Induction device, folding rack and folding furniture

Abstract

The present application relates to the field of smart home technology, and specifically, to a sensing device, a folding frame and folding furniture. The sensing device is applied to the folding frame, and the folding frame includes a conductor frame made of a conductor material. The sensing device includes a signal generator and a control component, and the signal generator and the control component are respectively connected to the conductor frame. The signal generator is used to generate an initial AC signal and transmit the initial AC signal to the conductor frame. The control component is used to collect the target AC signal output by the conductor frame after the initial AC signal is transmitted to the conductor frame, and generate a sensing result based on the target AC signal to indicate whether there is a biological body in contact with the conductor frame. The sensing device, folding frame and folding furniture provided in the embodiments of the present application can provide a reliable inference basis for the occurrence of potential safety accidents, thereby ensuring the safety performance of the folding furniture.

Description

Technical Field

[0001] The present application relates to the field of smart home technology, and more specifically, to a sensing device, a folding rack, and folding furniture. Background Art

[0002] With the improvement of material standards, folding furniture (such as electric folding recliners, electric folding sofas, etc.) as high-end leisure furniture has become more and more popular both at home and abroad. However, in the use of folding furniture, serious safety accidents are often caused by misoperation. For example, the folding frame included in the folding furniture is easy to pinch organisms (such as users or family pets). Therefore, how to give the folding frame a biological sensing function to improve the safety performance of folding furniture has become a technical problem that needs to be solved in the field of smart home technology. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a sensing device, a folding frame and folding furniture to solve the technical problem in the prior art that the folding frame does not have a biological sensing function and thus cannot ensure the safety performance of the folding furniture.

[0004] In a first aspect, an embodiment of the present application provides a sensing device, which is applied to a folding frame, wherein the folding frame includes a conductor frame made of a conductor material, and the sensing device includes a signal generator and a control component, wherein the signal generator and the control component are respectively connected to the conductor frame;

[0005] The signal generator is used to generate an initial AC signal and transmit the initial AC signal to the conductor frame;

[0006] The control component is used to collect the target AC signal output by the conductor frame after the initial AC signal is transmitted to the conductor frame, and generate a sensing result based on the target AC signal to indicate whether there is a biological body in contact with the conductor frame.

[0007] The sensing device provided in the embodiment of the present application is applied to a folding frame, the folding frame includes a conductor frame made of a conductor material, the sensing device includes a signal generator and a control component, and the signal generator and the control component are respectively connected to the conductor frame. The signal generator is used to generate an initial AC signal and transmit the initial AC signal to the conductor frame. The control component is used to collect the target AC signal output by the conductor frame after the initial AC signal is transmitted to the conductor frame, and generate a sensing result according to the target AC signal to indicate whether there is contact between the organism and the conductor frame. When there is no contact between the organism and the conductor frame, the target AC signal output by the conductor frame is equivalent to the initial AC signal in strength, but when there is contact between the organism and the conductor frame, the parasitic capacitance of the organism itself will bypass the initial AC signal transmitted on the conductor frame, so that the conductor frame outputs a target AC signal weaker than the initial AC signal, and the control component can generate a sensing result according to the target AC signal to indicate whether there is contact between the organism and the conductor frame, providing a reliable inference basis for the occurrence of potential safety accidents, thereby ensuring the safety performance of folding furniture.

[0008] In combination with the first aspect, the embodiment of the present application further provides a first optional implementation of the first aspect, wherein the control component includes a first signal processing circuit and a processor, and the conductor frame is connected to the processor via the first signal processing circuit;

[0009] The first signal processing circuit is used to perform anti-interference processing on the target AC signal, obtain a target signal, and transmit the target signal to the processor;

[0010] The processor is used to determine whether a biological body is in contact with the conductor frame according to the target signal to generate the sensing result.

[0011] In an embodiment of the present application, the control component includes a first signal processing circuit and a processor, and the conductor frame is connected to the processor via the first signal processing circuit. The first signal processing circuit is used to perform anti-interference processing on the target AC signal, obtain the target signal, and transmit the target signal to the processor. The processor is used to determine whether there is a biological body in contact with the conductor frame based on the target signal to generate a sensing result. Since the target signal is obtained after anti-interference processing of the target AC signal, therefore, judging whether there is a biological body in contact with the conductor frame based on the target signal to generate a sensing result is not only less difficult to process, but also can ensure that the sensing result has a higher accuracy.

