CN105160814A - Car accident automatic positioning detection system based on amplification circuit - Google Patents

Car accident automatic positioning detection system based on amplification circuit Download PDF

Info

Publication number
CN105160814A
CN105160814A CN201510460287.0A CN201510460287A CN105160814A CN 105160814 A CN105160814 A CN 105160814A CN 201510460287 A CN201510460287 A CN 201510460287A CN 105160814 A CN105160814 A CN 105160814A
Authority
CN
China
Prior art keywords
module
amplifying circuit
resistance
acceleration
traffic accident
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510460287.0A
Other languages
Chinese (zh)
Inventor
张瑜
陈黛文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUZHOU XUANHE IOT TECHNOLOGY Co Ltd
Original Assignee
SUZHOU XUANHE IOT TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SUZHOU XUANHE IOT TECHNOLOGY Co Ltd filed Critical SUZHOU XUANHE IOT TECHNOLOGY Co Ltd
Priority to CN201510460287.0A priority Critical patent/CN105160814A/en
Publication of CN105160814A publication Critical patent/CN105160814A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal operating condition and not elsewhere provided for
    • G08B21/02Alarms for ensuring the safety of persons
    • G08B21/04Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
    • G08B21/0438Sensor means for detecting
    • G08B21/0461Sensor means for detecting integrated or attached to an item closely associated with the person but not worn by the person, e.g. chair, walking stick, bed sensor

Abstract

The invention discloses a car accident positioning detection system based on an amplification circuit. The system includes a microcontroller module, a differential capacitor, a modulation circuit, an amplification circuit, a duty ratio modulator, a communication module and a positioning module; the differential capacitor is connected with the microcontroller module through the modulation circuit, the amplification circuit and the duty ratio modulator which are connected in sequence, the positioning module and the communication module are connected to corresponding ports of the microcontroller module, and the microcontroller module includes a calculation unit, a comparison unit and a control unit, functions of real-time determination of acceleration, real-time displaying of longitude and latitude and automatic information sending are realized, and deaths caused by delayed rescue are greatly reduced.

Description

The automatic position detecting system of a kind of traffic accident based on amplifying circuit
Technical field
The present invention relates to a kind of acceleration detection system, particularly relate to the automatic position detecting system of a kind of traffic accident based on amplifying circuit, belong to traffic accident Automatic Measurement Technique field.
Background technology
Guaranteeing the safety of driver and passenger to greatest extent when automobile meets accident collision, is one of target of auto industry pursuit.Statistics according to the Ministry of Public Health of China shows, in 1000 routine traffic hazard the wounded, only has the wounded of 14.3% to ride in ambulances in time and arrives hospital.Road traffic accident shows, if occur to adopt emergency treatment in 5min in traffic hazard, adopts emergency treatment, heavy the wounded of 18% ~ 25% at least can be made to avoid death in 30mm; In addition, in China's traffic death, the wounded of about 40% dies instantly, all the other 60% be die from hospital or be sent to hospital way in, wherein the wounded of 30% be because rescue dead not in time.Along with going deep into of automotive safety research, adopt the automobile collision protection system (as air bag etc.) that is gradually improved effectively can reduce Traffic Accident Mortality, also all kinds of corrupt practices creep in simultaneously (as can not alarm latency rescue in time etc.).
Utilize acceleration to exist to measure traffic accident generation at present, west vehicle supervision department, in order to traffic safety, has specially formulated dead this numerical value of acceleration 500g (g=10N/kg), with the people that rouses the public.If be meant to travel acceleration to exceed this value, will be in peril of one's life, so large acceleration, generally emergency brake is unapproachable, only after clashing, just can reach this numerical value.The time of vehicle collision is very short, be mostly Millisecond, and the processing speed of Atmega128 single-chip microcomputer is Microsecond grade, even has more senior chip processing speed to reach nanosecond, is enough to acceleration when calculating collision.Such as, two motorcycle speed per hour 20km (5.6m/s), go in the same direction and collide, collision time is Millisecond, calculate by 0.001s, in time short like this, the acceleration produced is a1=V/t=5.6/0.001=560g, if emergency brake, to final stopping from brake, the time calculates by 1s, and generation acceleration is a2=V/t=5.6/1=0.56g, the acceleration that visible collision produces is very big, confirms that it is feasible for judging whether to get into an accident by the method for sense acceleration.
Such as application number is that apparatus for ask for help through is located in a kind of traffic accident of " 201110163240.X " automatically, comprise traffic accident sensor, temperature sensor, position locator and distress signal transmitter, traffic accident sensor is used for the state of Real-Time Monitoring air bag, generates traffic accident control signal when air bag is opened; Temperature sensor is used for Real-time Collection compartment temperature information, generates fire control signal when compartment temperature is greater than the threshold value pre-set; Position locator is used for vehicle position information to send to distress signal transmitter; Distress signal transmitter for generating emergency note, and will cry for help short message sending to associated mechanisms or individual by wireless network.Get into an accident or fire time, the present invention can send emergency note automatically, and provides vehicle position information accurately, make salvage service implement in time relief, injured litigant can be given first aid in time.
And for example application number is " 201210145683.0 " automatic car accident positioning alarm system, forms primarily of central processing unit and the GPS module be connected with central processing unit respectively, gsm module and MEMS acceleration transducer.The invention has the advantages that: this automatic positioning alarm system design adopts Atmega128 single-chip microcomputer as the central processing unit of whole system, is connected with MEMS acceleration transducer, GPS locating module, gsm communication module.Can in automatic placement of emergency calls after the occurrence of the traffic accident, inform exact position that relevant departments' traffic accident occurs, time, make it send rescue group in the very first time, striving for the more time to rescuing the wounded, saving more life.
Summary of the invention
Technical matters to be solved by this invention provides the automatic position detecting system of a kind of traffic accident based on amplifying circuit for the deficiency of background technology.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
The automatic position detecting system of traffic accident based on amplifying circuit, comprises micro controller module, differential capacitor, modulation circuit, amplifying circuit, duty cycle modulator, communication module, locating module; Modulation circuit, amplifying circuit, the duty cycle modulator connection micro controller module of described differential capacitor by connecting successively, described locating module and communication module are connected on the corresponding port of micro controller module, and described micro controller module comprises computing unit, contrast unit and control module;
Described amplifying circuit comprises amplifier chip, the first resistance, the second resistance, the 3rd resistance, the output terminal of modulation circuit connects one end of the first resistance and the second resistance respectively, the other end of the second resistance connects the positive pole of amplifier chip, with the other end ground connection of the first resistance after the negative pole of amplifier chip and the 3rd resistant series, the voltage output end of amplifier chip connects the input end of micro-duty cycle modulator;
Wherein, differential capacitor, produces electric signal for vehicle under the effect of acceleration;
Modulation circuit, carries out demodulation for the electric signal produced differential capacitor;
Amplifying circuit, for carrying out amplification process to the electric signal of modulation circuit demodulates;
Duty cycle modulator, for converting the square wave that dutycycle and acceleration are directly proportional to by the electric signal of amplification;
Computing unit, for going out the acceleration of vehicle according to the computation of Period of square wave;
Contrast unit, contrasts with setting threshold value for the vehicle acceleration calculated by computing unit, if exceed setting threshold value, then sends a signal to control module;
Control module, is sent to traffic monitoring department for the vehicle position information of being located by locating module by communication module.
As the further preferred version of the automatic position detecting system of a kind of traffic accident based on amplifying circuit of the present invention, described micro controller module adopts AVR series monolithic.
As the further preferred version of the automatic position detecting system of a kind of traffic accident based on amplifying circuit of the present invention, the chip model of described modulation circuit is CD4646.
