Anti-disassembly detection device and doorbell device

Abstract

The embodiment of the invention discloses an anti-disassembly detection device and a doorbell device, and belongs to the technical field of safety protection. The anti-disassembly detection device is applied to the doorbell device, the doorbell device is provided with a shell, the shell comprises a back plate and a front shell arranged on the back plate, and the front shell and the back plate are encircled to form the shell; the anti-disassembly detection device comprises a braided fabric pressure detection assembly which is arranged on the back plate, and the braided fabric pressure detection assembly is used for detecting the pressure borne by the braided fabric pressure detection assembly and outputting a corresponding pressure detection signal through the output end of the braided fabric pressure detection assembly; the control circuit is electrically connected with the braided fabric pressure detection assembly, and the control circuit is used for determining the assembly state of the front shell and the back plate according to the pressure detection signal; wherein under the condition that the front shell is arranged on the back plate, the front shell extrudes the braided fabric pressure detection assembly. According to the anti-disassembly detection device provided by the embodiment of the invention, the anti-disassembly detection response speed of the doorbell device can be remarkably improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of security protection, and in particular, to an anti-disassembly detection device and a doorbell device. Background Art

[0002] With the improvement of the quality of life, more and more users choose to install smart doorbells. However, most of the smart doorbells on the market currently do not support the anti-disassembly detection function. Such doorbells installed outdoors may be removed, resulting in low security. And for some products that support the anti-disassembly detection function, there are also problems such as large detection signal delay and inability to respond quickly. Summary of the Invention

[0003] The main purpose of the embodiments of the present application is to provide an anti-disassembly detection device and a doorbell device, aiming to solve the technical problem of how to improve the anti-disassembly detection response speed of the doorbell.

[0004] To achieve the above object, the embodiments of the present application provide an anti-disassembly detection device, which is applied to a doorbell device. The doorbell device has a housing, and the housing includes a back plate and a front shell provided on the back plate. The front shell and the back plate enclose to form the housing. The anti-disassembly detection device includes:

[0005] A fabric pressure detection component, which is arranged on the back plate. The fabric pressure detection component is used to detect the pressure it receives and output a corresponding pressure detection signal through its own output end;

[0006] A control circuit, which is electrically connected to the fabric pressure detection component. The control circuit is used to determine the assembly state of the front shell and the back plate according to the pressure detection signal;

[0007] Wherein, when the front shell is arranged on the back plate, the front shell presses the fabric pressure detection component.

[0008] In one embodiment, the fabric pressure detection component includes:

[0009] A first resistor, the first end of which is electrically connected to the power supply terminal;

[0010] A fabric resistive pressure sensor, the first end of which is electrically connected to the second end of the first resistor, and the second end of the fabric resistive pressure sensor is grounded. The fabric resistive pressure sensor is used to adjust its own resistance according to the pressure it receives;

[0011] The woven fabric resistive pressure sensor and the first resistor are connected in series to form a voltage dividing circuit. The first end of the voltage dividing circuit is connected to the power supply terminal, and the second end of the voltage dividing circuit is grounded. The voltage dividing circuit is configured to divide the power supply voltage applied from the power supply terminal according to the resistance ratio between the first resistor and the woven fabric resistive pressure sensor, and then output the pressure detection signal.

[0012] In one embodiment, the woven fabric resistive pressure sensor includes at least two mutually intertwined and wound pressure sensing yarns, and the pressure sensing yarns are conductive fabrics.

[0013] In one embodiment, the resistance value of the woven fabric resistive pressure sensor is inversely proportional to the pressure received by the woven fabric resistive pressure sensor.

[0014] In one embodiment, the control circuit includes:

[0015] A comparator, the first input terminal of the comparator is connected to the pressure detection signal, and the second input terminal of the comparator is connected to a reference voltage; the comparator is configured to compare the voltage of the pressure detection signal and the voltage of the reference voltage, and output a corresponding electrical signal according to the comparison result;

[0016] A controller, the signal receiving end of the controller is electrically connected to the output end of the comparator; the controller is configured to determine the assembly state according to the electrical signal output by the comparator.

[0017] In one embodiment, the first input terminal of the comparator is the positive input terminal, and the second input terminal of the comparator is the negative input terminal;

[0018] The comparator is configured to output a high level when the voltage of the pressure detection signal is greater than the reference voltage; and is further configured to output a low level when the voltage of the pressure detection signal is less than the reference voltage;

[0019] The controller is configured to determine that the assembly state is a normal state when receiving the low level; and is further configured to determine that the assembly state is an abnormal state when receiving the high level.

[0020] In one embodiment, the anti-tampering detection device further includes:

[0021] A filtering circuit, the first end of the filtering circuit is electrically connected to the first input terminal of the comparator, and the second end of the filtering circuit is grounded.

[0022] In one embodiment, the anti-tampering detection device further includes:

[0023] An alarm circuit, which is electrically connected to the control circuit and is used to output an alarm signal when the assembly state is abnormal.

[0024] In addition, to achieve the above object, an embodiment of the present application further provides a doorbell device, which has a housing. The housing includes a back plate and a front shell disposed on the back plate. The front shell and the back plate enclose to form the housing. The doorbell device includes the anti-disassembly detection device as described above, and the anti-disassembly detection device is disposed inside the housing.

[0025] In one embodiment, the control circuit is disposed on the back plate;

[0026] The fabric resistance type pressure sensor in the fabric pressure detection component is disposed around the circumference of the back plate.

[0027] An anti-disassembly detection device and a doorbell device are proposed in an embodiment of the present application. The fabric pressure detection component disposed on the back plate of the doorbell device is used to detect the pressure it receives and output a corresponding pressure detection signal through its own output end. The control circuit is used to determine the assembly state of the front shell and the back plate according to the pressure detection signal. With such a setting, since the fabric pressure detection component uses a fabric material, its mechanical hysteresis is small, and it can timely feedback the change of the pressure it receives through the pressure detection signal, which is convenient for the user to timely know the assembly state of the front shell and the back plate of the doorbell device. In practical applications, compared with the products in the related art that do not support the anti-disassembly detection function or cannot respond quickly, the fabric pressure detection component involved in the embodiment of the present application can timely detect the action of disassembling the doorbell without affecting the normal operation of the doorbell device, and feedback through the control circuit, significantly improving the anti-disassembly detection response speed and use safety of the doorbell. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of an anti-disassembly detection device provided by an embodiment of the present application and its relative to the front shell and the back plate;

[0029] Figure 2 It is a schematic structural diagram of a fabric pressure detection component involved in an anti-disassembly detection device provided by an embodiment of the present application;

[0030] Figure 3 It is a schematic structural diagram of a fabric resistance type pressure sensor involved in an anti-disassembly detection device provided by an embodiment of the present application;

[0031] Figure 4 It is a schematic diagram of the change state of the fabric resistance type pressure sensor involved in an anti-disassembly detection device provided by an embodiment of the present application relative to the doorbell front shell and the doorbell back plate;

[0032] Figure 5 Schematic diagram of the change state of the woven fabric resistance type pressure sensor involved in an anti-tampering detection device provided by an embodiment of the present application;

[0033] Figure 6 Schematic diagram of the structure of the control circuit involved in an anti-tampering detection device provided by an embodiment of the present application;

[0034] Figure 7 Schematic diagram of the structure of the comparator involved in an anti-tampering detection device provided by an embodiment of the present application;

[0035] Figure 8 Schematic diagram of the structure of another anti-tampering detection device provided by an embodiment of the present application;

[0036] Figure 9 Schematic diagram of the structure of yet another anti-tampering detection device provided by an embodiment of the present application;

[0037] Figure 10 Schematic diagram of the backplane layout structure of a doorbell device provided by an embodiment of the present application.

[0038] Explanation of the reference numerals in the drawings:

[0039] 10. Woven fabric pressure detection component; 20. Control circuit; R1. First resistor; 11. Woven fabric resistance type pressure sensor; 21. Comparator; 22. Controller; 30. Filter circuit; 40. Alarm circuit.

[0040] The realization of the objectives, functional features and advantages of the embodiments of the present application will be further described with reference to the accompanying drawings in combination with the embodiments. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without making creative efforts shall fall within the scope of protection of the embodiments of the present application.

[0042] With the improvement of the quality of life, more and more users choose to install smart doorbells. However, most of the smart doorbells on the market currently do not support the anti-tampering detection function. Such doorbells may be removed when installed outdoors, and the security is not high. And for some products that support the anti-tampering detection function, there are also problems such as large detection signal delay and inability to respond quickly.

[0043] Based on this, the embodiments of the present application provide an anti-tampering detection device and a doorbell device, aiming to solve the technical problem of how to improve the anti-tampering alarm response speed of the doorbell.

[0044] The anti-disassembly detection device provided by the embodiments of the present application will be specifically described through the following embodiments. First, the anti-disassembly detection device in the embodiments of the present application will be described.

[0045] The embodiments of the present application provide an anti-disassembly detection device. Refer to Figure 1 , Figure 1 which is a schematic structural diagram of an anti-disassembly detection device provided by the embodiments of the present application. The anti-disassembly detection device is applied to a doorbell device. The doorbell device has a housing, and the housing includes a back plate and a front shell provided on the back plate. The front shell and the back plate enclose to form the housing. The anti-disassembly detection device includes:

[0046] A woven fabric pressure detection component 10 is provided on the back plate. The woven fabric pressure detection component 10 is used to detect the pressure it receives and output a corresponding pressure detection signal through its own output terminal.

[0047] A control circuit 20 is electrically connected to the woven fabric pressure detection component 10. The control circuit 20 is used to determine the assembly state of the front shell and the back plate according to the pressure detection signal.

[0048] Among them, when the front shell is provided on the back plate, the front shell presses the woven fabric pressure detection component 10.

[0049] In this embodiment, the working principle of the woven fabric pressure detection component 10 is realized by utilizing the sensing characteristics of the deformation material it has. When an external pressure is applied to the woven fabric pressure detection component 10, the size and shape of the deformation material will change, thereby generating different physical parameters such as resistance, capacitance, and inductance. These physical parameters can be measured and converted by the control circuit 20 to obtain information about the external pressure.

[0050] As an example, the woven fabric pressure detection component 10 may include a resistive pressure sensor. When the resistive pressure sensor undergoes physical deformation under pressure, its resistance value also changes accordingly. For example, the resistive pressure sensor is a woven fabric composed of multiple yarns with pressure sensing functions, such as carbon nanotube fiber yarns. Multiple carbon nanotube fiber yarns are connected to a voltage. When the woven fabric pressure detection component 10 is pressed by the front shell, the multiple carbon nanotube fiber yarns at the pressed part undergo physical deformation, and their resistance values become smaller. When the control circuit 20 detects that the voltage (pressure detection signal) of the woven fabric pressure detection component 10 becomes smaller, it can determine that the front shell is assembled on the back plate. On the contrary, when the woven fabric pressure detection component 10 is not pressed by the front shell, its resistance value becomes larger. When the control circuit 20 detects that the voltage (pressure detection signal) of the woven fabric pressure detection component 10 becomes larger, it can determine that the front shell has been disassembled from the back plate or has been separated from the back plate.

[0051] As an example, the fabric pressure detection component 10 can also be implemented using a capacitive pressure sensor, such as a thinner capacitive pressure sensor like a graphene-based flexible capacitive pressure sensor or a thin-film capacitive pressure sensor. Multiple capacitive pressure sensors can be combined with the fabric through a specific process (such as sewing, pasting, thermal bonding, etc.). When the fabric pressure detection component 10 is squeezed, the capacitive pressure sensor at the squeezed location outputs a pressure detection electrical signal to the control circuit 20. For example, the graphene of the graphene-based flexible capacitive pressure sensor deforms, resulting in a change in its electrical conductivity, causing the voltage of the pressure detection signal to decrease. Or, the thin film (movable electrode) of the thin-film capacitive pressure sensor deforms, changing the distance between it and the fixed electrode. The change in distance leads to a change in capacitance value, and the voltage magnitude of the pressure detection signal also changes accordingly. The control circuit 20 can be used to determine the assembly state of the front shell and the back plate when the voltage of the pressure detection signal changes.

[0052] It can be understood that since both the carbon nanotube fiber yarn and the thin-film capacitive pressure sensor are flexible materials, the fabric pressure detection component 10 has the characteristic of fast response speed when using multiple intertwined carbon nanotube fiber yarns or thin-film capacitive pressure sensors. Thus, in practical applications, when the fabric pressure detection component 10 is set in the housing of the doorbell device, it can detect the action of disassembling the doorbell in a timely manner without affecting the normal operation of the doorbell device, and feedback through the control circuit 20, significantly improving the anti-disassembly detection response speed and usage safety of the doorbell.

