CN102798864A - Auxiliary annularly-connected multistate host-free parking system - Google Patents
Auxiliary annularly-connected multistate host-free parking system Download PDFInfo
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- CN102798864A CN102798864A CN2012103021034A CN201210302103A CN102798864A CN 102798864 A CN102798864 A CN 102798864A CN 2012103021034 A CN2012103021034 A CN 2012103021034A CN 201210302103 A CN201210302103 A CN 201210302103A CN 102798864 A CN102798864 A CN 102798864A
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Abstract
The invention relates to an auxiliary annularly-connected multistate host-free parking system which relates to an auxiliary parking system. The auxiliary annularly-connected multistate host-free parking system is provided with an ultrasonic ranging sensor, a transmission line and a power module, wherein the ultrasonic ranging sensor is provided with a power circuit, an uplink communication circuit, a downlink communication circuit, a transmission driving circuit, a piezoelectric ceramic sensor, a reception amplification circuit and a single chip; the output end of the uplink communication circuit is connected with the input end of the single chip; the transmission output end of the single chip is connected with the input end of the uplink communication circuit; the input end of the downlink communication circuit is connected with the output end of the single chip; the input end of the transmission driving circuit is connected with the output end of the single chip; the output end of the transmission driving circuit is connected with the input end of the piezoelectric ceramic sensor; the output end of the piezoelectric ceramic sensor is connected with the input end of the reception amplification circuit; the output end of the reception amplification circuit is connected with the input end of the single chip; the uplink communication circuit is connected with a superior ultrasonic ranging sensor; the output end of the downlink communication circuit is connected with an intra-annular ultrasonic ranging sensor; and one end of the transmission line is connected with the ultrasonic ranging sensor while the other end of the transmission line is connected with the power module.
Description
Technical field
The present invention relates to a kind of parking assisting system, especially relate to the annular connected mode of a kind of employing and ultrasonic ranging sensor (SENSOR) and be connected polymorphic host-free parking auxiliary system as the annular of digital communication main body.
Background technology
In order to remind the vehicle drive personnel, generally through mode driver assistance personnel such as audible alarm or distance display, to reach the purpose of safe driving.Existing ultrasound wave parking assisting system generally is made up of sensor, main frame, audible alarm unit, distance display unit, power supply and automobile interface etc.; Wherein require sensor to be laid in the vehicle body outside of automobile; On the bumper bar, main frame then is located in the car for example.Because the sensor number of using is more; And relatively disperse; Therefore transmission of the signal of sensor and main frame and power feed are very complicated; The technical scheme that adopts at present mainly contains direct connection, four-wire system, three-wire system and two-wire system, but the ubiquity system stability is relatively poor and cost than problems such as height.
Chinese patent CN1818714 provides a kind of reversing radar of vehicle; Comprise main control system, at least 1 probe; Main frame comprises power supply stabilization circuit; In the main frame, center processor connects ultrasound emission circuit and ultrasonic receiving circuit, and every road ultrasound emission circuit comprises the converter that transmits, the amplifier that transmits, hold the emission superimposer that is connected with the A of transmission line; Ultrasonic receiving circuit comprises electronic switch and Echo Processing circuit.Radar for backing car also comprises sensor module; It comprises the emission separation vessel and transmits stepup transformer; The B end of transmission line connects the emission separation vessel; And probe connects the stepup transformer that transmits, and also comprises echo superimposer and echo frequency-selecting prime amplifier, and ultrasonic receiving circuit comprises the echo separation circuit that is connected between transmission line A end and the electronic switch.
Chinese patent CN101078766 discloses a kind of contradiction low-cost and high stability, two-line three-state parking assistant system of the digital transmission design proposal of employing two-line three-state of solving in the parking assisting system.Be provided with main frame, sensor and transmission line; Main frame is provided with sensor feed circuit, main frame radiating circuit, single-chip microcomputer, ternary level extraction circuit and Echo Processing circuit.Sensor is provided with power circuit, receiving and transmitting signal buffer circuit, emission driving circuit, piezoceramic transducer, reception amplifying circuit, digital signal change-over circuit and ternary signal driving circuit, and main frame is to the shared transmission line of the signal wire of communication between feed line, main frame and the sensor of sensor.
Summary of the invention
The object of the present invention is to provide that a kind of stability is higher, cost is lower, reaction velocity faster annular connect polymorphic host-free parking auxiliary system.
The present invention is provided with ultrasonic ranging sensor, transmission line and power module.
