TWM620042U - Driver-assistance system for providing signal light condition of vehicles - Google Patents

Abstract

A driving assistance system that provides the use status of vehicle signal lights includes a light detector, a storage device and a processor. Among them, the light detector is installed near the signal light to detect the brightness change of the signal light and generate the corresponding light detection signal; the storage device is used to store the light change preset data; the processor is electrically coupled to the light detection The detector and storage device are used to obtain preset state data from the storage device, receive the light detection signal from the light detector, determine whether the change of the light detection signal conforms to the obtained light change preset data, and based on the result of the judgment Determine the content of the auxiliary discrimination signal to be output.

Description

Driver assistance system that provides vehicle signal light usage status

The present invention relates to a driving assistance system, in particular to a driving assistance system that can provide vehicle signal lights.

In the field of autonomous driving or assisted driving, safety detection systems are an indispensable part. Taking a general vehicle as an example, in order to be able to accurately determine the condition of the vehicle and the surrounding environment, the best way is to obtain the information of the trip computer to use as the basis for various judgments of the safety detection system. For example, it is possible to know whether the vehicle is currently in a reversing state based on the reversing light signal obtained from the driving computer information, and then determine whether to automatically activate the object detection mechanism behind the vehicle to increase the safety when reversing.

However, because under normal circumstances, the trip computer information must be obtained through the Controller Area Network bus, so it is equivalent to obtain the trip computer information from a vehicle that does not have a safety detection system installed by default. difficult. The current method used to solve the above difficulties is to use the method of breaking the wire to bridge the signal line of the signal light to obtain the voltage level of the signal line. However, because this method must destroy the original signal line, it is extremely useful. There may be security issues.

In view of this, one of the objectives of the present invention is to provide a driving assistance system that provides the usage status of the vehicle signal light, which can obtain the information of the signal light on and off without using the means of breaking the line.

From one aspect, the description of the present invention proposes a driving assistance system that provides the usage status of vehicle signal lights. The driving assistance system includes a light detector, a storage device, and a processor. Among them, the light detector is installed near the signal light to detect the brightness change of the signal light and generate the corresponding light detection signal; the storage device is used to store the light change preset data; the processor is electrically coupled to the light detection The detector and storage device are used to obtain preset state data from the storage device, receive the light detection signal from the light detector, determine whether the change of the light detection signal conforms to the obtained light change preset data, and based on the result of the judgment Determine the content of the auxiliary discrimination signal to be output.

In one embodiment, the aforementioned light change preset data includes the interval time between the on and off of the signal light.

In one embodiment, the aforementioned light change preset data includes the duration of the signal lamp lighting.

In one embodiment, the aforementioned driving assistance system further includes a wireless transmission device, and the processor is further electrically coupled to the wireless transmission device and outputs the aforementioned auxiliary determination signal via the wireless transmission device.

In one embodiment, the aforementioned driving assistance system makes corresponding driving assistance actions based on the assistance discrimination signal.

By using the above-mentioned technology, the driver assistance system of the present invention that provides vehicle signal light usage status can directly detect the brightness change of the signal light to determine the on and off state of the signal light, so it can be obtained without using the means of breaking the line. The on/off information of the signal light can eliminate the safety problem caused by the broken wire in the prior art.

Please refer to FIG. 1, which is a circuit block diagram of a driving assistance system for providing vehicle signal lights according to an embodiment of the present invention. In this embodiment, the driving assistance system 10 is used to determine the usage status of the signal lamp 15, and it mainly includes a processor 100, a light detector 110 and a storage device 120. In order to correctly detect the usage status of the signal lamp 15, the light detector 110 is set near the signal lamp 15 and its detection sensitivity is adjusted to be able to generate light with different content for the brightness of the signal lamp 15 The state of the detection signal LD, for example, the photodetector 110 can be adjusted so that the light detection signal LD generated when the signal lamp 15 is turned on has a high voltage, and the light detection signal LD generated when the signal lamp 15 is turned off The signal LD has a low voltage.

The processor 100 is electrically coupled to the light detector 110 to receive the light detection signal LD generated by the light detector 110. In addition, the processor 100 is also electrically coupled to the storage device 120 to obtain the light change preset data stored therein from the storage device 120 when needed. Finally, the processor 100 compares the light detection signal LD obtained in a period of time with the light change preset data obtained in advance, thereby determining whether the change of the light detection signal LD in this time period matches the light change. Change the change method set in the default data. In order to ensure that the judgment result of the processor 100 can meet the subsequent use requirements, the light change preset data needs to have different setting contents for different types of signal lamps 15.

For example, when the aforementioned signal light 15 is a direction light used when turning, the light change preset data obtained by the processor 100 may include the interval time between the on and off of the signal light 15 as shown in FIG. 2A. In the embodiment shown in FIG. 2A, the light change preset data includes two square waves with the same period, and the time length of each square wave at high voltage (H) is t ₁ and at low voltage (L) The length of time is t ₂ . Based on the light change preset data provided in FIG. 2A, the processor 100 will confirm _{whether the light detection signal LD within an appropriate time length (2t 1} +2t ₂ ) includes two square waves as shown in FIG. 2A. When the light detection signal LD includes more than two square waves as shown in FIG. 2A, the light detection signal LD is determined by the processor 100 to conform to the change mode set in the light change preset data; on the contrary, if When the light detection signal LD does not include the two square waves shown in FIG. 2A, the light detection signal LD will be judged by the processor 100 as not conforming to the change mode set in the light change preset data.

For the signal lamp 15 that periodically turns on and off during normal operation, such as the direction lamp, the light change preset data used to determine whether the signal lamp 15 is operating normally does not need to be limited to the content described in the above embodiment. . For example, the light change preset data may include three or more square waves; or, in another embodiment, the light change preset data may also include two square waves as shown in FIG. 2A. However, instead of specifying the time length of each square wave at high voltage (H) and low voltage (L), it specifies a specific time length T ₁ , and the processor 100 is confirming that the light detection signal LD is within the time length T 1 When there are more than two square waves, the light detection signal LD is judged to conform to the change mode set in the light change preset data.

Next, referring to FIG. 2B, the light change preset data provided in this embodiment includes a waveform _{maintained at a high voltage (H) for a period of time T 2.} This waveform at the high voltage (H) sustaining time length T ₂ represents the duration of lighting of the signal lamp 15 set in the light change preset data. That is to say, when the light detection signal LD is continuously lit (that is, maintained at a high voltage) for a time longer than the time length T2, the light detection signal LD will be determined by the processor 100 to comply with the light change prediction. Set the change mode set in the data; relatively, when the light detection signal LD is continuously lit for a time period that does not reach the time length T2, the light detection signal LD will be judged by the processor 100 as not conforming to the light change The change method set in the default data. Therefore, the light change preset data shown in FIG. 2B is suitable for judging the usage status of the signal lamp 15 that needs to be continuously lit, such as a reversing lamp, a fog lamp, a brake lamp, or a head lamp.

It should be noted that although the light change preset data is represented in the form of waveform in the above-mentioned embodiment, this is only for the convenience of description and does not indicate that the light change preset data must be stored in the form of waveform.装置120中。 Device 120. As long as it can be interpreted as any type of data for comparison between the processor 100 and the change of the light detection signal LD by using the existing technology, it can be stored in the storage device 120 for preparation to be provided to the processor 100 Light changes preset data.

