Testing equipment for inertial sensor

Abstract

The invention provides test equipment for an inertial sensor. The test equipment comprises a support frame, a rotating main body, a rotating disc, a test turntable, a clamp, an air supply pipe, a steel pipe, a supporting rod, a supporting block, a rotating joint, a rotating cylinder, an air supply cavity, a pipeline and an air supply system, the rotary joint and the rotary cylinder are arranged, and gas generated by the gas supply system sequentially passes through the pipeline, the gas supply cavity, the rotary joint, the steel pipe and the gas supply pipe and finally reaches the interior of the clamp; when the clamp rotates, that is, when the test rotary table rotates, the air supply pipe and the rotary cylinder rotate at the same time, and at the moment, the air supply cavity and the pipeline do not rotate under the action of the rotary joint; due to the fact that the gas supply pipe and the clamp rotate synchronously, the situation that the gas supply pipe is prone to being bent in the prior art is eliminated, normal transportation of gas is guaranteed, and the testing quality of products is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and in particular to a testing equipment for an inertial sensor. Background Art

[0002] Inertial sensors have been widely used in aerospace, automobile, robotics and other fields. In order to ensure the performance and accuracy of inertial sensors, they need to be rigorously tested. At present, the commonly used inertial sensor testing method is to fix the sensor on a turntable and simulate different motion states by rotating the turntable to test the performance of the sensor; when the existing test equipment tests the fixture at a certain temperature, such as in a low temperature environment, it generally uses an air pipe to provide cold air to the fixture, but as the turntable rotates, the pipe is prone to bending, which affects the transportation of cold air and thus affects the quality of the test. Summary of the invention

[0003] The purpose of the present invention is to design a test device for an inertial sensor to solve the problems raised by the background technology. To achieve the above purpose, the present invention provides the following technical solutions: including a rotating body fixed on a support frame, a test turntable fixed on a rotating disk in the rotating body, and a fixture installed inside the test turntable, an air supply pipe connected to the fixture and passing through the middle of the rotating disk, a steel pipe connected to the air supply pipe, a support block fixed to the fixed end of the rotating body through a support rod, and a rotary joint installed on the support block and having an air outlet connected to the steel pipe, the end of the rotary joint located at the air outlet is connected to a rotating cylinder fixed to the test turntable, the steel pipe is located inside the rotating cylinder, the air supply pipe passes through the rotating cylinder and is connected to the steel pipe, the air inlet of the rotary joint is connected to the air supply cavity, and the air supply cavity is connected to the air supply system through a pipeline.

[0004] Furthermore, a drying air cavity connected to a drying air source is provided at one end of the support block away from the steel pipe, a bracket is fixedly connected to the side wall of the drying air cavity, the side wall of the air supply cavity is fixedly connected to the bracket, an air intake column is fixedly connected to the interior of the bracket, one end of the air intake column sequentially passes through the air supply chamber and the rotating joint and is inserted into the interior of the rotating cylinder, an air passage connecting the drying air cavity and the rotating cylinder is provided inside the air intake column, and an end of the rotating cylinder away from the drying air cavity is connected to the interior of the clamp through a drying air pipe.

[0005] Furthermore, a first wiring harness connected to the test turntable passes through a rotating disk in the rotating body, and a plurality of cross bars are fixedly connected to the rotating disk at one end facing away from the test turntable, and the plurality of cross bars pass through a wire take-up disk, and the wire take-up disk is fixedly connected to the cross bars. The first wiring harness passes through the rotating disk and is wound on the wire take-up disk. The end of the first wiring harness facing away from the wire take-up disk is clamped by a first wire clamp, and the first wire clamp is fixedly connected to the support frame. The length of the first wiring harness between the first wire clamp and the wire take-up disk is the rotation allowance of the first wiring harness.

[0006] Furthermore, the first wire harness between the first wire clamp and the wire take-up drum is U-shaped, and a limiting roller is provided on the outer side of the vertical line in the U-shaped first wire harness.

[0007] Furthermore, a limit block for preventing the first wire harness on the take-up reel from moving is fixedly connected to the rotating disk at one end away from the test turntable.

[0008] Furthermore, the limiting block is provided with a second notch, and the two end plates of the take-up reel are located in the second notch.

[0009] Furthermore, a second wire clamp for clamping the first wire harness is fixedly connected to the rotating disk at one end away from the test turntable, and the first wire harness passes through the second wire clamp, the wire take-up disk and the first wire clamp in sequence.

[0010] Furthermore, a second wiring harness connected to the test turntable passes through a rotating disk in the rotating body, and after passing through the rotating disk, the second wiring harness is clamped by a third wire clamp fixed to the cross bar. A protective cover is fixed to the support frame, and a through hole is provided at the bottom of the protective cover for the first wiring harness and the second wiring harness to move. The second wiring harness passing through the third wire clamp is coiled on the outer shell of the protective cover from an end facing away from the third wire clamp after passing through the through hole and drooping.

[0011] Furthermore, a fourth wire clamp for clamping the second wire harness is fixedly connected to the housing.

[0012] Furthermore, the first wiring harness is a wire harness, and the second wiring harness is a flat cable.

