Multifunctional air mattress rapid detection device and method

Abstract

The application discloses a multifunctional air bed quick detection device and method, the device comprises a cushion tool, a host tool, and a multi-cavity socket; the cushion tool is internally provided with a plurality of small air bags and is connected to different air paths respectively, and is used for simulating a plurality of components of the cushion; the host tool comprises an air pump, a main control panel, a display screen, a plurality of electromagnetic valve groups, and a plurality of pressure sensor groups; the working port of each electromagnetic valve group is connected to a corresponding small air bag; each pressure sensor is integrated on the main control panel and is connected to a corresponding electromagnetic valve group, and is used for detecting a real-time pressure value; and the display screen is used for presenting an inflation pressure curve and a fault judgment result. The application internally provides a micro air bag in the cushion tool to simulate each functional cavity of the bed, integrates the air pump, the valve group, the multi-path sensor and other devices in the host tool, and is used independently, so that it is not necessary to detect the whole air bed as a whole to position whether there is a problem such as a cushion leakage, and the detection period is effectively shortened; meanwhile, the whole size is small and compact, and is convenient for relevant personnel to carry.

Description

Technical Field

[0001] This invention relates to the field of air mattress testing technology, specifically to a multifunctional rapid testing device and method for air mattresses. Background Technology

[0002] The application and promotion of medical air mattresses are becoming increasingly widespread, and their clinical value in preventing, alleviating, and treating pressure injuries and pressure ulcers, as well as in implementing assisted prone ventilation therapy, has been widely recognized.

[0003] With technological improvements in medical air mattresses, the functions of various new types of medical air mattresses have become increasingly complex, integrating multiple functions such as zoned airflow, prone ventilation, and cyclic turning into a single air mattress. However, these new medical air mattresses still have many problems. For example, air leaks and other malfunctions are prone to occur and are difficult to troubleshoot, especially after assembly, when the entire air circuit is encased in static materials, a mattress cover, and a stain-proof cover, making it impossible to visually observe whether the air circuit is functioning properly. Secondly, because the entire air circuit contains a large number (e.g., dozens) of air cells, completing the inflation and deflation test requires a significant amount of time. Furthermore, if the raw materials or semi-finished products that make up the air mattress, such as air cells, control boards, air circuits, and the main unit, are not checked for malfunctions beforehand, rework and repair will consume a lot of time if these malfunctions are discovered during the overall testing after assembly. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a multifunctional rapid testing device and method for air mattresses. The device incorporates miniature airbags within the mattress fixture to simulate the various functional chambers of the mattress. The main unit fixture integrates an air pump, valve assembly, and multiple sensors, which can be used independently. This eliminates the need for comprehensive testing of the entire air mattress to locate issues such as leaks. It can test both the mattress itself and the main unit, effectively shortening the testing cycle and accurately identifying problems. Furthermore, the compact size of the entire device makes it easy for personnel to carry and use.

[0005] This was achieved through the following technical solutions: First, a multifunctional air mattress rapid testing device is proposed, comprising: a mattress fixture, a main unit fixture, and a multi-cavity socket. The mattress fixture has multiple independent small airbags built into it, each of which is connected to a different air path of the multi-cavity socket to simulate multiple components of the mattress. The main unit fixture includes a housing and an air pump, a main control board, a display screen, a multi-way solenoid valve group, and multiple pressure sensor groups housed within the housing. The air outlet of the air pump is connected in parallel to the air inlet of each solenoid valve group. The working port of each solenoid valve group is connected to the corresponding air path of the multi-cavity socket to connect to the corresponding small airbag. Each pressure sensor is integrated on the main control board and connected to the working port of the corresponding solenoid valve group to detect the real-time pressure value of the corresponding solenoid valve group. The display screen is used to visually present the inflation pressure curve and fault judgment results corresponding to each real-time pressure value.

[0006] Optionally, any one of the solenoid valve groups includes a one-way valve, a solenoid valve, and a three-way connector connected in sequence. The exhaust port of the three-way connector is connected to a pressure sensor, and the working port is connected to the corresponding air path of the multi-chamber socket through a corresponding conduit. All conduits are made of silicone tubing. The solenoid valve is a solenoid three-way valve. Port 1 of the solenoid three-way valve is connected to the air pump, port 2 is connected to the three-way connector, and port 3 is suspended. When energized, ports 1 and 2 are open, and when de-energized, ports 2 and 3 are open.

