A test apparatus for inertial sensors

Abstract

The application provides a testing device for an inertial sensor, which comprises a support frame, a rotating main body, a rotating disc, a testing turntable, a clamp, a gas supply pipe, a steel pipe, a support rod, a support block, a rotating joint, a rotating cylinder, a gas supply cavity, a pipeline and a gas supply system; the rotating joint and the rotating cylinder are arranged on the device; the gas generated by the gas supply system will sequentially pass through the pipeline, the gas supply cavity, the rotating joint, the steel pipe and the gas supply pipe and finally reach the inside of the clamp; when the clamp rotates, that is, when the testing 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 clamp, the situation that the gas supply pipe is prone to bending is eliminated, the normal transportation of the gas is ensured, and the testing quality of the product is ensured.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and more specifically to a testing device for inertial sensors. Background Technology

[0002] Inertial sensors are widely used in aerospace, automotive, robotics, and other fields. To ensure the performance and accuracy of inertial sensors, rigorous testing is required. Currently, a common inertial sensor testing method involves fixing the sensor on a turntable and simulating different motion states by rotating the turntable to test the sensor's performance. Existing testing equipment typically uses air pipes to supply cooling air to the fixture when testing at a specific temperature, such as in low-temperature environments. However, as the turntable rotates, these pipes are prone to bending, affecting the delivery of cooling air and consequently impacting the test quality. Summary of the Invention

[0003] The purpose of this invention is to design a testing device for inertial sensors to solve the problems raised in the background art. To achieve the above objective, this invention provides the following technical solution: a rotating body fixed to a support frame, a test turntable fixed to a rotating disk in the rotating body, a clamp installed inside the test turntable, an air supply pipe connecting the clamp and passing through the middle of the rotating disk, a steel pipe connected to the air supply pipe, a support block fixed to a fixed end of the rotating body via a support rod, and a rotary joint installed on the support block with its 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 connects to the steel pipe, the air inlet of the rotary joint connects to the air supply chamber, and the air supply chamber is connected to the air supply system via a pipe.

[0004] Furthermore, the support block has a drying air chamber connected to the drying air source at one end away from the steel pipe. A bracket is fixed to the side wall of the drying air chamber, and the side wall of the air supply chamber is fixed to the bracket. An air inlet column is fixed inside the bracket. One end of the air inlet column passes through the air supply chamber and the rotary joint in sequence and is inserted into the interior of the rotating cylinder. The interior of the air inlet column has an air passage connecting the drying air chamber and the rotating cylinder. The end of the rotating cylinder away from the drying air chamber is connected to the interior of the clamp through a drying air pipe.

[0005] Furthermore, the first wire harness connected to the test turntable passes through the rotating disk in the rotating body. Several crossbars are fixed to the rotating disk at the end opposite to the test turntable. The crossbars pass through the take-up reel, which is fixed to the crossbars. After the first wire harness passes through the rotating disk, it is coiled around the take-up reel. The end of the first wire harness opposite to the take-up reel is clamped by a first wire clamp, which is fixed to the support frame. The length of the first wire harness between the first wire clamp and the take-up reel is the rotational allowance of the first wire harness.

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

[0007] Furthermore, a limiting block is fixed to the rotating disk at the end opposite to the test turntable to prevent the first wire harness located on the take-up reel from shifting.

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

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

[0010] Furthermore, the second wire harness connected to the test turntable passes through the rotating disk in the rotating body. After the second wire harness exits from the rotating disk, it is clamped by the third wire clamp fixed to the crossbar. A protective cover is fixed to the support frame. The bottom of the protective cover is provided with a through hole for the first wire harness and the second wire harness to move. After passing through the third wire clamp and hanging down, the second wire harness coils around the outer shell of the protective cover from the end away from the third wire clamp.

[0011] Furthermore, a fourth wire clamp for clamping the second wire harness is fixed to the outer casing.

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

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

[0014] Furthermore, a limiting block is fixed to the take-up reel, and the limiting block is provided with a through groove. The second wire bundle passing through the rotating disk passes sequentially through the through groove, the third wire clamp, between the two rotating rollers, the through hole, and the fourth wire clamp.