[0012] In combination with the first optional implementation of the first aspect, the embodiment of the present application further provides a second optional implementation of the first aspect, wherein the first signal processing circuit includes a filter circuit, a first amplifying circuit, and an integrating circuit, and the conductor frame is connected to the processor through the filter circuit, the first amplifying circuit, and the integrating circuit in sequence;

[0013] The filtering circuit is used to filter the target AC signal to obtain a first intermediate signal, and transmit the first intermediate signal to the first amplifying circuit;

[0014] The first amplifier circuit is used for amplifying the first intermediate signal to obtain a second intermediate signal, and transmitting the second intermediate signal to the integration circuit;

[0015] The integration circuit is used to perform integration processing on the second intermediate signal to obtain the target signal, and transmit the target signal to the processor.

[0016] In the embodiment of the present application, the first signal processing circuit includes a filter circuit, a first amplifier circuit and an integration circuit, and the conductor frame is connected to the processor through the filter circuit, the first amplifier circuit and the integration circuit in sequence. The filter circuit is used to filter the target AC signal to obtain a first intermediate signal, and transmit the first intermediate signal to the first amplifier circuit. The first amplifier circuit is used to amplify the first intermediate signal to obtain a second intermediate signal, and transmit the second intermediate signal to the integration circuit. The integration circuit is used to integrate the second intermediate signal to obtain the target signal, and transmit the target signal to the processor. Since the target signal is obtained after filtering, amplifying, and integrating the target AC signal, therefore, judging whether there is a contact between the organism and the conductor frame to generate a sensing result according to the target signal, compared with judging whether there is a contact between the organism and the conductor frame to generate a sensing result according to the target AC signal, not only is the processing difficulty lower, but also the sensing result can be guaranteed to have a higher accuracy.

[0017] In combination with the first aspect, the embodiment of the present application further provides a third optional implementation of the first aspect, wherein the signal generator includes a second signal processing circuit, and the control component is connected to the conductor frame through the second signal processing circuit;

[0018] The control component is also used to generate an analog control signal and transmit the analog control signal to the second signal processing circuit;

[0019] The second signal processing circuit is used for converting the analog control signal to obtain the initial AC signal, and transmitting the initial AC signal to the conductor frame.

[0020] In an embodiment of the present application, the signal generator includes a second signal processing circuit, and the control component is connected to the conductor frame through the second signal processing circuit. The control component is also used to generate an analog control signal and transmit the analog control signal to the second signal processing circuit. The second signal processing circuit is used to convert the analog control signal to obtain an initial AC signal, and transmit the initial AC signal to the conductor frame. Since the initial AC signal is converted by the second signal processing circuit according to the analog control signal generated by the control component, the induction device does not need to be provided with a dedicated AC signal generator, which effectively simplifies the overall circuit structure of the induction device and reduces the device cost of the induction device.

[0021] In combination with the third optional implementation of the first aspect, the embodiment of the present application further provides a fourth optional implementation of the first aspect, wherein the second signal processing circuit includes a second amplifying circuit and a shaping circuit, and the control component is connected to the conductor frame through the second amplifying circuit and the shaping circuit in sequence;

[0022] The second amplifier circuit is used to amplify the analog control signal to obtain an intermediate control signal, and transmit the intermediate control signal to the shaping circuit;

[0023] The shaping circuit is used to perform shaping processing on the intermediate control signal to obtain the initial AC signal, and transmit the initial AC signal to the conductor frame.

[0024] In an embodiment of the present application, the second signal processing circuit includes a second amplifying circuit and a shaping circuit, and the control component is connected to the conductor frame through the second amplifying circuit and the shaping circuit in turn. The second amplifying circuit is used to amplify the analog control signal to obtain an intermediate control signal, and transmit the intermediate control signal to the shaping circuit. The shaping circuit is used to shape the intermediate control signal to obtain an initial AC signal, and transmit the initial AC signal to the conductor frame. Since the initial AC signal is obtained after amplifying and shaping the analog control signal, it has high stability and anti-interference performance, and can ensure that the sensing result generated by the subsequent control component has high accuracy.

[0025] In combination with the first aspect, the embodiment of the present application further provides a fifth optional implementation of the first aspect, wherein the sensing device further includes an alarm, and the alarm is connected to the control component;

[0026] The control component is also used to generate an alarm control instruction when the sensing result indicates that a biological body is in contact with the conductor frame, and send the alarm control instruction to the alarm device;

[0027] The alarm device is used to send out an alarm signal when receiving the alarm control instruction.

