JPS6153250B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a vehicle that increases the driver's level of consciousness by requesting a response from the driver when driving in an environment where the driver's level of consciousness may decrease. related to a warning device for use.

[Conventional technology]

Conventional vehicle warning systems require the driver to respond after a certain amount of driving time or a certain distance traveled, and if there is no response, it determines that the driver's level of consciousness has declined and issues an alarm. , there are things that apply braking. Alternatively, some systems detect monotonous road conditions that reduce the driver's alertness and issue a warning.

[Problem that the invention seeks to solve]

However, according to conventional warning devices, a response is required every certain driving time or every certain distance traveled, so for example, if the driver is frequently driving and the driver's level of consciousness decreases. When you don't do it, it can feel like a nuisance, and
There was a risk that the driver would not be able to concentrate on driving when performing frequent driving operations. Or, is the detection of monotonous road conditions also due to monotonous driving operations by the driver?
It is difficult to determine whether the road conditions are actually monotonous, and as mentioned above, the system also issues a warning even when the driving operation is monotonous, which is a nuisance.

[Means and actions for solving problems]

The present invention has been made in view of the above,
When driving in an environment where the driver's level of consciousness may decline, the system accurately detects the monotony of road conditions without considering monotonous driving caused by driving operations, and reduces the annoyance of the driver. In order to obtain a response without giving any input, we briefly explained that we were in the above environment because the steering operation exceeding a predetermined steering angle was performed over multiple predetermined driving sections in which the frequency was less than the predetermined frequency. The object of the present invention is to provide a vehicle alarm device that detects and requests a response using a configuration.

〔Example〕

The vehicle warning device according to the present invention will be explained in detail below.

FIG. 1 shows a first embodiment of the present invention, which includes a steering angle sensor 1 that outputs a pulse 1a when the steering angle of the steering operation exceeds a predetermined steering angle, and a steering angle sensor 1 that inputs the pulse 1a to a counting terminal. It is reset by the clock signal 3a of the clock pulse oscillator 3, and when the counted value exceeds the first set value, the first operating signal 2a is output, and when the counted value exceeds the second set value, the second operating signal 2b is output. Counter 2 to output and the first
AND circuits 4 and 5 which input the operating signal 2a and the clock signal 3a, the second operating signal 2b and the clock signal 3a, respectively, an inverter 6 which reverses the output 4a of the AND circuit 4, and the clock signal 3a and the inverter signal 6a. Input monotone operation signal 7a
An AND circuit 7 that outputs , and a monotonous operation signal 7a are input and integrated, and when the integrated value 8a reaches a predetermined value, a response request signal 8b is output, and the output 5a of the AND circuit 5 or the response request signal 8b is ORed. circuit 9
a counter 8 which is reset by input via the
It has a device 10 for inputting a response request signal 8b and requesting a response by means of a lap, buzzer, etc.

In the above configuration, the operation will be explained using the time chart shown in FIG. 2 as follows.
The clock pulse oscillator 3 outputs a clock signal 3a at fixed time intervals, which is a unit measurement interval (the unit measurement interval can also be a distance instead of time), and the counter 2 outputs a clock signal 3a at regular intervals, which is a unit measurement interval. The signal 1a is counted and the first and second driving signals 2a and 2b are outputted according to the travel in the first driving zone and the second driving zone. Here, FIG. 3 shows the average number of pulses 1a output from the steering angle sensor 1 when the steering angle is set to 10 degrees and 20 degrees. Curves A, B, and C are the average number of steering pulse signals when driving on a suburban road, a curved section of an expressway, and a straight section of an expressway, respectively. Even when doing this, the number of pulses increases. Therefore, by counting the pulses 1a, it is possible to know what kind of driving environment the vehicle is traveling in. The first driving zone described above is a normal driving zone that requires normal steering operations, and the second driving zone is a driving zone that requires frequent steering operations. The first and second operation signals 2a and 2b of the counter 2 are supplied to AND circuits 4 and 5.
When an AND condition is established between the clock signal 3a and the clock signal 3a, pulses 4a and 5a are output. Inverter signal 6a of pulse 4a is clock signal 3
When the AND condition is satisfied with a, in other words, when driving in a monotonous driving section where the steering pulse 1a does not reach the first set value,
AND circuit 7 outputs monotonous operation signal 7a. The monotonous operation signal 7a is integrated by a counter 8, and when the integrated value 8a reaches a predetermined value _VR , a response request signal 8b is output and the response request device 10 is activated. The counter 8 is reset by a response request signal 8b or a pulse signal 5a indicating that the vehicle is in a driving section where frequent steering operations are required. In addition, in the counter 8, the first operation section 4
The counted values of the monotonous driving section and the normal driving section may be offset by inputting and subtracting a. In addition, in the above embodiment, the operation is classified into monotonous, first and second operating sections, but in order to simplify the circuit configuration and reduce costs, this is divided into two sections: monotonous operating section and non-monotonic operating section. It can also be divided into categories.

〔Effect of the invention〕

As explained above, according to the vehicle warning device according to the present invention, since the steering operation exceeding the predetermined steering angle is performed over a plurality of predetermined driving sections in which the frequency is less than the predetermined frequency, By using a simple configuration to detect the environment and request a response, it is possible to avoid monotonous driving caused by driving operations when driving in an environment where the driver's level of consciousness may decrease. , it is possible to accurately detect that the road condition is monotonous and request a response without bothering the driver.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a first embodiment of the present invention,
Figure 2 is the time chart of Figure 1. FIG. 3 is an explanatory diagram showing the number of steering operation pulses output according to a predetermined steering angle. Explanation of symbols 1...Steering sensor, 2...Counter, 3...Clock pulse oscillator, 8...Counter, 10...Response request device.

Claims (1)

[Claims] 1. A circuit that outputs a steering pulse signal when the steering angle changes by more than a predetermined angle; and a circuit that counts the steering pulse signals output in a predetermined unit measurement interval and outputs a driving signal. comprising a counter, and a circuit that outputs a monotonous operation signal when the count value of the operation signal is less than or equal to a predetermined value, and the monotonous operation signal that the steering pulse signal is less than or equal to a predetermined frequency in the unit measurement interval; and a response signal device that cumulatively calculates the count value by performing the output over a plurality of predetermined unit measurement intervals, and outputs a response request signal when the count value is equal to or greater than the predetermined value. A vehicle warning device characterized by: 2. The vehicle alarm device according to claim 1, wherein the counter counts the steering pulse signal at predetermined intervals. 3. The vehicle alarm device according to claim 1, wherein the counter counts the steering pulse signal every predetermined travel distance.