[0013] Furthermore, the shield is provided with two rotating rollers, and the second wire harness is located between the two rotating rollers.

[0014] Furthermore, a limit block is fixedly connected to the take-up disk, and the limit block is provided with a through slot. The second wire harness passing through the rotating disk passes through the through slot, the third wire clamp, between the two rotating rollers, the through hole and the fourth wire clamp in sequence.

[0015] Furthermore, a rotating ring plate is rotatably connected to the support block, and an end of the rotating ring plate is fixedly connected to the cross bar.

[0016] Furthermore, it also includes a limiting structure, which includes a first sprocket fixedly connected to the rotating disk, two second sprockets adjustably installed on the top of the support frame, a detection frame fixedly connected to the top of the support frame and located between the two second sprockets, and a chain meshed with the first sprocket and the two second sprockets, the chain located between the two first sprockets passes through the detection frame, a positioning block is fixedly connected to the chain, and first position sensors for identifying the positioning blocks are provided at both ends of the detection frame.

[0017] Furthermore, the first position sensor is a photoelectric sensor, and the positioning block is a light shielding plate capable of shielding the light path of the photoelectric sensor.

[0018] Furthermore, the detection frame includes a support block fixedly connected to the support frame and a detection block fixedly connected to the support block, and the detection block is fixedly connected to the first position sensor along both ends of the chain through a connecting plate.

[0019] Furthermore, a bottom plate is fixedly connected to the support block, and the chain is located between the bottom plate and the detection block.

[0020] Furthermore, third notches for limiting the movement of the positioning block are provided at both ends of the detection block, and the initial position of the positioning block is located inside one of the third notches, and at this time the positioning block is in contact with the end of the third notch.

[0021] Furthermore, the positioning blocks are provided with two pieces, and are respectively fixed to two sides of the chain.

[0022] Furthermore, the two first sprockets are located at the same height, and when the positioning block moves from one first position sensor to another first position sensor, the rotating disk rotates 450°.

[0023] Furthermore, the top of the support frame is adjustably connected to a vertical plate, the first sprocket is rotatably connected to the vertical plate, the vertical plate is adjustably connected to a horizontal plate, and the horizontal plate is rotatably connected to a tensioning sprocket engaged with the chain.

[0024] Furthermore, the vertical plate is provided with a plurality of threaded holes, the horizontal plate is provided with a plurality of notches respectively aligned with the threaded holes, and the bolts pass through the notches and are threadedly connected with the threaded holes.

[0025] Furthermore, the fixture includes a base plate, an outer cover, a pressing mechanism, a clamping mechanism, a temperature control component and a testing component. The pressing mechanism is installed at the lower end of the base plate, and the output end of the pressing mechanism passes upward through the base plate and is connected to the outer cover. The outer cover can form a cavity with the base plate. The testing component and the clamping mechanism are respectively installed at the upper end of the base plate, and the temperature control component is installed at the upper end of the testing component. The output end of the clamping mechanism is provided with a toggle plate, and the output end of the toggle plate is an elastic structure. The temperature control component is provided with a first notch, and the elastic structure can extend above the first notch.

[0026] Furthermore, a guide column is provided on the bottom plate, a guide hole is provided at the lower end of the outer cover, and the guide column is slidably connected to the guide hole.

[0027] Furthermore, a limiting plate is provided at the upper end of the temperature control component, and a limiting groove is provided in the limiting plate which passes through from top to bottom. The limiting groove corresponds to the position of the first notch, and the elastic structure is located between the limiting groove and the first notch.

[0028] Furthermore, a dew point monitoring component is provided on the bottom plate, and a monitoring end of the dew point monitoring component is located in the cavity.

[0029] Furthermore, a dry gas diffuser is provided on the bottom plate, and the dry gas diffuser is located in the cavity.

[0030] Furthermore, the temperature control assembly includes a heating plate and a heat exchange plate, the heating plate is installed on the upper end of the test assembly, the heat exchange plate is installed on the upper end of the heating plate, and the limit plate is installed on the upper end of the heat exchange plate. A gas flow channel is provided inside the heat exchange plate, the inlet of the gas flow channel is located on the bottom plate, and the outlet is located in the cavity.

[0031] Furthermore, it also includes a temperature sensor, which is installed on the heat exchange plate.

[0032] Furthermore, the pressing mechanism includes a motor, a screw and a pressing frame, the motor is installed on the base plate, the screw is rotatably connected to the base plate, the motor and the screw are connected through gears and chains, the screw is connected to the pressing frame, and the outer cover is installed on the pressing frame.

[0033] Furthermore, a pressing head is provided at the lower end of the pressing frame.

[0034] Furthermore, a second position sensor is provided on the bottom plate, and the second position sensor is located on the side of the pressing frame.

[0035] Furthermore, the test turntable includes a rotating frame, and rotating parts are fixedly connected to both side ends of the fixture, the rotating parts are fixedly connected to the inside of the rotating frame, the fixture is located inside the rotating frame, and the rotating frame is fixedly connected to the rotating disk on one side close to the rotating body, and the central axis of the rotating part is perpendicular to the axis of the rotating disk.

