A screen testing device, method, medium and product

Abstract

The present application discloses a device, method, medium and product for screen testing, and relates to the field of screen testing. The screen switch circuit includes a resistor sensor with adjustable resistance; the host computer outputs a set current threshold; the host computer communication module outputs a voltage signal; the resistor sensor adjusts the resistance value based on the current threshold according to the voltage signal; the screen switch circuit determines the working current based on the amplified voltage; the host computer communication module compares the working voltage with the current threshold, and controls the operating state of the screen switch circuit according to the comparison result; if it is in the working on state, the voltage of the screen end to be tested is obtained in real time, and matched with the preset voltage range, if the voltage of the screen end to be tested is not within the preset voltage range, a feedback signal is output to the host computer; the host computer issues a warning message based on the feedback signal, and an alarm is issued to remind the staff. The present application aims to achieve batch and flexible detection of screens.

Description

Technical Field

[0001] The present application relates to the field of screen testing, and in particular to a device, method, medium and product for screen testing. Background Art

[0002] In the screen display industry, screens need to be tested after they are produced to determine their quality. When testing screens, a balance is sought among efficiency, success rate, cost, and technical complexity. If one or several items are not up to standard during implementation, it will have an adverse effect on the company's production and affect the company's production efficiency.

[0003] Currently, there is a method to judge the quality of a screen by detecting the size of the screen's working current value. However, this method has problems such as a small number of detections at one time, inability to automatically cut off the power supply to the defective screen to prevent the screen from burning out due to continuous operation in an abnormal state, and inability to set different current thresholds to adapt to different screens.

[0004] Therefore, there is an urgent need for a device that can perform batch testing and has high flexibility to meet the production requirements of enterprises. Summary of the invention

[0005] The purpose of this application is to provide a device, method, medium and product for screen testing, which can realize batch and flexible testing of screens.

[0006] To achieve the above objectives, this application provides the following solutions:

[0007] In a first aspect, the present application provides a device for screen testing, comprising: a host computer, a host computer communication module, and a screen switch circuit;

[0008] The screen switch circuit is connected to the host computer communication module; the host computer communication module is connected to the host computer; the screen switch circuit is also connected to at least one screen to be tested;

[0009] The screen switch circuit includes a resistance sensor with adjustable resistance value;

[0010] The host computer is used to output a set current threshold;

[0011] The host computer communication module is used to receive the current threshold; the host computer communication module is also used to output a voltage signal;

[0012] The resistance sensor is used to adjust the resistance value based on the current threshold according to the voltage signal;

[0013] The screen switch circuit is used to determine the working current based on the amplified voltage; the amplified voltage is determined based on the voltage corresponding to the resistance sensor and the voltage of the external power supply terminal;

[0014] The host computer communication module is used for:

[0015] Obtaining a comparison result according to comparing the operating voltage with the current threshold;

[0016] Controlling the operating state of the screen switch circuit according to the comparison result; the operating state is operation on or off;

[0017] If the screen switch circuit is in the working on state, the voltage of the screen end to be tested is obtained in real time and matched with the preset voltage range. If the voltage of the screen end to be tested is not within the preset voltage range, a feedback signal is output to the host computer;

[0018] The host computer sends out early warning information according to the feedback signal and sounds an alarm to remind the staff.

[0019] Optionally, the screen switch circuit further includes: an amplifier, a comparator, a triode, a PMOS tube, a first resistor and a second resistor;

[0020] One end of the first resistor is connected to the power supply end and the first end of the amplifier respectively; the other end of the first resistor is connected to the PMOS tube and the second end of the amplifier respectively; the output end of the amplifier is connected to the reverse input end of the comparator;

[0021] The second resistor is connected in parallel with the resistance sensor and connected to the same-direction input terminal of the comparator after being connected in parallel;

[0022] The output end of the comparator is connected to the triode, and the triode is also connected to the PMOS tube; the PMOS tube is connected to the screen to be tested.

[0023] Optionally, the screen switch circuit further includes: a first ground terminal and a second ground terminal;

[0024] The first ground terminal is respectively connected to the amplifier, the comparator and the triode;

[0025] The second grounding terminal is connected to the screen to be tested.

[0026] Optionally, the host computer communication module is connected to the host computer via a 232 serial port.

[0027] Optionally, the host computer communication module includes a single-chip microcomputer.

