White balance automatic adjusting device and system

Abstract

The embodiment of the utility model relates to the technical field of white balance adjustment, and discloses a white balance automatic adjustment device and system, and the device comprises an industrial personal computer, a signal generator, a color analyzer and a remote controller. The industrial personal computer controls the signal generator to generate a test image signal; the signal generator sends a test image signal to the display equipment to be tested; the industrial personal computer controls the color analyzer to obtain screen color parameters of the display equipment to be tested when the display equipment to be tested displays the test image; the color analyzer sends the screen color parameters to the industrial personal computer; the PID controller determines a white balance correction parameter according to the screen color parameter and a preset color range; the industrial personal computer generates an adjustment instruction according to the white balance correction parameter and sends the adjustment instruction to a remote controller; and the remote controller adjusts the white balance parameter of the to-be-tested display device according to the adjustment instruction. By means of the mode, white balance adjustment of the display device is simply, conveniently and rapidly completed.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of white balance adjustment, and in particular to an automatic white balance adjustment device and system. Background Art

[0002] White balance calibration is an important step in the manufacturing process of display devices (such as televisions, computers, etc.). After manufacturing, the display device needs to be calibrated and adjusted to ensure that the color of the display device can be displayed accurately.

[0003] In the prior art, the white balance adjustment of the display device depends on manual work. After the display device displays a white image, the staff adjusts the white balance of the display device based on their own judgment.

[0004] When adjusting, the staff needs to compare the white image currently displayed by the display device with the standard white image, and correct the error between the white image displayed by the display device and the standard white one by one. This process requires multiple calibrations, which can easily cause damage to the human eye and cause staff to make misjudgments. It also relies on human adjustment experience. Even for skilled staff, it is difficult to complete the white balance adjustment of the display device in a short time. The adjustment process is too time-consuming and cumbersome.

[0005] Therefore, how to easily and quickly complete the white balance adjustment of the display device has become a technical problem that needs to be solved urgently. Utility Model Content

[0006] In view of the above problems, the embodiments of the present application provide a white balance automatic adjustment device and system for solving the problem in the prior art that the white balance adjustment of the display device is too time-consuming and cumbersome.

[0007] According to one aspect of an embodiment of the present application, a white balance automatic adjustment device is provided, the device comprising: an industrial computer, a signal generator, a color analyzer and a remote controller; the industrial computer is electrically connected to the signal generator and is used to control the signal generator to generate a test image signal; the signal generator is used to be electrically connected to a display device to be tested and send a test image signal to the display device to be tested, so that the display device to be tested displays a test image according to the test image signal; the industrial computer is also electrically connected to the color analyzer and is used to control the color analyzer to obtain screen color parameters of the display device to be tested when the display device to be tested displays the test image; the color analyzer is also used to, after obtaining the screen color parameters, The screen color parameters are sent to the industrial computer; the industrial computer includes a PID controller, and the PID controller is used to determine the white balance correction parameters according to the screen color parameters and the preset color range after receiving the screen color parameters sent by the color analyzer; the industrial computer is also electrically connected to the remote control, and is used to generate an adjustment instruction according to the white balance correction parameters after reading the white balance correction parameters generated by the PID controller, and send the adjustment instruction to the remote control; the remote control is used to communicate with the display device to be tested, and the remote control is used to adjust the white balance parameters of the display device to be tested according to the adjustment instruction after receiving the adjustment instruction, so that the screen color parameters of the display device to be tested are within the preset color range.

[0008] In an optional manner, an automatic white balance adjustment device is used to be set next to the first position of the track, and the automatic white balance adjustment device is used to sequentially adjust the white balance of multiple display devices to be tested. When the current display device to be tested among the multiple display devices to be tested moves from the head end of the track to the first position, the white balance adjustment is performed on the current display device to be tested.

[0009] In an optional manner, the automatic white balance adjustment device also includes a position sensor and an IO card; the position sensor is electrically connected to the first expansion interface of the IO card, and is used to generate a detection signal when it detects that the current display device to be tested is located at a first position, and send the detection signal to the IO card; the IO card is plugged into an industrial computer, and is used to process the detection signal into a standardized signal after receiving the detection signal, and send the standardized signal to the industrial computer; the industrial computer is used to control the color analyzer to obtain screen color parameters after receiving the standardized signal.

[0010] In an optional manner, the signal generator is used to connect to the first interface of multiple signal input interfaces of the current display device to be tested; the industrial computer is also used to generate an interface instruction after receiving the standardized signal, and send the interface instruction to the remote control; the remote control is also used to control the current display device to be tested to set the signal input source to the first interface according to the interface instruction after receiving the interface instruction, so that the current display device to be tested receives the test image signal and displays the test image according to the test image signal.

[0011] In an optional manner, the white balance automatic adjustment device also includes a first signal line, a docking male end, a second signal line and a docking female end; one end of the first signal line is used to be electrically connected to the first interface of the current display device to be tested, and the other end of the first signal line is fixed to the docking male end; one end of the second signal line is electrically connected to the signal generator, and the other end of the second signal line is fixed to the docking female end; the industrial computer is electrically connected to the docking female end, and is also used to control the docking female end to move to the first position to dock with the docking male end after receiving the standardized signal, so that one end of the first signal line fixed to the docking male end is electrically connected to one end of the second signal line fixed to the docking female end.

[0012] In an optional manner, the automatic white balance adjustment device also includes a mobile platform, and the color analyzer is fixed on the mobile platform; the industrial computer is also used to generate a first movement instruction after receiving the standardized signal, and send the first movement instruction to the IO card; the second expansion interface of the IO card is electrically connected to the mobile platform, and is used to transmit the first movement instruction to the mobile platform after receiving the first movement instruction; the mobile platform is used to move to the first position after receiving the first movement instruction, so as to drive the color analyzer to move from the second position to the screen of the current display device to be tested.

