CN101407193A - Anticollision alarming device for vehicle - Google Patents

Abstract

The invention discloses an anti-collision alarm device for a vehicle, which comprises a shell provided with a control panel and a central processor arranged in the shell. The central processor is respectively connected with a GPRS module, a GPS module, a data storage chip, and also connected with a range radar, a camera, an anti-collision sensor, a vehicle speed sensor and a sound box. The control panel is provided with buttons for selecting road conditions, driver age group and vehicle model, and also can be provided with a display screen. The sound box is externally connected with an independent sound box or connected with a self acoustics system in the vehicle. The anti-collision alarm device has the advantages that the anti-collision alarm device combines each parameter of a factor affecting running safety distance to carry out analysis by synthesis according to distance data of a front object measured by the onboard radar, obtains more scientific and accurate running safety distance, mildly and effectively reminds a driver to notice through two-level prompt modes of distance early warning and distance warning, can well prevent the vehicles from colliding, and ensures running safety.

Description

Anticollision alarming device for vehicle

Technical field

The present invention relates to a kind of warning, in particular, the present invention relates to a kind of anticollision alarming device for vehicle.

Background technology

At present, the road conditions of China is constantly perfect, and the average ground speed of vehicle also promotes day by day.Accordingly, people also more and more pay attention to the safety problem of running car, especially under the state of running at high speed, people generally only depend on the personal experience to judge that stopping distance under the current vehicle speed keeps the spacing with front truck, but often because a variety of causes makes people produce false judgment, particularly under situations such as new hand's driving, fatigue state, the state of diverting one's attention, furious driving, the probability that produces false judgment is higher.So, determine and the rational spacing of maintenance, be the best Active Defending System Against that avoids traffic accident, also be the important assurance of traffic safety.

Determine and the purpose that keeps reasonable spacing in order to reach, in recent years, various vehicles is crashproof, range only radar etc. occurs in succession, their common feature is to judge whether to need to report to the police or braking with distance or the relative velocity of surveying between objects in front and the automobile between automobile and object, and has ignored the driver to the speed of response of accident and the consideration of current driving situation and road surface situation.Therefore, judge, exist bigger rate of false alarm, and bigger rate of false alarm is with heavy damage vehicle driver and passenger's traveling comfort and awareness of safety though they can help people to carry out spacing to a certain extent.

In addition, collision warning is a prelude of carrying out salvage work after accident takes place, and also being in time provides the scene of collision case so that the effective means of quick rescue to the remote call center.In order to reach this purpose, dissimilar collision warning equipments has also appearred in recent years, and their common feature is passive real-time collision detection signal, if detect collision alarm then provide alarm to a distant place, to reach the purpose of quick rescue.But this kind equipment has been ignored the current state in the vehicle ' equally, so that produce a large amount of wrong reports that collision when static, the scratching under the little speed, the vibrations under at a high speed and sudden stop etc. need not the situation of rescuing, greatly reduce the work efficiency of the side of suing and labouring.

Summary of the invention

Problem to be solved by this invention overcomes above the deficiencies in the prior art exactly, provide a kind of can be by " apart from early warning " and " distance alarm " two-stage prompting mode gentleness the actv. anticollision alarming device for vehicle of reminding the driver to note.

Technical scheme of the present invention is:

A kind of anticollision alarming device for vehicle, comprise the shell that is provided with control panel, be provided with central process unit in the described shell, described central process unit connect respectively setting in the enclosure be used for GPRS module to distant place data center active upload alarm message and location information, be used to gather the GPS module of the detailed coordinate information of accident site, be used for the pin-saving chip of data message after the stores processor and the external range only radar that is used for detection vehicle and preceding object distance, be used for camera that the place ahead situation is made a video recording, the car speed sensor that is used for the collection vehicle current vehicle speed, described central process unit also connect and are used to detect the crash sensor of vehicle collision signal and are used to the user that the audio amplifier of voice suggestion is provided.

Described central process unit is micro controller system or Programmable Logic Controller.

Described crash sensor is acceleration pick-up or vibration sensor.

Described crash sensor is arranged in the described shell or picks out described shell.

Described car speed sensor is a hall sensor.

Button on the described control panel is respectively applied for selects road surface situation, driver's age bracket and vehicle.

Described control panel is provided with read-out.

Described audio amplifier is external independent audio amplifier or connects in the car self sound system.

Described central process unit can be selected connection or connect vehicle fuel supply control simultaneously and brake control.

Anticollision alarming device for vehicle of the present invention, compared with prior art, its beneficial effect is: the objects in front range data of using range only radar to measure, carry out comprehensive analyses in conjunction with the relative velocity of the speed of a motor vehicle of current driving and objects in front, different road environments, different vehicles, the different every parameters that influence the safety driving distance factor such as speed of response of chaufeur of all ages and classes section, obtain more science and safety driving distance accurately, thereby effectively reduce rate of false alarm.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a module map of the present invention;

Fig. 3 is a workflow diagram of the present invention.

The specific embodiment

As Fig. 1, shown in Figure 2, anticollision alarming device for vehicle of the present invention, comprise the shell 1 that is provided with control panel 2, be provided with the central process unit that is used for data handing in the described shell 1, described central process unit connects and is used for to distant place data center active upload alarm message and location information GPRS module, be used to gather the detailed coordinate information GPS module of accident site, be used to store the pin-saving chip of the data message after central process unit is handled, the range only radar 4 that is used for the distance of detection vehicle and preceding object, be used for camera 5 that the place ahead situation is made a video recording, and the crash sensor 6 that is used to detect vehicle collision signal, be used for the car speed sensor 7 of collection vehicle current vehicle speed and be used to the user that the audio amplifier 8 of voice suggestion is provided.Described GPRS module, GPS module, pin-saving chip are arranged in the shell 1, and described range only radar 4, camera 5, car speed sensor 7 and audio amplifier 8 are arranged on outside the shell 1.Described crash sensor 6 can be arranged in the described shell 1 or pick out described shell 1.

Central process unit wherein can be micro controller system or Programmable Logic Controller.

Crash sensor 6 wherein can be acceleration pick-up or vibration sensor.

Car speed sensor 7 wherein is a hall sensor.

Wherein the button on the control panel 2 comprises 4 buttons that are used to select the road surface situation, is used to 3 buttons selecting 3 buttons of driver's age bracket and be used to select vehicle.

Can be provided for man-machine communication's read-out 3 on the described control panel 2.

Described audio amplifier 8 can external independent audio amplifier or is connected self sound system in the car.

As shown in Figure 3, the workflow of anticollision alarming device for vehicle of the present invention is:

(1) user selects underlying parameter by panel button

1-1: select road surface situation (drying: u=0.8; Moist: u=0.5; Ponding: u=0.3; Freezing: u=0.1)

1-2: select driver's age bracket (18～30 years old: i=0.5; 30～50 years old: i=1.0; More than 50: i=1.5)

1-3: select vehicle (small passenger car: Q=0.65; Medium bus: Q=0.75; Bus/bulk production: Q=0.9)

(2) procedure basis calculates

Set constant M=1.2 (second), g=9.8

S＝(V₁²/2ug+(i+M)*V₁)*Q

(3) obtain current vehicle speed by car speed sensor

Obtain current car vehicle velocity V by the vehicle speed sensor₁(meter per second).

(4) program start is judged

Work as V₁During＜11 meter per seconds (40Km/H), return (3)

Work as V₁During＞11 meter per seconds (40Km/H), enter " basic data measurement ".

(5) basic data is measured

5-1: the current distance that obtains preceding object by range only radar 4 in real time: S₁(rice), interval T₁Obtain and preceding object distance S after second₂(rice), interval T again₁Time obtains and preceding object distance S₃(rice).

5-2: obtain current car speed per hour V by car speed sensor 7₁(meter per second).

Work as S₃Enter " prompting and data acquisition program " during＜S and enter " synthetical restraint is apart from judging ".

(6) synthetical restraint is apart from judgement

Object relative velocity before 6-1 calculates

Extract preceding two basic data point: S₁, S₂And current data S₃

Relative velocity V₂=(S₂-S₁)/T₁

Relative velocity V₃=(S₃-S₂)/T₁

Object absolute velocitye and preceding object stopping distance before 6-2 calculates

Preceding object absolute velocitye V_t=V₁+ V₃

Preceding object stopping distance S_t=(V_t²/ 2ug+1.2*V_t) * 0.75

6-3 judges flow process

If S₃+ S_t＜S opens crash sensor 6 collision detection signals, opens GPS and GPRS module, changes " distance alarm program " over to.

If S₃+ S_t＞S enters " relative velocity judgement ".

(7) relative velocity is judged

If V₃＞V₂, change (5) over to and carry out " basic data measurement ".

If V₃＜V₂, enter " apart from early warning " program, open crash sensor 6 collision detection signals, change (5) over to after unlatching GPS and the GPRS module and carry out " basic data measurement "

(8) apart from early warning

8-1 writes down the current time, and control camera 5 is made a video recording, and gathers current vehicle speed by car speed sensor 7, calculates this car acceleration/accel.

8-2 carries out brief auditory tone cues by audio amplifier 8.As: drip sound etc.

(9) distance alarm program

9-1 writes down the current time, and control camera 5 is made a video recording, and gathers current vehicle speed by car speed sensor 7, calculates this car acceleration/accel.

9-2 plays rapid alarm sound by audio amplifier 8.For more safe and reliable,, can in program, select adding or add vehicle fuel supply control simultaneously and brake control as expansion of the present invention.

9-3 opens central process unit interrupt handling flow process, inserts for crash sensor 6 provides signal.

9-4 audio amplifier 8 is play more rapid alarm sound.

If 9-5 crash sensor 6 produces alerting signal, change " collision handler " over to.

(10) collision handler

Control GPS module is worked, and obtains the location information of current vehicle, and by the GPRS module vehicle position information is uploaded to data center, and data center produces alarm.

