System and method for testing heat dissipation function of laser television

Abstract

The embodiment of the invention belongs to the technical field of display, and provides a test system and a test method for a heat dissipation function of a laser television, the test system comprises the laser television and a test device, the laser television comprises at least one laser, a plurality of heat dissipation fans and a display panel, and the test device comprises an upper computer and a function board. The test system comprises an upper computer and a function board. The upper computer is used for acquiring a target temperature, determining a preset resistance value according to the target temperature and sending the preset resistance value to the function board, the function board is used for sending an analog signal corresponding to the preset resistance value to the display board according to the preset resistance value, and the display board is used for acquiring a test temperature corresponding to the analog signal and sending the test temperature to the display board according to the target temperature and the test temperature. Therefore, the automatic test of the heat dissipation function of the laser television is realized, the test process is simplified, the function of an NTC resistor does not need to be simulated and realized by arranging and combining resistors, and the test efficiency is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and more specifically, to a testing system and method for the heat dissipation function of a laser TV. Background Art

[0002] Laser TVs generate heat during operation. Currently, the ambient temperature and laser temperature can be read through an external negative temperature coefficient (NTC) resistor, and the fan speed can be controlled based on the temperature to dissipate heat and prevent the laser and other devices from burning out due to excessive temperature inside the machine.

[0003] However, since the resistance value of NTC has a nonlinear region when it changes with temperature, when testing, a combination of resistors is used to simulate the NTC function, which makes the measurement process cumbersome and the test efficiency low. Summary of the invention

[0004] The embodiments of the present application provide a testing system and a testing method for the heat dissipation function of a laser TV, which can solve the problem in the related art that the testing of the heat dissipation function of a laser TV is complicated and leads to low testing efficiency.

[0005] In a first aspect, an embodiment of the present application provides a test system for the heat dissipation function of a laser TV, the test system comprising the laser TV and a test device, the laser TV comprising at least one laser, a plurality of heat dissipation fans and a display panel, the test device comprising a host computer and a function board;

[0006] The host computer is connected to the function board, and the host computer is used to obtain a target temperature, determine a preset resistance value according to the target temperature, and send the preset resistance value to the function board, wherein the preset resistance value includes a resistance value corresponding to the at least one laser and a resistance value corresponding to an ambient temperature in the laser TV;

[0007] The function board is connected to the display board, and the function board is used to send an analog signal corresponding to the preset resistance value to the display board according to the preset resistance value;

[0008] The display panel is used to obtain the test temperature corresponding to the analog signal, and determine whether the heat dissipation function fails according to the target temperature and the test temperature;

[0009] The target temperature includes a preset temperature of the at least one laser and an ambient preset temperature, and the test temperature includes a measured temperature of the at least one laser and an ambient measured temperature.

[0010] In an embodiment of the present application, in a test system for the heat dissipation function of a laser TV, the laser TV includes at least one laser, a plurality of heat dissipation fans and a display panel, the test device includes a host computer and a function panel, and the test system includes a connection between the host computer and the function panel. The host computer is used to obtain a target temperature, determine a preset resistance value according to the target temperature, and send the preset resistance value to the function panel, the function panel is used to send an analog signal corresponding to the preset resistance value to the display panel according to the preset resistance value, the display panel is used to obtain a test temperature corresponding to the analog signal, and determine whether the heat dissipation function fails according to the target temperature and the test temperature, thereby realizing automatic testing of the heat dissipation function of the laser TV, simplifying the test process, and not needing to perform resistor arrangement and combination to simulate the function of the NTC resistor, thereby improving test efficiency.

[0011] In some embodiments of the present application, the display panel is specifically used for:

[0012] Determining actual rotation speeds of the plurality of cooling fans according to the test temperature;

[0013] Whether the heat dissipation function fails is determined according to the target temperature and the actual rotation speeds of the plurality of heat dissipation fans.

[0014] In the embodiment of the present application, it is possible to determine whether the heat dissipation function meets the heat dissipation requirements by checking whether the actual rotation speed meets the expected fan rotation speed.

[0015] In some embodiments of the present application, the display panel is specifically used for:

[0016] Obtaining preset rotation speeds of multiple cooling fans corresponding to the target temperature;

[0017] Determining whether there is a cooling fan among the plurality of cooling fans whose actual rotation speed is inconsistent with a preset rotation speed;

[0018] If not, it is determined that the heat dissipation function has not failed;

[0019] If so, it is determined that the heat dissipation function fails.

[0020] In the embodiment of the present application, whether the heat dissipation function is abnormal is determined by judging whether the preset rotation speed and the actual rotation speed are consistent. If they are inconsistent, it means that the actual rotation speed may not meet the rotation speed required for heat dissipation, and the heat dissipation function is determined to be abnormal, thereby improving the detection accuracy.

[0021] In some embodiments of the present application, the host computer is specifically used for:

[0022] Acquire a mode to be tested, where the mode to be tested is an abnormal power-on and power-off mode, a low temperature mode, a low pressure mode, a random mode, or a dual laser mode;

[0023] According to the mode to be tested, a target temperature is determined.

[0024] In the embodiment of the present application, the use of the laser TV in different usage scenarios can be simulated in multiple working modes, and whether the heat dissipation function fails in each mode can be further accurately determined, thereby improving the accuracy of the judgment.

[0025] In some embodiments of the present application, the function board includes a first control component and a digital potentiometer;

[0026] The first control component is connected to the host computer and the digital potentiometer respectively, and the first control component is connected to the display panel;

[0027] The first control component is used to: receive the preset resistance value sent by the host computer, and send a digital signal to the digital potentiometer according to the preset resistance value;

[0028] The digital potentiometer is used to send the analog signal to the display panel according to the digital signal;

[0029] The display panel is specifically used to: determine the input voltage according to the analog signal, determine the test temperature by using the input voltage, and control the multiple cooling fans to rotate at the actual speed according to the test temperature.

