Piezoresistive cloth assembly, piezoresistive control system and intelligent furniture

Abstract

The utility model provides a piezoresistive cloth assembly, a piezoresistive control system and intelligent furniture, and the piezoresistive cloth assembly comprises a flexible supporting layer which is arranged at the bottommost layer; the flexible multi-region conductive layer is arranged above the flexible supporting layer and comprises a plurality of independent conductive regions; the flexible piezoresistive layer is arranged above the flexible multi-region conductive layer and is electrically conducted with the plurality of conductive regions respectively; the flexible single-region conductive layer is arranged above the flexible piezoresistive layer and comprises a complete conductive region, and the complete conductive region is electrically conducted with the flexible piezoresistive layer; the flexible contact layer is arranged above the flexible single-region conductive layer, a plurality of induction regions corresponding to the independent conductive regions are arranged on the flexible contact layer, and the resistance change of the flexible piezoresistive layer corresponds to the pressing of the induction regions; according to the utility model, the problem of insufficient convenience caused by interaction with people through a button, a switch and other entity keys in the smart home in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of smart home, in particular to a piezoresistive cloth assembly, a piezoresistive control system and smart furniture. Background Art

[0002] Smart home, a concept that has become increasingly popular with the continuous progress of technology, refers to the automation and intelligent management of the home environment through various smart devices and systems. These systems can remotely control multiple aspects such as lighting, temperature, security, and entertainment in the home, greatly improving the comfort and convenience of living.

[0003] Interactive control is one of the core functions in smart home systems. It allows users to communicate bidirectionally with smart devices in the home. Users can operate the devices through simple voice commands or touch controls, and the devices can also automatically adjust settings according to the user's usage habits and preferences to achieve a more personalized living experience.

[0004] Most of the existing smart home devices achieve interaction with people through physical buttons such as buttons and switches, requiring users to give a limited number of control instructions at a fixed position. However, with the pursuit of convenience by consumers, there is an increasing need for a more convenient way to issue instructions for interaction. Summary of the Utility Model

[0005] In view of the above-mentioned disadvantages of the prior art, the technical problem to be solved by the utility model is to provide a piezoresistive cloth assembly, a piezoresistive control system and smart furniture, so as to solve the problem of insufficient convenience brought by the interaction between smart home and people through physical buttons such as buttons and switches in the prior art.

[0006] To solve the above technical problem, the utility model provides a piezoresistive cloth assembly, including:

[0007] A flexible support layer, which is arranged at the bottom layer;

[0008] A flexible multi-zone conductive layer, which is arranged above the flexible support layer and includes a plurality of independent conductive regions;

[0009] A flexible piezoresistive layer, which is arranged above the flexible multi-zone conductive layer and is electrically connected to the plurality of conductive regions respectively. Under the action of pressure, the resistance on the flexible piezoresistive layer will change;

[0010] A flexible single-zone conductive layer, which is arranged above the flexible piezoresistive layer and includes a complete conductive region, and the complete conductive region is electrically connected to the flexible piezoresistive layer;

[0011] A flexible contact layer is disposed above the flexible single-zone conductive layer. A plurality of induction regions corresponding to the independent conductive regions are provided on the flexible contact layer. When an induction region is pressed, the resistance of the flexible piezoresistive layer corresponding to the induction region changes.

[0012] As a more preferred embodiment, the flexible piezoresistive layer is made of piezoresistive cloth material, which is a semiconductor or alloy material that can change its resistance value according to the applied pressure, and has characteristics such as high sensitivity, fast response, stability, durability, temperature compensation, and miniaturization.

[0013] As a more preferred embodiment, the flexible single-zone conductive layer is made of conductive cloth material, which is a special textile material. It achieves conductivity by adding conductive materials such as metal fibers, carbon fibers, or conductive polymers into the fibers, and has excellent conductivity, flexibility, durability, electromagnetic shielding ability, thermal stability, and processability, and is widely used in the fields of smart home and smart wearable technologies.

[0014] As a more preferred embodiment, the flexible multi-zone conductive layer is sewn from conductive cloth material and insulating material. The independent conductive regions are made of conductive cloth material, and insulating material is sewn around the independent conductive regions, which very conveniently divides the independent conductive regions.

[0015] As a more preferred embodiment, the flexible support layer and the flexible contact layer are made of insulating material, which can prevent water vapor from seeping in and contacting the conductive layer to cause a short circuit, interfering with normal operation.

[0016] As a more preferred embodiment, the outer sides of the flexible support layer and the flexible contact layer are coated with waterproof material.

[0017] To solve the above problems, the present utility model further provides a piezoresistive control system, including:

[0018] The above-mentioned piezoresistive cloth assembly;

[0019] A control circuit assembly, the control circuit assembly includes a controller. When the piezoresistive cloth assembly is connected to the control circuit assembly, when an induction region is pressed, the resistance of the flexible piezoresistive layer corresponding to the induction region changes, thereby causing a voltage change, and the controller outputs a preset control instruction according to the voltage change.

[0020] As a more preferred embodiment, the control circuit assembly includes a power supply and a plurality of fixed resistors corresponding to the independent conductive regions. One end of each fixed resistor is electrically connected to the power supply, and the other end is electrically connected to the independent conductive region and the controller. The flexible single-region conductive layer is grounded. According to the principle of resistance voltage division, when the resistance of the flexible piezoresistive layer corresponding to the sensing region changes, the corresponding voltage thereon also changes proportionally. The controller outputs a preset control command by detecting these voltage changes.

[0021] As a more preferred embodiment, the piezoresistive control system further includes a plurality of analog-to-digital converters corresponding to the fixed resistors. The other end of each fixed resistor is connected to the controller through an analog-to-digital converter. The analog-to-digital converter converts continuous analog signals into discrete digital signals, which allows the controller to process these signals more conveniently, improving the reliability, compatibility, and flexibility of the system.

[0022] To solve the above problems, the present utility model also provides an intelligent furniture, which is characterized in that it includes the above-mentioned piezoresistive control system.

[0023] As described above, the piezoresistive fabric assembly, piezoresistive control system, and intelligent furniture of the present utility model have the following beneficial effects: In the piezoresistive fabric assembly of the present utility model, the regions of the flexible piezoresistive layer corresponding to the multiple sensing regions of the flexible contact layer can be regarded as multiple equivalent piezoresistive variable resistors. By pressing the sensing regions, the resistance values of the corresponding pressure-sensitive resistors can be changed. By detecting these resistance value changes, data such as which sensing regions are touched, the pressing force, and the number of times can be obtained.

[0024] The piezoresistive control system of the present utility model utilizes the above-mentioned piezoresistive fabric assembly, connects the piezoresistive fabric assembly to the control circuit assembly, obtains the voltage changes of the flexible piezoresistive layer corresponding to the sensing regions through the controller, and the controller outputs a preset control command according to the voltage changes.

[0025] The intelligent furniture of the present utility model adopts the above-mentioned piezoresistive control system. The piezoresistive fabric assembly can not only serve as the soft package of the intelligent furniture to meet the sitting, leaning, and lying needs of users; at the same time, when the user presses the sensing region, the intelligent furniture can be controlled. Moreover, the soft package has a large range, and the area that the user can press also increases accordingly, eliminating the need to frequently get up to touch a designated position, which is more convenient. More specifically, in this embodiment, the intelligent furniture can be an electric bed, and the piezoresistive fabric assembly is laid on the bed board; the intelligent furniture can also be a sofa, and the piezoresistive fabric assembly is directly laid on the sitting and leaning region of the sofa; it is widely applicable to all kinds of furniture that need to interact with users for control.

[0026] In summary, the piezoresistive fabric assembly, piezoresistive control system, and smart furniture of the present utility model achieve that the entire surface of the smart furniture upholstery is a touch area through the piezoresistive fabric assembly that can upholster furniture and provide pressure sensing control at the same time. Users do not need to get up frequently to touch a designated position, and the interaction is more convenient, solving the problem of insufficient convenience in the prior art of smart home interacting with people through physical buttons such as buttons and switches. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It shows a schematic structural diagram of the piezoresistive fabric assembly and piezoresistive control system of the present utility model;

[0028] Figure 2 It shows another equivalent circuit diagram of the piezoresistive control system of the present utility model.

[0029] DESCRIPTION OF REFERENCE NUMERALS

[0030] 1 Piezoresistive fabric assembly

[0031] 11 Flexible support layer

[0032] 12 Flexible multi-zone conductive layer

[0033] 121 Independent conductive area

[0034] 13 Flexible piezoresistive layer

[0035] 14 Flexible single-zone conductive layer

[0036] 15 Flexible contact layer

[0037] 2 Fixed resistor

[0038] 3 Analog-to-digital converter DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0040] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions under which the present utility model can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed by the present utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is only limited by the claims of the published patent. The terms used herein are only for describing specific embodiments and are not intended to limit this application. Spatially related terms, such as "upper", "lower", "left", "right", "below", "beneath", "lower part", "above", "upper part", etc., may be used in the text to facilitate the description of the relationship between one element or feature shown in the figure and another element or feature.

[0041] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed", "held" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] Furthermore, as used herein, the singular forms "a", "an", and "the" are also intended to include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising", "including" indicate the presence of the described features, operations, elements, components, items, types, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, types, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or meaning any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B and C". An exception to this definition only occurs when the combination of elements, functions, or operations is inherently mutually exclusive in some way.

[0043] As Figures 1 to 2 shown, the present utility model provides a piezoresistive cloth assembly 1, including:

[0044] A flexible support layer 11, and the flexible support layer 11 is arranged at the bottommost layer;

[0045] The flexible multi - zone conductive layer 12 is disposed above the flexible support layer 11 and includes a plurality of independent conductive regions 121;

[0046] The flexible piezoresistive layer 13 is disposed above the flexible multi - zone conductive layer 12 and is electrically connected to the plurality of conductive regions respectively. When the flexible piezoresistive layer is under pressure, its resistance changes;

[0047] The flexible single - zone conductive layer 14 is disposed above the flexible piezoresistive layer 13 and includes a complete conductive region, and the complete conductive region is electrically connected to the flexible piezoresistive layer 13;

[0048] The flexible contact layer 15 is disposed above the flexible single - zone conductive layer 14. A plurality of sensing regions corresponding to the independent conductive regions 121 are provided on the flexible contact layer 15. When the sensing regions are pressed, the resistance change of the flexible piezoresistive layer 13 corresponding to the sensing regions occurs.

[0049] In order to better introduce the piezoresistive fabric assembly 1 of the present invention, the following specific application is now combined for illustration: For the piezoresistive fabric assembly 1 of the present invention, the regions of the flexible piezoresistive layer 13 corresponding to the plurality of sensing regions of the flexible contact layer 15 can be regarded as a plurality of equivalent piezoresistive variable resistors. By pressing the sensing regions, the resistance values of the corresponding pressure - sensitive resistors can be caused to change. By detecting these resistance value changes, data such as which sensing regions are touched, the pressing force, and the number of times can be obtained.

[0050] In this embodiment, as Figure 1 shown, the flexible piezoresistive layer 13 is made of piezoresistive fabric material. The piezoresistive fabric material is a semiconductor or alloy material whose resistance value can change according to the applied pressure, and has characteristics such as high sensitivity, fast response, stability, durability, temperature compensation, and miniaturization. Due to its high sensitivity and fast response ability to pressure changes, the piezoresistive material plays an important role in many fields such as industry, medical treatment, automobiles, and aerospace, and is an indispensable part of modern pressure measurement technology. With the development of technology, the application range and performance of the piezoresistive material are still continuously improving.

[0051] In this embodiment, as Figure 1As shown, the flexible single-zone conductive layer 14 is made of conductive fabric material. Conductive fabric material is a special textile material that achieves electrical conductivity by adding conductive materials such as metal fibers, carbon fibers, or conductive polymers into the fibers. It has excellent electrical conductivity, flexibility, durability, electromagnetic shielding ability, thermal stability, and processability, and is widely used in electromagnetic interference shielding of electronic devices, electrostatic discharge protection of sensitive components, integration of smart clothing, medical monitoring devices, manufacturing of heating elements, dimming systems of smart buildings, and electromagnetic shielding of aerospace equipment. With technological progress, the application fields of conductive fabric continue to expand, making it an indispensable material in the modern technology field.

[0052] In this embodiment, as Figure 1 shown, the flexible multi-zone conductive layer 12 is sewn from conductive fabric material and insulating material. The independent conductive regions 121 are made of conductive fabric material, and insulating material is sewn around the periphery of the independent conductive regions 121, and the insulating material very conveniently divides into multiple independent conductive regions 121.

[0053] In this embodiment, as Figure 1 shown, the flexible support layer 11 and the flexible contact layer 15 are made of insulating material. The insulating material prevents water vapor from seeping in and contacting the conductive layer to cause a short circuit, which interferes with normal operation.

[0054] In this embodiment, as Figure 1 shown, the outer sides of the flexible support layer 11 and the flexible contact layer 15 are coated with waterproof material.

[0055] To solve the above problems, as Figures 1 to 2 shown, the present utility model further provides a piezoresistive control system, including:

[0056] The above-mentioned piezoresistive cloth assembly 1;

[0057] A control circuit assembly, the control circuit assembly includes a controller. Connect the piezoresistive cloth assembly 1 to the control circuit assembly. Press the sensing area, and the resistance change of the flexible piezoresistive layer 13 corresponding to the sensing area is sensed, thereby causing a voltage change. The controller outputs a preset control instruction according to the voltage change.

[0058] To better introduce the piezoresistive control system of the present utility model, the following specific applications are now combined for illustration: The piezoresistive control system of the present utility model utilizes the above-mentioned piezoresistive cloth assembly 1, connects the piezoresistive cloth assembly 1 to the control circuit assembly, obtains the voltage change of the flexible piezoresistive layer 13 corresponding to the sensing area through the controller, and the controller outputs a preset control instruction according to the voltage change.

[0059] In this embodiment, as Figure 1As shown, the control circuit assembly includes a power supply and a plurality of fixed resistors 2 corresponding to the independent conductive regions 121. One end of the fixed resistor 2 is electrically connected to the power supply, and the other end is electrically connected to the independent conductive region 121 and the controller. The flexible single-region conductive layer 14 is grounded. According to the principle of resistor voltage division, when the resistance of the flexible piezoresistive layer 13 corresponding to the sensing region changes, the corresponding voltage thereon also changes proportionally. The controller outputs preset control instructions by detecting these voltage changes. For example, Figure 2 As shown, it is the equivalent control circuit of the piezoresistive control system in another embodiment.

[0060] In this embodiment, as Figure 1 shown, the piezoresistive control system further includes a plurality of analog-to-digital converters 3 corresponding to the fixed resistors 2. The other end of the fixed resistor 2 is connected to the controller through the analog-to-digital converter 3. The analog-to-digital converter converts continuous analog signals into discrete digital signals. This conversion allows the controller to process these signals more conveniently, improving the reliability, compatibility, and flexibility of the system.

[0061] To solve the above problems, the present utility model also provides an intelligent furniture, which is characterized in that it includes the above-mentioned piezoresistive control system.

[0062] To better introduce the intelligent furniture of the present utility model, the following specific applications are now combined for illustration: The intelligent furniture of the present utility model adopts the above-mentioned piezoresistive control system. The piezoresistive cloth assembly 1 can not only be used as the soft package of the intelligent furniture to meet the sitting, leaning, and lying needs of users; at the same time, when the user presses the sensing region, the intelligent furniture can be controlled. Moreover, the soft package has a large range, and the area that the user can press also increases accordingly, eliminating the need to frequently get up to touch a designated position, which is more convenient. More specifically, in this embodiment, the intelligent furniture can be an electric bed, and the piezoresistive cloth assembly 1 is laid on the bed board; the intelligent furniture can also be a sofa, and the piezoresistive cloth assembly 1 is directly laid on the sitting and leaning region of the sofa; it is widely applicable to all kinds of furniture that need to interact with users for control. It can be seen that the piezoresistive cloth assembly, piezoresistive control system, and intelligent furniture of the present utility model realize that the entire surface of the soft package of the intelligent furniture is a touch control area through the piezoresistive cloth assembly 1 that can be used as the furniture soft package and simultaneously provide pressure sensing control. The user does not need to frequently get up to touch a designated position, and the interaction is more convenient, solving the problem of insufficient convenience in the prior art of smart home interacting with people through physical buttons such as buttons and switches.

[0063] Furthermore, in this embodiment, the controller collects the voltage changes corresponding to each touch area through the analog-to-digital converter 3. According to the measured pressure values and change trends, different operating actions of the human hand are recognized, such as: single click: a single sharp pressure change within a short time; double click: two consecutive sharp pressure changes within a short time; long press: a long-term continuous pressure; slide: the pressure point continuously moves between different conductive areas.

[0064] Furthermore, in this embodiment, based on the measurement data of the piezoresistive cloth assembly 1, the control circuit assembly uses the state machine algorithm to judge the finger actions and outputs the recognition results to the devices that need to interact. The specific steps include:

[0065] 1. Data acquisition: The analog-to-digital converter 3 is used to collect the pressure value changes of each channel.

[0066] 2. Data processing: The collected data is preprocessed to extract feature values.

[0067] 3. Action recognition: Based on the state machine algorithm, the feature values are analyzed to judge whether the current gesture is a single click, double click, long press or other actions.

[0068] 4. Output interaction: The judgment result is converted into a control signal and output to drive the corresponding device to respond to the operation.

[0069] It should be noted that the devices here can be not only the smart furniture itself, but also any device that communicates with the smart furniture.

[0070] In summary, the piezoresistive cloth assembly, piezoresistive control system and smart furniture of the present utility model have the following advantages:

[0071] 1. Flexibility and comfort: The flexible piezoresistive cloth assembly 1 provides a soft touch feeling and is suitable as the soft package material for the furniture surface.

[0072] 2. High sensitivity: The flexible piezoresistive layer 13 made of piezoresistive cloth material can change its resistance value according to the pressure change, and has high sensitivity and fast response characteristics.

[0073] 3. Structural diversity: The flexible multi-zone conductive layer 12 is sewn by conductive cloth and insulating material, realizing the effective division of multiple independent conductive areas 121.

[0074] 4. Stability and durability: The flexible single-zone conductive layer 14 made of conductive cloth material has good durability, electromagnetic shielding ability and thermal stability.

[0075] 5. Waterproof and moisture-proof: The flexible support layer 11 and the flexible contact layer 15 adopt insulating materials and are coated with waterproof materials to avoid moisture interference and improve the product life.

[0076] 6. Simple Control: The piezoresistive control system, through control circuit components and a controller, outputs voltage changes according to resistance changes to achieve a simple and intuitive control method.

[0077] 7. Enhanced Analog-to-Digital Conversion: The use of the analog-to-digital converter 3 makes it easier for the controller to process signals, enhancing the reliability and flexibility of the system.

[0078] 8. Integration with Smart Furniture: The piezoresistive control system is integrated into smart furniture, making the furniture surface a touch area and providing a convenient interaction method.

[0079] 9. Multi-Functional Integration: Smart furniture can achieve various control functions according to the sensing area of the piezoresistive fabric component 1 to meet different usage requirements.

[0080] 10. Optimization of User Interaction: The entire upholstered surface can be used as a touch area, providing a more convenient interaction experience than traditional buttons or switches.

[0081] The piezoresistive fabric component 1 and the piezoresistive control system of this patent provide an innovative interaction method. Through a flexible multi-layer structure, pressure sensing and resistance changes are achieved, and then smart furniture is controlled. The flexibility, high precision, and high sensitivity of the component make it suitable as the upholstery material for furniture surfaces, and it also has good durability and stability. The waterproof and moisture-proof design further improves the practicality and reliability of the product. The analog-to-digital converter 3 of the control system enhances the signal processing ability, improving the compatibility and flexibility of the overall system. The integration of smart furniture with the piezoresistive control system enables the furniture surface to be used as a touch area, providing an intuitive and convenient interaction method, solving the problem of inconvenient interaction of traditional smart home devices, and providing a more comfortable and convenient usage experience for users. Therefore, this utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0082] The above embodiments are only illustrative of the principles and effects of this utility model and are not used to limit this utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by this utility model should still be covered by the claims of this utility model.

Claims

1. A piezoresistive fabric assembly (1), characterized in that, Comprising: A flexible support layer (11), which is arranged at the bottommost layer; A flexible multi-zone conductive layer (12), which is arranged above the flexible support layer (11) and includes a plurality of independent conductive regions (121); A flexible piezoresistive layer (13), which is arranged above the flexible multi-zone conductive layer (12) and is electrically connected to the plurality of conductive regions respectively. When the flexible piezoresistive layer is under pressure, its resistance will change; A flexible single-zone conductive layer (14), which is arranged above the flexible piezoresistive layer (13) and includes a complete conductive region. The complete conductive region is electrically connected to the flexible piezoresistive layer (13); A flexible contact layer (15), which is arranged above the flexible single-zone conductive layer (14). A plurality of induction regions corresponding to the independent conductive regions (121) are provided on the flexible contact layer (15). When the induction regions are pressed, the resistance change of the flexible piezoresistive layer (13) corresponding to the induction regions occurs.

2. The piezoresistive fabric assembly (1) according to claim 1, characterized in that: The flexible piezoresistive layer (13) is made of piezoresistive cloth material.

3. The piezoresistive fabric assembly (1) according to claim 1, characterized in that: The flexible single-zone conductive layer (14) is made of conductive cloth material.

4. The piezoresistive fabric assembly (1) according to claim 1, wherein: The flexible multi-zone conductive layer (12) is sewn from conductive cloth material and insulating material. The independent conductive regions (121) are made of conductive cloth material, and insulating material is sewn around the independent conductive regions (121).

5. The piezoresistive fabric assembly (1) according to claim 1, characterized in that: The flexible support layer (11) and the flexible contact layer (15) are made of insulating material.

6. The piezoresistive fabric assembly (1) according to claim 1, wherein: The outer sides of the flexible support layer (11) and the flexible contact layer (15) are coated with waterproof material.

7. A piezoresistive control system, characterized in that, Comprising: The piezoresistive cloth assembly (1) according to any one of claims 1 to 6; A control circuit assembly, which includes a controller. When the piezoresistive cloth assembly (1) is connected to the control circuit assembly, when the induction regions are pressed, the resistance change of the flexible piezoresistive layer (13) corresponding to the induction regions occurs, thereby causing a voltage change. The controller outputs a preset control instruction according to the voltage change.

8. The piezoresistive control system according to claim 7, wherein: The control circuit assembly includes a power supply and a plurality of fixed resistors (2) corresponding to the independent conductive regions (121). One end of the fixed resistor (2) is electrically connected to the power supply, and the other end is electrically connected to the independent conductive regions (121) and the controller. The flexible single-zone conductive layer (14) is grounded.

9. The piezoresistive control system according to claim 8, wherein: The piezoresistive control system further includes a plurality of analog-to-digital converters (3) corresponding to the fixed resistors (2). The other end of the fixed resistor (2) is connected to the controller through the analog-to-digital converter (3).

10. An intelligent furniture, characterized in that: Comprising the piezoresistive control system according to any one of claims 7 to 9.

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