阅读说明：本技术 一种汽车雨量传感器的雨量阈值调整方法及系统 (Rainfall threshold adjusting method and system of automobile rainfall sensor ) 是由 王芳壁 张一强 何文 杨腾宇 朱茜 张正琴 余小勇 刘泽隆 于 2021-08-31 设计创作，主要内容包括：本发明提供了一种汽车雨量传感器的雨量阈值调整方法及系统,该方法包括：获取目标车辆上传的当前雨量阈值、位置信息和雨量检测信息；基于目标车辆的位置信息确定实时天气信息,以及与目标车辆处于同一地区的其它车辆所上传的雨量检测信息；确定目标车辆所处地区当前是否处于下雨状态；若目标车辆所处地区处于下雨状态,则确定目标车辆的雨量阈值为第一雨量阈值；若目标车辆所处地区处于未下雨状态,则确定目标车辆的雨量阈值为第二雨量阈值；基于第一雨量阈值或第二雨量阈值同当前雨量阈值的相对大小,向目标车辆发送携带有目标雨量阈值的雨量阈值调整请求信号,使目标车辆的车身控制器按照目标雨量阈值对雨量传感器的雨量阈值进行调整。(The invention provides a rainfall threshold value adjusting method and a system of an automobile rainfall sensor, wherein the method comprises the following steps: acquiring a current rainfall threshold, position information and rainfall detection information uploaded by a target vehicle; determining real-time weather information and rainfall detection information uploaded by other vehicles in the same region with the target vehicle based on the position information of the target vehicle; determining whether the area where the target vehicle is located is in a rainy state at present; if the area where the target vehicle is located is in a rainy state, determining that the rainfall threshold of the target vehicle is a first rainfall threshold; if the area where the target vehicle is located is in a non-rainfall state, determining that the rainfall threshold of the target vehicle is a second rainfall threshold; and sending a rainfall threshold adjusting request signal carrying the target rainfall threshold to the target vehicle based on the relative size of the first rainfall threshold or the second rainfall threshold and the current rainfall threshold, so that the body controller of the target vehicle adjusts the rainfall threshold of the rainfall sensor according to the target rainfall threshold.)

1. A rainfall threshold value adjusting method of an automobile rainfall sensor is characterized by comprising the following steps:

step S1, acquiring current rainfall threshold, position information and rainfall detection information uploaded by a target vehicle;

step S2, determining real-time weather information of the area where the target vehicle is located and rainfall detection information uploaded by other vehicles in the same area with the target vehicle based on the position information of the target vehicle;

step S3, determining whether the area where the target vehicle is located is in a rainy state at present according to the real-time weather information of the area where the target vehicle is located and the rainfall detection information uploaded by other vehicles in the same area as the target vehicle;

step S4, if the area where the target vehicle is located is in a rainy state, determining that the rainfall threshold of the target vehicle is a first rainfall threshold;

step S5, if the area where the target vehicle is located is in a non-raining state, determining that the rainfall threshold of the target vehicle is a second rainfall threshold;

step S6, based on the relative size of the first rainfall threshold or the second rainfall threshold and the current rainfall threshold, sending a rainfall threshold adjustment request signal carrying a target rainfall threshold to the target vehicle, so that the vehicle body controller of the target vehicle adjusts the rainfall threshold of the rainfall sensor according to the target rainfall threshold.

2. The method according to claim 1, wherein while performing step S1, the method further comprises:

step S7, acquiring the current speed of the target vehicle;

when the current vehicle speed is greater than or equal to a first preset vehicle speed, executing the steps S1 to S6 according to a first periodic cycle; when the current vehicle speed is less than the first preset vehicle speed, executing the steps S1 to S6 according to a second cycle;

the first period is less than the second period.

3. A rainfall threshold adjustment system for an automotive rainfall sensor, comprising:

a cloud data platform; the system comprises a vehicle body controller, a rainfall sensor and a wiper motor, wherein the vehicle body controller is connected with a cloud data platform through a vehicle-mounted 4G/5G device;

the cloud data platform is used for executing the method of claim 1, generating a target rainfall threshold value based on the relative size of the first rainfall threshold value or the second rainfall threshold value and the current rainfall threshold value, and sending a rainfall threshold value adjustment request signal carrying the target rainfall threshold value to the vehicle body controller through the vehicle-mounted 4G/5G device, so that the vehicle body controller drives the rainfall sensor to adjust the current rainfall threshold value according to the target rainfall threshold value;

the rainfall sensor is also used for comparing the detected rainfall information with the adjusted rainfall threshold value, and further sending a signal for controlling the opening and closing actions of the wiper motor to the automobile body controller.

Technical Field

The invention belongs to the technical field of automobile electronics, and particularly relates to a rainfall threshold adjusting method and system of an automobile rainfall sensor.

Background

With the rapid development of modern automobile technology, the intellectualization of functions in vehicles is becoming the focus of people's attention. The automatic rainfall detection system is one of the automatic rainfall detection systems, when the sensor detects that the outside rains, the wiper system is automatically opened, and meanwhile, the working frequency of the wiper can be automatically adjusted according to the rainfall.