[0036] Furthermore, a limiting cylinder is provided on the support frame, and a positioning hole is provided at the bottom of the rotating frame. The telescopic rod of the limiting cylinder is inserted into the interior of the positioning hole when extended.

[0037] Furthermore, two limit cylinders are symmetrically provided.

[0038] Compared with the prior art, the present invention has the following beneficial effects: the present invention is provided with a rotating joint and a rotating cylinder, and the gas generated by the gas supply system will pass through the pipeline, the gas supply cavity, the rotating joint, the steel pipe and the gas supply pipe in sequence, and finally reach the inside of the fixture; when the fixture rotates, that is, when the test turntable rotates, the gas supply pipe and the rotating cylinder will rotate at the same time. At this time, under the action of the rotating joint, the gas supply cavity and the pipeline do not rotate; since the gas supply pipe rotates synchronously with the fixture, the problem of the gas supply pipe being easily bent in the past is eliminated, thereby ensuring the normal transportation of gas and ensuring the test quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0041] Figure 2 It is a partial cross-sectional enlarged schematic diagram of the present invention;

[0042] Figure 3 It is a schematic diagram of the overall structure of the limiting structure in the present invention;

[0043] Figure 4 It is a partial enlarged schematic diagram of the limiting structure;

[0044] Figure 5 is a schematic diagram of the structure of the fixture from a top view angle;

[0045] Figure 6 is a schematic diagram of the structure of the fixture from an upward viewing angle;

[0046] Figure 7 is a schematic diagram of a top view of the pressing mechanism in the fixture;

[0047] Figure 8 A schematic diagram of the pressing mechanism in the fixture from an upward angle;

[0048] Fig. 9 for Figure 8 The enlarged view of point A in the middle;

[0049] Fig.10 It is a schematic diagram of the structure of the outer cover in the fixture;

[0050] Fig.11 It is a schematic diagram of the assembly of the test component and the clamping mechanism in the fixture;

[0051] Fig.12 for Fig.11 The enlarged view of point B in the middle;

[0052] Fig.13 It is a structural schematic diagram of the toggle plate in the fixture;

[0053] Fig.14 for Fig.13 Enlarged view of point C in the middle.

[0054] Among them: 1. bottom plate; 101. guide column; 2. outer cover; 201. guide hole; 3. motor; 4. gear; 5. chain; 6. screw rod; 7. pressure frame; 8. pressure head; 9. test assembly; 901. first notch; 10. heating plate; 11. heat exchange plate; 1101. gas flow channel; 12. limit plate; 1201. limit groove; 13. clamping mechanism; 14. toggle plate; 15. elastic structure; 16. chip; 17. dew point monitoring assembly; 18. dry gas diffuser;

[0055] 1001, detection frame; 1002, support frame; 1003, chain; 1004, rotating disk; 1005, first sprocket; 1006, second sprocket; 1007, first position sensor; 1008, detection block; 1009, positioning block; 1010, tensioning sprocket; 1011, vertical plate; 1012, notch; 1013, horizontal plate; 1014, bottom plate; 1015, third notch;

[0056] 2001, protective cover; 2002, test turntable; 2003, cross bar; 2004, second wiring harness; 2005, rotating rod; 2006, limiting roller; 2007, limiting block; 2008, first wiring harness; 2009, take-up reel; 2010, rotating body; 2011, air supply system; 2012, drying air cavity; 2013, air intake column; 2014, bracket; 2015, air supply cavity; 2016, rotary joint; 2017, support block; 2018, rotating cylinder; 2019, support rod; 2020, clamp. DETAILED DESCRIPTION

[0057] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0058] Example: Please refer to Figure 1-2A test device for an inertial sensor comprises a rotating body 2010 fixedly connected to a support frame 1002, a test turntable 2002 fixedly connected to a rotating disk 1004 in the rotating body 2010, a fixture 2020 installed inside the test turntable 2002, an air supply pipe connected to the fixture 2020 and passing through the middle of the rotating disk 1004, a steel pipe connected to the air supply pipe, a support block 2017 fixedly connected to the fixed end of the rotating body 2010 through a support rod 2019, and a rotary joint 2016 installed on the support block 2017 and having an air outlet connected to the steel pipe, the end of the rotary joint 2016 located at the air outlet is connected to a rotating cylinder 2018 fixedly connected to the test turntable 2002, the steel pipe is located inside the rotating cylinder 2018, and the air supply pipe is connected to the rotating cylinder 2018. The air pipe runs through the rotating cylinder 2018 and is connected with the steel pipe, the air inlet of the rotating joint 2016 is connected with the air supply cavity 2015, and the air supply cavity 2015 is connected with the air supply system 2011 through a pipeline; wherein, the air supply system 2011 may adopt a refrigeration unit, and the cold air generated by the refrigeration unit will pass through the pipeline, the air supply cavity 2015, the rotating joint 2016, the steel pipe and the air supply pipe in sequence, and finally reach the inside of the clamp 2020; when the clamp 2020 rotates, the air supply pipe and the rotating cylinder 2018 will rotate at the same time, at this time, under the action of the rotating joint 2016, the air supply cavity 2015 and the pipe will not rotate; since the air supply pipe rotates synchronously with the clamp 2020, the situation that the air supply pipe is prone to bending in the past is eliminated, thereby ensuring the normal transportation of cold air and ensuring The test quality of the product is proved, and a protective cover is provided on the support block 2017; the rotary joint 2016 adopts the common circulating gas rotary joint 2016 and can be adaptively modified, such as keeping the rotating structure of the rotary joint 2016 unchanged, one end is connected to the air supply cavity 2015, and the other end is fixedly connected to the plug, the middle part of the plug is fixedly connected to the rotating cylinder 2018, and a through hole is provided in the plug, and the through hole is connected to the steel pipe, so that the gas flows into the steel pipe through the through hole after coming out of the rotary joint 2016, thereby preventing the cold air from running into the rotating cylinder 2018, and the rotary joint 2016 and the support block 2017 can be connected in a manner that the end of the rotary joint 2016 away from the rotating cylinder 2018 is fixedly connected to the support block 2017, and the rotary joint 2016 in the rotary joint 2016 The structure is located between the support block 2017 and the support frame 1002, so as to ensure the stable rotation of the rotating cylinder 2018; and the end of the support block 2017 away from the steel pipe is provided with a dry air cavity 2012 connected with the dry air source, the side wall of the dry air cavity 2012 is fixedly connected with a bracket 2014, the side wall of the air supply cavity 2015 is fixedly connected to the bracket 2014, and the inside of the bracket 2014 is fixedly connected with an air intake column 2013, one end of the air intake column 2013 passes through the air supply chamber and the rotary joint 2016 in sequence and is inserted into the inside of the rotating cylinder 2018, and the inside of the air intake column 2013 is provided with an air passage connecting the dry air cavity 2012 and the rotating cylinder 2018, and the end of the rotating cylinder 2018 away from the dry air cavity 2012 is connected to the inside of the clamp 220 through a dry air pipe;The dry gas source adopts a common dry gas supply system, which will not be elaborated here. The dry gas will flow into the fixture 2020 through the dry gas cavity 2012, the air channel inside the air inlet column 2013, the rotating cylinder 2018, and the dry gas pipe in sequence, wherein the cold air enters the gas flow channel 1101 of the plate in the fixture 2020, and the product to be tested is located inside the dry chamber and is installed on the plate where the gas flow channel 1101 is located (the plate exchanges heat with the inside of the dry chamber, thereby reducing the temperature inside the dry chamber, and thus making the product to be tested be at a lower temperature for extreme testing), and the dry gas flows into the dry chamber, and the gas flow channel 1101 is located inside the dry chamber, so that the product to be tested is in a dry environment, preventing frost inside the dry chamber, thereby affecting the stable rotation of the test turntable 2002 and affecting the inspection of the product to be tested. Measure quality; In addition, the test turntable 2002 includes a rotating frame, and the two side ends of the fixture 2020 are fixedly connected with rotating parts, which are fixedly connected to the inside of the rotating frame. The fixture 2020 is located inside the rotating frame, and the side of the rotating frame close to the rotating body 2010 is fixedly connected to the rotating disk 1004. The central axis of the rotating part is perpendicular to the axis of the rotating disk 1004. The rotating part and the rotating body 2010 both use DD motors to realize the rotation of the fixture 2020 in three-axis directions, thereby ensuring the test quality of the product; a limit cylinder is provided on the support frame 1002, and a positioning hole is provided at the bottom of the rotating frame. When the telescopic rod of the limit cylinder is extended, it is inserted into the inside of the positioning hole. Two limit cylinders are symmetrically provided, which is conducive to the positioning of the rotating frame and prevents the rotating frame from rotating when the product is placed on the fixture 2020. ;

