Sensor performance testing device

Abstract

The utility model relates to test equipment technical field provides a kind of sensor performance testing device, including test platform, host computer and test component;Test platform is equipped with starting point position and end point position, for carrying mobile device;Host computer is connected with mobile device, for configuring the anti-collision distance of the TOF sensor of mobile device, control mobile device reciprocating movement between starting point position and end point position;Test component includes obstacle and range finder, obstacle is located in end point position, range finder is located on obstacle, and is connected with host computer communication, range finder is used to detect the distance information of the distance of mobile device stop distance obstacle;Host computer is used to determine the performance index of TOF sensor according to the comparison result of distance information and anti-collision distance that range finder gathers.The utility model can conveniently carry out multi-round performance test to the TOF sensor of mobile device, test process does not need manual participation, improves test efficiency, satisfies the test demand of large quantities.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a sensor performance testing device. Background Technology

[0002] Currently, mobile devices such as AI robots, portable teaching all-in-one machines, and sensory integration training equipment are typically equipped with TOF sensors, or Time of Flight sensors. These sensors measure distance by measuring the time it takes for a light pulse to travel from emission to reception. By setting a collision avoidance distance for the TOF sensor, the mobile device can stop moving when it reaches the collision avoidance distance, thus achieving collision protection.

[0003] In practical applications, in order to determine the reliability of TOF sensor performance, the distance between the mobile device and the obstacle when it is stationary is usually measured manually, the error of the test distance relative to the set anti-collision distance is analyzed, and multiple tests are performed. This testing method requires manual distance measurement operations multiple times and back-and-forth movement of the mobile device, which is inefficient and cannot meet the needs of TOF sensor performance testing of a large number of mobile devices. Utility Model Content

[0004] This invention provides a sensor performance testing device to at least solve or improve the problem that current performance testing of TOF sensors on mobile devices is inefficient and cannot meet the needs of large-scale testing.

[0005] This utility model provides a sensor performance testing device, comprising:

[0006] The testing platform, with a start and end point, is used to support mobile devices.

[0007] The host computer is configured to communicate with the mobile device, configure the collision avoidance distance of the TOF sensor of the mobile device, and control the mobile device to move back and forth between the starting position and the ending position;

[0008] The testing component includes an obstacle and a rangefinder. The obstacle is located at the endpoint, and the rangefinder is mounted on the obstacle and communicates with the host computer. The rangefinder is used to detect the distance information between the mobile device and the obstacle when the mobile device stops.

[0009] The host computer is used to determine the performance indicators of the TOF sensor based on the comparison between the distance information collected by the rangefinder and the collision avoidance distance.

[0010] According to the sensor performance testing device provided by this utility model, the host computer is used to output a test result indicating test failure when the difference between the distance information and the collision avoidance distance is greater than a preset error, and to output a test result indicating test success when the difference between the distance information and the collision avoidance distance is not greater than the preset error.

[0011] According to the sensor performance testing device provided by this utility model, the obstacle is movably disposed on the testing platform, and the testing platform includes:

[0012] A color swatch, used to carry the mobile device, and configured to be recognizable by the IR sensor of the mobile device, wherein the endpoint is located at the edge of the color swatch;

[0013] A weighing sensor is located on the lower side of the color plate and is communicatively connected to the host computer.

[0014] The host computer is used to determine whether the mobile device has fallen from the color plate based on the weighing information fed back by the weighing sensor, and to determine the performance indicators of the IR sensor based on the drop test results of the mobile device.

[0015] According to the sensor performance testing device provided by this utility model, the testing components further include:

[0016] A drive mechanism connected to the obstacle to drive the obstacle to switch between a first state and a second state;

[0017] When the obstacle is in the first state, the obstacle is at the endpoint position; when the obstacle is in the second state, the obstacle is away from the endpoint position.

[0018] According to the sensor performance testing device provided by this utility model, the obstacle is a hook, and the driving mechanism includes a drive motor. The drive motor is connected to the hook to drive the hook to rotate and switch between the first state and the second state.

[0019] When the hook is in the first state, the hook is located on the upper side of the color plate;

[0020] When the hook is in the second state, the hook is located under the color plate to catch the mobile device that falls from the color plate.

[0021] According to the sensor performance testing device provided by this utility model, it further includes: a transfer component, which is communicatively connected to the host computer;

[0022] The host computer is used to control the transfer component to transfer the fallen mobile device onto the color plate when it is determined that the mobile device has fallen from the color plate.

[0023] According to the sensor performance testing device provided by this utility model, the transfer assembly includes:

[0024] The first conveyor line is located on the upper side of the test platform and extends in the direction from the starting position to the ending position;

[0025] A reel, which is connected to the first conveyor line and to the mobile device, to control the lifting and lowering of the mobile device;

[0026] The first conveyor line and the winding device are respectively connected to the host computer for communication.

[0027] According to the sensor performance testing device provided by this utility model, there are multiple first conveyor lines and multiple winding devices. The multiple first conveyor lines and multiple winding devices are arranged opposite to each other. The multiple winding devices cooperate to control the placement posture of the mobile device during the lifting and lowering process.

[0028] According to the sensor performance testing device provided by this utility model, the testing platform further includes:

[0029] A base plate is disposed on the lower side of the color plate, the base plate having a receiving cavity, and the weighing sensor is disposed in the receiving cavity;

[0030] A circuit board is disposed in the receiving cavity. The rangefinder and the weighing sensor are respectively communicatively connected to the circuit board, and the circuit board is communicatively connected to the host computer.

[0031] According to the sensor performance testing device provided by this utility model, the testing platform further includes:

[0032] A baffle extends circumferentially along the base plate and is located on the base plate on other sides except for the endpoint.

[0033] According to the sensor performance testing device provided by this utility model, the testing platform further includes:

[0034] A scale marking is provided on the baffle extending from the starting position to the ending position.

[0035] According to the sensor performance testing device provided by this utility model, it further includes:

[0036] A visual acquisition component, which is communicatively connected to the host computer, is used to acquire the posture information of the mobile device moving on the test platform.

[0037] The host computer is used to control the mobile device to move along the extension direction from the starting position to the ending position based on the posture information fed back by the vision acquisition component.

[0038] According to the sensor performance testing device provided by this utility model, the visual acquisition component includes:

[0039] The second conveyor line is located on the upper side of the test platform and extends in the direction from the starting position to the ending position;

[0040] A camera module is connected to the second conveyor line, and the camera module is used to acquire image information of the mobile device;

[0041] The second conveyor line and the camera module are respectively connected to the host computer for communication.

[0042] The sensor performance testing device provided by this utility model, by setting up a test platform, a host computer, and test components, and configuring the test components including obstacles and a rangefinder, allows the host computer to set the anti-collision distance of the TOF sensor of the mobile device according to the test requirements. Since the obstacle is set at the end position of the test platform and the rangefinder is installed on the obstacle, when the host computer controls the mobile device to move from the starting position to the end position, the mobile device will stop close to the obstacle based on the information fed back by the TOF sensor. By comparing the distance information of the mobile device from the obstacle when it stops, collected by the rangefinder, with the set anti-collision distance, the host computer can determine whether the mobile device stops accurately at the position corresponding to the set anti-collision distance, thereby judging the performance index of the TOF sensor. After completing one round of testing on the mobile device, the host computer can also control the mobile device to return to the starting position of the test platform to perform the next round of testing on the mobile device, and so on, to obtain the performance index of the TOF sensor when the mobile device is tested multiple times.

[0043] As can be seen from the above, the sensor performance testing device shown in this utility model can conveniently perform multiple rounds of performance testing on the TOF sensor of mobile devices. The entire testing process does not require manual intervention, which improves testing efficiency and can meet the needs of large-scale testing. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0045] Figure 1 This is a top view of the sensor performance testing device provided by this utility model.

[0046] Figure 2 This is a block diagram of the control structure of the sensor performance testing device provided by this utility model.

[0047] Figure 3 This is a cross-sectional structural diagram of the testing platform provided by this utility model.

[0048] Figure 4 This is a schematic diagram of the sensor performance testing device provided by this utility model for testing the performance of the TOF sensor of a mobile device.

[0049] Figure 5 This is a schematic diagram of the sensor performance testing device provided by this utility model for testing the performance of the IR sensor of a mobile device.

[0050] Figure 6 This is a top-view schematic diagram of the mobile device moving on the test platform, captured by the camera module provided by this utility model.

[0051] Figure label:

[0052] 1. Testing platform; 11. Weighing sensor; 12. Color plate; 13. Base plate; 14. Circuit board; 15. Baffle; 101. Scale markings;

[0053] 2. Test components; 21. Rangefinder; 22. Obstacle; 23. Drive mechanism;

[0054] 3. Transfer assembly; 31. First conveyor line; 32. Winding reel;

[0055] 4. Visual acquisition component; 41. Second conveyor line; 42. Camera module;

[0056] 100. Host computer; 200. Mobile device. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0058] The following is combined Figures 1-6 The sensor performance testing device provided by the utility model embodiment will be described in detail through specific embodiments and application scenarios.

[0059] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a sensor performance testing device, including: a testing platform 1, a host computer 100, and a testing component 2;

[0060] Test platform 1 is equipped with a start point and an end point to support mobile device 200;

[0061] The host computer 100 is configured to communicate with the mobile device 200 to configure the collision avoidance distance of the TOF sensor of the mobile device 200 and control the mobile device 200 to move back and forth between the starting position and the ending position.

[0062] The test component 2 includes an obstacle 22 and a rangefinder 21. The obstacle 22 is located at the end point, and the rangefinder 21 is located on the obstacle 22 and is connected to the host computer 100. The rangefinder 21 is used to detect the distance information between the mobile device 200 and the obstacle 22 when the mobile device 200 stops.

[0063] The host computer 100 is used to determine the performance indicators of the TOF sensor based on the comparison results between the distance information collected by the rangefinder 21 and the collision avoidance distance.

[0064] It is understood that the mobile device 200 includes AI robots, mobile teaching all-in-one machines, sensory integration training equipment, etc. The mobile device 200 is equipped with a TOF sensor, a controller, a first wireless communication module and a walking mechanism. The TOF sensor and the controller are connected in communication. The controller is connected in communication with the second wireless communication module and the walking mechanism respectively. The detection end of the TOF sensor is distributed in front of the mobile device 200 in the direction of movement.

[0065] In practical applications, the Time-of-Flight (TOF) sensor is used to detect obstacles in front of the mobile device 200 along its walking direction. When the distance between the mobile device 200 and the obstacle reaches the collision avoidance distance of the TOF sensor, the controller will control the walking mechanism to stop moving, and the mobile device 200 will stop moving immediately to achieve the purpose of collision avoidance. Therefore, in this embodiment, by controlling the mobile device 200 to move back and forth between the starting position and the ending position, the accuracy of the TOF sensor in detecting obstacles can be tested by determining whether the mobile device 200 stops accurately at the position corresponding to the collision avoidance distance of the TOF sensor.

[0066] like Figure 4 As shown, for test platform 1, test platform 1 has a horizontally distributed platform. The starting point can be one end along the length direction of test platform 1, and the ending point can be the other end along the length direction of test platform 1. The straight-line distance between the starting point and the ending point is greater than the collision avoidance distance of the TOF sensor. The starting point is located at... Figure 4 The diagram uses A1 as an example, indicating the finish line location. Figure 4 The diagram uses A2.

[0067] For the host computer 100, it can be a laptop or a touchscreen controller. The host computer 100 is wirelessly connected to the first wireless communication module of the mobile device 200 via a second wireless communication module. The testing personnel can configure relevant parameters through the host computer 100 to configure different anti-collision distances for the TOF sensor of the mobile device 200 according to actual testing needs. The first and second wireless communication modules are of the same model, both of which can be Bluetooth or WiFi modules.

[0068] For test component 2, obstacle 22 can be rod-shaped or plate-shaped, and rangefinder 21 can be configured to be adjustablely mounted on obstacle 22 along its extension direction. When performing performance testing on the TOF sensor of mobile device 200, to facilitate accurate detection of obstacle 22 at its endpoint by the TOF sensor, obstacle 22 can be vertically distributed and positioned corresponding to the direction of movement of mobile device 200. The width of obstacle 22 in the direction perpendicular to the direction of movement of mobile device 200 is greater than the width of mobile device 200. Rangefinder 21 is horizontally distributed, and its detection end is horizontally oriented towards mobile device 200.

[0069] The sensor performance testing device shown in this embodiment of the invention, by setting up a test platform 1, a host computer 100, and a test component 2, and configuring the test component 2 to include an obstacle 22 and a rangefinder 21, allows the host computer 100 to set the collision avoidance distance of the TOF sensor of the mobile device 200 according to testing requirements. Since the obstacle 22 is set at the end position on the test platform 1, and the rangefinder 21 is mounted on the obstacle 22, when the host computer 100 controls the mobile device 200 to move from the starting position towards the end position, the mobile device 200 will, based on the information fed back by the TOF sensor, move towards the obstacle 22. When the mobile device 200 stops on the moving path, the host computer 100 compares the distance information between the mobile device 200 and the obstacle 22 when it stops, collected by the rangefinder 21, with the set anti-collision distance. This allows the host computer to determine whether the mobile device 200 stops accurately at the position corresponding to the set anti-collision distance, thereby judging the performance index of the TOF sensor. After completing one round of testing on the mobile device 200, the host computer 100 can also control the mobile device 200 to return to the starting position of the test platform 1 and perform the next round of testing on the mobile device 200. This process is repeated to obtain the performance index of the TOF sensor when the mobile device 200 is tested multiple times.

