371 U CN211717371 U CN 211717371U
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- signal amplifier
- differential transformer
- compensation module
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Abstract
The utility model discloses a differential transformer formula temperature compensation module for measurement system, including signal amplifier, PCB board, temperature sensor and casing the middle part of casing is provided with the PCB board, and the PCB board facing is equipped with signal amplifier, temperature sensor is equipped with in the casing, and signal amplifier, temperature sensor and casing all contactless, and it has the heat conduction material still to fill in the casing, still be provided with the row needle that is used for connecting circuit board among the measurement system on the PCB board. The utility model also discloses a differential transformer formula measurement system, measurement system include little the control unit MCU and foretell differential transformer formula temperature compensation module for measurement system, little the control unit MCU is connected with the PCB board electricity. The temperature compensation module enables the signal amplifier to be in a relatively stable environment, and compensates the displacement signal output by the signal amplifier, so that the stability and the accuracy of the whole measurement system are improved; the utility model discloses simple structure, easy to carry out.
Description
Technical Field
The utility model belongs to the technical field of measure, concretely relates to differential transformer formula temperature compensation module for measurement system and have this temperature compensation module's measurement system.
Background
The differential transformer type sensor has the advantages of no friction measurement, infinite mechanical life, infinite resolution, zero repeatability, firmness, durability, strong environmental adaptability, input and output isolation and the like, and is widely applied to the national economy industries such as aerospace, construction, machinery, chemical industry, machine tools, measurement, scientific research institutes and the like.
The differential transformer type sensor is commonly used for measuring displacement and comprises a linear variable differential transformer LVDT capable of measuring linear displacement and a rotary variable differential transformer RVDT capable of measuring angular displacement, but the differential transformer type sensor can not be used alone and needs to be combined with other parts to form a measuring system for use. In the whole measuring system, the performance of the signal amplifier directly influences the quality of the measuring system. In the prior art, the signal amplifier is subject to the variation of the external temperature to cause the output displacement signal to be inaccurate, which directly affects the stability and accuracy of the whole measuring system.
SUMMERY OF THE UTILITY MODEL
The utility model discloses plan to provide a differential transformer formula temperature compensation module for measurement system, with signal amplifier setting in the casing, constitute the temperature compensation module, install the temperature compensation module again on original circuit PCB board, make signal amplifier be in the relatively stable environment in, compensate signal amplifier output displacement signal simultaneously to promote whole measurement system's stability and precision.
Therefore, the utility model discloses the technical scheme who adopts does: the utility model provides a differential transformer formula temperature compensation module for measurement system, includes signal amplifier and casing, the casing intussuseption is filled with the heat conduction material the middle part of heat conduction material is provided with the PCB board, the signal amplifier is equipped with in the subsides of PCB board, still is provided with temperature sensor on the PCB board, and separates with the heat conduction material between signal amplifier, temperature sensor and the casing, still be provided with the row needle that is arranged in connecting the measurement system circuit board on the PCB board.
Preferably, the shell is a metal shell, and the metal shell is not easy to deform at different temperatures.
Further preferably, the signal amplifier adopts an AD698 chip, and the AD698 chip has high integration and can be matched with the LVDT and the RVDT for use.
And simultaneously, the utility model provides a differential transformer formula measurement system still, measurement system includes little the control unit MCU and foretell differential transformer formula temperature compensation module for measurement system, little the control unit MCU is connected with the PCB board electricity.
The utility model has the advantages that: the signal amplifier in the measuring system is directly connected with the circuit board, the signal amplifier is placed in the shell to form the temperature compensation module, and then the temperature compensation module is installed on the circuit board, so that the output displacement signal of the signal amplifier can be compensated, the signal amplifier is prevented from being inaccurate in output displacement signal caused by external temperature change, and the accuracy of the whole measuring system is improved; meanwhile, the heat conduction material is filled in the shell, so that the signal amplifier is in a relatively stable environment, the stability of outputting displacement signals is facilitated, and the stability of the whole measuring system is improved; the utility model discloses simple structure, easy to carry out.
Drawings
Fig. 1 is a schematic structural diagram of the temperature compensation module after installation.
FIG. 2 is a schematic diagram of modeling the compensation amount of the displacement signal of the measurement system.