[0059] Please refer to Figure 1-2In this embodiment, the first wire harness 2008 connected to the test turntable 2002 passes through the rotating disk 1004 in the rotating body 2010, and a plurality of cross bars 2003 are fixedly connected to the rotating disk 1004 at one end away from the test turntable 2002. The plurality of cross bars 2003 pass through the take-up disk 2009, and the take-up disk 2009 is fixedly connected to the cross bars 2003. The first wire harness 2008 passes through the rotating disk 1004 and is wound on the take-up disk 2009. The end of the first wire harness 2008 away from the take-up disk 2009 is clamped by a first wire clamp, and the first wire clamp is fixedly connected to the support frame 1002. The length of the first wire harness 2008 between the first wire clamp and the take-up disk 2009 is the length of the first wire harness 2008. The rotation margin of the first wire harness 2008 is reduced; wherein the rotating body 2010 is a DD motor, and a through hole is provided in the middle of the DD motor for the first wire harness 2008 to pass through; therefore, when the DD motor is started, the rotating disk 1004 rotates, thereby rotating the test turntable 2002, thereby rotating the first wire harness 2008, and then rotating the take-up reel 2009, and when the take-up reel 2009 rotates, the first wire harness 2008 will be wound on the take-up reel 2009, and the rotation margin is reduced at this time. When the DD motor is reversed, the take-up reel 2009 will reverse, and at this time the first wire harness 2008 wound on the take-up reel 2009 will be separated one by one, and the rotation margin is increased at this time, so the test When the turntable 2002 rotates, the wire harness will be wound and detached on the take-up drum 2009, thereby preventing the problems of disorderly wiring, easy crossing and damage of lines, and signal interference; the first wire harness 2008 between the first wire clamp and the take-up drum 2009 is U-shaped, and a limiting roller 2006 is provided on the outer side of the vertical line in the U-shaped first wire harness 2008, thereby ensuring sufficient rotation margin while preventing the first wire harness 2008 from being excessively deflected after being detached from the take-up drum 2009, which is not conducive to the stable winding of the first wire harness 2008; in addition, a device for preventing the first wire harness 2008 from being located on the take-up drum 2009 is fixedly connected to the rotating disk 1004 at the end away from the test turntable 2002 The limiting block 2007 prevents the first wire harness 2008 from moving, and the limiting block 2007 is provided with a second notch, and the two end plates of the take-up reel 2009 are located in the second notch, so as to accurately ensure that the first wire harness 2008 can be wound on the take-up reel 2009; the second wire clamp for clamping the first wire harness 2008 is fixedly connected to the rotating disk 1004 at one end away from the test turntable 2002, and the first wire harness 2008 passes through the second wire clamp, the take-up reel 2009 and the first wire clamp in sequence, ensuring that the anti-interlacing part of the first wire harness is between the first wire clamp and the second wire clamp, and the wire harness outside the first wire clamp and the second wire clamp is a fixed end, ensuring the stable transmission of the first wire harness 2008;In addition, the second wire harness 2004 connected to the test turntable 2002 passes through the rotating disk 1004 in the rotating body 2010, and the second wire harness 2004 passes through the rotating disk 1004 and is clamped by the third wire clamp fixed to the cross bar 2003. The support frame 1002 is fixed with a shield 2001, and the bottom of the shield 2001 is provided with a through hole for the first wire harness and the second wire harness 2004 to move. The second wire harness passing through the third wire clamp passes through the through hole and hangs down. The end of the third wire clamp facing away from it is coiled on the outer shell of the shield 2001, and the outer shell is fixed with a fourth wire clamp for clamping the second wire harness 2004. The principle is the same as the anti-interlacing of the first wire harness 2008. The difference is that the first wire harness 2008 is a wire harness, and the second wire harness 2004 is a cable. The wire harness is mostly used for power supply, and the cable is mostly used for data transmission. Therefore, the present invention can realize the anti-interlacing of different types of wire harnesses during the rotation process. The bottom of the shield 2001 is provided with two rotating Roller, the second wire harness 2004 is located between the two rotating rollers, ensuring the stability of the movement of the second wire harness 2004; and the limit block 2007 is fixed on the take-up disk 2009, and the limit block 2007 is provided with a through slot. The second wire harness 2004 passing through the rotating disk 1004 passes through the through slot, the third wire clamp, between the two rotating rods 2005, the through hole and the fourth wire clamp in sequence, ensuring that the anti-interlacing part of the second wire harness is between the third wire clamp and the fourth wire clamp, and the wire harness outside the third wire clamp and the fourth wire clamp is a fixed end, ensuring the stability of the signal transmission of the second wire harness 2004; in addition, the four wire clamps can be realized in the form of clamping the wire harness with two clamps with grooves, which will not be described in detail here; and the support block 2017 is rotatably connected with a rotating ring plate, the end of the rotating ring plate is fixedly connected to the cross bar 2003, and the rotation connection method can be a bearing connection, thereby ensuring the stability of the cross bar 2003 supporting the take-up disk 2009. ;

[0060] Please refer to Figure 3-4The present invention also includes a limiting structure, which includes a first sprocket 1005 fixedly connected to the rotating disk 1004, two second sprockets 1006 adjustably mounted on the top of the support frame 1002, a detection frame 1001 fixedly connected to the top of the support frame 1002 and located between the two second sprockets 1006, and a chain 10035 meshed with the first sprocket 1005 and the two second sprockets 1006, the chain 10035 located between the two first sprockets 1005 passes through the detection frame 1001, a positioning block 1009 is fixedly connected to the chain 10035, and first position sensors 1007 for identifying the positioning block 1009 are provided at both ends of the detection frame 1001; wherein the first position sensor 1007 is a photoelectric The positioning block 1009 is a shading plate that can block the optical path of the photoelectric sensor, wherein the rotating body can be a DD motor. When the rotating body starts to rotate, it will drive the chain 1003 to rotate, thereby converting the circular motion of the rotating body into a linear motion of the chain 1003 (the straight part of the chain 1003) that is easy to identify, and a photoelectric sensor is used. When the shading strip on the chain 1003 passes through the detection area of ​​the photoelectric sensor during rotation, the photoelectric sensor will generate a corresponding electrical signal and transmit it to the control unit, thereby realizing the identification of the rotation angle of the rotating body; when the positioning block 1009 moves from one first position sensor 1007 to another first position sensor 1007, the rotating disk 1004 Rotate 450°, thereby eliminating the arrangement limitations of the blocks and limit components, and meeting the continuous limit requirements exceeding 360°; in addition, after receiving the sensor signal, the control unit will make a judgment based on the preset limit angle value, rotation direction and other parameters. If the rotating body is about to exceed the preset limit range (-90° to 360°), the control unit will issue a control instruction to stop the continued rotation of the rotating body through the driving mechanism (such as a motor and its driver) connected to the rotating body, thereby achieving precise limit; the two first sprockets 1005 are located at the same height, which is convenient for adjusting the position relationship between the circular motion and the linear motion; the detection frame 1001 includes a support frame fixedly connected to the support frame 1002 The detection block 1008 is fixedly connected to the support block, and the detection block 1008 is fixedly connected to the first position sensor 1007 along the two ends of the chain 1003 through the connecting plate, so as to realize the installation of the first position sensor 1007; the support block is fixedly connected to the bottom plate 1014, and the chain 1003 is located between the bottom plate 1014 and the detection block 1008 to prevent the straight chain 1003 from bending; and the two ends of the detection block 1008 are provided with a third notch 1015 for limiting the movement of the positioning block 1009, and the initial position of the positioning block 1009 is located inside one of the third notches 1015, and at this time, the positioning block 1009 is in contact with the end of the third notch 1015, so as to limit the continued movement of the positioning block 1009;There are two positioning blocks 1009, which are respectively fixed to the two sides of the chain 1003, ensuring the stability of the force on the chain 1003 when it is in contact with the third notch 1015, and preventing the chain 1003 from falling off the second sprocket 1006; the top of the support frame 1002 is adjustably connected to the vertical plate 1011, the first sprocket 1005 is rotatably connected to the vertical plate 1011, the vertical plate 1011 is adjustably connected to the horizontal plate 1013, and the horizontal plate 1013 is rotatably connected to the tensioning sprocket 1010 meshing with the chain 1003, thereby ensuring that the chain 1003 is in a tensioned state. Prevent chain from falling off; the vertical plate 1011 is provided with a plurality of threaded holes, and the horizontal plate 1013 is provided with a plurality of notches 1012 respectively aligned with the threaded holes, and the bolts pass through the notches 1012 and are threadedly connected with the threaded holes, thereby realizing the adjustable installation of the horizontal plate 1013, and ensuring the tensioning quality of the chain 1003; in addition, the adjustable connection between the support frame 1002 and the vertical plate 1011 can also adopt this form, thereby realizing the adjustment of the distance between the second sprocket 1006; the above-mentioned rotation connection methods can all be realized in the form of connecting the rotating shaft with the bearing, and no further elaboration is made here. ;

