JPS5929531A - Rear warning system for running vehicle - Google Patents

Abstract

PURPOSE:To exactly ensure the rear warning of a running vehicle by using a system in which the presence or absence of obstacles and the direction and distance of the obstacles can be displayed in a switching manner in a detector to detect obstacles behind the vehicle by sending and receiving supersonic waves. CONSTITUTION:When main power source 4 is closed and a gear is set back, CPU 1 becomes a test mode by the detection output of a gear position sensor S1 and the buzzer and lamp of a warning displayer 2 are operated only for a short period of time to check the normality of the device. When the gear is set back continuously, CPU 1 becomes a detection mode and supersonic wave transmitter- receivers TX1-TX2 and RX1-RX2 become operative states. When reflected waves from obstacles O1-O3 are detected, the buzzer sounds and display lamps are all lighted. When a breake is stepped and the switch of an operating device 3 is pushed, calculation is made by CPU 1 and the distance is displayed with 0.1m units on a direction indication lamp. The rare warning of running vehicle can be exactly ensured.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a solution to prevent obstacles qf when packing a traveling vehicle such as a car.
The present invention relates to a rear δ1 warning system for a running vehicle that detects lI and provides a warning and information regarding obstacles to the driver.

Generally, for example, as shown in FIG.
The ultrasonic waves emitted by the transmitting whistle while sequentially switching channels due to the combination of sending and receiving after installing X\ are an obstacle ◇1
The presence or absence of an obstacle is detected based on whether or not it is reflected by the center 1 or 2 and received, and when the obstacle center 1 or 02 is detected, a warning is given to the driver.
The distance to the obstacle 61 or kl:02- is measured by the time from when the ultrasonic wave is transmitted until it is received by the receiver TXI.

Obstacle υJ or 6 depending on the reception condition of T X 2
In the case of the figure, when the rear of the vehicle is divided into two areas, left and right, the area where the obstacle oit or 02 exists is judged), and the obtained distance and direction are determined. A rear warning system for a running vehicle has been developed that displays information on a display device to provide the driver with information regarding obstacles.

The present invention is directed to such a vehicle, and particularly to a traveling vehicle.
To provide a rear warning system for a traveling vehicle, which can optimally perform rearward syt12 operation according to driving operation when driving.

Hereinafter, one embodiment of the present invention will be described in detail with reference to accompanying drawings.

In the rear warning system for a running vehicle according to the present invention,
As shown in FIG. 2, its basic configuration is an ultrasonic transmitter TXI attached to the rear part of the Φ body.

TX2 and ultrasonic receiver 1'tXl, RX2,
The vehicle's gear is shifted while sequentially switching channels depending on each transmitting and receiving combination. Is there a gear shifter that detects whether or not the position is in the ix position? A brake sensor S2 detects whether the brakes in the city are being applied, and a brake sensor S2 detects whether the vehicle speed is below a certain level (for example, below 2 Q km/h). Once each sensor signal from sensor S3 is received, the reception state of each receiver I'tXl and RX2 is used to detect the presence or absence of an obstacle behind the vehicle, and to determine the distance and direction of the detected obstacle, respectively. A signal processing unit (CPU) that enables centralized control of the entire system, and an alarm display that activates an alarm when an object is detected and displays the distance to and direction of the obstacle. It is comprised of a device 2 and an operating device 3 that turns on the main power source 4 to the system, gives appropriate display commands to the signal processing device 1, and displays the status of the system. In addition, in this embodiment, two ultrasonic transmitters TXI and TX2 and i ultrasonic receivers RXI and RX2 (all of which have the function of amplifying and detecting received waves in order to stabilize received signals and remove noise) are used. ) by appropriately combining υ,
As shown in FIG. 3, each obstacle σ1, 02... fi3'Y can be detected respectively. Further, the alarm display device 2 is
A buzzer, a display, and their drivers are provided inside, and the display surfaces are DI, D2. Direction indicator lamp raccoon consisting of D3, distance to obstacle A in units of 0.1 to 2 (effective figure 2)
It consists of a distance display with a digital digit display and a system operation indicator lamp W. The obstacle detection capability of the system is 11, for example 2, O
m, and obstacles within a range of 1.6 m in the left and right directions can be detected. Further, the warning display device 2 is installed at the rear of the vehicle interior and at a position where the driver can see the display without obstructing the driver's rear field of view when the vehicle is packed. ``The operating device 3 is the main power switch M-8, as shown in Figure 5.
W and display switch D@SW, and alarm lamps Ll and D” that are lit when an obstacle is detected.
It consists of a lamp L2 that lights up when SW' is pressed and a lamp L3 that flashes when there is a system error (
It is installed in the instrument panel of the driver's seat so that the driver can operate switches and check the status of the system. Also, gear shift y+! The vehicle sensor 81 and the brake sensor S2 do not need to be specially designed, and may be one or more so as to output a signal processing device for turning on the puncture lamp (U) and the brake lamp on the vehicle.

