A test fixture

Abstract

This application discloses a testing fixture for testing a sleep monitoring device. The sleep monitoring device has a detection unit equipped with a physiological signal sensor. This physiological signal sensor is used to collect physiological signals by capturing pressure generated by physiological activity. The testing fixture includes: a signal generating unit comprising: a motor with a rotor shaft for outputting motor power; a mass block connected to the rotor shaft, with the center of mass eccentrically positioned relative to the axis of the rotor shaft to generate simulated physiological signals when the rotor shaft rotates; and a signal transmission assembly comprising: a support base for supporting the detection unit; and a pressure plate rigidly connected to the motor, with the plane of the pressure plate not parallel to the plane of motion of the mass block. The pressure plate is configured to abut against the detection unit and contact the physiological signal sensor of the detection unit to transmit simulated physiological signals to the detection unit. This testing fixture can test the accuracy of the output of the sleep monitoring device.

Description

Technical Field

[0001] This application relates to the field of automated testing, and more particularly to a testing fixture. Background Technology

[0002] To achieve sleep quality monitoring, smart mattresses typically incorporate a sleep monitoring device that detects the heart rate and breathing of the person lying on the mattress. This device consists of a detection unit and a processing unit. The detection unit uses a piezoelectric ceramic sensor embedded in its core to collect physiological signals such as heart rate and breathing. The processing unit then optimizes and processes the collected data before outputting the results, thus enabling the detection of heart rate and breathing.

[0003] During the production process, the performance of sleep monitoring devices may fluctuate due to factors such as materials and processes, leading to inaccurate test results. Therefore, before leaving the factory, it is necessary to test the accuracy of the sleep monitoring device's test results using specialized testing equipment. Utility Model Content

[0004] This application discloses a testing fixture that can test the accuracy of the detection results of a sleep monitoring device.

[0005] To achieve the above objectives, this application discloses a testing fixture for testing a sleep monitoring device. The sleep monitoring device has a detection unit, which is equipped with a physiological signal sensor. The physiological signal sensor is used to collect physiological signals by capturing pressure generated by physiological activities. The testing fixture includes:

[0006] The signal generating unit includes:

[0007] An electric motor having a rotor shaft for outputting the power of the motor;

[0008] A mass block, the mass block being connected to the rotor shaft, and the center of mass of the mass block being eccentrically positioned relative to the axis of the rotor shaft, so as to generate simulated physiological signals when the rotor shaft rotates;

[0009] Signal transmission components, including:

[0010] A support base is used to support the detection unit;

[0011] A pressure plate is rigidly connected to the motor, and the plane of the pressure plate is not parallel to the plane of motion of the mass block. The pressure plate is configured to abut against the detection unit and contact the physiological signal sensor of the detection unit to transmit the simulated physiological signal to the detection unit.

[0012] Optionally, the axial direction of the rotor shaft and the plane where the pressure plate is located both extend in the horizontal direction, and the support base is supported below the detection part.

[0013] Optionally, a silicone pad is provided on the surface of the pressure plate facing the detection part, and the silicone pad is correspondingly arranged with the physiological signal sensor for contact with the corresponding physiological signal sensor; or

[0014] The surface of the pressure plate facing the detection part is covered with a flexible material.

[0015] Optionally, the signal transmission component further includes:

[0016] A telescopic rod is connected between the pressure plate and the support base, which is used to make the pressure plate have an adjustable position in the vertical direction.

[0017] Optionally, the signal transmission assembly includes a plurality of telescopic rods configured to surround the horizontal periphery of the detection unit, and the plurality of telescopic rods are symmetrically arranged.

[0018] Optionally, the telescopic rod is a pneumatic telescopic rod, and the signal transmission component further includes:

[0019] A pressure regulating valve is connected to the air pressure chamber of the pneumatic telescopic rod and is used to control the air source pressure of the pneumatic telescopic rod.

[0020] A pressure gauge, connected to the air pressure chamber of the pneumatic telescopic rod, is used to display the air source pressure of the pneumatic telescopic rod.

[0021] Optionally, the upper surface of the support base is provided with a limiting strip, which surrounds the outer side of each side of the detection part.