[0028] In the embodiment of the present application, the sensing device further includes an alarm, which is connected to the control component. The control component is also used to generate an alarm control instruction when the sensing result indicates that there is contact between the organism and the conductor frame, and send the alarm control instruction to the alarm. The alarm is used to send an alarm signal when receiving the alarm control instruction. In this way, the alarm signal can be used to promptly notify the organism to stay away from the conductor frame to avoid safety accidents.

[0029] In combination with the first aspect, the embodiment of the present application further provides a sixth optional implementation of the first aspect, wherein the sensing device further includes a power supply, and the power supply is connected to the control component;

[0030] The power supply is used to provide working power to the control component.

[0031] In the embodiment of the present application, the sensing device further includes a power supply, which is connected to the control component. The power supply is used to provide working power to the control component. In this way, the sensing device does not need an external power supply device, thereby enhancing the application scope and scalability of the sensing device.

[0032] In a second aspect, an embodiment of the present application further provides a folding frame, comprising a conductor frame, and the sensing device provided in the above-mentioned first aspect, or any optional embodiment of the first aspect, wherein the sensing device is arranged on the conductor frame.

[0033] The folding frame provided in the embodiment of the present application includes a conductor frame and the above-mentioned sensing device. The sensing device is arranged on the conductor frame, and has the same beneficial effects as the above-mentioned sensing device, so it will not be repeated here.

[0034] In combination with the second aspect, the embodiment of the present application further provides a first optional implementation of the second aspect, wherein the folding frame further includes a control system, and the control component is further connected to the control system;

[0035] The control component is also used to generate a folding stop instruction when the sensing result indicates that there is a biological body in contact with the conductor frame, and send the folding stop instruction to the control system;

[0036] The control system is used to control the conductor frame to stop folding according to the folding stop instruction.

[0037] In the embodiment of the present application, the folding frame also includes a control system, and the control component is also connected to the control system. The control component is also used to generate a folding stop instruction when the sensing result indicates that there is contact between the biological body and the conductor frame, and send the folding stop instruction to the control system. The control system is used to control the conductor frame to stop folding according to the folding stop instruction. In this way, when the sensing result indicates that there is contact between the biological body and the conductor frame, that is, when there is a potential safety accident, the control system can promptly control the conductor frame to stop folding, thereby ensuring the safety performance of the folding furniture.

[0038] In a third aspect, an embodiment of the present application further provides a folding furniture, comprising a cushion body, and a folding frame provided in the second aspect or the first optional embodiment of the second aspect;

[0039] The pad body is arranged on the folding frame.

[0040] The folding furniture provided in the embodiment of the present application includes a cushion body and the above-mentioned folding frame. The cushion body is arranged on the folding frame, and it has the same beneficial effects as the above-mentioned folding frame, so it will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 A schematic structural block diagram of a sensing device provided in an embodiment of the present application.

[0043] Figure 2 A schematic structural block diagram of a sensing device provided in an embodiment of the present application.

[0044] Figure 3 Another schematic structural block diagram of the sensing device provided in an embodiment of the present application.

[0045] Figure 4 A circuit schematic diagram of a control component provided in an embodiment of the present application.

[0046] Figure 5 A circuit schematic diagram of a second signal processing circuit provided in an embodiment of the present application.

[0047] Figure 6 Another schematic structural block diagram of the sensing device provided in an embodiment of the present application.

[0048] Figure 7A circuit schematic diagram of an alarm provided in an embodiment of the present application.

[0049] Figure 8 A schematic structural diagram of a folding frame provided in an embodiment of the present application.