Please refer to Figure 1 again. After judging whether the light detection signal LD conforms to the change mode set in the light change preset data through the above or other methods, the processor 100 can determine the content of the output auxiliary judgment signal R according to the result of the judgment. In this embodiment, when the result of the determination by the processor 100 is that the light detection signal LD conforms to the change mode set in the light change preset data, the content of the auxiliary determination signal R indicates that the corresponding signal lamp 15 is in the operating state ; In contrast, when the processor 100 determines that the light detection signal LD does not conform to the change mode set in the light change preset data, the content of the auxiliary determination signal R indicates that the corresponding signal lamp 15 is not in operation . Therefore, the auxiliary discrimination signal R can be directly output to other devices in the driving assistance system 10 for subsequent use; or, the auxiliary discrimination signal R can also be transmitted to other systems outside the driving assistance system 10 through the data transmission interface 130 (For example, automatic driving system or safety discrimination system) or device for subsequent use. In different embodiments, the data transmission interface 130 may include at least one of a wireless transmission device 132 and a wired signal transmission interface 134, and the processor 100 may use the wireless transmission device 132 for wireless signal transmission or wired signal transmission, respectively. The interface 134 and matching wires are used for wired signal transmission. Although only one light detector 110 and one signal light 15 are shown in FIG. 1, in one embodiment, a plurality of different signal lights 15 (such as turning direction lights, reversing lights, brake lights, etc.) may be separately shown. Corresponding multiple photodetectors 110 are provided, and the processor 100 can output corresponding multiple auxiliary discrimination signals R according to the photodetection signals LD generated by the photodetectors 110 respectively. The driving assistance system 10 or other systems (such as an automatic driving system or a safety discrimination system) can further make corresponding driving assistance actions according to the auxiliary discrimination signal R. For example, when the content of the auxiliary discrimination signal R indicates that the right turn indicator is in In the operating state, the driving assistance system 10 or other systems can display the right side image of the vehicle on the display (not shown), activate the right side radar of the vehicle (not shown), or emit a warning sound; when the auxiliary discrimination signal R is The content indicates that when the reversing light is in operation, the driving assistance system 10 or other systems can display an image of the rear side of the vehicle on the display, activate the rear side radar of the vehicle (not shown), or emit a warning sound.

According to the above description, the driving assistance system of the present invention that provides vehicle signal lights uses directly detects the brightness changes of the signal lights to determine the status of the signal lights, so the signal lights can be obtained without the use of broken wires. The bright and extinguished information can eliminate the security problems caused by the broken line of the existing technology.

10: Driving assistance system 15: Signal light 100: processor 110: Light detector 120: storage device 130: Data Transmission Interface 132: wireless transmission device 134: Wired signal transmission interface H: high voltage L: Low voltage LD: light detection signal R: auxiliary discrimination signal T1, T2, t1, t2: length of time

FIG. 1 is a circuit block diagram of a driving assistance system for providing vehicle signal lights using conditions according to an embodiment of the present invention. 2A is a schematic diagram of light change preset data according to an embodiment of the present invention. 2B is a schematic diagram of light change preset data according to an embodiment of the present invention.

10: Driving assistance system

15: Signal light

100: processor

110: Light detector

120: storage device

130: Data Transmission Interface

132: wireless transmission device

134: Wired signal transmission interface

LD: light detection signal

R: auxiliary discrimination signal

Claims (5)

A driving assistance system that provides the usage status of a signal light of a vehicle is suitable for detecting the on and off state of a signal light installed on the vehicle. The driving assistance system is characterized by including: A light detector installed near the signal light to detect the brightness change of the signal light and generate a corresponding light detection signal; A storage device to store a light change preset data; and A processor electrically coupled to the light detector and the storage device, the processor obtains the preset state data from the storage device, receives the light detection signal from the light detector, and determines the light detection Whether the change of the measured signal conforms to the light change preset data, and the content of an auxiliary judgment signal to be output is determined according to the result of the judgment. The driving assistance system according to claim 1, wherein the light change preset data includes the interval time between the on and off of the signal light. The driving assistance system according to claim 1, wherein the light change preset data includes the duration of lighting of the signal lamp. The driving assistance system according to claim 1, further comprising a wireless transmission device, and the processor is electrically coupled to the wireless transmission device and outputs the auxiliary determination signal via the wireless transmission device. The driving assistance system according to claim 1, wherein the driving assistance system makes corresponding driving assistance actions according to the assistance discrimination signal.

Images