Said ultrasonic ranging sensor is provided with power circuit, uplink communication circuit, downgoing communication circuit, emission driving circuit, piezoceramic transducer, reception amplifying circuit and single-chip microcomputer; The input end of said power circuit is connected with automobile power source through power module, and the output terminal of power circuit is electrically connected with uplink communication circuit, downgoing communication circuit, emission driving circuit, piezoceramic transducer, reception amplifying circuit and single-chip microcomputer respectively; The output terminal of uplink communication circuit is connected with the single-chip microcomputer input end, and the transmission output terminal of single-chip microcomputer is connected with the input end of uplink communication circuit, and the input end of downgoing communication circuit is connected with the single-chip microcomputer output terminal; The input end of emission driving circuit is connected with the output terminal of single-chip microcomputer; The output terminal of emission driving circuit is connected with the piezoceramic transducer input end; The output terminal of piezoceramic transducer is connected with the input end that receives amplifying circuit, and the output terminal that receives amplifying circuit is connected with the input end of single-chip microcomputer;
The uplink communication circuit is connected (the output alarm cell sensor is connected with power module, as the warning output unit) with higher level's ultrasonic ranging sensor; Ultrasonic ranging sensor in the output terminal T-Ring of downgoing communication circuit; Said transmission line one end connects the ultrasonic ranging sensor, and the transmission line other end connects power module.
The present invention sets: what signal wire directly connected power module is the output alarm cell sensor, other be ultrasonic ranging sensor in the ring.
The present invention sets: adopt annular to connect between each sensor, the wire harness that sensor connects a wherein tie point is also received power module.
Said alarm unit preferably is provided with audible alarm circuit and distance display circuit.
Said power module preferably is provided with the voltage conversion circuit that is used for automobile power source is converted to the supply voltage of ultrasonic ranging sensor use.
Said ultrasonic ranging sensor is connected with the output unit sensor through the uplink communication circuit, the ultrasonic ranging sensor through downgoing communication circuit (the downgoing communication circuit away from the alarm unit tactility apparatus connects mutually) with encircle interior ultrasonic ranging sensor and be connected away from the output alarm unit.
The present invention adopts ultrasonic ranging sensor closed loop connection; Do not establish the radar for backing car main frame; Adopt the ultrasonic ranging sensor as the digital communication main body; Be responsible for the communication and the computing of ultrasonic ranging sensor in the ring, accomplish the parking radar systemic-function, have polymorphic management simultaneously: promptly adopt an independent emission or a plurality of sensor to launch hyperacoustic signal simultaneously; Adopt the sensor of one or more frequency of operation.
The ultrasonic ranging sensor is used to send informs ring inner sensor operating state data or listens and to fetch data; To confirm to start the ultrasound wave of ultrasonic ranging sensor emission CF in good time; And handle the echo of ultrasonic ranging sensor, the distance of coming the disturbance in judgement thing through single-chip microcomputer.
This shows that compare with existing parking assisting system, the present invention has following outstanding advantage:
1) the ultrasonic ranging sensor adopts annular to connect.
2) realize polymorphic work management (the ultrasonic ranging sensor is emission or a plurality of emission simultaneously separately, and receives the processing echo).
3) reaction velocity is faster.
4) stable performance: owing to all use the digital signal communication between ultrasonic ranging sensor and the ultrasonic ranging sensor, the reliability height, antijamming capability is strong, and signal amplification etc. has been handled in the ultrasonic ranging sensor; In addition polymorphic management, sensor scan speed is faster, more stable (traditional be designed to launch one by one work, the time that run-down needs is longer, and a plurality of emissions simultaneously receive simultaneously and handle, and make that sweep time short, so speed is fast, and stable performance).
5) installation is more convenient, automatic moulding.
Description of drawings
Fig. 1 is the circuit composition frame chart of the embodiment of the invention.
Fig. 2 is the ultrasonic ranging sensor circuit theory of constitution figure of the embodiment of the invention.
Fig. 3 is the power module circuitry theory of constitution figure of the embodiment of the invention.
Below provide each mark among Fig. 1: power circuit 111, uplink communication circuit 112 (the output alarm cell sensor is the warning output driving circuit), single-chip microcomputer 113, emission driving circuit 114, downgoing communication circuit 115, reception amplifying circuit 116 and piezoceramic transducer 117;
Single-chip microcomputer 113 output terminals 1 output signal is to emission driving circuit 114;
Single-chip microcomputer 113 output signal ends 2 transmit a signal to uplink communication 112;
Single-chip microcomputer 113 input signal ends 5 receive the signal that uplink communication 112 is returned;
Single-chip microcomputer 113 output signal ends 3 receive and transmit a signal to downgoing communication circuit 115;
The input end 4 of single-chip microcomputer 113 receives self ultrasonic signal and amplifies the signal of returning.
Embodiment
Following examples will combine accompanying drawing that the present invention is further described.
Referring to Fig. 1, the embodiment of the invention is provided with ultrasonic ranging sensors A, transmission line and power module 101 (being both 101 also as alarm unit).