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

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

[0017] Furthermore, the first position sensor is a photoelectric sensor, and the positioning block is a light-shielding plate that can block 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 first position sensor is fixedly connected to both ends of the chain via a connecting plate.

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

[0020] Furthermore, the detection block has third notches at both ends for restricting the movement of the positioning block. 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 block consists of two parts, which are respectively fixed to both sides of the chain.

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

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

[0024] Furthermore, the vertical plate is provided with several threaded holes, and the horizontal plate is provided with several slots that are respectively aligned with the threaded holes. Bolts pass through the slots and are threadedly connected to 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 its output end 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. 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 into the upper part of the first notch.

[0026] Furthermore, the base plate is provided with guide posts, and the lower end of the outer cover is provided with guide holes, with the guide posts and guide holes being slidably connected.

[0027] Furthermore, the temperature control component is provided with a limiting plate at its upper end, and the limiting plate has a limiting groove that runs vertically through it. 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, the base plate is equipped with a dew point monitoring component, and the monitoring end of the dew point monitoring component is located in the cavity.

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

[0030] Furthermore, the temperature control component includes a heating element and a heat exchange plate. The heating element is installed on the upper end of the test component, the heat exchange plate is installed on the upper end of the heating element, and the limiting plate is installed on the upper end of the heat exchange plate. The heat exchange plate has a gas flow channel inside, with the inlet of the gas flow channel located on the bottom plate and the outlet located in the cavity.

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

[0032] Furthermore, the pressing mechanism includes a motor, a lead screw, and a pressing frame. The motor is mounted on the base plate, the lead screw is rotatably connected to the base plate, the motor and the lead screw are connected by gear and chain transmission, the lead screw is connected to the pressing frame, and the outer cover is mounted on the pressing frame.

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

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

[0035] Furthermore, the test turntable includes a rotating frame, with rotating components fixedly connected to both ends of the fixture. The rotating components are fixedly connected inside the rotating frame, and the fixture is located inside the rotating frame. The rotating frame is fixedly connected to the rotating disk on the side closest to the rotating body, and the central axis of the rotating component is perpendicular to the axis of the rotating disk.

[0036] Furthermore, the support frame is equipped with a limiting cylinder, and the bottom of the rotating frame is equipped with a positioning hole. When the telescopic rod of the limiting cylinder extends, it is inserted into the interior of the positioning hole.

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

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention is equipped with a rotary joint and a rotary cylinder. The gas generated by the gas supply system will pass through the pipeline, the gas supply chamber, the rotary 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 rotary cylinder will rotate simultaneously. At this time, under the action of the rotary joint, the gas supply chamber and the pipeline do not rotate. Since the gas supply pipe rotates synchronously with the fixture, the previous situation where the gas supply pipe was prone to bending is eliminated, ensuring the normal transportation of gas and ensuring the test quality of the product. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0041] Figure 2 This is a partially enlarged cross-sectional view of the present invention;

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

[0043] Figure 4 This is a magnified schematic diagram of a portion of the limiting structure;

[0044] Figure 5 This is a top-view structural diagram of the fixture;

[0045] Figure 6 This is a structural schematic diagram of the fixture viewed from below.

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

[0047] Figure 8 This is a schematic diagram of the pressing mechanism in the fixture viewed from below.

[0048] Figure 9 for Figure 8 Enlarged view of point A in the middle;

[0049] Figure 10 This is a schematic diagram of the structure of the outer cover in the fixture;

[0050] Figure 11 This is a schematic diagram of the assembly of the test components and clamping mechanism in the fixture;

[0051] Figure 12 for Figure 11 Enlarged view of point B in the middle;

[0052] Figure 13 This is a schematic diagram of the actuating plate in the fixture;

[0053] Figure 14 for Figure 13 A magnified view of point C in the middle.