[0050] Icons: 10-folding frame; 100-sensing device; 110-signal generator; 111-second signal processing circuit; 1111-second amplifying circuit; R7-seventh resistor; R8-eighth resistor; R9-ninth resistor; Q1-transistor; 1112-shaping circuit; L1-inductor; R10-tenth resistor; C6-sixth capacitor; C7-seventh capacitor; 120-control component; 121-first signal processing circuit; 1211-filter circuit; C1-first capacitor; C2-second capacitor; C3-third capacitor; C4-fourth capacitor; R1-first capacitor Resistance; R2-second resistor; R3-third resistor; U1-first operational amplifier; 1212-first amplifying circuit; R4-fourth resistor; R5-fifth resistor; U2-second operational amplifier; 1213-integrating circuit; C5-fifth capacitor; R6-sixth resistor; 122-processor; 130-alarm; R11-eleventh resistor; D1-light emitting diode; 200-conductor frame; 210-main support frame; 220-telescopic frame; 300-control system; 310-push rod structure; 320-motor; 400-device installation box; 500-base. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0053] See also Figure 1 and Figure 2 The embodiment of the present application provides a sensing device 100, which is applied to a folding frame, and the folding frame includes a conductor frame 200 made of a conductor material. The folding frame is an electric control folding frame, which can be formed by assembling the conductor frame 200 with structural parts such as a base and a control system, and the conductor material can be a first type of conductor material, for example, metal materials such as iron, steel, and alloys.

[0054] In the embodiment of the present application, the sensing device 100 includes a signal generator 110 and a control component 120, and the signal generator 110 and the control component 120 are respectively connected to the conductor frame 200. It should be noted that the signal generator 110 is connected to the conductor frame 200, specifically referring to the output end of the signal generator 110 being connected to the conductor frame 200, and the control component 120 is connected to the conductor frame 200, specifically referring to the input end of the control component 120 being connected to the conductor frame 200, and the specific connection position of the output end of the signal generator 110 and the conductor frame 200, and the specific connection position of the input end of the control component 120 and the conductor frame 200 are not specifically limited in the embodiment of the present application, that is, the output end of the signal generator 110 and the conductor frame 200, and the input end of the control component 120 and the conductor frame 200 can form a signal path. The signal generator 110 is used to generate an initial AC signal and transmit the initial AC signal to the conductor frame 200. The control component 120 is used to collect the target AC signal output by the conductor frame 200 after the initial AC signal is transmitted to the conductor frame 200 , and generate a sensing result based on the target AC signal to indicate whether there is a biological body in contact with the conductor frame 200 .

[0055] Through the above configuration, when there is no contact between the biological body and the conductor frame 200, the target AC signal output by the conductor frame 200 is equal in strength to the initial AC signal (eg Figure 1 However, when a biological body is in contact with the conductor frame 200, the parasitic capacitance of the biological body will bypass the initial AC signal transmitted on the conductor frame 200, so that the conductor frame 200 outputs a target AC signal weaker than the initial AC signal. The control component 120 can then adjust the target AC signal according to the strength of the target AC signal (such as Figure 2 As shown in FIG. 2 ), a sensing result is generated to indicate whether a biological body is in contact with the conductor frame 200. For example, when the intensity of the target AC signal is less than a preset intensity threshold, a sensing result is generated to indicate whether a biological body is in contact with the conductor frame 200. In this way, a reliable inference basis can be provided for the occurrence of potential safety accidents, thereby ensuring the safety performance of the folding furniture.

[0056] See also Figure 3 In the embodiment of the present application, the control component 120 includes a first signal processing circuit 121 and a processor 122, and the conductor frame 200 is connected to the processor 122 through the first signal processing circuit 121. The first signal processing circuit 121 is used to perform anti-interference processing on the target AC signal, obtain the target signal, and transmit the target signal to the processor 122. The processor 122 is used to determine whether there is a biological body in contact with the conductor frame 200 according to the target signal to generate a sensing result.

[0057] Please combine Figure 4In actual implementation, the first signal processing circuit 121 may include a filter circuit 1211, a first amplifier circuit 1212, and an integration circuit 1213. The conductor frame 200 is connected to the processor 122 through the filter circuit 1211, the first amplifier circuit 1212, and the integration circuit 1213 in sequence. The filter circuit 1211 is used to filter the target AC signal to obtain a first intermediate signal, and transmit the first intermediate signal to the first amplifier circuit 1212. The first amplifier circuit 1212 is used to amplify the first intermediate signal to obtain a second intermediate signal, and transmit the second intermediate signal to the integration circuit 1213. The integration circuit 1213 is used to integrate the second intermediate signal to obtain a target signal, and transmit the target signal to the processor 122.