[0030] In the embodiment of the present application, different resistance values ​​can be simulated through the first control component and digital potentiometer of the function board, etc., without the need to arrange and combine resistors to simulate the function of the NTC resistor, thereby reducing the complexity of the detection operation.

[0031] In some embodiments of the present application, the display panel is connected to the host computer;

[0032] The display panel is also used to: send the actual rotation speed and the test temperature to the host computer;

[0033] The host computer is also used to determine whether the heat dissipation function of the laser TV is abnormal according to the actual rotation speed and the test temperature, and obtain a test result.

[0034] In an embodiment of the present application, the display panel is connected back to the host computer, which can determine whether this function has failed based on the input target temperature and the test temperature (i.e., the actual temperature) read out by the display panel. It can also determine whether this function has failed based on the actual rotation speeds of multiple cooling fans.

[0035] In some embodiments of the present application, the host computer is specifically used for:

[0036] Obtaining a preset corresponding relationship, wherein the preset corresponding relationship includes a plurality of temperatures and a resistance value corresponding to each temperature;

[0037] According to the target temperature, in the preset corresponding relationship, determining the preset resistance value;

[0038] The preset corresponding relationship is determined according to a change curve of a negative temperature coefficient NTC resistor and temperature.

[0039] In an embodiment of the present application, the preset corresponding relationship determined based on the NTC resistance-temperature change curve can be used to determine the required preset resistance value according to the target temperature, so that the preset resistance value can be input into the display panel of the laser TV through the function board, thereby equivalent to different temperatures.

[0040] In some embodiments of the present application, the laser TV includes a first laser and a second laser, and the function board is further used for:

[0041] Acquire a first temperature of the first laser and a second temperature corresponding to the second laser sent by the host computer, wherein the first temperature and the second temperature are different;

[0042] If the laser TV triggers the error reporting mechanism, it is determined that there is no abnormality in the error reporting mechanism;

[0043] If the laser TV does not trigger the error reporting mechanism, it is determined that the error reporting mechanism is abnormal.

[0044] In the embodiment of the present application, for the dual laser mode, the temperatures of the two lasers can be manually set to be different to test whether the laser TV reports an error, without testing whether the error reporting mechanism is normal, thereby avoiding damage to the laser due to an abnormal error reporting mechanism, affecting the normal light output of the device.

[0045] In a second aspect, the present application provides a method for testing the heat dissipation function of a laser TV, wherein the laser TV includes at least one laser, and the method includes:

[0046] Get the target temperature;

[0047] Determine a preset resistance value according to the target temperature, wherein the preset resistance value includes a resistance value corresponding to the at least one laser and a resistance value corresponding to an ambient temperature in the laser TV;

[0048] Obtaining a test temperature corresponding to the preset resistance value;

[0049] Determining whether the heat dissipation function fails according to the target temperature and the test temperature;

[0050] The target temperature includes a preset temperature of the at least one laser and an ambient preset temperature, and the test temperature includes a measured temperature of the at least one laser and an ambient measured temperature.

[0051] In an embodiment of the present application, by obtaining the target temperature, determining the preset resistance value according to the target temperature, obtaining the test temperature corresponding to the preset resistance value, and determining whether the heat dissipation function fails according to the target temperature and the test temperature, automatic testing of the heat dissipation function of the laser TV is achieved, the testing process is simplified, and there is no need to arrange and combine resistors to simulate the function of the NTC resistor, thereby improving testing efficiency.

[0052] In a third aspect, the present application provides a test system for the heat dissipation function of a laser TV, the test system comprising the laser TV and a test device, the laser TV comprising at least one laser, a plurality of heat dissipation fans and a display panel, the test device comprising a host computer and a function board;

[0053] The host computer is used to obtain a target temperature, determine a preset resistance value according to the target temperature, and send the preset resistance value to the function board, wherein the preset resistance value includes a resistance value corresponding to the at least one laser and a resistance value corresponding to the ambient temperature in the laser TV;

[0054] The function board is used to send an analog signal corresponding to the preset resistance value to the display board according to the preset resistance value;

[0055] The display panel is used to obtain the test temperature corresponding to the analog signal, and determine whether the heat dissipation function fails according to the target temperature and the test temperature;

[0056] The target temperature includes a preset temperature of the at least one laser and an ambient preset temperature, and the test temperature includes a measured temperature of the at least one laser and an ambient measured temperature.

[0057] The beneficial effects of the testing system for the heat dissipation function of the laser TV provided in the embodiment of the present application are similar to those of the first aspect and will not be described in detail here.

[0058] In a fourth aspect, the present application provides a computer-readable storage medium having computer-executable instructions stored thereon. When the computer-executable instructions are executed by a processor, the method described in the second aspect is implemented.

[0059] The computer-readable storage medium provided in the embodiment of the present application can execute the technical solution in the above method embodiment, and its beneficial effects are similar, which will not be repeated here.

[0060] In a fifth aspect, the present application provides a computer program product, including a computer program, which implements the method described in the second aspect when executed by a processor.