However, due to the limitation that the physical detection area of the sensor is too small, the situation that the rainfall detection is insensitive or the rainfall is detected by mistake can occur, so that the windscreen wiper is not started in time or is started by mistake, and the user experience is influenced.

Present current scheme can set for different sensitivity to rainfall sensor, and the user accessible rainfall sensitivity switch adjustment sensitivity size in the car, and unreasonable problem is set for to the sensitivity that this scheme can be solved because glass, the uniformity of sensor brought, but the rainfall detects insensitive and the false detection has these two problems of rain, and the requirement to sensitivity is opposite completely: the problem that the rainfall detection is insensitive and the sensitivity needs to be improved is solved; the problem that the sensitivity needs to be reduced due to rain in false detection is solved.

From the above description, the current system scheme of the rainfall sensor cannot effectively solve the two problems of insensitive rainfall detection and rain misdetection at the same time.

Disclosure of Invention

The invention provides a rainfall threshold adjusting method and system of an automobile rainfall sensor, which are used for solving the problem that the existing rainfall sensor system cannot simultaneously solve the two problems of insensitive rainfall detection and rain misdetection.

The technical scheme of the invention is as follows:

the invention also provides a rainfall threshold value adjusting method of the automobile rainfall sensor, which comprises the following steps:

step S1, acquiring current rainfall threshold, position information and rainfall detection information uploaded by a target vehicle;

step S2, determining real-time weather information of the area where the target vehicle is located and rainfall detection information uploaded by other vehicles in the same area with the target vehicle based on the position information of the target vehicle;

step S3, determining whether the area where the target vehicle is located is in a rainy state at present according to the real-time weather information of the area where the target vehicle is located and the rainfall detection information uploaded by other vehicles in the same area as the target vehicle;

step S4, if the area where the target vehicle is located is in a rainy state, determining that the rainfall threshold of the target vehicle is a first rainfall threshold;

step S5, if the area where the target vehicle is located is in a non-raining state, determining that the rainfall threshold of the target vehicle is a second rainfall threshold;

step S6, based on the relative size of the first rainfall threshold or the second rainfall threshold and the current rainfall threshold, sending a rainfall threshold adjustment request signal carrying a target rainfall threshold to the target vehicle, so that the vehicle body controller of the target vehicle adjusts the rainfall threshold of the rainfall sensor according to the target rainfall threshold.

Preferably, while performing step S1, the method further comprises:

step S7, acquiring the current speed of the target vehicle;

when the current vehicle speed is greater than or equal to a first preset vehicle speed, executing the steps S1 to S6 according to a first periodic cycle; when the current vehicle speed is less than the first preset vehicle speed, executing the steps S1 to S6 according to a second cycle;

the first period is less than the second period.

The invention also provides a rainfall threshold value adjusting system of the automobile rainfall sensor, which comprises the following components:

a cloud data platform; the system comprises a vehicle body controller, a rainfall sensor and a wiper motor, wherein the vehicle body controller is connected with a cloud data platform through a vehicle-mounted 4G/5G device;

the cloud data platform is used for executing the method of claim 1, generating a target rainfall threshold value based on the relative size of the first rainfall threshold value or the second rainfall threshold value and the current rainfall threshold value, and sending a rainfall threshold value adjustment request signal carrying the target rainfall threshold value to the vehicle body controller through the vehicle-mounted 4G/5G device, so that the vehicle body controller drives the rainfall sensor to adjust the current rainfall threshold value according to the target rainfall threshold value;

the rainfall sensor is also used for comparing the detected rainfall information with the adjusted rainfall threshold value, and further sending a signal for controlling the opening and closing actions of the wiper motor to the automobile body controller.

The invention has the beneficial effects that:

by analyzing the usage scenario and the problems encountered by the user, the system can find that the two problems, namely insensitive rainfall detection and rain misdetection, are technically one spear, but the two problems are not in conflict when the two problems are divided according to the usage scenario of the user. The user expects that: when raining, the rainfall detection is sensitive enough; when it is not raining, erroneous detection is not required. Therefore, the main content of the invention is how to introduce a rainfall judgment factor into the automatic rainfall detection system, so that the sensitivity of the rainfall sensor can be dynamically adjusted, and the expected performance of a user on the automatic windscreen wiper system in different time periods and different scenes is solved.

Drawings

FIG. 1 is a schematic diagram of the system of the present invention;

FIG. 2 is a logic flow diagram of the method of the present invention;

fig. 3 is a logic flow diagram of the rainfall threshold adjustment of the rainfall sensor of the present invention.

Detailed Description

The control system and method are further described in detail below with reference to the accompanying drawings:

referring to fig. 1, the invention provides a rainfall threshold adjusting system of a rainfall sensor, which comprises a rainfall sensor 1, a wiper motor 2, a vehicle body controller 3, a rainfall threshold switch 4, a vehicle-mounted 4G/5G device 5, a cloud data platform 6, third-party weather information 7, a vehicle body controller 8 and other vehicle data 9.