[0013] In an optional manner, the industrial computer is also used to generate a second movement instruction after completing the white balance parameter adjustment of the current display device to be tested, and send the second movement instruction to the IO card; the IO card is also used to send the second movement instruction to the mobile platform; the mobile platform is also used to move to the second position after receiving the second movement instruction to drive the color analyzer away from the first position.

[0014] In an optional manner, the PID controller is also used to generate a stop adjustment signal after completing the white balance parameter adjustment of the current display device to be tested; the industrial computer is also used to generate a stop adjustment instruction and a second movement instruction after reading the stop adjustment signal generated by the PID controller, and send the stop adjustment instruction to the color analyzer; the color analyzer is also used to stop obtaining the screen color parameters after receiving the stop adjustment instruction.

[0015] In an optional manner, the automatic white balance adjustment device also includes an alarm unit; the industrial computer is also used to start timing after receiving the standardized signal; the industrial computer is electrically connected to the alarm unit, and is used to control the alarm unit to sound an alarm when the timing time exceeds the preset time and the stop adjustment signal is not read.

[0016] According to another aspect of an embodiment of the present application, a white balance automatic adjustment system is provided, the system comprising an automatic white balance adjustment device as described above, multiple display devices to be tested, and a track, the automatic white balance adjustment device being arranged beside a first position on the track, the automatic white balance adjustment device being used to sequentially perform white balance adjustment on the multiple display devices to be tested, and the automatic white balance adjustment device performing white balance adjustment on the current display device to be tested when the current display device to be tested among the multiple display devices to be tested moves from the head end of the track to the first position.

[0017] In the embodiment of the present application, the screen color parameters of the display device to be tested are obtained by a color analyzer and sent to an industrial computer. The PID controller of the industrial computer determines the white balance correction parameters corresponding to the screen color parameters. The industrial computer generates an adjustment instruction based on the white balance correction parameters and sends the adjustment instruction to the remote control. The remote control automatically adjusts the screen color parameters of the display device to be tested based on the adjustment instruction, which can simplify the operation process of white balance adjustment, so that the entire white balance adjustment process has a high degree of automation and requires less manual participation, thereby reducing the time consumption of a single white balance adjustment. By determining the white balance correction parameters through the PID controller, the number of adjustments required for white balance adjustment of a display device can be greatly reduced, thereby reducing the time consumption.

[0018] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0020] Figure 1 A schematic diagram of the structure of a white balance automatic adjustment device provided in an embodiment of the present application is shown;

[0021] Figure 2 A schematic diagram of the structure of the automatic white balance adjustment system provided in an embodiment of the present application is shown;

[0022] Figure 3 A schematic diagram of the structure of an automatic white balance adjustment device provided by another embodiment of the present application is shown;

[0023] Figure 4 A diagram showing a connection relationship between a signal generator provided in an embodiment of the present application and a display device to be tested;

[0024] Figure 5 A schematic diagram of a scenario in which a docking female end and a docking male end provided in an embodiment of the present application are docked is shown.

[0025] The reference numerals in the specific implementation manner are as follows:

[0026] 10. Automatic white balance adjustment system;

[0027] 100. Automatic white balance adjustment device;

[0028] 110, industrial computer; 111, PID controller; 120, signal generator; 130, color analyzer; 140, remote control; 150, position sensor; 160, IO card; 161, first expansion interface; 162, second expansion interface; 171, first signal line; 172, docking male end; 173, second signal line; 174, docking female end; 180, mobile platform; 190, alarm unit;

[0029] 210-230, display device to be tested; 220, current display device to be tested; 221-223, multiple signal input interfaces; 222, first interface;

[0030] 300, track; 310, track head end; 320, first position. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0033] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0036] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0037] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0038] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0039] Display devices (such as televisions) reproduce colors by adjusting the brightness of the three color channels: red, green, and blue. The purpose of white balance calibration is to adjust the brightness of these three color channels so that when the display device displays white, it can accurately display the standard white image without any color deviation.

[0040] Completing the white balance calibration of the display device includes two processes: creating the adjustment environment and before and after the white balance adjustment.

[0041] The process of creating an adjustment environment includes placing the turned-on display device to the adjustment position, connecting the signal line of the signal generator to the signal input interface of the display device, and remotely controlling the display device to the corresponding signal input interface so that the signal source of the display device is the signal generator, thereby allowing the display device to receive the test image signal of the signal generator and display the test image.

[0042] After creating the adjustment environment, multiple white balance adjustment processes are performed. Each white balance adjustment process includes: the staff obtains the screen color parameters through a color analyzer, determines the white balance correction parameters of the display device based on experience, and uses a remote control to adjust the screen color parameters of the display device based on the white balance correction parameters, so that the display device presents standard white; or, the staff directly compares the standard white with the white presented by the display device, determines the white balance correction parameters of the display device based on the difference perceived by the naked eye, and uses a remote control to adjust the screen color parameters of the display device based on the white balance correction parameters, so that the display device presents standard white.

[0043] However, when determining the white balance correction parameters, the staff can only rely on experience and perception, and cannot find a good adjustment strategy. Therefore, the staff needs to perform the white balance adjustment process repeatedly to complete the white balance adjustment of a display device.

[0044] Based on this, the inventor of the present application found that a PID controller can be used for white balance adjustment, that is, after obtaining the screen color parameters through a color analyzer, the staff inputs the screen color parameters into the PID controller, and the PID controller determines the white balance correction parameters corresponding to the screen color parameters based on the stored preset color range and its own automatic control algorithm, and the staff then uses a remote control to adjust the screen color parameters of the display device based on the white balance correction parameters determined by the PID controller. Since the PID controller has three control functions, namely proportional, integral and differential, the proportional control action immediately responds to the current error, the integral control action accumulates historical errors, and the differential control action predicts based on the rate of change of the error. Therefore, using a PID controller for white balance adjustment can significantly reduce the number of adjustments required for white balance adjustment of a display device, thereby reducing the time required.

