Apparatus and method for testing an air data system sensor

Abstract

The application belongs to the field of aviation test technology and provides a device and method for testing atmospheric data system sensors. The test device mainly comprises a test case, a power supply, a voltmeter, an ammeter, a waveband switch, an adjusting knob, a socket, a detection port, a thermometer, a working power supply and an adjustable precision power supply. The application adopts modular design and can complete electrical performance index inspection of multiple types of attack angle sensors, zero position regulators and total temperature sensors. The device has the characteristics of high test precision, wide application range, strong generalizability, good reliability and maintainability, moderate volume and weight and simple operation.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aircraft function test and detection, and particularly relates to a device and method for testing an atmospheric data system sensor. BACKGROUND

[0002] The atmospheric data system sensor test device is a special device for testing the technical performance of a zero adjuster, an angle of attack sensor, a sideslip angle sensor, an atmospheric temperature sensor, and a matching test of the angle of attack sensor / sideslip angle sensor and the zero adjuster. The test device can check the electrical performance indicators of the product. The test device has the characteristics of high test precision, good reliability and maintainability, moderate size and weight, and simple operation.

[0003] The test device in the prior art has the following problems:

[0004] 1. Only a single type of atmospheric data sensor can be tested, and the test device does not have the test capability for multiple types;

[0005] 2. The matching test of the angle of attack sensor / sideslip angle sensor and the zero adjuster cannot be performed;

[0006] 3. The meter head needs to be disassembled for metering and calibration. SUMMARY

[0007] The application aims to provide a device and method for testing an atmospheric data system sensor, which can complete the ground function performance test of multiple types of angle of attack sensors, sideslip angle sensors, zero adjusters and temperature sensors, and has a wide use space and high promotion value for testing aircraft atmospheric data sensors.

[0008] In a first aspect, the application provides a method for testing an atmospheric data system angle of attack sensor, the method comprising:

[0009] Preparation before testing;

[0010] Performance check: place the switch S1 at the "on" position, rotate the angle of attack sensor wind vane to a specified angle, rotate the S11 switch to the "1", "2", "3" and "4" positions in sequence, and record the values displayed by the voltmeter respectively. The values are the percentage measurement values of each channel of the angle of attack sensor.

[0011] Wind vane half-power heating test: connect the AC 115V heating power supply, place the switch S2 at the "on" position, and the AC 115V voltmeter displays 115V voltage. Turn the S5 switch upward and keep it still. The red heating indicator light on the upper side of the S2 switch should be on, and the AC digital ammeter indicates the wind vane half-power heating current value.

[0012] Preferably, the preparation before testing comprises:

[0013] Switch S14, S15 is placed in the "measurement" position, switch S1 is placed in "off", switch S8 is placed in "GGJ" position, switch S10 is placed in "single piece" position, switch S12 is placed in "voltage" position, switch S13 is placed in "component" position;

[0014] The end of the cable is connected to the measured product, and the other end is connected to the X4 socket of the test equipment;

[0015] Connect the atmospheric data system sensor test equipment power cable with the DC 28V power supply, and connect the angle of attack sensor gauge with the AC 220V power supply with a special cable;

[0016] Select voltage test with digital multimeter, red meter pen connects "function test terminal +", black meter pen connects "function test terminal -".

[0017] In the second aspect, the application also provides a method for testing the zero position regulator of the atmospheric data system, which comprises:

[0018] Connect one end of the test cable with the product, and connect the other end with the X3 socket of the test equipment;

[0019] Switch S1 is placed in "off", S14, S15 is placed in "measurement", S8 is placed in "GGT", S10 is placed in "single piece", S12 is placed in "voltage", S13 is switched to "component" position;

[0020] S1 is placed in "on" position, S9 switch is rotated to "1" position. Connect red test needle of digital multimeter to "aLi1H", and black test needle to "LL"; adjust coarse and fine adjustment potentiometers to make input voltage indicate 0V on the multimeter;

[0021] Select voltage test with digital multimeter, red meter pen connects "function test terminal +", black meter pen connects "function test terminal -".

[0022] Adjust the potentiometer on the product to 0°, -2°, -4°, +2°, +4° position respectively with a screwdriver, and then rotate S9 switch to "1", "2" position respectively, then the indication of digital multimeter is the output voltage of each measured channel;

[0023] According to the above method, input voltage is respectively placed at 5V and 10V, and the zero position regulator is placed at the required check point, and the voltage value displayed on the multimeter is recorded, which should meet the requirements.