[0053] In this embodiment, the control circuit 20 can be implemented in software or hardware. As an example, the control circuit 20 can directly obtain the pressure detection signal through software, and in combination with a pre-set signal threshold range, quickly determine what assembly state the currently received pressure detection signal corresponds to, such as a normal pressing state, an assembled but not pressed state, an abnormal disassembling state, a disassembled state, etc. As an example, the control circuit 20 can also be implemented by a hardware circuit composed of a comparator and a controller. The pressure detection signal is compared with a preset reference voltage through the comparator, and then the controller determines the assembly state of the front shell and the back plate based on the result output by the comparator.

[0054] This embodiment provides an anti - tamper detection device. The anti - tamper detection device includes a woven fabric pressure detection component 10 and a control circuit 20. The woven fabric pressure detection component 10 disposed on the back plate of the doorbell device is used to detect the pressure it receives and output a corresponding pressure detection signal through its output terminal. The control circuit 20 is used to determine the assembly state of the front shell and the back plate according to the pressure detection signal. With such a setting, since the woven fabric pressure detection component 10 uses a woven fabric material, its mechanical hysteresis is small, and it can timely feedback the change in the pressure it receives through the pressure detection signal, facilitating the user to timely know the assembly state of the front shell and the back plate of the doorbell device. In practical applications, compared with the products in the related art that do not support the anti - tamper detection function or cannot respond quickly, the woven fabric pressure detection component 10 involved in this application embodiment can timely detect the action of disassembling the doorbell without affecting the normal operation of the doorbell device, and feedback through the control circuit 20, significantly improving the anti - tamper detection response speed and the use safety of the doorbell.

[0055] Referring to Figure 2 , in some feasible embodiments, the woven fabric pressure detection component 10 includes:

[0056] A first resistor R1, the first end of the first resistor R1 is electrically connected to the power supply terminal;

[0057] A woven fabric resistive pressure sensor 11, the first end of the woven fabric resistive pressure sensor 11 is electrically connected to the second end of the first resistor R1, the second end of the woven fabric resistive pressure sensor 11 is grounded, and the woven fabric resistive pressure sensor 11 is used to adjust its own resistance according to the pressure it receives;

[0058] The woven fabric resistive pressure sensor 11 and the first resistor R1 are connected in series to form a voltage - dividing circuit. The first end of the voltage - dividing circuit is connected to the power supply terminal, and the second end of the voltage - dividing circuit is grounded. The voltage - dividing circuit is used to divide the power supply voltage connected from the power supply terminal according to the resistance ratio between the first resistor R1 and the woven fabric resistive pressure sensor 11 and then output a pressure detection signal.

[0059] In this embodiment, the first end of the voltage - dividing circuit includes the first end of the first resistor R1, and the second end of the voltage - dividing circuit includes the second end of the woven fabric resistive pressure sensor 11.

[0060] It can be understood that the first resistor R1 also plays an over - current protection role, which can prevent the situation that the woven fabric resistive pressure sensor 11 is damaged due to excessive current.

[0061] In this embodiment, as Figure 3As shown, the knitted fabric resistance type pressure sensor 11 includes at least two mutually intertwined pressure sensing yarns. Among them, the pressure sensing yarn is a conductive fabric, which realizes the conductive function by adding conductive fibers or coatings. The conductive fabric has stable conductive performance, can effectively conduct current, and because it is composed of a fabric substrate and conductive fibers, it also has good mechanical properties. Through the research on the mechanism of resistance change of the conductive fabric under different stress modes, the conductive fabric can realize a highly sensitive pressure sensing function. As an example, the pressure sensing yarn includes but is not limited to various types of yarns with pressure sensing functions such as carbon nanotube fiber yarns.

