Circuit structure of NFC (Near Field Communication) test equipment and NFC test equipment

Abstract

The utility model provides a circuit structure of NFC test equipment and the equipment. The circuit structure comprises a PLC module; the input end of the control switch is selectively connected to the positive electrode or the negative electrode of the direct-current power supply, and the output end is connected to the input end of the PLC module; a first execution module, a second execution module, a third execution module and a fourth execution module, each of the four execution modules comprises a relay, an electromagnetic valve and an air cylinder, the control end of the relay is connected to the output end of the PLC module, the relay is connected with the electromagnetic valve, and the electromagnetic valve is used for controlling start and stop of the air cylinder; the control ends of the first driving module and the second driving module are both connected to the output end of the PLC module, and the first driving module and the second driving module are used for controlling movement of air cylinders in the first execution module, the second execution module, the third execution module and the fourth execution module respectively. According to the utility model, the problems of low test efficiency and high labor cost of the existing mode of carrying out NFC test only by manual work can be solved.

Description

Technical Field

[0001] The utility model belongs to the field of testing equipment, and more specifically, relates to a circuit structure and equipment of NFC testing equipment. Background Art

[0002] NFC is developed based on contactless radio frequency identification technology combined with wireless interconnection technology. It provides a very safe and fast communication method for various electronic products that are becoming more and more popular in our daily lives. The use of NFC has high requirements on the recognition distance and recognition rate of electronic products. Based on this, electronic products with NFC function need to be tested for NFC function before leaving the factory.

[0003] The existing NFC testing method is to manually hold an NFC A card or NFC B card to test the electronic product within a certain distance. However, in actual operation, a person needs to hold an NFC card to test the electronic product 4 to 8 times, and some electronic products need to be tested on both sides. Therefore, the testing efficiency is low and the labor cost is increased only by manual testing, which cannot meet the testing requirements for electronic products with NFC functions. Utility Model Content

[0004] The utility model aims to solve the problem that the existing method of only manually performing NFC testing has low testing efficiency and high labor cost.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a circuit structure and equipment of an NFC testing device.

[0006] According to a first aspect of the present utility model, a circuit structure of an NFC testing device is provided, comprising:

[0007] PLC module;

[0008] A control switch, whose input end is selectively connected to the positive or negative pole of the DC power supply, and whose output end is connected to the input end of the PLC module;

[0009] A first execution module, a second execution module, a third execution module and a fourth execution module, each of the four execution modules includes a relay, a solenoid valve and a cylinder, the control end of the relay is connected to the output end of the PLC module, the relay is connected to the solenoid valve, and the solenoid valve is used to control the start and stop of the cylinder;

[0010] A first driving module and a second driving module, wherein the control ends of the first driving module and the second driving module are both connected to the output end of the PLC module, and the two are used to control the movement of the cylinders in the first execution module and the second execution module and the third execution module and the fourth execution module respectively;

[0011] The PLC module controls the closing or opening of the relays, the first drive module, and the second drive module in the four execution modules according to the signal received by the control switch.

[0012] Optionally, the circuit structure further includes a first photoelectric sensor, the input end of the first photoelectric sensor is selectively connected to the positive electrode or the negative electrode of the DC power supply, and the output end is connected to the input end of the PLC module;

[0013] The PLC module controls the closing or opening of the relays in the first and second execution modules and the first driving module according to the signals received by the control switch and the first photoelectric sensor.

[0014] Optionally, the circuit structure further includes a second photoelectric sensor, the input end of the second photoelectric sensor is selectively connected to the positive electrode or the negative electrode of the DC power supply, and the output end is connected to the input end of the PLC module;

[0015] The PLC module controls the closing or opening of the relays in the third execution module and the fourth execution module and the second driving module according to the signals received by the control switch and the second photoelectric sensor.

[0016] Optionally, the first driving module and the second driving module both include a stepper motor and a stepper motor driver connected to the stepper motor.

[0017] Optionally, the circuit structure further includes a reset switch, one end of which is connected to the input end of the PLC module, and the other end of which is selectively suspended or connected to the negative pole of the DC power supply.