In the rear warning system for a running vehicle configured as described above, in the present invention, at 1 o'clock, the t1 information display device is activated in accordance with the driving operation when the vehicle is packed after the main power supply 4 is turned on to the system. ``We will take measures to carry out 2 operational tests and optimal rear warning in stages.''

That is, first, the main power swing of the operating device 3 "M-8"
When the main power supply 4 is turned on to the system and the gear of the vehicle is put into the pack, the signal processing device 1 is activated by the detection output of the gear shift position sensor S1.
enters the test mode and sends a drive command to the buzzer and direction indicator lamps to the alarm display device 2, and for a short time (about 0.8 seconds) the buzzer's IQ jill and all lamps D1.
D2. D3 is turned on and the driver is asked to check whether the t++a display is displayed normally. If the gear becomes flat when the main power source 4 is turned on, the lamp W in the signal processing device Ji-1 signal display device f&2 is turned on to indicate that the system is in operation. Furthermore, when a gear shift is made instantaneously and the gear is shifted into the forward position for about 0.5 seconds, for example, the signal processing device 1 does not respond in any way and prevents the system from operating.

Next, after the test mode is completed, the J-th vehicle's gear continues (at 7, it does not detect that it is in the pack position J11 and enters the obstacle detection mode.Signal processing device 1
sends ultrasonic waves, puts the receiver in the active state 17, receiver RXI
, RXZ are sequentially switched and read, and the presence of an obstacle in each direction is detected by 7 lines of Q((). At the same time, the lights are turned on and the buzzer sounds for a short time (about 0.8 seconds) to provide information to the driver for 7 seconds, but at this time the direction and distance of the obstacle +1i11 still cannot be displayed. ,・R's position shifts from the pack to another position11
When the system is stopped, the lamp W is turned off. When the gear is engaged again, the system will be activated again, but if the gear is shifted to a position other than the pack for less than 10 seconds, it will not respond and test mode will not be executed. There are 7. Further, when no obstacle is detected in the 11M antique detection mode, the project report display device 2 does not operate at all, and its operation indicator lamp W remains lit. Furthermore, this 1
The 1ψ harmful object detection mode is executed without the condition that the vehicle is stopped or in the t11 line state, but if the RI vehicle is moving forward at a constant speed or higher (for example, 20 km/h or higher)
When this is done, the signal processing device 11 forcibly brings the system to a halt according to the output of the vehicle speed sensor S3 at that time.

Next, when the driver performs a brake operation on the vehicle during the obstacle detection mode and presses the operating device ff3, the display switch D-8W indicates that the vehicle is in the braking operation state. and the gears are sharp.

11 (2).
enters the obstacle details K(11 display mode. In that case, the Shin-Yuzo 32T! device 1 displays the 1li( The direction of the old object is judged, and depending on the result, each direction indicator lamp DI, D2゜D3'? in the alarm display device 1γ2 is turned on as appropriate.At the same time, the signal processing device I
Q: After 1 ultrasonic wave is bleached, it reflects from the nearest obstacle and is received (A).
i7i Distance to harmful object υ, cause two lines of digital display of the distance in units of O, 1 m to be displayed on the l+'f 1# display section of the IFl'LJ display device jP7.2. 'Still, I1 is set to 61' by pressing IW in display switch D-8W'ly.
1&The display mode is canceled and the system is stopped.

