A display module and control system for TN color display of rangefinder

Abstract

The present application relates to the field of color display technology, and in particular to a display module and control system for a TN screen color display of a rangefinder, which includes a liquid crystal module, characterized in that the backlight unit of the liquid crystal module adopts multiple RGB backlight units, and the multiple RGB backlight units are connected to LCD electrodes; it also includes: a polarizer, which is arranged above and below the liquid crystal module; a backlight layer, which is arranged below the polarizer to provide backlight; and a main control processor, which is arranged inside the rangefinder to control the backlight layer and the liquid crystal module to display. The present invention has the effect of reducing the cost of multi-color display of the rangefinder.

Description

Technical Field

[0001] The present application relates to the field of color display technology, and in particular to a display module and control system for a TN screen color display of a rangefinder. Background Art

[0002] Rangefinders are very important multifunctional instruments in modern technology and are also common in life. Under existing technology, all integrated and multifunctional rangefinders are equipped with display screens, and the measurement results are displayed on the display screen. Conventional rangefinders use segmented LCD screens as display elements, which can only display black and white or monochrome information and cannot adapt to different lighting environments. It is inconvenient to read in dim light.

[0003] Therefore, in order to adapt to different lighting environments and improve the display effect of the rangefinder measurement values, some existing rangefinder screens use color display, mostly TFT dot matrix color screens, which are relatively expensive and have high processing requirements for the rangefinder, and are not suitable for portable rangefinders.

[0004] With respect to the above-mentioned related technologies, the inventor believes that based on the principle of liquid crystal display, improvements can be made to the display screen of the distance measuring instrument, which can be equipped with basic multi-color display function while reducing the design cost. Summary of the invention

[0005] In order to reduce the multi-color display cost of a rangefinder, the present invention provides a display module and a control system for a TN screen color display of a rangefinder.

[0006] On the one hand, the present invention provides a rangefinder TN screen color display module adopts the following technical solution: A display module for a TN screen color display of a rangefinder, comprising a liquid crystal module, wherein a backlight unit of the liquid crystal module adopts a plurality of RGB backlight units, and the plurality of RGB backlight units are connected with LCD electrodes; Also includes: Polarizers are arranged above and below the liquid crystal module; A backlight layer, disposed below the polarizer, to provide backlight; The main control processor is arranged inside the rangefinder to control the backlight layer and the liquid crystal module to light up.

[0007] By adopting the above technical solution, the backlight module of the traditional LCD screen uses an RGB backlight unit, which has red, green and blue three-color display functions, so that each display unit of the LCD screen can select the displayed content in three colors; In one display frame of the LCD screen, the main control processor of the rangefinder refreshes the display data of the three color components of red, green and blue to the LCD screen through specific liquid crystal control lines, controls the RGB backlight unit of the corresponding color to light up, and displays the corresponding digital content in a specific color. By quickly switching the display color of the RGB backlight unit and changing different contents when switching between different display frames, a color display effect of numbers and colors can be achieved. In addition to the single red, green and blue colors, the three colors can also be mixed in a preset ratio. Blue and red are mixed into purple, and red and green are mixed into yellow.

[0008] On the one hand, the present invention provides a control system for a display module of a TN screen color display of a rangefinder, which adopts the following technical solution: A control system for a display module of a TN screen color display of a rangefinder, comprising a rangefinder circuit, the rangefinder circuit being connected to a rangefinder component of the rangefinder, characterized in that it also comprises a main control processing module, a color control module, a data recording module, and a power supply module; The main control processing module is connected to the distance measuring circuit of the rangefinder, and the distance measuring circuit sends the measurement result to the main control processing module; the main control processing module stores a pre-written color configuration file, and runs the color configuration file while receiving the result value to generate a command signal; The color control module is connected to the control circuits of the multiple RGB backlight units in the liquid crystal module, and the color control module is connected to the main control processing module, receives the command signal, and controls the corresponding RGB backlight unit to display the corresponding value and the corresponding color; The data recording module stores historical distance measurement values, the main control processing module is connected to the data recording module, and retrieves the storage information of the data recording module, and the liquid crystal module displays the retrieved result; The power module is used to control the power supply of the system.

[0009] By adopting the above technical solution, the main control processing module is the main central control module of the rangefinder. In actual application, the main control processing module adopts a single-chip microcomputer with data calculation and information processing capabilities as the main unit of the main control processing module; a color configuration file is written in the main control processing module, and the color configuration file runs synchronously with the main control processing module. When the front-end ranging circuit uploads the numerical result to the liquid crystal module, the corresponding command signal is sent to the color control module. The color control module operates according to the command signal to control each RGB backlight unit on the liquid crystal module to refresh the corresponding color; in other words, the color configuration file should run synchronously with the data transmission of the main control processing module, and when there is a numerical value displayed on the liquid crystal module of the rangefinder, the corresponding color should be configured; Furthermore, the color configuration file should include three monochrome colors and the mixing ratio of the three monochrome colors, so that the digital colors displayed on the LCD screen are not limited to these three colors, and the color display of the rangefinder is suitable for different application scenarios. When designing a cost-effective rangefinder, in order to reduce the intelligent operation channels and reduce the design cost, the color switching cycle can be set when writing the color configuration file, so that the three colors are displayed in a reciprocating cycle, and the display cycle duration is determined according to the situation.

[0010] Optionally, a backlight control module is also included; The backlight control module is connected to the backlight layer, receives the instruction signal from the main control processing module, and changes the operating state of the backlight layer.

[0011] By adopting the above technical solution, the backlight control module mainly controls the operation of the backlight layer, which is used to provide background light for the color display of the liquid crystal module, improve the color visibility, and make it easier for users to read intuitively; The backlight layer can display any color. The backlight control module specifically adjusts the real-time current of the backlight layer to adjust the specific brightness of the bright surface of the backlight layer. When the application environment is under sunlight or in a workshop with high light intensity, the backlight layer brightness is low, or the backlight layer does not need to be illuminated to reduce power consumption. When the application environment is with low light intensity, the backlight layer brightness is increased to highlight the numerical color display of the liquid crystal module. For the brightness adjustment of the backlight layer, a sliding adjustment method can be adopted. A sliding button is set on the outer side of the rangefinder housing at the position of the distance measuring personnel's thumb, so that the sliding button is specifically connected to a sliding rheostat, and the sliding rheostat is set between the power supply circuit and the backlight layer power supply circuit. The distance measuring personnel slide the button to adjust the brightness of the backlight layer. The backlight layer brightness can be set to multiple adjustment levels to facilitate the operation of the distance measurement personnel; In addition, the control of the brightness of the backlight layer can also adopt the existing technical solution of setting a light sensor. The light sensor detects the brightness of the external environment, and the light sensor sends the external brightness detection result to the main control processing module. The main control processing runs the instruction file according to the processing result, and sends instructions to the backlight control module to adjust the brightness of the backlight layer, thereby dimming the backlight layer when the light is weak to achieve energy saving, and raising the backlight layer when the light is strong to highlight the display for easy observation.

[0012] Optionally, a key input module is also included; The key input module is connected to the main control processing module, and provides a priority control channel covering the color configuration file inside the main control processing module. The main control processing module controls the display state of the backlight layer and the liquid crystal module according to the instructions of the key input module.

[0013] By adopting the above technical solution, the key input module overwrites the instant generation instructions of the color configuration file through the main control input module, so that the backlight layer and the RGB backlight unit give priority to the input instructions of the user, and the instruction execution priority of the key input module must be higher than the native instructions of the main control processing module; This is mainly reflected in the fact that the above-mentioned technicians can flexibly change the display color of the RGB backlight unit, stop the LCD module from refreshing, suspend the stop command of the main control processing module, and fix the RGB backlight unit at the same color.

[0014] Optionally, a buzzer output module is also included; The buzzer output module is connected to the main control processing module and the key input module. The key input module provides numerical comparison and setting channels, presets numerical values ​​or preset vertical intervals in the main control processing module and presets corresponding judgment criteria. When the measurement result uploaded by the ranging circuit received by the main control processing module meets the judgment criteria of the preset numerical value and preset interval, the buzzer output module makes a sound prompt.