[0054] The components include: 1. Base plate; 101. Guide post; 2. Outer cover; 201. Guide hole; 3. Motor; 4. Gear; 5. Chain; 6. Lead screw; 7. Pressure frame; 8. Pressure head; 9. Test assembly; 901. First notch; 10. Heating element; 11. Heat exchange plate; 1101. Gas flow channel; 12. Limiting plate; 1201. Limiting groove; 13. Clamping mechanism; 14. Actuating plate; 15. Elastic structure; 16. Chip; 17. Dew point monitoring assembly; 18. Drying gas diffuser.

[0055] 1001. Detection frame; 1002. Support frame; 1003. Chain; 1004. Rotary disk; 1005. First sprocket; 1006. Second sprocket; 1007. First position sensor; 1008. Detection block; 1009. Positioning block; 1010. Tensioning sprocket; 1011. Vertical plate; 1012. Groove; 1013. Horizontal plate; 1014. Bottom plate; 1015. Third notch;

[0056] 2001, Protective cover; 2002, Test turntable; 2003, Crossbar; 2004, Second wire harness; 2005, Rotating roller; 2006, Limiting roller; 2007, Limiting block; 2008, First wire harness; 2009, Take-up reel; 2010, Rotating body; 2011, Air supply system; 2012, Drying air chamber; 2013, Air inlet column; 2014, Bracket; 2015, Air supply chamber; 2016, Rotary joint; 2017, Support block; 2018, Rotating cylinder; 2019, Support rod; 2020, Clamp. Detailed Implementation

