CN115955822A - Vehicle-mounted display screen temperature adjusting method, display module and electronic product - Google Patents
Vehicle-mounted display screen temperature adjusting method, display module and electronic product Download PDFInfo
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- CN115955822A CN115955822A CN202211723398.2A CN202211723398A CN115955822A CN 115955822 A CN115955822 A CN 115955822A CN 202211723398 A CN202211723398 A CN 202211723398A CN 115955822 A CN115955822 A CN 115955822A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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Abstract
The invention relates to a vehicle-mounted display screen temperature adjusting method, a display module and an electronic product, wherein the method comprises the following steps: the display module is in communication connection with a control unit of the vehicle, acquires the state information of an air conditioner in the vehicle and judges whether the air conditioner is in a refrigerating state or a heating state; monitoring the temperature of the display screen, judging whether the temperature of the display screen is higher than a threshold TH1, if so, judging whether the air-conditioning state is a refrigerating state, and if so, controlling an air outlet of the air conditioner to blow air to the display screen for cooling until the temperature is lower than TH2; monitoring the temperature of the display screen, judging whether the temperature of the display screen is lower than a threshold TL1, judging whether the air-conditioning state is a heating state if the temperature of the display screen is lower than the threshold TL1, and controlling an air-conditioning air outlet to blow air to the display screen for heating until the temperature is higher than TL2 if the air-conditioning air outlet is the heating state; wherein TH1> TH2> TL2> TL1. According to the invention, the display unit is in communication connection with the control unit of the vehicle, and the air conditioner in the vehicle is controlled to heat or cool the display screen, so that the temperature of the display screen is regulated.
Description
Technical Field
The invention relates to the technical field of display screens, in particular to a vehicle-mounted display screen temperature adjusting method, a display module and an electronic product.
Background
Compared with products such as mobile phones, flat plates and notebooks, the working environment of the vehicle-mounted display screen is much worse, the main embodiment is that the temperature difference and the vibration are different, the influence of the temperature on the display screen is larger, and when the temperature is low, the response speed of the display screen is slowed down, even the liquid crystal lattice is crystallized, so that the liquid crystal display cannot work normally. When the temperature is too high, the characteristics of each material of the display module are changed, so that abnormal display is caused, for example, the liquid crystal is changed into a bright state. At present, temperature adjustment of the display screen is performed by additionally adding a temperature control device, but the cost and the volume are increased. Therefore, a simple temperature control method is urgently needed to be found for adjusting the temperature of the display screen.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a vehicle-mounted display screen temperature adjusting method which utilizes the refrigeration and heating functions of an air conditioner in a vehicle to adjust the temperature of a vehicle-mounted display screen, and heats or cools the vehicle-mounted display screen so that the display screen can normally work.
Specifically, the technical scheme of the invention is as follows:
on one hand, a vehicle-mounted display screen temperature adjusting method is provided, and comprises the following steps:
the display module is in communication connection with a control unit of the vehicle, acquires the state information of an air conditioner in the vehicle and judges whether the air conditioner is in a refrigerating state or a heating state;
monitoring the temperature of the display screen, judging whether the temperature of the display screen is higher than a threshold TH1, judging whether the air-conditioning state is a refrigerating state if the temperature of the display screen is higher than the threshold TH1, and controlling an air-conditioning outlet to blow air to the display screen to cool the display screen until the temperature is lower than TH2 if the air-conditioning state is the refrigerating state;
monitoring the temperature of the display screen, judging whether the temperature of the display screen is lower than a threshold TL1, judging whether the air-conditioning state is a heating state if the temperature of the display screen is lower than the threshold TL1, and controlling an air-conditioning air outlet to blow air to the display screen for heating until the temperature is higher than TL2 if the air-conditioning air outlet is the heating state;
wherein TH1> TH2> TL2> TL1.
As the preferred technical scheme, the display screen comprises an LED backlight panel and a backlight bracket.
As the preferred technical scheme, one side of the LED backlight lamp plate is provided with an NTC resistor, and the NTC resistor is used for detecting the temperature of the display screen.
As a preferred technical scheme, the display screen is a TFT liquid crystal display screen.