[0015] By adopting the above technical solution, the buzzer output module is mainly used to remind the technicians of the distance measurement results, making the numerical display more intuitive. Accordingly, a buzzer can be set inside the rangefinder; The data setting channel provided by the key input module can set the distance measurement value to be greater than or less than a preset value, or set the distance measurement value to fall within a value range, and the buzzer will synchronize the data display to give a reminder. When performing multiple sets of distance measurements, technicians do not need to compare them one by one, and can obtain the value comparison results according to the prompt of the buzzer; Based on this function, the buzzer output module can work in conjunction with the color control module. When the numerical comparison result is a preset result, when the LCD module refreshes the displayed value at the initial time point of the display frame, the buzzer output module directly controls the operation of the buzzer. At the same time, the LCD module periodically changes the actual color at the preset frame interval, and cooperates with the sound of the buzzer to enhance the color prompt effect.

[0016] Optionally, a brightness control module is also included; The brightness control module is connected to the main control processing module and the liquid crystal module, receives the electrical signal from the main control processing module, and controls the liquid crystal module to change the brightness with a preset color.

[0017] By adopting the above technical solution, the brightness control module is different from the above backlight control module, receives the control instruction of the main control processing module, changes the corresponding color brightness of the RGB backlight unit, or the color brightness relative to the backlight layer, and displays the corresponding color brightness of the RGB backlight unit in a highlighted manner. Furthermore, the brightness control module is specifically integrated and arranged between the power supply circuit and the liquid crystal module power supply circuit, and specifically controls the numerical display brightness of the liquid crystal module by controlling the current size of each RGB backlight unit of the liquid crystal module.

[0018] Optionally, an automatic setting module is also included; The automatic setting module is connected to the key input module and the main control processing module. A clock instruction file is pre-stored in the automatic setting module. The module reads clock information, automatically runs the instruction file when entering a preset time period, sends a change instruction to the main control processing module, and changes the color configuration file running inside the main control processing module.

[0019] By adopting the above technical solution, the command file in the automatic setting module reads the clock information inside the rangefinder, and the technician inputs the timed operation command for changing the operation status of the color configuration file through the key input module, and the main control processing module keeps reading. When the preset time node is reached, the main control processing module changes the command generation result of the color configuration file; Specifically, the technician can set the automatic brightness adjustment time in the automatic setting module through the key input module. For example, the rangefinder LCD module or the backlight layer automatically highlights at 7 o'clock in the evening. That is, when the main control processing module receives data display, the brightness control module and the backlight control module simultaneously increase the supply current value of the LCD module, increase the backlight brightness of the backlight layer or the numerical display brightness of the LCD module.

[0020] Optionally, a wireless module is also included; The wireless module has a network connection function, a wireless network communication function, and periodically automatically accesses the downloaded color configuration file to update the instruction file inside the main control processing module; or, The wireless module has short-range wireless communication capability, approaches the control terminal and establishes a connection, downloads the color configuration file from the control terminal, and updates the instruction file inside the main control processing module.

[0021] By adopting the above technical solution, the wireless module of most intelligent rangefinders is expanded in structure and function, and the latest color configuration file of the corresponding model can be automatically downloaded online. This solution is suitable for rangefinders with high intelligence and strong operation capabilities. In actual application, it is recommended to adopt the second technical solution, and the technicians regularly connect to the control terminal through the short-distance and local area communication technologies such as Bluetooth, Lora, WIFI, etc. that most rangefinders come with, and update the color configuration file through the control terminal.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. By adopting RGB backlight unit and LCD electrode, multi-color display is realized, which significantly improves the information expression ability and visual effect of the rangefinder display. This multi-color display mode not only allows users to obtain complex measurement data more intuitively, but also maintains good readability under different ambient lighting conditions, further improving the user's operating convenience and work efficiency; 2. The buzzer output module and the color control module work together to dynamically adjust the backlight color according to the measurement results, ensuring the consistency and accuracy of the displayed content and the measurement results. This function not only enhances the user experience, but also improves the overall reliability and accuracy of the rangefinder. For example, when the measured value exceeds the preset range, the backlight color can be changed to quickly remind the user, thereby avoiding misoperation and misjudgment; 3. The system effectively reduces power consumption and extends battery life by optimizing backlight control and brightness adjustment, making it suitable for long-term outdoor use. This not only reduces the trouble of frequent battery replacement, but also reduces maintenance costs. In addition, the system is designed with cost-effectiveness in mind. By simplifying the structure and optimizing energy consumption management, the overall manufacturing cost is greatly reduced, making it more competitive in the market and conducive to large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the structural composition of the rangefinder display module in the first embodiment of the present application.

