CN202837545U - Ring-shaped-connection multistate host-computer-free parking auxiliary system - Google Patents
Ring-shaped-connection multistate host-computer-free parking auxiliary system Download PDFInfo
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- CN202837545U CN202837545U CN 201220421618 CN201220421618U CN202837545U CN 202837545 U CN202837545 U CN 202837545U CN 201220421618 CN201220421618 CN 201220421618 CN 201220421618 U CN201220421618 U CN 201220421618U CN 202837545 U CN202837545 U CN 202837545U
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- measuring sensor
- ultrasonic distance
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Abstract
A ring-shaped-connection multistate host-computer-free parking auxiliary system relates to a parking auxiliary system. The ring-shaped-connection multistate host-computer-free parking auxiliary system is provided with an ultrasonic ranging sensor, a transmission line and a power supply module. The ultrasonic ranging sensor is provided with a power supply circuit, an uplink communication circuit, a downlink communication circuit, a transmitting drive circuit, a piezoelectric ceramic sensor, a receiving amplifying circuit and a single-chip microcomputer; an output end of the uplink communication circuit is connected with an input end of the single-chip microcomputer; a transmitting output end of the single-chip microcomputer is connected with an input end of the uplink communication circuit; an input end of the downlink communication circuit is connected with an output end of the single-chip microcomputer; an input end of the transmitting drive circuit is connected with the output end of the single-chip microcomputer; an output end of the transmitting drive circuit is connected with an input end of the piezoelectric ceramic sensor; an output end of the piezoelectric ceramic sensor is connected with an input end of the receiving amplifying circuit; an output end of the receiving amplifying circuit is connected with the input end of the single-chip microcomputer; the uplink communication circuit is connected with an upper-level ultrasonic ranging sensor; the output end of the downlink communication circuit is connected with an in-ring ultrasonic ranging sensor; one end of the transmission line is connected with the ultrasonic ranging sensor; and the other end of the transmission line is connected with the power supply module.
Description
Technical field
The utility model relates to a kind of parking assisting system, especially relates to the annular connected mode of a kind of employing and is connected SENSOR with ultrasonic distance-measuring sensor) connect 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 by auxiliary human pilots of mode such as audible alarm or distance demonstrations, to reach the purpose of safe driving.Existing ultrasound wave parking assisting system is generally by sensor, main frame, audible alarm unit, form apart from 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 number of probes that uses is more, and relatively disperse, therefore the 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 problem such as the ubiquity system stability is relatively poor and cost is higher.
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 emission separation vessel and the stepup transformer that transmits, the B end of transmission line connects the emission separation vessel, and probe connects the stepup transformer that transmits, also comprise echo superimposer and echo frequency-selecting prime amplifier, ultrasonic receiving circuit comprises the echo free circuit that is connected between transmission line A end and the electronic switch.
Chinese patent CN101078766 discloses a kind of contradiction that solves low-cost in the parking assisting system and high stability, adopts the two-line three-state parking assistant system of the digital Transmission Design scheme of two-line three-state.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 shares a transmission line to the signal wire of communication between feed line, main frame and the sensor of sensor.
Summary of the invention
The purpose of this utility model 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 utility model is provided with ultrasonic distance-measuring sensor, transmission line and power module.
Described ultrasonic distance-measuring 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 described power circuit is connected with automobile power source by 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 distance-measuring sensor; Ultrasonic distance-measuring sensor in the output terminal T-Ring of downgoing communication circuit; Described transmission line one end connects ultrasonic distance-measuring sensor, and the transmission line other end connects power module.
The utility model is set: what signal wire directly connected power module is the output alarm cell sensor, other be ultrasonic distance-measuring sensor in the ring.
The utility model is set: adopt annular to connect between each sensor, the wire harness that sensor connects a wherein tie point is also received power module.
Described alarm unit preferably is provided with the audible alarm circuit and apart from display circuit.
Described power module preferably is provided with the voltage conversion circuit for the supply voltage that automobile power source is converted to the ultrasonic distance-measuring sensor use.
Described ultrasonic distance-measuring sensor is connected with the output unit sensor by the uplink communication circuit, ultrasonic distance-measuring sensor by downgoing communication circuit (the downgoing communication circuit away from the alarm unit tactility apparatus is connected to each other) with encircle interior ultrasonic distance-measuring sensor away from the output alarm unit and be connected.