[0061] Please refer to Figure 5-14The fixture includes a base plate 1, an outer cover 2, a pressing mechanism, a clamping mechanism 13, a temperature control component and a test component 9. The pressing mechanism is installed at the lower end of the base plate 1. The output end of the pressing mechanism passes through the base plate 1 upward and is connected to the outer cover 2. The outer cover 2 can move downward under the drive of the pressing mechanism and form a cavity with the base plate 1; the test component 9 and the clamping mechanism 13 are respectively installed at the upper end of the base plate 1. The test component 9 is used to test the chip 16. The temperature control component is installed at the upper end of the test component 9. The temperature control component is used to provide a high and low temperature environment for the chip 16; the output end of the clamping mechanism 13 A toggle plate 14 is provided at the output end, and the output end of the toggle plate 14 is an elastic structure 15. A first notch 901 is provided on the temperature control component for the chip 16 to be placed therein. Driven by the clamping mechanism 13, the toggle plate 14 drives the elastic structure 15 to extend above the first notch 901 and hold the chip 16 to ensure that the pins of the chip 16 are connected to the probes of the test component 9, thereby smoothly realizing the test of the chip 16; the elastic structure 15 is in a bow shape and is made of an insulating material with a certain deformation ability. It can be used repeatedly without causing a short circuit in the chip 16. The test assembly 9 includes an MCU board for IO signal transfer processing and a connector for signal transfer, both of which are located in the cavity on the bottom plate 1; in this embodiment, a limit plate 12 is provided at the upper end of the temperature control assembly, and a limit groove 1201 is provided in the limit plate 12, which runs through the upper and lower parts, and the limit groove 1201 corresponds to the position of the first notch 901, and the elastic structure 15 is located between the limit groove 1201 and the first notch 901; the limit groove 1201 provides positioning for the chip 16, and after the chip 16 is placed, the elastic structure 15 pushes the chip 16 from the side into the limit groove 1201 to ensure that the pins of the chip 16 are aligned with the probe of the test assembly 9. A dew point monitoring assembly 17 is provided on the bottom plate 1, and the monitoring end of the dew point monitoring assembly 17 is located in the cavity, and is used to monitor the dew point in the cavity. A dry gas diffuser 18 connected to a dry gas pipe is provided on the bottom plate 1, and the dry gas diffuser 18 is located in the cavity; the dry gas diffuser 18 is filled with dry gas, and is released into the cavity (i.e., the drying cavity) when the chip 16 is tested at a low temperature, so as to prevent frost inside the cavity; the temperature control component includes a heating plate 10 and a heat exchange plate 11, the heating plate 10 is installed on the upper end of the test component 9, the heat exchange plate 11 is installed on the upper end of the heating plate 10, and the limit plate 12 is installed on the upper end of the heat exchange plate 11, and a gas flow channel 1101 is provided inside the heat exchange plate 11, the inlet of the gas flow channel 1101 is located on the bottom plate 1, and the outlet is located in the cavity; the heating plate 10 provides heat to the heat exchange plate 11 and the cavity, so as to provide a high temperature environment for the chip 16 test; the cold air is passed into the gas flow channel 1101, and heat is exchanged with the cavity through the heat exchange plate 11, so as to provide a low temperature environment for the chip 16 test; through the above means, a test environment of -55°C to 150°C can be provided for the chip 16.The temperature control component also includes a temperature sensor, which is installed on the heat exchange plate 11. The temperature sensor can be electrically connected to the test component 9 or an external controller to perform temperature control by automated means; the pressing mechanism includes a motor 3, a screw 6 and a pressing frame 7. The motor 3 is installed on the bottom plate 1, and the screw 6 is rotatably connected to the bottom plate 1. The motor 3 and the screw 6 are connected by gears 4 and chains 5, and the screw 6 is connected by gears 4 and chains 5. The outer cover 2 is installed on the pressing frame 7; driven by the motor 3, the gears 4 and chains 5 drive multiple screws 6 on the bottom plate 1 to rotate synchronously, so that the pressing frame 7 can press or release the chip 16, and at the same time, the outer cover 2 can be opened and closed. A pressing head 8 is provided at the lower end of the pressing frame 7, and the two sides of the pressing head 8 protrude downward, which can press the two ends of the chip 16, so that the connection between the pins of the chip 16 and the probe is more stable, ensuring the normal progress of the test. A guide post 101 is provided on the bottom plate 1, and a guide hole 201 is provided at the lower end of the outer cover 2. The guide post 101 is slidably connected with the guide hole 201 to provide guidance for the opening and closing of the pressing frame 7. A second position sensor is provided on the bottom plate 1. The second position sensor is located on the side of the pressing frame 7 and is used to monitor whether the pressing frame 7 is in place. In the automated production line, multiple groups of chips 16 are transported side by side. The robot takes and places multiple chips 16 in a matrix shape into the limiting groove 1201 of the fixture, and then pushes them out by the cylinder of the clamping mechanism 13. The linkage mechanism drives the toggle plate 14 to operate, so that the elastic structure 15 presses against the chip 16 from the side and presses the chip 16 against the side of the limiting groove 1201. Then, the pressing mechanism drives the outer cover 2 to move downward and form a cavity. At the same time, the chip 16 is pressed by the pressing head 8. At this time, the pins of the chip 16 are connected to the probes at the upper end of the test component 9, and the test component 9 obtains the initial test data of the chip 16. The temperature control component makes the inside of the cavity When certain temperature conditions are reached, the output data of the test chip 16 under high and low temperature changes and extreme temperatures is collected to determine whether the chip 16 is qualified; through the chip 16 test fixture, the chip 16 can be quickly clamped, loosened and replaced, shortening the installation time of the chip 16, and greatly improving the test efficiency during large-scale chip 16 production testing; at the same time, the limit groove 1201 and the elastic structure 15 can adapt to chips 16 of different sizes and different packaging forms, thereby improving the compatibility of the fixture with diversified chip 16 testing scenarios; in addition, the elastic structure 15 and the pressure head 8 ensure that the chip 16 is clamped and pressed stably, thereby ensuring reliable electrical connection, and then ensuring the accuracy of the test results, further improving the reliability of the fixture 2020.

[0062] The working principle of this embodiment is as follows: the cold air generated by the refrigeration unit will pass through the pipeline, the air inlet cavity, the rotary joint 2016, the rotating cylinder 2018 and the air supply pipe in sequence, and finally reach the inside of the fixture 2020; when the fixture 2020 rotates, the air supply pipe and the rotating cylinder 2018 will rotate at the same time. At this time, under the action of the rotary joint 2016, the air inlet cavity and the pipeline will not rotate; since the air supply pipe and the fixture 2020 rotate synchronously, the situation in which the air supply pipe is prone to bending in the past is eliminated, thereby ensuring the normal transportation of cold air and the testing quality of the product.

[0063] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0064] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A test device for an inertial sensor, characterized in that: The invention comprises a rotating body (2010) fixedly connected to a support frame (1002), a test turntable (2002) fixedly connected to a rotating disk (1004) in the rotating body (2010), a fixture (2020) installed inside the test turntable (2002), an air supply pipe connected to the fixture (2020) and passing through the middle of the rotating disk (1004), a steel pipe connected to the air supply pipe, a support block (217) fixedly connected to the fixed end of the rotating body (2010) through a support rod (219), and a steel pipe installed on the support rod (219). A rotary joint (2016) is disposed on the support block (2017) and the air outlet of the rotary joint (2016) is connected to the steel pipe. The end of the rotary joint (2016) located at the air outlet is connected to a rotary cylinder (2018) fixedly connected to the test turntable (2002). The steel pipe is located inside the rotary cylinder (2018). The air supply pipe passes through the rotary cylinder (2018) and is connected to the steel pipe. The air inlet of the rotary joint (2016) is connected to the air supply chamber (2015). The air supply chamber (2015) is connected to the air supply system (2011) through a pipeline.