[0070] As can be seen from the above, the sensor performance testing device shown in this utility model can conveniently perform multiple rounds of performance testing on the TOF sensor of the mobile device 200. The entire testing process does not require manual intervention, which improves testing efficiency and can meet the needs of large-scale testing.

[0071] In some embodiments, the host computer 100 is used to output a test result indicating test failure when the difference between the distance information and the collision avoidance distance is greater than a preset error, and to output a test result indicating test success when the difference between the distance information and the collision avoidance distance is not greater than the preset error.

[0072] The host computer 100 can count the total number of tests and the number of successful tests of the TOF sensor of the mobile device 200, divide the number of successful tests by the total number of tests to obtain the test success rate of the mobile device 200, and evaluate whether the accuracy of the TOF sensor meets the standard based on the test success rate.

[0073] In some embodiments, such as Figure 2 , Figure 3 and Figure 5 As shown, obstacle 22 is movably set on test platform 1, which includes color plate 12 and weighing sensor 11;

[0074] The color plate 12 is used to carry the mobile device 200 and is configured to be recognizable by the IR sensor of the mobile device 200, with the end position located at the edge of the color plate 12; the weighing sensor 11 is located on the lower side of the color plate 12 and is communicatively connected to the host computer 100.

[0075] The host computer 100 is used to determine whether the mobile device 200 has fallen from the color plate 12 based on the weighing information fed back by the weighing sensor 11, and to determine the performance indicators of the IR sensor based on the drop test results of the mobile device 200.

[0076] It is understood that the obstacle 22 can be movably set on the test platform 1 in a horizontal or flipping manner. When the obstacle 22 is at the end position of the test platform 1, the sensor performance testing device shown in this embodiment can perform performance testing on the TOF sensor of the mobile device 200. By removing the obstacle 22 from the end position of the test platform 1, the sensor performance testing device shown in this embodiment can perform performance testing on the IR sensor of the mobile device 200.

[0077] For the color plate 12, a material with an IR value between 18 and 23 is selected. For example, the color plate 12 can be a yellow plate with an IR value of 18 or a white plate with an IR value of 23. In practical applications, different colored color plates 12 can be replaced on the weighing sensor 11 according to different testing requirements, which improves the convenience of performing performance testing on the TOF sensor of the mobile device 200.

[0078] For the weighing sensor 11, the weighing sensor 11 can be a resistance strain gauge weighing sensor 11 or a capacitive weighing sensor 11. Multiple weighing sensors 11 can be set up, and multiple weighing sensors 11 are arranged side by side and supported on the lower side of the color plate 12. The weighing information of the color plate 12 and the load on its upper side can be obtained based on the detection data of multiple weighing sensors 11.

[0079] When the mobile device 200 does not fall off the color plate 12, the weighing information fed back by the weighing sensor 11 is the sum of the weights of the color plate 12 and the mobile device 200. When the mobile device 200 falls off the color plate 12, the weighing information fed back by the weighing sensor 11 is the weight of the color plate 12.

[0080] An IR sensor, also known as an infrared sensor, is an electronic device that measures and detects infrared radiation in the surrounding environment. An IR sensor typically consists of a light-emitting diode (LED) and a receiver. When an object approaches the sensor, the infrared light emitted by the LED illuminates the object and is reflected back to the receiver. In the case of the mobile device 200 shown in this embodiment, the IR sensor is located at the bottom of the mobile device 200, with its detection end facing the color plate 12.

[0081] During the performance test of the IR sensor, the obstacle 22 is removed from the end position of the test platform 1. The host computer 100 controls the mobile device 200 to move from the starting position to the end position. During the movement of the mobile device 200, the IR sensor of the mobile device 200 continuously detects the color plate 12. Since the test value of the IR sensor will change when the mobile device 200 is placed on the test platform 1 and when the mobile device 200 is in a suspended state, if the mobile device 200 can stop moving in time when the test value of the IR sensor changes abnormally, the mobile device 200 will not fall from the test platform 1. At this time, the weighing data fed back by the weighing sensor 11 is the sum of the weight of the color plate 12 and the mobile device 200, indicating that the drop test of the mobile device 200 is successful, thus judging that the performance of the IR sensor meets the standard. Conversely, if the mobile device 200 falls from the test platform 1 during the test, the weighing data fed back by the weighing sensor 11 is the weight of the color plate 12, indicating that the drop test of the mobile device 200 fails, thus judging that the performance of the IR sensor does not meet the standard.

[0082] In this test, after the IR sensor of mobile device 200 completes one round of testing, if mobile device 200 does not fall at the endpoint, it can be controlled to return to the starting position for the next round of testing. If mobile device 200 falls at the endpoint, it can be manually or by other transfer equipment moved back to the starting position for the next round of testing, and so on. Similar to the testing scheme for the TOF sensor of mobile device 200, the total number of performance tests and the number of successful tests for the IR sensor of mobile device 200 can be counted. The number of successful tests divided by the total number of tests gives the test success rate of mobile device 200, and the performance of the IR sensor can be evaluated based on the test success rate.

[0083] In some embodiments, such as Figure 4 As shown, the test component 2 also includes a drive mechanism 23, which is connected to the obstacle 22 to drive the obstacle 22 to switch between a first state and a second state.

[0084] When obstacle 22 is in the first state, obstacle 22 is at the endpoint position, and the performance of the TOF sensor of mobile device 200 can be tested at this time. When obstacle 22 is in the second state, obstacle 22 is away from the endpoint position, and the drop test of mobile device 200 can be performed to verify the performance of the IR sensor on mobile device 200.

[0085] The drive mechanism 23 can be a telescopic rod or a flipping mechanism, and there is no specific limitation on it. The drive mechanism 23 can be configured to connect to the host computer 100, and the host computer 100 controls the drive mechanism 23 to switch the obstacle 22 between the first state and the second state.

[0086] In some embodiments, such as Figure 4 and Figure 5 As shown, obstacle 22 is a hook, and drive mechanism 23 includes drive motor, drive motor and hook are connected to drive hook to rotate and switch between first state and second state;

[0087] In the first state, the hook is located above the color plate 12; in the second state, the hook is located below the color plate 12 to catch the mobile device 200 that falls from the color plate 12.

[0088] It is understood that the hook includes a hook shank and a hook head, the output end of the drive motor is connected to the first end of the hook shank, the second end of the hook shank is connected to the hook head, the rangefinder 21 is set on the hook shank, and the detection direction of the rangefinder 21 is perpendicular to the extension direction of the hook shank.

[0089] When the TOF sensor of the mobile device 200 is tested for performance, the drive motor drives the hook to the first state. At this time, the hook is above the color plate 12 and the hook handle is perpendicular to the horizontal plane.

[0090] When performing performance testing on the IR sensor of the mobile device 200, the drive motor can drive the hook to rotate 180° so that the hook is positioned below the color plate 12 and the hook head is facing upwards, so as to catch the mobile device 200 falling from the color plate 12 and prevent the mobile device 200 from falling to the ground and being damaged.

[0091] In some embodiments, the hook head is provided with a flexible structure, or the hook head is made of a flexible structure, such as foam or silicone. This design can prevent the mobile device 200 from rigidly contacting the hook head, thus protecting the mobile device 200 to a certain extent.

[0092] In some embodiments, such as Figure 2 and Figure 5As shown, the sensor performance testing device also includes: a transfer component 3, which is communicatively connected to the host computer 100;

[0093] The host computer 100 is used to control the transfer component 3 to transfer the fallen mobile device 200 onto the color plate 12 when it is determined that the mobile device 200 has fallen from the color plate 12.

[0094] Understandably, when the mobile device 200 falls from the color plate 12 onto the hook, the host computer 100 controls the transfer component 3 to pick up the mobile device 200 from the hook and then transfer the mobile device 200 onto the color plate 12.

[0095] In practical applications, after the mobile device 200 falls from the color plate 12, the transfer component 3 can pick up the mobile device 200 and place it at the endpoint position. The host computer 100 controls the mobile device 200 to return from the endpoint position to the starting position. The transfer component 3 can directly place the picked-up mobile device 200 at the starting position. After the mobile device 200 is at the starting position, the next round of IR sensor performance testing can be performed on the mobile device 200.

[0096] The transfer component 3 may be a robotic hand or other device capable of transferring the mobile device 200.

[0097] In some embodiments, such as Figure 2 and Figure 5 As shown, the transfer assembly 3 includes: a first conveyor line 31 and a reel 32; the first conveyor line 31 is located on the upper side of the test platform 1 and extends in the direction from the starting position to the ending position; the reel 32 is connected to the first conveyor line 31 and is connected to the mobile device 200 to control the lifting and lowering of the mobile device 200; wherein, the first conveyor line 31 and the reel 32 are respectively connected to the host computer 100 for communication.

[0098] Understandably, the first conveyor line 31 may be a linear module or a chain conveyor line, and the reel 32 includes an electric reel and a cable wound on the electric reel, the cable being configured to connect to the mobile device 200.

[0099] In practical applications, when testing the performance of the IR sensor of the mobile device 200, the cable of the reel 32 can be connected to the mobile device 200 when the mobile device 200 is at the starting position. During the process of the mobile device 200 moving from the starting position to the ending position, the host computer 100 can control the first conveyor line 31 to drive the reel 32 to move with the mobile device 200 at the same speed. At this time, the reel 32 is not controlled, that is, the length of the cable extending from the cable remains unchanged.

[0100] When the mobile device 200 falls onto the hook, the cable reel 32 will pull the electric reel to unwind the cable under the gravity of the mobile device 200. When the host computer 100 determines that the mobile device 200 has fallen based on the weighing information fed back by the weighing sensor 11, the host computer 100 will control the electric reel to wind up the cable to lift the mobile device 200. When the height of the mobile device 200 is higher than the height of the test platform 1, the host computer 100 will send a return control command to the first conveyor line 31. The first conveyor line 31 will control the cable reel 32 to lift the mobile device 200 back to the starting position so that the performance test of the IR sensor of the mobile device 200 can be carried out in the next round.

[0101] In some embodiments, such as Figure 5 As shown, there are multiple first conveyor lines 31 and multiple winding devices 32. The multiple first conveyor lines 31 and multiple winding devices 32 are arranged opposite to each other. The multiple winding devices 32 cooperate to control the placement posture of the mobile device 200 during the lifting process.

[0102] Specifically, there are two of each first conveyor line 31 and cable reel 32, that is, one cable reel 32 is provided on each first conveyor line 31. The two cable reels 32 are arranged side by side along a first direction, which is perpendicular to the direction from the starting position to the ending position. The cable of one cable reel 32 can be connected to the left side of the mobile device 200, and the cable of the other cable reel 32 can be connected to the right side of the mobile device 200. In this way, based on the hoisting effect of the two cable reels 32, it can be ensured that the placement posture of the mobile device 200 during the lifting process is maintained along the direction from the starting position to the ending position.

[0103] Of course, to further ensure the stability of the mobile device 200 during the lifting and lowering process, the number of reels 32 can be set to more than two, which will not be elaborated here.

[0104] In some embodiments, such as Figure 2 and Figure 3 As shown, the test platform 1 also includes: a base plate 13 and a circuit board 14; the base plate 13 is located on the lower side of the color plate 12, and the base plate 13 has a receiving cavity in which the weighing sensor 11 is disposed;

[0105] Circuit board 14 is disposed in the receiving cavity. Rangefinder 21 and weighing sensor 11 are respectively connected to circuit board 14 for communication. Circuit board 14 is also connected to host computer 100 for communication.

[0106] It is understood that the color plate 12 and the base plate 13 are stacked from bottom to top, and the surface of the base plate 13 facing the color plate 12 is provided with a groove, which and the bottom surface of the color plate 12 enclose each other to form a receiving cavity.

[0107] In practical applications, the bottom surface of the color plate 12 and the top surface of the base plate 13 do not contact each other. The upper end of the weighing sensor 11 abuts against the bottom surface of the color plate 12, and the lower end of the weighing sensor 11 abuts against the bottom of the groove. Multiple weighing sensors 11 can be set to accurately detect the weight of the color plate 12 and the load on it based on multiple weighing sensors 11.

[0108] Meanwhile, the circuit board 14 can be a printed circuit board (PCB). The circuit board 14 integrates a microprocessor and a communication interface electrically connected to the microprocessor. The rangefinder 21 and the weighing sensor 11 are electrically connected to the microprocessor, and the microprocessor is electrically connected to the drive mechanism 23 and the transfer component 3 corresponding to the test component 2. The communication interface is connected to the host computer 100.