[0058] Wherein, the filter circuit 1211 may include a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first resistor R1, a second resistor R2, a third resistor R3 and a first operational amplifier U1. One end of the first capacitor C1 is connected to the conductor frame 200 as the input end of the filter circuit 1211, and the other end is connected in series with the first resistor R1 and the second capacitor C2 in sequence, and the end of the second capacitor C2 away from the first resistor R1 is connected to the reverse input end of the first operational amplifier U1, and one end of the third capacitor C3 is connected to the output end of the first operational amplifier U1, and the other end is used as the output end of the filter circuit 1211. One end of the second resistor R2 is connected between the first resistor R1 and the second capacitor C2, and the other end is grounded. One end of the third resistor R3 is connected between the second capacitor C2 and the reverse input end of the first operational amplifier U1, and the other end is connected between the output end of the first operational amplifier U1 and the third capacitor C3. One end of the fourth capacitor C4 is connected between the first resistor R1 and the second capacitor C2, and the other end is connected between the output end of the first operational amplifier U1 and the third capacitor C3. In addition, in the embodiment of the present application, the capacitance of the first capacitor C1, the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 can all be 100NF, the resistance of the first resistor R1 can be 158KΩ, the resistance of the second resistor R2 can be 806Ω, the resistance of the third resistor R3 can be 316KΩ, and the first operational amplifier U1 can be an OPAx626 series operational amplifier, for example, OPA2626.

[0059] The first amplifier circuit 1212 may include a fourth resistor R4, a fifth resistor R5, and a second operational amplifier U2. One end of the fourth resistor R4 is connected to the output end of the filter circuit 1211 as the input end of the first amplifier circuit 1212, and the other end is connected to the reverse input end of the second operational amplifier U2. One end of the fifth resistor R5 is connected between the fourth resistor R4 and the reverse input end of the second operational amplifier U2, and the other end is connected to the reverse input end of the second operational amplifier U2, and they serve together as the output end of the first amplifier circuit 1212. In addition, in the embodiment of the present application, the resistance value of the fourth resistor R4 may be 10KΩ, the resistance value of the fifth resistor R5 may be 1KΩ, and the second operational amplifier U2 may be an OPAx626 series operational amplifier, for example, OPA2626.

[0060] The integration circuit 1213 may include a fifth capacitor C5 and a sixth resistor R6. One end of the fifth capacitor C5 is connected to the output end of the first amplifier circuit 1212, and the other end is grounded. One end of the sixth resistor R6 is connected to the output end of the first amplifier circuit 1212, and the other end is grounded. It can be understood that one end of the fifth capacitor C5 connected to the output end of the first amplifier circuit 1212 and one end of the sixth resistor R6 connected to the output end of the first amplifier circuit 1212 are used together as the output end of the integration circuit 1213, that is, the output end of the first signal processing circuit 121. In addition, in the embodiment of the present application, the capacitance of the fifth capacitor C5 can be 100NF, and the resistance of the sixth resistor R6 can be 1MΩ.

[0061] In the embodiment of the present application, the processor 122 may be an integrated circuit chip with signal processing capability, and the processor 122 may also be a general-purpose processor, for example, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a discrete gate or transistor logic device, a discrete hardware component, and in addition, the general-purpose processor may be a microprocessor or any conventional processor, for example, a microprocessor STM32F103RBT6. When the processor 122 is a microprocessor STM32F103RBT6, the output end of the first signal processing circuit 121 may be connected to the twentieth pin of the processor 122.

[0062] After the above settings, the target signal is obtained after filtering, amplifying, and integrating the target AC signal. Therefore, judging whether there is a biological body in contact with the conductor frame 200 based on the target signal to generate a sensing result is not only less difficult to process, but also can ensure that the sensing result has a higher accuracy than judging whether there is a biological body in contact with the conductor frame 200 based on the target AC signal to generate a sensing result.

[0063] Please combine Figure 5 In the embodiment of the present application, the signal generator 110 includes a second signal processing circuit 111, and the control component 120 is connected to the conductor frame 200 through the second signal processing circuit 111. The control component 120 is also used to generate an analog control signal and transmit the analog control signal to the second signal processing circuit 111. The second signal processing circuit 111 is used to convert the analog control signal to obtain an initial AC signal, and transmit the initial AC signal to the conductor frame 200. It can be understood that in the embodiment of the present application, when the control component 120 includes a first signal processing circuit 121 and a processor 122, the second signal processing circuit 111 is substantially connected to the processor 122. For example, when the processor 122 is a microprocessor STM32F103RBT6, the input end of the second signal circuit can be connected to the fourteenth pin of the processor 122, and the processor 122 is also used to generate a high-frequency square wave signal as an analog control signal, and transmit it to the second signal circuit through the fourteenth pin.

