CN112248766A - Ultrasonic-based condensation control system - Google Patents
Ultrasonic-based condensation control system Download PDFInfo
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- CN112248766A CN112248766A CN202011046219.7A CN202011046219A CN112248766A CN 112248766 A CN112248766 A CN 112248766A CN 202011046219 A CN202011046219 A CN 202011046219A CN 112248766 A CN112248766 A CN 112248766A
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- ultrasonic
- temperature
- control system
- condensation
- vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
- B60H3/02—Moistening ; Devices influencing humidity levels, i.e. humidity control
- B60H3/024—Moistening ; Devices influencing humidity levels, i.e. humidity control for only dehumidifying the air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/023—Cleaning windscreens, windows or optical devices including defroster or demisting means
- B60S1/026—Cleaning windscreens, windows or optical devices including defroster or demisting means using electrical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a condensation control system based on ultrasonic waves, which belongs to the technical field of vehicle-mounted electronic equipment and comprises a controller and an ultrasonic sensor arranged in a vehicle, wherein the controller comprises an MCU (microprogrammed control unit) microcontroller, an SBC (SBC) chip, a CAN (controller area network) transceiving interface, a switch control interface and an LED (light-emitting diode) display driving interface, and is used for judging whether condensation risks exist or not and controlling the temperature and the humidity in the vehicle; the ultrasonic sensor is internally provided with a temperature sensor for detecting temperature and assisting in judging the temperature in the vehicle. This condensation control system based on ultrasonic wave through the technique that utilizes the ultrasonic wave to survey the barrier to and the intensity decay principle that the ultrasonic wave propagated in the atmosphere, listen humidity, based on ripe ultrasonic wave technique, the cost has the advantage, can also effectually alleviate or eliminate the interior moisture condensation of car, promotes driving safety nature.
Description
Technical Field
The invention belongs to the technical field of vehicle-mounted electronic equipment, and particularly relates to a condensation control system based on ultrasonic waves.
Background
In modern automobiles, temperature is identified through various on-board electronic devices, such as engine coolant temperature, engine air inlet temperature, vehicle interior and exterior temperature, and the like. However, few solutions or low-cost solutions are applied to the humidity inside the vehicle. However, the lack of identification and control of humidity will increasingly fail to meet the driver's requirements for in-vehicle environment, comfort, and automation.
Research shows that the humidity of human body is 30-80% in winter and 30-60% in summer in the most comfortable temperature range. Effectively identify/control humidity, can promote driver's travelling comfort (body sense).
In addition, when a large temperature difference exists between the temperature environment inside and outside the vehicle and certain moisture exists in the environment, water vapor can be exposed on the front/side/rear windshield, so that the visual field of a driver is influenced, and hidden dangers are formed to the driving safety of the driver.
Based on the consideration, the humidity in the vehicle is identified by combining an ultrasonic sensor; and the trouble of the driver caused by moisture condensation in the automobile is reduced or eliminated through a temperature sensor, an air conditioner and a rear window heating system which are arranged on the automobile body.
Disclosure of Invention
In view of the deficiencies of the prior art, the present invention provides an ultrasonic based dew control system to address the problems set forth in the background above.
In order to achieve the purpose, the invention provides the following technical scheme: the condensation control system based on ultrasonic waves comprises a controller and an ultrasonic sensor installed in a vehicle, wherein the controller comprises an MCU (microprogrammed control unit) microcontroller, an SBC (session control unit) chip, a CAN (controller area network) transceiving interface, a switch control interface and an LED (light-emitting diode) display driving interface, and is used for judging whether condensation risks exist or not according to the temperature and the humidity in the vehicle and controlling the temperature and the humidity in the vehicle; the ultrasonic sensor is internally provided with a temperature sensor for detecting temperature and assisting in judging the temperature in the vehicle.
Further optimize this technical scheme, the equipment that dew condensation control system and automobile body are connected system power, earth connection, CAN network, hard-wired switch and display switch.
Further optimizing the technical scheme, the SBC chip includes a communication interface, a watchdog program, and a voltage stabilizer.
Further optimize this technical scheme, the dewfall control system, when the system judges there is the dewfall risk, the controller outputs alarm information to through the CAN network, the request is opened window heating, air conditioner refrigeration function, the temperature needs to be controlled below dew point temperature.
Further optimizing the technical scheme, the controller controls the sensor to transmit and receive ultrasonic waves, the MCU microcontroller calculates the attenuation rate of the ultrasonic waves received by the sensor according to the difference with the standard environment, and the current humidity is calculated by using the attenuation principle of ultrasonic waves propagated in the air.
Further optimizing the technical scheme, the controller calculates the dew point temperature of the dewing by utilizing the received outside temperature value and the self-calculated humidity value, and then compares the dew point temperature with the current inside temperature to judge whether the risk of the dewing exists.
