A vital signs detection pad

Abstract

This utility model discloses a vital signs detection pad, relating to the field of mattress technology. It includes a mattress body with a collection box body fixedly connected to its end. The mattress body is a multi-layered composite structure, consisting of an upper part, a detection sensor, a sponge pad, and a lower part stacked sequentially. The detection sensor is composed of equidistantly distributed elongated sensors. This vital signs detection pad, with its layered distribution of the upper part, detection sensor, sponge pad, and lower part, utilizes the sponge pad's elastic deformation to buffer local pressure, allowing the sensors to primarily respond to dynamic physiological vibrations rather than static body weight, thus optimizing the sensitivity and accuracy of signal capture. The detection sensors, with their equidistantly parallel elongated design, are arranged along the length of the mattress, forming a spatially discrete force-sensing array that effectively captures physiological fluctuations propagating along the body's longitudinal axis, suitable for signal sensing in different body positions.

Description

Technical Field

[0001] This utility model relates to the field of mattress technology, specifically a vital signs detection pad. Background Technology

[0002] The vital signs monitoring pad is an intelligent monitoring device that uses built-in sensors to monitor the user's heart rate, respiratory rate, in-bed or out-of-bed status, body movement, and other data in real time. It also supports wireless data transmission and abnormal alerts.

[0003] For example, Chinese Patent CN222815758U discloses a vital signs detection device and mat, belonging to the field of signal processing technology. The device includes: a first contact layer, a sensing optical fiber layer, and a second contact layer stacked sequentially; both the first and second contact layers protect the sensing optical fiber layer. A first optical fiber sensor is arranged on the sensing optical fiber layer. The first optical fiber sensor is an optical phase modulation type optical fiber sensor. When a user sits or lies on the device, the vibration signal of the user's body causes a phase change in the light transmitted in the optical fiber. In this case, the sensor collects a first segment of optical signal, which is used to characterize the optical phase change. The optical phase change is used to detect the vital signs of the first user to detect the user's health status. Because the optical phase modulation type optical fiber sensor has high sensitivity, the health detection performance of the mat provided in this application is better and more accurate. There are also other announcements... Chinese Patent No. CN215533104U discloses a mattress for detecting vital signs when a person sits up or gets out of bed. The mattress includes a first mattress and a second mattress. A first support plate and a second support plate are fixedly mounted on the lower surfaces of the first and second mattresses, respectively. The first support plate has symmetrically recessed connecting grooves at one end near the second support plate. Each symmetrically arranged connecting groove has a limiting block. A slider is movably connected within each symmetrically arranged connecting groove, and the slider has a connecting rod extending out of the connecting groove. The second support plate has symmetrically fixed rods at one end near the first support plate. Both the fixed rods and the connecting rods have threaded teeth on their outer walls. An installation ring is movably connected to the outer walls of the fixed rods and the connecting rods. The installation ring has a threaded groove that mates with the threaded teeth. By providing movably connected slots and rods, and by providing movably connected installation rings on the outer walls of the connecting rods and fixed rods, the first and second mattresses can be separated when not in use, saving space.

[0004] In the use of existing vital sign detection pad technology, the sensor may become overloaded due to the concentrated weight of the human body in a local area, resulting in inaccurate monitoring data. In addition, changes in lying position may cause the heart to shift, which in turn leads to uneven signal acquisition. Utility Model Content

[0005] The purpose of this invention is to provide a vital signs detection pad to solve the problem in the background art where the sensor overloads due to localized gravity concentration on the human body, resulting in inaccurate monitoring data.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a vital signs detection pad, comprising a mattress pad body, wherein a collection box body is fixedly connected to the end of the mattress pad body; The mattress pad has a multi-layer composite structure, consisting of an upper part, a detection sensor, a sponge pad, and a lower part stacked sequentially. The detection sensor is composed of equally spaced elongated sensors that are parallel to the length of the mattress pad.

[0007] The mattress padding uses a four-layer composite structure, with a waterproof padding material directly contacting the human body, and underneath, a detection sensor, a sponge pad, and the padding itself are layered in sequence.

[0008] Preferably, both the upper and lower parts of the pad are made of waterproof material, and the sponge pad is located between the lower part of the pad and the detection sensor, bearing the pressure on the upper part of the pad and the detection sensor.

[0009] The sponge pad is located between the sensor layer and the pad body. The sponge pad buffers local pressure through elastic deformation, preventing the sensor from being overloaded due to the concentrated local gravity of the human body.

[0010] Preferably, the upper and lower ends of the pad are both installed inside the collection box body, and the upper and lower ends of the pad are provided with annularly distributed connecting holes. The end of the detection sensor is provided with a connector, which is installed inside the collection box body.

[0011] The waterproof features on and under the pad prevent sweat from penetrating and causing short circuits in the sensor.

[0012] Preferably, the collection box body includes an upper collection box shell and a lower collection box shell, which are connected to each other to form the collection box body. The top of the lower collection box shell is fixedly connected with an annularly distributed connecting posts, and the upper and lower parts of the pad are fixed to the outside of the connecting posts through connecting holes.

[0013] The main body of the data acquisition box consists of an upper shell and a lower shell assembled with screws to form a closed cavity. The upper end of the connecting post is fixed to the upper shell of the data acquisition box with screws to form a double lock, preventing the interface from loosening due to mattress deformation.

[0014] Preferably, the upper end of the connecting column and the upper shell of the acquisition box are fixedly connected to each other by screws, and an acquisition circuit board is installed between the upper shell and the lower shell of the acquisition box.

[0015] Preferably, one end of the acquisition circuit board is provided with a connection slot, and the connector is inserted into the connection slot to form an electrical connection. The end of the acquisition circuit board away from the connection slot is provided with an external slot.

[0016] Preferably, the end of the external slot away from the inside of the upper shell of the acquisition box penetrates through the upper shell of the acquisition box, the external slot is connected to the external cable, and a reinforcing ring is fixedly connected to the outside of the upper shell of the acquisition box, the reinforcing ring is set on the outside of the mattress pad.

[0017] The acquisition circuit board is horizontally suspended in the middle of the acquisition box cavity. Its connection slot and sensor connector form a vertical insertion structure to achieve spatial electrical isolation. The reinforcing ring covers the cable interface with an interference fit to prevent poor contact caused by external force pulling.

[0018] Compared with the prior art, the beneficial effects of this utility model are: This vital sign detection pad consists of a pad body, detection sensors, a sponge pad, and a layered structure underneath the pad body. The sponge pad cushions local pressure through elastic deformation, allowing the sensors to primarily respond to dynamic physiological vibrations rather than static body weight, thus optimizing the sensitivity and accuracy of signal capture. The detection sensors are designed with equidistant parallel strips arranged along the length of the mattress, forming a spatially discrete force sensing array that effectively captures physiological fluctuations propagating along the body's longitudinal axis, making it suitable for signal sensing in different body positions.

[0019] The upper and lower layers of the pad are wrapped with waterproof material to prevent external liquid penetration, ensuring the long-term reliability of the sensor circuit in humid environments and avoiding electrical failures. The integrated interface of the connector and connection hole is achieved through mechanical fixation and electrical path integration. The connector at the end of the sensor is directly inserted into the connection hole of the data acquisition box, which prevents stress concentration at traditional cable soldering points and improves durability and fatigue resistance.

[0020] On the acquisition circuit board, the weak signal end of the connecting slot and the strong power interface of the external slot are located at opposite ends, and are equipped with a ground shielding layer to optimize signal integrity and reduce crosstalk between strong and weak currents. The reinforcing ring covers the external slot interface with an interference fit and is fixed to the outside of the acquisition box. This structure provides mechanical reinforcement to prevent loosening or separation caused by external force pulling. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of the mattress pad of this utility model; Figure 3 This is an exploded view of the main body of the data collection box of this utility model; Figure 4 This is a schematic diagram of the data acquisition circuit board structure of this utility model; Figure 5 This is a schematic diagram of the reinforcing ring structure of this utility model; Figure 6 This utility model Figure 5Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Mattress pad; 2. Data acquisition box body; 3. Upper part of the pad; 4. Lower part of the pad; 5. Detection sensor; 6. Sponge pad; 7. Connection hole; 8. Connector; 9. Upper shell of the data acquisition box; 10. Lower shell of the data acquisition box; 11. Connecting post; 12. Data acquisition circuit board; 13. Connection slot; 14. External slot; 15. Reinforcing ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: Please refer to Figure 1 - Figure 6 This utility model provides the following technical solution: a vital signs detection pad, including a mattress pad 1, with a collection box body 2 fixedly connected to one end of the mattress pad 1; as shown Figure 2 As shown, the mattress pad 1 has a multi-layer composite structure. The mattress pad 1 is composed of a top pad 3, a detection sensor 5, a sponge pad 6, and a bottom pad 4 stacked in sequence. The detection sensor 5 is composed of long strip sensors that are evenly distributed and are parallel to the length direction of the mattress pad 1. Both the top pad 3 and the bottom pad 4 are made of waterproof material. The sponge pad 6 is located between the bottom pad 4 and the detection sensor 5, and the sponge pad 6 bears the pressure on the top pad 3 and the detection sensor 5.

[0025] like Figure 4 As shown, the upper part 3 and the lower part 4 of the pad are both installed inside the collection box body 2. The upper part 3 and the lower part 4 of the pad are both provided with annularly distributed connecting holes 7. The end of the detection sensor 5 is provided with a connector 8, which is installed inside the collection box body 2.

[0026] The vital signs detection pad in this embodiment achieves non-intrusive monitoring through a multi-layer composite structure. Its core lies in the distributed sensor layout and optimized physical signal transmission. The mattress pad 1 adopts a four-layer composite structure. The waterproof material upper 3 directly contacts the human body, and the detection sensor 5, sponge pad 6, and lower 4 are stacked below in sequence. The detection sensor 5 consists of multiple sets of long strip piezoelectric units arranged at equal intervals, and all units extend parallel to the length direction of the mattress. The equidistant layout forms a spatially discrete force sensing array. When the human heart beats or respiration produces micro-vibrations, the vibration waves are transmitted through the upper 3 of the pad to each long strip sensor. The long strip unit can capture physiological fluctuations propagating along the longitudinal axis of the body.

[0027] The sponge pad 6 is located between the sensor layer and the lower part of the pad 4. The sponge pad 6 buffers local pressure through elastic deformation, preventing the sensor from being overloaded due to the concentration of local weight of the human body. This allows the sensor 5 to mainly respond to dynamic physiological vibrations rather than static weight. The waterproof properties of the upper part of the pad 3 and the lower part of the pad 4 prevent sweat penetration from causing short circuits in the sensor. The connector 8 of the sensor 5 passes through the connection hole 7 between the upper and lower layers of the pad and is inserted into the main body of the acquisition box 2, forming an integrated interface for mechanical fixation and electrical path, preventing the fatigue risk caused by the stress of traditional welded cables.

[0028] When the human body is in different lying positions, the change in the projection position of the heart causes differences in the vibration energy received by each sensor group. The processor in the acquisition box 2 compares the amplitude of multiple sensor signals in real time and automatically selects the sensor group with the best signal-to-noise ratio as the main signal source. Physical layer optimization avoids effective waveform attenuation caused by electronic filtering, providing original signal guarantee for subsequent timing alignment algorithms.

[0029] Example 2: Based on Example 1, please refer to... Figure 3 - Figure 6 The following structure was also disclosed: Figure 3 As shown, the acquisition box body 2 includes an upper acquisition box shell 9 and a lower acquisition box shell 10. The upper acquisition box shell 9 and the lower acquisition box shell 10 are connected to each other to form the acquisition box body 2. The top of the lower acquisition box shell 10 is fixedly connected with an annularly distributed connecting posts 11. The upper pad 3 and the lower pad 4 are both fixed to the outside of the connecting posts 11 through connecting holes 7. The upper end of the connecting posts 11 and the upper acquisition box shell 9 are fixedly connected to each other by screws. An acquisition circuit board 12 is installed between the upper acquisition box shell 9 and the lower acquisition box shell 10. One end of the acquisition circuit board 12 is provided with a connecting slot 13. The connector 8 is inserted into the connecting slot 13 to form an electrical connection. The end of the acquisition circuit board 12 away from the connecting slot 13 is provided with an external slot 14.

[0030] like Figure 6 As shown, one end of the external slot 14, away from the interior of the upper shell 9 of the acquisition box, passes through the upper shell 9 of the acquisition box. The external slot 14 is connected to the external cable. A reinforcing ring 15 is fixedly connected to the outside of the upper shell 9 of the acquisition box. The reinforcing ring 15 is located on the outside of the mattress pad 1.

[0031] The main body 2 of the collection box consists of the upper shell 9 and the lower shell 10 of the collection box, which are assembled by screws to form a closed cavity. The connecting post 11 at the top of the lower shell 10 of the collection box passes through the connecting holes 7 of the upper 3 and the lower 4 of the pad, so that the flexible pad and the rigid collection box form a stress-isolated connection. The upper end of the connecting post 11 is fixed with the screw of the upper shell 9 of the collection box to form a double lock, preventing the interface from loosening due to the deformation of the mattress.

[0032] The acquisition circuit board 12 is horizontally suspended in the middle of the acquisition box cavity. Its connection slot 13 and sensor connector 8 form a vertical insertion structure to achieve spatial electrical isolation. The external slot 14 of the high-voltage part and the connection slot 13 of the low-voltage signal part are respectively placed at both ends of the circuit board. Crosstalk is reduced by the ground wire shielding layer. The external slot 14 extends to the outside of the upper shell 9 of the acquisition box. The reinforcing ring 15 covers the cable interface with an interference fit to prevent poor contact caused by external force pulling.

[0033] Example 3: Based on Examples 1 and 2, the specific working principle is as follows: When a person turns over, the processor continuously performs three levels of judgment. First, it excludes sensor groups whose signals are attenuated due to limb obstruction, such as when an arm is pressing on a sensor. Second, it sorts the valid signal groups by amplitude. Finally, when switching the main signal source, it activates the characteristic wave period synchronization mechanism, which only enables new sensor data after the current heartbeat or respiratory cycle ends, and at the falling edge of the ECG R wave or the trough of the respiratory wave. The clock module of the acquisition circuit board 12 marks the time stamp of each sensor signal, and the software interpolation algorithm is used to compensate for the mechanical wave transmission delay of different sensor groups, eliminating waveform phase misalignment caused by differences in sensor position.

[0034] In the event of sudden signal attenuation, such as when a user sits up, the processor initiates an abnormal linkage judgment. If all sensor signals weaken synchronously and the duration exceeds the threshold, it is determined that the user has left the bed and an alarm is triggered. If only a single sensor group is abnormal, the process returns to the initial selection process to re-select the signal source. Through the synergy of hardware interface stability and software fault tolerance mechanism, continuous monitoring is achieved.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vital signs detection pad, comprising a mattress pad (1), wherein a collection box body (2) is fixedly connected to the end of the mattress pad (1). Its features are: The mattress pad (1) is a multi-layer composite structure. The mattress pad (1) is composed of the upper part (3), the detection sensor (5), the sponge pad (6) and the lower part (4) stacked in sequence. The detection sensor (5) is composed of long strip sensors that are evenly distributed and are parallel to the length direction of the mattress pad (1).

2. The vital signs detection pad according to claim 1, characterized in that: Both the upper (3) and lower (4) of the pad are made of waterproof material. The sponge pad (6) is located between the lower (4) of the pad and the detection sensor (5). The sponge pad (6) bears the pressure on the upper (3) of the pad and the detection sensor (5).

3. The vital signs detection pad according to claim 2, characterized in that: The upper (3) and lower (4) ends of the pad are both installed inside the collection box body (2). The upper (3) and lower (4) ends of the pad are provided with annularly distributed connecting holes (7). The end of the detection sensor (5) is provided with a connector (8), which is installed inside the collection box body (2).

4. The vital signs detection pad according to claim 1, characterized in that: The collection box body (2) includes a collection box upper shell (9) and a collection box lower shell (10). The collection box upper shell (9) and the collection box lower shell (10) are connected to each other to form the collection box body (2). The top of the collection box lower shell (10) is fixedly connected with an annularly distributed connecting posts (11). The upper (3) and lower (4) of the pad are both fixed to the outside of the connecting posts (11) through the connecting holes (7).

5. The vital signs detection pad according to claim 4, characterized in that: The upper end of the connecting column (11) and the upper shell (9) of the acquisition box are fixedly connected to each other by screws, and an acquisition circuit board (12) is installed between the upper shell (9) and the lower shell (10) of the acquisition box.

6. The vital signs detection pad according to claim 5, characterized in that: The acquisition circuit board (12) has a connection slot (13) at one end, and the connector (8) is inserted into the connection slot (13) to form an electrical connection. The acquisition circuit board (12) has an external slot (14) at the end away from the connection slot (13).

7. The vital signs detection pad according to claim 6, characterized in that: The external slot (14) is located away from the inside of the upper shell (9) of the collection box and passes through the upper shell (9). The external slot (14) is connected to the external cable. A reinforcing ring (15) is fixedly connected to the outside of the upper shell (9) of the collection box. The reinforcing ring (15) is located on the outside of the mattress pad (1).

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