Testing device for doorbell touch module

Abstract

The utility model discloses a doorbell touch module testing device, the device comprises an LED lamp group, a switch tube detection circuit and a touch module, the signal input end of the touch module is connected with the signal output end of the doorbell touch module, the signal output end of the touch module is connected with the base electrode of the switch tube detection circuit, and the base electrode of the switch tube detection circuit is connected with the LED lamp group. The collector electrode of the switch tube detection circuit is connected with the LED lamp group, and the emitter electrode of the switch tube detection circuit is grounded. According to the utility model, the doorbell touch module can be effectively tested without using special test equipment, whether the doorbell touch module can work normally or not can be accurately tested, the production efficiency can be improved, and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to a testing device for a doorbell touch module, belonging to the technical field of testing doorbell touch modules. Background Art

[0002] In existing technologies, touch chips are usually used to implement touch control of doorbells. When a person's finger touches the touch module of the doorbell, the touch chip will sense the touch signal and then convert the touch signal into an on or off signal for the doorbell through a certain circuit design. In addition, in order to ensure the normal use of the doorbell, the touch module of the doorbell needs to be tested to ensure that it can work properly.

[0003] However, the above-mentioned existing technologies still have some problems in practical application. First, existing testing methods are often complex, requiring specialized testing equipment and complicated operating procedures, which not only increases the production cost of doorbells but also reduces production efficiency. Second, existing testing methods can only test a portion of the doorbell's functions and are often unable to accurately determine whether the doorbell's touch module is functioning properly. Therefore, designing a simple and easy-to-implement method that can accurately test whether the doorbell's touch module is functioning properly has become a difficult problem in the existing technology. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a testing device for a doorbell touch module. The device can effectively test the doorbell touch module without using special testing equipment, and can accurately test whether the doorbell touch module can work normally, thereby improving production efficiency and reducing production costs.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A test device for a doorbell touch module includes an LED light group, a switch tube detection circuit, and a touch module. The signal input end of the touch module is connected to the signal output end of the doorbell touch module, the signal output end of the touch module is connected to the base of the switch tube detection circuit, the collector of the switch tube detection circuit is connected to the LED light group, and the emitter of the switch tube detection circuit is grounded.

[0007] Furthermore, the LED lamp group includes multiple groups of LED lamps connected in parallel, and each group of LED lamps includes a light-emitting diode and a resistor connected in series.

[0008] Furthermore, the switch tube detection circuit includes a switch tube, a third resistor and a fourth resistor;

[0009] The signal output end of the touch module is connected to the first electrode of the switch tube, the second electrode of the switch tube is grounded, and the third electrode of the switch tube is connected to the power supply through the LED light group;

[0010] The third resistor is connected between the first electrode of the switch tube and the signal output terminal of the touch module, and the fourth resistor is connected between the first electrode and the second electrode of the switch tube;

[0011] The switch tube is a triode or a MOS tube;

[0012] When the switch tube is a triode, the first electrode, the second electrode and the third electrode of the switch tube correspond to the base, the emitter and the collector respectively;

[0013] When the switch tube is a MOS tube, the first electrode, the second electrode and the third electrode of the switch tube correspond to the gate, the source and the drain respectively.

[0014] Furthermore, the touch module includes a touch chip, a first filtering circuit and a second filtering circuit, and the touch chip includes a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin, wherein the first pin serves as a signal output end of the touch module, the third pin serves as a signal input end of the touch module, and is connected to the signal output end of the doorbell touch module through the first filtering circuit, the second pin, the fourth pin and the sixth pin are grounded, and the fifth pin is connected to the power supply and is connected to the second filtering circuit.

[0015] Furthermore, the first filtering circuit includes a first electrostatic protection component, a fifth resistor and a first capacitor. The first electrostatic protection component is connected in series with the fifth resistor and then in parallel with the first capacitor.

[0016] Furthermore, the third pin of the touch chip is respectively connected to one end of the fifth resistor and one end of the first capacitor, the other end of the fifth resistor is connected to one end of the first electrostatic protection component, the other end of the first electrostatic protection component and the other end of the first capacitor are grounded and connected to the signal output end of the doorbell touch module.

[0017] Furthermore, the second filtering circuit includes a second electrostatic protection component, a second capacitor and a third capacitor, and the second electrostatic protection component, the second capacitor and the third capacitor are connected in parallel.

[0018] Furthermore, the fifth pin of the touch chip is respectively connected to one end of the second electrostatic protection component, one end of the second capacitor, and one end of the third capacitor, and the other end of the second electrostatic protection component, the other end of the second capacitor, and the other end of the third capacitor are grounded.