[0109] In some embodiments, such as Figure 1 and Figure 3 As shown, the test platform 1 also includes a baffle 15, which extends circumferentially along the base plate 13 and is located on the base plate 13 on other sides except for the endpoint position.

[0110] It is understandable that by setting up baffles 15 around the test platform 1, the mobile device 200 on the test platform 1 can be blocked by the baffles 15, preventing the mobile device 200 from falling off the test platform 1.

[0111] The test platform 1 includes a first side, a second side, a third side, and a fourth side. The first side and the third side are parallel to each other and are arranged opposite each other. The second side and the fourth side are parallel to each other and are arranged opposite each other. The starting position is located near the first side, and the ending position is located near the third side. Baffles 15 are provided on the first side, the second side, and the fourth side of the test platform 1.

[0112] In some embodiments, such as Figure 4 As shown, when performing performance testing on the IR sensor of the mobile device 200, in order to facilitate the testing personnel to observe the distance between the mobile device 200 and the obstacle 22, the test platform 1 is also equipped with a scale mark 101, which is set on the baffle 15 extending from the starting position to the ending position.

[0113] In some embodiments, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the sensor performance testing device also includes: a visual acquisition component 4, which is connected to the host computer 100 and is used to acquire the attitude information of the mobile device 200 moving on the test platform 1.

[0114] The host computer 100 is used to control the mobile device 200 to move along the direction from the starting position to the ending position based on the posture information fed back by the vision acquisition component 4.

[0115] Specifically, the visual acquisition component 4 acquires image information of the mobile device 200 through the camera module 42, and processes the image information of the mobile device 200 according to the image recognition algorithm known in the art to determine the posture information of the mobile device 200 moving on the test platform 1. When it is determined that the moving direction of the mobile device 200 deviates from the direction from the starting position to the ending position, the mobile device 200 can be controlled to perform posture correction according to the deviation angle of the moving direction of the mobile device 200 from the starting position to the ending position to ensure that the mobile device 200 moves along the direction from the starting position to the ending position.

[0116] like Figure 6 As shown, Figure 6 This illustrates how mobile device 200 moves on test platform 1 in states Y1 and Y2, respectively. Figure 6 Arrows are used to indicate the direction from the starting point to the ending point, and Figure 6 The diagram also illustrates the two endpoints of a length side extending along the direction of movement of the mobile device 200, namely points a and b, and the length of the length side is L.

[0117] When the mobile device 200 is in state Y1, the direction of movement of the mobile device 200 is from the starting position to the ending position. At this time, the distances of points a and b on the mobile device 200 relative to the side of the test platform 1 are equal, and both are X1.

[0118] When the mobile device 200 is in state Y2, its movement direction deviates from the direction from the starting position to the ending position. At this time, the distances of points a and b on the mobile device 200 relative to the side of the test platform 1 are not equal. The distance of point a relative to the side of the test platform 1 is X2, and the distance of point b relative to the side of the test platform 1 is X3. At this time, according to... Figure 6 It can be seen that the deviation angle of the moving direction of the mobile device 200 relative to the direction from the starting position to the ending position is... .

[0119] Thus, when the movement direction of the mobile device 200 deviates, the host computer 100 can control the mobile device 200 to perform attitude correction according to the deviation angle α, so as to ensure that the mobile device 200 moves in the direction from the starting position to the ending position.

[0120] In some embodiments, such as Figure 2 , Figure 4 and Figure 5As shown, the visual acquisition component 4 includes: a second conveyor line 41 and a camera module 42;

[0121] The second conveyor line 41 is located on the upper side of the test platform 1 and extends from the starting point to the ending point. The camera module 42 is connected to the second conveyor line 41 and is used to collect image information from the mobile device 200. The second conveyor line 41 and the camera module 42 are respectively connected to the host computer 100 for communication.

[0122] Understandably, the second conveyor line 41 can be a linear module or a chain conveyor line, and the camera module 42 can be a high-speed camera.