As the further preferred version of the automatic position detecting system of a kind of traffic accident based on amplifying circuit of the present invention, described locating module adopts QD75 locating module.
As the further preferred version of the automatic position detecting system of a kind of traffic accident based on amplifying circuit of the present invention, the chip model of described communication module is TC35.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1, the perfect data communication platform that provides by means of QD75 locating module and gsm communication technology of the present invention, reaches the order ground of automatic locating alarming, greatly reduces owing to rescuing the death caused not in time;
2, the present invention in exact position, the time automatically sending information to relevant departments' traffic accident generation after the occurrence of the traffic accident, can make it send rescue group in the very first time, striving for the more time, saving more life to rescuing the wounded.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention;
Amplifying circuit circuit diagram of the present invention during Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, the automatic position detecting system of a kind of traffic accident based on amplifying circuit, is characterized in that: comprise micro controller module, differential capacitor, modulation circuit, amplifying circuit, duty cycle modulator, communication module, locating module; Modulation circuit, amplifying circuit, the duty cycle modulator connection micro controller module of described differential capacitor by connecting successively, described locating module and communication module are connected on the corresponding port of micro controller module, and described micro controller module comprises computing unit, contrast unit and control module.
As shown in Figure 2, described amplifying circuit comprises amplifier chip, the first resistance, the second resistance, the 3rd resistance, the output terminal of modulation circuit connects one end of the first resistance and the second resistance respectively, the other end of the second resistance connects the positive pole of amplifier chip, with the other end ground connection of the first resistance after the negative pole of amplifier chip and the 3rd resistant series, the voltage output end of amplifier chip connects the input end of micro-duty cycle modulator.
Wherein, differential capacitor, produces electric signal for vehicle under the effect of acceleration;
Modulation circuit, carries out demodulation for the electric signal produced differential capacitor;
Amplifying circuit, for carrying out amplification process to the electric signal of modulation circuit demodulates;
Duty cycle modulator, for converting the square wave that dutycycle and acceleration are directly proportional to by the electric signal of amplification;
Computing unit, for going out the acceleration of vehicle according to the computation of Period of square wave; Specifically be calculated as a=(T 1/ T 2-U 0g) U 1g, wherein, a is the acceleration of vehicle, T 1for the ripple of square wave is wide, T 2for square wave period, U 0gfor the dutycycle that 0g is corresponding, U 1gfor the change in duty cycle value that 1g acceleration change causes; The vehicle acceleration that contrast unit calculates according to computing unit contrasts with setting threshold value, if vehicle acceleration exceedes setting threshold value, the vehicle position information that locating module is located then is passed to supervision department by communication module by control module;
Contrast unit, contrasts with setting threshold value for the vehicle acceleration calculated by computing unit, if exceed setting threshold value, then sends a signal to control module;
Control module, is sent to traffic monitoring department for the vehicle position information of being located by locating module by communication module.
The perfect data communication platform that the present invention provides by means of QD75 locating module and gsm communication technology, reaches the order ground of automatic locating alarming, greatly reduces owing to rescuing the death caused not in time; The present invention in exact position, the time automatically sending information to relevant departments' traffic accident generation after the occurrence of the traffic accident, can make it send rescue group in the very first time, striving for the more time, saving more life to rescuing the wounded.
Wherein, described micro controller module adopts AVR series monolithic, and the chip model of described modulation circuit is CD4646, and described locating module adopts QD75 locating module, and the chip model of described communication module is TC35.
Under the effect of acceleration, polysilicon structure can produce skew makes capacitance change.In signal processing circuit, the variable signal of differential capacitor is by passing through wave filter after modulator demodulation (by internal RF x and outside CFx, RFx is formed) deliver in duty cycle modulator, be converted to by modulator the square wave that dutycycle and acceleration be directly proportional, side wave period (T2) can be determined by Rs.This square wave can directly be delivered to single-chip microcomputer and process, and by using the width T1 of counter measures square-wave cycle T2 and arteries and veins, thus obtains the value of acceleration.Specifically be calculated as a=(T 1/ T 2-U 0g) U 1g,
Wherein, a is the acceleration of vehicle, T 1for the ripple of square wave is wide, T 2for square wave period, U 0gfor the dutycycle that 0g is corresponding, U 1gfor the change in duty cycle value that 1g acceleration change causes;
Gsm module adopts TC35, TC35 to be the new generation of wireless communication gsm modules that Siemens company releases, and fast and safely reliably can realize the data in system schema, voice transfer, Short Message Service (ShortMessageService) and fax.The operating voltage of module is 3.3 ~ 5.5V, can be operated in 900MHz and 1800MHz two frequency ranges, and place frequency range power consumption is respectively 2W (900M) and 1W (1800M).In addition, this module also has phonebook function, MPTY, and roaming measuring ability, conventional mode of operation has battery saving mode, IDLE, TALK isotype.By the ZIF connector of 40 pins of uniqueness, realize the transmitted in both directions of power supply connection, instruction, data, voice signal and control signal.
AVR single chip has prefetched instruction function, namely when an execution instruction, in advance next instruction is got into, and call instruction can be performed within a clock period; Multiple accumulator type, data processing speed is fast; AVR single chip has 32 general purpose working registers, and being equivalent to has 32 viaducts, can fast passing; Response time is fast.AVR single chip has multiple fixing interrupt vector entry address, can respond interruption fast; AVR single chip power consumption is low.For typical power consumption situation, be 100nA when WDT closes, be more suitable for battery powered application apparatus; The minimum 1.8V of some devices gets final product work; AVR single chip security performance is good.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, makes a variety of changes under can also or else departing from the prerequisite of present inventive concept.