[0019] Furthermore, the doorbell touch module is composed of five touch sensor devices connected in parallel, each touch sensor device includes a first pin, a second pin and a third pin, wherein the first pin and the third pin are grounded, and the second pin serves as a signal output end of the doorbell touch module.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This utility model adopts a simple circuit design and matching. Through the combination of switch tube and LED light, it can intuitively judge whether the doorbell touch module can work normally. No special testing equipment and complicated operation process are required, which greatly simplifies the test process and improves production efficiency. In addition, the doorbell touch module can be directly tested instead of partial functions, which can more accurately judge whether the performance of the doorbell meets the design requirements and improve the accuracy of the test.

[0022] 2. The testing method of the present invention is simple and easy to implement, and does not require special testing equipment. Therefore, it can reduce the production cost of the doorbell, making it more competitive in the market. Moreover, since the doorbell touch module can be accurately tested, the normal use of the doorbell can be guaranteed, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 This is a structural principle block diagram of a testing device for a doorbell touch module according to an embodiment of the present invention.

[0025] Figure 2 This is a circuit schematic diagram of a testing device for a doorbell touch module according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the LED light group circuit of the test device for the doorbell touch module according to an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the switch tube detection circuit of the test device for the doorbell touch module according to an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of a touch module circuit of a testing device for a doorbell touch module according to an embodiment of the present invention.

[0029] Figure 6This is a schematic diagram of the doorbell touch module according to an embodiment of the present invention.

[0030] Figure 7 This is a test flow chart of the testing device for the doorbell touch module according to an embodiment of the present invention.

[0031] Among them, 1-LED light group, 2-switch tube detection circuit, 3-touch module, 4-doorbell touch module, D1-first diode, D2-second diode, Q1-transistor, R1-first resistor, R2-second resistor, R3-third resistor, R4-fourth resistor, R5-fifth resistor, U1-touch chip, ESD1-first electrostatic protection component, ESD2-second electrostatic protection component, C1-first capacitor, C2-third capacitor, C3-first capacitor, J1-first touch sensor device, J2-second touch sensor device, J3-third touch sensor device, J4-fourth touch sensor device, J5-fifth touch sensor device. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Example:

[0034] like Figure 1 and Figure 2 As shown, this embodiment provides a test device for a doorbell touch module, which includes an LED light group 1, a switch tube detection circuit 2 and a touch module 3. The signal input end (Touch_IN end) of the touch module 3 is connected to the signal output end of the doorbell touch module 4, and the signal output end (Touch Out end) of the touch module 3 is connected to the LED light group 1 through the switch tube detection circuit 2 to control the state of the LED light group 1 through the switch tube detection circuit 2, wherein the signal input end of the touch module 3 is used to input a touch input signal, and the signal output end of the touch module 3 is used to output a touch output signal.

[0035] In one embodiment, Figures 1 to 3As shown, the LED lamp group 1 includes two LED lamps connected in parallel, both of which are white light LEDs, namely a first LED lamp and a second LED lamp. The first LED lamp includes a first diode D1 and a first resistor R1, and the first diode D1 is connected in series with the first resistor R1. The second LED lamp includes a second diode D2 and a second resistor R2, and the second diode D2 is connected in series with the second resistor R2. The provision of two LED lamps can ensure that when one of the LED lamps is damaged, the other LED lamp will not be affected. Normal operation.

[0036] In one embodiment, the anode (positive electrode) of the first diode D1 is connected to one end of the first resistor R1, the anode (positive electrode) of the second diode D2 is connected to one end of the second resistor R2, the cathode (negative electrode) of the first diode D1 and the cathode (negative electrode) of the second diode D2 are connected to the switch tube detection circuit 2, and the other end of the first resistor R1 and the other end of the second resistor R2 are connected to the power supply, which is a 3V3 power supply that can input 3V3 voltage. The LED lamp group 1 is continuously powered by the 3V3 power supply.

[0037] In one embodiment, Figures 1 and 2 、 Figure 4 As shown, the switching tube detection circuit 2 includes a switching tube, a third resistor R3 and a fourth resistor R4, wherein the switching tube is a transistor Q1, and the transistor Q1 adopts an NPN transistor. The signal output end of the touch module 3 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, and the collector of the transistor Q1 is connected to the power supply through the LED lamp group, specifically to the cathode (negative electrode) of the first diode D1 and the cathode (negative electrode) of the second diode D2. The third resistor R3 is connected between the base of the transistor Q1 and the signal output end of the touch module 3, and the fourth resistor R4 is connected between the base and the emitter of the transistor Q1.

[0038] In one embodiment, the switch tube can also be a MOS tube. In this case, the signal output end of the touch module is connected to the gate of the MOS tube, the source of the MOS tube is grounded, and the drain of the MOS tube is connected to the power supply through the LED light group, specifically connected to the cathode (negative electrode) of the first diode D1 and the cathode (negative electrode) of the second diode D2.