[0064] After the above configuration, the initial AC signal is converted by the second signal processing circuit 111 according to the analog control signal generated by the control component 120. Therefore, the sensing device 100 does not need to be provided with a dedicated AC signal generator 110, which effectively simplifies the overall circuit structure of the sensing device 100 and reduces the device cost of the sensing device 100.

[0065] In addition, in actual implementation, the second signal processing circuit 111 may include a second amplifying circuit 1111 and a shaping circuit 1112, and the control component 120 is connected to the conductor frame 200 via the second amplifying circuit 1111 and the shaping circuit 1112 in sequence. The second amplifying circuit 1111 is used to amplify the analog control signal to obtain an intermediate control signal, and transmit the intermediate control signal to the shaping circuit 1112. The shaping circuit 1112 is used to shape the intermediate control signal to obtain an initial AC signal, and transmit the initial AC signal to the conductor frame 200.

[0066] Among them, the second amplifier circuit 1111 may include a seventh resistor R7, an eighth resistor R8, a ninth resistor R9 and a transistor Q1. One end of the seventh resistor R7 is used as the input end of the second amplifier circuit 1111, that is, the input end of the second signal circuit is connected to the fourteenth pin of the processor 122, and the other end is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, and the collector is connected to the power supply end through the eighth resistor R8 and the ninth resistor R9 connected in series in sequence. In addition, in the embodiment of the present application, the resistance value of the seventh resistor R7 can be 10KΩ, the resistance value of the eighth resistor R8 can be 1KΩ, and the resistance value of the ninth resistor R9 can be 1KΩ.

[0067] The shaping circuit 1112 may be a π-shaped filter for converting the intermediate control signal into a sine wave signal, that is, the above-mentioned initial AC signal. In the embodiment of the present application, the shaping circuit 1112 may include an inductor L1, a tenth resistor R10, a sixth capacitor C6, and a seventh capacitor C7. The inductor L1 includes a first end and a second end, the first end is used as the input end of the shaping circuit 1112, connected between the eighth resistor R8 and the ninth resistor R9, and the second end is used as the output end of the shaping circuit 1112. One end of the tenth resistor R10 is connected to the first end of the inductor L1, and the other end is connected to the second end of the inductor L1. One end of the sixth capacitor C6 is connected to the first end of the inductor L1, and the other end is grounded. One end of the seventh capacitor C7 is connected to the second end of the inductor L1, and the other end is grounded. In addition, in the embodiment of the present application, the inductance L1 of the inductor L1 can be 47NH, the resistance of the tenth resistor R10 can be 1MΩ, the capacitance of the sixth capacitor C6 can be 100PF, and the capacitance of the seventh capacitor C7 can be 100PF.

[0068] After the above settings, the initial AC signal is obtained by amplifying and shaping the analog control signal. Therefore, it has high stability and anti-interference performance, and can ensure that the sensing result generated by the subsequent control component 120 has high accuracy.

[0069] See also Figure 6 In the embodiment of the present application, the sensing device 100 may further include an alarm 130, and the alarm 130 is connected to the control component 120. The control component 120 is also used to generate an alarm control instruction when the sensing result indicates that there is contact between the biological body and the conductor frame 200, and send the alarm control instruction to the alarm 130. The alarm 130 is used to send an alarm signal when receiving the alarm control instruction. It can be understood that in the embodiment of the present application, when the control component 120 includes the first signal processing circuit 121 and the processor 122, the alarm 130 is substantially connected to the processor 122. For example, when the processor 122 is a microprocessor STM32F103RBT6, the input end of the alarm 130 can be connected to the fifty-seventh pin of the processor 122.

[0070] In actual implementation, the alarm 130 may be a light alarm, a sound alarm, or a sound and light alarm. Figure 7Exemplarily, when the alarm 130 is a light alarm, it may include an eleventh resistor R11 and a light emitting diode D1. One end of the eleventh resistor R11 is connected to the fifty-seventh pin of the processor 122, and the other end is connected to the cathode of the light emitting diode D1, while the anode of the light emitting diode D1 is connected to the power supply terminal. When the sensing result indicates that there is a contact between the biological body and the conductor frame 200, the processor 122 generates an alarm control instruction to lower the fifty-seventh pin to light up the light emitting diode D1 as an alarm signal. In this way, the alarm signal can be sent to promptly notify the biological body to stay away from the conductor frame 200 to avoid safety accidents.