[0018] Optionally, the circuit structure further includes a communication module, and the communication module is electrically connected to the PLC module.

[0019] Optionally, the circuit structure further includes a power adapter, the input end of the power adapter is connected to the AC power grid, and the output end outputs the DC power supply.

[0020] Optionally, the PLC module, the relays of the four execution modules, the first drive module, the second drive module, the first photoelectric sensor and the second photoelectric sensor are all powered by the power adapter.

[0021] According to a second aspect of the present invention, there is further provided an NFC testing device, comprising the circuit structure of the NFC testing device according to any one of the first aspects of the present invention.

[0022] The beneficial effects of the utility model are:

[0023] The circuit structure of the NFC testing device proposed by the utility model is to set a PLC module, four execution modules, a first drive module and a second drive module, so that the PLC module can control the closing or opening of the first drive module, the second drive module and the relays in the four execution modules according to the signal received by the control switch, and control the start and stop of the cylinder through the solenoid valve, and the first drive module and the second drive module control the movement of the cylinder to achieve corresponding needs such as driving the NFC card close to the electronic product for testing. Compared with the existing method of only using manual NFC testing, the circuit structure of the utility model can reduce the degree of manual participation and achieve the effect of testing multiple electronic products at the same time, which greatly improves the efficiency of NFC testing of electronic products and reduces labor costs, and can well meet the testing requirements of electronic products with NFC functions.

[0024] According to the above content, the present invention can effectively solve the problems of low testing efficiency and high labor cost in the existing method of only manually performing NFC testing.

[0025] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention may be better understood by referring to the following description in conjunction with the accompanying drawings, in which the same or similar reference numerals are used throughout the drawings to represent the same or similar components.

[0027] Figure 1 A schematic diagram showing a circuit structure of an NFC testing device according to an embodiment of the utility model;

[0028] Figure 2 The figure shows a schematic structural diagram of an NFC testing device according to an embodiment of the present utility model.

[0029] Reference numerals:

[0030] 1-PLC module;

[0031] 2- first execution module;

[0032] 3- Second execution module;

[0033] 4- the third execution module;

[0034] 5- the fourth execution module;

[0035] 6- first driving module;

[0036] 7- second driving module;

[0037] 8- Gas source;

[0038] 9- first photoelectric sensor;

[0039] 10- second photoelectric sensor;

[0040] 11-Reset switch;

[0041] 12-Power adapter;

[0042] 13-Communication module. DETAILED DESCRIPTION

[0043] In order to enable technicians in the relevant technical field to more fully understand the technical solution of the utility model, the exemplary implementation of the utility model will be described in more comprehensive and detailed in conjunction with the accompanying drawings below. Obviously, the one or more implementations of the utility model described below are only one or more of the specific ways to implement the technical solution of the utility model, and are not exhaustive. It should be understood that other ways belonging to a general utility model concept can be used to implement the technical solution of the utility model, and should not be limited by the exemplary description of the implementation. Based on one or more implementations of the utility model, all other implementations obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the utility model.

[0044] Example: Figure 1 A schematic diagram showing a circuit structure of an NFC testing device according to an embodiment of the utility model; Figure 2 The figure shows a schematic structural diagram of an NFC testing device according to an embodiment of the present utility model.

[0045] Reference Figure 1-Figure 2 , an embodiment of the utility model provides a circuit structure of an NFC testing device, comprising:

[0046] PLC module 1;

[0047] A control switch, whose input end is selectively connected to the positive or negative pole of the DC power supply, and whose output end is connected to the input end of the PLC module 1;

[0048] The first execution module 2, the second execution module 3, the third execution module 4 and the fourth execution module 5, each of the four execution modules includes a relay, a solenoid valve and a cylinder, the control end of the relay is connected to the output end of the PLC module 1, the relay is connected to the solenoid valve, and the solenoid valve is used to control the start and stop of the cylinder;

[0049] The first driving module 6 and the second driving module 7, the control ends of the first driving module 6 and the second driving module 7 are both connected to the output end of the PLC module 1, and the two are used to control the movement of the cylinders in the first execution module 2 and the second execution module 3 and the third execution module 4 and the fourth execution module 5 respectively;

[0050] The PLC module 1 controls the closing or opening of the relays, the first drive module 6 and the second drive module 7 in the four execution modules according to the signal received by the control switch.