[0045] Furthermore, the degree of automation of each white balance adjustment process can be improved to reduce the time consumption of a single white balance adjustment, simplify the adjustment process, and thus meet the needs of industrial production. Specifically, after the staff member holds a color analyzer to obtain the screen color parameters, the color analyzer is connected to the industrial computer, so that the screen color parameters are sent to the PID controller of the industrial computer, and the PID controller determines the white balance correction parameters of the display device. The industrial computer generates an adjustment instruction for the remote control based on the white balance correction parameters, and the industrial computer is connected to the remote control, so that the adjustment instruction is sent to the remote control, and the remote control automatically adjusts the screen color parameters of the display device based on the adjustment instruction. Therefore, in the improved white balance adjustment process of the above-mentioned display device, the staff member only needs to hold the color analyzer to obtain the screen color parameters of the display device, thereby simplifying the operation process of the white balance adjustment and reducing the time consumption of a single white balance adjustment.

[0046] The present application is applicable to white balance adjustment of a display device, wherein the display device is a television, a liquid crystal display, an organic light emitting diode (OLED) display, a plasma display or any other electronic display device requiring precise color display.

[0047] Specifically, see Figure 1 , Figure 1 FIG. 4 shows a schematic diagram of the structure of the automatic white balance adjustment device provided in an embodiment of the present application. Figure 1 As shown, the automatic white balance adjustment device 100 includes: an industrial computer 110 , a signal generator 120 , a color analyzer 130 and a remote controller 140 .

[0048] The industrial computer 110 may be an industrial-grade computer equipped with a Windows or Linux operating system.

[0049] The signal generator 120 is a device that can provide electrical signals of various frequencies, waveforms and output levels, and is used as a test signal source or excitation source when measuring the amplitude characteristics, frequency characteristics, transmission characteristics and other electrical parameters of various telecommunication systems or telecommunication equipment, as well as when measuring the characteristics and parameters of components.

[0050] The color analyzer 130 is an instrument that uses photoelectric sensors and electronic computing systems to perform color calibration. Depending on the photosensitive body used, it can be divided into cadmium sulfide photosensitive body color analyzer, conductive color transfer multiplication analyzer, silicon sensor analyzer, etc. The color analyzer 130 in the embodiment of the present application includes green, red, and blue primary color photoelectric sensors.

[0051] The remote controller 140 is an industrial remote controller, which is a device that uses radio transmission to perform long-distance operation control or remote control of industrial machinery. The industrial remote controller is a transmitting device made of a wireless transmitting circuit board to control the operation of the industrial machinery.

[0052] In an optional manner, during the white balance adjustment process of the display device 220 to be tested, the staff first creates an adjustment environment, and then starts the industrial computer 110 to start the white balance adjustment.

[0053] The industrial computer 110 is electrically connected to the signal generator 120 and is used to control the signal generator 120 to generate a test image signal.

[0054] In a preferred manner, the test image signal is a signal corresponding to a standard white test image.

[0055] The signal generator 120 is used to be electrically connected to the display device 220 under test, and to send a test image signal to the display device 220 under test, so that the display device 220 under test displays a test image according to the test image signal.

[0056] The display device 220 to be tested generally includes a display interface to connect to a signal source device (e.g., a signal generator 120) to receive an image or video signal sent by the signal source device. There are many display interfaces, such as a high-definition multimedia interface (HDMI), a display port (DP), a digital visual interface (DVI), a video graphics array (VGA) interface, a USB type-C (USB Type-C, USB-C) interface, etc. Each display device 220 to be tested may include one or more of the above interfaces to be compatible with different signal source devices. In the embodiment of the present application, the signal generator 120 can access the HDMI interface of the display device 220 to be tested via a signal line.

[0057] In a preferred manner, the test image is a standard white image.

[0058] Among them, the industrial computer 110 is also electrically connected to the color analyzer 130, and is used to control the color analyzer 130 to obtain the screen color parameters of the display device 220 under test when the display device 220 under test displays the test image; the color analyzer 130 is also used to send the screen color parameters to the industrial computer 110 after obtaining the screen color parameters.

[0059] In an optional manner, the color analyzer 130 obtains the screen color parameters of the display device 220 to be tested in a dark room, and when using the color analyzer 130, the staff needs to place the color analyzer 130 close to the display screen of the display device 220 to be tested, so that the screen color parameters obtained by the industrial computer 110 are consistent with the screen color parameters displayed by the display device 220 to be tested, thereby improving the accuracy of the screen color parameters obtained by the color analyzer 130. The staff needs to place the color analyzer 130 close to the display screen of the display device 220 to be tested. If the color analyzer 130 is not close to the display screen, the screen color parameters obtained by the industrial computer 110 may be inconsistent with the screen color parameters of the display device 220, resulting in a poor white balance adjustment effect, thereby increasing the number of white balance adjustments required for the display device 220 to be tested. Therefore, taking into account the existence of the above-mentioned artificial errors, in another optional manner, the industrial computer 110 controls the color analyzer 130 to obtain the screen color parameters multiple times, and the color analyzer 130 sends the multiple screen color parameters obtained multiple times to the industrial computer 110. The PID controller 111 can determine multiple white balance correction parameters based on the multiple screen color parameters, and then determine the weighted average of the multiple white balance correction parameters as the white balance correction parameter for white balance adjustment, so as to reduce the impact of possible artificial errors.

[0060] Among them, the industrial computer 110 includes a PID controller 111, and the PID controller 111 is used to determine the white balance correction parameters according to the screen color parameters and a preset color range after receiving the screen color parameters sent by the color analyzer 130; the industrial computer 110 is also electrically connected to the remote control 140, and is used to generate an adjustment instruction according to the white balance correction parameters after reading the white balance correction parameters generated by the PID controller 111, and send the adjustment instruction to the remote control 140.

[0061] The industrial computer 110 includes a PID controller 111, that is, the industrial computer 110 has a built-in PID control algorithm; the PID (Proportional, Integral, Differential) control algorithm is a feedback control mechanism in an industrial control system, which adjusts the output of the control system through three basic control actions: proportional (P), integral (I) and differential (D) to achieve precise control of process variables (such as temperature, pressure, flow, speed, etc.). The proportional control action responds immediately to the current error and provides necessary correction; the integral control action accumulates historical errors to eliminate steady-state errors. By eliminating or reducing steady-state errors, the screen color parameters of the display device 220 to be tested do not need to be adjusted frequently after reaching the target value, thereby reducing the number of adjustments; the differential control action predicts based on the rate of change of the error, and can respond to the upcoming error in advance. This predictive control helps to reduce overshoot and oscillation, thereby reducing adjustments made due to instability of the display device 220 to be tested.

[0062] In the white balance adjustment, the PID controller 111 will try to adjust the actual screen color parameters to a preset color range. In an optional manner, the preset color range includes the setting of the intensity values ​​of the three color channels of red, green, and blue (RGB). For example, the intensity range of the red channel (R) is set to 60 to 80, the intensity range of the green channel (G) is set to between 50 and 70, and the intensity range of the blue channel (B) is set to between 40 and 60.

[0063] For example, in the screen color parameters, the actual intensity value of the R channel is 55, the actual intensity value of the G channel is 45, and the actual intensity value of the B channel is 35; the preset color parameters to be adjusted are as follows: the target intensity value of the R channel is 70, the target intensity value of the G channel is 60, and the target intensity value of the B channel is 50. First, the PID controller 111 performs proportional (P) adjustment. The PID controller 111 calculates the difference between the actual value and the target value, and then adjusts the output proportionally. If the proportional gain (Kp) is set to 2, then for the R channel, the P-adjusted output will be (70-55)*2=30; then, the PID controller 111 performs integral (I) adjustment. The integral term accumulates past errors to eliminate steady-state errors. If the error of the R channel persists, the I term will gradually increase until the error is eliminated; finally, the PID controller 111 performs differential (D) adjustment. The differential term focuses on the rate of change of the error to reduce overshoot and oscillation. If the error of the R channel changes quickly, the D term will provide a negative adjustment value to slow down the adjustment speed.

[0064] The PID controller 111 determines the white balance correction parameters based on the three control functions of proportion, integration and differentiation, so that the determination of the white balance correction parameters is based on the feedback of multiple adjustments, thereby greatly reducing the number of adjustments required for white balance adjustment of a display device 220 to be tested and shortening the time.

[0065] After the PID controller 111 determines the white balance correction parameters, the industrial computer 110 reads the white balance correction parameters and generates adjustment instructions according to the white balance correction parameters. For example, the adjustment instructions include increasing the R channel by 15, increasing the G channel by 15, and increasing the B channel by 15.

[0066] The remote controller 140 is used to communicate with the display device 220 to be tested. After receiving the adjustment instruction, the remote controller 140 is used to adjust the white balance parameters of the display device 220 to be tested according to the adjustment instruction so that the screen color parameters of the display device 220 to be tested are within a preset color range.

[0067] After acquiring the adjustment instruction from the industrial computer 110 , the remote controller 140 adjusts the white balance parameters of the display device 220 to be tested according to the adjustment instruction, so that the change of the white balance parameters of the display device 220 to be tested is consistent with the adjustment instruction.

[0068] In the embodiment of the present application, the screen color parameters of the display device 220 to be tested are obtained by the color analyzer 130 and sent to the industrial computer 110. The PID controller 111 of the industrial computer 110 determines the white balance correction parameters corresponding to the screen color parameters. The industrial computer 110 generates an adjustment instruction based on the white balance correction parameters and sends the adjustment instruction to the remote control 140. The remote control 140 automatically adjusts the screen color parameters of the display device 220 to be tested based on the adjustment instruction, which can simplify the operation process of white balance adjustment, so that the entire white balance adjustment process has a high degree of automation and requires less manual participation, thereby reducing the time consumption of a single white balance adjustment. By determining the white balance correction parameters by the PID controller 111, the number of adjustments required for white balance adjustment of a display device 220 to be tested can be greatly reduced, thereby reducing the time consumption.

[0069] When one automatic white balance adjustment device 100 is used to perform white balance adjustment on multiple display devices to be tested, in order to improve the efficiency of white balance adjustment, according to another aspect of an embodiment of the present application, an automatic white balance adjustment system is provided. Figure 2 FIG. 4 shows a schematic diagram of the structure of the automatic white balance adjustment system provided in an embodiment of the present application. Figure 2As shown, the automatic white balance adjustment system 10 includes the automatic white balance adjustment device 100 as described in any embodiment, multiple display devices to be tested 210-230 and a track 300. The automatic white balance adjustment device 100 is arranged beside the first position 320 on the track 300. The automatic white balance adjustment device 100 is used to sequentially adjust the white balance of the multiple display devices to be tested 210-230. When the current display device to be tested 220 among the multiple display devices to be tested 210-230 moves from the track head end 310 to the first position 320, the automatic white balance adjustment device 100 performs white balance adjustment on the current display device to be tested 220.

[0070] like Figure 2 As shown, the automatic white balance adjustment device 100 is disposed beside the first position 320 of the track 300 and does not hinder the passage of the display device 220 to be tested on the track 300 .

[0071] If the display device 220 to be tested is the current display device to be tested, the current display device 220 to be tested is transported to the track head end 310, and the track 300 may be provided with a transmission mechanism for transporting the display device 220 to be tested from the track head end 310 to the first position 320 of the track 300; of course, the current display device 220 to be tested may also be manually transported from the track head end 310 to the first position 320 of the track 300 by a staff. After the display device 220 to be tested completes the white balance adjustment, the display device 220 to be tested is transported away from the track 300, and the staff transports the next display device 230 to be tested to the track head end 310, moves the display device 230 to be tested from the track head end 310 to the first position 320 of the track 300, and uses the automatic white balance adjustment device 100 to perform white balance adjustment on the display device 230 to be tested.

[0072] In an optional manner, a tooling board may be used to carry the current display device 220 to be tested, so as to improve the smoothness of the transmission of the current display device 220 to be tested on the track 300 .

[0073] In the embodiment of the present application, the automatic white balance adjustment device 100 is arranged beside the first position 320 of the track 300, so that the track 300 is used as a working platform for the staff. The staff only needs to place the current display device 220 to be tested at the first end 310 of the track, and there is no need for the staff to place the current display device 220 to be tested at the first position 320. This standardizes the white balance adjustment process between the multiple display devices 210 to 230 to be tested, improves the efficiency of white balance adjustment for the multiple display devices to be tested, and adapts to a large number of white balance adjustment modes.

[0074] In order to reduce the time consumption of white balance adjustment for multiple display devices 210 - 230 to be tested, the automation level of the white balance calibration process of the current display device 220 to be tested can be further improved.

[0075] Specifically, Figure 3 FIG. 1 is a schematic diagram showing the structure of a white balance automatic adjustment device provided by another embodiment of the present application. Figure 3 The automatic white balance adjustment device 100 also includes a position sensor 150 and an IO (Input / Output) card 160; the position sensor 150 is electrically connected to a first expansion interface 161 of the IO card 160, and is used to generate a detection signal when it is detected that the current display device 220 to be tested is located at the first position 320, and send the detection signal to the IO card 160; the IO card 160 is plugged into the industrial computer 110, and is used to process the detection signal into a standardized signal after receiving the detection signal, and send the standardized signal to the industrial computer 110; the industrial computer 110 is used to control the color analyzer 130 to obtain screen color parameters after receiving the standardized signal.

[0076] When the automatic white balance adjustment device 100 is used to sequentially adjust the white balance of multiple display devices 210 to 230 to be tested, each time the current display device 220 to be tested reaches the first position 320 of the track 300 , the staff must turn on the industrial computer 110 to start white balance adjustment of the current display device 220 to be tested.

[0077] Therefore, a position sensor 150 can be set in the automatic white balance adjustment device 100. When the position sensor 150 detects that the current display device 220 to be tested is located at the first position 320, a detection signal is generated, and the detection signal triggers the industrial computer 110 to perform white balance adjustment. That is, the industrial computer 110 controls the color analyzer 130 to obtain screen color parameters in response to the detection signal.

[0078] Among them, the position sensor 150 cannot be directly electrically connected to the industrial computer 110. Therefore, the position sensor 150 and the industrial computer 110 are transferred through the IO card 160, that is, the IO card is plugged into the industrial computer 110, and the first expansion interface 161 of the IO card is electrically connected to the position sensor 150, so that the position sensor 150 and the industrial computer 110 can communicate.

[0079] Specifically, the IO card 160 is plugged into the industrial computer 110 , and its task is to perform standardized conversion of the signal after receiving the detection signal. This conversion process includes the following steps: the IO card 160 receives the detection signal of the position sensor 150, which may have various level, voltage and current characteristics. Therefore, the IO card 160 needs to adjust the signal level and voltage to ensure that it is compatible with the I / O port of the industrial computer 110 and meets the electrical standards of the standardized signal; if necessary, if the detection signal of the position sensor 150 is an analog signal, the IO card 160 converts the analog signal into a digital signal to meet the computer's processing requirements for digital signals and ensure that the signal format meets the requirements of the standardized signal; the IO card 160 also needs to electrically isolate the signal to prevent the electrical interference or voltage surge of the position sensor 150 from damaging the industrial computer 110 while maintaining the integrity of the signal; the IO card 160 converts and formats the data, such as converting serial data into parallel data, or converting data of different protocols into a standard communication protocol that the industrial computer 110 can recognize, to ensure that the signal meets the transmission rules of the standardized signal; finally, the IO card 160 sends the converted standardized signal to the industrial computer 110, so that the industrial computer 110 starts the white balance adjustment process in response to the standardized signal.

[0080] In the embodiment of the present application, the position sensor 150 generates a detection signal after detecting that the current display device 220 to be tested has reached the first position 320, and the detection signal triggers the industrial computer 110 to start the white balance adjustment process, so that the position sensor 150 replaces the manual start of the industrial computer 110, thereby improving the automation level of the white balance calibration process of the current display device 220 to be tested, reducing the time spent on white balance adjustment of multiple display devices 210 to 230 to be tested, and adapting to the white balance adjustment of batch display devices to be tested.

[0081] The process of the staff creating and adjusting the environment still includes remotely controlling the current display device 220 to be tested to the corresponding signal input interface so that the signal source of the current display device 220 to be tested is the signal generator 120, so that the current display device 220 to be tested can receive the test image signal of the signal generator 120 to display the test image.

[0082] To automate the above process, Figure 4 FIG. 1 shows a connection diagram of a signal generator and a display device to be tested provided in an embodiment of the present application. Figure 4The signal generator 120 is used to connect to the first interface 222 of the multiple signal input interfaces 221-223 of the current display device 220 to be tested; the industrial computer 110 is also used to generate an interface instruction after receiving the standardized signal, and send the interface instruction to the remote control 140; the remote control 140 is also used to control the current display device 220 to set the signal input source to the first interface 222 according to the interface instruction after receiving the interface instruction, so that the current display device 220 to be tested receives the test image signal and displays the test image according to the test image signal.

[0083] As mentioned above, the signal generator 120 can be connected to the HDMI interface of the display device 220 to be tested via a signal line. One end of the signal line is fixed to the signal generator 120. When the display device 220 to be tested is located at the first position 320, the staff plugs the other end of the signal line into the first interface 222 (such as the HDMI interface) of the display device 220 to be tested, so as to electrically connect the signal generator 120 to the first interface 222 of the display device 220 to be tested via the signal line.

[0084] In order to enable the current display device 220 to display the test image according to the test image signal after receiving the test image signal, it is also necessary to set the signal input source to the first interface 222 corresponding to the signal generator 120. Therefore, after receiving the standardized signal, the industrial computer 110 will not only control the color analyzer 130 to obtain the screen color parameters, but also generate an interface instruction and send the interface instruction to the remote controller 140. After receiving the interface instruction, the remote controller 140 controls the current display device 220 to set the signal input source to the first interface 222 according to the interface instruction, so that the current display device 220 receives the test image signal and displays the test image according to the test image signal.

[0085] In the embodiment of the present application, the industrial computer 110 generates an interface instruction in response to a standardized signal indicating that the current display device 220 to be tested is located at the first position 320, and the remote controller 140 remotely controls the current display device 220 to be tested according to the interface instruction, so that the signal input source of the current display device 220 to be tested is the first interface 222, thereby improving the automation level of the white balance calibration process of the current display device 220 to be tested and reducing the time consumption of white balance adjustment of multiple display devices 210 to 230 to be tested.

[0086] The process of the staff creating the adjustment environment still includes plugging the other end of the signal line of the signal generator 120 into the first interface 222 (such as an HDMI interface) of the current display device 220 to connect the signal generator 120 and the current display device 220. Since the signal generator 120 is located next to the first position 320, the staff needs to stand next to the first position 320 and wait for the current display device 220 to move to the first position 320 before connecting the signal line of the signal generator 120 to the current display device 220. That is, the industrial computer 110 needs to wait for the staff to connect the signal generator 120 and the current display device 220 before entering the white balance adjustment process. It is also necessary to further design the timing for the industrial computer 110 to enter the white balance adjustment process, and this process is difficult to operate.

[0087] To simplify the above operation process, Figure 5 A schematic diagram of a scene in which a docking female end and a docking male end are docked is shown in an embodiment of the present application. Figure 5 The automatic white balance adjustment device 100 also includes a first signal line 171, a docking male terminal 172, a second signal line 173 and a docking female terminal 174; one end of the first signal line 171 is used to be electrically connected to the first interface 222 of the current display device 220 to be tested, and the other end of the first signal line 171 is fixed to the docking male terminal 172; one end of the second signal line 173 is electrically connected to the signal generator 120, and the other end of the second signal line 173 is fixed to the docking female terminal 174; the industrial computer 110 is electrically connected to the docking female terminal 174, and is also used to control the docking female terminal 174 to move to the first position 320 to dock with the docking male terminal 172 after receiving the standardized signal, so that one end of the first signal line 171 fixed to the docking male terminal 172 is electrically connected to one end of the second signal line 173 fixed to the docking female terminal 174.

[0088] like Figure 5 As shown, after the industrial computer 110 responds to the standardized signal characterizing that the current display device 220 to be tested is located at the first position 320, it controls the docking female end 174 to move toward the docking male end 172, so that the first signal line 171 is electrically connected to the second signal line 173 through the docking of the docking female end 174 and the docking male end 172.

[0089] In an optional manner, the docking male end 172 and the docking female end 174 are the male end and the female end of a fully automatic cable docking device. For example, the docking male end 172 and the docking female end 174 are designed with mechanical locking devices, such as spiral, snap-on or magnetic locking. Once the docking is completed, these locking devices can automatically or manually lock the two ends to ensure that there is appropriate force to maintain stable contact between the first signal line 171 and the second signal line 173, and they will not be easily separated due to external force or vibration.

[0090] In actual white balance adjustment, the staff only needs to connect the first signal line 171 fixed to the docking male terminal 172 to the current display device 220 to be tested before performing white balance adjustment on the current display device 220 to be tested. There is no need to make additional settings for the timing of the industrial computer 110 entering the white balance adjustment process, thereby simplifying the white balance adjustment process.

[0091] The process of white balance adjustment still involves the staff: a handheld color analyzer is used to obtain screen color parameters. To further improve the automation level of the white balance calibration process of the current display device 220 to be tested, please continue to refer to Figure 3 In an optional manner, the white balance automatic adjustment device 100 also includes a mobile platform 180, and the color analyzer 130 is fixed on the mobile platform 180; the industrial computer 110 is also used to generate a first movement instruction after receiving the standardized signal, and send the first movement instruction to the IO card 160; the second expansion interface 162 of the IO card 160 is electrically connected to the mobile platform 180, and is used to transmit the first movement instruction to the mobile platform 180 after receiving the first movement instruction; the mobile platform 180 is used to move to the first position 320 after receiving the first movement instruction, so as to drive the color analyzer 130 to move from the second position to the screen of the display device 220 currently under test.

[0092] When the industrial computer 110 responds to the standardized signal indicating that the current display device 220 to be tested is located at the first position 320, it controls the mobile platform 180 to move toward the first position 320 to drive the color analyzer 130 to move from the second position to the screen of the current display device 220 to be tested, so that the screen color parameters collected by the color analyzer 130 are closer to the screen color parameters of the current display device 220 to be tested.

[0093] In a preferred embodiment, the mobile platform 180 is a single-axis mobile platform to reduce the complexity of the automatic white balance adjustment device 100 .

[0094] In a preferred embodiment, the mobile platform 180 includes a position sensor. When the position sensor senses that the distance between the mobile platform and the current device under test 220 at the first position 320 is less than a preset distance, it indicates that the color analyzer 130 has been attached to the screen of the current display device under test 220, and the mobile platform 180 stops moving. Further, after receiving the standardized signal, the industrial computer 110 controls the mobile platform 180 to move to the first position 320. After the mobile platform 180 stops moving, it generates a movement stop signal and sends the movement stop signal to the industrial computer 110 through the IO card 160. After receiving the movement stop signal, the industrial computer 110 controls the color analyzer 130 to obtain the screen color parameters of the current display device under test 220.

[0095] Generally speaking, when the second position is set, the second position satisfies the following conditions: when the color analyzer 130 is located at the second position, the current display device 220 to be tested will not collide with the color analyzer 130 during the process of the display device 220 to be tested moving from the track head end 310 to the first position 320. Therefore, in an optional manner, the industrial computer 110 is further used to generate a second movement instruction after completing the white balance parameter adjustment of the current display device 220 to be tested, and send the second movement instruction to the IO card 160; the IO card 160 is further used to send the second movement instruction to the mobile platform 180; the mobile platform 180 is further used to move to the second position after receiving the second movement instruction, so as to drive the color analyzer 130 away from the first position 320.

[0096] After the white balance parameter adjustment of the current display device 220 to be tested is completed, the color analyzer 130 needs to be moved out of the track 300 to avoid the next display device 220 to be tested from colliding with the color analyzer 130 when it moves to the first position 320 .

[0097] In the embodiment of the present application, the mobile platform 180 drives the color analyzer 130 to move from the second position to the screen of the current display device 220 to be tested, which can further improve the automation level of the white balance calibration process of the current display device 220 to be tested, thereby adapting to batch white balance adjustment.

[0098] In an optional manner, the PID controller 111 is also used to generate a stop adjustment signal after completing the white balance parameter adjustment of the current display device 220 to be tested; the industrial computer 110 is also used to generate a stop adjustment instruction and a second movement instruction after reading the stop adjustment signal generated by the PID controller 111, and send the stop adjustment instruction to the color analyzer 130; the color analyzer 130 is also used to stop acquiring the screen color parameters after receiving the stop adjustment instruction.

[0099] During the white balance adjustment process of the current display device 220 to be tested, after receiving the screen color parameters sent by the color analyzer 130, the PID controller 111 determines whether the screen color parameters are within a preset range. If the screen color parameters are outside the preset range, the white balance correction parameters are determined according to the screen color parameters. Until the screen color parameters are within the preset range, the PID controller 111 generates a stop adjustment signal, indicating that the white balance adjustment of the current display device 220 to be tested is completed.

[0100] That is, in the process of creating the adjustment environment, the position sensor 150 generates a detection signal when detecting that the current display device 220 to be tested is located at the first position 320, and sends the detection signal to the IO card 160. The IO card 160 processes the detection signal into a standardized signal, and sends the standardized signal to the industrial computer 110. After receiving the standardized signal, the industrial computer 110 controls the docking female end 174 to move to the first position to dock with the docking male end 172, while generating a first movement instruction and an interface instruction, and sends the interface instruction to the remote control 140, and sends the first movement instruction to the IO card 160. The IO card 160 transmits the first movement instruction to the mobile platform 180. After receiving the first movement instruction, the mobile platform 180 moves to the first position 320 to drive the color analyzer 130 to move from the second position to the screen of the current display device 220 to be tested.

[0101] During each white balance adjustment process, the color analyzer 130 sends the acquired screen color parameters of the display device 220 to the industrial computer 110, the PID controller 111 determines the white balance correction parameters corresponding to the screen color parameters, the industrial computer 110 generates an adjustment instruction based on the white balance correction parameters, and sends the adjustment instruction to the remote control 140, the remote control 140 automatically adjusts the screen color parameters of the display device 220 to be tested based on the adjustment instruction until the PID controller 111 generates a stop adjustment signal, after the industrial computer 110 reads the stop adjustment signal, it generates a stop adjustment instruction and a second movement instruction, after receiving the second movement instruction, the mobile platform 180 moves to the second position to drive the color analyzer 130 away from the first position 320, after receiving the stop adjustment instruction, the color analyzer 130 stops acquiring the screen color parameters, so as to avoid that after the current display device 220 to be tested completes the white balance adjustment, the color analyzer 130 acquires the wrong screen color parameters in the process of moving away from the first position 320, and the current display device 220 to be tested is mistakenly continued to perform white balance adjustment.

[0102] To avoid the situation where a display device under test fails and the remaining display devices under test cannot be adjusted for white balance, please continue to refer to Figure 3 In an optional manner, the automatic white balance adjustment device 100 also includes an alarm unit 190; the industrial computer 110 is also used to start timing after receiving the standardized signal; the industrial computer 110 is electrically connected to the alarm unit 190, and is used to control the alarm unit 190 to alarm when the timing time exceeds the preset time and the stop adjustment signal is not read.

[0103] In an optional manner, the alarm unit 190 is a three-color indicator light.