[0061] The computer program product provided in the embodiment of the present application can execute the technical solution in the above method embodiment, and its beneficial effects are similar, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0063] Figure 1 A schematic diagram of an application scenario applicable to an embodiment of the present application;

[0064] Figure 2 A schematic diagram of the structure of a test system for the heat dissipation function of a laser TV provided in an embodiment of the present application;

[0065] Figure 3 A schematic diagram of the structure of a function board 1022 provided in an embodiment of the present application;

[0066] Figure 4 A schematic diagram of the structure of another functional board 1022 provided in an embodiment of the present application;

[0067] Figure 5 A schematic diagram of a test interface provided in an embodiment of the present application;

[0068] Figure 6 A schematic diagram of a curve of NTC resistance and temperature variation as exemplified in an embodiment of the present application;

[0069] Figure 7 A schematic flow chart of a method for testing the heat dissipation function of a laser TV provided in an embodiment of the present application;

[0070] Figure 8 A schematic flow chart of another method for testing the heat dissipation function of a laser TV provided in an embodiment of the present application;

[0071] Fig. 9 A schematic flow chart of another method for testing the heat dissipation function of a laser TV provided in an embodiment of the present application;

[0072] Fig.10 A schematic diagram of the structure of a laser television provided in this application. DETAILED DESCRIPTION

[0073] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0074] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0075] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components explicitly listed but may include other components not explicitly listed or inherent to such products or devices.

[0076] The heat dissipation function of the laser TV plays an important role in the protection of the laser. Before the laser TV leaves the factory, the heat dissipation function of the laser TV needs to be tested to ensure that the heat dissipation function is qualified, that is, there is no abnormality, so as to avoid damage to the laser due to high temperature and affect the normal light output of the equipment.

[0077] In one possible implementation, the ambient temperature and laser temperature of the laser TV can be read by an external NTC resistor. Specifically, resistors of different values ​​can be manually arranged and connected to the position of the NTC resistor to simulate the equivalent resistance value of the NTC resistor at different temperatures. The resistance is then divided by a variable voltage and input into an analog to digital converter (ADC). The temperature and resistance value at this time can then be determined by looking up a table to see whether they correspond.

[0078] Laser TV receives the voltage value divided by the NTC resistance value at the detection part. Since the resistance value of NTC has a nonlinear region when it changes with temperature, it is cumbersome to use resistance combinations to simulate the NTC function during testing, which makes the measurement process cumbersome, the test efficiency is low, and the test is not unified. The data obtained by the above method is not comprehensive.

[0079] Therefore, the present application provides a test system for the heat dissipation function of a laser TV. Based on the corresponding relationship between NTC resistance and temperature, the target temperature to be tested of the laser of the laser TV and the internal environment is determined through a test device in the test system, and a corresponding resistance value is simulated according to the target temperature to provide the resistance value to the display panel of the laser TV, so that the display panel can detect the actual temperature of the laser of the laser TV and the internal environment based on the resistance value, so as to determine whether the heat dissipation function of the laser TV is abnormal through the target temperature and the actual temperature, thereby realizing automatic testing of the heat dissipation function of the laser TV, simplifying the testing process, eliminating the need to perform resistor arrangements and combinations to simulate the function of the NTC resistor, and improving testing efficiency.

[0080] Below, for ease of understanding, Figure 1 The application scenarios to which the embodiments of the present application are applicable are described.

[0081] For example, Figure 1 A schematic diagram of an application scenario applicable to the embodiment of the present application is shown in FIG. Figure 1 As shown, it includes a laser TV 101 and a testing device 102.

[0082] Among them, the testing device 102 includes a function board and a host computer. The display panel of the laser TV 101 (not shown in the figure) is respectively connected to the function board and the host computer of the testing device 102. The target temperature can be obtained through the host computer, and the preset resistance value is determined according to the target temperature. Then, the preset resistance value is sent to the function board, so that the function board can simulate a corresponding analog signal according to the preset resistance value, and transmit the analog signal to the display panel of the laser TV 101. The display panel of the laser TV 101 can obtain the test temperature according to the analog signal, and determine whether the heat dissipation function of the laser TV 101 fails according to the test temperature and the target temperature.

[0083] In the embodiment of the present application, the host computer in the test device 102 may be, for example, a computer that can directly issue control commands, such as a desktop computer, a laptop computer, etc.

[0084] It is understood that the present application does not limit the form and type of the upper computer in the laser TV 101 and the testing device 102. Figure 1 These are examples only.

[0085] The technical solution of the present application is described in detail below in conjunction with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0086] Figure 2 A schematic diagram of a system for testing the heat dissipation function of a laser TV provided in an embodiment of the present application is shown in FIG. Figure 2As shown, the test system 10 includes a laser TV 101 and a test device 102. The laser TV 101 includes at least one laser (not shown in the figure), multiple cooling fans 1012 and a display panel 1013. The test device 102 includes a host computer 1021 and a function board 1022.

[0087] Among them, the host computer 1021 is connected to the function board 1022, and the host computer 1021 is used to: obtain the target temperature, determine the preset resistance value according to the target temperature, and send the preset resistance value to the function board 1022, the preset resistance value includes the resistance value corresponding to at least one laser and the resistance value corresponding to the ambient temperature in the laser TV 101.

[0088] The function board 1022 is connected to the display board 1013 , and the function board 1022 is used to send an analog signal corresponding to a preset resistance value to the display board 1013 according to the preset resistance value.

[0089] The display panel 1013 is used to obtain the test temperature corresponding to the analog signal, and determine whether the heat dissipation function fails according to the target temperature and the test temperature.

[0090] The target temperature includes a preset temperature of at least one laser and a preset environment temperature, and the test temperature includes a measured temperature of at least one laser and a measured environment temperature.

[0091] The preset temperature can be understood as the ideal temperature, and the test temperature is the actual temperature.

[0092] Exemplarily, the display panel 1013 may determine whether the heat dissipation function fails in the following manner:

[0093] Method 1

[0094] In a possible implementation, the display panel 1013 can compare the target temperature and the test temperature to see whether they are consistent, so as to determine whether the heat dissipation function of the laser TV 101 fails.

[0095] Specifically, the preset temperature of each laser can be compared with the measured temperature, and the ambient preset temperature can be compared with the ambient measured temperature. If the preset temperatures of multiple lasers are consistent with the measured temperatures, and the ambient preset temperature is consistent with the ambient measured temperature, it can be determined that the heat dissipation function of the laser TV 101 is not faulty. Conversely, if the preset temperature of any one of the multiple lasers is inconsistent with the measured temperature, or the ambient preset temperature is inconsistent with the ambient measured temperature, it can be determined that the heat dissipation function of the laser TV 101 is faulty.