[0024] Figure 2 It is a logical control block diagram of the control system in Example 2 of the present application.

[0025] Explanation of the accompanying drawings: 1. Liquid crystal module; 11. LCD display screen; 12. Polarizer; 13. Glass plate; 14. Backlight layer; 15. Backlight plate; 2. Main control processing module; 21. Color control module; 22. Brightness control module; 23. Buzzer output module; 24. Backlight control module; 25. Data recording module; 26. Wireless module; 3. Key input module; 31. Automatic setting module; 4. Power module. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-2 This application is described in further detail. Embodiment 1

[0027] The present application embodiment discloses a display module for a TN color display of a rangefinder. Figure 1A display module of a TN screen color display of a rangefinder includes a glass plate 13, a polarizer 12, a liquid crystal module 1, another polarizer 12, a backlight layer 14 and a unit part corresponding to the control display of the main control processor arranged inside the rangefinder. The liquid crystal module 1 mainly includes an LCD display screen 11 with a TN plate as the architecture and multiple RGB backlight units integrated on the LCD display screen 11. The multiple RGB backlight units correspond to the display units of the liquid crystal module 1. When displaying values, the multiple RGB backlight units are controlled by the main control processor, and the corresponding RGB backlight units light up to display the corresponding values.

[0028] The RGB backlight unit can display values ​​in three colors: red, green, and blue. Based on the principle of liquid crystal display, the RGB backlight unit can change the display color or fix the display color to one color.

[0029] Reference Figure 1 The backlight layer 14 includes a backlight panel 15, which is arranged below the LCD display screen 11. The backlight panel 15 is used as the main backlight generation structure of the liquid crystal module 1. In this embodiment, in order to improve the cost performance of the rangefinder, the backlight layer 14 is only used to display white light and only provides a brightness adjustment function, that is, the backlight panel 15 of the rangefinder has only two states: off and on. In an environment with weak light intensity, the backlight panel 15 of the rangefinder is powered on and highlights the three-color display of the RGB backlight unit through white light.

[0030] Reference Figure 1 The polarizer 12 is a prior art, which improves display quality and contrast by controlling the polarization direction of light and reduces the nonlinear error of light. The glass plate 13 is arranged above the polarizer 12, the backlight plate 15, and the LCD display screen 11 to play a protective role. In some embodiments, the polarizer 12 and the LCD display screen 11 are integrated into one design, and the two are regarded as one body, or the polarizer 12 is regarded as a basic component of the LCD display screen 11.

[0031] The implementation principle of the display module of the TN screen color display of a rangefinder in the embodiment of the present application is: the RGB backlight unit has the red, green and blue three-color display function, which enables each display unit of the LCD screen to select the displayed content in three colors; in addition to the single red, green and blue three colors, the three colors can also be mixed to display different colors.

[0032] In a display frame of the LCD display screen 11, the main control processor of the rangefinder refreshes the display data of the three color components of red, green and blue to the LCD display screen 11 through specific liquid crystal control lines, controls the RGB backlight units of corresponding colors to light up, and displays the corresponding digital content in specific colors. By quickly switching the display color of the RGB backlight unit and changing different contents when switching between different display frames, a color display effect of numbers and colors can be achieved. Embodiment 2