Said ultrasonic ranging sensors A is provided with power circuit 111, uplink communication circuit 112 (being the warning output unit at 115 of higher level's sensor), downgoing communication circuit 115, emission driving circuit 114, piezoceramic transducer 117, receives amplifying circuit 116 and single-chip microcomputer 113; The input end of said power circuit 111 is connected with automobile power source through power module 101, and the output terminal of power circuit 111 is electrically connected with uplink communication circuit 112, downgoing communication circuit 115, emission driving circuit 114, piezoceramic transducer 117, reception amplifying circuit 116 and single-chip microcomputer 113 respectively; The output terminal of uplink communication circuit 112 is connected with single-chip microcomputer 113 input ends, and the transmission output terminal of single-chip microcomputer 113 is connected with the input end of uplink communication circuit 112, and the input end of downgoing communication circuit 115 is connected with single-chip microcomputer 113 output terminals; The input end of emission driving circuit 114 is connected with the output terminal of single-chip microcomputer 113; The output terminal of emission driving circuit 114 is connected with piezoceramic transducer 117 input ends; The output terminal of piezoceramic transducer 117 is connected with the input end that receives amplifying circuit 116, and the output terminal that receives amplifying circuit 116 is connected with the input end of single-chip microcomputer 113;
The present invention sets: what signal wire directly connected power module 101 is the output alarm cell sensor, other be ultrasonic ranging sensor in the ring.
The present invention sets: adopt annular to connect between each sensor, the wire harness that sensor connects a wherein tie point is also received power module.
Said alarm unit preferably is provided with audible alarm circuit and distance display circuit.
Said power module preferably is provided with the voltage conversion circuit that is used for automobile power source is converted to the supply voltage of ultrasonic ranging sensor use.
Said ultrasonic ranging sensors A is connected with the output unit sensor through uplink communication circuit 112, the ultrasonic ranging sensor through downgoing communication circuit 115 (the downgoing communication circuit 115 away from the alarm unit tactility apparatus connects mutually) with encircle interior ultrasonic ranging sensor and be connected away from the output alarm unit.
This is to be provided with ultrasonic ranging sensors A, transmission line, alarm unit, power module in the ring, one-level higher level ultrasonic ranging sensor and one-level subordinate ultrasonic ranging sensor at least at least.
The embodiment of the invention adopts 4 ultrasonic ranging sensors, and two power leads are connected with power module, and power module is also received in the automobile power supply, and other is a communication terminal, the abutment ring inner sensor.
Fig. 2 provides the power module circuitry theory of constitution figure of the embodiment of the invention.
In Fig. 2, diode D1, inductance L 1, capacitor C 01, C02, C03, C04, C05, C06, C07, resistance R 01, thermistor PI, the power module 101 in the composition diagrams 1 such as voltage stabilizing chip U1 is for the ultrasonic ranging sensor provides the working point power supply.
Fig. 3 provides the ultrasonic ranging sensor circuit theory of constitution figure of the embodiment of the invention, in Fig. 3, only provides a ultrasonic ranging sensor, and other ultrasonic ranging sensor is similar; In Fig. 3, inductance L 1, capacitor C 11, C12, C13, C14, C15, resistance R 11, thermistor P1, the power circuit 111 in the composition diagrams 1 such as voltage stabilizing chip U3 is for the ultrasonic ranging sensor provides the energy.
Resistance R 12, R32, capacitor C 38, C21, C22, middle all T1, inductance L 2, the emission driving circuit 114 in the composition diagrams 1 such as triode Q11.
Amplifier U1, feedback resistance R27, R24 and peripheral circuit etc. form reception amplifying circuit 116.
Resistance R 14, R16, R15, R12, R18, triode Q2, capacitor C 33 grades are formed uplink communication circuit 112, at higher level's sensor as the warning output unit.
Resistance R 3, R39, the downgoing communication circuit 115 in capacitor C 35 composition diagrams such as grade 1.
Below provide system operating mode of the present invention:
The ultrasonic ranging sensor is through downgoing communication circuit 115 and subordinate's ultrasonic ranging sensor 103 communications in the ring, simultaneously with higher level's ultrasonic ranging sensor 102 communications near power module 101.Subordinate's ultrasonic ranging sensor 103 determines whether start working through the data with the interior ultrasonic ranging sensors A communication of ring, and data are passed to warning ultrasonic ranging sensor in the ring through the uplink communication circuit 112 of self with downgoing communication circuit 115.Warning output unit ultrasonic ranging sensor is handled from the distance signal of ultrasonic ranging sensor and the range data of the barrier of interior ultrasonic ranging sensor 103 reports of ring etc. self receiving barrier; And, play the purpose that auxiliary security is driven through uplink communication circuit 112 (this moment is as the alerting signal output unit) warning reminding human pilot.
The principle of work of ultrasonic ranging sensor is following:
When piezoceramic transducer 117 received the ultrasound wave that reflects, piezoceramic transducer 117 produced faint electric signal, and this electric signal amplifies the back to single-chip microcomputer 113 through the reception amplifying circuit 116 of U1 and peripheral circuit.Single-chip microcomputer 113 reflects the distance of hyperacoustic mistiming dyscalculia thing from the ultrasonic ranging sensor through judging the emission ultrasound wave with receiving.
The present invention adopts has polymorphic management: promptly adopt an independent emission or a plurality of sensor to launch ultrasonic signal simultaneously; Adopt the ultrasonic sensor of one or more frequency of operation; Adopt annular to connect between each sensor, the wire harness that sensor connects a wherein tie point is also received power module or is claimed alarm unit.
Claims (4)
1. annular connects polymorphic host-free parking auxiliary system, it is characterized in that being provided with ultrasonic ranging sensor, transmission line and power module;
Said ultrasonic ranging sensor is provided with power circuit, uplink communication circuit, downgoing communication circuit, emission driving circuit, piezoceramic transducer, reception amplifying circuit and single-chip microcomputer; The input end of said power circuit is connected with automobile power source through power module, and the output terminal of power circuit is electrically connected with uplink communication circuit, downgoing communication circuit, emission driving circuit, piezoceramic transducer, reception amplifying circuit and single-chip microcomputer respectively; The output terminal of uplink communication circuit is connected with the single-chip microcomputer input end, and the transmission output terminal of single-chip microcomputer is connected with the input end of uplink communication circuit, and the input end of downgoing communication circuit is connected with the single-chip microcomputer output terminal; The input end of emission driving circuit is connected with the output terminal of single-chip microcomputer; The output terminal of emission driving circuit is connected with the piezoceramic transducer input end; The output terminal of piezoceramic transducer is connected with the input end that receives amplifying circuit, and the output terminal that receives amplifying circuit is connected with the input end of single-chip microcomputer;
The uplink communication circuit is connected with higher level's ultrasonic ranging sensor; Ultrasonic ranging sensor in the output terminal T-Ring of downgoing communication circuit; Said transmission line one end connects the ultrasonic ranging sensor, and the transmission line other end connects power module.
2. annular as claimed in claim 1 connects polymorphic host-free parking auxiliary system, it is characterized in that said alarm unit is provided with audible alarm circuit and distance display circuit.
3. annular as claimed in claim 1 connects polymorphic host-free parking auxiliary system, it is characterized in that said power module is provided with the voltage conversion circuit that is used for automobile power source is converted to the supply voltage of ultrasonic ranging sensor use.
4. annular as claimed in claim 1 connects polymorphic host-free parking auxiliary system; It is characterized in that said ultrasonic ranging sensor is connected with the output unit sensor through the uplink communication circuit, the ultrasonic ranging sensor is connected through the interior ultrasonic ranging sensor away from the output alarm unit of downgoing communication circuit and ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103021034A CN102798864A (en) | 2012-08-22 | 2012-08-22 | Auxiliary annularly-connected multistate host-free parking system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103021034A CN102798864A (en) | 2012-08-22 | 2012-08-22 | Auxiliary annularly-connected multistate host-free parking system |
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| CN102798864A true CN102798864A (en) | 2012-11-28 |
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| CN2012103021034A Pending CN102798864A (en) | 2012-08-22 | 2012-08-22 | Auxiliary annularly-connected multistate host-free parking system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499817A (en) * | 2013-10-18 | 2014-01-08 | 柳州市华航电器有限公司 | Intelligent reversing radar system and automatic control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726739A (en) * | 2009-11-20 | 2010-06-09 | 柯文河 | Host-free parking auxiliary system |
| CN201555951U (en) * | 2009-11-20 | 2010-08-18 | 柯文河 | Parking auxiliary system |
| CN102445693A (en) * | 2011-09-30 | 2012-05-09 | 柯文河 | Gradual parking auxiliary system |
-
2012
- 2012-08-22 CN CN2012103021034A patent/CN102798864A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726739A (en) * | 2009-11-20 | 2010-06-09 | 柯文河 | Host-free parking auxiliary system |
| CN201555951U (en) * | 2009-11-20 | 2010-08-18 | 柯文河 | Parking auxiliary system |
| CN102445693A (en) * | 2011-09-30 | 2012-05-09 | 柯文河 | Gradual parking auxiliary system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499817A (en) * | 2013-10-18 | 2014-01-08 | 柳州市华航电器有限公司 | Intelligent reversing radar system and automatic control method thereof |
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Application publication date: 20121128 |