[0096] Method 2

[0097] In another possible implementation, the display panel 1013 may obtain the actual rotation speeds of multiple cooling fans at the test temperature to determine whether the cooling function fails based on the target temperature and the actual rotation speeds of the multiple cooling fans, thereby determining whether the cooling function is qualified.

[0098] It can be understood that whether the heat dissipation function fails can be determined through method 1 and / or method 2. For the "and" case, whether the heat dissipation function fails is determined by the test results of method 1 and method 2, thereby further improving the accuracy of the test. For example, if the test result of method 1 is that there is no failure and the test result of method 2 is that there is a failure, it can be determined that the heat dissipation function fails, thereby improving the accuracy of the final test result.

[0099] It should be noted that if Figure 2 As shown, there can be multiple function boards 1022, that is, the temperature of each laser and the ambient temperature correspond to different function boards. The number of function boards 1022 in the figure is only an example, that is, the laser TV 101 includes two lasers as an example.

[0100] In this embodiment, the host computer 1021 of the test device 102 is used to obtain the target temperature, determine the preset resistance value according to the target temperature, and send the preset resistance value to the function board 1022. The function board 1022 is used to send an analog signal corresponding to the preset resistance value to the display panel 1013 of the laser TV 101 according to the preset resistance value. The display panel 1013 is used to obtain the test temperature corresponding to the analog signal, and determine whether the heat dissipation function fails according to the target temperature and the test temperature, thereby realizing automatic testing of the heat dissipation function of the laser TV 101, simplifying the testing process, eliminating the need to perform resistor arrangements to simulate the function of the NTC resistor, and improving testing efficiency.

[0101] Next, a functional board 1022 provided by the present application is described in detail.

[0102] Figure 3 A schematic diagram of the structure of a function board 1022 provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the function board 1022 includes a first control component 220 and a digital potentiometer 221 . The first control component 220 is connected to the host computer 1021 and the digital potentiometer 221 respectively, and the first control component 220 is connected to the display board 1013 .

[0103] Exemplarily, the first control component 220 and the digital potentiometer 221 may be connected via an Inter-Integrated Circuit (IIC) bus.

[0104] The first control component 220 is used to receive a preset resistance value sent by the host computer 1021 , and send a digital signal to the digital potentiometer 221 according to the preset resistance value.

[0105] The digital potentiometer 221 is connected to the socket 224 , and the display panel 1013 can be connected to the socket 224 via a first connecting line. The digital potentiometer 221 is used to send an analog signal to the display panel 1013 through the socket 224 according to the digital signal.

[0106] The display panel 1013 is specifically used to determine the input voltage according to the analog signal, and determine the test temperature based on the input voltage.

[0107] Exemplarily, the first control component 220 can be a microcontroller unit (MCU), which can convert the numerical value corresponding to the preset resistance value sent by the host computer 1021 into a corresponding digital signal. The digital potentiometer 221 can be a large-range digital potentiometer. Then the digital potentiometer 221 can use the digital signal as input to output an analog signal corresponding to the preset resistance value to the display panel 1013. The analog signal can be a signal used to represent an analog quantity, and the analog quantity can be the resistance size corresponding to the preset resistance value.

[0108] Specifically, Figure 3 As shown, the socket 224 can be connected to the first resistor through a first connection line, and the display panel 1013 can be connected to the first connection line.

[0109] The display panel 1013 can be connected to the first connection line to obtain an input voltage obtained by dividing the voltage corresponding to the analog signal through the first resistor, and then the display panel 1013 determines the test temperature according to the input voltage. Taking the laser as an example, when the voltage of the laser increases, the temperature of the laser will increase. Then, the display panel 1013 can determine the test temperature of the laser lamp, that is, the actual temperature, according to the input voltage.

[0110] In this embodiment, the first control component 220 can convert the numerical value corresponding to the preset resistance value sent by the host computer 1021 into a corresponding digital signal, and then perform resistance simulation according to the digital signal through the digital potentiometer 221 to send an analog signal corresponding to the preset resistance value to the display panel 1013 of the laser TV 101. The circuit structure of the functional board 1022 is simple and easy to operate, which reduces the complexity of the test operation.

[0111] In one possible implementation, Figure 4 As shown, Figure 4This is a schematic diagram of the structure of another functional board 1022 provided in an embodiment of the present application. Based on the functional board 1022 in the above embodiment, the functional board 1022 may further include a switch selector 222 and a second resistor 223 .

[0112] The switch selector 222 is connected to the digital potentiometer 221 and the second resistor 223 respectively, and the second resistor 223 is connected to the socket 224 .

[0113] Exemplarily, there may be multiple second resistors 223 , and the number in the figure is only an example. The present application does not limit the number of second resistors 223 , and the resistance values ​​of the multiple second resistors 223 are different high-precision resistance values.

[0114] The digital potentiometer 221 can use the digital signal as input to output an analog signal corresponding to a preset resistance value to the switch selector 222. The switch selector 222 can select the corresponding second resistor 223 according to the analog signal for series combination to obtain the desired preset resistance value, thereby inputting an analog signal corresponding to a higher precision preset resistance value to the socket 224 through the second resistor 223.

[0115] Understandably, Figure 4 The resistance accuracy of the corresponding functional board 1022 simulation is higher than Figure 3 The corresponding functional board 1022 simulates the resistance accuracy.