[0104] The industrial computer 110 records the adjustment time of the current display device 220 to be tested. If the adjustment time exceeds the preset time, it means that the current display device 220 to be tested is very likely to be a faulty device, and further white balance adjustment will not be successful. Therefore, the industrial computer 110 further controls the alarm unit 190 to alarm to prompt the staff to move the current display device 220 to be tested away from the first position 320 and perform white balance adjustment on the next display device to be tested. The preset time can be set according to actual use needs, for example, set to 30 seconds, or set to 2 minutes.

[0105] In the embodiment of the present application, the industrial computer 110 times the adjustment time of the current display device 220 to be tested, so as to avoid the situation where the current display device 220 to be tested fails and the white balance of the failed device is adjusted for a long time, resulting in failure to adjust the white balance of the remaining display devices 210-230 to be tested.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A white balance automatic adjustment device, characterized in that: The equipment includes: an industrial computer, a signal generator, a color analyzer and a remote controller; The industrial computer is electrically connected to the signal generator and is used to control the signal generator to generate a test image signal; The signal generator is used to be electrically connected to the display device under test, and to send the test image signal to the display device under test, so that the display device under test displays a test image according to the test image signal; The industrial computer is also electrically connected to the color analyzer, and is used to control the color analyzer to obtain the screen color parameters of the display device to be tested when the display device to be tested displays a test image; The color analyzer is also used to send the screen color parameters to the industrial computer after acquiring the screen color parameters; The industrial computer includes a PID controller, and the PID controller is used to determine the white balance correction parameters according to the screen color parameters and a preset color range after receiving the screen color parameters sent by the color analyzer; The industrial computer is also electrically connected to the remote controller, and is used to generate an adjustment instruction according to the white balance correction parameter after reading the white balance correction parameter generated by the PID controller, and send the adjustment instruction to the remote controller; The remote controller is used to communicate with the display device to be tested, and after receiving the adjustment instruction, the remote controller is used to adjust the white balance parameters of the display device to be tested according to the adjustment instruction so that the screen color parameters of the display device to be tested are within the preset color range.

2. The device according to claim 1, characterized in that The device is used to be set beside the first position of the track. The device is used to adjust the white balance of multiple display devices to be tested in sequence. When the current display device to be tested among the multiple display devices to be tested moves from the head end of the track to the first position, the white balance of the current display device to be tested is adjusted.

3. The device according to claim 2, characterized in that The device also includes a position sensor and an IO card; The position sensor is electrically connected to the first expansion interface of the IO card, and is used to generate a detection signal when detecting that the current display device to be tested is located at the first position, and send the detection signal to the IO card; The IO card is plugged into the industrial computer and is used to process the detection signal into a standardized signal after receiving the detection signal, and send the standardized signal to the industrial computer; The industrial computer is used to control the color analyzer to obtain the screen color parameters after receiving the standardized signal.

4. The device according to claim 3, characterized in that The signal generator is used to connect to a first interface among a plurality of signal input interfaces of the display device to be tested; The industrial computer is also used to generate an interface instruction after receiving the standardized signal, and send the interface instruction to the remote controller; The remote controller is also used to control the current display device under test to set the signal input source to the first interface according to the interface instruction after receiving the interface instruction, so that the current display device under test receives the test image signal and displays a test image according to the test image signal.

5. The device according to claim 4, characterized in that The device also includes a first signal line, a docking male end, a second signal line and a docking female end; One end of the first signal line is used to be electrically connected to the first interface of the display device currently under test, and the other end of the first signal line is fixed to the docking male end; One end of the second signal line is electrically connected to the signal generator, and the other end of the second signal line is fixed to the docking female end; The industrial computer is electrically connected to the docking female end, and is also used to control the docking female end to move to the first position to dock with the docking male end after receiving the standardized signal, so that an end of the first signal line fixed to the docking male end is electrically connected to an end of the second signal line fixed to the docking female end.

6. The device according to claim 3, characterized in that The device also includes a mobile platform, and the color analyzer is fixed to the mobile platform; The industrial computer is further used to generate a first movement instruction after receiving the standardized signal, and send the first movement instruction to the IO card; The second expansion interface of the IO card is electrically connected to the mobile platform, and is used to transmit the first movement instruction to the mobile platform after receiving the first movement instruction; The moving platform is used to move to the first position after receiving the first moving instruction, so as to drive the color analyzer to move from the second position to the screen of the display device to be tested.

7. The device according to claim 6, characterized in that The industrial computer is further used to generate a second movement instruction after completing the white balance parameter adjustment of the current display device to be tested, and send the second movement instruction to the IO card; The IO card is further used to send the second movement instruction to the mobile platform; The mobile platform is further configured to move toward the second position after receiving the second movement instruction, so as to drive the color analyzer away from the first position.

8. The device according to claim 7, characterized in that The PID controller is also used to generate a stop adjustment signal after completing the white balance parameter adjustment of the current display device to be tested; The industrial computer is also used to generate a stop adjustment instruction and the second movement instruction after reading the stop adjustment signal generated by the PID controller, and send the stop adjustment instruction to the color analyzer; The color analyzer is further configured to stop acquiring the screen color parameters after receiving the stop adjustment instruction.

9. The device according to claim 8, characterized in that The device also includes an alarm unit; The industrial computer is also used to start timing after receiving the standardized signal; The industrial computer is electrically connected to the alarm unit, and is used to control the alarm unit to sound an alarm when the timing duration exceeds a preset duration and the stop adjustment signal is still not read.

10. A white balance automatic adjustment system, characterized in that: The system comprises the automatic white balance adjustment device as described in any one of claims 1 to 9, multiple display devices to be tested and a track, wherein the device is arranged next to a first position on the track, and is used to sequentially perform white balance adjustment on the multiple display devices to be tested, and when the current display device to be tested among the multiple display devices to be tested moves from the head end of the track to the first position, the device performs white balance adjustment on the current display device to be tested.

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