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CN-121995081-A - Testing device and testing method for sensor

CN121995081ACN 121995081 ACN121995081 ACN 121995081ACN-121995081-A

Abstract

The invention relates to the technical field of sensor detection, in particular to a testing device and a testing method for a sensor, comprising a bracket, wherein the top of the bracket is fixedly connected with a testing box, the left side and the right side of the testing box are respectively provided with an air knife and a rotating mechanism, the right end of the front surface of the testing box is embedded with a positioning mechanism, the positioning mechanism is used for positioning the moving rotating mechanism, the driving mechanism is arranged on the left side of the rotating mechanism, the angle adjusting mechanism is arranged on the front side of the driving mechanism, the vertical plate is arranged on the left front side of the top of the test box, the alarm lamp and the controller are respectively arranged on the upper end and the lower end of the front side of the vertical plate, and the alarm lamp is electrically connected with the controller. The method has the advantages that the wind vane sensitivity test of the angle of attack sensor is realized, the potential safety hazard of the aircraft during flight is greatly reduced, the heat preservation function is realized, the continuous test of the angle of attack sensor can be carried out, the test efficiency of the angle of attack sensor is improved, the heating uniformity of the angle of attack sensor of the aircraft is tested, and the uneven heating is prevented from reducing the wind vane sensitivity.

Inventors

  • LI XIAOWEI
  • Ge Congmei
  • XIA YANLI
  • LI XIANG

Assignees

  • 朝阳市加华电子有限公司

Dates

Publication Date
20260508
Application Date
20260310

Claims (10)

  1. 1. The utility model provides a testing arrangement for sensor, includes support (1), its characterized in that, support (1) top fixedly connected with test box (2), test box (2) openly are transparent, can observe inside test box (2), air knife (3) and rotary mechanism (4) are installed respectively to test box (2) left and right sides, test box (2) openly right-hand member is embedded to have positioning mechanism (5), fixes a position rotary mechanism (4) after moving through positioning mechanism (5), actuating mechanism (6) are installed in rotary mechanism (4) left side, angle adjustment mechanism (7) are installed in actuating mechanism (6) openly, riser (8) are installed to test box (2) top left front side, alarm lamp (9) and controller (10) are installed respectively at riser (8) front upper and lower both ends, and alarm lamp (9) are connected with controller (10) electrical behavior, fan (11) with controller (10) are installed to the upper surface mounting of test box (2), air inlet and air outlet (11) are connected to air inlet (3) and air duct (11) are provided down through suction to air knife (3) respectively; The rotary mechanism (4) comprises a corner plate (41) which is connected to the top of the right side wall of the test box (2) through a pin shaft, the corner plate (41) is in a right-angle shape, slots (42) are formed in the two ends of the front face of the corner plate (41), the positioning mechanism (5) is matched with the slots (42) to position the corner plate (41), a fan cover (43) is arranged on the right side wall of the corner plate (41), and the fan cover (43) is connected with an air inlet of the fan (11) through an air pipe.
  2. 2. The testing device for the sensor according to claim 1, wherein the positioning mechanism (5) comprises a box body (51) embedded in the right side of the front face of the testing box (2), a first guide rod (52) is vertically installed in an inner cavity of the box body (51), a spring (53) and a push plate (54) are respectively sleeved at the upper end and the lower end of the outer wall of the first guide rod (52), the push plate (54) is pushed to descend under the action of the elastic force of the spring (53), a guide groove (55) is formed in the rear side of the outer wall of the push plate (54), a plug rod (56) capable of sliding forwards and backwards is inserted in the rear side of the box body (51), the rear end of the plug rod (56) is positioned by a diagonal plate (41) in the slot (42), the rear side of the plug rod (56) is triangular, the plug rod (56) is convenient to enter the slot (42), and a guide pillar (57) inserted in the inner cavity of the guide groove (55) is installed at the front end of the plug rod (56).
  3. 3. A testing device for sensors according to claim 2, characterized in that the guide grooves (55) are distributed obliquely to the outer wall of the push plate (54).
  4. 4. A test device for a sensor according to claim 3, characterized in that the driving mechanism (6) comprises a driving box (61) arranged on the left side wall of the angle plate (41), a motor (62) electrically connected with the controller (10) is arranged on the right side of the upper surface of the driving box (61), a rotary drum (63) is arranged at the output end of the motor (62), a sliding groove (64) is arranged on the outer wall of the rotary drum (63), a second guide rod (65) is vertically arranged in the middle of the inner cavity of the driving box (61), a rack (66) capable of sliding up and down is sleeved on the outer wall of the second guide rod (65), a pin (67) inserted into the inner cavity of the sliding groove (64) is arranged on the right side wall of the rack (66), the pin (67) is in a shape, the pin (67) can slide in the sliding groove (64) smoothly under the action of a curved surface, a first rotating shaft (68) is arranged on the left side of the front surface of the driving box (61), a first straight gear (69) is arranged at the rear end of the first rotating shaft (68), and is meshed with the rack (66), a first straight gear (69) and the first straight gear (69) is driven to rotate by the first straight gear (69) when the rack (66) is lifted.
  5. 5. A testing device for sensors according to claim 4, characterized in that the chute (64) is oval distributed end to end on the outer wall of the drum (63).
  6. 6. The testing device for a sensor according to claim 5, wherein the angle adjusting mechanism (7) comprises a second rotating shaft (71) connected with the front end of the first rotating shaft (68), a second spur gear (72) and a rotating rod (73) are respectively arranged at the front end and the rear end of the outer wall of the second rotating shaft (71), the second spur gear (72) is hidden inside the rotating rod (73), a third spur gear (74) meshed with the second spur gear (72) is connected to the right side of the front face of the rotating rod (73) through a pin shaft, a fixing rod (75) is arranged at the left end of the front face of the rotating rod (73), a mounting assembly (76) is arranged at the front end of the fixing rod (75), a shaft sleeve (77) and a rotating disc (78) are respectively sleeved on the outer wall of the fixing rod (75) from front to the rear, the front face of the rotating disc (78) is connected with the rear end of the shaft sleeve (77), a connecting rod (79) is connected to the other end of the front face of the rotating rod (73) through a pin shaft, the connecting rod (79) is connected with the other end of the connecting rod (79) through a pin shaft, the connecting rod (74) is connected with the outer wall of the third spur gear (74) through a connecting rod (77), and the connecting rod (79) is connected with the outer wall (78) through a connecting rod (79) through a connecting rod through a pin shaft, the other end of the swing rod (710) is provided with a proximity switch (711) electrically connected with the controller (10).
  7. 7. A testing device for a sensor according to claim 6, characterized in that the second spur gear (72) is identical in shape to the third spur gear (74).
  8. 8. The testing device for the sensor according to claim 7, wherein the mounting assembly (76) comprises a hollow ring (761) mounted at the front end of the fixed rod (75), the inner cavity of the hollow ring (761) is mounted with the aircraft angle of attack sensor, a rotatable swivel (762) is inserted into the inner cavity of the hollow ring (761), one end of a tension spring (763) is clamped at the front of the swivel (762), the other end of the tension spring (763) is clamped with the inner wall of the hollow ring (761), the swivel (762) is pulled to rotate clockwise under the pulling force of the tension spring (763), one end of a plurality of pull rods (764) is mounted at the front of the swivel (762) at equal intervals in the circumferential direction through a pin shaft, a plurality of clamping blocks (765) are inserted into the inner wall of the hollow ring (761) at equal intervals in the circumferential direction, a stop lever (766) is mounted at the middle of the clamping blocks (765), the moving distance of the clamping blocks (765) is limited through the stop lever (766), the other end of the pull rods (763) is sleeved on the outer wall of the stop lever (766), and the temperature of the thermistor (767) is controlled to be in direct proportion to the temperature change of the temperature measurement resistor (767).
  9. 9. A testing device for a sensor according to claim 8, characterized in that the inside of the front face of the clamping block (765) is beveled.
  10. 10. A test method for a sensor, applied to a test apparatus for a sensor according to claim 9, comprising the steps of: s1, clamping an aircraft attack angle sensor on a mounting assembly (76) to enable a thermistor (767) to be in contact with the side wall of the sensor; s2, starting a fan (11), wherein the fan (11) sucks air through a rotating mechanism (4) and supplies air to an air knife (3), the air knife (3) transversely blows air to simulate an air flow environment, and meanwhile, starting a condenser (12) to control the temperature of a test box (2) to simulate the temperature and humidity environment of airplane flight; S3, starting a driving mechanism (6), driving an angle adjusting mechanism (7) to drive an attack angle sensor to swing, enabling a swing rod (710) to be always horizontal, detecting a sensor wind vane response state through a proximity switch (711), and if wind vane swing lags behind the swing rod (710), enabling a controller (10) to trigger a warning lamp (9) to give an alarm; S4, utilizing a thermistor (767) on the installation component (76) to carry out multipoint synchronous temperature measurement on the attack angle sensor, acquiring temperature measurement data through the controller (10), and detecting the heating uniformity of the sensor; S5, when the sensor to be tested is replaced, the positioning mechanism (5) is operated to release the positioning of the rotating mechanism (4), the rotating mechanism (4) enables the driving mechanism (6) and the angle adjusting mechanism (7) to move out of the test box (2), meanwhile, the rotating mechanism (4) seals the test box (2), the positioning mechanism (5) is operated reversely after the replacement of the sensor is completed, the rotating mechanism (4) is reset and repositioned, and the sensor test is continued.

Description

Testing device and testing method for sensor Technical Field The invention relates to the technical field of sensor detection, in particular to a testing device and a testing method for a sensor. Background The attack angle sensor is a core sensing component in the aircraft flight control system, accurate attack angle data is provided for aircraft attitude control and flight navigation through wind vane sensing air flow angles, the accuracy of attack angle detection is directly determined by wind vane response sensitivity, and the heating uniformity of the sensor heating system is a key for guaranteeing flexible rotation of wind vanes and avoiding detection failure caused by frosting and clamping stagnation in a low-temperature flight environment, so that the accurate test of wind vane sensitivity and heating uniformity of the attack angle sensor is an important link for avoiding aircraft flight potential safety hazards and guaranteeing aviation flight safety in the delivery detection and installation maintenance stages of the attack angle sensor. At present, in the field of aviation detection, a special testing device for an aircraft attack angle sensor still has a plurality of technical defects, and the actual detection requirement is difficult to meet, and the specific problems are as follows: 1. The dynamic test mechanism aiming at the sensitivity of the windmark of the angle of attack sensor is lacking, the existing test device cannot simulate the wind power environment in actual flight and cooperate with the angle dynamic adjustment of the sensor, and also has no real-time response feedback and abnormal alarm structure of the windmark, the response sensitivity of the windmark under different angles and stable wind power cannot be accurately detected, and partial sensors with substandard sensitivity flow into the using link, so that serious potential safety hazards are brought to the flight of an airplane; 2. the heat preservation performance of the testing device is poor, when the attack angle sensor to be tested is replaced, temperature control gas in the testing box is easy to run off rapidly, so that the temperature in the box suddenly changes, the temperature of the testing box needs to be regulated and controlled again after the testing of one sensor is completed, the continuous testing of the attack angle sensor cannot be realized, the overall testing efficiency is greatly reduced, and the detection time and cost are increased; 3. The detection means for the heating uniformity of the attack angle sensor has obvious defects, the existing detection mode mostly adopts a single-point temperature measurement mode, the multi-point synchronous temperature measurement cannot be carried out on the sensor body, the working state and the heating uniformity of the sensor heater are difficult to accurately judge, the problem of uneven heating cannot be timely found, and the local overheating or underheating of the sensor can directly cause the increase of the rotation resistance and the reduction of the sensitivity of the wind vane, so that the actual use effect of the sensor is affected; 4. The adaptability and the integration of the installation fixing structure of the attack angle sensor are poor, the traditional clamping structure is complex in operation, the temperature measuring assembly and the fixing structure are mutually independent, the sensor fixing and the temperature measuring point position arrangement are required to be independently completed in the testing process, the detection operation steps are increased, the detection efficiency is further reduced, and meanwhile, the integral temperature distribution condition of the sensor cannot be reflected in the single-point temperature measuring mode. In summary, a special testing device which can realize dynamic testing of the sensitivity of the windvane of the angle-of-attack sensor, has a heat preservation function to realize continuous testing, and can perform multipoint temperature measurement on the sensor to detect heating uniformity is needed at present, so that the problems in the prior art are solved, the testing accuracy and the testing efficiency of the angle-of-attack sensor of an airplane are improved, and aviation flight safety is guaranteed. Disclosure of Invention The invention aims to provide a testing device and a testing method for a sensor, which are used for solving the problems that the windvane sensitivity of an attack angle sensor cannot be tested, the temperature of each attack angle sensor needs to be controlled, and the attack angle sensor cannot uniformly measure the temperature in the prior art. The test device for the sensor comprises a support, wherein the top of the support is fixedly connected with a test box, the front surface of the test box is transparent, the inside of the test box can be observed, an air knife and a rotating mechanism are respectively arranged on the left side and the right side of the test