In addition, ↓ 11 equipment is a self-check of the system.

Drive the RXZ! 0!1 state and each receiver RXI.

■ Increase the sensitivity of ζ When no received signal is obtained from RX2, the lamp L3' in the operating device ff3
, q: Blinks to indicate a system error. At the same time, the IHA processor 1 starts running the computer according to a predetermined system control program, and when an abnormality is detected in the control operation, the lamp L3 blinks to indicate an abnormality in the system.

In addition, in the embodiment shown in FIG. 2, when the rear of the vehicle is divided into a plurality of regions by using two ultrasonic receivers IζXI, IζX2 or by using more than one ultrasonic receiver (iJ), The presence or absence of obstacles in each area is detected by sequentially switching the signal processing device 17, but in the seventh stage, three ultrasonic liquid receivers are used for multiple ultrasonic transmitters. one signal processing device)&, l
In the ultrasonic sending and receiving IF device set @-1, p, the channels are turned off in sequence! It is also possible to detect the presence or absence of an obstacle in the 1llj moxibustion.

As described above, in the rear warning system for a running vehicle according to the present invention, there are four ultrasonic transmitting and receiving channels provided so as to be able to detect obstacles at the rear of the vehicle, and a system that responds to the received signal of the received interference. A signal processing device that detects obstacles and displays information about the obstacles such as distance and direction, and also controls the entire system, and a signal processing device that issues an alarm when an obstacle is detected and displays information about the obstacle. A flash alarm display device and an operating device capable of giving commands to the signal processing device to turn on and off the main power supply and to display information regarding obstacles, and a vehicle's knock signal. means for causing the signal processing device to perform an operation test of the alarm display device by setting the signal processing device in a test mode according to the condition that the pack signal is continuously applied after the completion of the test; Means for causing obstacle detection to be performed in obstacle detection mode; when an obstacle is detected and a brake activation signal is given together with the vehicle's puck signal, or when the puck signal is no longer given, the operation device detects the obstacle. In response to the table ζ command, the signal processing device M is set to the obstacle detailed display mode, and a means is taken to display information about the detected obstacle on the warning display device, so that it can be used when driving the vehicle at 7972 hours. The present invention has an excellent advantage in that it is possible to optimally and reliably carry out rearward warning in accordance with the vehicle's needs without interfering with the operation of the vehicle.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a combination of ultrasonic transmitter and receiver when each obstacle in a region divided into two parts at the rear of a vehicle can be detected, and FIG. A block configuration diagram showing an example of a rear warning system,
Fig. 3 shows the combination of ultrasonic transmitter and receiver when detecting each obstacle when the rear part of the vehicle is divided into three parts, and Fig. 4 shows an example of the configuration of the display surface of the alarm display device of the same embodiment. FIG. 5 is a diagram showing an example of the configuration of the operating device of the same embodiment. l...Signal processing device 2...Alarm display device 3...
・Operation device 4...Main power supply TXl, TX2...Ultrasonic transmitter RXI, RX2...Ultrasonic receiver b1
~b3...Obstacle DI-D3...Direction indicator lamp W...Operation indicator lamp M-8W...Main power switch D-8W...Display switch Applicant's agent Kiyoshi Torii Figure 2 ! Figure 1 Figure 3 Figure 4 Figure 5 A

Claims (1)

[Claims] An ultrasonic transmitter and receiver is installed to detect obstacles behind the vehicle, and the system detects obstacles and calculates information about the obstacles according to the signals received by the receiver. In a rear warning system for a running vehicle that includes a signal processing device that performs overall control and a display device that displays information regarding an obstacle when an obstacle is detected, the display mode of the display device includes:
(+1 Batch display mode that displays only the presence or absence of harmful objects, the direction of detected obstacles and the inside of the building) A rear warning system for a running vehicle, which has the following features: