Intelligent correction cushion system

Abstract

The invention discloses an intelligent correction seat cushion system. The intelligent correction seat cushion system comprises a seat cushion; the pressure sensing pad is arranged in the seat cushion, a flexible pressure sensing array is arranged in the pressure sensing pad, and the pressure sensing pad is used for detecting the sitting posture pressure intensity of a user and outputting a corresponding pressure detection signal; the pressure acquisition device is arranged at the edge position of the cushion, the pressure acquisition device is electrically connected with the pressure sensing pad, and the pressure acquisition device is used for acquiring a pressure detection signal output by the pressure sensing pad, converting the pressure detection signal into pressure data and outputting the pressure data; and the upper computer is in communication connection with the pressure acquisition device, and the upper computer is used for receiving the pressure data output by the pressure acquisition device and outputting a sitting posture signal to the pressure acquisition device after judging the sitting posture condition of the user according to the pressure data. The problem that a correction cushion cannot accurately capture subtle changes of pressure and cannot recognize the sitting posture of a user is solved.

Description

Technical Field

[0001] This invention relates to the field of wearable devices, and more particularly to an intelligent corrective cushion system. Background Technology

[0002] Currently, flexible pressure sensing pads are mainly used in medical monitoring, human-computer interaction, and smart cushions, but existing technologies have significant shortcomings in high-density arrays. Specifically, the simple cross-electrode structure can only achieve the most basic "pressure present / absent" detection, and cannot acquire continuous pressure gradient data, thus limiting the accuracy of posture recognition. Furthermore, the graphene composite material used, due to manufacturing limitations, still has an array density of less than 256 points. Low-density arrays cannot accurately capture subtle changes in pressure.

[0003] The fabrication of high-density sensor arrays faces multiple challenges: silicon-based flexible arrays require complex multi-layer photolithography and bonding processes, which not only involve large equipment investments but also result in low yields. New material solutions (such as graphene transfer technology) have high raw material costs. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide an intelligent corrective cushion system to solve the problem that corrective cushions cannot accurately capture subtle changes in pressure and identify the user's sitting posture.

[0005] The technical solution of the present invention is as follows: A smart corrective cushion system, comprising: cushion; A pressure sensing pad is disposed inside the seat cushion. A flexible pressure sensing array is disposed inside the pressure sensing pad. The pressure sensing pad is used to detect the pressure intensity of the user's sitting posture and output a corresponding pressure detection signal. A pressure acquisition device is located at the edge of the seat cushion. The pressure acquisition device is electrically connected to the pressure sensing pad. The pressure acquisition device is used to acquire the pressure detection signal output by the pressure sensing pad and convert the pressure detection signal into pressure data before outputting it. The host computer is communicatively connected to the pressure acquisition device. The host computer is used to receive the pressure data output by the pressure acquisition device, and after determining the user's sitting posture based on the pressure data, outputs a sitting posture signal to the pressure acquisition device.

[0006] Optionally, the pressure sensing pad includes a first layer, a second layer, and a third layer; The first layer includes: First flexible fabric; Multiple first conductive tapes are attached to the first flexible fabric at equal intervals; A first flexible printed circuit is provided with the same number of first contacts as the first conductive tape, each first contact corresponding to one first conductive tape, and the first flexible printed circuit is electrically connected to the pressure acquisition device. The second layer is a pressure-sensitive material layer, which is disposed on the conductive adhesive surface of the first layer; The third layer includes: Third flexible fabric; Multiple third conductive tapes are attached to the third flexible fabric at equal intervals. The number of first conductive tapes is the same as the number of third conductive tapes, and the first conductive tapes and the third conductive tapes are perpendicular to each other. The third flexible printed circuit has the same number of third contacts as the third conductive tape, with each third contact corresponding to one third conductive tape. The third flexible printed circuit is electrically connected to the pressure acquisition device. The third layer has multiple third conductive tapes on one side that cover the second layer.

[0007] Optionally, multiple first conductive tapes and multiple third conductive tapes form a row and column structure, with the multiple first conductive tapes forming M rows and the multiple third conductive tapes forming N columns. The intersections of the multiple first conductive tapes and the multiple third conductive tapes form multiple sampling points. The pressure sampling device sequentially collects the pressure detection signal from the sampling point in the first row and first column, starting from the first row and first column, and then sequentially collects the pressure detection signal from the sampling points in the second row and first column to the second row and N column, until the pressure detection signal from the sampling point in the M row and N column is collected.

[0008] Optionally, the pressure acquisition device includes: The first multiplexer is connected to a first contact on the first flexible printed circuit. The third multiplexer is connected to the third contact on the third flexible printed circuit. The main control chip is electrically connected to the first multiplexer and also electrically connected to the third multiplexer. The main control chip is used to control one of the first multiplexers and one of the third multiplexers to be turned on, receive the pressure detection signals output by the first contact and the third contact, and convert the pressure detection signals into pressure data and output them. The wireless communication circuit is electrically connected to the main control chip and communicatively connected to the host computer. The wireless communication circuit is used to transmit the pressure data to the host computer and also to output the sitting posture signal output by the host computer to the main control chip. The main control chip is used to output a warning signal when it detects that the user has poor posture based on the posture signal.

[0009] Optionally, the intelligent corrective cushion system also includes: A voltage divider circuit is provided, wherein the input terminal of the voltage divider circuit is connected to the output terminal of the first multiplexer, the input terminal of the voltage divider circuit is also connected to the output terminal of the third multiplexer, and the output terminal of the voltage divider circuit is connected to the input terminal of the main control chip. The voltage divider circuit is used to divide the pressure detection signals output by the first multiplexer and the third multiplexer and output them to the main control chip.

[0010] Optionally, the voltage divider circuit includes: Multiple voltage divider resistors are provided, with the first end of each voltage divider resistor connected one-to-one to the output terminals of the first multiplexer and the third multiplexer, and the second end of each voltage divider resistor connected one-to-one to multiple input terminals of the main control chip.

[0011] Optionally, the intelligent corrective cushion system also includes: A light warning circuit, connected to the main control chip, is configured to operate upon receiving a warning signal output by the main control chip; and / or, A vibration warning circuit, connected to the main control chip, is configured to operate upon receiving a warning signal output by the main control chip; and / or, A voice warning circuit is connected to the main control chip, and the voice warning circuit is used to operate when it receives a warning signal output by the main control chip.

[0012] Optionally, the intelligent corrective cushion system also includes: A reset circuit is connected to the reset terminal of the main control chip. The reset circuit is used to output a reset signal to the main control chip when triggered by the user.

[0013] Optionally, the intelligent corrective cushion system also includes: A debugging interface is provided for connecting to an external debugging device, and the debugging interface is connected to the debugging terminal of the main control chip. The main control chip is used to receive debugging signals output by external devices through the debugging interface.

[0014] Optionally, the intelligent corrective cushion system also includes: A power supply circuit is provided, the output of which is connected to the power supply terminal of the pressure acquisition device. The power supply circuit is used to provide operating voltage to the pressure acquisition device.

[0015] This invention provides an intelligent corrective cushion system comprising a seat cushion, a pressure sensing pad, a pressure acquisition device, and a host computer. The pressure sensing pad, housed within the cushion, contains a flexible pressure sensor array. It detects the pressure intensity from the user's posture and outputs a corresponding pressure detection signal. The pressure acquisition device, located at the edge of the cushion and electrically connected to the pressure sensing pad, collects the pressure detection signal and converts it into pressure data before outputting it. The host computer communicates with the pressure acquisition device, receiving the pressure data and determining the user's posture based on it, before outputting a posture signal back to the device. This solution utilizes the flexible pressure sensor array within the pressure sensing pad to acquire pressure, achieving high-precision acquisition of the cushion's pressure distribution when the user is seated. This solves the problem of corrective cushions failing to accurately capture subtle pressure changes and identify user posture. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the functional modules of an embodiment of the intelligent corrective cushion system of the present invention.

[0018] Figure 2 This is a structural diagram of the first layer of the pressure sensing pad in the intelligent corrective cushion system of the present invention.

[0019] Figure 3 This is a structural diagram of the third layer of the pressure sensing pad in the intelligent corrective cushion system of this invention.

[0020] Figure 4 This is a thermal diagram of the leftward tilt of the sitting posture obtained by the host computer in the intelligent corrective seat cushion system of this invention.

[0021] Figure 5 This is a thermal diagram of the sitting posture obtained by the host computer in the intelligent corrective cushion system of this invention.

[0022] Figure 6 This is a thermal diagram of the rightward tilt of the sitting posture obtained by the host computer in the intelligent corrective seat cushion system of this invention.

[0023] Figure 7 This is a functional module schematic diagram of an embodiment of the pressure acquisition device in the intelligent corrective cushion system of the present invention.

[0024] Figure 8 This is a schematic diagram of the circuit structure of the main control chip in the intelligent corrective cushion system of the present invention.

[0025] Figure 9 This is a schematic diagram of the circuit structure of a voltage divider circuit in the intelligent corrective cushion system of the present invention.

[0026] Figure 10 This is a schematic diagram of the functional modules of another embodiment of the intelligent corrective cushion system of the present invention.

[0027] Explanation of reference numerals in the attached drawings: 10, seat cushion; 20, pressure sensing pad; 211, first flexible fabric; 212, first conductive tape; 213, first flexible printed circuit; 221, third flexible fabric; 222, third conductive tape; 223, third flexible printed circuit; 30, pressure acquisition device; 31, first multiplexer; 32, third multiplexer; 33, main control chip; 34, wireless communication circuit; 40, host computer; 51, light warning circuit; 52, vibration warning circuit; 53, voice warning circuit; 60, reset circuit; 70, debugging interface; 80, power supply circuit; R1, voltage divider resistor. Detailed Implementation

[0028] To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0029] In the implementation methods and claims, unless otherwise specified in the text, the terms "a," "an," "the," and "the" may also include plural forms. If the embodiments of the present invention involve descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0030] It should be further understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when an element is referred to as "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements present. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0031] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0032] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0033] Currently, flexible pressure sensing pads are mainly used in medical monitoring, human-computer interaction, and smart cushions, but existing technologies have significant shortcomings in high-density arrays. Specifically, the simple cross-electrode structure can only achieve the most basic "pressure present / absent" detection, and cannot acquire continuous pressure gradient data, thus limiting the accuracy of posture recognition. Furthermore, the graphene composite material used, due to manufacturing limitations, still has an array density of less than 256 points. Low-density arrays cannot accurately capture subtle changes in pressure.

[0034] The fabrication of high-density sensor arrays faces multiple challenges: silicon-based flexible arrays require complex multi-layer photolithography and bonding processes, which not only involve large equipment investments but also result in low yields. New material solutions (such as graphene transfer technology) have high raw material costs.

[0035] To address the aforementioned problems, this invention proposes an intelligent corrective cushion system.

[0036] Reference Figure 1 In one embodiment, the intelligent corrective cushion system includes: Seat cushion 10; A pressure sensing pad 20 is disposed within the seat cushion 10. A flexible pressure sensing array is disposed within the pressure sensing pad 20. The pressure sensing pad 20 is used to detect the pressure intensity of the user's sitting posture and output a corresponding pressure detection signal. A pressure acquisition device 30 is disposed at the edge of the seat cushion 10. The pressure acquisition device 30 is electrically connected to the pressure sensing pad 20. The pressure acquisition device 30 is used to acquire the pressure detection signal output by the pressure sensing pad 20 and convert the pressure detection signal into pressure data before outputting it. The host computer 40 is communicatively connected to the pressure acquisition device 30. The host computer 40 is used to receive the pressure data output by the pressure acquisition device 30, and after determining the user's sitting posture based on the pressure data, output a sitting posture signal to the pressure acquisition device 30.

[0037] In this embodiment, the surface material of the seat cushion 10 can be knitted fabric or microfiber leather, etc. Knitted fabric has excellent elasticity, can conform well to the curves of the human body, and has good breathability. The fabric has many tiny pores, allowing air to circulate on the surface of the seat cushion 10. Microfiber leather has good wear resistance and stain resistance, is not easily damaged in daily use, and is relatively easy to clean. The filling material of the seat cushion 10 can be memory foam or 3D air layer mesh, etc. Memory foam has unique viscoelasticity, which can automatically shape according to the body temperature and pressure, closely conform to the body curves, distribute body pressure, and reduce the pressure on various parts of the body. 3D air layer mesh is a new type of environmentally friendly material with three-dimensional air layers in the middle, which has excellent breathability and moisture permeability. The pressure sensing pad 20 can also be made of flexible materials and pressure sensors to form a flexible pressure sensing array. The pressure sensing array composed of multiple pressure sensors can more accurately collect the pressure at multiple points. Specifically, multiple pressure sensors can be arranged in multiple rows and columns with the same spacing between each row and column. In this way, the pressure intensity of the user's sitting posture can be accurately detected and the corresponding electrical signal, i.e., the pressure detection signal, can be output to the pressure acquisition device 30.

[0038] The pressure acquisition device 30 can be composed of a signal acquisition unit and a processor. The signal acquisition unit collects pressure detection signals from multiple pressure sensors in the flexible pressure sensor array and outputs them to the corresponding processor. The processor converts the electrical signals into digital signals, i.e., pressure data, and then outputs this data to the host computer 40 for user posture identification. Communication between the pressure acquisition device 30 and the host computer 40 can be wireless communication via Bluetooth or Wi-Fi, or wired communication, depending on the specific situation and user needs. The host computer 40 can be a computer or other similar device. After receiving the pressure data output by the pressure acquisition device 30, the host computer 40 can determine the user's posture based on the pressure data. For example, if the host computer 40 receives data showing greater pressure on the left side of the pressure sensor pad 20, it can determine that the user is leaning to the left; if the pressure on the right side of the sensor pad is greater, it can determine that the user is leaning to the right; if the pressure difference between the left and right sides of the pressure sensor pad 20 is less than a preset value, it can determine that the user's posture is upright. The specific posture judgment criteria can be set according to the actual situation and user needs. Furthermore, the host computer 40 can also be equipped with a display screen, allowing users to directly view their current sitting posture.

[0039] The technical solution of this invention comprises a seat cushion 10, a pressure sensing pad 20, a pressure acquisition device 30, and a host computer 40, forming an intelligent corrective seat cushion system. The pressure sensing pad 20 is disposed within the seat cushion 10 and contains a flexible pressure sensor array. The pressure sensing pad 20 detects the pressure intensity of the user's sitting posture and outputs a corresponding pressure detection signal. The pressure acquisition device 30 is located at the edge of the seat cushion 10 and is electrically connected to the pressure sensing pad 20. The pressure acquisition device 30 acquires the pressure detection signal output by the pressure sensing pad 20 and converts the pressure detection signal into pressure data before outputting it. The host computer 40 is communicatively connected to the pressure acquisition device 30. The host computer 40 receives the pressure data output by the pressure acquisition device 30, determines the user's sitting posture based on the pressure data, and then outputs a sitting posture signal to the pressure acquisition device 30. Thus, this solution can collect pressure through the flexible pressure sensor array inside the pressure sensing pad 20, and achieve high-precision collection of the pressure distribution of the seat cushion 10 when the user is on the seat cushion 10, thereby solving the problem that the correction seat cushion 10 cannot accurately capture subtle changes in pressure and identify the user's sitting posture.

[0040] Reference Figure 2 and Figure 3 In one embodiment, the pressure sensing pad 20 includes a first layer, a second layer, and a third layer; The first layer includes: First flexible fabric 211; Multiple first conductive tapes 212 are attached to the first flexible fabric 211 at equal intervals; A first flexible printed circuit 213 is provided with the same number of first contacts as the first conductive tape 212, each first contact corresponding to one first conductive tape 212, and the first flexible printed circuit 213 is electrically connected to the pressure acquisition device 30. The second layer is a pressure-sensitive material layer, which is disposed on the conductive adhesive surface of the first layer; The third layer includes: Third flexible fabric 221; Multiple third conductive tapes 222 are attached to the third flexible fabric 221 at equal intervals. The number of first conductive tapes 212 is the same as the number of third conductive tapes 222. The first conductive tapes 212 and the third conductive tapes 222 are perpendicular to each other. The third flexible printed circuit 223 is provided with the same number of third contacts as the third conductive tape 222. Each third contact corresponds to one third conductive tape 222. The third flexible printed circuit 223 is electrically connected to the pressure acquisition device 30. The third layer has multiple third conductive tapes 222 on one side covering the second layer.

[0041] In this embodiment, the first layer can be a square piece of flexible fabric, on which multiple first conductive tapes 212 of equal length are pasted at equal intervals. According to the width of the conductive tapes and the spacing between the tapes, a corresponding first flexible printed circuit 213 is designed. The first flexible printed circuit 213 has multiple first contacts, each corresponding to multiple conductive tapes, and a gold finger port extending outward at one end for connecting to the pressure acquisition device 30. The third layer has the same material and circuit settings as the first layer. The overall setting direction of the third conductive tape 222 of the third layer is perpendicular to the setting direction of the first conductive tape 212 of the first layer, thus forming an array structure. For example, this solution can use 20 first conductive tapes 212 and 20 third conductive tapes 222, resulting in 400 intersection points between the first and third conductive tapes, i.e., 400 pressure sampling points. Pressure is detected through these sampling points. Each pressure sampling point of the first conductive tape 212 can output a pressure detection signal to the pressure acquisition device 30 via a first contact, and each pressure sampling point of the third conductive tape 222 can output a pressure detection signal to the pressure acquisition device 30 via a third contact. The specific number of first conductive tapes 212 and third conductive tapes 222 can be increased or decreased according to actual conditions and user needs to meet different requirements. In this solution, the pressure sensing pad 20 consists of three layers from bottom to top: a first layer, a second layer, and a third layer. The pressure-sensitive material of the second layer can be a piezoelectric material. When subjected to pressure and undergoing mechanical deformation, the positive and negative charge centers inside it undergo relative displacement, thereby generating charges on the material surface and forming an electric field and voltage. In this way, the second layer, which is located between the first and third layers, can complete pressure detection and output the corresponding pressure detection signal to the pressure acquisition device 30.

[0042] It should be noted that the pressure acquisition device 30 can convert the pressure detection signal into pressure data, and then transmit the pressure data of the seat cushion 10 to the host computer 40 at a rate of 20 frames per second. Taking the setting of 20 first conductive tapes 212 and 20 third conductive tapes 222 as an example, essentially the host computer 40 receives a 20x20 pixel image. To identify the specific category of this image information: upright sitting posture, left-leaning sitting posture, and right-leaning sitting posture, this solution designs a neural network to cluster the pressure data. The network structure is: convolution-pooling-convolution-activation. This neural network is trained using the pressure dataset collected by the pressure acquisition device 30. The training process can be as follows: first, collect 1000 to 2000 sitting pressure distribution samples using this solution, then manually label these samples, and finally divide the samples into an 80% training set and a 20% test set, and complete the training through the neural network. Specific image information can be found in [reference needed]. Figure 4 , Figure 5 and Figure 6 ,in Figure 4 Represents left-leaning, Figure 5 The representative sits upright. Figure 6 It represents right-leaning tendencies.

[0043] In one embodiment, multiple first conductive tapes 212 and multiple third conductive tapes 222 form a row and column structure, with the multiple first conductive tapes 212 forming M rows and the multiple third conductive tapes 222 forming N columns. The intersections of the multiple first conductive tapes 212 and the multiple third conductive tapes 222 form multiple sampling points. The pressure sampling device 30 sequentially collects the pressure detection signal from the sampling point in the first row and first column, starting from the first row and first column, and then sequentially collects the pressure detection signal from the sampling point in the second row and first column to the sampling point in the second row and N column, until the pressure detection signal of the sampling point in the M row and N column is collected.

[0044] In this embodiment, each row of sampling points can output a pressure detection signal to the pressure acquisition device 30 through its corresponding first contact, and each column of sampling points can output a pressure detection signal to the pressure acquisition device 30 through its corresponding third contact. It is understood that, to avoid the cumbersome output of multiple contacts and to ensure the orderly output of data, the pressure acquisition device 30 can acquire pressure detection signals sequentially. For example, the selector first selects the sampling point in the first row and first column, and then selects each sampling point in each column of the first row for acquisition; after the first row is acquired, the sampling point in the first column of the second row is selected to begin acquisition, and then each sampling point in each column of the second row is selected for acquisition, and so on, until the pressure detection signal of the sampling point in the Mth row and Nth column is acquired. In practical applications, the acquisition of 400 points takes approximately 12ms, the latency of wireless data transmission is less than 15ms, the latency of the host computer's 40 neural network is less than 10ms, and the overall data acquisition, transmission, and feedback time is within 50ms, demonstrating good real-time performance.

[0045] Reference Figure 7 In one embodiment, the pressure acquisition device 30 includes: The first multiplexer 31 is connected to the first contact on the first flexible printed circuit 213; The third multiplexer 32 is connected to the third contact on the third flexible printed circuit 223; The main control chip 33 is electrically connected to the first multiplexer 31 and is also electrically connected to the third multiplexer 32. The main control chip 33 is used to control one of the first multiplexers 31 and one of the third multiplexers 32 to be turned on, receive the pressure detection signals output by the first contact and the third contact, and convert the pressure detection signals into pressure data and output them. The wireless communication circuit 34 is electrically connected to the main control chip 33 and is communicatively connected to the host computer 40. The wireless communication circuit 34 is used to transmit the pressure data to the host computer 40 and is also used to output the sitting posture signal output by the host computer 40 to the main control chip 33. The main control chip 33 is used to output a warning signal when it detects that the user's posture is poor based on the posture signal.

[0046] In this embodiment, the first multiplexer 31 and the third multiplexer 32 can select a 32-channel multiplexer, thus the flexible pressure sensing array of this solution can be upward compatible with a 32x32 array. More multiplexers can be configured according to actual conditions and user needs to achieve compatibility with larger array sizes. The circuit structure of the main control chip 33 can be referred to... Figure 8The main control chip 33, when acquiring pressure detection signals, can control one channel of the first multiplexer 31 and one channel of the third multiplexer 32 to conduct, thereby acquiring the pressure detection signals output from the corresponding acquisition points. The specific acquisition sequence can be referred to the description in the above embodiment. The main control chip 33 then converts the pressure detection signals into pressure data and outputs them to the host computer 40 through the wireless communication circuit 34. The wireless communication circuit 34 can be composed of a wireless communication chip, which uses wireless communication technology. Wireless communication is a communication method that uses the characteristic that electromagnetic waves can propagate in free space to exchange information. The wireless communication chip can communicate with the host computer 40 using Bluetooth, 4G, 5G, or WiFi. In addition, the main control chip 33 can also communicate with the host computer 40 using wired communication. After the host computer 40 judges the user's sitting posture based on the pressure data, it can output a sitting posture signal to the main control chip 33; the main control chip 33, when determining that the user's sitting posture is poor based on the sitting posture signal, outputs a warning signal to remind the user.

[0047] In one embodiment, the intelligent corrective cushion system further includes: A voltage divider circuit is used to divide the pressure detection signals output by the first multiplexer 31 and the third multiplexer 32 and output them to the main control chip 33. The input terminal of the voltage divider circuit is connected to the output terminal of the first multiplexer 31 and the third multiplexer 32.

[0048] In this embodiment, a voltage divider circuit is used to divide the electrical signals output from the first multiplexer 31 and the third multiplexer 32, i.e., the pressure detection signal, to prevent the main control chip 33 from being damaged due to excessively high voltage. Furthermore, the voltage divider circuit can adjust the voltage output to the main control chip 33 to be within its detection range.

[0049] Reference Figure 9 In one embodiment, the voltage divider circuit includes: Multiple voltage divider resistors R1 are provided, with the first end of each voltage divider resistor R1 connected one-to-one to the output terminals of the first multiplexer 31 and the third multiplexer 32, and the second end of each voltage divider resistor R1 connected one-to-one to multiple input terminals of the main control chip 33.

[0050] In this embodiment, multiple voltage divider resistors R1 are set for multiple first contacts and third contacts. The voltage divider resistors R1 play a voltage dividing role. Specifically, when the sampling point in the pressure sensing pad 20 is subjected to pressure, the resistance of the pressure-sensitive material changes, and the voltage it receives changes accordingly. However, the resistance of the voltage divider resistors R1 remains unchanged, so the voltage value collected by the main control chip 33 also changes accordingly. Figure 8 In the diagram, for ease of understanding, the sampling point corresponding to the varistor material is replaced with the varistor R2.

[0051] Reference Figure 10 In one embodiment, the intelligent corrective cushion system further includes: A light warning circuit 51, connected to the main control chip 33, is used to operate when it receives a warning signal output by the main control chip 33; and / or, A vibration warning circuit 52, connected to the main control chip 33, is configured to operate upon receiving a warning signal output by the main control chip 33; and / or, The voice warning circuit 53 is connected to the main control chip 33 and is used to operate when it receives a warning signal output by the main control chip 33.

[0052] In this embodiment, the light warning circuit 51 can be composed of an LED light. When the light warning circuit 51 receives a warning signal output by the main control chip 33, the LED light illuminates, thereby warning the user of improper posture. The vibration warning circuit 52 can be composed of a vibration device, which warns the user of improper posture through vibration. The voice warning circuit 53 can be composed of a voice chip, which warns the user of improper posture by emitting a voice message, such as "improper posture." In this embodiment, one or more of the light warning circuit 51, vibration warning circuit 52, and voice warning circuit 53 can be configured according to actual conditions and user needs.

[0053] Reference Figure 10 In one embodiment, the intelligent corrective cushion system further includes: The reset circuit 60 is connected to the reset terminal of the main control chip 33. The reset circuit 60 is used to output a reset signal to the main control chip 33 when triggered by the user.

[0054] In this embodiment, the reset circuit 60 can be a reset button. Triggering the button outputs a reset signal to the main control chip 33. Upon receiving the reset signal, the main control chip 33 can control the entire program of the intelligent corrective cushion system to reset, thus preventing the intelligent corrective cushion system from malfunctioning and becoming unrecoverable.

[0055] Reference Figure 10In one embodiment, the intelligent corrective cushion system further includes: A debugging interface 70 is used to connect to an external debugging device, and the debugging interface 70 is connected to the debugging terminal of the main control chip 33; The main control chip 33 is used to receive debugging signals output by external devices through the debugging interface 70.

[0056] In this embodiment, the debugging interface 70 can be configured with a corresponding interface according to the type of external device, such as a USB interface, a UART interface, or an SPI interface. After the external device is connected to the intelligent corrective cushion system through the debugging interface 70, the operating program of the main control chip 33 in the pressure acquisition device 30 can be adjusted.

[0057] Reference Figure 1 In one embodiment, the intelligent corrective cushion system further includes: A power supply circuit 80 is provided, the output terminal of which is connected to the power supply terminal of the pressure acquisition device 30. The power supply circuit 80 is used to provide operating voltage to the pressure acquisition device 30.

[0058] In this embodiment, the power supply circuit 80 can be implemented using a DC-DC circuit or a power chip. The power supply circuit 80 can provide a suitable operating voltage for the pressure acquisition device 30, so as to prevent the pressure acquisition device 30 from receiving a high operating voltage that could damage the device, or from receiving a low operating voltage that could prevent the device from working properly.

[0059] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An intelligent correction cushion system, characterized by, The utility model relates to a pressure sensing cushion, and specifically relates to a pressure sensing cushion and a pressure sensing cushion system. The utility model discloses a pressure sensing cushion, which comprises a cushion, a pressure sensing mat arranged in the cushion, a flexible pressure sensing array arranged in the pressure sensing mat, the pressure sensing mat being used for detecting the pressure intensity of a user's sitting posture and outputting corresponding pressure detection signals, a pressure collecting device arranged at the edge of the cushion, the pressure collecting device being electrically connected with the pressure sensing mat, the pressure collecting device being used for collecting the pressure detection signals output by the pressure sensing mat, converting the pressure detection signals into pressure data and then outputting the pressure data, and an upper computer being communicatively connected with the pressure collecting device, the upper computer being used for receiving the pressure data output by the pressure collecting device, judging the user's sitting posture according to the pressure data and then outputting a sitting posture signal to the pressure collecting device. The pressure sensing mat comprises a first layer, a second layer and a third layer. The first layer comprises a first flexible cloth, a plurality of first conductive adhesive tapes, a first flexible printed circuit, the first flexible printed circuit being provided with a same number of first contacts as the number of the first conductive adhesive tapes, each first contact corresponding to one first conductive adhesive tape, and the first flexible printed circuit being electrically connected with the pressure collecting device. The second layer is a pressure-sensitive material layer, and the second layer is arranged on the conductive adhesive surface of the first layer.

2. The intelligent correction cushion system of claim 1, wherein, The third layer comprises a third flexible cloth, a plurality of third conductive adhesive tapes, a third flexible printed circuit, the third flexible printed circuit being provided with a same number of third contacts as the number of the third conductive adhesive tapes, each third contact corresponding to one third conductive adhesive tape, and the third flexible printed circuit being electrically connected with the pressure collecting device. The side of the third layer, on which the plurality of third conductive adhesive tapes are arranged, is arranged on the second layer. The plurality of first conductive adhesive tapes and the plurality of third conductive adhesive tapes form a row-column structure, the plurality of first conductive adhesive tapes form M rows, the plurality of third conductive adhesive tapes form N columns, the intersection of the plurality of first conductive adhesive tapes and the plurality of third conductive adhesive tapes forms a plurality of collection points, the pressure collecting device collects the pressure detection signals of the collection points from the first row and the first column to the first row and the Nth column, then collects the pressure detection signals of the collection points from the second row and the first column to the second row and the Nth column, and finally collects the pressure detection signals of the collection points from the Mth row and the Nth column. The pressure collecting device comprises a first multiplexer corresponding to the first contacts on the first flexible printed circuit, a third multiplexer corresponding to the third contacts on the third flexible printed circuit, and a pressure data processing unit. ​ ​ ​ ​ ​ ​ ​ 3. The intelligent correction cushion system of claim 2, wherein, ​ 4. The intelligent correction cushion system of claim 2, wherein, ​ ​ ​ A master control chip is electrically connected with the first multiplexer, and is also electrically connected with the third multiplexer. The master control chip is used to control one path of the first multiplexer and one path of the third multiplexer to be opened, receive the pressure detection signals output by the first contact and the third contact, and output the pressure detection signals converted into pressure data. A wireless communication circuit is electrically connected with the master control chip, and is in communication connection with the upper computer. The wireless communication circuit is used to transmit the pressure data to the upper computer, and is also used to output the sitting posture signal output by the upper computer to the master control chip. The master control chip is used to output a warning signal when it is identified according to the sitting posture signal that the user's sitting posture is poor.

5. The intelligent correction cushion system of claim 4, wherein, Further comprising: A voltage dividing circuit, an input end of the voltage dividing circuit is connected with an output end of the first multiplexer, and the input end of the voltage dividing circuit is also connected with an output end of the third multiplexer. An output end of the voltage dividing circuit is connected with an input end of the master control chip. The voltage dividing circuit is used to output the pressure detection signals output by the first multiplexer and the third multiplexer to the master control chip after voltage division.

6. The intelligent correction cushion system of claim 5, wherein, The voltage dividing circuit comprises: A plurality of voltage dividing resistors, a first end of each voltage dividing resistor is connected with an output end of the first multiplexer and an output end of the third multiplexer one by one, and a second end of each voltage dividing resistor is connected with a plurality of input ends of the master control chip one by one.

7. The intelligent correction cushion system of claim 4, wherein, Further comprising: A light warning circuit connected with the master control chip, the light warning circuit is used to work when receiving the warning signal output by the master control chip; And / or, A vibration warning circuit connected with the master control chip, the vibration warning circuit is used to work when receiving the warning signal output by the master control chip; and / or, A voice warning circuit connected with the master control chip, the voice warning circuit is used to work when receiving the warning signal output by the master control chip.

8. The intelligent correction cushion system of claim 4, wherein, Further comprising: A reset circuit connected with a reset end of the master control chip, the reset circuit is used to output a reset signal to the master control chip when being triggered by a user.

9. The intelligent correction cushion system of claim 4, wherein, Further comprising: A debugging interface used to access an external debugging device, the debugging interface is connected with a debugging end of the master control chip; The master control chip is used to receive a debugging signal output by an external device through the debugging interface.

10. The intelligent correction cushion system of any one of claims 1-9, wherein, Further comprising: A power supply circuit, an output end of the power supply circuit is connected with a power supply end of the pressure acquisition device, and the power supply circuit is used to provide working voltage for the pressure acquisition device.

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