[0007] Optionally, within the pad fixture, each small airbag is a long column shape, and each small airbag is marked with text or symbols corresponding to the components.

[0008] Optionally, the multi-chamber air inlet includes a suspended air passage and seven for connecting each different small airbag; the suspended air passage is used for deflation or as a backup function expansion.

[0009] Optionally, seven different small airbags are used to simulate the central oscillation odd airbag assembly, the central oscillation even airbag assembly, the limb oscillation odd airbag assembly, the limb oscillation even airbag assembly, the left turning airbag assembly, the right turning airbag assembly, and the prone ventilation airbag assembly.

[0010] Optionally, within the pad fixture, each small airbag, after being inflated, does not exceed 2cm in diameter and 10cm in length, and each small airbag is made of nylon PVC.

[0011] Secondly, a rapid testing method for multifunctional air mattresses is proposed, which uses the aforementioned rapid testing device for multifunctional air mattresses. The method includes the following steps: S1. Set up a pad fixture to simulate the load on the pad. The pad fixture has a built-in small airbag to simulate each actual pad airbag. Each small airbag corresponds to a preset functional component of the air mattress to be tested. S2. Set up a main machine tool for providing air source and sensing pressure. The main machine tool is equipped with an air pump, a pressure sensing unit and an air path switching unit. The air pump is used to provide air, the pressure sensing unit is used to detect the air pressure of the corresponding air path of each small air bag, and the air path switching unit is used to control the switching and measurement of the corresponding air path of different small air bags. S3. Determine whether the device is to be tested or to be tested. If it is to be tested, connect the device to the pad fixture, start the air pump of the fixture corresponding to the device, and inflate each small airbag in the pad fixture in sequence. Monitor the relationship between inflation time T and airbag pressure P. If the corresponding pressure P reaches the preset first pressure threshold P1 within the preset first time T1, it is determined that the air path of the device is normal; otherwise, it is abnormal. If the device is to be tested, proceed to step S4. S4. If testing the pad under test, connect the pad under test to the air circuit of the main unit tool, start the air pump of the main unit tool, and simultaneously inflate each actual airbag component in the pad under test. Monitor the relationship between inflation time and airbag pressure. If the corresponding pressure P reaches the preset second pressure threshold P2 within the preset second time T2, it is determined that the airtightness of the corresponding airbag component of the pad under test is normal. Otherwise, there is a leakage fault, and a fault warning is issued through the display screen.

[0012] Optionally, in step S3, the volume of any small airbag in the pad fixture is denoted as V1, and the volume of the corresponding actual airbag component in any pad to be tested is denoted as V2. Then V1≤K×V2, K>100.

[0013] Optionally, in step S4, the preset second pressure threshold P2 is lower than the first pressure threshold P1, and the preset second duration T2 is greater than the first duration T1.

[0014] Optionally, when testing the host machine under test, the incoming material inspection of the main control board is also included: the main control board built into the host machine tooling is removed and replaced with the main control board under test, and then connected to the pad tooling for testing to determine whether the main control board under test is normal.

[0015] The beneficial effects of this invention compared to the prior art are: The technical solution of this invention adopts a split-type dedicated tooling design. The pad tooling has built-in micro airbags to simulate the functional chambers of the mattress, and the main tooling integrates an air pump, valve group and multi-channel pressure sensors. The two work independently and can locate the main control fault or pad leakage without connecting the whole bed. This greatly shortens the troubleshooting time and improves the detection efficiency. In addition, the overall size of the components used is relatively small, and there is no need to limit high-precision and high-cost equipment. This effectively reduces the detection cost and is easy for after-sales personnel to carry or randomly configure. Attached Figure Description

[0016] Figure 1 A schematic diagram of the frame of a multifunctional rapid testing device for air mattresses; Figure 2 This is a schematic diagram of the solenoid valve assembly. Figure 3 A first-person perspective schematic diagram of eight different air passages on a multi-chamber socket; Figure 4 This is a second-view schematic diagram of eight different air passages on a multi-chamber socket. Detailed Implementation

[0017] The technical solutions in the embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0018] like Figure 1 The diagram shows a frame of a multifunctional air mattress rapid testing device. By incorporating miniature airbags into the mattress fixture to simulate the various functional chambers of the mattress, and integrating air pumps, valve groups, multi-channel sensors, and other devices into the main unit fixture, these devices can be used independently. This allows for testing of both the mattress and the main unit, effectively shortening the testing cycle and accurately identifying the problem. Furthermore, the components used in the overall device are compact, making it easy for relevant personnel to carry and use.