Further optimize this technical scheme, ultrasonic sensor can also utilize the size of echo intensity, surveys the barrier around the automobile body.
Further optimize this technical scheme, the temperature sensor adopts the digital temperature sensor of model DSl8820, MCU microcontroller adopts control chip AT89C51 to constitute.
Further optimizing the technical scheme, the control chip AT89C51 in the MCU microcontroller carries out single bus communication with DSl8B20 through an I/O port, temperature parameters are read, and the I/O port line is externally connected with a pull-up resistor of 4.7K omega.
Further optimize this technical scheme, control chip AT89C51 among the MCU microcontroller communicates through UART mouth and the RS232 interface of nuclear core plate extension, transmits the temperature parameter of gathering.
Compared with the prior art, the invention provides a condensation control system based on ultrasonic waves, which has the following beneficial effects:
this condensation control system based on ultrasonic wave through the technique that utilizes the ultrasonic wave to survey the barrier to and the intensity decay principle that the ultrasonic wave propagated in the atmosphere, listen humidity, based on ripe ultrasonic wave technique, the cost has the advantage, can also effectually alleviate or eliminate the interior moisture condensation of car, promotes driving safety nature.
Drawings
Fig. 1 is a schematic structural diagram of a controller of an ultrasonic-based condensation control system according to the present invention;
fig. 2 is a schematic structural diagram of an ultrasonic sensor of the ultrasonic dew condensation control system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The first embodiment is as follows:
the condensation control system based on ultrasonic waves comprises a controller and an ultrasonic sensor installed in a vehicle, wherein the controller is in a structure shown in figure 1, the ultrasonic sensor is in a structure shown in figure 2, and the controller comprises an MCU (microprogrammed control unit) microcontroller, an SBC (housing control unit) chip, a CAN (controller area network) transceiving interface, a switch control interface and an LED (light-emitting diode) display driving interface and is used for judging whether condensation risks exist or not according to the temperature and humidity in the vehicle and controlling the temperature and humidity in the vehicle; the ultrasonic sensor is internally provided with a temperature sensor for detecting temperature and assisting in judging the temperature in the vehicle.
Specifically, the condensation control system and the equipment connected with the vehicle body are a system power supply, a grounding wire, a CAN network, a hard-wired switch and a display switch.
Specifically, the SBC chip includes a communication interface, a watchdog program, and a voltage regulator.
Specifically, the dew control system, when the system judges there is the dew risk, the controller outputs alarm information to through the CAN network, the request is opened window heating, air conditioner refrigeration function, the temperature need be controlled below dew point temperature.
Specifically, the controller controls the sensor to transmit and receive ultrasonic waves, the MCU microcontroller calculates the attenuation rate of the ultrasonic waves according to the difference between the ultrasonic waves and the standard environment, and the current humidity is calculated by using the attenuation principle of the ultrasonic waves propagated in the air.
Specifically, the controller calculates the dew point temperature of the condensation by using the received outside temperature value and the self-calculated humidity value, and then compares the dew point temperature with the current inside temperature to judge whether the risk of condensation exists.
Specifically, the ultrasonic sensor can detect the obstacles around the vehicle body by using the intensity of the echo.
Specifically, the temperature sensor adopts a digital temperature sensor with the model number of DSl8820, and the MCU microcontroller adopts a control chip AT89C51 to form the temperature sensor.
Specifically, the control chip AT89C51 in the MCU microcontroller performs single bus communication with DSl8B20 through the I/O port to read temperature parameters, and the I/O port line is externally connected to a pull-up resistor of 4.7K Ω.
Specifically, a control chip AT89C51 in the MCU microcontroller communicates with an RS232 interface expanded by the core board through a UART interface, and transmits the acquired temperature parameters.
Example two:
by adopting the ultrasonic-based condensation control system in the first embodiment, the following functions are realized based on the technology of detecting obstacles by ultrasonic waves and the principle of intensity attenuation of the ultrasonic waves propagating in the atmosphere:
1. receiving an in-vehicle temperature signal provided by a vehicle body network;
2. receiving an outside temperature signal provided by a vehicle body network;
3. detecting the environmental temperature in the vehicle;
4. detecting an obstacle;
5. calculating the dew point temperature according to the temperature and humidity in the vehicle;
6. comparing and judging the current temperature in the vehicle and the dew point temperature;
7. and reminding/controlling the starting or closing of the air conditioner/vehicle window heating system.
According to test data, the humidity in the automobile can be maintained at 40% -60% by using the ultrasonic-based condensation control system in winter, and the humidity in the automobile can be maintained at 30% -50% by using the ultrasonic-based condensation control system in summer, so that the trouble of moisture condensation in the automobile to a driver is reduced or eliminated.
The invention has the beneficial effects that: this condensation control system based on ultrasonic wave through the technique that utilizes the ultrasonic wave to survey the barrier to and the intensity decay principle that the ultrasonic wave propagated in the atmosphere, listen humidity, based on ripe ultrasonic wave technique, the cost has the advantage, can also effectually alleviate or eliminate the interior moisture condensation of car, promotes driving safety nature.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The condensation control system based on ultrasonic waves is characterized by comprising a controller and an ultrasonic sensor installed in a vehicle, wherein the controller comprises an MCU (microprogrammed control unit) microcontroller, an SBC (session control unit) chip, a CAN (controller area network) transceiving interface, a switch control interface and an LED (light-emitting diode) display driving interface and is used for judging whether condensation risks exist or not according to the temperature and humidity in the vehicle and controlling the temperature and humidity in the vehicle; the ultrasonic sensor is internally provided with a temperature sensor for detecting temperature and assisting in judging the temperature in the vehicle.
2. The ultrasonic based dew control system of claim 1, wherein the dew control system is connected to a vehicle body having a device system power supply, ground, CAN network, hard wired switch and display switch.
3. The ultrasonic-based condensation control system of claim 1, wherein said SBC chip comprises a communication interface, a watchdog program, and a voltage regulator.
4. The ultrasonic-based condensation control system according to claim 1, wherein when the system determines that there is condensation risk, the controller outputs alarm information and requests to start window heating and air conditioning refrigeration functions through a CAN network, and the temperature needs to be controlled below the dew point temperature.
5. The ultrasonic-based condensation control system according to claim 1, wherein the controller controls the sensor to transmit and receive ultrasonic waves, the MCU microcontroller calculates the local attenuation ratio based on the ultrasonic intensity information received from the sensor in combination with the difference from the standard environment, and calculates the current humidity based on the attenuation principle of the ultrasonic waves propagating through the air.
6. The ultrasonic-based condensation control system according to claim 1, wherein the controller calculates the dew point temperature of condensation using the received outside temperature value and the self-calculated humidity value, and then compares the dew point temperature with the current inside temperature to determine whether there is a risk of condensation.
7. The ultrasonic-based condensation control system according to claim 1, wherein the ultrasonic sensor is further capable of detecting an obstacle around the vehicle body by using the magnitude of the echo intensity.
8. The ultrasonic based dew control system of claim 1, wherein said temperature sensor is a digital temperature sensor model DSl8820, said MCU microcontroller is comprised of a control chip AT89C 51.
9. The ultrasonic based dew control system of claim 8, wherein the control chip AT89C51 in the MCU microcontroller is in single bus communication with DSl8B20 through the I/O port, which is externally connected with a 4.7K Ω pull-up resistor, to read the temperature parameter.
10. The ultrasonic-based condensation control system according to claim 8, wherein the control chip AT89C51 in the MCU microcontroller communicates with the RS232 interface extended from the core board through a UART port to transmit the collected temperature parameters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011046219.7A CN112248766A (en) | 2020-09-29 | 2020-09-29 | Ultrasonic-based condensation control system |
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| CN202011046219.7A CN112248766A (en) | 2020-09-29 | 2020-09-29 | Ultrasonic-based condensation control system |
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| CN202011046219.7A Pending CN112248766A (en) | 2020-09-29 | 2020-09-29 | Ultrasonic-based condensation control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030924A (en) * | 2021-03-05 | 2021-06-25 | 重庆长安汽车股份有限公司 | Low-cost whole vehicle ultrasonic radar performance optimization method and system |
| WO2023028879A1 (en) * | 2021-08-31 | 2023-03-09 | 华为技术有限公司 | Device cooling system and thermal management system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0894594A (en) * | 1994-09-28 | 1996-04-12 | Matsushita Electric Works Ltd | Ultrasonic humidity sensor and ultrasonic temperature/ humidity sensor |
| CN105667251A (en) * | 2016-02-18 | 2016-06-15 | 广东欧珀移动通信有限公司 | Automobile defogging method and device |
-
2020
- 2020-09-29 CN CN202011046219.7A patent/CN112248766A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0894594A (en) * | 1994-09-28 | 1996-04-12 | Matsushita Electric Works Ltd | Ultrasonic humidity sensor and ultrasonic temperature/ humidity sensor |
| CN105667251A (en) * | 2016-02-18 | 2016-06-15 | 广东欧珀移动通信有限公司 | Automobile defogging method and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030924A (en) * | 2021-03-05 | 2021-06-25 | 重庆长安汽车股份有限公司 | Low-cost whole vehicle ultrasonic radar performance optimization method and system |
| WO2023028879A1 (en) * | 2021-08-31 | 2023-03-09 | 华为技术有限公司 | Device cooling system and thermal management system |
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