Testing device and method for doorbell touch module

Abstract

The invention discloses a doorbell touch module testing device and method.The device comprises an LED lamp set, 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 set. 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. The doorbell touch module can be effectively tested without using special testing 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 invention relates to a testing device and method for a doorbell touch module, belonging to the technical field of testing doorbell touch modules. Background Art

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

[0003] However, there are still some problems in the practical application of the above-mentioned prior art: first, the existing testing methods are often complicated and require special testing equipment and complicated operation procedures, which not only increases the production cost of the doorbell, but also reduces the production efficiency; second, the existing testing methods can often only test some functions of the doorbell, and the existing testing methods often cannot accurately judge whether the touch module of the doorbell can work normally. Therefore, how to design a method that is simple and easy to implement, and can accurately test whether the touch module of the doorbell is normal, has become a difficult problem in the prior art. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and to 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] Another object of the present invention is to provide a method for testing a doorbell touch module.

[0006] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0007] A testing device for a doorbell touch module comprises an LED light group, a switch tube detection circuit and a touch module, wherein a signal input end of the touch module is connected to a signal output end of the doorbell touch module, a signal output end of the touch module is connected to a base of the switch tube detection circuit, a collector of the switch tube detection circuit is connected to the LED light group, and an emitter of the switch tube detection circuit is grounded.

[0008] 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.

[0009] Furthermore, the switch tube detection circuit includes a switch tube, a third resistor and a fourth resistor;

[0010] The signal output end of the touch module is connected to the first pole of the switch tube, the second pole of the switch tube is grounded, and the third pole of the switch tube is connected to the power supply through the LED lamp group;

[0011] 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;

[0012] The switch tube is a triode or a MOS tube;

[0013] 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;

[0014] 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.

[0015] Furthermore, 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 the power supply and is connected to the second filtering circuit.

[0016] Furthermore, the first filtering circuit includes a first electrostatic protection component, a fifth resistor and a first capacitor, and the first electrostatic protection component is connected in series with the fifth resistor and then connected in parallel with the first capacitor.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] Another object of the present invention can be achieved by adopting the following technical solutions:

[0022] A method for testing a doorbell touch module is implemented based on the above-mentioned testing device, and the method includes:

[0023] Power input voltage, and keep the input voltage unchanged;

[0024] When the signal output terminal of the touch module outputs a first level signal, the switch tube detection circuit is cut off and the LED light group is turned off;

[0025] When the signal output terminal of the touch module outputs the second level signal, the switch tube detection circuit is turned on and the LED light group lights up.

[0026] The present invention has the following beneficial effects compared with the prior art:

[0027] 1. The present invention adopts a simple circuit design and matching. Through the combination of the switch tube and the LED lamp, 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, thereby improving the accuracy of the test.

[0028] 2. The testing method of the present invention is simple and easy to implement, and does not require special testing equipment. Therefore, the production cost of the doorbell can be reduced, making it more competitive in the market. In addition, 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

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0030] Figure 1 The present invention is a block diagram of the structure principle of a testing device for a doorbell touch module according to an embodiment of the present invention.

[0031] Figure 2The figure is a circuit diagram of a testing device for a doorbell touch module according to an embodiment of the present invention.

[0032] 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.

[0033] Figure 4 This is a schematic diagram of a switch tube detection circuit of a testing device for a doorbell touch module according to an embodiment of the present invention.

[0034] Figure 5 The touch module circuit schematic diagram of the doorbell touch module testing device according to an embodiment of the present invention.

[0035] Figure 6 The figure is a schematic diagram of a doorbell touch module according to an embodiment of the present invention.

[0036] Figure 7 The present invention is a test flow chart of a test device for a doorbell touch module according to an embodiment of the present invention.

[0037] 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

[0038] 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, rather than all 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.

[0039] Example:

[0040] like Figure 1 and Figure 2As shown, the present embodiment provides a testing device for a doorbell touch module, which includes an LED light group 1, a switch tube detection circuit 2 and a touch module 3, wherein 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.