[0116] In this embodiment, the first control component 220 can convert the numerical value corresponding to the preset resistance value sent by the host computer 1021 into a corresponding digital signal, and then the digital potentiometer 221 can use the digital signal as input to output an analog signal corresponding to the preset resistance value to the switch selector 222. The switch selector 222 can select the corresponding second resistor 223 according to the analog signal for series combination to obtain the required preset resistance value, thereby sending an analog signal corresponding to a higher precision preset resistance value to the display panel 1013 of the laser TV 101 through the socket 224. The functional board 1022 can simulate a higher precision preset resistance value, which can further improve the accuracy of the test and reduce the tediousness of the test operation.

[0117] In one possible implementation, for Figure 3 and Figure 4 The first control component 220 can select two functional boards 1022 through a switch path to control the digital signal to be input into a certain functional board 1022 for subsequent processing through the functional board 1022.

[0118] In one possible implementation, Figure 2As shown, the display panel 1013 may include a second control component, and the second control component is connected to a plurality of cooling fans. The second control component may be an MCU.

[0119] The display panel 1013 can determine the actual rotation speeds of the multiple cooling fans according to the test temperature through the second control component. After determining the actual rotation speeds of the multiple cooling fans, it is determined whether the cooling function of the laser TV 101 fails according to the actual rotation speeds of the multiple cooling fans. The second control component can control the multiple cooling fans to rotate according to the actual rotation speeds to achieve heat dissipation.

[0120] The display panel 1013 is specifically used for:

[0121] Get the actual speed of multiple cooling fans at the test temperature.

[0122] Determine whether a cooling function failure occurs based on the target temperature and the actual speeds of multiple cooling fans.

[0123] Specifically, the display panel 1013 is used for:

[0124] Obtain the preset speeds of multiple cooling fans corresponding to the target temperature. For any cooling fan, determine whether the actual speed of the cooling fan is consistent with the preset speed of the cooling fan. If none of the cooling fans has an actual speed that is inconsistent with the preset speed, it is determined that the cooling function is not faulty. If none of the cooling fans has an actual speed that is inconsistent with the preset speed, it is determined that the cooling function is faulty.

[0125] By judging whether the preset speed is consistent with the actual speed, it is determined whether the heat dissipation function is abnormal. If they are inconsistent, it means that the actual speed may not meet the speed required for heat dissipation, and the heat dissipation function is judged to be abnormal, thereby improving the detection accuracy.

[0126] like Figure 2 As shown, the display panel 1013 is connected to the host computer 1021, and specifically, they can be connected via a Universal Serial Bus (USB).

[0127] In another possible implementation, after the display panel 1013 determines the actual rotation speeds of the multiple cooling fans, it can send the actual rotation speeds and the test temperature to the host computer 1021. That is, the display panel 1013 can control the multiple cooling fans to rotate at corresponding rotation speeds according to the test temperature to achieve the purpose of heat dissipation. The display panel 1013 can obtain the actual rotation speeds of the multiple cooling fans, and then send the actual rotation speeds and the test temperature to the host computer 1021 via USB.

[0128] Correspondingly, the host computer 1021 is also used to determine whether the heat dissipation function of the laser TV is abnormal according to the actual rotation speed and the test temperature, and obtain the test result.

[0129] In a possible implementation, after the host computer 1021 determines the test result, Figure 5 As shown, the host computer 1021 is also used for:

[0130] The test interface is displayed, and the detection interface includes a selection control for the test mode, a target temperature, a test temperature, the actual speed of multiple cooling fans at the test temperature, and a test result. The test result is used to indicate whether the cooling function has failed or not.

[0131] In the test interface, in the display area corresponding to the test result, for example, "yes" or "no" can be used to indicate whether a fault occurs, or "1" or "0" can be used to indicate whether a fault occurs. It can also be indicated in other ways, and this application does not limit this.

[0132] The test mode acquired by the host computer 1021 may be input by the user in the test mode selection control in the test interface. The user may select the test mode from the test modes of the laser TV 101 shown in the selection control. The test modes include but are not limited to: abnormal power on and off mode, low temperature mode, low pressure mode, random mode and dual laser mode.

[0133] Laser TV 101 is turned on cold during normal operation, that is, the laser temperature and the ambient temperature inside the machine are both in a low temperature state. After turning on, the ambient temperature inside the machine and the laser temperature will gradually rise. This is a normal temperature increase process. The following is an explanation of the above test modes:

[0134] Abnormal power on and off mode: After the Laser TV 101 has been working for a period of time, it suddenly loses power due to some reason and is powered on again in a short time. At this time, the laser temperature has not returned to normal temperature, while the ambient temperature inside the machine has returned to normal.

[0135] Low temperature mode: The laser TV 101 is operating in a low temperature environment, at which time the laser and the ambient temperature inside the machine are both low.

[0136] Low pressure mode: When the Laser TV 101 is used at high altitudes, the air is thin and has poor fluidity. The ambient temperature does not change much, but the laser temperature rises quickly.

[0137] Random mode: In this mode, the specific scene of the laser TV 101 is not distinguished, and the temperature value can be randomly selected to measure the heat dissipation function of the laser TV 101.

[0138] Dual laser mode: for scenarios where Laser TV 101 uses two lasers to work.

[0139] In view of the usage of the above laser TV 101 in different usage scenarios, the above-mentioned modes can be used to simulate the corresponding usage scenarios. In different test modes, the temperature of the laser and the ambient temperature are different. The target temperature corresponding to each test mode can be stored in the host computer 1021, that is, the preset temperature of at least one laser in the test mode, and the preset temperature of the ambient temperature in the test mode.

[0140] In one possible implementation, the host computer 1021 can obtain the test mode in the test interface, and the user can select the test mode from multiple operating modes of the laser TV 101 in the selection control of the test mode, and then the host computer 1021 can determine the target temperature according to the test mode.

[0141] After determining the mode to be tested and the target temperature, the host computer 1021 may display the target temperature and the mode to be tested in the test interface.

[0142] The laser TV usage in different usage scenarios is simulated in multiple test modes to further accurately determine whether the heat dissipation function is abnormal in each mode, thereby improving the accuracy of the judgment.

[0143] In a possible implementation, after determining the target temperature, the host computer 1021 is specifically used to:

[0144] Obtain a preset corresponding relationship, the preset corresponding relationship includes multiple temperatures and a resistance value corresponding to each temperature, and determine the preset resistance value corresponding to the target temperature in the preset corresponding relationship according to the target temperature, wherein the preset corresponding relationship is determined based on a change curve of a negative temperature coefficient NTC resistor and temperature.

[0145] For example, the NTC resistance and temperature curve can be referred to Figure 6 .

[0146] Specifically, the target temperature includes a preset temperature of at least one laser and an environmental preset temperature. According to the preset temperature of each laser, the preset resistance value corresponding to the laser at the preset temperature can be determined in the above preset correspondence relationship, and according to the environmental preset temperature, the preset resistance value corresponding to the internal environment of the machine at the preset temperature can be determined in the above preset correspondence relationship.

[0147] Based on the preset corresponding relationship determined by the NTC resistance-temperature change curve, the required preset resistance value is determined according to the target temperature, so that an analog signal corresponding to the preset resistance value is input to the display panel 1013 of the laser TV through the function board 1022, thereby equivalent to different temperatures.

[0148] In addition, in dual laser mode, the temperatures of the two lasers are consistent during normal operation. If they are inconsistent, the laser TV will trigger an error mechanism.

[0149] In a possible implementation, the laser TV 101 uses two lasers to emit light, namely, a first laser and a second laser, and the function board 1022 is also used for:

[0150] The first temperature of the first laser and the second temperature corresponding to the second laser sent by the host computer 1021 are obtained, and the first temperature and the second temperature are different. If the laser TV triggers the error reporting mechanism, it is determined that the error reporting mechanism is normal; if the laser TV does not trigger the error reporting mechanism, it is determined that the error reporting mechanism is abnormal.

[0151] Specifically, the function board 1022 corresponding to the first laser obtains the first temperature of the first laser sent by the host computer 1021, and the function board 1022 corresponding to the second laser obtains the second temperature of the second laser sent by the host computer 1021. It can be understood that the corresponding test mode can be a random mode at this time, and the host computer 1021 can obtain the first temperature and the second temperature input by the tester from the displayed test interface.

[0152] By manually setting the temperatures of the two lasers to be different to test whether the laser TV 101 reports an error, and thus testing whether the error reporting mechanism is normal, it is possible to avoid damage to the laser due to an abnormal error reporting mechanism or color cast of the laser emitted by the laser due to high temperature, thereby ensuring that the three-color lasers of the laser all maintain normal luminous rates and the image has normal color rendering, thereby improving the quality of the image and the user's viewing experience, and extending the service life of the laser.

[0153] Since the heat dissipation function is to prevent the laser and other devices from burning out due to excessive temperature inside the machine, the laser has a protection temperature, such as 72°C (Celsius). A more precise temperature value can be set within a preset range near 70°C (e.g. 70°C-75°C) to improve test precision and thus improve test accuracy.

[0154] In one possible implementation, when the target temperature is within a preset range, the accuracy of the target temperature is a first accuracy; when the target temperature is not within the preset range, the accuracy of the target temperature is a second accuracy; the first accuracy is greater than the second accuracy, such that the accuracy of the target temperature within the preset range is higher.

[0155] Based on the above test system, Figure 7 A flow chart of a method for testing the heat dissipation function of a laser TV provided in an embodiment of the present application, the execution subject of the method may be the above-mentioned test system, such as Figure 7 As shown, the method may include the following steps:

[0156] S701. Obtain target temperature.

[0157] S702. Determine a preset resistance value according to the target temperature, where the preset resistance value includes a resistance value corresponding to at least one laser and a resistance value corresponding to the ambient temperature in the laser TV.

[0158] S703: Obtain a test temperature corresponding to a preset resistance value.

[0159] S704: Determine whether a heat dissipation function fails based on the target temperature and the test temperature.

[0160] For the specific implementation of the above steps, please refer to the above embodiments, which will not be described again here.

[0161] In this embodiment, by obtaining the target temperature, determining the preset resistance value according to the target temperature, obtaining the test temperature corresponding to the preset resistance value, and determining whether the heat dissipation function fails according to the target temperature and the test temperature, automatic testing of the heat dissipation function of the laser TV is achieved, simplifying the testing process, eliminating the need to arrange and combine resistors to simulate the function of the NTC resistor, and improving testing efficiency.

[0162] Figure 8 A flow chart of another method for testing the heat dissipation function of a laser TV provided in an embodiment of the present application, wherein the method may be executed by the above-mentioned testing system, such as Figure 8 As shown, the method may include the following steps:

[0163] S801: Obtain a mode to be tested.

[0164] S802: Determine the target temperature according to the mode to be tested.

[0165] S803: Determine a preset resistance value according to the target temperature.

[0166] The preset resistance value includes a resistance value corresponding to at least one laser and a resistance value corresponding to the ambient temperature in the laser TV.

[0167] S804: Obtain a test temperature corresponding to a preset resistance value.

[0168] S805: Determine whether the target temperature is consistent with the test temperature.

[0169] If yes, execute S806, if no, execute S807.

[0170] S806: Determine that the heat dissipation function has no faults.

[0171] S807, heat dissipation function fails.

[0172] For the specific implementation of the above steps, please refer to the above embodiments, which will not be described again here.

[0173] In this embodiment, by obtaining the test mode, determining the target temperature according to the test mode, and then determining the preset resistance value according to the target temperature, obtaining the test temperature corresponding to the preset resistance value, and judging whether the target temperature and the test temperature are consistent, it is determined whether the heat dissipation function fails, so as to simulate the usage of the laser TV in different usage scenarios under multiple test modes, and further accurately judge whether the heat dissipation function has abnormalities in each test mode, thereby improving the accuracy of the test.

[0174] Fig. 9 A flow chart of another method for testing the heat dissipation function of a laser TV provided in an embodiment of the present application, the execution subject of the method may be the above-mentioned test system, such as Fig. 9 As shown, the method may include the following steps:

[0175] S901: Obtain a mode to be tested.

[0176] S902: Determine the target temperature according to the mode to be tested.

[0177] S903: Determine a preset resistance value according to the target temperature.

[0178] The preset resistance value includes a resistance value corresponding to at least one laser and a resistance value corresponding to the ambient temperature in the laser TV.

[0179] S904: Obtain a test temperature corresponding to a preset resistance value.

[0180] S905: Determine actual rotation speeds of multiple cooling fans according to the test temperature.

[0181] S906: Obtain preset rotation speeds of multiple cooling fans corresponding to the target temperature.

[0182] S907: Determine whether there is a cooling fan among the multiple cooling fans whose actual rotation speed is inconsistent with the preset rotation speed.

[0183] If yes, execute S908, if no, execute S909.

[0184] S908: Determine that the heat dissipation function has no faults.

[0185] S909, heat dissipation function fails.

[0186] For the specific implementation of the above steps, please refer to the above embodiments, which will not be described again here.

[0187] In this embodiment, by obtaining a test mode, determining a target temperature according to the test mode, and then determining a preset resistance value according to the target temperature, obtaining a test temperature corresponding to the preset resistance value, determining actual rotation speeds of multiple cooling fans according to the test temperature, obtaining preset rotation speeds of multiple cooling fans corresponding to the target temperature, and judging whether there is a cooling fan among the multiple cooling fans whose actual rotation speed is inconsistent with the preset rotation speed to determine whether a cooling function fails, and judging whether the actual rotation speed meets the expected fan rotation speed to determine whether the cooling function meets the requirements, thereby further improving the accuracy of the test.

[0188] Fig.10 A schematic diagram of the structure of a laser TV provided for this application, the laser TV includes: a display panel 001, a power panel 002, and a TV panel 003. Among them, the power panel 002 is connected to the display panel 001 and the TV panel 003, respectively, and can be used to power the various devices or partial modules on the display panel 001 and the TV panel 003. At the same time, it can also power other functional modules in the laser TV, such as the human eye protection module, the fan, the wireless fidelity (Wireless Fidelity, WIFI) module, etc., to ensure the normal power supply of various parts of the laser TV. In some specific implementations, a laser drive circuit can also be provided on the power panel 002. Alternatively, the laser drive circuit can also be provided independently of the power panel 002.

[0189] TV board 003 is mainly used for decoding external audio and video signals.

[0190] The TV panel 003 is provided with a system on chip (SoC), which can decode data in different data formats into a normalized format, and transmit the data in the normalized format to the display panel 001 through, for example, a connector.

[0191] The video image signal output by the TV panel 003 is transmitted to the display panel 001 .

[0192] The display panel 001 may be provided with a Field Programmable Gate Array (FPGA) and an algorithm processing module FPGA, which are used to process the input video image signal, such as MEMC frequency multiplication processing, or image correction, etc. to realize the image enhancement function. The projection display control processing unit 010 is connected to the algorithm processing module FPGA to receive the processed video image processing signal data as the image data to be displayed. It should be noted that FPGA usually exists as an enhancement function module. In some low-cost solutions, this module part may not be provided, and the projection display control processing unit 010 receives the video image display signal output by the TV panel 003.

[0193] The projection display control processing unit 010 mainly includes a digital light processing chip (Digital Light Processing, DLP), and may also include a driving chip.

[0194] In the DLP control architecture, the light source part needs to cooperate with the working timing of the DLP chip and the digital micromirror device (DMD) chip. Specifically, the DLP chip outputs an image enable signal, which can also be called a primary color light enable signal, and also outputs a brightness adjustment signal, referred to as a pulse width modulation (PWM) signal. Along with the DMD chip's sequential modulation process of different primary color image components, the light source part needs to synchronously output the primary color light beams of the corresponding colors. That is, the DLP chip outputs a primary color light enable signal to notify the laser light source to enable the lighting of a certain color laser, and outputs a PWM signal to notify a certain laser in the laser light source to light up at what brightness.

[0195] In some embodiments, the projection display control processing unit 010 is used to generate a modulated driving signal for driving the light modulator 011 according to the display image signal. On the other hand, since the display of the projection image requires the synchronous coordination of the light source light beam and the light modulator, the projection display control processing unit 010 also generates a driving signal for driving the light source to emit light. The driving signal can be called an initial driving signal, including two specific driving signals: an image enable signal EN and a current PWM signal. Among them, the image enable signal EN is a timing control signal used to coordinate the timing of light output of different colors, and the current PWM signal is a square wave signal used to provide a current signal for lighting the laser.

[0196] as well as, Fig.10 The structural diagram of the laser TV shown also includes a laser driving circuit 030 for receiving an image enable signal EN and a current PWM signal output by the projection display control processing unit 010 , and specifically controlling the lighting of the laser 040 .

[0197] In some embodiments, the laser 040 may be a laser of one color or a laser of multiple colors. Usually, a corresponding laser driving circuit 030 is provided for each color of the laser.

[0198] In addition, the structural diagram of the laser TV in this example also includes a signal shaping current 020, which can be used to generate a periodic sub-signal, shape the image enable signal EN or the current PWM signal, and affect the signal waveform and period of the final output to the laser 040.