[0051] Specifically, the control switch is a foot switch. In actual test operations, it needs to be pressed manually so that the input end of the control switch is connected to the negative pole of the DC power supply. The PLC module 1 selectively sends an open signal to the four execution modules, the first drive module 6 and the second drive module 7.

[0052] The relay is composed of an iron core, a coil, an armature, and a contact spring. One end of the coil of the relay in the four execution modules is connected to the Y point of the output end of the PLC module 1, and when the PLC module 1 outputs a signal, the Y point is short-circuited with the common terminal COM. When the output of the Y point is 24V, the other end of the coil is connected to 0V, and when the output of the Y point is 0V, the other end of the coil is connected to 24V. After the coil is energized, it can generate an electromagnetic effect. Under the action of electromagnetic force, the armature drives the moving contact of the armature to close with the static contact. When the coil is powered off, the electromagnetic attraction disappears, and the armature will return to its original position under the reaction force of the spring, disconnecting the moving contact from the original static contact, thereby achieving the purpose of controlling the connection and disconnection of the solenoid valve.

[0053] The solenoid valve controls the on and off of the internal valve by turning the electromagnetic coil on and off. In this circuit structure, the output signal of PLC module 1 controls the on and off of the relay to control the on and off of the solenoid valve, and finally controls the start and stop of the cylinder.

[0054] The gas source 8 provides power for the cylinder to perform piston movement.

[0055] In one embodiment, the circuit structure further includes a first photoelectric sensor 9, the input end of the first photoelectric sensor 9 is selectively connected to the positive electrode or the negative electrode of the DC power supply, and the output end is connected to the input end of the PLC module 1;

[0056] The PLC module 1 controls the closing or opening of the relays in the first execution module 2 and the second execution module 3 and the first driving module 6 according to the signals received by the control switch and the first photoelectric sensor 9 .

[0057] Specifically, the first photoelectric sensor 9 is arranged at a position corresponding to the first driving module 6. It realizes the on and off of the signal by converting the change of light intensity into the change of electrical signal, thereby transmitting the on or off signal to the input end of the PLC module 1. The first photoelectric sensor 9 is used to sense whether the first execution module 2 and the second execution module 3 are located at this position, so as to ensure that each movement of the first execution module 2 and the second execution module 3 driven by the first driving module 6 takes this position as the starting point, thereby realizing the precise positioning of the first execution module 2 and the second execution module 3.

[0058] In one embodiment, the circuit structure further includes a second photoelectric sensor 10, the input end of the second photoelectric sensor 10 is selectively connected to the positive electrode or the negative electrode of the DC power supply, and the output end is connected to the input end of the PLC module 1;

[0059] The PLC module 1 controls the closing or opening of the relays in the third execution module 4 and the fourth execution module 5 and the second driving module 7 according to the signals received by the control switch and the second photoelectric sensor 10 .

[0060] Specifically, the second photoelectric sensor 10 is arranged at a position corresponding to the second driving module 7. It has the same structural principle as the first photoelectric sensor 9 and is used to sense whether the third execution module 4 and the fourth execution module 5 are located at this position, so as to ensure that each movement of the third execution module 4 and the fourth execution module 5 driven by the second driving module 7 takes this position as the starting point, thereby realizing precise positioning of the third execution module 4 and the fourth execution module 5.

[0061] In a specific embodiment, the first driving module 6 and the second driving module 7 both include a stepper motor and a stepper motor driver connected to the stepper motor. Specifically, the stepper motor driver is an actuator that converts electrical pulses into angular displacements. The principle of the stepper motor driver is to use a unipolar DC power supply to energize each phase winding of the stepper motor at a suitable timing, so that the stepper motor rotates in steps, thereby achieving the effect of controlling the movement of the cylinders in the four execution modules.

[0062] In one embodiment, the circuit structure further includes a reset switch 11, one end of the reset switch 11 is connected to the input end of the PLC module 1, and the other end is selectively suspended or connected to the negative pole of the DC power supply.

[0063] Specifically, when the other end of the reset switch 11 is connected to the negative pole of the DC power supply, an electrical signal is transmitted to the PLC module 1, so that the PLC module 1 starts the first drive module 6 and / or the second drive module 7 to move the four execution modules to the starting point.

[0064] In one embodiment, the circuit structure further includes a power adapter 12, the input end of the power adapter 12 is connected to the AC power grid, and the output end outputs a DC power supply.

[0065] In one embodiment, the PLC module 1 , the relays of the four execution modules, the first drive module 6 , the second drive module 7 , the first photoelectric sensor 9 and the second photoelectric sensor 10 are all powered by a power adapter 12 .

[0066] Specifically, the power adapter 12 is used to convert the 220V AC voltage into a 24V DC voltage for powering the PLC module 1, the relays of the four execution modules, the first drive module 6, the second drive module 7, the first photoelectric sensor 9 and the second photoelectric sensor 10.

[0067] In one embodiment, the circuit structure further includes a communication module 13 , and the communication module 13 is electrically connected to the PLC module 1 .

[0068] In a specific embodiment, the communication module 13 is electrically connected to the PLC module 1 via an RS-232 data line, and is used to physically connect the touch screen of the NFC test device to the PLC module 1. A communication connection is established through a specified communication protocol such as baud rate, check bit or data bit, and after the connection is successful, the touch screen can write or read data with the PLC module according to a fixed message format to achieve an interactive function.

[0069] When the circuit structure of the embodiment of the utility model is in operation, the reset switch 11 is first pressed to connect one end of the reset switch 11 to the negative pole of the DC power supply, and the electrical signal is transmitted to the PLC module 1, so that the PLC module 1 starts the first drive module 6 and / or the second drive module 7 to move the four execution modules to the starting point.

[0070] When it is necessary to perform an NFC test on the upper surface of an electronic product, the control switch can be pressed to enable the PLC module 1 to start the first execution module 2 and the first drive module 6, the relay in the first execution module 2 is energized, the solenoid valve is controlled to start the cylinder to extend first, the stepper driver drives the stepper motor to drive the cylinder to move downward to 0 mm from the electronic product under test, and return to its original position after staying for 2 seconds. After the first photoelectric sensor 9 senses that the cylinder is at the starting origin, the first test is completed, the control switch is pressed and the above operation is repeated, so that the stepper driver drives the stepper motor to drive the cylinder and the NFC A card to move downward to 4 mm from the electronic product under test, completing the second test, and the control switch is pressed again to enable the PLC module 1 to start the second execution module 3 and the first drive module 6, the relay in the second execution module 3 is energized, the solenoid valve is controlled to start the cylinder to extend first, the stepper driver drives the stepper motor to drive the cylinder and NFC The B card moves downward to a distance of 0 mm from the electronic product under test, and returns to its original position after staying for 2 seconds. After the first photoelectric sensor 9 senses that the cylinder is at the starting point, the third test is completed. The control switch is pressed and the above operation is repeated, so that the stepper driver drives the stepper motor to drive the cylinder and the NFC B card to move downward to a distance of 4 mm from the electronic product under test, completing the fourth test.

[0071] When it is necessary to perform an NFC test on the lower surface of the electronic product, the control switch can be pressed to enable the PLC module 1 to start the third execution module 4 and the second drive module 7, and the above operation can be repeated to complete two tests on the lower surface of the electronic product. The control switch can be pressed again to enable the PLC module 1 to start the fourth execution module 5 and the second drive module 7 to complete four tests on the lower surface of the electronic product.

[0072] When it is necessary to perform NFC tests on the front and back of an electronic product at the same time, the control switch can be pressed to cause the PLC module 1 to simultaneously start the first drive module 6 and the second drive module 7, control the four execution modules to start in sequence, and repeat the above operations to complete eight tests on the electronic product.

