CN104608689A - Environmental detection system for motor vehicle at low speed - Google Patents
Environmental detection system for motor vehicle at low speed Download PDFInfo
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- CN104608689A CN104608689A CN201410816192.3A CN201410816192A CN104608689A CN 104608689 A CN104608689 A CN 104608689A CN 201410816192 A CN201410816192 A CN 201410816192A CN 104608689 A CN104608689 A CN 104608689A
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- ultrasonic
- ultrasonic wave
- signal
- low speed
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Abstract
Provided is an environmental detection system for a motor vehicle at a low speed. The environmental detection system for the motor vehicle at the low speed comprises a plurality of ultrasonic wave launch devices fixed on the edge of the bottom of an automobile and lower positions of headlights respectively, and the an ultrasonic signal is launched while driving the automobile; a plurality of ultrasonic wave receiving devices, and the number of the ultrasonic wave receiving devices is equal to the number of the ultrasonic wave launch devices, the ultrasonic wave receiving devices are each arranged near a corresponding ultrasonic wave launch device one by one, when an ultrasonic signal launched by the ultrasonic wave launch devices meets an obstacle and turns back, and the corresponding ultrasonic wave receiving devices receive the signal which turns back; a single-chip computer processes a received signal from the ultrasonic wave receiving devices, compared with a signal from previous time, if a variation of a waveform of the received signal from a certain time exceeds a predetermined threshold value, and an abnormal situation is determined; an alarm apparatus connected with the single-chip computer, when the abnormal situation is determined, and the single-chip computer controls and raises an alarm. The environment detection system for the motor vehicle at the low speed can detect whether an object exists or not when a walker or other obvious obstacles come close to the vehicle and a driver can not see.
Description
Technical field
The invention belongs to monitoring technique field, particularly the environmental detecting system of a kind of self-propelled vehicle when low speed.
Background technology
Driving at present to go on a journey is the mode of going out of most people first-selection, because how crowded car is, the accident of automobile collision casualty accident or automobile clobber occurs sometimes, and therefore traffic department has formulated a series of law and carrys out specification driver driving.But some situation be driver because visual angle or obstacle too small and cause collision, even some people utilizes these laws deliberately to manufacture " touching porcelain " namely to manufacture driver and thrust into the illusion of hurting sb.'s feelings to obtain great number Compensatory Payment, may secondary injury be caused to pedestrian due to the ignorant of driver and cause the phenomenon of injured death, both people was damaged, also tremendous influence was caused to the driver of an innocent person.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide the environmental detecting system of a kind of self-propelled vehicle when low speed, can when driver cannot see near vehicle for pedestrian or other obvious obstacles, detect and whether have object to exist, and notify that driver makes a response, have the advantages that structure is simple, preventive effect is good.
To achieve these goals, the technical solution used in the present invention is:
The environmental detecting system of self-propelled vehicle when low speed, comprising:
Ultrasonic transmission device 1, has several, is fixedly installed in bottom margin place and the head lamp lower position of automobile respectively, launches ultrasonic signal when running car;
Ultrasonic probe, ultrasonic receiver 2, consistent with the quantity of described ultrasonic transmission device 1, correspondence is faced and is installed by a ultrasonic transmission device 1 one by one, when the ultrasonic signal that a ultrasonic transmission device 1 is launched run into obstacle turn back time, corresponding ultrasonic probe, ultrasonic receiver 2 receives this signal of turning back back;
One chip microcomputer 3, processes the Received signal strength from ultrasonic probe, ultrasonic receiver 2, if the signal that certain moment receives is compared with previous moment, the change of waveform beyond the threshold value preset, is then judged to be abnormal condition;
Annunciator 4, connects one chip microcomputer 3, when one chip microcomputer 3 is judged to be abnormal condition, is controlled to give the alarm by one chip microcomputer 3.
Described ultrasonic probe, ultrasonic receiver 2 and ultrasonic transmission device 1 have unique number, described one chip microcomputer 3 according to exceed default threshold value waveform change corresponding to ultrasonic probe, ultrasonic receiver 2, judge corresponding out-of-the way position.
Compared with prior art, because the present invention is provided with super sonic sending and receiving apparatus, the driving conditions near automotive wheel can be detected fast and accurately, when run into pedestrian fall down or at motor tire attached or automobile close on the small-scale obstacle near time, the change that system can occur on people or object according to super sonic is made a response.When super sonic runs into obstacle, waveform changes and reflects, the one chip microcomputer being positioned at car receives the information of the waveform change that receiving device sends, send instruction, make siren horn work, can remind when to have doubtful pedestrian near driver's automobile or occur obvious obstacle like this, should stop at once, to process accident in time, have the advantages that structure is simple, preventive effect is good.
Accompanying drawing explanation
Fig. 1 is hardware system schematic diagram of the present invention.
Fig. 2 is scheme of installation of the present invention.
Fig. 3 is workflow diagram of the present invention.
Fig. 4 is hypracoustic launching and receiving schematic diagram.
Detailed description of the invention
Embodiments of the present invention are described in detail below in conjunction with drawings and Examples.
As shown in Figure 1, the environmental detecting system of a kind of self-propelled vehicle when low speed, comprising:
Ultrasonic transmission device 1, has several, has unique number respectively, launches ultrasonic signal when running car;
Ultrasonic probe, ultrasonic receiver 2, consistent with the quantity of described ultrasonic transmission device 1, respectively there is unique number, correspondence is faced and is installed by a ultrasonic transmission device 1 one by one, when the ultrasonic signal that a ultrasonic transmission device 1 is launched run into obstacle turn back time, corresponding ultrasonic probe, ultrasonic receiver 2 receives this signal of turning back back;
One chip microcomputer 3, processes the Received signal strength from ultrasonic probe, ultrasonic receiver 2, if the signal that certain moment receives is compared with previous moment, the change of waveform beyond the threshold value preset, is then judged to be abnormal condition;
Annunciator 4, connects one chip microcomputer 3, when one chip microcomputer 3 is judged to be abnormal condition, is controlled to give the alarm by one chip microcomputer 3.
As shown in Figure 2, ultrasonic transmission device 1, be fixedly installed in bottom margin place and the head lamp lower position of automobile respectively, such as, the below of bottom of car edge near the dead ahead of tire and car front car light can be placed in, and the car bottom edge of two tire middles, communicate with the external world, 8 ultrasonic transmission devices 1 are had, during for having judged whether to occur obvious obstacle near pedestrian or automobile in the present embodiment.
Super sonic launching and receiving principle: super sonic is rectilinear propagation mode, frequency is higher, diffracting power is more weak, but reflection potential is stronger, ultrasonic transmitter is utilized to launch super sonic to a direction, super sonic is propagated in atmosphere, encounters obstacle and just return immediately in way, and ultrasonic receiver receives backward wave just immediately by the information leaflet sheet machine of change.The circuit function module forming ranging system comprises transmission circuit, acceptor circuit, corn module singlechip controller and some auxiliary circuits.
Ultrasonic transmission device of the present invention and receiving device take to receive and dispatch the mode that is separated see Fig. 3, and this benefit has two, and one is that receiving and transmitting signal can not aliasing, and pure received by receiving transducer is reflected signal; Two is that receiving transducer is placed on correct position, the various loss that super sonic can be avoided to cause when body surface reflects and interference, improves the reliability of system.Put ultrasonic transmission device respectively in the dead ahead of each motor tire, whether have obstacle to exist to detect present tire front.Quite little owing to there is the probability of pedestrian or obvious obstacle when automobile is run at high speed on expressway, therefore under described environmental detecting system system is mainly applicable to downtown area, block low-speed running state, ultrasonic testing was also no more than for 0.5 second by the whole process of one chip microcomputer control warning, and under low-speed run state, driver has sufficient time drag to take further step like this.
See Fig. 4, workflow of the present invention is as follows: eight ultrasonic transmission devices are distributed in the draw-in groove at place immediately below the dead ahead of four tires and the position, middle of two tires and car light, the waveform of continual transmitting same frequency, during normal traveling, the waveform that ultrasonic reflections is returned should be same frequency waveform, when there being road surface to occur that obstacle or pedestrian are poured near automobile, the volume of people's body is larger relative to objects such as stone roadblocks, after super sonic runs into the person, great change is there is in its reflection configuration in the waveform running into ground, when the reflection configuration that ultrasonic probe, ultrasonic receiver is recovered to occurs significantly to change, one chip microcomputer can be made a response and be controlled siren horn work, now driver has the sufficient time to make the reaction of stopping or slowing down, when the waveform that ultrasonic detection device detection of reflected is returned is unchanged or change by a small margin, namely normal pavement state is considered as, without the need to making a response.
In the present invention, because ultrasonic probe, ultrasonic receiver 2 has unique numbering, therefore, one chip microcomputer 3 according to exceed default threshold value waveform change corresponding to ultrasonic probe, ultrasonic receiver 2, corresponding out-of-the way position can be judged.
Claims (2)
1. the environmental detecting system of self-propelled vehicle when low speed, is characterized in that, comprising:
Ultrasonic transmission device (1), has several, is fixedly installed in bottom margin place and the head lamp lower position of automobile respectively, launches ultrasonic signal when running car;
Ultrasonic probe, ultrasonic receiver (2), consistent with the quantity of described ultrasonic transmission device (1), correspondence is faced by ultrasonic transmission device (1) installation one by one, when the ultrasonic signal that a ultrasonic transmission device (1) is launched run into obstacle turn back time, corresponding ultrasonic probe, ultrasonic receiver (2) receives this signal of turning back back;
One chip microcomputer (3), Received signal strength from ultrasonic probe, ultrasonic receiver (2) is processed, if the signal that certain moment receives is compared with previous moment, the change of waveform beyond the threshold value preset, is then judged to be abnormal condition;
Annunciator (4), connects one chip microcomputer (3), when one chip microcomputer (3) is judged to be abnormal condition, is controlled to give the alarm by one chip microcomputer (3).