[0071] In the embodiment of the present application, the sensing device 100 further includes a power supply (not shown in the figure), which is connected to the control component 120. The power supply is used to provide working power to the control component 120. In this way, the sensing device 100 does not need an external power supply device, thereby enhancing the application scope and scalability of the sensing device 100.

[0072] Please combine Figure 8 The embodiment of the present application further provides a folding frame 10 , including a conductor frame 200 and the above-mentioned sensing device 100 , wherein the sensing device 100 is disposed on the conductor frame 200 .

[0073] In addition, in the embodiment of the present application, the folding frame 10 may further include a control system 300, and the control component 120 is also connected to the control system 300. The control component 120 is also used to generate a folding stop instruction when the sensing result indicates that there is contact between the biological body and the conductor frame 200, and send the folding stop instruction to the control system 300. The control system 300 is used to control the conductor frame 200 to stop folding according to the folding stop instruction.

[0074] Exemplarily, in the embodiment of the present application, the conductor frame 200 may include a main support frame 210 and a telescopic frame 220, and the control system 300 may include a push rod structure 310, a motor 320 and a controller (not shown in the figure). Among them, the main support frame 210 is hinged with the telescopic frame 220, one end of the push rod structure 310 is connected to the telescopic frame 220, and the other end is connected to the motor 320, so that under the control of the motor 320, the push rod structure 310 can be extended or contracted relative to the main support frame 210, thereby changing the angle θ between the main support frame 210 and the telescopic frame 220, and the controller is respectively connected to the control component 120 and the motor 320, and is used to send a control instruction to the motor 320 according to the sensing result to change the working state of the motor 320, so as to switch the state of the motor 320 controlling the telescopic frame 220 to extend relative to the main support frame 210, or to contract relative to the main support frame 210.

[0075] It should be noted that when the control component 120 includes the first signal processing circuit 121 and the processor 122, the controller is substantially connected to the processor 122. However, in order to simplify the overall circuit structure of the folding frame 10 and reduce the device cost of the folding frame 10, in the embodiment of the present application, the controller and the processor 122 may also be the same device, and structurally, they may be arranged in the device installation box 400 included in the folding frame 10. When the controller and the processor 122 are two independent devices, the controller and part of the structure included in the sensing device 100, for example, the signal generator 110, the first signal processing circuit 121 and the processor 122 may also be arranged in the device installation box 400. In addition, in the embodiment of the present application, the folding frame 10 may also include a base 500 for setting the main support frame 210.

[0076] Through the above-mentioned arrangement, when the sensing result indicates that there is contact between a biological body and the conductive frame 200, that is, the biological body may be located between the main support frame 210 and the telescopic frame 220, and there is a potential safety accident, the controller can promptly send a stop folding instruction to the motor 320 to control the motor 320 to stop or reverse to stop folding, so that the angle θ between the main support frame 210 and the telescopic frame 220 remains unchanged or increases, thereby preventing the biological body from being pinched by the folding frame 10, thereby ensuring the safety performance of the folding furniture using the folding frame 10.

[0077] The embodiment of the present application also provides a folding furniture, for example, an electrically controlled folding recliner or an electrically controlled folding sofa, which includes a cushion body and the above-mentioned folding frame 10 , and the cushion body is arranged on the folding frame 10 .

[0078] In summary, the sensing device 100 provided in the embodiment of the present application is applied to a folding frame 10, the folding frame 10 includes a conductor frame 200 made of a conductor material, and the sensing device 100 includes a signal generator 110 and a control component 120, and the signal generator 110 and the control component 120 are respectively connected to the conductor frame 200. The signal generator 110 is used to generate an initial AC signal and transmit the initial AC signal to the conductor frame 200. The control component 120 is used to collect the target AC signal output by the conductor frame 200 after the initial AC signal is transmitted to the conductor frame 200, and generate a sensing result according to the target AC signal to indicate whether there is a biological body in contact with the conductor frame 200. When there is no biological body in contact with the conductor frame 200, the target AC signal output by the conductor frame 200 is equivalent to the initial AC signal in strength. However, when there is a biological body in contact with the conductor frame 200, the parasitic capacitance of the biological body will bypass the initial AC signal transmitted on the conductor frame 200, causing the conductor frame 200 to output a target AC signal weaker than the initial AC signal. The control component 120 can generate a sensing result based on the target AC signal to indicate whether there is a biological body in contact with the conductor frame 200, providing a reliable inference basis for the occurrence of potential safety accidents, thereby ensuring the safety performance of the folding furniture.