[0057] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0058] Example: Please refer to Figure 1-2A testing device for inertial sensors includes a rotating body 2010 fixed to a support frame 1002, a test turntable 2002 fixed to a rotating disk 1004 within the rotating body 2010, a clamp 2020 installed inside the test turntable 2002, an air supply pipe connecting the clamp 2020 and passing through the middle of the rotating disk 1004, a steel pipe connected to the air supply pipe, a support block 2017 fixed to a fixed end of the rotating body 2010 via a support rod 2019, and a rotary joint 2016 installed on the support block 2017 with its air outlet connected to the steel pipe. The end of the rotary joint 2016 at its air outlet is connected to a rotating cylinder 2018 fixed to the test turntable 2002. The steel pipe is located inside the rotating cylinder 2018. The air pipe passes through the rotating cylinder 2018 and connects to the steel pipe. The air inlet of the rotary joint 2016 connects to the air supply chamber 2015, which in turn connects to the air supply system 2011 via a pipe. The air supply system 2011 can be a refrigeration unit. The cold air generated by the refrigeration unit passes sequentially through the pipe, air supply chamber 2015, rotary joint 2016, steel pipe, and air supply pipe, ultimately reaching the inside of the clamp 2020. When the clamp 2020 rotates, the air supply pipe and the rotating cylinder 2018 rotate simultaneously. At this time, under the action of the rotary joint 2016, the air supply chamber 2015 and the pipe do not rotate. Because the air supply pipe rotates synchronously with the clamp 2020, the previous problem of the air supply pipe easily bending is eliminated, ensuring the normal transportation of cold air and maintaining... The product's testing quality was verified, and a protective cover was provided on the support block 2017. The rotary joint 2016 can be adapted to the common circulating gas rotary joint 2016. For example, keeping the rotating structure of the rotary joint 2016 unchanged, one end is connected to the gas supply chamber 2015, and the other end is fixed to a plug. The middle of the plug is fixed to the rotating cylinder 2018, and a through hole is opened in the plug, communicating with a steel pipe. This allows gas to flow from the rotary joint 2016 through the through hole into the steel pipe, thus preventing cold air from entering the rotating cylinder 2018. The connection between the rotary joint 2016 and the support block 2017 can be such that the end of the rotary joint 2016 facing away from the rotating cylinder 2018 is fixed to the support block 2017. The rotation of the rotary joint 2016... The structure is located between the support block 2017 and the support frame 1002, thereby ensuring the stability of the rotation of the rotating cylinder 2018. The end of the support block 2017 away from the steel pipe is provided with a drying air chamber 2012 that is connected to the drying air source. A bracket 2014 is fixed to the side wall of the drying air chamber 2012. The side wall of the air supply chamber 2015 is fixed to the bracket 2014. An air inlet column 2013 is fixed inside the bracket 2014. One end of the air inlet 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. The interior of the air inlet column 2013 is provided with an air passage connecting the drying air chamber 2012 and the rotating cylinder 2018. The end of the rotating cylinder 2018 away from the drying air chamber 2012 is connected to the interior of the clamp 2020 through a drying air pipe.The drying gas source uses a common drying gas supply system, which will not be elaborated on here. The drying gas flows sequentially through the drying gas chamber 2012, the air passage inside the air inlet column 2013, the rotating cylinder 2018, and the drying gas pipe into the fixture 2020. Cold air enters the gas flow channel 1101 of the plate in the fixture 2020. The product under test is located inside the drying chamber and mounted on the plate where the gas flow channel 1101 is located (heat exchange occurs between the plate and the inside of the drying chamber, thereby reducing the temperature inside the drying chamber and allowing the product under test to be subjected to extreme testing at a lower temperature). The drying gas flows into the drying chamber, and the gas flow channel 1101 is located inside the drying chamber, thus keeping the product under test in a dry environment and preventing frost buildup inside the drying chamber, which would affect the stable rotation of the test turntable 2002 and the inspection of the product under test. Quality measurement; Furthermore, the test turntable 2002 includes a rotating frame, with rotating components fixed to both ends of the fixture 2020. These rotating components are fixed inside the rotating frame, and the fixture 2020 is located inside the rotating frame. The side of the rotating frame closest to the rotating body 2010 is fixed to the rotating disk 1004. The central axis of the rotating component is perpendicular to the axis of the rotating disk 1004. Both the rotating component and the rotating body 2010 use DD motors, thereby enabling the fixture 2020 to rotate in three axes, ensuring the testing quality of the product. The support frame 1002 is equipped with limit cylinders, and the bottom of the rotating frame has positioning holes. When the extension