CN217460742U - Liquid crystal instrument brightness control system and engineering machinery - Google Patents
Liquid crystal instrument brightness control system and engineering machinery Download PDFInfo
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- CN217460742U CN217460742U CN202221567171.9U CN202221567171U CN217460742U CN 217460742 U CN217460742 U CN 217460742U CN 202221567171 U CN202221567171 U CN 202221567171U CN 217460742 U CN217460742 U CN 217460742U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 44
- 238000005286 illumination Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000005065 mining Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 230000008859 change Effects 0.000 description 5
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- 238000012986 modification Methods 0.000 description 3
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- 238000002474 experimental method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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Abstract
The utility model discloses a liquid crystal instrument brightness control system and engineering machinery, which comprises a main controller, an illumination detection part, a temperature detection part, an instruction input part and a display device; the main controller is used for processing the collected signals and outputting corresponding instrument brightness values; the illumination detection component is arranged in the cab, is connected with the input end of the main controller and is used for measuring the ambient illumination intensity; the temperature detection component is arranged in the cab, is connected with the input end of the main controller and is used for measuring the ambient temperature; the command input component is arranged on an instrument desk in a cab, is connected with the input end of the main controller and is used for inputting operation information to the main controller to adjust the brightness parameters of the instrument; the display device is arranged on an instrument desk of a cab, is connected with the output end of the main controller and is used for receiving the brightness value signal and changing the current screen brightness. The utility model provides the high intelligent degree of whole car provides more comfortable driving environment for the driver.
Description
Technical Field
The utility model relates to a liquid crystal instrument brightness control system belongs to engineering machine tool technical field.
Background
The mining dump truck is mining machinery and is suitable for severe operation environment of surface mines, so that the mining dump truck has high requirements on liquid crystal instruments. The illumination intensity of a mine is greatly different between an illumination surface and a shady surface, a driver can not see information displayed by the liquid crystal instrument clearly due to sudden rise of the illumination intensity at a large-angle turning part sometimes, and the driver can not operate and adjust the brightness at an instrument end in the driving process, so that the acquisition of the whole vehicle information by the driver is influenced, and huge production potential safety hazards are generated.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned prior art exists, the utility model provides a be applied to liquid crystal instrument brightness control system of mining self-discharging has increased photosensitive sensor, and temperature sensor and bus keyboard (contain automatic brightness button and knob function) utilize main control unit to export suitable liquid crystal instrument luminance value after the data processing who collects, have realized the automation or the manual control of mining dump truck liquid crystal instrument luminance, have avoided the emergence of incident.
In order to realize the purpose, the utility model discloses a technical scheme is:
the utility model discloses a first aspect discloses a liquid crystal instrument brightness control system, which comprises a main controller, an illumination detection part, a temperature detection part, an instruction input part and a display device; the main controller is used for processing the collected signals and outputting corresponding instrument brightness values; the illumination detection component is arranged in the cab, is connected with the input end of the main controller and is used for measuring the ambient illumination intensity; the temperature detection component is arranged in the cab, is connected with the input end of the main controller and is used for measuring the ambient temperature; the command input component is arranged on an instrument desk in a cab, is connected with the input end of the main controller and is used for inputting operation information to the main controller to adjust the brightness parameters of the instrument; the display device is arranged on an instrument desk of a cab, is connected with the output end of the main controller and is used for receiving the brightness value signal and changing the current screen brightness.
In some embodiments, the illumination detection component is a photosensitive sensor for converting an optical signal into an electrical signal to be transmitted to the main controller.
In some embodiments, the temperature detecting component is a temperature sensor for converting a temperature signal into an electrical signal to be transmitted to the main controller.
In some embodiments, the temperature sensor is a non-contact temperature sensor.
In some embodiments, the command input unit is a bus keyboard, and the bus keyboard is a control panel with a CAN communication function and is connected with the main controller through a CAN line.
In some embodiments, an automatic brightness button and a manual adjustment knob are provided in the bus keyboard.
In some embodiments, the display device is a liquid crystal instrument and is connected with the main controller through a CAN line.
The utility model discloses the second aspect discloses an engineering machine tool installs foretell liquid crystal instrument brightness control system.
In some embodiments, the work machine comprises a mining dump truck.
The utility model discloses beneficial effect:
the utility model discloses improved present mining dump truck liquid crystal instrument brightness control system, liquid crystal instrument brightness control system after the design can realize liquid crystal instrument luminance along with driver's cabin illumination intensity automatic adjustment to changeable automatic and two kinds of modes manual, let the driver under the condition that does not influence normal driving, also can set up luminance through the bus keyboard knob, strengthened the stability and the security of system, improved the intelligent degree of equipment, let the driver drive experience better.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
fig. 1 is a system block diagram of a brightness control system of a liquid crystal instrument of the present invention;
fig. 2 is a flow chart of the system for controlling the brightness of the liquid crystal instrument of the present invention.
The attached drawings are as follows: 1-display device, 2-instruction input component, 3-logical operation element and 4-detection component.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in FIG. 1, a system for controlling brightness of a liquid crystal instrument mainly comprises a human-computer interaction part, a logic operation element and a detection part.
The display device is arranged on an instrument desk of a cab, is connected with the output end of the main controller and is used for displaying the current brightness parameters; the command input component is arranged at a position in the instrument desk of the cab, which is easy to operate by a driver, is connected with the input end of the main controller and is used for inputting operation information to the main controller to adjust the brightness parameters of the instrument.
The main controller constitutes a logic operation element for processing various signals and issuing instructions.
The photosensitive sensor and the temperature sensor form a detection part, are arranged at proper positions in the cab, and are used for acquiring illumination and temperature signals and sending the signals to the main controller.
Further scheme: the photosensitive sensor is a sensor which converts an optical signal into an electrical signal by using a photosensitive element, and the simplest device is a photosensitive resistor which can sense the light and shade change of light and is amplified by a simple electronic circuit.
Further scheme: the temperature sensor converts a temperature signal into an electric signal, a non-contact temperature sensor is adopted, the temperature sensor is used for enabling a main controller to calculate a temperature compensation value so as to reduce the influence of temperature on the photosensitive sensor, and the relation between the temperature and the resistance can be obtained through a table look-up method.
Further scheme: the command input part is a bus keyboard, is a control panel with CAN function, CAN self-define automatic brightness keys and manual adjusting knobs, and the line keyboard CAN periodically send corresponding messages to the CAN network. The knob is essentially a slide rheostat, and the current opening degree of the knob can be sent to the bus through the change of the resistance.
Further scheme: the display device is a liquid crystal instrument and is connected with the main controller through a CAN line.
As shown in fig. 2, the liquid crystal instrument brightness control system function includes two modes, namely, automatic control and manual control of the brightness of the liquid crystal instrument of the mining dump truck.
In the automatic brightness control mode of the liquid crystal instrument of the mining dump truck, a driver starts an automatic brightness button on a bus keyboard at the moment, the system enters the automatic brightness control mode, and a temperature sensor detects the temperature of a cab at the moment and sends the temperature to a main controller; the photosensitive sensor detects the illumination intensity of the cab at the moment and sends the illumination intensity to the main controller; the main controller calculates a currently required temperature compensation value through a temperature value, namely an influence difference value of the current temperature and a standard temperature on the photoresistor, and then calculates a currently appropriate brightness value through a logic threshold value method.
The logic threshold value belongs to an empirical method, and a large amount of experiments are needed to obtain parameter values, and at this time, the illumination intensity and the brightness value can be corresponding to the values shown in table 1:
| intensity of illumination | Brightness value of liquid crystal instrument |
| A1 | B1 |
| A2 | B2 |
| … | … |
| An | Bn |
TABLE 1 correspondence table of illumination intensity and brightness value
Setting the illumination intensity as A and the brightness value of the liquid crystal instrument as B, wherein A1=0 can be set at the moment, namely under the condition that the illumination intensity is 0, the liquid crystal instrument still needs to have a brightness value, and B1 is not equal to 0, so as to prevent the situation that the driver cannot read the vehicle information because the liquid crystal instrument is completely dark; theoretically, the number of the upper threshold values can be determined through experiments, but too much number can cause tedious programs and reduce the processing efficiency of the controller, and too much number can cause frequent brightness change of the instrument, reduce the driving experience and easily cause safety accidents; and the threshold value quantity is too small, the effect of automatic adjustment cannot be caused, and the driving experience of a driver can be reduced, so that the quantity of n is recommended to be within 5-10, and n =10 is selected here, namely, the brightness of the liquid crystal instrument is divided into 10 grades.
At this time, when the light intensity a is a1-a2, the corresponding meter luminance value B is B1, and similarly, when a9-a10, it corresponds to B9, and when a > a10, it corresponds to B = B10.
After the main controller calculates the brightness value of the corresponding liquid crystal instrument, the numerical value CAN be sent to the liquid crystal instrument through the CAN bus, and the current brightness value is changed after the liquid crystal instrument receives the brightness numerical value, so that the brightness of the liquid crystal instrument is automatically changed along with the ambient illumination intensity. It can be seen that the brightness is stepped in the automatic brightness control mode.
In the manual control mode of the brightness of the liquid crystal instrument of the mining dump truck, the driver closes the automatic brightness key on the bus keyboard at the moment, the manual control mode of the brightness of the liquid crystal instrument is entered, the bus keyboard sends a command for closing the automatic brightness control to the main controller at the moment, and the resistance value of the knob at the moment is converted into a percentage signal through the operation of the bus keyboard and sent to the main controller; the main controller receives a command of the bus keyboard and starts to read the percentage of the knob, at the moment, the percentage sent by the knob is set to be P, the brightness of the instrument is C, the minimum brightness of the instrument is C1, the maximum brightness is C2, and C1 < = C < = C2 can be obtained, so that the calculation can be carried out
C= C1+(C2-C1)*P
After the main controller calculates the brightness value, the brightness value is sent to the liquid crystal instrument through the bus, and after the liquid crystal instrument receives the brightness value, the current brightness value is changed, so that the brightness of the liquid crystal instrument is manually adjusted under the condition that driving is not influenced. It can be seen that the brightness in the manual control mode is gearless and is a stepless linear change.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are also meant to be within the scope of the invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make modifications or changes to equivalent embodiments by utilizing the above technical contents without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical matters of the present invention are within the scope of the present invention.
Claims (9)
1. A liquid crystal instrument brightness control system, comprising:
the main controller is used for processing the collected signals and outputting corresponding instrument brightness values;
the illumination detection component is arranged in the cab, is connected with the input end of the main controller and is used for measuring the ambient illumination intensity;
the temperature detection component is arranged in the cab, is connected with the input end of the main controller and is used for measuring the ambient temperature;
the command input component is arranged on an instrument desk in a cab, is connected with the input end of the main controller and is used for inputting operation information to the main controller to adjust the brightness parameters of the instrument;
and the display device is arranged on the cab instrument desk, is connected with the output end of the main controller, and is used for receiving the brightness value signal and changing the current screen brightness.
2. The system for controlling the brightness of the liquid crystal instrument according to claim 1, wherein:
the illumination detection component is a photosensitive sensor and is used for converting an optical signal into an electric signal and transmitting the electric signal to the main controller.
3. The system for controlling the brightness of the liquid crystal instrument according to claim 1, wherein:
the temperature detection component is a temperature sensor and is used for converting a temperature signal into an electric signal and transmitting the electric signal to the main controller.
4. The system of claim 3, wherein:
the temperature sensor is a non-contact temperature sensor.
5. The brightness control system of the liquid crystal instrument according to claim 1, wherein:
the command input component adopts a bus keyboard, and the bus keyboard is a control panel with a CAN communication function and is connected with the main controller through a CAN line.
6. The system for controlling the brightness of the liquid crystal instrument according to claim 5, wherein:
an automatic brightness key and a manual adjusting knob are arranged in the bus keyboard.
7. The system for controlling the brightness of the liquid crystal instrument according to claim 1, wherein:
the display device is a liquid crystal instrument and is connected with the main controller through a CAN line.
8. A construction machine characterized in that:
a liquid crystal instrument luminance control system as claimed in any one of claims 1 to 7 is mounted.
9. A working machine according to claim 8, characterized in that:
the engineering machinery comprises a mining dump truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221567171.9U CN217460742U (en) | 2022-06-22 | 2022-06-22 | Liquid crystal instrument brightness control system and engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221567171.9U CN217460742U (en) | 2022-06-22 | 2022-06-22 | Liquid crystal instrument brightness control system and engineering machinery |
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| CN217460742U true CN217460742U (en) | 2022-09-20 |
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| CN202221567171.9U Active CN217460742U (en) | 2022-06-22 | 2022-06-22 | Liquid crystal instrument brightness control system and engineering machinery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116013217A (en) * | 2023-01-05 | 2023-04-25 | 上海伟世通汽车电子系统有限公司 | Method and device for adjusting display brightness of vehicle-mounted terminal, electronic equipment and storage medium |
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2022
- 2022-06-22 CN CN202221567171.9U patent/CN217460742U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116013217A (en) * | 2023-01-05 | 2023-04-25 | 上海伟世通汽车电子系统有限公司 | Method and device for adjusting display brightness of vehicle-mounted terminal, electronic equipment and storage medium |
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