[0019] This multifunctional air mattress rapid testing device mainly includes: a mattress fixture, a main unit fixture, and a multi-chamber socket. The mattress fixture simulates the actual air mattress to be tested and can be used to quickly test whether the air circuit of the main unit or the main unit fixture is normal. The main unit fixture simulates the actual main unit to be tested (to be used). The two are connected by a multi-chamber socket, which enables quick plugging and unplugging for convenient use.

[0020] In this embodiment, the pad fixture contains seven independent small air bladders to simulate the shape of air bladders in an actual pad. These air bladders are elongated cylindrical shapes, with an inflated diameter not exceeding 2cm and a length not exceeding 10cm. Each small air bladder is made of soft nylon PVC, and each air bladder is connected to different air passages in a multi-chamber socket via conduits (air tubes) to simulate multiple components within the pad. Each conduit is made of silicone tubing, allowing for folding and bending. Figure 3 and Figure 4 The two perspectives shown include multiple components: central oscillation odd airbag assembly, central oscillation even airbag assembly, limb oscillation odd airbag assembly, limb oscillation even airbag assembly, left turning airbag assembly, right turning airbag assembly, and prone ventilation airbag assembly. The remaining 8th channel is suspended and can be used for deflation or as a backup function expansion.

[0021] In order to quickly complete inflation and deflation and improve testing efficiency, the volume of each small airbag in the pad fixture can be limited to a very small size, for example, to one percent or even one thousandth of the volume of the normal airbag components in the actual pad, so that inflation and deflation can be completed quickly.

[0022] Each of the seven small air bladders in the pad fixture has a text or symbol label corresponding to the function of the component, which is used to indicate its role or function.

[0023] In this embodiment, the main fixture includes a housing and an air pump, main control board, display screen, multi-channel solenoid valve group, and multiple pressure sensor groups housed within the housing. The air pump's outlet is connected in parallel to the air inlets of each solenoid valve group; each pressure sensor is integrated on the main control board and connected to the working port of the corresponding solenoid valve group to detect the real-time pressure value of that solenoid valve group. The display screen is connected to the main control board, visually presenting the inflation pressure curve and fault determination results corresponding to each real-time pressure value.

[0024] Combination Figure 2 The schematic diagram of the solenoid valve assembly shown illustrates that each solenoid valve assembly (component) includes a check valve, a solenoid valve, and a three-way connector connected in sequence. The exhaust port of the three-way connector is connected to a pressure sensor, and the working port is connected to a multi-chamber socket via a corresponding conduit, thus enabling connection to the corresponding air path of the pad fixture. The solenoid valve is a solenoid three-way valve. Port 1 of the solenoid three-way valve is connected to the air pump via a check valve, port 2 is connected to the three-way connector, and port 3 is left unconnected. When energized, ports 1 and 2 of the solenoid three-way valve are open; when de-energized, ports 2 and 3 are open. When each solenoid valve assembly is open (conducted), Figure 3 Both the central electromagnetic three-way valve and the three-way pipe connector have ports 1 and 2 connected, allowing the air pump to supply air to the small airbag; when the electromagnetic valve is closed... Figure 3 All ports 2 and 3 are connected, allowing the small airbag to expel gas into the atmosphere.

[0025] The device in this embodiment can also be used for incoming material inspection of the main control board. The main control board is removed from the main machine tooling, and the main control board to be tested is connected (the main control board has a power supply, display screen, and air pump connector; simply plug it in to connect). It is then connected to the pad tooling via a corresponding conduit and multi-chamber socket. The three ports of the solenoid valve assembly's tee connector are connected in parallel to the pressure sensor of the main control board to be tested. The power is then turned on, and the start button of the testing software on the display screen is pressed. Each channel is tested sequentially. The test ends when the pressure or time reaches the set value (e.g., 3-5 seconds). If the pressure reaches the set value, the function is normal, and a green light illuminates on the display screen. If the time reaches the set value but the pressure does not, the function is considered abnormal, and a green light illuminates. A single-channel abnormality indicates a problem with the control circuit of that channel. If multiple channels are abnormal, it is considered a pressure sensor malfunction and requires manual troubleshooting.

[0026] It should be noted that the pad fixture can be used to test the host machine under test, while the host machine fixture can be used to test the pad. Because it uses a multi-cavity socket plug-in method, it is simple and easy to use during testing, allowing testers to quickly complete the testing of the corresponding target.

[0027] Figure 2This is a flowchart of a rapid testing method for a multifunctional air mattress, combined with... Figure 2 As shown, this method uses the aforementioned device for pad detection or host detection, and mainly includes the following steps: S1. Set up a fixture to simulate the load on the air mattress. The fixture contains a small airbag to simulate each actual airbag in the mattress. Each small airbag corresponds to a preset functional component of the air mattress to be tested. Let V1 be the volume of any small airbag in the fixture and V2 be the volume of any actual airbag component in the mattress to be tested. Then V1 ≤ K × V2, K > 100.

[0028] S2. Set up a main fixture for providing air source and sensing pressure. The main fixture includes an air pump, a pressure sensing unit and an air path switching unit. The air pump is used to provide air, the pressure sensing unit is used to detect the air pressure of the corresponding air path of each small airbag, and the air path switching unit is used to control the switching and measurement of the corresponding air path of different small airbags.

[0029] S3. Determine whether the device is to be tested (the pad or the host). If it is to be tested (the host), connect the host to the pad fixture, start the air pump of the fixture corresponding to the host, and inflate each small airbag in the pad fixture sequentially. Monitor the relationship between the inflation time T and the airbag pressure P. If each test is within the preset first time T1 and the corresponding pressure P reaches the preset first pressure threshold P1, then the corresponding air path of the host is considered normal. Otherwise, it is abnormal (e.g., if the pressure of a single path does not reach the first pressure threshold P1, the control circuit or air pump of that path is considered to be faulty; if multiple paths are abnormal, it is considered that there is a pressure sensor fault or air pump fault in the host). If the device is to be tested (the pad), proceed to step S4.

[0030] S4. If testing the test pad, connect the test pad to the main unit's tooling air circuit, start the main unit's tooling air pump, and simultaneously inflate each actual airbag component in the test pad (simultaneous inflation reduces time). Monitor the relationship between inflation time and airbag pressure. If the pressure P corresponding to any airbag in the air circuit reaches the preset second pressure threshold P2 within the preset second time T2, the airtightness of the corresponding airbag component in the test pad is determined to be normal. Otherwise, a leakage fault exists, and a fault warning can be displayed on the screen. Considering the significant difference in volume between the test object and the inflation pressure build-up speed, and the difference in the detection target, the preset second pressure threshold P2 is set to be lower than the first pressure threshold P1, and the preset second time T2 is set to be greater than the first time T1.

[0031] When testing the host machine under test, incoming material inspection of the main control board can also be performed: the main control board built into the host machine tooling is removed and replaced with the main control board under test, and then connected to the pad tooling for testing to determine whether the main control board under test is normal.

[0032] Furthermore, since the tooling for the mattress body and the tooling for the main unit can be inspected separately, the inspection can also be used to troubleshoot after-sales service faults of actual air mattresses. For example, the conduits of the main unit and the mattress body of the machine to be troubleshooted can be loosened, and the main unit and the mattress body can be inspected separately in the manner described above. Since the actual main unit inspection time is relatively short, it can be inspected first. If the main unit is not faulty, the mattress body can then be inspected.

[0033] In summary, this invention employs a split-type dedicated tooling design. The pad tooling incorporates micro airbags to simulate the functional chambers of a mattress, while the main tooling integrates an air pump, valve assembly, and multiple pressure sensors. These two components work independently, allowing for the separate location of main control faults or pad leaks without connecting the entire mattress. This significantly reduces troubleshooting time and improves testing efficiency. Furthermore, the overall components are relatively compact, eliminating the need for high-precision, high-cost equipment. This effectively reduces testing costs and makes the device easy for after-sales personnel to carry or configure, demonstrating significant advancements.

[0034] The above embodiments are merely illustrative of the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solutions based on the technical concept proposed in this invention shall fall within the scope of protection of this invention.

Claims

1. A multifunctional rapid testing device for air mattresses, characterized in that, include: Pad fixtures, main unit fixtures, multi-cavity sockets; The pad fixture has multiple independent small airbags, each of which is connected to different air passages of the multi-chamber socket to simulate multiple components of the pad. The main unit includes a housing and an air pump, main control board, display screen, multi-channel solenoid valve group, and multiple pressure sensor groups housed within the housing. The air outlet of the air pump is connected in parallel to the air inlet of each solenoid valve group. The working port of each solenoid valve group is connected to the corresponding air path of the multi-chamber socket for connecting to the corresponding small airbag. Each pressure sensor is integrated on the main control board and connected to the working port of the corresponding solenoid valve group for detecting the real-time pressure value of the corresponding solenoid valve group. The display screen is used to visually present the inflation pressure curve and fault judgment results corresponding to each real-time pressure value.

2. The multifunctional air mattress rapid testing device according to claim 1, characterized in that, Each solenoid valve group includes a check valve, a solenoid valve, and a three-way connector connected in sequence. The exhaust port of the three-way connector is connected to a pressure sensor, and the working port is connected to the corresponding air path of the multi-chamber socket through a corresponding conduit. All conduits are made of silicone tubing. The solenoid valve is a solenoid three-way valve. Port 1 of the solenoid three-way valve is connected to the air pump, port 2 is connected to the three-way connector, and port 3 is suspended. When energized, ports 1 and 2 are open, and when de-energized, ports 2 and 3 are open.

3. The multifunctional air mattress rapid testing device according to claim 1, characterized in that, Inside the pad fixture, each small airbag is a long column shape, and each small airbag has text or symbol markings corresponding to the components.

4. The multifunctional air mattress rapid testing device according to claim 3, characterized in that, The multi-chamber air inlet includes a suspended air passage and seven smaller air chambers for connecting each different air chamber. The suspended air passage is used for deflation or as a backup function expansion.

5. A multifunctional air mattress rapid testing device according to claim 4, characterized in that, Seven different small airbags are used to simulate the central oscillation odd airbag assembly, the central oscillation even airbag assembly, the limb oscillation odd airbag assembly, the limb oscillation even airbag assembly, the left turning airbag assembly, the right turning airbag assembly, and the prone ventilation airbag assembly.

6. The multifunctional air mattress rapid testing device according to claim 1, characterized in that, Inside the pad fixture, each small airbag, after being inflated, does not exceed 2cm in diameter and 10cm in length, and each small airbag is made of nylon PVC.

7. A rapid testing method for a multifunctional air mattress, comprising using the rapid testing device for a multifunctional air mattress as described in any one of claims 1 to 6, characterized in that, Includes the following steps: S1. Set up a pad fixture to simulate the load on the pad. The pad fixture has a built-in small airbag to simulate each actual pad airbag. Each small airbag corresponds to a preset functional component of the air mattress to be tested. S2. Set up a main machine tool for providing air source and sensing pressure. The main machine tool is equipped with an air pump, a pressure sensing unit and an air path switching unit. The air pump is used to provide air, the pressure sensing unit is used to detect the air pressure of the corresponding air path of each small air bag, and the air path switching unit is used to control the switching and measurement of the corresponding air path of different small air bags. S3. Determine whether the device is to be tested or to be tested. If it is to be tested, connect the device to the pad fixture, start the air pump of the fixture corresponding to the device, and inflate each small airbag in the pad fixture in sequence. Monitor the relationship between inflation time T and airbag pressure P. If the corresponding pressure P reaches the preset first pressure threshold P1 within the preset first time T1, it is determined that the air path of the device is normal; otherwise, it is abnormal. If the test pad is to be tested, proceed to step S4; S4. If testing the pad under test, connect the pad under test to the air circuit of the main unit tool, start the air pump of the main unit tool, and simultaneously inflate each actual airbag component in the pad under test. Monitor the relationship between inflation time and airbag pressure. If the corresponding pressure P reaches the preset second pressure threshold P2 within the preset second time T2, it is determined that the airtightness of the corresponding airbag component of the pad under test is normal. Otherwise, there is a leakage fault, and a fault warning is issued through the display screen.

8. The rapid testing method for a multifunctional air mattress according to claim 1, characterized in that, In step S3, the volume of any small airbag in the pad fixture is denoted as V1, and the volume of the corresponding actual airbag component in any pad to be tested is denoted as V2. Then V1≤K×V2, K>100.

9. The rapid testing method for a multifunctional air mattress according to claim 1, characterized in that, In step S4, the preset second pressure threshold P2 is lower than the first pressure threshold P1, and the preset second duration T2 is greater than the first duration T1.

10. A rapid testing method for a multifunctional air mattress according to claim 1, characterized in that, When testing the host machine under test, the incoming inspection of the main control board is also included: the main control board built into the host machine tooling is removed and replaced with the main control board under test, and then connected to the pad tooling for testing, which is used to determine whether the main control board under test is normal.

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