[0022] Optionally, the projection of the center of mass of the mass block onto the surface of the pressure plate in the vertical direction is located at the center of the pressure plate.

[0023] Optionally, the test fixture further includes:

[0024] A control button is disposed on the support base and electrically connected to the signal generating unit to control the operating state of the signal generating unit; wherein, the control button includes:

[0025] A start button, used to activate the signal generating unit when pressed; and / or,

[0026] An emergency stop button is used to stop the operation of the signal generating unit when pressed; and / or,

[0027] Output adjustment buttons are used to input adjustment commands to increase or decrease the speed of the motor.

[0028] Optionally, the start button includes a first start button and a second start button, used to start the signal generating unit when the first start button and the second start button are pressed simultaneously.

[0029] Compared with the prior art, the beneficial effects of this application are at least as follows:

[0030] The testing fixture provided in this application embodiment, by setting up a signal generation unit and a signal transmission component, can test the accuracy of the detection results of the sleep monitoring device. A mass block is connected to the rotor shaft of the motor in the signal generation unit, and the center of mass of the mass block is eccentrically positioned relative to the axis of the rotor shaft. When the motor starts, the rotor shaft rotates around its axis, causing the mass block to perform circular motion in a plane perpendicular to the rotor shaft. This circular motion generates a centrifugal force perpendicular to the rotor shaft. Because the pressure plate of the signal transmission component is not parallel to the plane in which the mass block performs its circular motion, and because the pressure plate is rigidly connected to the motor, the generated centrifugal force can be transmitted indirectly to the pressure plate, causing it to vibrate. When the motor's rotor shaft rotates at a fixed speed, the mass block performs circular motion, simultaneously generating a periodically changing force that acts on the pressure plate, causing it to vibrate. This periodically changing force can simulate physiological signals, such as the signals received by the sleep monitoring device when simulating physiological activities like heart rate and respiration. By adjusting the motor speed, the frequency of the centrifugal force change can be controlled, thus controlling the frequency of the simulated physiological signals. The sleep monitoring device collects simulated physiological signals through a detection unit on a support base supported by the signal transmission component, and finally outputs the detection results. By comparing the value of the motor speed with the frequency value detected by the sleep monitoring device for the simulated physiological signals of the motor, the accuracy of the sleep monitoring device's detection results can be tested. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a top view of a sleep monitoring device in related technologies;

[0033] Figure 2 A side view of a test fixture according to an embodiment of this application;

[0034] Figure 3 This is a schematic diagram of another test fixture according to an embodiment of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100 - Sleep monitoring device; 110 - Detection unit; 111 - Physiological signal sensor; 120 - Processing unit;

[0037] 200 - Test fixture; 210 - Signal generation unit; 211 - Motor; 2111 - Rotor shaft; 212 - Mass block;

[0038] 220 - Signal transmission component; 221 - Support base; 2211 - Limiting strip; 222 - Pressure plate; 2221 - Silicone pad; 223 - Telescopic rod; 224 - Pressure regulating valve; 225 - Pressure gauge; 23 - Control button. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0040] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0041] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0042] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0043] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0044] To enable sleep quality monitoring, smart mattresses typically include a sleep monitoring device that can detect the heart rate and breathing of the person lying on the mattress. For example... Figure 1 The image shows a top view of a sleep monitoring device 100. The sleep monitoring device 100 includes a detection unit 110 and a processing unit 120. The detection unit 110 collects physiological signals such as heart rate and respiration from a person lying on a mattress, and the processing unit 120 performs a series of optimization processes on the collected signals, including filtering, amplification, and digitization. Finally, the processed information, such as frequency and amplitude, is output as the detection result.

[0045] The detection unit 110 is equipped with 223 physiological signal sensors 111. These sensors collect physiological signals by capturing the periodic pressure changes experienced by the mattress during heartbeats or respiration. The physiological signal sensors 111 can be various types of pressure-sensitive sensors, such as piezoelectric ceramic sensors, capacitive sensors, strain gauge pressure sensors, and flexible piezoelectric polymer sensors. The number and shape of the physiological signal sensors 111 can be specifically configured according to actual needs and sensor types. For example, the physiological signal sensor 111 can be a single rectangular flexible piezoelectric polymer sensor, or it can be... Figure 1 The diagram shows several circular piezoelectric ceramic sensors. When the number of physiological signal sensors 111 is greater than one, these physiological signal sensors 111 can be arranged in parallel, or in series, or in a hybrid arrangement combining parallel and series connections.