In a second aspect, a vehicle-mounted display module is provided, which includes a processing control module, a communication module, an ADC module and a liquid crystal display module, where the liquid crystal display module includes a display screen and a backlight, and the display screen can be heated or cooled by using the above method.
As a preferred technical scheme, the processing control module comprises an MCU, the ADC module comprises an NTC resistor, and the ADC module outputs the temperature signal value to the MCU through a serial port.
As a preferred technical scheme, the MCU comprises a register, and the register stores TH1, TH2, TL2 and TL1 values.
As a preferred technical scheme, the temperature signal value is transmitted to the MCU and compared with the TH1 or TH2 or TL1 value.
As a preferred technical scheme, the communication module is used for being in communication connection with a control unit of the vehicle, acquiring the state information of the air conditioner in the vehicle, sending the information to the control unit of the vehicle and controlling the air conditioner in the vehicle to blow air to the display screen.
In a third aspect, a vehicle-mounted electronic product is provided, which includes the vehicle-mounted display module set.
Compared with the prior art, the invention achieves the following technical effects: through the control unit communication connection with the display unit and car, heat or cool down the display screen through the inside air conditioner of control car, realize the temperature regulation to the display screen, provide a low-cost display screen ambient temperature control method.
Description of the drawings:
fig. 1 is a schematic flow chart of a method for adjusting the temperature of a vehicle-mounted display screen according to embodiment 1 of the present invention;
fig. 2 is a schematic view of a vehicle-mounted display module according to embodiment 2 of the present invention;
fig. 3 is a schematic diagram of an NTC sampling circuit according to embodiment 2 of the present invention;
description of reference numerals:
a process control module 11; a communication module 12; an ADC module 13; a liquid crystal display module 14; a control unit 21; an air conditioner 22.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. In the description of the present invention, it is noted that the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to the invention, the display module is in communication connection with the air conditioner in the vehicle, the temperature of the display screen is monitored and compared with the preset temperature, and the temperature of the air conditioner and the air blowing direction are regulated to heat or cool the display screen, so that the low-cost display screen heating method is provided, and is energy-saving and simple.
Example 1
As shown in fig. 1, the present embodiment provides a method for adjusting a temperature of a vehicle-mounted display screen, where the method includes:
s10: the display module is in communication connection with the control unit 21 of the vehicle, acquires the state information of the air conditioner 22 in the vehicle, and judges whether the air conditioner 22 is in a cooling state or a heating state. The communication module 12 is connected to obtain the information of the state of the air conditioner 22 in the vehicle.
S20: the temperature of control display screen judges whether the display screen temperature is higher than threshold TH1, if be higher than threshold TH1, judges whether the air conditioner 22 state is the refrigeration state, if be the refrigeration state, then control air conditioner 22 air outlet and blow to the display screen and cool down, until the temperature is less than TH2. Here, the threshold TH1 is a preset maximum temperature until the display screen is cooled to a preset temperature TH2 in a normal hotter environment, thus completing the cooling process of the air conditioner 22 on the display screen in a cooling state.
S30: the temperature of monitoring display screen judges whether display screen temperature is less than threshold TL1, if be less than threshold TL1, judges whether air conditioner 22 state is the state of heating, if be the state of heating, then control air conditioner 22 air outlet and blow to the display screen and heat until the temperature is higher than TL2. The threshold TL1 is a preset minimum temperature until the display screen is heated to a preset temperature TL2 in a normal, relatively cold environment, so that the heating process of the display screen by the air conditioner 22 in a heating state is completed.
From the above, TH1> TH2> TL2> TL1.
The display screen comprises an LED backlight panel and a backlight support. The display screen is a TFT liquid crystal display screen.
Preferably, an NTC resistor is arranged on one side of the LED backlight panel and used for detecting the temperature of the display screen, and then the relation between the display screen and a preset threshold value is judged. The NTC resistance decreases exponentially with the temperature rise, and has a thermistor phenomenon and material with a negative temperature coefficient.
It should be noted that the above method steps are not intended to limit the execution order of the steps, and in fact, some steps may be executed simultaneously or in the reverse order of the steps, which is not limited herein.
The inventor finds that the defects in the prior art are mainly caused by the following reasons in the process of implementing the application:
the NTC resistance temperature measurement is a mature technical scheme, and at present, the method for solving the problem of heating of the display screen in a low-temperature environment comprises the steps of increasing manufacturing procedures or improving the heating efficiency of the liquid crystal display screen, and the production efficiency and the manufacturing cost can be improved in structural design and production and manufacturing.
Therefore, the scheme of the application is mainly designed and optimized from the following aspects:
liquid crystal becomes inert in a low-temperature environment, and is an inherent property of a material, and the liquid crystal is difficult to deflect at a deflection angle in the low-temperature environment, so that the display of a picture is influenced, and the use is influenced. In order to solve the problem, the inventor adopts the scheme to improve the temperature of the display screen.
The invention is different from the prior technical scheme, does not additionally increase a temperature control device, can realize the temperature control of the display screen by using the prior device, does not influence the appearance of the display screen, does not occupy space, and simultaneously realizes energy conservation and environmental protection.
Example 2
As shown in fig. 2, the present embodiment provides a vehicle-mounted display module, which includes a processing control module 11, a communication module 12, an ADC module 13, and a liquid crystal display module 14, where the liquid crystal display module 14 includes a display screen and a backlight, where the display screen can be heated or cooled by using the method mentioned in embodiment 1, and is naturally inherited in this embodiment.
Preferably, the processing control module 11 includes an MCU, the ADC module 13 includes an NTC resistor, and the ADC module 13 outputs the temperature signal value to the MCU through a serial port. As shown in fig. 3, a NTC sampling circuit diagram is given. In the circuit, the NTC2 is one end of an NTC resistor, the other end of the NTC resistor is grounded, and the NTC2 end is connected with a 3.3V power supply through a pull-up resistor R26, so that voltage division is realized. The ADC module ADC124S021 CI MM performs A/D conversion on the voltage value of the NTC end, and the conversion result is output to the MCU through SP I. In order to reduce the interference on the NTC2 terminal voltage, the 3.3V power supply and the NTC2 voltage are respectively filtered by the filter capacitors C42 and C43 and the filter capacitors C81 and C41.
Preferably, the MCU includes registers that store the TH1, TH2, TL2 and TL1 values. The temperature signal value is transmitted to the MCU and compared with the TH1 or TH2 or TL1 value. The comparison with the preset threshold value determines the ambient temperature of the current display screen, so as to determine whether the in-vehicle air conditioner 22 is required to heat or cool.
Preferably, the communication module 12 is configured to perform communication connection with the control unit 21 of the vehicle, acquire status information of the in-vehicle air conditioner 22, send the information to the control unit 21 of the vehicle, and control the in-vehicle air conditioner 22 to blow air to the display screen. It will be appreciated by those skilled in the art that the communication connection may be either a wired connection or a wireless connection and will not be discussed further herein.
Example 3
The embodiment provides a vehicle-mounted electronic product, which naturally continues to the vehicle-mounted display module disclosed in embodiment 2, the electronic device in the embodiment exists in various forms, and the vehicle-mounted electronic product comprises a display screen, and can be a vehicle-mounted sound system, a navigation system, a vehicle information system and a vehicle-mounted household appliance product. The display screen in the electronic product can be in communication connection with the air conditioner 22 in the vehicle, and the air conditioner 22 is controlled to blow air to the display screen to heat or cool.
Claims (10)
1. A vehicle-mounted display screen temperature adjusting method is characterized by comprising the following steps:
the display module is in communication connection with a control unit of the vehicle, acquires state information of an air conditioner in the vehicle and judges whether the air conditioner is in a refrigerating state or a heating state;
monitoring the temperature of the display screen, judging whether the temperature of the display screen is higher than a threshold TH1, judging whether the air-conditioning state is a refrigerating state if the temperature of the display screen is higher than the threshold TH1, and controlling an air-conditioning outlet to blow air to the display screen to cool the display screen until the temperature is lower than TH2 if the air-conditioning state is the refrigerating state;
monitoring the temperature of the display screen, judging whether the temperature of the display screen is lower than a threshold TL1, judging whether the air-conditioning state is a heating state if the temperature of the display screen is lower than the threshold TL1, and controlling an air-conditioning air outlet to blow air to the display screen for heating until the temperature is higher than TL2 if the air-conditioning air outlet is the heating state;
wherein TH1> TH2> TL2> TL1.
2. The vehicle-mounted display screen temperature adjusting method according to claim 1, wherein the display screen comprises an LED backlight panel and a backlight bracket.
3. The method for adjusting the temperature of the vehicle-mounted display screen according to claim 2, wherein an NTC resistor is arranged on one side of the LED backlight lamp panel and used for detecting the temperature of the display screen.
4. The method for adjusting the temperature of the vehicle-mounted display screen according to claim 2, wherein the display screen is a TFT liquid crystal display screen.
5. A vehicle-mounted display module is characterized by comprising a processing control module, a communication module, an ADC module and a liquid crystal display module, wherein the liquid crystal display module comprises a display screen and backlight, and the display screen can be heated or cooled by the method of any one of claims 1 to 4.
6. The vehicle-mounted display module according to claim 5, wherein the processing control module comprises an MCU, the ADC module comprises an NTC resistor, and the ADC module outputs the temperature signal value to the MCU through a serial port.
7. The vehicle-mounted display module according to claim 6, wherein the MCU comprises a register, and the register stores the TH1, TH2, TL2 and TL1 values as defined in any one of claims 1-4.
8. The vehicle-mounted display module according to claim 7, wherein the temperature signal value is transmitted to the MCU and compared with the TH1 or TH2 or TL1 value.
9. The vehicle-mounted display module according to claim 5, wherein the communication module is used for being in communication connection with a control unit of a vehicle to obtain the state information of the air conditioner in the vehicle, and sending the information to the control unit of the vehicle to control the air conditioner in the vehicle to blow air to the display screen.
10. An in-vehicle electronic product, characterized by comprising the in-vehicle display module set of any one of claims 5-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211723398.2A CN115955822A (en) | 2022-12-30 | 2022-12-30 | Vehicle-mounted display screen temperature adjusting method, display module and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211723398.2A CN115955822A (en) | 2022-12-30 | 2022-12-30 | Vehicle-mounted display screen temperature adjusting method, display module and electronic product |
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| CN115955822A true CN115955822A (en) | 2023-04-11 |
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| CN202211723398.2A Pending CN115955822A (en) | 2022-12-30 | 2022-12-30 | Vehicle-mounted display screen temperature adjusting method, display module and electronic product |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007030790A (en) * | 2005-07-29 | 2007-02-08 | Calsonic Kansei Corp | Vehicular meter device |
| CN102636999A (en) * | 2011-12-27 | 2012-08-15 | 长春希达电子技术有限公司 | Environment monitoring control system for LED (light-emitting diode) display screens |
| CN204845440U (en) * | 2015-07-27 | 2015-12-09 | 张蓁蓁 | Car touch -sensitive screen heat sink |
| CN111356339A (en) * | 2020-02-28 | 2020-06-30 | 上海天马微电子有限公司 | Vehicle-mounted heat dissipation system and heat dissipation method |
| CN113103843A (en) * | 2021-05-19 | 2021-07-13 | 恒大恒驰新能源汽车研究院(上海)有限公司 | Temperature regulation method, storage medium and system of head-up display |
| CN217145573U (en) * | 2022-01-13 | 2022-08-09 | 重庆长安汽车股份有限公司 | Constant temperature protection system and car of new line display |
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2022
- 2022-12-30 CN CN202211723398.2A patent/CN115955822A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007030790A (en) * | 2005-07-29 | 2007-02-08 | Calsonic Kansei Corp | Vehicular meter device |
| CN102636999A (en) * | 2011-12-27 | 2012-08-15 | 长春希达电子技术有限公司 | Environment monitoring control system for LED (light-emitting diode) display screens |
| CN204845440U (en) * | 2015-07-27 | 2015-12-09 | 张蓁蓁 | Car touch -sensitive screen heat sink |
| CN111356339A (en) * | 2020-02-28 | 2020-06-30 | 上海天马微电子有限公司 | Vehicle-mounted heat dissipation system and heat dissipation method |
| CN113103843A (en) * | 2021-05-19 | 2021-07-13 | 恒大恒驰新能源汽车研究院(上海)有限公司 | Temperature regulation method, storage medium and system of head-up display |
| CN217145573U (en) * | 2022-01-13 | 2022-08-09 | 重庆长安汽车股份有限公司 | Constant temperature protection system and car of new line display |
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