rod of the limit cylinder extends, it inserts into the positioning hole. Two limit cylinders are symmetrically arranged, which facilitates the positioning of the rotating frame and prevents rotation of the rotating frame during product placement in 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. Several crossbars 2003 are fixedly connected to the rotating disk 1004 at the end opposite to the test turntable 2002. These crossbars 2003 pass through the take-up reel 2009, which is fixedly connected to the crossbars 2003. After the first wire harness 2008 exits the rotating disk 1004, it coils around the take-up reel 2009. The end of the first wire harness 2008 opposite to the take-up reel 2009 is clamped by a first wire clamp, which 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 reel 2009 is the length of the first wire harness 2008. The rotational allowance of the first wire harness 2008; wherein, the rotating body 2010 is a DD motor, and the DD motor has a through hole in the middle, through which the first wire harness 2008 can pass; therefore, when the DD motor starts, the rotating disk 1004 rotates, thereby causing the test turntable 2002 to rotate, which in turn causes the first wire harness 2008 to rotate, thereby causing the take-up reel 2009 to rotate. When the take-up reel 2009 rotates, the first wire harness 2008 will be coiled on the take-up reel 2009, at which time the rotational allowance decreases. When the DD motor reverses, the take-up reel 2009 will reverse, at which time the first wire harness 2008 coiled on the take-up reel 2009 will disengage one by one, at which time the rotational allowance increases, so the test... When the turntable 2002 rotates, the wire harness will coil and detach on the take-up reel 2009, thus preventing problems such as messy wiring, easy tangling and damage of the wires, and signal interference. The first wire harness 2008 between the first wire clamp and the take-up reel 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. This provides sufficient rotational margin while preventing the first wire harness 2008 from shifting too much after detaching from the take-up reel 2009, which would be detrimental to the stable winding of the first wire harness 2008. In addition, a device is fixed to the rotating disk 1004 at one end away from the test turntable 2002 to prevent the wire harness from being positioned on the take-up reel 2009. The first wire harness 2008 is misaligned by a limiting block 2007. The limiting block 2007 has a second notch, and the two end plates of the take-up reel 2009 are located within the second notch, thus ensuring that the first wire harness 2008 can be accurately wound on the take-up reel 2009. A 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. 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-crossing point of the first wire harness is between the first wire clamp and the second wire clamp. 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.Furthermore, the second wiring harness 2004, connected to the test turntable 2002, passes through the rotating disk 1004 in the rotating body 2010. After exiting the rotating disk 1004, the second wiring harness 2004 is clamped by a third wire clamp fixed to the crossbar 2003. A protective cover 2001 is fixed to the support frame 1002. The bottom of the protective cover 2001 has a through hole for the first and second wiring harnesses 2004 to move. After passing through the through hole and hanging down, the second wiring harness 2004 exits from the third wire clamp. One end of the wire harness, away from the third clamp, is coiled around the outer shell of the protective cover 2001. A fourth clamp for clamping the second wire harness 2004 is fixed to the outer shell, and the principle is the same as the anti-crossing mechanism of the first wire harness 2008. The difference is that the first wire harness 2008 is a wire harness, while the second wire harness 2004 is a ribbon cable. Wire harnesses are mostly used for power supply, while ribbon cables are mostly used for data transmission. Therefore, this invention can prevent cross-crossing of different types of wire harnesses during rotation. The bottom of the protective cover 2001 is provided with two rotating... The second wire harness 2004 is located between two rotating rollers, ensuring stable movement of the second wire harness 2004. A limiting block 2007 is fixedly attached to the take-up reel 2009. The limiting block 2007 has a through groove. The second wire harness 2004, passing through the rotating disk 1004, sequentially passes through the through groove, the third wire clamp, between the two rotating rollers 2005, the through hole, and the fourth wire clamp. This ensures that the anti-crossing point of the second wire harness is between the third and fourth wire clamps. The wire harness outside the third and fourth wire clamps is a fixed end, ensuring stable signal transmission from the second wire harness 2004. Furthermore, all four wire clamps can be implemented by using two grooved clamping plates to clamp the wire harness; this will not be elaborated further. A rotating ring plate is rotatably connected to the support block 2017. The end of the rotating ring plate is fixedly connected to the crossbar 2003. The rotatable connection can be achieved using a bearing connection, thus ensuring the stability of the crossbar 2003's support for the take-up reel 2009.

