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CN-121977744-A - Omnidirectional automatic testing device applied to pressure sensor

CN121977744ACN 121977744 ACN121977744 ACN 121977744ACN-121977744-A

Abstract

The invention relates to the technical field of pressure sensor testing, in particular to an omnidirectional automatic testing device applied to a pressure sensor, which comprises a main frame. The omnidirectional automatic testing device applied to the pressure sensor realizes full-automatic operation of the pressure sensor test, completes automatic feeding, clamping and positioning and discharging sorting of the sensor through cooperation of a longitudinal feeding pipe, a guide control frame controlled by an electric control screw rod and a sorting discharging channel, does not need manual intervention in the whole process, greatly improves the testing efficiency, avoids errors caused by manual operation, ensures the testing consistency, has omnidirectional multidimensional pressure measuring capability, comprises a plurality of groups of annular detection heads, can perform pressure tests of different angles and different areas on the pressure sensor, meets the full-performance detection requirements of various pressure sensors, is convenient to replace and maintain, and is suitable for testing of sensors with different specifications.

Inventors

  • LUAN LIUYANG
  • ZHANG SHENGWU
  • YAO QINBIN

Assignees

  • 常州曼淇威压力控制技术有限公司

Dates

Publication Date
20260505
Application Date
20260331

Claims (9)

  1. 1. The omnidirectional automatic testing device applied to the pressure sensor comprises a main frame (1) and is characterized in that an upper hood (2) is arranged on the upper surface of the main frame (1), a rectangular transmission groove (3) is formed in the upper surface of the main frame (1), embedded transverse guide rails (4) are arranged on the front inner side surface and the rear inner side surface of the rectangular transmission groove (3), embedded vertical guide rails (5) are arranged on the left inner side surface and the right inner side surface of the rectangular transmission groove (3), a first guide control frame (6) for installing and controlling the pressure sensor module is slidably arranged in the rectangular transmission groove (3) through the embedded transverse guide rails (4), a second guide control frame (7) for installing and controlling the pressure sensor module is slidably arranged in the rectangular transmission groove (3) through the embedded vertical guide rails (5), the first guide control frame (6) and the second guide control frame (7) are initially in a crossed state of being attached to a feeding pipe blanking opening of a longitudinal feeding pipe, and the feeding pipe of the longitudinal feeding pipe is matched with a clearance of the two frames; the upper hood (2) is internally provided with an overhead pressure testing machine (8), the overhead pressure testing machine (8) is a high-precision servo press capable of realizing graded lifting and multi-angle force application, and the lifting end at the lower end of the overhead pressure testing machine is provided with a detachable omnidirectional pressure measuring module (9); The lifting end at the lower end of the overhead pressure testing machine (8) is axially fixed with a bottom extrusion seat (21), the lower surface of the bottom extrusion seat (21) is provided with a plurality of bottom installation blocks (22) protruding downwards, the detachable omnidirectional pressure measuring module (9) comprises an annular first detection head (23), an annular second detection head (24) and an annular third detection head (25) which are sleeved on the bottom installation blocks (22), the annular first detection head (23), the annular second detection head (24) and the annular third detection head (25) are of different specification structures, can be respectively of a hard flat structure, a hard irregular structure and a flexible structure, and are detachably clamped with the bottom installation blocks (22) and can be assembled singly or in a combined mode; The center of the lower surface of the bottom extrusion seat (21) is fixedly provided with an optical intelligent positioning probe (26), and a monitoring module (27) for monitoring the installation state of the detachable omnidirectional pressure measuring module (9) is installed on the side wall of the bottom installation block (22).
  2. 2. The omnidirectional automatic testing device for a pressure sensor according to claim 1, wherein a longitudinal feeding pipe (10) for longitudinally feeding a pressure sensor module is fixedly arranged in the upper hood (2), the lower end of the longitudinal feeding pipe (10) is communicated with the feeding end of a rectangular transmission groove (3), and a longitudinal blanking channel (11) and a longitudinal waste channel (12) are formed in the inner side included angle position of the rectangular transmission groove (3).
  3. 3. The omnidirectional automatic testing device for a pressure sensor according to claim 1, wherein the embedded transverse guide rail (4) is internally and movably provided with a first electric control screw rod (13) for controlling the translation of the first guide control frame (6), and the embedded vertical guide rail (5) is internally and movably provided with a second electric control screw rod (14) for controlling the translation of the second guide control frame (7).
  4. 4. The omnidirectional automatic testing device for a pressure sensor according to claim 1, wherein an environment simulation device (30) is installed in the upper hood (2), the environment simulation device (30) is a combined device of a temperature and humidity adjusting module and an electromagnetic interference simulation module, the temperature and humidity adjusting module comprises a temperature sensor, a humidity sensor, a heating unit, a refrigerating unit and a humidifying unit, the electromagnetic interference simulation module is an electromagnetic signal generator, the environment simulation device (30) is electrically connected with an external control system, and the temperature and humidity and electromagnetic environment can be adjusted through preset parameters of the control system.
  5. 5. The omnidirectional automatic testing device for a pressure sensor according to claim 4, wherein the main frame (1) is internally provided with a data acquisition and processing module, the data acquisition and processing module is electrically connected with an overhead pressure tester (8), a detachable omnidirectional pressure measuring module (9) and an environment simulation device (30), and the flows of air tightness detection, zero point and full range calibration, linearity test and the like can be realized by acquiring pressure data and sensor output data.
  6. 6. The omnidirectional automatic test equipment for pressure sensor according to claim 1, wherein the edge of the lower surface of the bottom extrusion seat (21) is provided with a shadowless lamp set (31) matched with bottom light supplementing illumination.
  7. 7. The omnidirectional automatic test device for a pressure sensor according to claim 2, wherein the first guiding control frame (6) is internally provided with a strip-shaped limiting opening (15), two ends of the strip-shaped limiting opening (15) are provided with upper end discharge openings (16), the upper surface of the second guiding control frame (7) is provided with a strip-shaped guiding groove (17), and the ends, adjacent to the longitudinal blanking channel (11) and the longitudinal waste channel (12), of the strip-shaped guiding groove (17) are provided with lower end discharge openings (18).
  8. 8. The omnidirectional automatic testing device for pressure sensor according to claim 2, wherein the side of the longitudinal blanking channel (11) and the side of the longitudinal waste channel (12) are respectively provided with a lateral guiding outlet (19), and the inner side walls of the longitudinal blanking channel (11) and the longitudinal waste channel (12) are provided with an embedded extrusion module (20) for controlling the pressure sensor to be discharged to the lateral guiding outlet (19).
  9. 9. The omnidirectional automatic test device for a pressure sensor according to claim 1, wherein the lower end of the front surface of the upper hood (2) is provided with a strip-shaped operation opening (28), and the outer side surface of the upper hood (2) is hinged with a transparent cover plate (29) at the upper end of the strip-shaped operation opening (28).

Description

Omnidirectional automatic testing device applied to pressure sensor Technical Field The invention relates to the technical field of pressure sensor testing, in particular to an omnidirectional automatic testing device applied to a pressure sensor. Background The pressure sensor is a core sensing device in the fields of industrial automation, automotive electronics, aerospace, medical equipment and intelligent equipment, can convert physical quantities such as fluid pressure, mechanical pressure and the like into electric signals for output, realizes acquisition, monitoring and closed-loop control of pressure signals, and directly determines the operation safety and control quality of the system in terms of measurement accuracy, stability and reliability. In the production and manufacturing links, the pressure sensor needs to pass through the processes of air tightness detection, zero point and full scale calibration, linearity test, hysteresis and repeatability test, temperature compensation test and the like. The main flow test mode comprises a comparison method, a step-by-step pressurizing method, a sealing leakage test, an electrical property test, a power supply, output, impedance and anti-interference capability test, wherein the comparison method is used for comparing a tested piece with a standard pressure source and correcting output, the step-by-step pressurizing method is used for applying pressure according to a measuring range and the like step by step, collecting multi-point output to fit a characteristic curve, the sealing leakage test is used for testing the sealing property of the package through a differential pressure or direct pressure mode, and the electrical property test is used for detecting the power supply, output, impedance and anti-interference capability. These tests are done in concert with a dedicated fixture, relying on a pressure console, data acquisition instrument, temperature control box. The existing testing device has the defects that the existing testing device is operated manually or semi-automatically, clamping, wiring, pressurization and data recording are dependent on manual work, the efficiency is low, the consistency is poor, the human error is large, the pressure control stability is insufficient, the pressure rising/reducing overshoot is obvious, the steady state is built slowly, the high-precision sensor calibration is difficult to meet, the environment interference compensation is lacked, the temperature drift and the electromagnetic interference are easy to introduce systematic errors, the data traceability is weak, and the automatic storage, analysis and report generation are difficult. Disclosure of Invention The invention aims to solve the technical problems that the existing testing device is mainly operated manually or semi-automatically, clamping, wiring, pressurization and data recording are dependent on manual work, the efficiency is low, the consistency is poor, the human error is large, the pressure control stability is insufficient, the pressure increasing/decreasing overshoot is obvious, the steady state is built slowly, the high-precision sensor calibration is difficult to meet, the environment interference compensation is lacked, the temperature drift and the electromagnetic interference are easy to introduce system errors, the data traceability is weak, and the automatic storage, analysis and report generation are difficult. The invention solves the technical problems by adopting the technical scheme that the omnidirectional automatic testing device applied to the pressure sensor comprises a main frame, wherein an upper hood is fixedly arranged at the top of the upper surface of the main frame, a rectangular transmission groove is formed in the upper surface of the main frame, embedded transverse guide rails are arranged on the front inner side surface and the rear inner side surface of the rectangular transmission groove, embedded vertical guide rails are arranged on the left inner side surface and the right inner side surface of the rectangular transmission groove, a first guide control frame for installing and controlling the pressure sensor module is slidably arranged in the rectangular transmission groove through the embedded transverse guide rails, a second guide control frame for installing and controlling the pressure sensor module is slidably arranged in the rectangular transmission groove through the embedded vertical guide rails, an overhead pressure tester is arranged in the upper hood, and a detachable omnidirectional pressure measuring module is arranged at the lifting end at the lower end of the overhead pressure tester. The upper hood is internally and fixedly provided with a longitudinal feeding pipe for longitudinally feeding the pressure sensor module, and a longitudinal discharging channel and a longitudinal waste channel are formed in the inner side included angle position of the rectangular transmission groove. The embedde