The cloud data platform 6 obtains current GPS coordinates of the target vehicle and current rainfall threshold information of the rainfall sensor 1 through a 4G/5G channel, simultaneously obtains real-time weather information (such as third-party weather information 7 provided by a central weather network) of an area where the target vehicle is located through the Internet, simultaneously collects working conditions of the rainfall sensors 1 of other vehicles near the coordinates of the target vehicle, then judges whether the rainfall threshold of the target vehicle needs to be adjusted or not at the cloud, and if yes, sends a rainfall threshold adjustment request signal carrying the target rainfall threshold to the vehicle-mounted 4G/5G device 5 of the target vehicle.

The in-vehicle 4G/5G device 5 transmits the rainfall threshold adjustment request signal to the vehicle body controller 3.

After receiving the rainfall threshold adjustment request signal, the vehicle body controller 3 sends a rainfall threshold adjustment signal to the rainfall sensor 1 according to the received target rainfall threshold, so that the rainfall sensor 1 adjusts the current rainfall threshold according to the rainfall threshold adjustment signal, and after the adjustment is completed, the vehicle body controller 3 feeds back the rainfall threshold of the rainfall sensor 1 to the cloud data platform 6 through the vehicle-mounted 4G/5G device 5.

Referring to fig. 2, the main logical method for adjusting the rainfall threshold using the above system is as follows:

the cloud data platform 6 judges whether to start rainfall sensitivity dynamic adjustment according to the collected vehicle information and the collected environmental weather information, and at the moment, the judgment conditions are as follows: the target vehicle operates & receives the GPS position signal of the target vehicle & receives the rainfall sensitivity of the target vehicle & receives that the first rainfall threshold or the second rainfall threshold calculated from the weather information and the state of the nearby vehicle rainfall sensor 1 is not consistent with the current rainfall threshold of the target vehicle, otherwise it is not turned on.

After receiving the rainfall threshold adjustment request signal forwarded by the vehicle-mounted 4G/5G device 5, the vehicle body controller 3 writes a target rainfall threshold to be adjusted into the rainfall threshold adjustment signal, and then sends the rainfall threshold adjustment signal to the rainfall sensor 1, after the rainfall sensor 1 successfully updates the rainfall threshold based on the rainfall threshold adjustment signal, the information of successful update and the updated rainfall threshold are fed back to the cloud data platform 6, and the dynamic adjustment of the rainfall threshold is completed.

After receiving the rainfall threshold adjustment request signal forwarded by the vehicle-mounted 4G/5G device 5, the vehicle body controller 3 writes a target rainfall threshold to be adjusted into the rainfall threshold adjustment signal, and then sends the rainfall threshold adjustment signal to the rainfall sensor 1, if the rainfall sensor 1 does not update the rainfall threshold, the rainfall threshold is fed back to the vehicle body controller 3, 5 times of updating are repeatedly tried, and after 5 times of updating is exceeded, a signal indicating that the rainfall threshold is unsuccessfully adjusted is sent to the cloud data platform 6, and the dynamic adjustment of the rainfall threshold is completed.

When the target vehicle moves rapidly (the vehicle speed is more than or equal to 40 km/h), the cloud data platform 6 judges once every 15 minutes, and whether the rainfall threshold needs to be updated or not.

When the target vehicle is static or slowly moves (the vehicle speed is less than 40 km/h), the cloud data platform 6 judges once every 60 minutes, and whether the rainfall threshold needs to be updated or not.

Referring to fig. 3, a logical method of the rainfall sensor using the above system is as follows:

the rainfall sensor 1 receives a rainfall threshold adjusting signal sent by the automobile body controller 3, and judges whether to update the rainfall threshold, wherein the judgment conditions are as follows: and if the received target rainfall threshold value is inconsistent with the current rainfall threshold value, the flow is shifted to the next step.

The rainfall sensor 1 judges whether to adjust the rainfall threshold according to the external rainfall signal, and the judgment condition is as follows: and (4) when the received rainfall signal is more than 1min and the current rainfall threshold is less than or equal to 80% (the target rainfall threshold is equal to the first rainfall threshold), judging that the rainfall signal is true, adjusting the rainfall threshold to 80% of the target rainfall threshold, and otherwise, moving to the next step.

The rainfall sensor 1 does not receive an external rainfall signal for a long time, judges whether to adjust a rainfall threshold value or not, and judges the conditions: if the rainfall signal is not received, the duration is more than 30min, the current rainfall threshold is more than or equal to 20 percent (the target rainfall threshold is equal to the second rainfall threshold), and if the judgment is true, the rainfall threshold is adjusted to 20 percent, otherwise, the judgment process is ended.

After the adjustment of the rainfall threshold of the rainfall sensor 1 is completed, the vehicle body controller 3 can control the wiper motor 2 to be started or closed based on the information fed back by the rainfall sensor 1, so that the wiper is wiped.