[0024] In the third aspect, the application also provides a method for testing the temperature sensor of the atmospheric data system, which comprises:

[0025] Resistance test;

[0026] The test of the heating current of the total atmospheric temperature sensor: the sensor is connected with a direct current stabilized power supply by a special heating cable, the power supply is turned on to output 28V direct current, the power switch on the cable is turned on, the current indication on the stabilized power supply is the heating current consumption, which should meet the requirements.

[0027] Preferably, the resistance value test comprises:

[0028] Switch S8 to the "temperature" position;

[0029] Set S6 switch to the measured channel, switch up position 1 channel, switch down position 2 channel;

[0030] Set the working state of the digital multimeter to resistance, insert two red multimeter probes into two red "function test terminals", and insert two black multimeter probes into two black "function test terminals";

[0031] The resistance value of the channel indicated by the digital multimeter should meet the requirements.

[0032] In a fourth aspect, the application also provides a method for testing an attack angle sensor and a zero position regulator of an atmospheric data system, the method comprising:

[0033] Connect X3 to the zero position regulator cable and X4 to the attack angle sensor cable. Adjust the attack angle sensor wind vane position, select the measured channel through S9 switch, and the digital multimeter indicates the output direct current voltage amplitude of the measured channel.

[0034] Switch S14 to the "measurement" position;

[0035] Switch S13 to "component";

[0036] Switch S10 to "single piece"; adjust the zero position of each channel on the angle position gauge;

[0037] Switch S10 to "joint test";

[0038] Switch S8 to "GGT";

[0039] Connect the digital multimeter to the tester through the "function test terminals", select voltage test on the digital multimeter, connect the red multimeter probe to the "function test terminal +", and connect the black multimeter probe to the "function test terminal -";

[0040] Select the test channel through S9 switch;

[0041] Rotate the attack angle sensor to the desired angle;

[0042] Adjust the compensation potentiometer of the corresponding channel on the product, and the indication of the digital multimeter is the amplitude of the direct current output voltage of the measured channel.

[0043] In a fifth aspect, the application also provides a device for testing an atmospheric data system sensor, the device comprising:

[0044] A front panel of the cabinet is installed with a power switch S1, a power indicator, a heating power switch S2, a heating power indicator, a signal switching switch, a DC power supply voltage meter, a DC ammeter, an AC power supply voltage meter, an AC ammeter, a pointer type DC voltage meter, a digital percentage display voltage meter, a digital temperature meter, a panel instrument metering jack, a function test terminal, a sensor electrical connection signal detection hole, and a zero adjuster input test voltage adjusting knob;

[0045] A rear panel of the cabinet is installed with a power electrical connection socket, an adjustable voltage output jack, a voltage adjusting knob, an AC 115V fuse tube, a DC 28V fuse tube, a DC ammeter calibration switch, and an AC ammeter calibration switch;

[0046] The cabinet is internally installed with a working power supply and an adjustable precision power supply.

[0047] Preferably, the signal switching switch comprises S3: a base heating switch; S4: a shell heating switch; S5: a wind vane heating switch; S6: a temperature sensor selection switch; S7: a temperature sensor heating switch; S8: a function test selection switch; S9: a zero adjuster output channel selection switch; S10: a joint test / zero adjuster single test selection switch; S11: an angle of attack sensor output channel selection switch; S12: an angle of attack sensor voltage / resistance selection switch; and S13: an angle of attack sensor system / component test selection switch.

[0048] The application has the following beneficial technical effects:

[0049] 1) High degree of integration, wide application range. The test device can meet the function and performance test of multiple types of angle of attack sensors, sideslip angle sensors, zero adjusters, and temperature sensors; and can meet the matching test of angle of attack sensors / sideslip angle sensors and zero adjusters.

[0050] 2) The device adopts a modular design, and the selected modules are all general replaceable products. The structural design considers the convenience of installation and disassembly to ensure the accessibility and interchangeability of the device for maintenance. The device does not need to be overhauled under the specified use conditions, but only needs to be repaired, measured, and parameter adjusted.

[0051] 3) When designing, a compatible external measurement calibration interface is left to facilitate in-situ measurement of the instrument and convenient system testing.

[0052] 4) When designing, a signal detection port is left to facilitate maintenance and fault detection of the device.

[0053] 5) Strong multi-channel test capability and fast model switching. Attached Figure Description

[0054] Figure 1-1 This is a schematic diagram of the front panel of the test chassis provided in an embodiment of this application;

[0055] Figure 1-2 This is a schematic diagram of the rear panel of the test chassis provided in an embodiment of this application;

[0056] Figure 2 Detailed schematic diagram of the system;

[0057] Figure 3 This is a block diagram illustrating the testing principle of the zero-position regulator.

[0058] Figure 4 This is a block diagram illustrating the testing principle of angle of attack and sideslip angle sensors.

[0059] Figure 5 This is a block diagram illustrating the testing principle of the total atmospheric temperature sensor.

[0060] Figure 6 This is a block diagram illustrating the principle of the zero-position regulator and the angle of attack and sideslip angle sensor working together. Detailed Implementation

[0061] This invention belongs to the field of aviation technology (aircraft functional testing and inspection), and relates to a testing device and method for sensors of the air data system of medium-sized medium-range transport aircraft. It is applicable to the functional performance testing of zero-point regulators, angle-of-attack sensors, sideslip angle sensors and atmospheric temperature sensors in the air data system.

[0062] Please refer to Figure 1 to Figure 6 The components of the testing equipment, such as Figure 1-1 and Figure 1-2 As shown, an atmospheric data sensor testing device is provided. The testing device includes a chassis, a power supply, and an adjustable precision power supply. The chassis panel is equipped with switches, sockets, indicator lights, voltmeters, ammeters, test ports, adjustment knobs, etc. The power supply is installed inside the chassis, and all components are connected by circuitry.

[0063] The front panel of the chassis is equipped with a 28V power switch and a 28V power indicator light; a 115V heating power switch and a 115V heating power indicator light; sensor electrical connection sockets (X1~X4), signal switching switches (S3~S13), DC power supply voltmeter, DC ammeter, AC 115V power supply voltmeter, AC ammeter, pointer-type DC voltmeter, digital percentage display voltmeter, digital thermometer, panel instrument metering jacks, function test terminals, sensor electrical connection signal detection holes, and zero-point regulator input test voltage adjustment knobs (coarse and fine adjustment), etc.

[0064] The rear panel of the test case is equipped with: power supply electrical connection socket, 0-20V adjustable voltage output jack, voltage adjustment knob, AC 115V fuse, DC 28V fuse, DC 28V ammeter calibration switch and AC 115V ammeter calibration switch.

[0065] The front panel electrical components, rear panel electrical components and the working power source installed in the case are connected through the circuit to achieve the test function.

[0066] Test equipment design principle

[0067] The test equipment is connected to the product to be tested through the sensor electrical connection socket X1-X4, the DC power supply U1-U4 provides the product working voltage, and the switches S1-S15 and the internal circuit realize signal multiplexing: including the selection of the product to be tested, the channel and the test item. The signal of the product to be tested is collected and displayed directly on the voltmeter and ammeter.

[0068] The detailed working principle of the system is shown in Figure 2

[0069] Function of each component of the test equipment

[0070] The functions of each component of the system are as follows:

[0071] Front panel of the test case:

[0072] DC power supply switch S1: 28V power supply switch, controls the on / off of the external 28V power supply;

[0073] AC power supply switch S2: 115V heating power supply switch, controls the on / off of the external 115V power supply;

[0074] Signal switching switch S3: when continuously placed in the on position, 115V is supplied to the attack angle sensor base heating circuit, and the attack angle sensor base starts to heat up;

[0075] Signal switching switch S4: when continuously placed in the on position, AC 115V is supplied to the attack angle / sideslip angle sensor shell heating circuit, and the attack angle sensor shell starts to heat up;

[0076] Signal switching switch S5: when continuously placed in the on position, AC 115V is supplied to the attack angle / sideslip angle sensor spinner heating circuit, and the attack angle sensor spinner starts to heat up;

[0077] Signal switching switch S6: temperature sensor selection switch, used for test selection of two different types of temperature sensors;

[0078] Signal switching switch S7: when continuously placed in the on position, 28V is supplied to the temperature sensor heating circuit, and the temperature sensor starts to heat up; ​

[0079] Function test selection switch S8: used for selecting the test object as the angle of attack sensor / zero adjuster / temperature sensor,

[0080] S9 zero adjuster output channel selection switch: used for selecting the output measured 1~6 channels of the zero adjuster of the tested object;

[0081] S10: zero adjuster joint test / single piece test selection switch, when placed in the "joint test" position, used for the joint test of the angle of attack sensor and the zero adjuster; when placed in the "single piece" position, used for the single test of the angle of attack sensor and the zero adjuster;

[0082] S11: angle of attack / sideslip angle sensor output channel selection switch, used for selecting the output channels 1~6 of the angle of attack / sideslip angle sensor;

[0083] S12: angle of attack sensor voltage / resistance selection switch, when placed in the "voltage" position, used for the output voltage test of the angle of attack / sideslip angle sensor; when placed in the "resistance" position, used for the resistance test of the output channel of the angle of attack / sideslip angle sensor;

[0084] S13: angle of attack sensor system / component test selection switch, when placed in the "system" position, the joint test of the angle of attack / sideslip angle and the zero adjuster can be performed; when placed in the "component" position, the single test of the angle of attack / sideslip angle is performed;

[0085] DC power supply voltmeter: when S1 is placed in the on position, the 28V power supply voltage is displayed;

[0086] DC ammeter: when S1 is placed in the on position, the consumed current of the measured product is displayed;

[0087] 28V power supply indicator: when S1 is in the on position, the indicator is bright;

[0088] 115V power supply indicator: when S2 is placed in the on position, the indicator is bright;

[0089] AC 115V power supply voltmeter: when S2 is placed in the on position, the heating voltage of the angle of attack / sideslip angle sensor is displayed;

[0090] AC 115V ammeter: when S2 is placed in the on position, the heating current of the angle of attack sensor is displayed after S3 / S4 / S5 are turned on;

[0091] Pointer type DC voltmeter: used for measuring the output voltage value of the angle of attack / sideslip angle sensor;

[0092] Digital percentage display voltmeter: used for measuring the output percentage test of the angle of attack / sideslip angle sensor;

[0093] Digital temperature meter: used to measure the temperature sensed by the temperature sensor;

[0094] Sensor electrical connection socket X1: socket for testing the temperature sensor, used when testing the temperature sensor and connecting the temperature sensor;

[0095] Sensor electrical connection socket X2: external atmospheric machine signal, used for functional expansion, which is an expansion interface;

[0096] Sensor electrical connection socket X3: socket for testing the zero adjuster, used when testing the zero adjuster and connecting the zero adjuster;

[0097] Sensor electrical connection socket X4: socket for testing the angle of attack / sideslip angle sensor, used when testing the angle of attack / sideslip angle sensor and connecting the angle of attack / sideslip angle sensor.

[0098] Zero adjuster input test voltage adjustment knob (coarse and fine): used to adjust the signal size supplied to the zero adjuster when testing the zero adjuster.

[0099] Panel instrument meter measurement jack: used to test the voltage or current value of the voltmeter and ammeter on the panel;

[0100] Function test terminal: used to test the electrical zero voltage of the angle of attack / sideslip angle sensor wind vane when testing the angle of attack / sideslip angle sensor;

[0101] Sensor electrical connection signal detection hole: used to test the 10V voltage output by the angle of attack / sideslip angle sensor;

[0102] Test machine case rear panel:

[0103] Power supply electrical connection socket: used to connect the 28V and 115V power supply for product testing;

[0104] DC 28V ammeter verification switch S14: when the switch is placed in the "measurement" position, the DC 28V ammeter is connected to the test system circuit, and when the switch is placed in the "verification" position, the DC 28V ammeter is disconnected from the test system circuit;

[0105] AC 115V ammeter verification switch S15: when the switch is placed in the "measurement" position, the AC 115V ammeter is connected to the test system circuit, and when the switch is placed in the "verification" position, the AC 115V ammeter is disconnected from the test system circuit;

[0106] 0-20V adjustable voltage output jack: by rotating the 28V adjustment knob on the rear panel, a 0-20V voltage can be output for external use;

[0107] Voltage adjustment knob: adjusting this knob allows the 0-20V adjustable voltage output jack on the rear panel to output a 0-20V voltage;

[0108] AC 115V fuse (3A): 3A self-protection for AC 115V power supply;

[0109] DC 28V fuse (3A): 3A self-protection for DC 28V power supply;

[0110] Inside the case:

[0111] DC power supply U1: input DC 28V voltage, output DC 15V voltage to adjustable precision power supply U2 and 10V precision power supply U3;

[0112] Adjustable precision power supply U2: input DC 15V voltage from DC power supply U1, output adjustable 0-10V voltage to zero adjuster, precision 0.001V;

[0113] DC power supply U3: input DC 15V voltage from DC power supply U1, output DC 10V voltage to measured product angle of attack sensor;

[0114] DC power supply U4: input DC 28V voltage, output DC 5V voltage for voltmeter and ammeter working.

[0115] Among them: 28V power switch (S1), 28V power indicator, 115V heating power switch (S2), 115V heating power indicator, sensor electrical connection socket (X1, X2, X3, X4), signal switching switch (S3: base heating switch; S4: shell heating switch; S5 wind vane heating switch; S6: temperature sensor selection switch; S7: temperature sensor heating switch; S8: function test selection switch; S9 zero adjuster output channel selection switch; S10: joint test / zero adjuster single test selection switch; S11 angle of attack sensor output channel selection switch; S12: angle of attack sensor voltage / resistance selection switch; S13: angle of attack sensor system / component test selection switch), DC power supply voltmeter, DC ammeter, AC 115V power supply voltmeter, AC ammeter, pointer type DC voltmeter, digital percentage display voltmeter, digital thermometer, panel instrument metering jack, function test terminal, sensor electrical connection signal detection hole, zero adjuster input test voltage adjusting knob (coarse and fine) are installed on the front panel of the case.

[0116] The rear panel of the test case is equipped with: power electrical connection socket, 0-20V adjustable voltage output jack, voltage adjusting knob, AC 115V fuse (3A), DC 28V fuse (3A), DC 28V ammeter calibration switch and AC 115V ammeter calibration switch.

[0117] Angle of attack sensor function performance test

[0118] 1) Test preparation:

[0119] Switches S14, S15 are set to "measurement", switch S1 is set to "off", switch S8 is set to "GGJ", switch S10 is set to "single", switch S12 is set to "voltage", switch S13 is set to "component".

[0120] One end of the cable is connected to the measured product, and the other end is connected to the X4 socket of the test equipment.

[0121] Connect the atmospheric data system sensor test equipment power cable to the DC 28V power supply, and connect the angle of attack sensor gauge to the AC 220V power supply using a special cable.

[0122] Select the voltage test on the digital multimeter, and connect the red meter pen to the "function test terminal +", and the black meter pen to the "function test terminal -".

[0123] 2) Performance check

[0124] Set switch S1 to "on" and rotate the angle of attack sensor wind vane to the specified angle. Rotate switch S11 to "1", "2", "3", and "4" positions in turn, and record the values displayed on the voltmeter. This value is the percentage measurement value of each channel of the angle of attack sensor.

[0125] 3) Wind vane half-power heating test

[0126] Connect the AC 115V heating power supply, set switch S2 to "on", and the AC 115V voltmeter displays 115V voltage. Turn up switch S5 and hold it, the red heating indicator light on the upper side of switch S2 should be on, and the AC digital ammeter indicates the wind vane half-power heating current value.

[0127] Zero adjuster function performance test

[0128] Connect one end of the test cable to the product, and the other end to the X3 socket of the test equipment.

[0129] Set switch S1 to "off", S14, S15 to "measurement", S8 to "GGT", S10 to "single", S12 to "voltage", and S13 to "component" position.

[0130] Set S1 to "on" and S9 switch to "1" position. Connect the red test pin of the digital multimeter to "aLi1H" and the black test pin to "LL". Adjust the coarse and fine potentiometers to make the input voltage indicate 0V on the multimeter (DC voltage range).

[0131] Select the voltage test on the digital multimeter, and connect the red meter pen to the "function test terminal +", and the black meter pen to the "function test terminal -".

[0132] Adjust the potentiometer on the finished product to 0°, -2°, -4°, +2°, +4° position respectively with a screwing screw, and then rotate S9 switch to "1", "2" position respectively, then the indication of digital multimeter is the output voltage of each measured channel.

[0133] According to the above method, the input voltage is respectively set to 5V and 10V, and the zero adjuster is set to the required check point. The voltage value displayed on the multimeter should meet the requirements.

[0134] Temperature sensor test

[0135] 1) Resistance test

[0136] Set S8 switch to "temperature" position;

[0137] Set S6 switch to the measured channel, switch to channel 1 upwards, and switch to channel 2 downwards;

[0138] Set the working state of digital multimeter to resistance, and insert two red multimeter probes into two red "function test terminals" and two black multimeter probes into two black "function test terminals";

[0139] The indication of digital multimeter is the resistance value of the channel, which should meet the requirements.

[0140] 2) Test of heating consumption current

[0141] Test the heating current of atmospheric total temperature sensor with special heating cable. Connect the sensor with DC stabilized power supply, turn on the power supply, output 28V DC voltage, turn on the power switch on the cable, and the current indication on the stabilized power supply is the heating consumption current, which should meet the requirements.

[0142] Attack angle sensor and zero adjuster test

[0143] Connect X3 with zero adjuster cable and X4 with attack angle sensor cable. Adjust the attack angle sensor wind vane position respectively, select the measured channel through S9 switch, and the digital multimeter indicates the output DC voltage amplitude of the measured channel.

[0144] Set S14 to "measurement" position;

[0145] Switch S13 to "component";

[0146] Switch S10 to "single piece"; adjust zero for each channel on the angle position gauge (see attack angle sensor output DC voltage amplitude test)

[0147] Switch S10 to "joint test";

[0148] Switch S8 to "GGT";

[0149] Connect the digital multimeter to the tester through the "function test terminal", select the voltage test on the digital multimeter, connect the red test pen to the "function test terminal +", and connect the black test pen to the "function test terminal -";

[0150] Select the test channel through S9 switch;

[0151] Turn the attack angle sensor to the desired angle;

[0152] Adjust the compensation potentiometer of the corresponding channel on the product, and the indication of the digital multimeter is the amplitude of the direct current output voltage of the measured channel.

Claims

1. A method of testing an atmospheric data system angle of attack sensor and zero adjuster, characterized by, The method comprises: X3 connects zero adjuster cable, X4 connects angle of attack sensor cable; adjust angle of attack sensor fairing position respectively, select measured channel through S9 switch, digital multimeter indicates output DC voltage amplitude of measured channel; Put S14 to "measurement" position; Switch S13 to "component"; Switch S10 to "single piece"; Switch S10 to "joint test"; Switch S8 to "GGT"; Connect digital multimeter to tester through "function test terminal", select voltage test of digital multimeter, connect "function test terminal+" with red meter pen, connect "function test terminal-" with black meter pen; Select test channel through S9 switch; Turn angle of attack sensor to desired angle; Adjust compensation potentiometer of corresponding channel on product, then digital multimeter indicates DC output voltage amplitude of measured channel; The method of zero adjuster comprises: Connect one end of test cable with finished product, and connect the other end with test equipment X3 socket; Put switch S1 to "off", put S14 and S15 to "measurement", put S8 to "GGT", put S10 to "single piece", put S12 to "voltage", and switch S13 to "component" position; Put S1 to "on" position, rotate S9 switch to "1" position, connect "aLi1H" with red test needle of digital multimeter, and connect "LL" with black test needle; adjust coarse and fine potentiometers to make input voltage indicate 0V on digital multimeter; Select voltage test of digital multimeter, connect "function test terminal+" with red meter pen, and connect "function test terminal-" with black meter pen; Adjust potentiometers on finished product to 0°, -2°, -4°, +2° and +4° positions respectively with a screwdriver, rotate S9 switch to "1" and "2" positions in turn, then digital multimeter indicates output voltage of each measured channel; According to the above method, input voltage is respectively set to 5V and 10V, zero adjuster is set to required check point, and voltage value displayed on digital multimeter is recorded, which should meet the requirements.

2. An apparatus for testing an air data system sensor, comprising the method of testing an air data system angle of attack sensor and zero adjustor of claim 1, wherein, The device comprises: Front panel of cabinet, which is installed with power switch S1, power indicator, heating power switch S2, heating power indicator, signal switching switch, DC power voltage meter, DC current meter, AC power voltage meter, AC current meter, pointer type DC voltage meter, digital percentage display voltage meter, digital temperature meter, panel instrument metering jack, function test terminal, sensor electrical connection signal detection hole and zero adjuster input test voltage adjusting knob; Rear panel of cabinet, which is installed with power electrical connection socket, adjustable voltage output jack, voltage adjusting knob, AC 115V fuse tube, DC 28V fuse tube, DC current meter calibration switch and AC current meter calibration switch; The cabinet is internally installed with working power supply and adjustable precision power supply.

3. The apparatus of claim 2, wherein, The signal switching switch comprises S3: base heating switch; S4: shell heating switch; S5: fairing heating switch; S6: temperature sensor selection switch; and S7: temperature sensor heating switch. S8: function test selector switch; S9: zero adjuster output channel selector switch; S10: combined test / zero adjuster single test selector switch; S11: angle of attack sensor output channel selector switch; S12: angle of attack sensor voltage / resistance selector switch; S13: angle of attack sensor system / component test selector switch.

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