CN2476458Y - Ultrasonic distance measurement device for vehicle - Google Patents

Ultrasonic distance measurement device for vehicle Download PDF

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Publication number
CN2476458Y
CN2476458Y CN 01221308 CN01221308U CN2476458Y CN 2476458 Y CN2476458 Y CN 2476458Y CN 01221308 CN01221308 CN 01221308 CN 01221308 U CN01221308 U CN 01221308U CN 2476458 Y CN2476458 Y CN 2476458Y
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CN
China
Prior art keywords
input
circuit
mouth
host cpu
signal
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Application number
CN 01221308
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Chinese (zh)
Inventor
李兰波
李兰平
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李兰波
李兰平
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Application filed by 李兰波, 李兰平 filed Critical 李兰波
Priority to CN 01221308 priority Critical patent/CN2476458Y/en
Application granted granted Critical
Publication of CN2476458Y publication Critical patent/CN2476458Y/en

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Abstract

The utility model discloses a detecting device for a supersonic vehicle, in particular to detecting front obstructions (or back) and vehicles driving in fog. Sound wave shooting is modulated by a license plate number, which solves an interfere problem caused by a plurality of vehicles detecting the distance in a same range. A character provides traffic administration departments with convenience to carry out automatic management on vehicles. The utility model has a record function that records contents of traffic accidents, as the basis for the traffic administration departments to judge responsibilities of traffic accidents.