[0062] As an example, referring to Figure 4 and Figure 5 , as the assembly state of the front shell and the back plate is different, the states of the two pressure sensing yarns will also change accordingly. When the front shell is set on the back plate, the two pressure sensing yarns are in a mutually extruded state and deformed (corresponding to the non-disassembly state in Figure 5 ), so that the resistance values of the two pressure sensing yarns change, decreasing from the megaohm level to the hundred-ohm level. The greater the pressure on the pressure sensing yarn, the smaller the resistance value. Correspondingly, the voltage of the pressure sensing yarn also decreases. When the control circuit 20 detects a decrease in the voltage of the pressure sensing yarn, it determines that the assembly state of the front shell and the back plate is the non-disassembly state; when the front shell is disassembled from the back plate, the two pressure sensing yarns gradually separate from each other from the mutually extruded state (corresponding to the state from having a disassembly action until being completely removed in Figure 5 ), so that the resistance values of the two pressure sensing yarns change, increasing from the hundred-ohm level to the megaohm level. The smaller the pressure on the pressure sensing yarn, the greater the resistance value. Correspondingly, the voltage of the pressure sensing yarn also increases. When the control circuit 20 detects an increase in the voltage of the pressure sensing yarn, it determines that the assembly state of the front shell and the back plate is the disassembled state, thereby reminding the user that the front shell of the doorbell device is being disassembled or has been disassembled. With such a setting, in practical applications, multiple pressure sensing yarns are intertwined with each other, or multiple pressure sensing yarns are intertwined with multiple ordinary cotton yarns, and can be designed into a pressable component that does not affect the normal use of the doorbell and is arranged in the housing of the doorbell device. Therefore, when the front shell is disassembled from the back plate, the knitted fabric pressure detection component 10 can timely feedback the corresponding detection signal to the control circuit 20, so that the user can timely know the assembly state of the doorbell device and ensure the rapid response of the anti-disassembly detection function.

[0063] It should be noted that the pressure sensing yarn has memory, and it will automatically return to its original state after the pressure on it disappears.

[0064] Referring to Figure 6 , in some feasible embodiments, the control circuit 20 includes:

[0065] Comparator 21, the first input terminal of comparator 21 is connected to the pressure detection signal, and the second input terminal of comparator 21 is connected to the reference voltage; comparator 21 is used to compare the voltage of the pressure detection signal with the voltage of the reference voltage, and output a corresponding electrical signal according to the comparison result;

[0066] Controller 22, the signal receiving end of controller 22 is electrically connected to the output end of comparator 21; controller 22 is used to determine the assembly state according to the electrical signal output by comparator 21.

[0067] In this embodiment, controller 22 can be implemented by using any type of microprocessor, such as MCU (Microcontroller Unit), DSP (Digital Signal Process), FPGA (Field Programmable Gate Array), SOC (System On Chip), etc.

[0068] In this embodiment, the control circuit 20 uses at least one comparator 21. Comparator 21 is used to output a high / low level signal to controller 22 when the voltage of the pressure detection signal is less than / greater than the reference voltage. Controller 22 is used to determine the assembly state of the front shell and the back plate when receiving the high / low level signal.

[0069] As an example, referring to Figure 7 the shown circuit, the first input terminal of comparator 21 is the positive input terminal, and the second input terminal of comparator 21 is the negative input terminal; comparator 21 is used to output a high level when the voltage of the pressure detection signal is greater than the reference voltage; and is also used to output a low level when the voltage of the pressure detection signal is less than the reference voltage; controller 22 is used to determine that the assembly state is the normal state when receiving the low level; and is also used to determine that the assembly state is the abnormal state when receiving the high level. Among them, the reference voltage can be a suitable voltage value set based on the change range of the pressure detection signal, and can be provided to comparator 21 by an internal power supply or an external power supply.