[0060] Please refer to Figure 3-4The invention also includes a limiting structure, which includes a first sprocket 1005 fixed to the rotating disk 1004, two second sprockets 1006 adjustablely mounted on the top of the support frame 1002, a detection frame 1001 fixed to the top of the support frame 1002 and located between the two second sprockets 1006, and a chain 10035 meshing 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 attached to the chain 10035. First position sensors 1007 for identifying the positioning blocks 1009 are provided at both ends of the detection frame 1001. The first position sensor 1007 is photoelectric. The sensor and positioning block 1009 are light-shielding plates that can block the light path of the photoelectric sensor. 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 the linear motion of the chain 1003 (the straight part of the chain 1003) which is easy to identify. A photoelectric sensor is used. When the light-shielding 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... The 450° rotation eliminates the limitations of the arrangement of stops and limiting components, meeting the continuous, over 360° limiting requirements. Furthermore, after receiving sensor signals, the control unit judges based on preset limiting angle values, rotation direction, and other parameters. If the rotating body is about to exceed the preset over-limit range (-90° to 360°), the control unit issues a control command to stop the rotating body's continued rotation via a drive mechanism (such as a motor and its driver) connected to the rotating body, thus achieving precise limiting. The two first sprockets 1005 are located at the same height, facilitating the adjustment of the positional relationship between circular motion and linear motion. The detection frame 1001 includes a support fixed to the support frame 1002. The block and the detection block 1008 are fixedly connected to the support block. The detection block 1008 is fixedly connected to the first position sensor 1007 at both ends of the chain 1003 through the connecting plate, thereby realizing the installation of the first position sensor 1007. The bottom plate 1014 is fixedly connected to the support block. The chain 1003 is located between the bottom plate 1014 and the detection block 1008 to prevent the straight chain 1003 from bending. The detection block 1008 has a third notch 1015 at both ends for limiting the movement of the positioning block 1009. 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, thereby limiting the continued movement of the positioning block 1009.Two positioning blocks 1009 are provided and fixed to both sides of the chain 1003 respectively, ensuring the stability of the chain 1003 under force when it is in contact with the third notch 1015, and preventing the chain 1003 from falling off the second sprocket 1006. A vertical plate 1011 is adjustablely connected to the top of the support frame 1002. The first sprocket 1005 is rotatably connected to the vertical plate 1011. A horizontal plate 1013 is adjustablely connected to the vertical plate 1011. A tensioning sprocket 1010 that meshes with the chain 1003 is rotatably connected to the horizontal plate 1013, thereby ensuring that the chain 1003 is in a taut state. To prevent chain slippage, the vertical plate 1011 has several threaded holes, and the horizontal plate 1013 has several slots 1012 aligned with the threaded holes. Bolts pass through the slots 1012 and are threaded into the threaded holes, thus enabling adjustable installation of the horizontal plate 1013 and ensuring the tension quality of the chain 1003. Furthermore, the adjustable connection between the support frame 1002 and the vertical plate 1011 can also be achieved in this manner, allowing for adjustment of the distance between the second sprockets 1006. All the aforementioned rotating connections can be implemented using a shaft and bearing connection, which will not be elaborated further 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 testing component 9. The pressing mechanism is installed at the lower end of the base plate 1, and its output end passes upward through the base plate 1 and connects to the outer cover 2. The outer cover 2 can move downward under the drive of the pressing mechanism to form a cavity with the base plate 1. The testing component 9 and the clamping mechanism 13 are respectively installed at the upper end of the base plate 1. The testing component 9 is used to test the chip 16, and the temperature control component is installed at the upper end of the testing component 9 to provide a high and low temperature environment for the chip 16. The output of the clamping mechanism 13... The output end is provided with a toggle plate 14, and the output end of the toggle plate 14 is an elastic structure 15. The temperature control component is provided with a first notch 901, which allows the chip 16 to be inserted. Under the drive of 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 against it, ensuring that the pins of the chip 16 are connected to the probes of the test component 9, thereby successfully realizing the test of the chip 16. The elastic structure 15 is bow-shaped and is made of an insulating material with a certain deformation capability, so that it can be used repeatedly without causing a short circuit in the chip 16. The test component 9 includes an MCU board for I / O signal conversion and a connector for signal conversion, both located within a cavity on the base plate 1. In this embodiment, a limiting plate 12 is provided at the upper end of the temperature control component. The limiting plate 12 has a vertically penetrating limiting groove 1201, which corresponds to the position of the first notch 901. An elastic structure 15 is located between the limiting groove 1201 and the first notch 901. The limiting groove 1201 provides positioning for the chip 16, and after the chip 16 is inserted, the elastic structure 15 holds the chip 16 against the limiting groove 1201 from the side, ensuring that the pins of the chip 16 are aligned with the probes of the test component 9. A dew point monitoring component 17 is provided on the base plate 1. The monitoring end of the dew point monitoring component 17 is located in the cavity and is used to monitor the dew point within the cavity. A drying gas diffuser 18, connected to a drying gas pipe, is mounted on the base plate 1 and is located within the cavity. The drying gas diffuser 18 is filled with drying gas, which is released into the cavity (i.e., the drying cavity) during low-temperature testing of the chip 16 to prevent frost formation inside the cavity. The temperature control assembly includes a heating element 10 and a heat exchange plate 11. The heating element 10 is mounted on the upper end of the test assembly 9, and the heat exchange plate 11 is mounted on the upper end of the heating element 10. A limiting 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. The inlet of the gas flow channel 1101 is located on the base plate 1, and the outlet is located in the cavity. The heating element 10 provides heat to the heat exchange plate 11 and the cavity, providing a high-temperature environment for chip 16 testing. Cold gas is introduced into the gas flow channel 1101 and exchanges heat with the cavity through the heat exchange plate 11, providing a low-temperature environment for chip 16 testing. Through the above methods, a testing environment of -55℃ to 150℃ can be provided for the chip 16.The temperature control assembly also includes a temperature sensor mounted on the heat exchange plate 11. The temperature sensor can be electrically connected to the test assembly 9 or an external controller for automated temperature control. The pressing mechanism includes a motor 3, a lead screw 6, and a pressing frame 7. The motor 3 is mounted on the base plate 1, and the lead screw 6 is rotatably connected to the base plate 1. The motor 3 and the lead screw 6 are connected by a gear 4 and a chain 5. The lead screw 6 is also connected to the pressing frame 7. The outer cover 2 is mounted on the pressing frame 7. Driven by the motor 3, multiple lead screws 6 on the base plate 1 rotate synchronously via the gear 4 and chain 5, thereby pressing or releasing the chip 16 on the pressing frame 7, and simultaneously opening and closing the outer cover 2. The lower end of the pressing frame 7 has a pressing head 8 with downward protrusions on both sides, which can press down on both ends of the chip 16, making the connection between the chip 16 pins and the probes more secure and ensuring normal testing. The base plate 1 is provided with guide posts 101, and the lower end of the outer cover 2 is provided with guide holes 201. The guide posts 101 and guide holes 201 are slidably connected to provide guidance for the opening and closing of the pressure frame 7. The base plate 1 is provided with a second position sensor, which is located on the side of the pressure frame 7 to monitor whether the pressure frame 7 is in position. In the automated production line, multiple sets of chips 16 are transported side by side. The robot arm picks up and places multiple matrix-shaped chips 16 into the limiting groove 1201 of this fixture, and then the cylinder of the clamping mechanism 13 pushes them out. The linkage mechanism drives the actuating plate 14 to run, so that the elastic structure 15 abuts 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 pressing head 8 presses the chip 16. 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 keeps the inside of the cavity warm. Under certain temperature conditions, the output data of chip 16 under high and low temperature changes and extreme temperatures are tested to determine whether chip 16 is qualified. This chip 16 test fixture enables rapid clamping, loosening, and replacement of chip 16, shortening the chip 16 installation time and significantly improving testing efficiency in large-scale chip 16 production testing. At the same time, the limiting groove 1201 and the elastic structure 15 can adapt to chips 16 of different sizes and packaging forms, improving the fixture's compatibility with diverse chip 16 testing scenarios. In addition, the elastic structure 15 and the pressure head 8 ensure stable clamping and pressing of chip 16, thereby ensuring reliable electrical connection and thus ensuring the accuracy of test results, further improving the reliability of this fixture 2020.

