CN102968910A

CN102968910A - Preventing car chain collision warning system (PCCCWS)

Info

Publication number: CN102968910A
Application number: CN2012102221480A
Authority: CN
Inventors: 蓝海
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-29
Filing date: 2012-06-29
Publication date: 2013-03-13

Abstract

A brand new preventing car chain collision warning system (PCCCWS) is composed of an alarm and a receiver with a buzzer. The PCCCWS totally occupies three cubic centimeters and can be placed in a steering wheel of an automobile. When severe collision accidents occur to the automobile, a sensor of a supplementary restraint system (SRS) can give out alarming trigger instructions when giving out air sac expansion instructions. Encryption signals emitted by the alarm are received by receivers of automobiles provided with the same alarms and positioned in the preset range, and then the buzzer in the steering wheel is driven to give out alarming voice. The automobiles adopt measures like speed reduction simultaneously, and car chain collision can be effectively prevented.

Description

Anti-a chain of collision warning system (PCCCWS)

One. affiliated technical field

When highway particularly occurs to collide because of reasons such as dense fog low visibility on the highway, often can not in time discover and take measures because of the back vehicle and knock into the back one after another, cause the serious chain of rings to be collided, sometimes reach up to a hundred, often cause huge casualties and economic loss, the developed countries such as America and Europe also can not escape by luck.Collision is inevitably, but a chain of the collision is fully avoidable.The anti-a chain of collision warning system that the below will introduce (English name Preventing car chain collision warning system) is called for short PCCCWS, it can send wireless alarm signal in the moment of seriously colliding and the triggering air bag is opened, after the receiver that vehicle is installed near the 150-200 rice is received signal, can send alerting signal to the driver, each car slows down simultaneously, can substantially avoid a chain of and collide.

Two. background technology

Through looking into, there is no at present this kind both at home and abroad and triggered by vehicle-mounted SRS, point-to-points, the fixing anti-a chain of collision warning system of alarm range.

Three. summary of the invention

1. the emission of alerting signal:

The PCCCWS of list section automobile forms by alarm with the receiver of hummer, and the two volume that integrates is: 30mm*20mm*5mm, so can place in the control wheel, with air bag with powering with vehicle-mounted DC12V storage battery.During serious the collision, alarm command is triggered by pair of contact by the sensing controler of SRS (air bag system), wireless alarm signal adopts 315MHz or the civilian channel of 433MHz to launch the scrambled digital signal of 9600 byte per seconds, by regulating emissive power and receiving sensitivity, will receive radius and be controlled in the 150-200 rice scope.

2. the reception of alerting signal and warning effect:

After the receiver that each car of identical PCCCWS is housed in this accident scope is received alerting signal, namely sending rapid warning beep sound by hummer reminds the driver that deceleration (and can be sent audio alert by vehicle audio, also can start as required loudspeaker pipes, the car light flicker, GPS reports to the police until forced brake slows down).Each car slows down simultaneously, can substantially avoid a chain of collision, can become other to intensive fiercely knocking into the back at least and slightly knock into the back, thereby greatly alleviate the loss of lives and properties and accident to the impact of traffic.

3. " co-channel interference " problem and solution:

Except knocking because of bicycle fixed obstacle or overturning etc. cause air bag action and report to the police, more be the head-on collisions of two cars, the accident such as knock into the back.This moment, accident occurred in pairs, and two cars simultaneously send same signal with same frequency, and binary signal will interfere with each other and cause the signal abortive launch and cause failing to report.Our solution is by delay technique, allows each car signal not send simultaneously.Concrete scheme is: divide into groups when producing alarm, every group of n platform, the emission delay time of group Nei Getai is respectively: 1t, 2t, 3t.....nt wherein n is made as 1000 temporarily, t is made as 1 millisecond temporarily, the x time of each alarm is respectively 1 millisecond that receives after the trigger pip in the group like this, 2 milliseconds ... last is 1 second for ...Each group must be sold to different areas.Like this, car to car impact, of delaying time few namely can " try to be the first " signal is launched successfully warning.Even just in case the car of identical time-delay has by chance knocked (this probability only has 1/2000th) in two groups of cars, the 3rd car that participates in collision also can send out alerting signal.

4. the feasibility of system, reliability and security:

On feasibility, this system works frequency national uses frequency range, meets the provisions of the relevant regulations issued by the State; This alarm volume only is 3 cubic centimetres, can be installed in the control wheel easily, and price is also very cheap, and about 1% of SRS is only arranged.As long as the installation rate of 20-30% is arranged, can bring into play sizable effect, the installation rate is higher, acts on larger!

On reliability, report to the police to adopt the scrambled digital signal of per second 9600 bytes, and effectively solved problem of co-channel interference, can be subject to other interference more hardly and form and fail to report; Moreover the hummer in the control wheel, makes a noise in the car less than 0.5 meter from driver's ear again, and the driver can not can't hear yet; On the other hand, the trigger source of this system is air bag, can extremely lack in (the shortest several milliseconds, the longest about the 1 second) time after collision occurs signal is sent; And run into the minor accident that need not report to the police, and even scrape or slight impact, as long as its acceleration does not surpass the threshold value that SRS sets, air bag just can not be opened, alarm also can not move, thereby has avoided false declaration.

In security, this kind multidigit enciphered digital alerting signal extremely difficulty copies, and the layman can't crack and launch, and after next step embeds the integrated production of sensing controler of SRS system with alarm, anti-destructive also will further strengthen.

5. the spinoff of system

Because the emission of alerting signal does not have directivity, all vehicles that this system has been installed all can be received alerting signal and make the reactions such as deceleration in the alarm set point 150-200 rice radius, here can comprise some irrelevant vehicles, but this is inevitably, also can not cause much impacts to traffic.

Four. description of drawings

Accompanying drawing is " PCCCWS (anti-a chain of collision warning system) schematic diagram ".

Five. embodiment

The usefulness of anti-chain collision truck system depends on the popularity rate that it is installed at domestic car and imported car to a great extent.Therefore, advise that relevant department pays close attention to, detection, test progressively makes its standardization and standardization also actively promote: the one, popularization is installed additional on probation in existing vehicle; The 2nd, style of writing embeds with this warning system that the SRS system produces to each air bag manufacturer and as requisite parts wherein; The 3rd, the regulation auto producer must adopt the SRS system with warning system; The 4th, promote the use of in the whole world by all means, this needs the long period certainly, but this system cost only is one of percentage of SRS, and install simple.As long as there is the car of some that native system has been installed, its usefulness can be brought into play to a certain extent day by day, the place of Here it is its feasibility and vitality.

Claims

1. not to use intercom, the point-to-point mode such as mobile phone, but by the upper radio component parts of installing of car (or other vehicles), mode with one-to-many, with hand push button or other device trigger, the diffuse information mode of (inform dangerous etc.) of a large amount of vehicles (or other vehicles) in predetermined radius.

2. alarm is take the sensor of safe automobile air bag (SRS) as the warning trigger source and embed SRS as its parts, to improve promptness, reliability and the security of reporting to the police.

3. the settling mode of " co-channel interference ": adopt delay technique to set respectively the x time of each wireless transmit equipment, timesharing emission, " co-channel interference " problem when being triggered simultaneously to solve two above equipment.In this example, it is so that when two cars " head-on collision ", report to the police and still can realize.