[0070] As can be seen from the above embodiments, when the front shell of the doorbell is not disassembled, the front shell of the doorbell presses the fabric resistive pressure sensor 11, and the fabric resistive pressure sensor 11 receives the pressure. Since the pressure received by the fabric resistive pressure sensor 11 is inversely proportional to the impedance, the greater the pressure, the lower the impedance. At this time, the pressure received by the fabric resistive pressure sensor 11 is greater than the pressure threshold A, and the impedance of the fabric resistive pressure sensor 11 is low. The voltage of the positive input terminal Vin of the comparator 21 is low and less than the reference voltage Vref connected to the negative input terminal of the comparator 21. The comparator 21 outputs a low level to the controller 22, determining that there is no disassembly action, and the assembly state is the normal state; when the front shell of the doorbell is disassembled, the pressure value received by the fabric resistive pressure sensor 11 decreases, causing the impedance of the fabric resistive pressure sensor 11 to increase. When the pressure received by the fabric resistive pressure sensor 11 is less than the pressure threshold A, the impedance of the fabric resistive pressure sensor 11 increases, causing the voltage of the positive input terminal Vin of the comparator 21 to increase. When it is greater than the reference voltage Vref connected to the negative input terminal of the comparator 21, the comparator 21 outputs a high level to the controller 22. The controller 22 receives the high level and determines that there is a disassembly action, and the assembly state is the abnormal state.

[0071] It can be understood that if the polarities of the positive and negative terminals of the first input terminal and the second input terminal of the comparator 21 are swapped, the logic of its output signal will also be adjusted accordingly, and the logic of the controller 22 for judging the assembly state based on the electrical signal from the comparator 21 will also be adjusted accordingly.

[0072] In this embodiment, the normal state may include, for example Figure 4 the non-disassembled state shown and the pressed state when the doorbell is pressed. The abnormal state may include, for example Figure 4 the disassembled state shown and the state during disassembly.

[0073] Referring to Figure 8 , in some feasible embodiments, the anti-disassembly detection device may further include:

[0074] A filter circuit 30, the first end of the filter circuit 30 is electrically connected to the first input terminal of the comparator 21, and the second end of the filter circuit 30 is grounded.

[0075] In this embodiment, the filter circuit 30 can be implemented in software or hardware. The filter circuit 30 can filter out the noise in the pressure detection signal, thereby improving the accuracy and stability of the detection result. As an example, the filter circuit 30 may include filter capacitors.

[0076] Referring to Figure 9 , in some feasible embodiments, the anti-disassembly detection device may further include:

[0077] An alarm circuit 40, which is electrically connected to the control circuit 20, is configured to output an alarm signal when the assembly state is abnormal.

[0078] In this embodiment, the alarm circuit 40 can be used as a way to display the result after the control circuit 20 determines the assembly state of the doorbell front shell and the back plate based on the pressure detection signal. It can more intuitively inform the user of the detection result. And when it is detected that the doorbell is being disassembled, an alarm signal is sent through the alarm circuit 40. This can not only alert the user to promptly learn about the event that the doorbell is being disassembled, but also warn the person disassembling the doorbell to stop the disassembly behavior.

[0079] As an example, the alarm signal can be transmitted through dimensions such as hearing and vision. For example, it can be achieved by the buzzer sounding or the indicator light flashing red. This embodiment does not limit this.

[0080] In addition, the embodiment of the present application also provides a doorbell device, which has a housing. The housing includes a back plate and a front shell disposed on the back plate. The front shell and the back plate enclose to form the housing. The doorbell device includes the anti-disassembly detection device provided in the above embodiment.

[0081] As an example, as Figure 10 shown, the control circuit is disposed on the back plate; the fabric resistive pressure sensor in the fabric pressure detection component is disposed around the circumference of the back plate.

[0082] In this embodiment, the control circuit can be implemented in the doorbell PCBA circuit board. The fabric resistive pressure sensor is disposed around the four sides of the back plate, which can enable the disassembly action of the doorbell front shell to be sensed in a timely manner by the fabric resistive pressure sensor no matter from which direction, so that the control circuit can quickly inform the user of this event, realizing the anti-disassembly detection function with fast response.

[0083] Those skilled in the art can understand that Figure 10 the structure shown in

[0084] does not constitute a limitation on the doorbell device. It may include more or fewer components than shown, or combine some components, or have different component arrangements.

[0085] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0086] In addition, in the embodiments of this application, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the embodiments of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously.

[0087] In the embodiments of this application, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; 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 internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0088] It should also be understood that referring to "one embodiment" or "some embodiments" etc. described in the specification of the embodiments of this application means that a specific feature, structure, or characteristic described in connection with this embodiment is included in one or more embodiments of the embodiments of this application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments" etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in another way. The terms "include", "comprise", "have" and their variants all mean "include but not limited to", unless otherwise specifically emphasized in another way.

[0089] It should be noted that the technical solutions of the various embodiments of this application can be combined with each other, but it must be based on the ability of those skilled in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the embodiments of this application.

[0090] The above are only optional embodiments of the embodiments of the present application, and do not limit the patent scope of the embodiments of the present application. Any equivalent structural or equivalent process transformation made by using the specification and drawings of the embodiments of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the embodiments of the present application.

Claims

1. An anti-disassembly detection device, characterized in that, Applied to a doorbell device, the doorbell device having a housing, the housing including a back plate and a front shell disposed on the back plate, the front shell and the back plate enclosing to form the housing; The anti-tampering detection device includes: A fabric pressure detection component, the fabric pressure detection component is disposed on the back plate, and the fabric pressure detection component is used to detect the pressure it receives and output a corresponding pressure detection signal through its own output end; A control circuit, the control circuit is electrically connected to the fabric pressure detection component, and the control circuit is used to determine the assembly state of the front shell and the back plate according to the pressure detection signal; Wherein, when the front shell is disposed on the back plate, the front shell presses the fabric pressure detection component.

2. The anti-disassembly detection device according to claim 1, wherein The fabric pressure detection component includes: A first resistor, a first end of the first resistor is electrically connected to a power supply terminal; A fabric resistive pressure sensor, a first end of the fabric resistive pressure sensor is electrically connected to a second end of the first resistor, a second end of the fabric resistive pressure sensor is grounded, and the fabric resistive pressure sensor is used to adjust its own resistance according to the pressure it receives; The fabric resistive pressure sensor and the first resistor are connected in series to form a voltage dividing circuit, a first end of the voltage dividing circuit is connected to the power supply terminal, a second end of the voltage dividing circuit is grounded, and the voltage dividing circuit is used to divide the power supply voltage accessed from the power supply terminal according to the resistance ratio between the first resistor and the fabric resistive pressure sensor and then output the pressure detection signal.

3. The anti-disassembly detection device according to claim 2, characterized in that, The fabric resistive pressure sensor includes at least two mutually intertwined pressure sensing yarns, and the pressure sensing yarns are conductive fabrics.

4. The anti-disassembly detection device according to claim 2, wherein The resistance value of the fabric resistive pressure sensor is inversely proportional to the pressure received by the fabric resistive pressure sensor.

5. The anti-disassembly detection device according to claim 1, characterized in that The control circuit includes: A comparator, a first input terminal of the comparator accesses the pressure detection signal, and a second input terminal of the comparator accesses a reference voltage; the comparator is used to compare the voltage of the pressure detection signal and the voltage of the reference voltage and output a corresponding electrical signal according to the comparison result; A controller, a signal receiving terminal of the controller is electrically connected to an output terminal of the comparator; the controller is used to determine the assembly state according to the electrical signal output by the comparator.

6. The anti-tampering detection device according to claim 5, wherein The first input terminal of the comparator is a positive input terminal, and the second input terminal of the comparator is a negative input terminal; The comparator is used to output a high level when the voltage of the pressure detection signal is greater than the reference voltage; and is also used to output a low level when the voltage of the pressure detection signal is less than the reference voltage; The controller is used to determine that the assembly state is a normal state when receiving the low level; and is also used to determine that the assembly state is an abnormal state when receiving the high level.

7. The anti-disassembly detection device according to claim 5, characterized in that, The anti-tampering detection device further includes: A filtering circuit, a first end of the filtering circuit is electrically connected to the first input terminal of the comparator, and a second end of the filtering circuit is grounded.

8. The anti-tampering detection device according to any one of claims 1 to 7, characterized in that, The anti-tampering detection device further includes: An alarm circuit, the alarm circuit is electrically connected to the control circuit, and the alarm circuit is used to output an alarm signal when the assembly state is an abnormal state.

9. A doorbell device, the doorbell device having a housing, the housing including a back plate and a front shell disposed on the back plate, the front shell and the back plate enclosing to form the housing, characterized in that, The doorbell device includes the anti-tampering detection device according to any one of claims 1 to 8, and the anti-tampering detection device is arranged in the housing.

10. The doorbell device according to claim 9, characterized in that, The control circuit is arranged on the back plate; The fabric resistance type pressure sensor in the fabric pressure detection assembly is arranged around the circumference of the back plate.

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