[0073] The circuit structure of the NFC testing device proposed by the utility model is to set a PLC module, four execution modules, a first drive module and a second drive module, so that the PLC module can control the first drive module to sequentially drive the first execution module and the second execution module, and the second drive module to sequentially drive the closing or disconnection of the relays in the third execution module and the fourth execution module according to the signal received by the control switch, and control the start and stop of the cylinder through the solenoid valve, and control the movement of the cylinder through the stepper motor, so as to realize corresponding requirements such as driving the NFC card close to the electronic product for testing.

[0074] Furthermore, the circuit structure of the utility model can be provided with a first photoelectric sensor and a second photoelectric sensor, which can sense the positions of the four execution modules, and achieve precise positioning of the four execution modules through the first driving module and the second driving module, thereby improving the efficiency and accuracy of the NFC test.

[0075] In summary, compared with the existing method of only using manual labor to perform NFC testing, the circuit structure of the utility model can reduce the degree of manual participation and achieve the effect of testing multiple electronic products at the same time, which greatly improves the efficiency of NFC testing of electronic products and reduces labor costs. It can well meet the testing requirements for electronic products with NFC functions.

[0076] like Figure 2 As shown, accordingly, the embodiment of the present utility model further proposes an NFC testing device, including the circuit structure of the NFC testing device in the embodiment of the present utility model.

[0077] Although one or more embodiments of the utility model are described above, it should be known to those skilled in the art that the utility model can be implemented in any other form without departing from its subject matter and scope. Therefore, the embodiments described above are illustrative rather than restrictive, and many modifications and substitutions are obvious to those skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A circuit structure of an NFC testing device, characterized in that: include: PLC module; A control switch, whose input end is selectively connected to the positive or negative pole of the DC power supply, and whose output end is connected to the input end of the PLC module; A first execution module, a second execution module, a third execution module and a fourth execution module, each of the four execution modules includes a relay, a solenoid valve and a cylinder, the control end of the relay is connected to the output end of the PLC module, the relay is connected to the solenoid valve, and the solenoid valve is used to control the start and stop of the cylinder; A first driving module and a second driving module, wherein the control ends of the first driving module and the second driving module are both connected to the output end of the PLC module, and the two are used to control the movement of the cylinders in the first execution module and the second execution module and the third execution module and the fourth execution module respectively; The PLC module controls the closing or opening of the relays, the first drive module, and the second drive module in the four execution modules according to the signal received by the control switch.

2. The circuit structure of the NFC testing device according to claim 1, characterized in that: The circuit structure further includes a first photoelectric sensor, the input end of the first photoelectric sensor is selectively connected to the positive electrode or the negative electrode of the DC power supply, and the output end is connected to the input end of the PLC module; The PLC module controls the closing or opening of the relays in the first and second execution modules and the first driving module according to the signals received by the control switch and the first photoelectric sensor.

3. The circuit structure of the NFC testing device according to claim 2, characterized in that: The circuit structure further includes a second photoelectric sensor, the input end of the second photoelectric sensor is selectively connected to the positive electrode or the negative electrode of the DC power supply, and the output end is connected to the input end of the PLC module; The PLC module controls the closing or opening of the relays in the third execution module and the fourth execution module and the second driving module according to the signals received by the control switch and the second photoelectric sensor.

4. The circuit structure of the NFC testing device according to claim 3, characterized in that: The first driving module and the second driving module each include a stepper motor and a stepper motor driver connected to the stepper motor.

5. The circuit structure of the NFC testing device according to claim 4, characterized in that: The circuit structure also includes a reset switch, one end of which is connected to the input end of the PLC module, and the other end of which is selectively suspended or connected to the negative pole of the DC power supply.

6. The circuit structure of the NFC testing device according to claim 5, characterized in that: The circuit structure also includes a communication module, and the communication module is electrically connected to the PLC module.

7. The circuit structure of the NFC testing device according to claim 6, characterized in that: The circuit structure also includes a power adapter, the input end of the power adapter is connected to the AC power grid, and the output end outputs the DC power.

8. The circuit structure of the NFC testing device according to claim 7, characterized in that: The PLC module, the relays of the four execution modules, the first drive module, the second drive module, the first photoelectric sensor and the second photoelectric sensor are all powered by the power adapter.

9. An NFC testing device, characterized in that: A circuit structure comprising the NFC testing device according to any one of claims 1 to 8.

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