[0123] In practical applications, during the movement of the mobile device 200, the host computer 100 is configured to control the second conveyor line 41 at the same speed to drive the camera module 42 to follow the movement of the mobile device 200, so as to ensure that the camera module 42 is always located directly above the mobile device 200 and to collect the top view image of the mobile device 200, so as to accurately obtain the attitude information of the test platform 1 based on the top view image of the mobile device 200.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sensor performance testing device, characterized in that, include: The testing platform, with a start and end point, is used to support mobile devices. The host computer is configured to communicate with the mobile device, configure the collision avoidance distance of the TOF sensor of the mobile device, and control the mobile device to move back and forth between the starting position and the ending position; The testing component includes an obstacle and a rangefinder. The obstacle is located at the endpoint, and the rangefinder is mounted on the obstacle and communicates with the host computer. The rangefinder is used to detect the distance information between the mobile device and the obstacle when the mobile device stops. The host computer is used to determine the performance indicators of the TOF sensor based on the comparison between the distance information collected by the rangefinder and the collision avoidance distance.

2. The sensor performance testing device according to claim 1, characterized in that, The host computer is used to output a test result indicating test failure when the difference between the distance information and the collision avoidance distance is greater than a preset error, and to output a test result indicating test success when the difference between the distance information and the collision avoidance distance is not greater than the preset error.

3. The sensor performance testing device according to claim 2, characterized in that, The obstacle is movably disposed on the test platform, the test platform comprising: A color swatch, used to carry the mobile device, and configured to be recognizable by the IR sensor of the mobile device, wherein the endpoint is located at the edge of the color swatch; A weighing sensor is located on the lower side of the color plate and is communicatively connected to the host computer. The host computer is used to determine whether the mobile device has fallen from the color plate based on the weighing information fed back by the weighing sensor, and to determine the performance indicators of the IR sensor based on the drop test results of the mobile device.

4. The sensor performance testing device according to claim 3, characterized in that, The testing components also include: A drive mechanism connected to the obstacle to drive the obstacle to switch between a first state and a second state; When the obstacle is in the first state, the obstacle is at the endpoint position; when the obstacle is in the second state, the obstacle is away from the endpoint position.

5. The sensor performance testing device according to claim 4, characterized in that, The obstacle is a hook, and the driving mechanism includes a drive motor. The drive motor is connected to the hook to drive the hook to rotate and switch between the first state and the second state. When the hook is in the first state, the hook is located on the upper side of the color plate; When the hook is in the second state, the hook is located under the color plate to catch the mobile device that falls from the color plate.

6. The sensor performance testing device according to claim 3, characterized in that, Also includes: A transfer component, which is communicatively connected to the host computer; The host computer is used to control the transfer component to transfer the fallen mobile device onto the color plate when it is determined that the mobile device has fallen from the color plate.

7. The sensor performance testing device according to claim 6, characterized in that, The transfer assembly includes: The first conveyor line is located on the upper side of the test platform and extends in the direction from the starting position to the ending position; A reel, which is connected to the first conveyor line and to the mobile device, to control the lifting and lowering of the mobile device; The first conveyor line and the winding device are respectively connected to the host computer for communication.

8. The sensor performance testing device according to claim 7, characterized in that, Multiple first conveyor lines and multiple winding devices are provided, and the multiple first conveyor lines and multiple winding devices are arranged opposite to each other. The multiple winding devices cooperate to control the placement posture of the mobile device during the lifting and lowering process.

9. The sensor performance testing device according to claim 3, characterized in that, The testing platform also includes: A base plate is disposed on the lower side of the color plate, the base plate having a receiving cavity, and the weighing sensor is disposed in the receiving cavity; A circuit board is disposed in the receiving cavity. The rangefinder and the weighing sensor are respectively communicatively connected to the circuit board, and the circuit board is communicatively connected to the host computer.

10. The sensor performance testing device according to claim 9, characterized in that, The testing platform also includes: A baffle extends circumferentially along the base plate and is located on the base plate on other sides except for the endpoint.

11. The sensor performance testing device according to claim 10, characterized in that, The testing platform also includes: A scale marking is provided on the baffle extending from the starting position to the ending position.

12. The sensor performance testing apparatus according to any one of claims 1 to 11, characterized in that, Also includes: A visual acquisition component, which is communicatively connected to the host computer, is used to acquire the posture information of the mobile device moving on the test platform. The host computer is used to control the mobile device to move along the extension direction from the starting position to the ending position based on the posture information fed back by the vision acquisition component.

13. The sensor performance testing device according to claim 12, characterized in that, The visual acquisition component includes: The second conveyor line is located on the upper side of the test platform and extends in the direction from the starting position to the ending position; A camera module is connected to the second conveyor line, and the camera module is used to acquire image information of the mobile device; The second conveyor line and the camera module are respectively connected to the host computer for communication.

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