[0062] The working principle of this embodiment is as follows: The cold air generated by the refrigeration unit will pass through the pipe, the air inlet chamber, 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 simultaneously. At this time, under the action of the rotary joint 2016, the air inlet chamber and the pipe will not rotate. Since the air supply pipe rotates synchronously with the fixture 2020, the previous situation where the air supply pipe was prone to bending is eliminated, ensuring the normal transportation of cold air and ensuring the testing quality of the product.

[0063] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A test apparatus for an inertial sensor, characterized by: The utility model discloses a test rotary table, which comprises a rotating main body (2010) fixed on a support frame (1002), a test rotary table (2002) fixed on a rotating disc (1004) in the rotating main body (2010), a clamp (2020) installed inside the test rotary table (2002), a gas supply pipe communicated with the clamp (2020) and penetrating through the middle part of the rotating disc (1004), a steel pipe communicated with the gas supply pipe, a support block (2017) fixed on the fixed end of the rotating main body (2010) through a support rod (2019), and a rotary joint (2016) installed on the support block (2017) and having an air outlet communicated with the steel pipe. The clamp (2020) comprises a bottom plate (1), an outer cover (2), a pressing mechanism, a clamping mechanism (13), a temperature control assembly and a test assembly (9), the pressing mechanism is installed at the lower end of the bottom plate (1), the output end of the pressing mechanism penetrates through the bottom plate (1) upwards and is connected with the outer cover (2), the outer cover (2) and the bottom plate (1) form a cavity, the test assembly (9) and the clamping mechanism (13) are installed at the upper end of the bottom plate (1), the temperature control assembly is installed at the upper end of the test assembly (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), the temperature control assembly is provided with a first notch (901), and the elastic structure (15) can extend into the upper side of the first notch (901).