Claims (5)

1., based on the automatic position detecting system of traffic accident of amplifying circuit, it is characterized in that: comprise micro controller module, differential capacitor, modulation circuit, amplifying circuit, duty cycle modulator, communication module, locating module; Modulation circuit, amplifying circuit, the duty cycle modulator connection micro controller module of described differential capacitor by connecting successively, described locating module and communication module are connected on the corresponding port of micro controller module, and described micro controller module comprises computing unit, contrast unit and control module;
Described amplifying circuit comprises amplifier chip, the first resistance, the second resistance, the 3rd resistance, the output terminal of modulation circuit connects one end of the first resistance and the second resistance respectively, the other end of the second resistance connects the positive pole of amplifier chip, with the other end ground connection of the first resistance after the negative pole of amplifier chip and the 3rd resistant series, the voltage output end of amplifier chip connects the input end of micro-duty cycle modulator;
Wherein, differential capacitor, produces electric signal for vehicle under the effect of acceleration;
Modulation circuit, carries out demodulation for the electric signal produced differential capacitor;
Amplifying circuit, for carrying out amplification process to the electric signal of modulation circuit demodulates;
Duty cycle modulator, for converting the square wave that dutycycle and acceleration are directly proportional to by the electric signal of amplification;
Computing unit, for going out the acceleration of vehicle according to the computation of Period of square wave;
Contrast unit, contrasts with setting threshold value for the vehicle acceleration calculated by computing unit, if exceed setting threshold value, then sends a signal to control module;
Control module, is sent to traffic monitoring department for the vehicle position information of being located by locating module by communication module.
2. the automatic position detecting system of a kind of traffic accident based on amplifying circuit according to claim 1, is characterized in that: described micro controller module adopts AVR series monolithic.
3. the automatic position detecting system of a kind of traffic accident based on amplifying circuit according to claim 1, is characterized in that: the chip model of described modulation circuit is CD4646.
4. the automatic position detecting system of a kind of traffic accident based on amplifying circuit according to claim 1, is characterized in that: described locating module adopts QD75 locating module.
5. the automatic position detecting system of a kind of traffic accident based on amplifying circuit according to claim 1, is characterized in that: the chip model of described communication module is TC35.
CN201510460287.0A 2015-07-31 2015-07-31 Car accident automatic positioning detection system based on amplification circuit Pending CN105160814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510460287.0A CN105160814A (en) 2015-07-31 2015-07-31 Car accident automatic positioning detection system based on amplification circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510460287.0A CN105160814A (en) 2015-07-31 2015-07-31 Car accident automatic positioning detection system based on amplification circuit

Publications (1)

Publication Number Publication Date
CN105160814A true CN105160814A (en) 2015-12-16

Family

ID=54801654

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510460287.0A Pending CN105160814A (en) 2015-07-31 2015-07-31 Car accident automatic positioning detection system based on amplification circuit

Country Status (1)

Country Link
CN (1) CN105160814A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003158433A (en) * 2001-11-20 2003-05-30 Shirinkusu Kk Amplifier circuit and photoelectric switch device
CN202193050U (en) * 2011-08-17 2012-04-18 胡鹏 Novel anti-collision system
CN104097575A (en) * 2014-07-17 2014-10-15 无锡市崇安区科技创业服务中心 Anti-collision alarming device for car reversing
CN203898304U (en) * 2014-06-09 2014-10-29 南京铁道职业技术学院 Electrocardio signal amplification circuit of monitoring instrument
CN104616427A (en) * 2014-11-28 2015-05-13 苏州市欧博锐自动化科技有限公司 Acceleration based automatic locating and alarming system for traffic accident
CN104656083A (en) * 2015-02-12 2015-05-27 无锡市崇安区科技创业服务中心 Ultrasonic distance measuring system having temperature compensation function and adopting pulse counting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003158433A (en) * 2001-11-20 2003-05-30 Shirinkusu Kk Amplifier circuit and photoelectric switch device
CN202193050U (en) * 2011-08-17 2012-04-18 胡鹏 Novel anti-collision system
CN203898304U (en) * 2014-06-09 2014-10-29 南京铁道职业技术学院 Electrocardio signal amplification circuit of monitoring instrument
CN104097575A (en) * 2014-07-17 2014-10-15 无锡市崇安区科技创业服务中心 Anti-collision alarming device for car reversing
CN104616427A (en) * 2014-11-28 2015-05-13 苏州市欧博锐自动化科技有限公司 Acceleration based automatic locating and alarming system for traffic accident
CN104656083A (en) * 2015-02-12 2015-05-27 无锡市崇安区科技创业服务中心 Ultrasonic distance measuring system having temperature compensation function and adopting pulse counting

Similar Documents

Publication Publication Date Title
CN103839444B (en) A kind of active anti-collision system based on truck traffic and method
CN204641663U (en) A kind of safety belt reminding device
CN102407816B (en) Early warning system and detection method for safety performance of large bus based on controller area network (CAN) bus
CN107444256A (en) A kind of automobile omnibearing collision avoidance system and its method
CN204801715U (en) Car blet auxiliary device
CN106627459B (en) A kind of automotive safety warning and accident alarming and localization method based on smart machine
CN202138330U (en) CAN (controller area network) bus based safety performance warning system for coach
CN104616427A (en) Acceleration based automatic locating and alarming system for traffic accident
CN202196514U (en) Intelligent vehicle-mounted terminal
CN102176275A (en) Vehicle collision detecting and treating system as well as detecting and treating method
CN103390326A (en) Car accident automatic positioning and alarming system
CN105046897A (en) Automatic traffic accident positioning and detection system
CN202896514U (en) Vehicle alarm system based on wireless communication network
CN202126747U (en) Vehicle-mounted traffic accident intelligent distress system
CN105160814A (en) Car accident automatic positioning detection system based on amplification circuit
CN105160804A (en) Automatic car accident location and detection system based on filter circuit
CN203391574U (en) Traffic safety control system based on tire pressure monitoring
CN104700656A (en) Expressway vehicle rear-end collision warning system based on Internet of things
CN106875711A (en) Car accident alarm device, system, method and motor vehicle
CN204719988U (en) A kind of front truck driver unsafe driving behavioral value device
CN205003850U (en) Long -range receiving arrangement of circular is handled in traffic violations
CN202855044U (en) Vehicle traffic accident automatic alarm system
CN204557726U (en) A kind of vehicle-mounted early warning, warning and distress system
CN203920737U (en) Vehicular intelligent prealarming brake system based on Internet of Things
CN202523175U (en) Traffic accident automatic positioning and alarm system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20151216