Description

The automobile-used distance measuring equipment (DME) of super sonic
The utility model relates to the automobile-used distance measuring equipment (DME) of a kind of super sonic, refers more particularly to a kind of super sonic remote tracing distance measuring equipment (DME) of vehicle special use.
Ultrasonic measuring distance technology has obtained extensive must the application as the modern surveying instrument.Institute's measurement means of taking is varied, and its principle all is to utilize rectilinear propagation that super sonic has and good reflectance characteristics, the various measuring equipments that manufacture.At present, the patent No. that the equipment that is applied to automobile range finding aspect had announce in 93 years is 93247625.2 automobile ultrasonic back-up buzzer, and its radical function is that afterbody is hit when preventing reversing automobile.But the measuring distance of this device is very short, and can not demonstrate the position of obstacle by suitable form.
Statistics according to traffic department, the traffic accident incidence is very high when foggy weather occurs, because when travelling in fog day, the driver can't see that the place ahead has or not vehicle and obstacle to exist in safety distance, in case find late, caused the generation of traffic accident, brought about great losses for personal safety and national wealth.Especially, the traffic control department closing high-speed highway of having to makes its withdraw from use when the greasy weather occurs, and has brought pressure to communications and transportation so undoubtedly, simultaneously, brings very large economy loss also for traffic control department.
The objective of the invention is to the automobile-used distance measuring equipment (DME) of a kind of super sonic of automobilist.Can make the automobilist know clearly the position of the place ahead and front vehicle and can take appropriate measures in time by this device to avoid occurring accident.
The objective of the invention is to realize by following equipment.
This equipment is to provide an automobile-used antifog distance measuring equipment (DME) of multifunction ultrasonic.Its function one, utilize and dynamically follow the tracks of distance measurement function, the driver can accurately be judged in the 100 meters scopes in the place ahead (or rear) from the read-out of this equipment when greasy weather and night running have or not driving vehicle and harmful obstacle, thereby can reduce the incidence of traffic accident, guarantee is provided for driver's safe driving.Its function two, also have can the real time recording current time and the functional module (being commonly called as black box) of the speed of a motor vehicle in this device, can preserve the content of current record 12 hours, its purpose is, when in a single day traffic accident takes place in vehicle, traffic control department can be in black box extracts the recorded content of traffic accident when taking place with instrumentation, with this basis for estimation as accident liability.Its function three, the content of the digital supersonic that this equipment sent are synthetic with the license plate number of this car and the contents such as sequence number of validating the car, and can utilize automatic checkout equipment to realize detecting automatically in the check-point for traffic control department.
In the distance measuring equipment (DME) of the automobile-used the place ahead of this super sonic, contain ultrasonic transmission/reception circuit, vehicle speed detector device, host CPU and read out instrument, ultrasonic transmission/reception circuit, vehicle speed detector device and read out instrument are connected with host CPU respectively, vehicle speed detector device contains Hall element speed sensor, time base circuit and energy disperser respectively, the mouth of speed sensor is connected with the input end of time base circuit, the mouth of time base circuit is connected with the input end of energy disperser, and the mouth of energy disperser is input to host CPU with detection signal;
In the ultrasonic transmission/reception circuit, contain transmitting branch and receiving branch,
In transtation mission circuit, an input end of time schedule controller is connected with host CPU, mouth is connected and is connected with the ultrasonic transmission/reception switch with arithmetic and logic unit able to programme in the receiving branch, another mouth is connected with the input end of programmable storage, the mouth of programmable storage is connected with the input end of modulator, the mouth of modulator is connected with the input end of an amplification emissioning circuit, and the mouth of this transmission circuit is connected to a transmit/receive switch
In receiving branch, a mouth of transmit/receive switch is connected with the input end that receives amplifying circuit, the mouth that receives amplifying circuit is connected with the input end of a peak detection circuit, the mouth of this testing circuit is connected with the input end of detecting circuit, the mouth of detecting circuit is connected with the input end of shaping identification circuit, the mouth of this identification circuit is connected with another input end of arithmetic and logic unit able to programme, the mouth of this arithmetic and logic unit is connected with an input end of host CPU, and another mouth of transmit/receive switch is connected with a transducer switch, and the transducer switch is connected with two large-power supersonic transducers;
Contain an input end that is used for the CPU of signal conditioning in the read out instrument and be connected, be converted to the shows signal of sound or optics with output signal host CPU with host CPU.
On host CPU, also be connected with a temperature sensing circuit, the mouth of temperature sensor wherein is connected with a temperature detection amplifier input terminal, the mouth of this amplifier is connected with the input end of an A/D converter, and the output signal of A/D converter is input to host CPU to be used to improve survey precision.
The signal that is input in the host CPU of energy disperser also is input in the logger (black box) simultaneously, and the clock signal that the electronic watch circuit produces also is input in the logger (black box) simultaneously carries out record.
On host CPU, also be connected with a device that shows the vehicle coordinate position, wherein host CPU mouth is connected with the input end of a liquid crystal display CPU, another input end of this demonstration CPU is used to import the clock signal that the electronic watch circuit produces, and the mouth of this liquid crystal display CPU is connected with the input end of Liquid Crystal Display (LCD), to show the coordinate position of vehicle on this Liquid Crystal Display (LCD).
Form a vehicle inspection device by programmable storage, modulator, high-power amplification emissioning circuit and large-power supersonic transducer, promptly prelist and store a specific number by programmable storage, for example the number-plate number of this car is as digital true form, and send to modulator chronologically, through modulator this former coded signal is modulated into ultrasonic signal, and launches by delivering to large-power supersonic transducer after the amplification emissioning circuit amplification.
On host CPU, also be connected with a user unit is set, be used to select the mode and display mode simulation or digital form of reporting to the police.
The present invention is described in detail below in conjunction with accompanying drawing.
Fig. 1 is the structure diagram of the basic automobile-used antifog distance measuring equipment (DME) of super sonic,
Fig. 2 is the logical circuitry of the automobile-used antifog distance measuring equipment (DME) of super sonic,
Fig. 3 is the workflow diagram of the automobile-used antifog distance measuring equipment (DME) of super sonic,
Fig. 4 is a scheme of installation.
As shown in Figure 1, in the automobile-used antifog distance measuring equipment (DME) of basic super sonic, ultrasonic transmission/reception circuit, vehicle speed detector device 100 and read out instrument 200 are connected with host CPU 2 respectively, and contain transmitting branch 300 and receiving branch 400 in the ultrasonic transmission/reception circuit.Host CPU 2 is by handling the speed signal that is obtained by vehicle speed detector device 100, to determine the residing instantaneous velocity of this car, and host CPU 2 sends ultrasonic signal by super sonic transmitting branch 300 off and on to vehicle front or rear, and by the ultrasonic signal that vehicle reflected of super sonic receiving branch 400 receptions by this car the place ahead.Host CPU 2 is by determining the time difference between this ultrasonic signal transmission and the reflection, and, and auxiliary calculate the place ahead (or rear) vehicle in distance between this car and the residing position of vehicle, the place ahead (or rear) with certain verification coefficient in conjunction with the speed of this car.And will show at read out instrument 200 by coordinate or digital form from the position signal of the place ahead (or rear) vehicle that host CPU 2 is calculated.
Figure 2 illustrates the logical circuitry of the detailed automobile-used antifog distance measuring equipment (DME) of super sonic, its concrete principle of work is as follows:
The user is provided with unit 1 and is the user facillity setting input device, can utilize button the place ahead distance measuring method or rear distance measuring method on the control panel.Type of alarm; The range observation scope can be selected arbitrarily in 3-100 rice scope; On the mode that shows, there are numeral and two kinds of display modes of simulation to select for the user.The effect of host CPU (central process unit) 2 is that the velocity compensation data that the temperature compensation data sent here of transit time data that shaping identification circuit 10 is sent here and A/D converter 13 and energy disperser 15 are sent here are carried out comprehensive computing, and brilliant CPU 18 and the signal conditioning CPU 20 of showing of operation result liquor charging handled.The timing control signal that time schedule controller 3 is produced, to programmable storage 4, modulator 5, high-power amplification emissioning circuit 6, ultrasonic transmission/reception switch 7, the logical amplifying circuit 8 of high precision band, detecting circuit 9, shaping identification circuit 10, the system that is formed carries out sequential logic control.Programmable storage 4 is used for storing the digital true form that prelists, and its digital content is to work out with the license plate number of this car.And the clock signal that provided of controller 3 sends to modulator 5 chronologically.The former coded signal that modulator 5 is sent programmable storage 4 here is modulated into the ultrasonic signal of 40kHz, amplifies after transducer commutation circuit 22 is switched F through excessive power amplification emissioning circuit 6 1Perhaps F 2Launch.Ultrasonic transmission/reception commutation circuit 7 is that the sequential that provided of controller 3 is carried out switch operating chronologically.The logical amplifying circuit 8 of high precision band amplifies the echoed signal that receives, and carries out the shaping processing through sending into shaping identification circuit 10 after detecting circuit 9 detections.Discerned by identification circuit, carry out the transit time computing if useful signal will be sent into arithmetic and logic unit 11 able to programme, the result of computing is gathered by CPU2.Temperature detection amplifier 12 is high-operational amplifier circuit, and it is that temperature sensor temperature parameter that R collects is amplified, and sends into A/D converter 13 then and carries out analogue to digital conversion, gathers laggard trip temperature compensation operation by CPU2 then.Time base circuit 14 is handled the speed pulse signal that speed sensor D sends here, carries out the velocity compensation computing by delivering to CPU2 after energy disperser 15 bufferings.Electronic watch circuit 16 is to provide time signal to logger (black box) 17 and liquid crystal display CPU18.Logger (black box) the 17th, logger (black box), it carries out record from energy disperser 15, electronic watch circuit 16 extraction rate signals and time signal respectively, and recorded content was kept 12 hours.Liquid crystal display CPU18 sends host CPU 2 here data-signal and handles, and demonstrates the coordinate position of measured target by Liquid Crystal Display (LCD) 19.The threshold values data that signal conditioning CPU 20 is sent here by the CPU2 processing of reporting to the police is sent sound and light alarm by visual alarm L, loud speaker Y.
Fig. 3 shows the workflow diagram according to the automobile-used antifog distance measuring equipment (DME) of super sonic of the present utility model.Wherein handle time difference between transmitting and receiving by measured signal of speed detector and temperature-detecting device and combined echocardiography ripple by central process unit, through certain calculating drawing the distance between fwd vehicle and this car, and with this result by Language Processing or show that processing notifies the driver and the occupant of this car.
This circuit is owing to adopt velocity compensation circuit, temperature-compensation circuit to go for dynamically following the tracks of under the different temperatures environment range finding; Because adopt the ultrasonic signal that has the numerical code feature, actv. has solved the problem that interferes with each other that is produced when having a plurality of vehicles to find range in same scope.And large-power supersonic transducer F1 and F2 are installed in respectively on the front and back bumper/spoiler of automobile.This circuit working is stable, dependable performance, the smart height of measurement.Has very high value of service.
When the greasy weather occurred, automobile travelled with the speed of 50km/h through test, and the error amount of measurement is 0.5%m.When travelling with the speed of 80km/h, measured error amount is 0.9%m.Test result can reach the operating needs that traffic department proposes.