Because itself float value of safety distance and be to float in real time, the different speed of a motor vehicle, different relative velocities, different road environments, different vehicles, the chaufeur of all ages and classes section all have different safety distances, as: safety distance is all different under these situations of speed per hour 100Km/h and 50Km/h or 80Km/h, youngster and the elderly are because speed of response different also different, and existing various crashproof, range only radar can only relatively simply produce to spacing or to relative velocity and reports to the police, so, rate of false alarm is bigger, and result of use is undesirable.

The present invention is then according to objects in front distance that vehicle-mounted range only radar detected, COMPREHENSIVE CALCULATING about under the different speed of a motor vehicle, different relative velocities, different road environments, different vehicles, every parameter that influences the safety driving distance factor of all ages and classes section chaufeur, thereby draw the safe space between motorcars of science more, and provide two-stage distance prompt mode by the driver in non-safe space between motorcars, effectively gentle more.

The present invention only works under non-safety distance by active spacing warning control vehicle crash sensor, and gathers the collision alarm that exists under the safety traffic hidden danger situation.If detect collision alarm then the alarm message and the detailed coordinate information of the GPS spot that module is collected be provided to the relevant rescue department in a distant place by the GPRS module.This kind collision warning mode has effectively been filtered the wrong report under the non-dangerous situation, has strengthened the warning reliability, effectively improves call center's work efficiency.

May command camera of the present invention is made a video recording to the place ahead situation after vehicle take-offs, and with current toy vehicle velocity value, with objects in front relative velocity, objects in front absolute velocity values, car before the shooting fragments store for ex-post analysis.

The advantage of anticollision alarming device for vehicle of the present invention is:

(1) can be and initiatively report to the police in the car or take active defensive measure such as braking that foundation is provided.Control vehicle-mounted pick-up head is made a video recording to the vehicle front situation when vehicle moves.And monitor vehicle under non-safety distance with current toy vehicle velocity value, with objects in front relative velocity, objects in front absolute velocity values together with car before the shooting fragments store for ex-post analysis.

(2) equipment will initiatively be opened crash sensor in non-safe space between motorcars, if detect the collision warning signal then be judged as collision case.After being judged as collision case by GPS and GPRS module to distant place data center active upload alarm message and location information.

(3) the single mode of operation of original range only radar of breakthrough and proximity warner, fully in conjunction with current driving situation, computationally secure distance and more effective control prompt facility, collision warning equipment and doubtful point data acquisition equipment more accurately, for the car owner provides warning in advance, warning afterwards, a whole set of mode of data acquisition, the effect of take the initiative the defence prompting and the accident remote alarms of intelligence more in advance.

Below with embodiment the present invention is schematically described in conjunction with the accompanying drawings, this describes useless restricted.Need to prove that especially in the manufacturing process of product, the layout of each parts and set-up mode all some changes might take place, and others skilled in the art also might make similar Design under enlightenment of the present invention.Therefore, only otherwise break away from design aim of the present invention, aforesaid any change and similar Design all should be included within protection scope of the present invention.

Claims (10)

1. anticollision alarming device for vehicle, its formation comprises the shell that is provided with control panel, be provided with central process unit in the described shell, it is characterized in that, described central process unit connect respectively setting in the enclosure be used for GPRS module to distant place data center active upload alarm message and location information, be used to gather the GPS module of the detailed coordinate information of accident site, be used for the pin-saving chip of data message after the stores processor and the external range only radar that is used for detection vehicle and preceding object distance, be used for camera that the place ahead situation is made a video recording, the car speed sensor that is used for the collection vehicle current vehicle speed, described central process unit also connect and are used to detect the crash sensor of vehicle collision signal and are used to the user that the audio amplifier of voice suggestion is provided.

2. anticollision alarming device for vehicle according to claim 1 is characterized in that, described central process unit is micro controller system or Programmable Logic Controller.

3. anticollision alarming device for vehicle according to claim 1 is characterized in that, described crash sensor is acceleration pick-up or vibration sensor.

4. anticollision alarming device for vehicle according to claim 1 is characterized in that, described crash sensor is arranged in the described shell or picks out described shell.

5. anticollision alarming device for vehicle according to claim 1 is characterized in that, described car speed sensor is a hall sensor.

6. anticollision alarming device for vehicle according to claim 1 is characterized in that described control panel is provided with a plurality of buttons, and described button is respectively applied for selects road surface situation, driver's age bracket and vehicle.

7. anticollision alarming device for vehicle according to claim 1 is characterized in that described control panel is provided with read-out.

8. anticollision alarming device for vehicle according to claim 1 is characterized in that, described audio amplifier is external independent audio amplifier or connects in the car self sound system.

9. anticollision alarming device for vehicle according to claim 1 is characterized in that, described central process unit connects vehicle fuel supply control or brake control.

10. anticollision alarming device for vehicle according to claim 1 is characterized in that, described central process unit connects vehicle fuel supply control and brake control.

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