[0199] In some embodiments, the display panel 001 may further include a second control component 012, which may be an MCU. The second control component 012 may be connected to the test device 102 and a plurality of cooling fans to test whether the heat dissipation function of the laser TV fails. For details, please refer to the above embodiments and will not be repeated here.

[0200] The implementation method and technical effect of the laser TV provided in this embodiment are similar, and this embodiment will not be described in detail here.

[0201] The present application also provides a computer-readable storage medium, which may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes. Specifically, the computer-readable storage medium stores program instructions, and the program instructions are used for the test method in the above embodiment.

[0202] The present application also provides a program product, which includes an execution instruction, which is stored in a readable storage medium. At least one control module of the display device can read the execution instruction from the readable storage medium, and at least one control module executes the execution instruction so that the display device implements the test method provided by the various embodiments described above.

[0203] 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 it. 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 with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0204] For ease of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are intended to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A test system for the heat dissipation function of a laser TV, characterized in that: The test system comprises the laser TV and a test device, wherein the laser TV comprises at least one laser, a plurality of cooling fans and a display panel, and the test device comprises a host computer and a function board; The host computer is connected to the function board, and the host computer is used to obtain a target temperature, determine a preset resistance value according to the target temperature, and send the preset resistance value to the function board, wherein the preset resistance value includes a resistance value corresponding to the at least one laser and a resistance value corresponding to an ambient temperature in the laser TV; The function board is connected to the display board, and the function board is used to send an analog signal corresponding to the preset resistance value to the display board according to the preset resistance value; The display panel is used to obtain the test temperature corresponding to the analog signal, and determine whether the heat dissipation function fails according to the target temperature and the test temperature; The target temperature includes a preset temperature of the at least one laser and an ambient preset temperature, and the test temperature includes a measured temperature of the at least one laser and an ambient measured temperature.

2. The test system according to claim 1, characterized in that: The display panel is specifically used for: Determining actual rotation speeds of the plurality of cooling fans according to the test temperature; Whether the heat dissipation function fails is determined according to the target temperature and the actual rotation speeds of the plurality of heat dissipation fans.

3. The test system according to claim 2, characterized in that: The display panel is specifically used for: Obtaining preset rotation speeds of multiple cooling fans corresponding to the target temperature; Determine whether there is a cooling fan among the plurality of cooling fans whose actual rotation speed is inconsistent with a preset rotation speed; If not, it is determined that the heat dissipation function has not failed; If so, it is determined that the heat dissipation function fails.

4. The test system according to any one of claims 1 to 3, characterized in that: The host computer is specifically used for: Acquire a mode to be tested, where the mode to be tested is an abnormal power-on and power-off mode, a low temperature mode, a low pressure mode, a random mode, or a dual laser mode; According to the mode to be tested, a target temperature is determined.

5. The test system according to any one of claims 1 to 4, characterized in that: The function board includes a first control component and a digital potentiometer; The first control component is connected to the host computer and the digital potentiometer respectively, and the first control component is connected to the display panel; The first control component is used to: receive the preset resistance value sent by the host computer, and send a digital signal to the digital potentiometer according to the preset resistance value; The digital potentiometer is used to send the analog signal to the display panel according to the digital signal; The display panel is specifically used to determine the input voltage according to the analog signal, and determine the test temperature by using the input voltage.

6. The test system according to claim 5, characterized in that: The display panel is connected to the host computer; The display panel is also used to: send the actual rotation speed and the test temperature to the host computer; The host computer is also used to determine whether the heat dissipation function of the laser TV is abnormal according to the actual rotation speed and the test temperature, and obtain a test result.

7. The test system according to any one of claims 1 to 6, characterized in that: The host computer is specifically used for: Obtaining a preset corresponding relationship, wherein the preset corresponding relationship includes a plurality of temperatures and a resistance value corresponding to each temperature; According to the target temperature, in the preset corresponding relationship, determining the preset resistance value; The preset corresponding relationship is determined according to a change curve of a negative temperature coefficient NTC resistor and temperature.

8. The test system according to claim 7, characterized in that: The laser television comprises a first laser and a second laser, and the function board is further used for: Acquire a first temperature of the first laser and a second temperature corresponding to the second laser sent by the host computer, wherein the first temperature and the second temperature are different; If the laser TV triggers the error reporting mechanism, it is determined that there is no abnormality in the error reporting mechanism; If the laser TV does not trigger the error reporting mechanism, it is determined that the error reporting mechanism is abnormal.

9. A test system for the heat dissipation function of a laser TV, characterized in that: The test system comprises the laser TV and a test device, wherein the laser TV comprises at least one laser, a plurality of cooling fans and a display panel, and the test device comprises a host computer and a function board; The host computer is used to obtain a target temperature, determine a preset resistance value according to the target temperature, and send the preset resistance value to the function board, wherein the preset resistance value includes a resistance value corresponding to the at least one laser and a resistance value corresponding to the ambient temperature in the laser TV; The function board is used to send an analog signal corresponding to the preset resistance value to the display board according to the preset resistance value; The display panel is used to obtain the test temperature corresponding to the analog signal, and determine whether the heat dissipation function fails according to the target temperature and the test temperature; The target temperature includes a preset temperature of the at least one laser and an ambient preset temperature, and the test temperature includes a measured temperature of the at least one laser and an ambient measured temperature.

10. A method for testing the heat dissipation function of a laser TV, characterized in that: The laser television comprises at least one laser, and the method comprises: Get the target temperature; Determine a preset resistance value according to the target temperature, wherein the preset resistance value includes a resistance value corresponding to the at least one laser and a resistance value corresponding to an ambient temperature in the laser TV; Obtaining a test temperature corresponding to the preset resistance value; Determining whether the heat dissipation function fails according to the target temperature and the test temperature; The target temperature includes a preset temperature of the at least one laser and an ambient preset temperature, and the test temperature includes a measured temperature of the at least one laser and an ambient measured temperature.

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