[0028] Optionally, the model of the single chip microcomputer is STM32.

[0029] In a second aspect, the present application provides a screen testing method, which is implemented by a screen testing device; the screen testing method includes:

[0030] Obtain the set current threshold and output a voltage signal;

[0031] The control resistor sensor adjusts the resistance value based on the current threshold according to the voltage signal;

[0032] The screen switch circuit is controlled to determine the working current based on the amplified voltage; the amplified voltage is determined based on the voltage corresponding to the resistance sensor and the voltage of the external power supply terminal;

[0033] Obtaining a comparison result according to comparing the operating voltage with the current threshold;

[0034] Controlling the operating state of the screen switch circuit according to the comparison result; the operating state is operation on or off;

[0035] If the screen switch circuit is in the working on state, the voltage of the screen end to be tested is obtained in real time and matched with the preset voltage range. If the voltage of the screen end to be tested is not within the preset voltage range, a feedback signal is output.

[0036] Optionally, the screen testing method further includes:

[0037] An early warning message is issued according to the feedback signal, and an alarm is sounded to remind the staff.

[0038] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which implements the above-mentioned screen testing method when executed by a processor.

[0039] In a fourth aspect, the present application provides a computer program product, including a computer program, which implements the above-mentioned screen testing method when executed by a processor.

[0040] According to the specific embodiments provided in this application, this application has the following technical effects:

[0041] The present application provides a device, method, medium and product for screen testing. Since the screen switch circuit is connected to at least one screen to be tested, batch testing of the screens to be tested can be achieved. Since the screen switch circuit includes a resistor sensor with adjustable resistance, the detection threshold can be flexibly changed according to the characteristics of different screens to be tested and the current detection conditions, thereby achieving flexible and diversified application of the device. The upper computer communication module compares the working voltage with the current threshold, and controls the operating state of the screen switch circuit according to the comparison result; when the screen switch circuit is in the working on state, the voltage at the end of the screen to be tested is obtained in real time and matched with the preset voltage range. If the voltage at the end of the screen to be tested is not within the preset voltage range, a feedback signal is output to the upper computer for early warning, thereby achieving the test of the screen to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A diagram of the device used for screen testing;

[0044] Figure 2 External structure diagram of the device for screen testing;

[0045] Figure 3 This is the circuit diagram of the screen switch circuit. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] The current detection equipment has only one screen socket and can only connect one screen at a time; the screen power supply of the device cannot be automatically cut off to prevent the screen from burning; the current sampling resistor has a fixed resistance value and cannot change the detection current judgment threshold in the circuit. There are problems such as a small number of tests at a time, the inability to automatically cut off the power supply of a bad screen to prevent the screen from burning out when it continues to work in an abnormal state, and the inability to set different current thresholds to adapt to different screens. Therefore, the present application provides a device, method, medium and product for screen testing, which can realize batch and flexible detection of screens.

[0048] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0049] Example 1

[0050] like Figure 1 As shown, the present application provides a screen testing device, which includes: a host computer, a host computer communication module and a screen switch circuit.

[0051] The screen switch circuit is connected to the host computer communication module; the host computer communication module is connected to the host computer; the screen switch circuit is also connected to at least one screen to be tested.

[0052] The screen switch circuit includes a resistor sensor with adjustable resistance; the host computer is used to output a set current threshold; the host computer communication module is used to receive the current threshold; and the host computer communication module is also used to output a voltage signal.

[0053] The resistor sensor is used to adjust the resistor value based on the current threshold according to the voltage signal; the screen switch circuit is used to determine the working current based on the amplified voltage; the amplified voltage is determined based on the voltage corresponding to the resistor sensor and the voltage of the external power supply end.

[0054] The upper computer communication module is used to compare the working voltage with the current threshold to obtain a comparison result; and to control the operating state of the screen switch circuit according to the comparison result; the operating state is to turn on or off the work.

[0055] The host computer communication module is used to obtain the voltage of the screen to be tested in real time when the screen switch circuit is in the working on state, and match it with the preset voltage range. If the voltage of the screen to be tested is not within the preset voltage range, a feedback signal is output to the host computer.

[0056] The host computer issues early warning information based on the feedback signal and sounds an alarm to remind the staff.

[0057] External structure of the screen test device Figure 2 .like Figure 3 As shown, the screen switch circuit also includes: an amplifier U1, a comparator U2, a transistor Q1, a PMOS transistor Q2, a first resistor R1 and a second resistor R2.

[0058] One end of the first resistor R1 is connected to the power supply terminal VCC and the first end of the amplifier U1 respectively; the other end of the first resistor R1 is connected to the PMOS tube Q2 and the second end of the amplifier U1 respectively; the output end of the amplifier U1 is connected to the reverse input end of the comparator U2.

[0059] The second resistor R2 is connected in parallel with the resistor sensor RS1 and connected to the non-inverting input terminal of the comparator U2 after being connected in parallel.

[0060] The output end of the comparator U2 is connected to the transistor Q1, and the transistor Q1 is also connected to the PMOS transistor Q2; the PMOS transistor Q2 is connected to the screen SCREEN to be tested.

[0061] The screen switch circuit also includes: a first ground terminal GND1 and a second ground terminal GND2; the first ground terminal GND1 is respectively connected to the amplifier U1, the comparator U2 and the transistor Q1; the second ground terminal GND2 is connected to the screen SCREEN to be tested.

[0062] The host computer communication module is connected to the host computer through a 232 serial port. The host computer communication module includes a single-chip microcomputer. The model of the single-chip microcomputer is STM32.

[0063] Example 2

[0064] The present application embodiment provides a screen testing method, which is implemented by using the screen testing device in Embodiment 1; the screen testing method includes:

[0065] Get the set current threshold and output voltage signal.

[0066] The control resistor sensor adjusts the resistor value based on the current threshold according to the voltage signal.

[0067] The screen switch circuit is controlled to determine the operating current based on the amplified voltage; the amplified voltage is determined based on the voltage corresponding to the resistance sensor and the voltage at the external power supply terminal.

[0068] The operating voltage is compared with the current threshold to obtain a comparison result.

[0069] The operating state of the screen switch circuit is controlled according to the comparison result; the operating state is working on or off.

[0070] If the screen switch circuit is in the working on state, the voltage of the screen to be tested is obtained in real time and matched with the preset voltage range. If the voltage of the screen to be tested is not within the preset voltage range, a feedback signal is output.

[0071] According to the feedback signal, early warning information is issued and an alarm is sounded to remind the staff.

[0072] The screen testing device provided in the present application can be connected to multiple screens at the same time, and the current limit value of each screen can be set through the host computer. When the working current of a certain screen exceeds the current limit value (current threshold), the power supply to the screen can be automatically cut off, and an alarm message can be displayed on the host computer interface.

[0073] The host computer communication module is responsible for communicating with the host computer and controlling the screen switch circuit; the host computer communication module uses a 232 serial port to communicate with the host computer, and the screen switch circuit is composed of a resistor sensor, an operational amplifier, a PMOS, etc.

[0074] The user sets the current limit value of each screen on the host computer, and the host computer transmits the value to the microcontroller in the host computer communication module through the 232 serial port. The microcontroller outputs a voltage signal RSignal to each resistance sensor RS1, and the resistance sensor RS1 adjusts its resistance value according to this voltage.

[0075] After the resistance value of RS1 is adjusted, the voltage at the non-inverting input terminal of the comparator U2 is determined; the power supply terminal VCC generates a differential voltage through the first resistor R1 (sampling resistor), and the voltage enters the differential input terminal of the amplifier U1. The amplified voltage output by the amplifier U1 enters the inverting input terminal of the comparator U2.

[0076] When the operating current exceeds the set threshold, the comparator U2 outputs a low level, which disconnects the transistor Q1 and then the PMOS tube Q2, thereby cutting off the power supply to the screen to be tested.

[0077] When the PMOS tube Q2 is turned on, the Alarm voltage at the screen end to be tested is high. When the PMOS tube Q2 is turned off, the Alarm voltage is low. The Alarm voltage is transmitted to the microcontroller in the communication module of the host computer. After processing by the microcontroller, it is transmitted to the host computer. When the Alarm voltage is high, the host computer does not alarm, otherwise it alarms.

[0078] The present application can realize the effects of detecting multiple screens to be tested at one time, quickly shutting down abnormal screens, and adjusting the detection current threshold.

[0079] Testing multiple screens at a time can improve the efficiency of testing equipment and reduce the cost of equipment used by enterprises.

[0080] The screen switch circuit designed using a resistance sensor has an adjustable resistance value for current sampling, so the detection threshold can be flexibly changed according to the characteristics of different screens to be tested and current detection conditions, thereby achieving flexible and diversified applications of the equipment; and the power supply can be automatically shut down.

[0081] The host computer communication module uses the 232 serial port to communicate with the host computer. The user can freely adjust the detection threshold on the host computer, which is easy to operate and highly flexible. In addition, the host computer can display alarm information.

[0082] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0083] In an exemplary embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0084] In this application, all actions to obtain signals, information or data are carried out in compliance with the relevant data protection laws and policies of the country where they are located and with the authorization of the corresponding device owner. It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0085] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0086] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0087] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the device, method and its core idea of ​​this application; at the same time, for those skilled in the art, according to the idea of ​​this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A screen testing device, characterized in that: The screen test device comprises: a host computer, a host computer communication module and a screen switch circuit; The screen switch circuit is connected to the host computer communication module; the host computer communication module is connected to the host computer; the screen switch circuit is also connected to at least one screen to be tested; The screen switch circuit includes a resistance sensor with adjustable resistance value; The host computer is used to output a set current threshold; The host computer communication module is used to receive the current threshold; the host computer communication module is also used to output a voltage signal; The resistance sensor is used to adjust the resistance value based on the current threshold according to the voltage signal; The screen switch circuit is used to determine the working current based on the amplified voltage; the amplified voltage is determined based on the voltage corresponding to the resistance sensor and the voltage of the external power supply terminal; The host computer communication module is used for: Obtaining a comparison result according to comparing the operating voltage with the current threshold; Controlling the operating state of the screen switch circuit according to the comparison result; the operating state is operation on or off; If the screen switch circuit is in the working on state, the voltage of the screen end to be tested is obtained in real time and matched with the preset voltage range. If the voltage of the screen end to be tested is not within the preset voltage range, a feedback signal is output to the host computer; The host computer sends out early warning information according to the feedback signal and sounds an alarm to remind the staff.

2. The screen testing device according to claim 1, characterized in that: The screen switch circuit also includes: an amplifier, a comparator, a triode, a PMOS tube, a first resistor and a second resistor; One end of the first resistor is connected to the power supply end and the first end of the amplifier respectively; the other end of the first resistor is connected to the PMOS tube and the second end of the amplifier respectively; the output end of the amplifier is connected to the reverse input end of the comparator; The second resistor is connected in parallel with the resistance sensor and connected to the same-direction input terminal of the comparator after being connected in parallel; The output end of the comparator is connected to the triode, and the triode is also connected to the PMOS tube; the PMOS tube is connected to the screen to be tested.

3. The screen testing device according to claim 2, characterized in that: The screen switch circuit also includes: a first ground terminal and a second ground terminal; The first ground terminal is respectively connected to the amplifier, the comparator and the triode; The second grounding terminal is connected to the screen to be tested.

4. The screen testing device according to claim 1, characterized in that: The host computer communication module is connected to the host computer via a 232 serial port.

5. The screen testing device according to claim 1, characterized in that: The host computer communication module includes a single chip microcomputer.

6. The screen testing device according to claim 5, characterized in that: The model of the single chip microcomputer is STM32.

7. A screen testing method, characterized in that: The screen testing method is implemented by using the screen testing device described in any one of claims 1 to 6; the screen testing method comprises: Obtain the set current threshold and output a voltage signal; The control resistor sensor adjusts the resistance value based on the current threshold according to the voltage signal; The screen switch circuit is controlled to determine the working current based on the amplified voltage; the amplified voltage is determined based on the voltage corresponding to the resistance sensor and the voltage of the external power supply terminal; Obtaining a comparison result according to comparing the operating voltage with the current threshold; Controlling the operating state of the screen switch circuit according to the comparison result; the operating state is operation on or off; If the screen switch circuit is in the working on state, the voltage of the screen end to be tested is obtained in real time and matched with the preset voltage range. If the voltage of the screen end to be tested is not within the preset voltage range, a feedback signal is output.

8. The screen testing method according to claim 7, characterized in that: The screen testing method further includes: An early warning message is issued according to the feedback signal, and an alarm is sounded to remind the staff.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the screen testing method described in any one of claims 7 to 8 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the screen testing method described in any one of claims 7 to 8 is implemented.

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