[0041] In one embodiment, Figure 1 to Figure 3 As 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 two LED lamps can be set so that when one of the LED lamps is damaged, the other LED lamp will not be affected. Normal operation.

[0042] 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 a power supply, which is a 3V3 power supply and can input a 3V3 voltage. The LED lamp group 1 is continuously powered by the 3V3 power supply.

[0043] In one embodiment, Figure 1-2 , Figure 4 As shown, the switch tube detection circuit 2 includes a switch tube, a third resistor R3 and a fourth resistor R4, wherein the switch 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, and the emitter of the transistor Q1 is grounded. The collector of the transistor Q1 is connected to the power supply through the LED lamp group, specifically connected 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.

[0044] 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.

[0045] In one embodiment, Figure 1-2 , Figure 5 As 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 a signal output end of the touch module 3, the third pin serves as a 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.

[0046] 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.

[0047] 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.

[0048] In one embodiment, the second filtering circuit includes a second electrostatic protection component ESD2, a second capacitor C1 and a third capacitor C2, and the second electrostatic protection component ESD1, the second capacitor C1 and the third capacitor C3 are connected in parallel.

[0049] 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.

[0050] In one embodiment, Figure 1-2 , Figure 6As 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 a 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.

[0051] like Figure 1 to Figure 7 As shown, the testing process of the doorbell touch module of this embodiment is as follows:

[0052] S1, power input voltage, and keep the input voltage unchanged.

[0053] 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 lamp group 1 is turned off.

[0054] 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 off.

[0055] S3. When the signal output terminal of the touch module 3 outputs a second level signal, the switch tube detection circuit 2 is turned on, and the LED light group 1 lights up.

[0056] 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 is on.

[0057] In one embodiment, the touch chip U1 can also work in a synchronous mode, and the specific test process is as follows:

[0058] 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.

[0059] In one embodiment, the transistor Q1 may also be a PNP transistor, and the specific test process is as follows:

[0060] 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 is on; 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.

[0061] 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.

[0062] In summary, the present invention adopts a simple circuit design and matching. Through the combination of a switch tube and an LED light, it can intuitively determine whether the doorbell touch module can work normally. No special testing equipment and complicated operating procedures are required, which greatly simplifies the testing process and improves production efficiency. The doorbell touch module can be directly tested instead of partial functions, so it can more accurately determine whether the performance of the doorbell meets the design requirements, thereby improving the accuracy of the test. In addition, the testing method of the present invention is simple and easy to implement, and does not require special testing equipment. Therefore, the production cost of the doorbell can be reduced, 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.

[0063] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and inventive concept of the present invention within the scope disclosed by the present invention, which shall fall within the protection scope of the present invention.

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, characterized in that: 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, characterized in that: The switch tube detection circuit comprises a switch tube, a third resistor and a fourth resistor; The signal output end of the touch module is connected to the first pole of the switch tube, the second pole of the switch tube is grounded, and the third pole of the switch tube is connected to the power supply through the LED lamp 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; 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.

4. The testing device according to claim 1, characterized in that: 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.

5. The testing device according to claim 4, characterized in that: 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 connected in parallel with the first capacitor.

6. The testing device according to claim 5, 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.

7. The testing device according to claim 4, 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.

8. The testing device according to claim 7, 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.

9. The testing device according to any one of claims 1 to 8, characterized in that: The doorbell touch module is composed of five touch sensor devices connected in parallel, each of which 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.

10. A method for testing a doorbell touch module, implemented based on the testing device according to any one of claims 1 to 9, characterized in that: The method comprises: Power input voltage, and keep the input voltage unchanged; When the signal output terminal of the touch module outputs a first level signal, the switch tube detection circuit is cut off and the LED light group is turned off; When the signal output terminal of the touch module outputs the second level signal, the switch tube detection circuit is turned on and the LED light group lights up.

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