The utility model adopts ultrasonic distance-measuring sensor closed loop connection, do not establish the radar for backing car main frame, adopt ultrasonic distance-measuring sensor as the digital communication main body, be responsible for communication and the computing of ultrasonic distance-measuring sensor in the ring, finish the parking radar systemic-function, have simultaneously polymorphic management: namely adopt an independent emission or a plurality of sensor to launch simultaneously hyperacoustic signal; Adopt the sensor of one or more frequency of operation.
Ultrasonic distance-measuring sensor is used for sending informs ring inner sensor operating state data or listens and fetch data, to determine to start the ultrasound wave of ultrasonic distance-measuring sensor emission characteristic frequency in good time, and process the echo of ultrasonic distance-measuring sensor, come the distance of disturbance in judgement thing by single-chip microcomputer.
This shows, compare with existing parking assisting system, the utlity model has following outstanding advantages:
1) ultrasonic distance-measuring sensor adopts annular to connect.
2) realize polymorphic work management (ultrasonic distance-measuring sensor is launched separately or a plurality of simultaneously emission, and the reception ﹠ disposal echo).
3) reaction velocity is faster.
4) stable performance: owing to all use digital communication between ultrasonic distance-measuring sensor and the ultrasonic distance-measuring sensor, the reliability height, antijamming capability is strong, and signal amplification etc. has been processed in ultrasonic distance-measuring 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, a plurality of simultaneously emissions, and reception ﹠ disposal simultaneously, so that sweep time is short, so speed is fast, stable performance).
5) installation is more convenient, automatic moulding.
Description of drawings
Fig. 1 is the electric circuit constitute block diagram of the utility model embodiment.
Fig. 2 is the ultrasonic distance-measuring sensor the electric circuit constitute schematic diagram of the utility model embodiment.
Fig. 3 is the power module circuitry theory of constitution figure of the utility model embodiment.
Below provide each mark among Fig. 1: power circuit 111, uplink communication circuit 112(output alarm cell sensor are the warning output driving circuit), single-chip microcomputer 113, emission driving circuit 114, downgoing communication circuit 115, receive 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 are further described the utility model in connection with accompanying drawing.
Referring to Fig. 1, the utility model embodiment is provided with ultrasonic distance-measuring sensor A, transmission line and power module 101(and is both 101 also as alarm unit).
Described ultrasonic distance-measuring sensor A is provided with power circuit 111, uplink communication circuit 112(and is the warning output unit at 115 of higher level's sensor), downgoing communication circuit 115, emission driving circuit 114, piezoceramic transducer 117, receive amplifying circuit 116 and single-chip microcomputer 113; The input end of described power circuit 111 is connected with automobile power source by 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;
Uplink communication circuit 112 is connected (the output alarm cell sensor is connected with power module 101, as the warning output unit) with higher level's ultrasonic distance-measuring sensor 102; Ultrasonic distance-measuring sensor 103 in the output terminal T-Ring of downgoing communication circuit 115; Described transmission line one end connects ultrasonic distance-measuring sensor, and the transmission line other end connects power module.
The utility model is set: what signal wire directly connected power module 101 is the output alarm cell sensor, other be ultrasonic distance-measuring sensor in the ring.
The utility model is set: adopt annular to connect between each sensor, the wire harness that sensor connects a wherein tie point is also received power module.
Described alarm unit preferably is provided with the audible alarm circuit and apart from display circuit.
Described power module preferably is provided with the voltage conversion circuit for the supply voltage that automobile power source is converted to the ultrasonic distance-measuring sensor use.
Described ultrasonic distance-measuring sensor A is connected with the output unit sensor by uplink communication circuit 112, and ultrasonic distance-measuring sensor is connected to each other away from the downgoing communication circuit 115 of alarm unit tactility apparatus by downgoing communication circuit 115() with encircle interior ultrasonic distance-measuring sensor away from the output alarm unit and be connected.
This is to be provided with ultrasonic distance-measuring sensor A, transmission line, alarm unit, power module in the ring, at least one-level higher level ultrasonic distance-measuring sensor and one-level subordinate ultrasonic distance-measuring sensor at least.
The utility model embodiment adopts 4 ultrasonic distance-measuring sensors, and two power leads are connected with power module, and power module is also received in the automobile power supply, and other is communication terminal, the abutment ring inner sensor.
Fig. 2 provides the power module circuitry theory of constitution figure of the utility model embodiment.
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 ultrasonic distance-measuring sensor provides the working point power supply.