[0039] In one embodiment, Figures 1 and 2 、 Figure 5As shown, the touch module 3 includes a touch chip U1, a first filtering circuit and a second filtering circuit. The touch chip U1 includes a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin, wherein the first pin serves as the signal output end of the touch module 3, the third pin serves as the signal input end of the touch module 3, and is connected to the signal output end of the doorbell touch module 4 through the first filtering circuit, the second pin, the fourth pin and the sixth pin are grounded, the fifth pin is connected to the above-mentioned 3V3 power supply and is connected to the second filtering circuit, and the touch chip U1 is continuously powered by the 3V3 power supply.

[0040] In one embodiment, the first filtering circuit is used to filter the touch input signal received by the doorbell touch module 4, which includes a first electrostatic protection component ESD1, a fifth resistor R5 and a first capacitor C3. The first electrostatic protection component ESD2 is connected in series with the fifth resistor R5 and then in parallel with the first capacitor C3.

[0041] In one embodiment, the third pin of the touch chip U1 is respectively connected to one end of the fifth resistor R5 and one end of the first capacitor C3, the other end of the fifth resistor R5 is connected to one end of the first electrostatic protection component ESD1, the other end of the first electrostatic protection component ESD1 and the other end of the first capacitor C3 are grounded and connected to the signal output end of the doorbell touch module 4.

[0042] In one embodiment, the second filtering circuit includes a second electrostatic protection component ESD2, a second capacitor C1, and a third capacitor C2. The second electrostatic protection component ESD1, the second capacitor C1, and the third capacitor C3 are connected in parallel.

[0043] In one embodiment, the fifth pin of the touch chip U1 is respectively connected to one end of the second electrostatic protection component ESD2, one end of the second capacitor C1, and one end of the third capacitor C2, and the other end of the second electrostatic protection component ESD2, the other end of the second capacitor C1, and the other end of the third capacitor C2 are grounded.

[0044] In one embodiment, Figures 1 and 2 、 Figure 6 As shown, the doorbell touch module 4 is installed on the doorbell, which is composed of five touch sensor devices in parallel. The five touch sensor devices are respectively a first touch sensor device J1, a second touch sensor device J2, a third touch sensor device J3, a fourth touch sensor device J4 and a fifth touch sensor device J5. Each touch sensor device includes a first pin, a second pin and a third pin, wherein the first pin and the third pin are grounded, and the second pin serves as the signal output end of the doorbell touch module 4. By pressing the doorbell with a finger, the doorbell touch module 4 receives a touch input signal and then outputs the touch input signal to the touch module 3.

[0045] like Figures 1 to 7 As shown, the testing process of the doorbell touch module of this embodiment is as follows:

[0046] S1, power input voltage, and keep the input voltage unchanged.

[0047] S2. When the signal output terminal of the touch module 3 outputs a first level signal, the switch tube detection circuit 2 is turned off, and the LED light group 1 is turned off.

[0048] In one embodiment, the touch chip U1 operates in asynchronous mode. When the doorbell is pressed by a finger, the doorbell touch module 4 receives the touch input signal and outputs the touch input signal to the touch module 3. The signal output end of the touch module 3 outputs a low-level signal, the switch tube detection circuit 2 is cut off, and the LED light group 1 is turned off.

[0049] S3. When the signal output terminal of the touch module 3 outputs the second level signal, the switch tube detection circuit 2 is turned on, and the LED light group 1 lights up.

[0050] In one embodiment, the touch chip U1 operates in asynchronous mode. When the doorbell is not pressed by a finger, the doorbell touch module 4 does not receive a touch input signal, the signal output end of the touch module 3 outputs a high-level signal, the switch tube detection circuit 2 is turned on, and the LED light group 1 lights up.

[0051] In one embodiment, the touch chip U1 can also work in a synchronous mode. The specific test process is as follows:

[0052] When the doorbell is pressed by a finger, the doorbell touch module 4 receives the touch input signal and outputs the touch input signal to the touch module 3. The signal output end of the touch module 3 outputs a high-level signal, the switch tube detection circuit 2 is turned on, and the LED light group 1 lights up; when the doorbell is not pressed by a finger, the doorbell touch module 4 does not receive the touch input signal, the signal output end of the touch module 3 outputs a low-level signal, the switch tube detection circuit 2 is turned off, and the LED light group 1 is off.

[0053] In one embodiment, the transistor Q1 may also be a PNP transistor. The specific test process is as follows:

[0054] If the touch chip U1 works in asynchronous mode, when the doorbell is pressed by a finger, the doorbell touch module 4 receives the touch input signal and outputs the touch input signal to the touch module 3. The signal output end of the touch module 3 outputs a low-level signal, the switch tube detection circuit 2 is turned on, and the LED light group 1 lights up; when the doorbell is not pressed by a finger, the doorbell touch module 4 does not receive the touch input signal, the signal output end of the touch module 3 outputs a high-level signal, the switch tube detection circuit 2 is turned off, and the LED light group 1 is off.