Fig. 3 is a schematic diagram of a system compensation process when the measurement system is in use.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
as shown in fig. 1-3, a temperature compensation module for a differential transformer type measurement system mainly comprises a signal amplifier 1 and a housing 4, wherein the housing 4 is filled with a heat conduction material 5, a PCB 2 is arranged in the middle of the heat conduction material 5, the PCB 2 is attached with the signal amplifier 1, the PCB 2 is further provided with a temperature sensor 3, the signal amplifier 1, the temperature sensor 3 and the housing 4 are separated by the heat conduction material 5, and the PCB 2 is further provided with a pin header 6 for connecting a circuit board 7 in the measurement system.
Preferably, the housing 4 is a metal housing that is not easily deformed at different temperatures.
Preferably, the signal amplifier 1 uses an AD698 chip, which has high integration and can be used with LVDT and RVDT.
A differential transformer type measuring system mainly comprises a Micro Control Unit (MCU) and a temperature compensation module for the differential transformer type measuring system, wherein the MCU is electrically connected with a PCB (printed circuit board) 2.
The utility model discloses a use as follows: firstly, a temperature compensation module is installed on a circuit board 7 of an original measurement system through a pin header 6, then the whole measurement system is placed in an environment bin, a compensation quantity model is established, finally, in actual use, a Micro Control Unit (MCU) collects the temperature and the current displacement signal of a signal amplifier in real time, the collected data and the compensation quantity are calculated, and the compensated displacement signal is obtained and then participates in the control and display of the whole measurement system.
The process of establishing the compensation quantity model is as follows: as shown in fig. 2, the whole measurement system is placed in an environment chamber, the measurement system is simulated to work in different temperature environments through a preset temperature curve, output displacement signals are collected in real time, and compensation quantities of the measurement system at different temperatures are calculated through the change condition of the output displacement signals, so that a compensation quantity model is obtained.
Claims (4)
1. A temperature compensation module for a differential transformer type measurement system comprises a signal amplifier (1), and is characterized in that: still include casing (4), casing (4) intussuseption is filled with heat conduction material (5) the middle part of heat conduction material (5) is provided with PCB board (2), signal amplifier (1) is equipped with in PCB board (2) facing, still is provided with temperature sensor (3) on PCB board (2), and separates with heat conduction material (5) between signal amplifier (1), temperature sensor (3) and casing (4), still be provided with on PCB board (2) and be arranged needle (6) that are arranged in connecting circuit board (7) among the measurement system.
2. The temperature compensation module for a differential transformer based measurement system according to claim 1, wherein: the shell (4) is a metal shell.
3. The temperature compensation module for a differential transformer based measurement system according to claim 1, wherein: the signal amplifier (1) adopts an AD698 chip.
4. A differential transformer formula measurement system, measurement system includes little the control unit MCU, its characterized in that: temperature compensation module for a differential transformer measurement system comprising a micro control unit MCU according to any of claims 1 to 3 electrically connected to a PCB board (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020770334.8U CN211717371U (en) | 2020-05-08 | 2020-05-08 | Temperature compensation module for differential transformer type measuring system and measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020770334.8U CN211717371U (en) | 2020-05-08 | 2020-05-08 | Temperature compensation module for differential transformer type measuring system and measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211717371U true CN211717371U (en) | 2020-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020770334.8U Active CN211717371U (en) | 2020-05-08 | 2020-05-08 | Temperature compensation module for differential transformer type measuring system and measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211717371U (en) |
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2020
- 2020-05-08 CN CN202020770334.8U patent/CN211717371U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" |
Address after: 401122 building C, block a, comprehensive R & D building, No. 9, Jinyu Avenue, northern New District, Yubei District, Chongqing Patentee after: Chongqing Kairui testing equipment Co.,Ltd. Patentee after: China Automotive Engineering Research Institute Co.,Ltd. Address before: 401122 9 Jinyu Avenue, Yubei District, Chongqing Patentee before: CHONGQING CAERI AUTOMOBILE TEST EQUIPMENT DEVELOPMENT Co.,Ltd. Patentee before: China Automotive Engineering Research Institute Co.,Ltd. |
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| CP03 | "change of name, title or address" |