2. the environmental detecting system of self-propelled vehicle when low speed according to claim 1, it is characterized in that, described ultrasonic probe, ultrasonic receiver (2) and ultrasonic transmission device (1) have unique number, described one chip microcomputer (3) basis exceeds the ultrasonic probe, ultrasonic receiver (2) corresponding to change of the waveform of default threshold value, judges corresponding out-of-the way position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816192.3A CN104608689A (en) | 2014-12-23 | 2014-12-23 | Environmental detection system for motor vehicle at low speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816192.3A CN104608689A (en) | 2014-12-23 | 2014-12-23 | Environmental detection system for motor vehicle at low speed |
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| CN104608689A true CN104608689A (en) | 2015-05-13 |
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| CN201410816192.3A Pending CN104608689A (en) | 2014-12-23 | 2014-12-23 | Environmental detection system for motor vehicle at low speed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719869A (en) * | 2017-05-31 | 2020-01-21 | 法雷奥开关和传感器有限责任公司 | Method for operating an ultrasonic sensor device of a motor vehicle for monitoring a ground area underneath the motor vehicle, ultrasonic sensor device, driver assistance system and motor vehicle |
| CN112586986A (en) * | 2020-12-24 | 2021-04-02 | 佛山市顺德区美的饮水机制造有限公司 | Method, device, storage medium and processor for identifying error signal |
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| JPS59128029A (en) * | 1983-01-11 | 1984-07-24 | Nippon Denso Co Ltd | Warning apparatus for backward object for vehicle |
| DE3420004A1 (en) * | 1984-05-29 | 1985-12-05 | Bosch Gmbh Robert | Separation measurement device for motor vehicles |
| CN101323278A (en) * | 2007-06-15 | 2008-12-17 | 福特环球技术公司 | Warning apparatus for a motor vehicle |
| DE102007056139A1 (en) * | 2007-11-20 | 2009-05-28 | Volkswagen Ag | Motor vehicle i.e. passenger car, has direction indicators that output alarm signal i.e. optical and/or acoustic signal, during danger situation, where alarm signal is noticed both inside vehicle and outside vehicle |
| CN103204122A (en) * | 2012-01-16 | 2013-07-17 | 深圳职业技术学院 | Alarm system and alarm method for vehicle lane change |
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2014
- 2014-12-23 CN CN201410816192.3A patent/CN104608689A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3222900A1 (en) * | 1981-06-19 | 1983-03-17 | Nissan Motor Co., Ltd., Yokohama, Kanagawa | SYSTEM FOR DETECTING MOVING OBSTACLES FOR A VEHICLE |
| JPS59128029A (en) * | 1983-01-11 | 1984-07-24 | Nippon Denso Co Ltd | Warning apparatus for backward object for vehicle |
| DE3420004A1 (en) * | 1984-05-29 | 1985-12-05 | Bosch Gmbh Robert | Separation measurement device for motor vehicles |
| CN101323278A (en) * | 2007-06-15 | 2008-12-17 | 福特环球技术公司 | Warning apparatus for a motor vehicle |
| DE102007056139A1 (en) * | 2007-11-20 | 2009-05-28 | Volkswagen Ag | Motor vehicle i.e. passenger car, has direction indicators that output alarm signal i.e. optical and/or acoustic signal, during danger situation, where alarm signal is noticed both inside vehicle and outside vehicle |
| CN103204122A (en) * | 2012-01-16 | 2013-07-17 | 深圳职业技术学院 | Alarm system and alarm method for vehicle lane change |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719869A (en) * | 2017-05-31 | 2020-01-21 | 法雷奥开关和传感器有限责任公司 | Method for operating an ultrasonic sensor device of a motor vehicle for monitoring a ground area underneath the motor vehicle, ultrasonic sensor device, driver assistance system and motor vehicle |
| US11724740B2 (en) | 2017-05-31 | 2023-08-15 | Valeo Schalter Und Sensoren Gmbh | Method for operating an ultrasonic sensor device for a motor vehicle to monitor a ground area below the motor vehicle, ultrasonic sensor device, driver assistance system and motor vehicle |
| CN112586986A (en) * | 2020-12-24 | 2021-04-02 | 佛山市顺德区美的饮水机制造有限公司 | Method, device, storage medium and processor for identifying error signal |
| CN112586986B (en) * | 2020-12-24 | 2023-05-30 | 佛山市顺德区美的饮水机制造有限公司 | Method, device, storage medium and processor for identifying error signal |
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Application publication date: 20150513 |
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