2. The test apparatus for an inertial sensor according to claim 1, characterized by: The end of the support block (2017) away from the steel pipe is provided with a dry gas cavity (2012) communicated with a dry gas source, a support (2014) is fixed on the side wall of the dry gas cavity (2012), the side wall of the gas supply cavity (2015) is fixed on the support (2014), an air inlet column (2013) is fixed in the support (2014), one end of the air inlet column (2013) penetrates through the gas supply chamber, the rotary joint (2016) and is inserted into the inside of the rotary cylinder (2018) in sequence, the inside of the air inlet column (2013) is provided with an air channel communicated with the dry gas cavity (2012) and the rotary cylinder (2018), and the end of the rotary cylinder (2018) away from the dry gas cavity (2012) is communicated with the inside of the clamp (2020) through a dry gas pipe.

3. The test apparatus for an inertial sensor according to claim 1, characterized by: A first wire harness (2008) connected with the test turntable (2002) passes through a rotating disc (1004) in the rotating main body (2010), a plurality of cross bars (2003) are fixed on the rotating disc (1004) away from the test turntable (2002), a plurality of the cross bars (2003) penetrate a take-up disc (2009), the take-up disc (2009) is fixed with the cross bars (2003), the first wire harness (2008) is wound on the take-up disc (2009) after passing out of the rotating disc (1004), the first wire harness (2008) is clamped by a first wire clamp away from the take-up disc (2009), the first wire clamp is fixed on the support frame (1002), and the length of the first wire harness (2008) between the first wire clamp and the take-up disc (2009) is a rotation allowance of the first wire harness (2008).

4. The test apparatus for an inertial sensor according to claim 3, characterized by: A second wire harness (2004) connected with the test turntable (2002) passes through the rotating disc (1004) in the rotating main body (2010), the second wire harness (2004) is clamped by a third wire clamp fixed on the cross bar (2003) after passing out of the rotating disc (1004), a shroud (2001) is fixed on the support frame (1002), the bottom of the shroud (2001) is provided with a through hole for the movement of the first wire harness and the second wire harness (2004), the second wire harness passing through the third wire clamp is wound on the shell of the shroud (2001) after passing through the through hole and falling down away from the third wire clamp.

5. The test apparatus for an inertial sensor according to claim 4, characterized by: A rotating ring plate is rotatably connected to the support block (2017), and the end of the rotating ring plate is fixed with the cross bar (2003).

6. The test apparatus for an inertial sensor according to claim 1, characterized by: Further comprising a limiting structure, the limiting structure comprises a first sprocket (1005) fixed on the rotating disc (1004), two second sprockets (1006) adjustably installed on the top of the support frame (1002), a detection frame (1001) fixed on the top of the support frame (1002) and located between the two second sprockets (1006), and a chain (1003) engaged with the first sprocket (1005) and the two second sprockets (1006), the chain (1003) located between the two first sprockets (1005) passes through the detection frame (1001), and a positioning block (1009) is fixed on the chain (1003).

7. The test apparatus for inertial sensors of claim 1, wherein: The temperature control assembly comprises a heating sheet (10) and a heat exchange plate (11), the heating sheet (10) is installed on the upper end of the test assembly (9), the heat exchange plate (11) is installed on the upper end of the heating sheet (10), and a limiting plate (12) is installed on the upper end of the heat exchange plate (11). The heat exchange plate (11) is internally provided with a gas flow channel (1101), the inlet of the gas flow channel (1101) is located on the bottom plate (1), and the outlet is located in the cavity.

8. The test apparatus for an inertial sensor according to claim 7, characterized by: The clamp (2020) further comprises a temperature sensor mounted on the heat exchange plate (11).

9. The test apparatus for an inertial sensor according to any one of claims 1 to 8, characterized in that: The test turntable (2002) comprises a rotating frame, both sides of the clamp (2020) are fixedly connected with rotating members, the rotating members are fixedly connected to the inside of the rotating frame, the clamp (2020) is located in the inside of the rotating frame, and one side of the rotating frame close to the rotating body (2010) is fixedly connected with the rotating disc (1004). The central axis of the rotating member is perpendicular to the axis of the rotating disc (1004).

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