[0055] If the touch chip U1 works in synchronous mode, when the doorbell is pressed by a finger, the doorbell touch module 4 receives the touch input signal and outputs the touch input signal to the touch module 3. The signal output end of the touch module 3 outputs a high-level signal, the switch tube detection circuit 2 is turned off, and the LED light group 1 is off; when the doorbell is not pressed by a finger, the doorbell touch module 4 does not receive the touch input signal, the signal output end of the touch module 3 outputs a low-level signal, the switch tube detection circuit 2 is turned on, and the LED light group 1 is on.

[0056] To sum up, the utility model adopts a simple circuit design and matching. Through the combination of switch tube and LED light, it can intuitively judge whether the doorbell touch module can work normally. No special testing equipment and complicated operation process are required, which greatly simplifies the testing process and improves production efficiency. It can directly test the doorbell touch module instead of partial functions, and can more accurately judge whether the performance of the doorbell meets the design requirements, thereby improving the accuracy of the test. In addition, the testing method of the utility model is simple and easy to implement, and does not require special testing equipment. Therefore, it can reduce the production cost of the doorbell and make it more competitive in the market. Moreover, since the doorbell touch module can be accurately tested, the normal use of the doorbell can be guaranteed, which improves the user experience.

[0057] The above is only a preferred embodiment of the present utility model patent, but the protection scope of the present utility model patent is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present utility model patent based on the technical solution and utility model concept of the present utility model patent, which falls within the protection scope of the present utility model patent.

Claims

1. A testing device for a doorbell touch module, characterized in that: It includes an LED light group, a switch tube detection circuit and a touch module. The signal input end of the touch module is connected to the signal output end of the doorbell touch module. The signal output end of the touch module is connected to the switch tube detection circuit and connected to the LED light group through the switch tube detection circuit to control the state of the LED light group through the switch tube detection circuit.

2. The testing device according to claim 1, wherein: The LED lamp group includes one group of LED lamps or multiple groups of LED lamps connected in parallel, and each group of LED lamps includes a light-emitting diode and a resistor connected in series.

3. The testing device according to claim 1, wherein: The switch tube detection circuit includes a switch tube, a third resistor and a fourth resistor; The signal output end of the touch module is connected to the first electrode of the switch tube, the second electrode of the switch tube is grounded, and the third electrode of the switch tube is connected to the power supply through the LED light group; The third resistor is connected between the first electrode of the switch tube and the signal output end of the touch module, and the fourth resistor is connected between the first electrode and the second electrode of the switch tube.

4. The testing device according to claim 3, characterized in that: The switch tube is a triode or a MOS tube; When the switch tube is a triode, the first electrode, the second electrode and the third electrode of the switch tube correspond to the base, the emitter and the collector respectively; When the switch tube is a MOS tube, the first electrode, the second electrode and the third electrode of the switch tube correspond to the gate, the source and the drain respectively.

5. The testing device according to claim 1, wherein: The touch module includes a touch chip, a first filtering circuit and a second filtering circuit. The touch chip includes a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin, wherein the first pin serves as a signal output end of the touch module, the third pin serves as a signal input end of the touch module and is connected to the signal output end of the doorbell touch module through the first filtering circuit, the second pin, the fourth pin and the sixth pin are grounded, and the fifth pin is connected to a power supply and is connected to the second filtering circuit.

6. The testing device according to claim 5, characterized in that: The first filter circuit includes a first electrostatic protection component, a fifth resistor and a first capacitor. The first electrostatic protection component is connected in series with the fifth resistor and then connected in parallel with the first capacitor.

7. The testing device according to claim 6, characterized in that The third pin of the touch chip is respectively connected to one end of the fifth resistor and one end of the first capacitor, the other end of the fifth resistor is connected to one end of the first electrostatic protection component, the other end of the first electrostatic protection component and the other end of the first capacitor are grounded and connected to the signal output end of the doorbell touch module.

8. The testing device according to claim 5, characterized in that: The second filtering circuit includes a second electrostatic protection component, a second capacitor and a third capacitor, and the second electrostatic protection component, the second capacitor and the third capacitor are connected in parallel.

9. The testing device according to claim 8, characterized in that: The fifth pin of the touch chip is respectively connected to one end of the second electrostatic protection component, one end of the second capacitor, and one end of the third capacitor, and the other end of the second electrostatic protection component, the other end of the second capacitor, and the other end of the third capacitor are grounded.

10. The testing device according to any one of claims 1 to 9, characterized in that: The doorbell touch module is composed of five touch sensor devices connected in parallel, each touch sensor device includes a first pin, a second pin and a third pin, wherein the first pin and the third pin are grounded, and the second pin serves as a signal output end of the doorbell touch module.

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