[0046] The arithmetic unit 120 can be a central processing unit (CPU), a field-programmable gate array (FPGA), an application-specific integrated circuit (ASIC), or other chips and components with computing and data processing capabilities.

[0047] During the production of the sleep monitoring device 100, factors such as materials and processes can cause fluctuations in product performance, and may even lead to inaccurate data from individual products. Therefore, before leaving the factory, it is necessary to test the accuracy of the sleep monitoring device 100 in detecting physiological signals such as heart rate or respiration.

[0048] like Figure 2 The diagram shows a test fixture 200 for testing a sleep monitoring device 100 according to an embodiment of this application. The test fixture 200 includes a signal generation unit 210 and a signal transmission component 220. The signal generation unit 210 is used to generate simulated physiological signals, and the signal transmission component 220 is used to transmit the simulated physiological signals generated by the signal generation unit 210 to the detection unit 110 of the sleep monitoring device 100 to be tested.

[0049] The signal generating unit 210 includes a motor 211 having a rotor shaft 2111 for outputting power to the motor 211; and a mass block 212 connected to the rotor shaft 2111, with the center of mass of the mass block 212 eccentrically positioned relative to the axis of the rotor shaft 2111 to generate simulated physiological signals when the rotor shaft 2111 rotates.

[0050] The signal transmission assembly 220 includes a support base 221 for supporting the detection unit 110; and a pressure plate 222, which is rigidly connected to the motor 211, and the plane of the pressure plate 222 is not parallel to the motion plane of the mass block 212. The pressure plate 222 is configured to abut against the detection unit 110 and contact the physiological signal sensor 111 of the detection unit 110 to transmit simulated physiological signals to the detection unit 110.

[0051] Specifically, the motor 211 can be any type of motor, such as a DC motor, AC motor, or stepper motor, as long as its output power is sufficient to drive the rotor shaft 2111 to rotate at a speed range that covers the range of human heart rate and respiratory rate. For example, the rotor shaft 2111 can be driven to rotate at a speed of 5 RPM (Revolutions Per Minute) to 120 RPM. The mass block 212 is connected to the rotor shaft 2111, and the connection between the two can be rigid or flexible. For example, the mass block 212 can be fixed to the rotor shaft 2111, or it can be connected to a fixed position on the rotor shaft 2111 via a metal cable. The mass block 212 can be any shape, such as square or spherical. The weight of the mass block 212 and the distance between the center of mass of the mass block 212 and the rotor shaft 2111 affect the amplitude of the generated simulated physiological signal. Therefore, the weight and distance can be set accordingly based on the actual situation. As an optional implementation, the mass block 212 can be connected to the rotor shaft 2111 using an adjustable eccentricity. As another optional implementation, the mass block 212 can also be connected to the rotor shaft 2111 in a modular and detachable manner, for example, by using an electromagnetic chuck, flange, and locating pin, so as to replace the mass block 212 and adjust its weight.

[0052] The pressure plate 222 is rigidly connected to the motor 211. The connection can be direct, such as welding the pressure plate 222 to the motor 211, or indirect, such as connecting the pressure plate 222 to the motor 211 via a flange or other connector. There are no specific restrictions on the positional relationship between the pressure plate 222 and the signal generating unit 210, as long as the plane of motion of the pressure plate 222 and the mass block 212 are not parallel, so that the centrifugal force generated by the circular motion of the mass block 212 can indirectly act on the pressure plate 222, causing it to vibrate. The plane of motion is the plane on which the mass block 212 moves in a circular motion under the drive of the rotor shaft 2111, and this plane of motion is perpendicular to the rotor shaft 2111.

[0053] In one optional embodiment, the pressure plate 222 can be arranged parallel to the rotor shaft 2111 of the motor 211, at an acute angle to the rotor shaft 2111, or at an obtuse angle to the rotor shaft 2111. The shape of the pressure plate 222 can be square, circular, or other shapes. The size of the pressure plate 222 can be larger than the detection unit 110, smaller than the detection unit 110, or exactly cover the detection unit 110. There are no specific limitations on the shape and size of the pressure plate 222, as long as it can contact the physiological signal sensor 111 on the detection unit 110, allowing the vibration of the pressure plate 222 to be transmitted to the physiological signal sensor 111 of the detection unit 110.

[0054] The support base 221 supports the detection unit 110, providing stable support so that the pressure plate 222 can abut against the detection unit 110. The support base 221 can be a support platform, allowing the detection unit 110 to be horizontally supported on the platform, or it can be a support bracket, allowing the detection unit 110 to be stably supported on the platform at a specific angle. The support base 221 can be configured as a support platform or support bracket, depending on the angle of the pressure plate 222, and no specific limitations are imposed here.

[0055] In practical applications, when motor 211 starts, the rotor shaft 2111 of motor 211 rotates around its axis at a certain speed, driving the mass block 212 to perform uniform circular motion in a plane perpendicular to the rotor shaft 2111, and generating a periodic force on the pressure plate 222, i.e., simulating a physiological signal. The simulated physiological signal generated per minute by the signal generation unit 210 can be the same as the number of revolutions per minute of motor 211. The simulated physiological signal is transmitted through the pressure plate 222 to the detection unit 110 of the sleep monitoring device 100, and is collected by the physiological signal sensor 111 of the detection unit 110. The sleep monitoring device 100 optimizes and calculates the collected data through the processing unit 120, and finally outputs the detected frequency information and other results. By comparing the rotational speed of motor 211, i.e., the frequency value of the simulated physiological signal, with the frequency value of the detection result, the accuracy of the detection result of the sleep monitoring device 100 can be determined.

[0056] Specifically, when testing the accuracy of the respiratory rate detection results of the sleep monitoring device 100, a judgment can be made according to certain rules. For example, several motor speeds can be set within a certain speed range of the motor 211 as test motor speeds. This speed range, for example, can be 5 RPM to 20 RPM. The test motor speeds can be set to 5 RPM, 10 RPM, and 20 RPM respectively, or other numbers and values ​​can be set; no specific restrictions are placed here. After selecting a suitable test motor speed, for each test motor speed, the frequency of the simulated physiological signal is detected by the sleep monitoring device 100 within a fixed sampling period, and this detection is repeated multiple times.

[0057] For example, using a one-minute sampling period, the frequency of the simulated physiological signal is detected. If the detected output differs from the frequency of the simulated physiological signal (i.e., the number of revolutions per minute of motor 211) by no more than ±3%, the detection is considered accurate. If the accuracy rate exceeds 95% after multiple repeated tests, the detection result of the sleep monitoring device 100 regarding respiratory rate is confirmed to be accurate; otherwise, the detection result of the sleep monitoring device 100 regarding respiratory rate is confirmed to be inaccurate. In the example of the above test rules, the judgment criteria can be set to other values ​​according to the actual situation, and other rules can be adopted to confirm whether the detection result of the sleep monitoring device 100 regarding respiratory rate is accurate. No specific restrictions are imposed here.

[0058] Similarly, when testing the accuracy of the heart rate detection results by the sleep monitoring device 100, a similar rule can be applied. For example, several click speeds can be set within a certain speed range of the motor 211 as test motor speeds. This speed range, for example, can be from 30 RPM to 110 RPM. In this case, the test motor speeds can be set to 50 RPM, 60 RPM, 70 RPM, or other values; no specific restrictions are placed here. After selecting a suitable test motor speed, for each test motor speed, the frequency of simulated physiological signals is detected by the sleep monitoring device 100 within a fixed sampling period, and this detection is repeated multiple times.

[0059] For example, using a one-minute sampling period, the frequency of the simulated physiological signal is detected. If the detected output differs from the frequency of the simulated physiological signal (i.e., the number of revolutions per minute of motor 211) by no more than ±5%, the detection is considered accurate. If the accuracy rate exceeds 98% after multiple repeated tests, the sleep monitoring device 100's heart rate detection result is confirmed to be accurate; otherwise, the sleep monitoring device 100's heart rate detection result is confirmed to be inaccurate. Similarly, in the example of the above test rules, other values ​​can be set according to actual conditions, and other rules can be adopted to confirm whether the sleep monitoring device 100's heart rate detection result is accurate; no specific restrictions are imposed here.

[0060] In the embodiments of this application, a mass block 212 is connected to the rotor shaft 2111 of the motor 211, and the center of mass of the mass block 212 is eccentrically positioned relative to the axis of the rotor shaft 2111. When the motor 211 starts, the rotor shaft 2111 rotates around its axis, causing the mass block 212 to perform circular motion in a plane perpendicular to the rotor shaft 2111. The circular motion of the mass block 212 generates a centrifugal force perpendicular to the rotor shaft 2111. Since the pressure plate 222 of the signal transmission component 220 is not parallel to the plane in which the mass block 212 performs circular motion, and the pressure plate 222 is rigidly connected to the motor 211, the generated centrifugal force can indirectly act on the pressure plate 222, causing the pressure plate 222 to vibrate. When the motor 211 rotates at a fixed speed, the mass block 212 performs uniform circular motion, simultaneously generating a periodically changing force that acts on the pressure plate 222, causing the pressure plate 222 to vibrate. This periodically changing force, i.e., the simulated physiological signal, can simulate the signals received by the sleep monitoring device 100 during physiological activities such as heart rate and respiration. By adjusting the rotational speed of the motor 211, the frequency of the centrifugal force change can be controlled, which in turn controls the frequency of the simulated physiological signal. The sleep monitoring device 100 receives the simulated physiological signal transmitted by the pressure plate 222 through the detection unit 110 supported on the support base 221 of the signal transmission component 220, collects the simulated physiological signal, and finally outputs the detection result. By comparing the value of the rotational speed of the motor 211 with the value of the frequency of the simulated physiological signal generated by the motor 211 detected and output by the sleep monitoring device 100, the accuracy of the detection result of the sleep monitoring device 100 can be tested.

[0061] In order to make the centrifugal force generated by the mass block 212 in the circular motion act more directly on the pressure plate 222 and generate the maximum force transmission, the pressure plate 222 can be set to be perpendicular to the plane in which the mass block 212 is in the circular motion, that is, the plane in which the pressure plate 222 is located is parallel to the axial direction of the rotor shaft 2111.

[0062] Optional, such as Figure 3As shown, in the test fixture 200 according to the embodiment of this application, the axial direction of the rotor shaft 2111 and the plane where the pressure plate 222 is located both extend in the horizontal direction, and the support base 221 is supported below the detection unit 110.

[0063] In the above embodiment, the support base 221 is supported below the detection unit 110. During detection, the pressure plate 222 covers the detection unit 110 on the support base 221 to achieve contact with the detection unit 110. The motor 211 is mounted on the pressure plate 222 and rigidly connected to it.

[0064] By setting the axial direction of the rotor shaft 2111 and the plane where the pressure plate 222 is located to extend in the same direction, the centrifugal force generated when the mass block 212 makes circular motion is transmitted to the pressure plate 222 more directly and effectively, reducing energy loss and improving the quality of simulated physiological signals. Furthermore, since both extend in the horizontal direction, the detection unit 110 is located on the horizontal plane, so that the support base 221 can be supported below the detection unit 110. This can not only help maintain the stability of the testing unit, but also ensure that the weight of the pressure plate 222 and its connecting objects is fully applied to the detection unit 110, which facilitates full contact between the pressure plate 222 and the physiological signal sensor 111 and improves the transmission efficiency of simulated physiological signals.

[0065] Since the silver paste layer coated on the positive electrode plate of the detection unit 110 exposed to the physiological signal sensor 111 has low hardness, it is necessary to protect the physiological signal sensor 111 from damage when the pressure plate 222 comes into contact with the physiological signal sensor 111 of the detection unit 110.

[0066] Optional, such as Figure 3 As shown, a silicone pad 2221 is provided on the surface of the pressure plate 222 facing the detection part 110. The silicone pad 2221 is provided in correspondence with the physiological signal sensor 111 and is used to contact the corresponding physiological signal sensor 111; or the surface of the pressure plate 222 facing the detection part 110 is covered with a flexible material.

[0067] The shape and size of the silicone pad 2221 can be set to just completely cover the surface of the physiological signal sensor 111 exposed to the detection part 110, or it can be set to other shapes, as long as the silicone pad 2221 fully covers the contact area between the pressure plate 222 and the physiological signal sensor 111. Additionally, a flexible material can be covered on the surface of the pressure plate 222. There are no specific limitations on the size of the flexible material, as long as it can cover the entire surface of the physiological signal sensor 111. This flexible material can be silicone, polyimide film, fluororubber, etc. The thickness of the silicone pad 2221 and the flexible material can be selected according to the actual situation, but care should be taken to avoid excessive energy loss of the simulated physiological signal due to excessive thickness of the silicone pad 2221 or the flexible material.

[0068] By providing a silicone pad 2221 corresponding to the physiological signal sensor 111 on the surface of the pressure plate 222 facing the detection part 110, or by covering the surface of the pressure plate 222 facing the detection part 110 with a flexible material, the silver paste layer exposed to the physiological signal sensor 111 can be protected from wear or damage during testing, thereby extending the service life of the sleep monitoring device 100.

[0069] Optionally, to facilitate adjustment of the vertical position of the pressure plate 222, such as... Figure 3 In the test fixture 200 according to the embodiment of this application, the signal transmission component 220 further includes a telescopic rod 223, which is connected between the pressure plate 222 and the support base 221, and is used to make the pressure plate 222 have an adjustable position in the vertical direction.

[0070] The load-bearing capacity of the telescopic rod 223 should be sufficient to support the pressure plate 222 and the motor 211 and mass block 212 connected above the pressure plate 222. The stroke of the telescopic rod 223 should ensure that the pressure plate 222 remains in contact with the physiological signal sensor 111 when the telescopic rod 223 is retracted; and that the detection unit 110 can be easily removed from the support base 221 or placed on the support base 221 when the telescopic rod 223 is extended. The selection of the telescopic rod 223 can be determined according to the actual situation, and no specific restrictions are imposed here.

[0071] The telescopic rod 223 connected to the pressure plate 222 and the support base 221 facilitates the replacement of the sleep monitor under test. At the same time, the telescopic rod 223 can support the pressure plate 222, preventing the weight of the pressure plate 222 and its connected parts from pressing on the detection unit 110 and causing damage to the sleep monitoring device 100.

[0072] Optionally, the signal transmission assembly 220 includes a plurality of telescopic rods 223, which are configured to surround the horizontal periphery of the detection unit 110, wherein the plurality of telescopic rods 223 are symmetrically arranged.

[0073] Specifically, the telescopic rods 223 can be configured in quantities of 2, 4, or similar numbers. Multiple telescopic rods 223 can be arranged on a pair of opposite sides of the pressure plate 222, or separately on two pairs of opposite sides of the pressure plate 222. The symmetrical arrangement of multiple telescopic rods 223 can distribute the load of each rod 223, while simultaneously ensuring the stability of the pressure plate 222 during vertical movement.

[0074] Optionally, for easier and smoother operation, the telescopic rod 223 can be a pneumatic telescopic rod. The signal transmission component 220 also includes: a pressure regulating valve 224, which is connected to the pneumatic chamber of the pneumatic telescopic rod and is used to control the air source pressure of the pneumatic telescopic rod; and a pressure gauge 225, which is connected to the pneumatic chamber of the pneumatic telescopic rod and is used to display the air source pressure of the pneumatic telescopic rod.

[0075] Specifically, the pressure regulating valve 224 and the pressure gauge can be installed on the support base 221 or at other locations outside the support base 221. The pressure regulating valve 224 can be in various forms, such as a knob or a button. To facilitate the synchronous control of multiple pneumatic telescopic rods, the pressure regulating valve 224 can adjust all the pneumatic telescopic rods simultaneously.

[0076] By setting the pressure regulating valve 224 and the pressure gauge 225, the speed of the pneumatic telescopic rod's extension and retraction can be adjusted. At the same time, when the pressure plate 222 comes into contact with the physiological signal sensor 111, the magnitude of the force exerted by the pressure plate 222 on the detection unit 110 can be adjusted by adjusting the pressure regulating valve 224, thereby protecting the detection unit 110 from damage and ensuring that the simulated physiological signal is transmitted to the detection unit 110 more effectively.

[0077] In other alternative implementations, besides pneumatic actuation, the telescopic rod can also employ other suitable actuation methods depending on the actual situation, such as electric drive, hydraulic drive, or mechanical spring drive; no specific limitations are imposed here. Furthermore, the signal transmission component 220 can be equipped with corresponding regulating valves and drive monitoring devices according to the actuation method of the telescopic rod.

[0078] In actual testing, when changing the sleep monitoring device 100 under test, it is difficult to ensure that the detection part 110 of the sleep monitoring device 100 is placed in the same position on the support base 221 each time. This may result in insufficient contact between the pressure plate 222 and the detection part 110, or the silicone pad 2221 failing to cover the physiological signal sensor 111. Therefore, a limiting mechanism is needed to ensure that the detection part 110 of the sleep monitoring device 100 is placed in the same position on the support base 221 each time.

[0079] Optional, such as Figure 3 As described above, in the test fixture 200 according to the embodiment of this application, a limiting strip 2211 is provided on the upper surface of the support base 221, and the limiting strip 2211 surrounds the outer side of each side of the detection part 110.

[0080] The number of limiting strips 2211 can be one, that is, an L-shaped limiting strip 2211 is used to surround the outer sides of the two adjacent sides of the detection part 110. The number of limiting strips 2211 can be two, respectively set on the outer sides of the two adjacent sides of the detection part 110 to limit the detection part 110; the number of limiting strips 2211 can also be more than two, and the additional limiting strips 2211 can be set on the outer sides of other sides of the detection part 110. By setting the limiting strips 2211, it can be ensured that the detection part 110 of the sleep monitoring device 100 under test is placed in the same position on the support base 221 in each test, avoiding inaccurate alignment of the pressure plate 222 and the detection part 110, inaccurate measurement, or damage to the sleep monitoring device 100.

[0081] In other embodiments, the limiting mechanism may also be configured as a limiting groove on the support base 221 or other forms, and no specific restrictions are imposed here.

[0082] Optionally, in order to transmit the simulated physiological signals more evenly to each physiological signal sensor 111 through the pressure plate 222, such as Figure 3 As shown, the projection of the center of mass of mass block 212 onto the surface of pressure plate 222 along the vertical direction is located at the center of pressure plate 222.

[0083] Optional, such as Figure 3 As shown, in order to facilitate the control and adjustment of the output of the test fixture 200, the test fixture 200 also includes a control button 23, which is set on the support base 221, and the control button 23 is electrically connected to the signal generation unit 210 to control the operating status of the signal generation unit 210.

[0084] In other embodiments, the control buttons 23 may also be located at other positions outside the support base 221. Furthermore, some control buttons 23 may be configured as other forms of control elements, such as control knobs. The position and form of the control elements can be specifically configured according to actual conditions and are not limited here.

[0085] The control button 23 may include, but is not limited to, the following buttons: a start button, used to start the signal generating unit 210 when pressed; and / or an emergency stop button, used to stop the operation of the signal generating unit 210 when pressed; and / or an output adjustment button, used to input adjustment commands to increase or decrease the speed of the motor 211.

[0086] The signal generating unit can be activated by the start button, i.e., the motor 211 can be started, causing the rotor shaft 2111 to drive the mass block 212 in uniform circular motion and generate simulated physiological signals. The emergency stop button can quickly stop the operation of the signal generating unit. Specifically, the emergency stop button can stop the operation of the motor 211, or it can also actively brake to eliminate rotational inertia depending on the type of motor 211. Optionally, different buttons can be set to stop the operation of the signal generating unit 210 depending on whether active braking to eliminate inertia is used. The output adjustment buttons can be set to speed-up buttons for inputting commands to increase the speed of the motor 211 and speed-down buttons for inputting commands to decrease the speed of the motor 211; they can also be set to switch between different motor speeds. In other embodiments, the output adjustment buttons can also be set to knobs or other forms, which are not specifically limited here.

[0087] Optionally, to prevent accidental activation of the start signal generating unit 210 and potential danger, the start button includes a first start button and a second start button, which are used to activate the start signal generating unit 210 when the first start button and the second start button are pressed simultaneously.

[0088] By configuring the start signal generation unit 210 to start only when both start buttons are pressed simultaneously, it can effectively prevent dangerous situations caused by the motor driving the mass block to rotate after a single start button is accidentally pressed.

[0089] Optionally, the test fixture 200 according to the embodiments of this application may further include a processing unit, which is communicatively connected to the signal generation unit 210 and the sleep monitoring device 100, respectively, for acquiring the rotational speed of the motor 211 and the frequency of the simulated physiological signal detected and output by the sleep monitoring device 100, and determining whether the detection result of the sleep monitoring device 100 is accurate based on certain test rules. Specific test rules can be found in the description above and will not be repeated here.

[0090] By setting up a processing unit in the test fixture 200, the accuracy of the sleep monitoring device 100's detection results can be obtained directly from the test fixture 200 without relying on other external equipment, effectively improving the convenience of the testing process.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A test fixture for testing a sleep monitoring device, the sleep monitoring device having a detection portion provided with a physiological signal sensor for acquiring a physiological signal by capturing pressure resulting from physiological activity, characterized in that, The test fixture includes: The signal generating unit includes: An electric motor having a rotor shaft for outputting the power of the motor; A mass block, the mass block being connected to the rotor shaft, and the center of mass of the mass block being eccentrically positioned relative to the axis of the rotor shaft, so as to generate simulated physiological signals when the rotor shaft rotates; Signal transmission components, including: A support base is used to support the detection unit; A pressure plate is rigidly connected to the motor, and the plane of the pressure plate is not parallel to the plane of motion of the mass block. The pressure plate is configured to abut against the detection unit and contact the physiological signal sensor of the detection unit to transmit the simulated physiological signal to the detection unit.

2. The test fixture according to claim 1, characterized in that, The axial direction of the rotor shaft and the plane where the pressure plate is located both extend horizontally, and the support base is supported below the detection unit.

3. The testing fixture according to claim 2, characterized in that, A silicone pad is provided on the surface of the pressure plate facing the detection part. The silicone pad is correspondingly arranged with the physiological signal sensor and is used to contact the corresponding physiological signal sensor; or The surface of the pressure plate facing the detection part is covered with a flexible material.

4. The testing fixture according to claim 2, characterized in that, The signal transmission component further includes: A telescopic rod is connected between the pressure plate and the support base, which is used to make the pressure plate have an adjustable position in the vertical direction.

5. The testing fixture according to claim 4, characterized in that, The signal transmission assembly includes a plurality of telescopic rods, which are configured to surround the horizontal periphery of the detection unit and are symmetrically arranged.

6. The test fixture according to claim 5, characterized in that, The telescopic rod is a pneumatic telescopic rod, and the signal transmission component further includes: A pressure regulating valve is connected to the air pressure chamber of the pneumatic telescopic rod and is used to control the air source pressure of the pneumatic telescopic rod. A pressure gauge, connected to the air pressure chamber of the pneumatic telescopic rod, is used to display the air source pressure of the pneumatic telescopic rod.

7. The test fixture according to any one of claims 2-6, characterized in that, The upper surface of the support base is provided with a limiting strip, which surrounds the outer side of each side of the detection part.

8. The test fixture according to any one of claims 2-6, characterized in that, The projection of the center of mass of the mass block onto the surface of the pressure plate in the vertical direction is located at the center of the pressure plate.

9. The test fixture according to any one of claims 1-6, characterized in that, Also includes: A control button is disposed on the support base and electrically connected to the signal generating unit to control the operating state of the signal generating unit; wherein, the control button includes: A start button, used to activate the signal generating unit when pressed; and / or, An emergency stop button is used to stop the operation of the signal generating unit when pressed; and / or, Output adjustment buttons are used to input adjustment commands to increase or decrease the speed of the motor.

10. The test fixture according to claim 9, characterized in that, The start button includes a first start button and a second start button, which are used to start the signal generating unit when the first start button and the second start button are pressed at the same time.

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