[0033] The present application embodiment discloses a control system for a display module of a TN screen color display of a rangefinder, which is used to control a display module of a TN screen color display of a rangefinder in the first embodiment. Figure 2 A control system for a display module of a TN screen color display of a rangefinder includes a main control processing module 2, a color control module 21, a brightness control module 22, a backlight control module 24, a key input module 3, an automatic setting module 31, a data recording module 25, a buzzer output module 23, a wireless module 26, and a power supply module 4. The main control processing module 2 is the main central control module of the rangefinder. In actual application, the main control processing module 2 adopts a DSP chip module with data calculation and information processing capabilities, or for a rangefinder with a larger volume, a single-chip microcomputer can be directly selected as the main unit of the main control processing module 2. The ranging circuit sends the measurement result to the main control processing module 2, and the main control processing module 2 calculates and processes the result value and sends it to the liquid crystal module 1 of the first embodiment. The corresponding RGB backlight unit runs, lights up, and displays the corresponding number; a color configuration file is pre-stored in the main control processing module 2, and the color configuration file runs synchronously with the calculation instruction file of the main control processing module 2. When the front-end ranging circuit uploads the numerical result to the liquid crystal module 1, it is sent to the color control module 21 with a corresponding instruction signal. The color control module 21 operates according to the instruction signal to control each RGB backlight unit on the liquid crystal module 1 to refresh the corresponding color; in other words, the color configuration file should run synchronously with the data transmission of the main control processing module 2, and when there is a numerical display on the liquid crystal module 1 of the rangefinder, the corresponding color should be configured.

[0034] In this embodiment, the instruction running dimensions of the color configuration file include but are not limited to font, color, brightness, ratio, etc., that is, the display font, display color, display brightness, and ratio of the numerical value on the rangefinder display screen can be mixed and displayed as a new color.

[0035] Reference Figure 2The color control module 21 is connected to the control circuits of multiple RGB backlight units in the liquid crystal module 1, and a code file of the RGB color system is stored internally. The color control module 21 is specifically connected to the main control processing module 2. Under the instruction control of the main control processing module 2, the color code stored internally is called, and the corresponding color is selected according to the instruction, or all colors are selected at the same time according to the instruction, and the selected colors are output as mixed colors in proportion, and then the RGB backlight unit selected after the calculation by the main control processing module 2 is controlled to display the corresponding value while displaying the color selected by the color control module 21; in summary, the color control module 21 is mainly used to control the color retrieval in the color display.

[0036] Reference Figure 2 In addition to the above-mentioned RGB color controllable operation, the display brightness of RGB can also be controlled, which is realized by the brightness control module 22. Specifically, the brightness control module 22 is connected to the main control processing module 2 and the power supply circuit of the liquid crystal module 1, receives the electrical signal of the main control processing module 2, and controls the real-time power of the liquid crystal module 1 to change the brightness of the preset color; further, the main part of the brightness control module 22 includes an adjustable electrically controlled resistor, increasing the resistor to reduce the power supply current of the liquid crystal module 1, and weakening the display brightness of each RGB backlight unit on the liquid crystal module 1.

[0037] Reference Figure 2 , the backlight control module 24 is connected to the electric control circuit of the backlight panel 15 to control the display brightness of the backlight panel 15 in the first embodiment. The backlight control module 24 is similar to the brightness control module 22, and the main part adopts an adjustable electric control resistor. The backlight control module 24 is connected to the main control processing module 2 to receive the command signal of the main control processing module 2 to change the operation state and luminous intensity of the backlight panel 15. In this embodiment, the effect of setting the backlight layer 14 with adjustable illumination intensity is that based on different ambient illumination intensities, the backlight layer 14 adjusts the background brightness of the liquid crystal module 1, and provides a brilliance effect equivalent to ambient light under the reflected illumination of the upper glass plate 13, thereby improving the color visibility and making up for the shortcomings of weak ambient illumination intensity and difficulty in reading in a dark environment. In this embodiment, the backlight layer 14 has only one background color of white, and white can highlight any color, without the need to set other colors, removing redundant operating structures, and reducing design costs. In practical applications, it is recommended to set a sliding button on the side edge of the rangefinder at the position corresponding to the tip of the user's thumb, and use a sliding adjustment method to set a sliding button on the outside of the rangefinder shell at the position of the rangefinder's thumb, so that the sliding button is specifically connected to an adjustable electrically controlled resistor, and the brightness of the backlight layer 14 is adjusted by the rangefinder sliding button, which is extremely easy to operate.

[0038] Reference Figure 2The data recording module 25 mainly adopts a hard disk or a chip (generally a hard disk is selected, and a storage chip is generally selected for a portable rangefinder with a smaller volume). The data recording module 25 has a storage function and stores historical distance measurement values. The data recording module 25 is connected to the main control processing module 2, receives the retrieval instruction of the main control processing module 2, and sends any one or more groups of stored information through the main control processing module 2 to the liquid crystal module 1 of the rangefinder for display.

[0039] Reference Figure 2 The key input module 3 is connected to the main control processing module 2, and provides a priority control channel that covers the internal color configuration file of the main control processing module 2, that is, the main control processing module 2 gives priority to the input instructions of the key input module 3 with a higher running level, so that the backlight layer 14 and the RGB backlight module are preferentially operated according to the input instructions of the technician, and the display module of the rangefinder displays the color selected by the technician; when the technician specifies the color through the key input module 3, the main control processing module 2 suspends the native color refresh instruction, the liquid crystal module 1 stops refreshing, and the display color of the RGB backlight module is fixed at the same color.

[0040] Reference Figure 2 , the automatic setting module 31 is connected to the key input module 3 and the main control processing module 2, receives the command input of the key input module 3, and pre-stores the input command in the main control processing module 2; in this embodiment, the automatic setting module 31 stores a clock command file, reads the clock information, and automatically runs the command file when entering the preset time period, sends a change command to the main control processing module 2, changes the color configuration file running inside the main control processing module 2, and then in the preset time period, the backlight panel 15 of the display module and the RGB backlight module of the liquid crystal module 1 display different numerical colors; this solution is suitable for automatic switching during the day and night, and is suitable for technicians to regularly enter abnormal and fixed light environments for measurement. The technician can set the automatic brightness adjustment time in the automatic setting module 31 through the key input module 3. When the preset time node is reached, the brightness control module 22 and the backlight control module 24 simultaneously increase the supply current value of the liquid crystal module 1 when the main control processing module 2 receives the data display, and increases the backlight brightness of the backlight layer 14 or the numerical display brightness of the liquid crystal module 1.

[0041] Reference Figure 2, the buzzer output module 23 is connected to the main control processing module 2 and the key input module 3, and the buzzer input module plays a role of sound reminder; the key input module 3 provides a value comparison and setting channel, presets a value or a preset vertical interval in the main control processing module 2 and presets a judgment standard accordingly. When the measurement result uploaded by the distance measuring circuit received by the main control processing module 2 meets the judgment standard of the preset value and the preset interval, the buzzer output module 23 makes a sound prompt; the buzzer output module 23 is directly connected to the key input module 3, and the trigger condition of the buzzer is directly written into the buzzer output module 23. Without the need to detect the value calculation, when the distance measuring circuit measures the trigger value, the buzzer can directly sound an alarm, thereby improving the prompt speed and reaction sensitivity of the rangefinder; in addition, the buzzer output module 23 can cooperate with the color control module 21 to operate. When the value comparison result is the preset result, when the liquid crystal module refreshes the display value at the initial time point of the display frame, the buzzer output module 23 directly controls the operation of the buzzer, and at the same time, the liquid crystal module periodically changes the actual color at the preset frame number interval, and cooperates with the sound of the buzzer to enhance the color prompt effect.

[0042] Reference Figure 2 The wireless module 26 has a network connection function or a satellite communication function. The network connection function is a non-essential function. In the design of rangefinders with high cost-effectiveness requirements, the network connection function can be discarded. Rangefinders in the prior art usually do not have this function; the wireless module 26 is connected to the main control processing module 2 to build a wireless connection channel between the main control processing module 2 and the control terminal, and then update the internal color configuration file and other instruction files; the wireless module 26 provides wireless transmission channels such as Bluetooth, Lora, and WIFI. In actual applications, Bluetooth wireless connection technology is usually used to connect to the control terminal to provide a color configuration file; for rangefinders with a higher degree of intelligence, 4 / 5G connection technology can be used to connect to the network, match the model and download the latest color configuration file.

[0043] On the basis of the above, the power module 4 provides current to each module and plays a role in power supply.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A TN screen color display module for a rangefinder, comprising a liquid crystal module (1), characterized in that: The backlight unit of the liquid crystal module (1) adopts a plurality of RGB backlight units, and the plurality of RGB backlight units are connected to LCD electrodes; Also includes: Polarizers (12) are arranged above and below the liquid crystal module (1); A backlight layer (14), disposed below the polarizing plate (12) and providing backlight; A main control processor is arranged inside the rangefinder and controls the backlight layer (14) and the liquid crystal module (1) to light up.

2. A control system for a display module of a TN screen color display of a rangefinder as claimed in claim 1, comprising a rangefinder circuit, the rangefinder circuit being connected to a rangefinder component of the rangefinder, characterized in that: It also includes a main control processing module (2), a color control module (21), a data recording module (25), and a power supply module (4); The main control processing module (2) is connected to the distance measuring circuit of the distance meter, and the distance measuring circuit sends the measurement result to the main control processing module (2); the main control processing module (2) stores a pre-written color configuration file, and runs the color configuration file while receiving the result value to generate a command signal; The color control module (21) is connected to the control circuits of the plurality of RGB backlight units in the liquid crystal module (1), and the color control module (21) is connected to the main control processing module (2), receives a command signal, and controls the corresponding RGB backlight unit to display a corresponding value and a corresponding color; The data recording module (25) stores historical distance measurement values, the main control processing module (2) is connected to the data recording module (25), retrieves the stored information of the data recording module (25), and the liquid crystal module (1) displays the retrieved result; The power supply module (4) is used to control the power supply of the system.

3. The control system of the display module of the TN screen color display of the rangefinder according to claim 2 is characterized in that: Also includes a backlight control module (24); The backlight control module (24) is connected to the backlight layer (14), receives the command signal from the main control processing module (2), and changes the operating state of the backlight layer (14).

4. The control system of the display module of the TN screen color display of the rangefinder according to claim 2 is characterized in that: It also includes a key input module (3); The key input module (3) is connected to the main control processing module (2) and provides a priority control channel that covers the internal color configuration file of the main control processing module (2). The main control processing module (2) controls the display state of the backlight layer (14) and the liquid crystal module (1) according to the instructions of the key input module (3).

5. The control system of the display module of the TN screen color display of the rangefinder according to claim 4 is characterized in that: Also includes a buzzer output module (23); The buzzer output module (23) is connected to the main control processing module (2) and the key input module (3); the key input module (3) provides a value comparison and setting channel, presets a value or a preset vertical interval in the main control processing module (2) and presets a corresponding judgment standard; when the measurement result uploaded by the distance measurement circuit received by the main control processing module (2) meets the judgment standard of the preset value and preset interval, the buzzer output module (23) makes a sound prompt.

6. The control system of the display module of the TN screen color display of the rangefinder according to claim 4, characterized in that: Also includes a brightness control module (22); The brightness control module (22) is connected to the main control processing module (2) and the liquid crystal module (1), receives the electrical signal from the main control processing module (2), and controls the liquid crystal module (1) to change the brightness with a preset color.

7. The control system of the display module of the TN color display of the rangefinder according to claim 6, characterized in that: Also includes an automatic setting module (31); The automatic setting module (31) is connected to the key input module (3) and the main control processing module (2). The automatic setting module (31) has a clock instruction file pre-stored therein, reads clock information, and automatically runs the instruction file when entering a preset time period, and sends a change instruction to the main control processing module (2) to change the color configuration file running inside the main control processing module (2).

8. The control system of the display module of the TN screen color display of the rangefinder according to claim 2, characterized in that: Also includes a wireless module (26); The wireless module (26) has a network connection function, a wireless network communication function, and periodically automatically accesses a pre-downloaded color configuration file to update the instruction file inside the main control processing module (2); or, The wireless module (26) has a short-range wireless communication capability, approaches the control terminal and establishes a connection, downloads a color configuration file from the control terminal, and updates the instruction file inside the main control processing module (2).

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