[0079] The folding frame 10 and folding furniture provided in the embodiment of the present application have the same beneficial effects as the above-mentioned sensing device 100, so they are not described in detail here.

[0080] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connection" and "setting" should be understood in a broad sense. For example, it can be a mechanical fixed connection, a detachable connection or an integral connection. It can be an electrical connection or a communication connection. The communication connection can be a wired communication connection or a wireless communication connection. In addition, it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0081] In addition, in the description of the present application, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0082] The above description is only a partial embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sensing device, characterized in that: Applied to a folding frame, the folding frame comprises a conductor frame made of a conductor material, the sensing device comprises a signal generator and a control component, the signal generator and the control component are respectively connected to the conductor frame; The signal generator is used to generate an initial AC signal and transmit the initial AC signal to the conductor frame; The control component is used to collect the target AC signal output by the conductor frame after the initial AC signal is transmitted to the conductor frame, and generate a sensing result according to the target AC signal to indicate whether there is a biological body in contact with the conductor frame; The signal generator includes a second signal processing circuit, and the control component is connected to the conductor frame through the second signal processing circuit; the control component is also used to generate an analog control signal and transmit the analog control signal to the second signal processing circuit; the second signal processing circuit is used to convert the analog control signal to obtain the initial AC signal, and transmit the initial AC signal to the conductor frame; The second signal processing circuit includes a second amplifying circuit and a shaping circuit, and the control component is connected to the conductor frame through the second amplifying circuit and the shaping circuit in sequence; the second amplifying circuit is used to amplify the analog control signal to obtain an intermediate control signal, and transmit the intermediate control signal to the shaping circuit; the shaping circuit is used to shape the intermediate control signal to obtain the initial AC signal, and transmit the initial AC signal to the conductor frame; Wherein, the shaping circuit includes a π-shaped filter.

2. The sensing device according to claim 1, characterized in that: The control component includes a first signal processing circuit and a processor, and the conductor frame is connected to the processor via the first signal processing circuit; The first signal processing circuit is used to perform anti-interference processing on the target AC signal, obtain a target signal, and transmit the target signal to the processor; The processor is used to determine whether a biological body is in contact with the conductor frame according to the target signal, so as to generate the sensing result.

3. The sensing device according to claim 2, characterized in that: The first signal processing circuit includes a filter circuit, a first amplifier circuit and an integration circuit, and the conductor frame is connected to the processor through the filter circuit, the first amplifier circuit and the integration circuit in sequence; The filtering circuit is used to filter the target AC signal to obtain a first intermediate signal, and transmit the first intermediate signal to the first amplifying circuit; The first amplifier circuit is used for amplifying the first intermediate signal to obtain a second intermediate signal, and transmitting the second intermediate signal to the integration circuit; The integration circuit is used to perform integration processing on the second intermediate signal to obtain the target signal, and transmit the target signal to the processor.

4. The sensing device according to claim 1, characterized in that: The sensing device also includes an alarm, which is connected to the control component; The control component is also used to generate an alarm control instruction when the sensing result indicates that a biological body is in contact with the conductor frame, and send the alarm control instruction to the alarm device; The alarm device is used to send out an alarm signal when receiving the alarm control instruction.

5. The sensing device according to claim 1, characterized in that: The induction device also includes a power supply, and the power supply is connected to the control component; The power supply is used to provide working power to the control component.

6. A folding stand, characterized in that: The invention comprises a conductor frame and the induction device according to any one of claims 1 to 5, wherein the induction device is arranged on the conductor frame.

7. The folding stand according to claim 6, characterized in that: The folding frame also includes a control system, and the control component is also connected to the control system; The control component is also used to generate a folding stop instruction when the sensing result indicates that there is a biological body in contact with the conductor frame, and send the folding stop instruction to the control system; The control system is used to control the conductor frame to stop folding according to the folding stop instruction.

8. A folding furniture, characterized in that: It comprises a cushion body and the folding frame according to claim 6 or 7; The pad body is arranged on the folding frame.

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