Fig. 3 provides the ultrasonic distance-measuring sensor the electric circuit constitute schematic diagram of the utility model embodiment, in Fig. 3, only provides a ultrasonic distance-measuring sensor, and other ultrasonic distance-measuring 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 ultrasonic distance-measuring 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 form 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 utility model:
Ultrasonic distance-measuring sensor is by downgoing communication circuit 115 and 103 communications of subordinate's ultrasonic distance-measuring sensor in the ring, simultaneously with higher level's ultrasonic distance-measuring sensor 102 communications near power module 101.Subordinate's ultrasonic distance-measuring sensor 103 by with ring in the data of ultrasonic distance-measuring sensor A communication determine whether to start working, and uplink communication circuit 112 and downgoing communication circuit 115 that data communication device is crossed self are passed to warning ultrasonic distance-measuring sensor in the ring.Warning output unit ultrasonic distance-measuring sensor is processed self receive barrier from the distance signal of ultrasonic distance-measuring sensor and the range data of the barrier that ultrasonic distance-measuring sensor 103 is reported in encircling etc., and pass through uplink communication circuit 112(at this moment as the alerting signal output unit) the warning reminding human pilot, play the purpose that auxiliary security is driven.
The principle of work of ultrasonic distance-measuring sensor is as follows:
Uplink communication circuit 112 and downgoing communication circuit 115 are the mongline bidirectional communication, the output alarm cell sensor 112 that connects power module is warning output, has single-chip microcomputer output to drive when reporting to the police and drives warning system outside the Q2 line or export (output alarm cell sensor) as the alerting signal communication.When sending data, the square-wave signal of single-chip microcomputer 113 output data sends data by connection; When receive data, single-chip microcomputer 113 is by resistance R 17 receive datas.When needs emission ultrasound wave, the square-wave signal of single-chip microcomputer output fixed frequency drives triode Q11.When single-chip microcomputer output high level, triode Q11 conducting, current collection is low level very; When the single-chip microcomputer output low level, triode Q11 cut-off, current collection is high level very.The primary coil of charging and discharging currents by middle all transformers, this signal is through transformer rear drive ultrasonic distance-measuring sensor emission ultrasound wave that boosts.
When piezoceramic transducer 117 received the ultrasound wave that reflects, piezoceramic transducer 117 produced faint electric signal, arrived single-chip microcomputer 113 after reception amplifying circuit 116 amplifications of this electric signal through U1 and peripheral circuit.Single-chip microcomputer 113 reflects hyperacoustic mistiming dyscalculia thing from the distance of ultrasonic distance-measuring sensor by judging the emission ultrasound wave and receiving.
The utility model adopts has polymorphic management: namely adopt an independent emission or a plurality of sensor to launch simultaneously ultrasonic signal; 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. an annular connects polymorphic host-free parking auxiliary system, it is characterized in that being provided with ultrasonic distance-measuring sensor, transmission line and power module;
Described ultrasonic distance-measuring 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 described power circuit is connected with automobile power source by 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 distance-measuring sensor; Ultrasonic distance-measuring sensor in the output terminal T-Ring of downgoing communication circuit; Described transmission line one end connects ultrasonic distance-measuring sensor, and the transmission line other end connects power module.
2. a kind of annular as claimed in claim 1 connects polymorphic host-free parking auxiliary system, it is characterized in that described alarm unit is provided with the audible alarm circuit and apart from display circuit.
3. a kind of annular as claimed in claim 1 connects polymorphic host-free parking auxiliary system, it is characterized in that described power module is provided with the voltage conversion circuit for the supply voltage that automobile power source is converted to the ultrasonic distance-measuring sensor use.
4. a kind of annular as claimed in claim 1 connects polymorphic host-free parking auxiliary system, it is characterized in that described ultrasonic distance-measuring sensor is connected with the output unit sensor by the uplink communication circuit, ultrasonic distance-measuring sensor is connected by the interior ultrasonic distance-measuring sensor away from the output alarm unit of downgoing communication circuit and ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220421618 CN202837545U (en) | 2012-08-22 | 2012-08-22 | Ring-shaped-connection multistate host-computer-free parking auxiliary system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220421618 CN202837545U (en) | 2012-08-22 | 2012-08-22 | Ring-shaped-connection multistate host-computer-free parking auxiliary system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202837545U true CN202837545U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220421618 Expired - Fee Related CN202837545U (en) | 2012-08-22 | 2012-08-22 | Ring-shaped-connection multistate host-computer-free parking auxiliary system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202837545U (en) |
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2012
- 2012-08-22 CN CN 201220421618 patent/CN202837545U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20160822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |