A smart carpet and electronic device

Abstract

This utility model discloses a smart carpet and an electronic device. The smart carpet includes a carpet body, on which a pressure detection unit, a signal conversion unit, a power management unit, and a first wireless communication unit are provided. The pressure detection unit includes a woven fabric resistive pressure sensor. The signal conversion unit is electrically connected to both the pressure detection unit and the power management unit. The power management unit is electrically connected to the first wireless communication unit. When the pressure detection unit detects external pressure, such as when stepped on, the signal conversion unit outputs an enable signal corresponding to its operation to the power management unit. This causes the power management unit to output a working voltage to the first wireless communication unit, which then transmits a wireless signal to the external electronic device. Upon receiving the wireless signal, the electronic device performs operations such as turning on. Therefore, the electronic device of this utility model can be controlled by stepping on the smart carpet, making it convenient for users and offering the advantage of low power consumption.

Description

Technical Field

[0001] This utility model relates to the field of woven fabric technology, and in particular to a smart carpet and electronic device. Background Technology

[0002] Woven fabrics are ubiquitous in our lives, including various clothing items and the outer coverings of consumer products. Woven fabrics are widely known for their elasticity, softness, stretchability, and comfort. With the development of science and technology, some new types of woven fabrics with conductive and sensor functions have been researched and invented. Woven fabrics with conductive and sensor functions will change the application and structure of many products.

[0003] With the development of technology, things in our lives are becoming increasingly intelligent and convenient to operate. However, the switches of many electronic devices, such as lights, typically only have a small operating range. This is inconvenient for people who need to turn on a night light when getting up at night, as they have to fumble around for a long time to find the switch and are likely to accidentally touch other things along the way. If voice control is used, it can be disturbing for users who snore at night, causing the light to keep turning on and off. Utility Model Content

[0004] To address the aforementioned shortcomings, the technical problem to be solved by this utility model is to provide a smart carpet and electronic device, wherein the smart carpet is equipped with a woven resistive pressure sensor, allowing users to transmit wireless communication by touching the carpet to control the wirelessly connected electronic device, making it convenient for users and having the advantages of large touch area and low power consumption.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A smart carpet includes a carpet body, on which a pressure detection unit, a signal conversion unit, a power management unit, and a first wireless communication unit are disposed. The pressure detection unit includes at least one woven fabric resistive pressure sensor. The input terminal of the signal conversion unit is electrically connected to the pressure detection unit, and the output terminal of the signal conversion unit is electrically connected to the enable terminal of the power management unit. The power management unit is electrically connected to the first wireless communication unit. When external pressure is applied to the pressure detection unit, the signal conversion unit outputs an enable signal corresponding to its operation to the power management unit, enabling the power management unit to supply power to the first wireless communication unit, thus powering the first wireless communication unit to operate and transmit wireless signals.

[0007] In a preferred embodiment, the pressure detection unit includes at least two of the braided fabric resistive pressure sensors, and all of the braided fabric resistive pressure sensors are connected in parallel.

[0008] In a preferred embodiment, the signal conversion unit includes a comparator, the negative input terminal of which is electrically connected to one end of each of the braided fabric resistive pressure sensors, the other end of each of the braided fabric resistive pressure sensors is grounded, the positive input terminal of which is connected to a reference voltage, and the output terminal of which is electrically connected to the enable terminal of the power management unit.

[0009] In a preferred embodiment, the signal conversion unit further includes a voltage divider circuit for adjusting the magnitude of the reference voltage; the voltage divider circuit includes a first voltage divider resistor and a second voltage divider resistor, one end of the first voltage divider resistor is grounded, the other end of the first voltage divider resistor is electrically connected to the positive input terminal of the comparator and the other end of the second voltage divider resistor, and the other end of the second voltage divider resistor is connected to the reference voltage.

[0010] In a preferred embodiment, all the woven fabric resistive pressure sensors are evenly distributed on the carpet body.

[0011] An electronic device includes the aforementioned smart carpet and a second wireless communication unit, wherein the second wireless communication unit is wirelessly connected to the first wireless communication unit.

[0012] In a preferred embodiment, the first wireless communication unit and the second wireless communication unit are connected via Bluetooth.

[0013] In a preferred embodiment, the electronic device includes an electrically connected lamp and a lamp driving unit, wherein the lamp driving unit is electrically connected to the second wireless communication unit.

[0014] In a preferred embodiment, the electronic device further includes an anti-accidental start unit, which is electrically connected to the second wireless communication unit.

[0015] In a preferred embodiment, the anti-accidental activation unit includes a light detection unit or a time detection unit, wherein the time detection unit is used to detect the current time.

[0016] The beneficial effects of this utility model after adopting the above technical solution are:

[0017] The present invention relates to a smart carpet and electronic device. The smart carpet includes a carpet body, on which a pressure detection unit, a signal conversion unit, a power management unit, and a first wireless communication unit are installed. The pressure detection unit includes at least one woven fabric resistive pressure sensor. The input terminal of the signal conversion unit is electrically connected to the pressure detection unit, and the output terminal of the signal conversion unit is electrically connected to the enable terminal of the power management unit. The power management unit is electrically connected to the first wireless communication unit. In use, when external pressure is applied to the pressure detection unit, the impedance of the woven fabric resistive pressure sensor at the pressed position changes, causing the signal conversion unit to detect the user's touch. The signal conversion unit then outputs a corresponding enable signal to the power management unit, controlling the power management unit to operate and output a working voltage to the first wireless communication unit, enabling it to transmit a wireless signal to the electronic device with which it communicates wirelessly. Upon receiving the wireless signal, the electronic device performs actions such as turning on lights, thus meeting the user's needs. Due to the characteristics of the woven fabric resistive pressure sensor, the touch area is large, making user operation more convenient. Furthermore, since the power management unit and the first wireless communication unit do not operate when no external force is applied to the woven fabric resistive pressure sensor, energy consumption is reduced. Attached Figure Description

[0018] Figure 1 This is a circuit diagram of the smart carpet and lighting fixtures in the embodiment;

[0019] Figure 2 This is a schematic diagram of the structure of the smart carpet in this utility model;

[0020] Figure 3 This is a schematic diagram of the pressure detection using a braided fabric resistive pressure sensor in this utility model;

[0021] In the diagram: 1-carpet body, 2-pressure detection unit, 20-woven fabric resistive pressure sensor, 3-signal conversion unit, 30-comparator, 31-voltage divider circuit, 4-electronic equipment. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0024] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] like Figure 1 and Figure 2 As shown, according to an embodiment of the first aspect of this utility model, the smart carpet includes a carpet body 1. The carpet body 1 is provided with a pressure detection unit 2, a signal conversion unit 3, a power management unit, and a first wireless communication unit. The carpet body 1 may also be provided with a power supply, which is electrically connected to the power management unit and provides operating power VCC. The pressure detection unit 2 includes at least one woven fabric resistive pressure sensor 20, which is used to detect externally applied pressure. The input terminal of the signal conversion unit 3 is electrically connected to the pressure detection unit 2, and the output terminal of the signal conversion unit 3 is electrically connected to the enable terminal of the power management unit. The power management unit is electrically connected to the first wireless communication unit. Specifically, the output terminal of the power management unit may be electrically connected to the power supply terminal of the first wireless communication unit.

[0026] like Figure 1 As shown, the working principle of this utility model is as follows: When external pressure is applied to the pressure detection unit 2, the output impedance of the braided resistive pressure sensor 20 at the pressure application location changes. After detecting this change, the signal conversion unit 3 converts the impedance change into a corresponding voltage signal. Specifically, it outputs an enable signal (voltage signal) corresponding to the operation to the power management unit to control the operation of the power management unit. After the power circuit unit operates, it outputs the operating voltage to the first wireless communication unit. The first wireless communication unit is powered on and transmits a wireless signal to the external electronic device 4 connected to it wirelessly. After receiving the wireless signal, the external electronic device 4, such as a lamp, can perform actions such as turning it on or off to achieve wireless control of the electronic device 4.

[0027] It is evident that the smart carpet of this invention provides convenience for users; at the same time, due to the characteristics of the woven fabric resistive pressure sensor 20, the touch area is large, further enhancing user convenience; and because the power management unit, the first wireless communication unit, etc., do not operate when no external force is applied to the woven fabric resistive pressure sensor 20, energy consumption is reduced.

[0028] In this invention, the power management unit may include, but is not limited to, a DC-DC circuit, i.e., a boost circuit or a buck circuit, used to convert the power supply VCC into the operating voltage of the first wireless communication unit.

[0029] In this utility model, the first wireless communication unit can be, but is not limited to, a Bluetooth communication unit, or a WIFI or infrared communication unit. The Bluetooth communication unit integrates a microprocessor (MCU). When the first wireless communication unit does not integrate an MCU, a control unit can be set separately. The control unit can include, but is not limited to, an STM32 series microcontroller.

[0030] like Figure 2 As shown, in some embodiments of this utility model, the pressure detection unit 2 includes at least two braided fabric resistive pressure sensors 20, and all braided fabric resistive pressure sensors 20 are connected in parallel. See [link to relevant documentation]. Figure 1 In a preferred embodiment, all the woven resistive pressure sensors 20 are evenly distributed on the carpet body 1.

[0031] This invention relates to a smart carpet in which a woven resistive pressure sensor 20 can be installed in a specific area of ​​the carpet body 1, which can be an area close to the bed. With this arrangement, the user can directly step onto the pressure detection unit 2 after getting out of bed, further enhancing user convenience.

[0032] It should be noted that each braided resistive pressure sensor 20 includes two or more pressure-sensing yarns, which are intertwined through winding or other means; one yarn serves as the positive electrode, and the other as the negative electrode. The length and fineness of the braided resistive pressure sensor 20 are not limited, nor is the winding density of the two or more yarns limited; the type, fineness, twist, or content of the yarn in the braided resistive pressure sensor 20 is not limited, and includes, but is not limited to, various yarns with pressure-sensing functions such as carbon nanotube fiber yarn; see [link to relevant documentation]. Figure 3 The pressure-sensing yarn has a pressure-sensing function. When pressed, each pressure-sensing yarn undergoes physical deformation under the action of external force. At the same time, the resistance between the two pressure-sensing yarns changes from the megaohm level to several hundred ohms. The greater the pressure, the smaller the impedance. This is due to the change in impedance caused by the contact between the two yarns of the woven fabric.

[0033] Due to the characteristics of its woven fabric, the braided resistive pressure sensor 20 allows for a long distance between individual sensors. Multiple sensors combined can achieve a wide detection range. Furthermore, because its impedance is high when not under pressure, it does not waste electricity. Additionally, using the braided resistive pressure sensor 20 to control the power management unit prevents other modules from activating when there is no pressure, further saving power and reducing energy consumption.

[0034] like Figure 1 As shown, in some embodiments of this utility model, the signal conversion unit 3 includes a comparator 30 and a voltage divider circuit 31, which is used to adjust the magnitude of the reference voltage.

[0035] Specifically, the negative input terminal of comparator 30 is electrically connected to one end of each braided resistive pressure sensor 20, and the other end of each braided resistive pressure sensor 20 is grounded to GND. The positive input terminal of comparator 30 is electrically connected to voltage divider circuit 31. The output terminal of comparator 30 is electrically connected to the enable terminal of power management unit, and the power supply terminal of comparator 30 is connected to power supply VCC. Voltage divider circuit 31 includes a first voltage divider resistor R1 and a second voltage divider resistor R2. One end of the first voltage divider resistor R1 is grounded to GND, and the other end of the first voltage divider resistor R1 is electrically connected to the positive input terminal of comparator 30 and the other end of the second voltage divider resistor R2. The other end of the second voltage divider resistor R2 is connected to reference voltage Vref.

[0036] All braided resistive pressure sensors 20 are connected in parallel. One end of the parallel connection is electrically connected to the power supply VCC via resistor R3, and the other end is also electrically connected to the inverting input of comparator 30. The first voltage divider resistor R1, the second voltage divider resistor R2, and resistor R3 mainly function as voltage dividers to adjust the magnitude of the reference voltage Vref.

[0037] In addition, the signal conversion unit 3 is not limited to the comparator 30 and voltage divider circuit 31 listed above, as long as it can detect the impedance change of the pressure detection unit 2 and output the corresponding voltage signal according to the impedance change.

[0038] According to an embodiment of the second aspect of the present invention, the electronic device 4 includes the smart carpet of the first aspect of the present invention and a second wireless communication unit, wherein the second wireless communication unit is wirelessly connected to the first wireless communication unit. (See also...) Figure 1 .

[0039] The electronic device 4 in this invention can be a lamp, which includes an electrically connected lamp and a lamp driving unit, and the lamp driving unit is electrically connected to a second wireless communication unit.

[0040] The working principle of the electronic device in this utility model is described using a lamp as an example:

[0041] When a user gets up in the middle of the night and needs to use the light, they stand on the carpet next to the bed, specifically on pressure detection unit 2, as shown in [reference needed]. Figure 1When the pressure is applied to the woven fabric resistive pressure sensor 20 at the stepped location, the impedance changes, causing the voltage input to the negative input terminal of comparator 30 to decrease. Compared with the voltage at the positive input terminal of comparator 30, the voltage at the negative input terminal of comparator 30 is lower, causing the output terminal of comparator 30 to output a high-level signal (the corresponding enable signal). This controls the enable terminal of the power management unit to become high, enabling the power management unit to output the working voltage to the first wireless communication unit. After being powered on, the first wireless communication unit starts and communicates wirelessly with the second wireless communication unit on the lamp, that is, it transmits a wireless signal to the lamp to inform the lamp that someone has stood on the carpet to get up at night and the lamp needs to be turned on. After receiving the wireless signal, the second wireless communication unit sends an enable signal to the lamp driver unit, turning on the lamp driver unit and causing it to output a drive signal to the lamp, making the lamp emit light.

[0042] In some embodiments of this invention, the electronic device further includes an anti-accidental start unit, which is electrically connected to the second wireless communication unit. Specifically, the anti-accidental start unit includes a light detection unit or a time detection unit, wherein the time detection unit is used to detect the current time.

[0043] In use, the light detection unit on the lamp does not require the lamp to be turned on when the ambient light is sufficient, such as during the day. Even if the pressure detection unit 2 is placed on the carpet, the second wireless communication unit will not turn on the lamp after receiving the wireless signal, thus preventing accidental activation. The time detection unit on the lamp can detect the current time in real time. When the second wireless communication unit receives the wireless signal but the current time is during daytime, the lamp will still not turn on, thus ensuring the normal use of the lamp and preventing accidental activation.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications or improvements to the same smart carpet made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An intelligent carpet, characterized in that, It includes a carpet body, on which a pressure detection unit, a signal conversion unit, a power management unit, and a first wireless communication unit are provided; The pressure detection unit includes at least one woven fabric resistive pressure sensor; The input terminal of the signal conversion unit is electrically connected to the pressure detection unit, and the output terminal of the signal conversion unit is electrically connected to the enable terminal of the power management unit. The power management unit is electrically connected to the first wireless communication unit; When external pressure is applied to the pressure detection unit, the signal conversion unit outputs an enable signal corresponding to the operation to the power management unit, so that the power management unit supplies power to the first wireless communication unit, and the first wireless communication unit is powered on and transmits wireless signals.

2. The smart carpet of claim 1, wherein, The pressure detection unit includes at least two of the braided fabric resistive pressure sensors, and all of the braided fabric resistive pressure sensors are connected in parallel.

3. The smart carpet of claim 2, wherein, The signal conversion unit includes a comparator. The negative input terminal of the comparator is electrically connected to one end of each of the braided resistive pressure sensors, and the other end of each of the braided resistive pressure sensors is grounded. The positive input terminal of the comparator is connected to a reference voltage, and the output terminal of the comparator is electrically connected to the enable terminal of the power management unit.

4. The smart carpet of claim 3, wherein, The signal conversion unit further includes a voltage divider circuit, which is used to adjust the magnitude of the reference voltage. The voltage divider circuit includes a first voltage divider resistor and a second voltage divider resistor. One end of the first voltage divider resistor is grounded, and the other end of the first voltage divider resistor is electrically connected to the positive input terminal of the comparator and the other end of the second voltage divider resistor, respectively. The other end of the second voltage divider resistor is connected to a reference voltage.

5. The smart carpet of claim 2, wherein, All of the aforementioned woven fabric resistive pressure sensors are evenly distributed on the carpet body.

6. An electronic device, comprising: The invention includes the smart carpet as described in any one of claims 1 to 5 and the second wireless communication unit, wherein the second wireless communication unit is wirelessly connected to the first wireless communication unit.

7. The electronic device of claim 6, wherein, The first wireless communication unit and the second wireless communication unit are connected via Bluetooth.

8. The electronic device of claim 7, wherein, The electronic device includes an electrically connected lamp and a lamp driver unit, the lamp driver unit being electrically connected to the second wireless communication unit.

9. The electronic device of claim 7, wherein, The electronic device further includes an anti-accidental start unit, which is electrically connected to the second wireless communication unit.

10. The electronic device of claim 9, wherein, The anti-accidental start unit includes a light detection unit or a time detection unit, wherein the time detection unit is used to detect the current time.

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