Claims (6)

1. the automobile-used distance measuring equipment (DME) of super sonic contains ultrasonic transmission/reception circuit, vehicle speed detector device, host CPU (2) and read out instrument, and ultrasonic transmission/reception circuit, vehicle speed detector device and read out instrument are connected with host CPU (2) respectively, it is characterized in that,
Vehicle speed detector device contains Hall element speed sensor (D), time base circuit (14) and energy disperser (15) respectively, the mouth of speed sensor (D) is connected with the input end of time base circuit (14), the mouth of time base circuit (14) is connected with the input end of energy disperser (15), and the mouth of energy disperser (15) is input to host CPU (2) with detection signal;
In the ultrasonic transmission/reception circuit, contain transmitting branch and receiving branch,
In transtation mission circuit, time schedule controller, (3) input end and host CPU, (2) be connected, arithmetic and logic unit able to programme in mouth and the receiving branch, (11) be connected and with the ultrasonic transmission/reception switch, (7) be connected, another mouth and programmable storage, (4) input end is connected, programmable storage, (4) mouth and modulator, (5) input end is connected, modulator, (5) mouth and an amplification emissioning circuit, (6) input end is connected, this transmission circuit, (6) mouth is connected to a ultrasonic transmission/reception switch, (7)
In receiving branch, a mouth of ultrasonic transmission/reception switch (7) is connected with the input end that receives amplifying circuit (8), the mouth that receives amplifying circuit (8) is connected with the input end of a peak detctor (21), the mouth of this detector is connected with the input end of detecting circuit (9), the mouth of detecting circuit (9) is connected with the input end of shaping identification circuit (10), the mouth of this identification circuit (10) is connected with another input end of arithmetic and logic unit able to programme (11), the mouth of this arithmetic and logic unit (11) is connected with an input end of host CPU (2), and another mouth of ultrasonic transmission/reception switch is connected with a transducer commutation circuit (22), and transducer commutation circuit (22) input end is connected with a mouth of host CPU 2.Two mouths of transducer commutation circuit (22) are connected with two large-power supersonic transducers respectively;
Contain an input end that is used for the CPU (20) of signal conditioning in the read out instrument and be connected, be converted to the sound or the shows signal of optics with output signal with host CPU with host CPU,
In addition, form a ultrasonic transmission device by programmable storage (4), modulator (5), high-power amplification emissioning circuit (6) and large-power supersonic transducer (7), promptly prelist and store a specific number by programmable storage (4), for example the number-plate number of this car is as digital true form, and send to modulator (5) chronologically, through modulator (5) this former coded signal is modulated into ultrasonic signal, and by delivering to large-power supersonic transducer (F after amplification emissioning circuit (6) amplification 1Or F 2) launch.Solved when one a plurality of vehicles are found range in same scope the mutual interference problem of generation.
2. the automobile-used distance measuring equipment (DME) of super sonic as claimed in claim 1, it is characterized in that, on host CPU, also be connected with a temperature sensing circuit, the mouth of temperature sensor wherein (R) is connected with the input end of a temperature detection amplifier (12), the mouth of this amplifier (12) is connected with the input end of an A/D converter (13), and the output signal of A/D converter (13) is input to host CPU and uses at the different temperatures environment being used for.
3. the automobile-used distance measuring equipment (DME) of super sonic as claimed in claim 1 or 2, it is characterized in that, the signal that energy disperser (15) is input in the host CPU also is input in the logger (black box) simultaneously, and the clock signal that electronic watch circuit (16) produces also is input in the logger (black box) (17) simultaneously carries out record.
4. as claim 1,2 or 3 the automobile-used distance measuring equipment (DME) of super sonic, it is characterized in that, on host CPU (2), also be connected with a device that shows the tested vehicle coordinate position, wherein a mouth of host CPU (2) is connected with the input end of a liquid crystal display CPU (18), another input end of this demonstration CPU (18) is used to import the clock signal that electronic watch circuit (16) produces, and the mouth of this liquid crystal display CPU is connected with the input end of Liquid Crystal Display (LCD) (19), to show the coordinate position of tested vehicle on this Liquid Crystal Display (LCD).
5. as the automobile-used distance measuring equipment (DME) of super sonic of one of above-mentioned claim, it is characterized in that, on host CPU (2), also be connected with a user unit (1) is set, be used to select the place ahead range finding or rear range finding.The mode and display mode simulation or digital form of reporting to the police.
6. as the automobile-used distance measuring equipment (DME) of super sonic of one of above-mentioned claim, it is characterized in that switch unit after also being connected with on the host CPU (2), two large-power supersonic transducer (F 1, F 2) respectively place the front and back of vehicle, transmit forward or backward to switch.
CN 01221308 2001-05-11 2001-05-11 Ultrasonic distance measurement device for vehicle CN2476458Y (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100371735C (en) * 2003-05-16 2008-02-27 株式会社电装 Ultrasonic sensor
CN100373170C (en) * 2004-07-28 2008-03-05 株式会社电装 Obstacle detecting apparatus
CN100405082C (en) * 2004-07-20 2008-07-23 株式会社电装 Obstacle detection system
CN100422761C (en) * 2004-07-20 2008-10-01 株式会社电装 Obstacle detecting apparatus
CN100445122C (en) * 2005-12-21 2008-12-24 宁波妈咪宝婴童用品制造有限公司 Intelligent obstacle averter for electric bicycle
CN100498374C (en) * 2003-10-11 2009-06-10 瓦莱奥开关传感器有限公司 Method for detecting an obstacle in the detection area of a detection device
CN102854815A (en) * 2012-07-25 2013-01-02 北京百纳威尔科技有限公司 Mobile terminal
CN104764543A (en) * 2014-01-08 2015-07-08 宝马股份公司 Temperature Measuring Device and Method for Temperature Measurement of Ambient Air of Vehicle

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100371735C (en) * 2003-05-16 2008-02-27 株式会社电装 Ultrasonic sensor
CN100498374C (en) * 2003-10-11 2009-06-10 瓦莱奥开关传感器有限公司 Method for detecting an obstacle in the detection area of a detection device
CN100405082C (en) * 2004-07-20 2008-07-23 株式会社电装 Obstacle detection system
CN100422761C (en) * 2004-07-20 2008-10-01 株式会社电装 Obstacle detecting apparatus
CN100373170C (en) * 2004-07-28 2008-03-05 株式会社电装 Obstacle detecting apparatus
CN100445122C (en) * 2005-12-21 2008-12-24 宁波妈咪宝婴童用品制造有限公司 Intelligent obstacle averter for electric bicycle
CN102854815A (en) * 2012-07-25 2013-01-02 北京百纳威尔科技有限公司 Mobile terminal
CN102854815B (en) * 2012-07-25 2015-02-04 北京百纳威尔科技有限公司 Mobile terminal
CN104764543A (en) * 2014-01-08 2015-07-08 宝马股份公司 Temperature Measuring Device and Method for Temperature Measurement of Ambient Air of Vehicle
CN104764543B (en) * 2014-01-08 2019-04-23 宝马股份公司 The method that temperature measuring device and surrounding air used for vehicles carry out temperature measurement

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