2. The test equipment for inertial sensors according to claim 1, characterized in that: A drying air cavity (2012) connected to a drying air source is provided at one end of the support block (2017) away from the steel pipe, a bracket (2014) is fixedly connected to the side wall of the drying air cavity (2012), a side wall of the air supply cavity (2015) is fixedly connected to the bracket (2014), an air intake column (2013) is fixedly connected inside the bracket (2014), one end of the air intake column (2013) passes through the air supply chamber and the rotary joint (2016) in sequence and is inserted into the interior of the rotating cylinder (2018), an air passage connecting the drying air cavity (2012) and the rotating cylinder (2018) is provided inside the air intake column (2013, and an end of the rotating cylinder (2018) away from the drying air cavity (2012) is connected to the interior of the clamp (220) through a drying air pipe.

3. The test equipment for inertial sensors according to claim 1, characterized in that: A first wire harness (2008) connected to the test turntable (2002) passes through a rotating disk (1004) in the rotating body (2010), and a plurality of cross bars (2003) are fixedly connected to the rotating disk (1004) at one end away from the test turntable (2002), and the plurality of cross bars (2003) pass through a wire take-up disk (2009), and the wire take-up disk (2009) is fixedly connected to the cross bars (2003). (2008) passes through the rotating disk (1004) and is then coiled on the wire taking-up disk (2009). The end of the first wire harness (2008) that faces away from the wire taking-up disk (2009) is clamped by a first wire clamp. The first wire clamp is fixedly connected to the support frame (1002). The length of the first wire harness (2008) between the first wire clamp and the wire taking-up disk (2009) is the rotation margin of the first wire harness (2008).

4. The test equipment for inertial sensors according to claim 3, characterized in that: A second wire harness (2004) connected to the test turntable (2002) passes through a rotating disk (1004) in the rotating body (2010); the second wire harness (2004) passes through the rotating disk (1004) and is clamped by a third wire clamp fixed to the cross bar (2003); a protective cover (2001) is fixed to the support frame (1002); a through hole is provided at the bottom of the protective cover (2001) for the first wire harness and the second wire harness (2004) to move; the second wire harness passing through the third wire clamp is coiled on the outer shell of the protective cover (2001) from an end away from the third wire clamp after passing through the through hole and hanging down.

5. The test equipment for inertial sensors according to claim 4, characterized in that: A rotating ring plate is rotatably connected to the support block (2017), and the end of the rotating ring plate is fixedly connected to the cross bar (2003).

6. The test equipment for inertial sensors according to claim 1, characterized in that: The invention also comprises a limiting structure, wherein the limiting structure comprises a first sprocket (1005) fixedly connected to the rotating disk (1004), two second sprockets (1006) adjustably mounted on the top of the supporting frame (1002), a detection frame (1001) fixedly connected to the top of the supporting frame (1002) and located between the two second sprockets (1006), and a chain (1003) meshed with the first sprocket (1005) and the two second sprockets (1006), wherein the chain (1003) located between the two first sprockets (1005) passes through the detection frame (1001), a positioning block (1009) is fixedly connected to the chain (1003), and first position sensors (1007) for identifying the positioning block (1009) are provided at both ends of the detection frame (1001).

7. The test equipment for inertial sensors according to claim 1, characterized in that: The fixture (2020) comprises a base plate (1), an outer cover (2), a pressing mechanism, a clamping mechanism (13), a temperature control component and a test component (9), wherein the pressing mechanism is installed at the lower end of the base plate (1), the output end of the pressing mechanism passes through the base plate (1) upward and is connected to the outer cover (2), the outer cover (2) can form a cavity with the base plate (1), the test component (9) and the clamping mechanism (13) are respectively installed at the upper end of the base plate (1), the temperature control component is installed at the upper end of the test component (9), the output end of the clamping mechanism (13) is provided with a toggle plate (14), the output end of the toggle plate (14) is an elastic structure (15), a first notch (901) is provided on the temperature control component, and the elastic structure (15) can extend into the upper part of the first notch (901).

8. The test equipment for inertial sensors according to claim 7, characterized in that: The temperature control component comprises a heating plate (10) and a heat exchange plate (11); the heating plate (10) is mounted on the upper end of the test component (9); the heat exchange plate (11) is mounted on the upper end of the heating plate (10); a limit plate (12) is mounted on the upper end of the heat exchange plate (11); a gas flow channel (1101) is provided inside the heat exchange plate (11); an inlet of the gas flow channel (1101) is located on the bottom plate (1), and an outlet is located in the cavity.

9. The test equipment for inertial sensors according to claim 8, characterized in that: The fixture (2020) also includes a temperature sensor, which is installed on the heat exchange plate (11).

10. The test equipment for inertial sensors according to any one of claims 1 to 9, characterized in that: The test turntable (2002) includes a rotating frame, and rotating parts are fixedly connected to both side ends of the fixture (2020), and the rotating parts are fixedly connected to the inside of the rotating frame. The fixture (2020) is located inside the rotating frame, and the side of the rotating frame close to the rotating body (2010) is fixedly connected to the rotating disk (1004), and the central axis of the rotating part is perpendicular to the axis of the rotating disk (1004).

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