CN102542792B - Method and device for achieving vehicle inspection device sharing through level signal conversion - Google Patents
Method and device for achieving vehicle inspection device sharing through level signal conversion Download PDFInfo
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- CN102542792B CN102542792B CN201110452898.2A CN201110452898A CN102542792B CN 102542792 B CN102542792 B CN 102542792B CN 201110452898 A CN201110452898 A CN 201110452898A CN 102542792 B CN102542792 B CN 102542792B
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Abstract
The invention discloses a method and a device for achieving vehicle inspection device sharing through level signal conversion. The method can comprise the steps of receiving level signals generated by a vehicle inspection device and enabling the level signals to be converted into a plurality of different level signals, and enabling the plurality of different level signals to be respectively output to a plurality of systems capable of identifying corresponding level signals. The method and the device can enable the level signals generated by the vehicle inspection device to be converted into different types of level signals, and output the level signals to the plurality of systems capable of identifying the corresponding level signals, thereby being capable of achieving vehicle inspection device sharing, saving construction cost and maintenance cost.
Description
Technical field
The present invention relates to technical field of traffic control, be specifically related to a kind of by level signal conversion realize vehicle checker share method and device.
Background technology
Be typically provided with signal lamp control system and traffic electronic police system equipment at traffic intersection, be respectively used to control the traffic lights at crossing and carry out candid photograph evidence obtaining to illegal vehicular traffic.In practical application, signal lamp control system is in order to more intelligent control signal lamp, usually on track, the magnitude of traffic flow that the vehicle checker connecting ground induction coil adds up this track is laid, and traffic electronic police system is in order to judge whether vehicle makes a dash across the red light, on track, usually also lays vehicle checker vehicle is crossed the border judgement.The feature of vehicle checker is: when sensing that vehicle enters ground induction coil, output signal is for being Low ESR over the ground, and when sensing that vehicle leaves ground induction coil, output signal is over the ground in high impedance.
If this two cover system needs the information obtaining same track, current way is, is respectively the vehicle checker that signal lamp control system and traffic electronic police system lay respective system on same track.The means of communication used due to each system are different, and the signal of vehicle checker can not be shared, cause in same track need two cover vehicle checkers repeat lay, not only increase equipment cost, too increase the maintenance cost of system.
Summary of the invention
Fundamental purpose of the present invention be to provide a kind of by level signal conversion realize vehicle checker share method, vehicle checker can be shared.
The present invention propose a kind of by level signal conversion realize vehicle checker share method, comprise step:
The level signal receiving vehicle checker generation is converted to multiple different level signal;
Described multiple different level signal is exported to respectively multiple can the system of the corresponding level signal of identification.
Preferably, described multiple different level signal comprises the first level signal and second electrical level signal;
Described conversion is carried out respectively by the first change-over circuit and the second change-over circuit.
Preferably, describedly can the system of the corresponding level signal of identification to comprise:
Signal lamp control system or electronic police system.
Preferably, described first change-over circuit comprises:
R1；
Described second change-over circuit comprises:
Metal-oxide-semiconductor Q1, optocoupler P1 and resistance R2, the grid access vehicle checker signal of described metal-oxide-semiconductor Q1, source ground, draining is connected to optocoupler P1 by resistance R2.
The present invention also propose a kind of by level signal conversion realize vehicle checker share device, comprising:
Level conversion unit, the level signal produced for receiving vehicle checker is converted to multiple different level signal;
Signal output unit, for described multiple different level signal is exported to respectively multiple can the system of the corresponding level signal of identification.
Preferably, described level conversion unit comprises the first change-over circuit and the second change-over circuit; Described multiple different level signal comprises the first level signal and second electrical level signal.
Preferably, describedly the system of level signal can to comprise described in identification:
Signal lamp control system or electronic control system.
Preferably, described first change-over circuit comprises:
R1；
Described second change-over circuit comprises:
Metal-oxide-semiconductor Q1, optocoupler P1 and resistance R2, the grid access vehicle checker signal of described metal-oxide-semiconductor Q1, source ground, draining is connected to optocoupler P1 by resistance R2.
The level signal that vehicle checker produces can be converted to the level signal of number of different types by the present invention, exports to multiplely in the system of the corresponding level signal of identification, thus can to realize sharing of vehicle checker, saves construction cost and maintenance cost.
Accompanying drawing explanation
Fig. 1 is that the present invention realizes steps flow chart schematic diagram in shared method one embodiment of vehicle checker by level signal conversion;
Fig. 2 is that the present invention realizes overall system architecture schematic diagram in shared method one embodiment of vehicle checker by level signal conversion;
To be the present invention realize by level signal conversion the electrical block diagram that realizes in method one embodiment that vehicle checker shares changing to Fig. 3;
Fig. 4 is that the present invention realizes structural representation in shared device one embodiment of vehicle checker by level signal conversion;
The structural representation of Fig. 5 to be the present invention by level signal conversion realize level conversion unit in device one embodiment that vehicle checker shares.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, the present invention propose a kind of by level signal conversion realize vehicle checker share method one embodiment.The method can comprise:
The level signal that step S10, reception vehicle checker produce is converted to multiple different level signal;
Step S11, described multiple different level signal exported to respectively multiple can the system of the corresponding level signal of identification.
Pedestals signal can be can be to the testing result that vehicle checker produces in the present embodiment, by this level signal being converted to the level signal of number of different types, exporting to and multiplely in the system of the corresponding level signal of identification, thus can realize sharing of vehicle checker.This pedestals signal can be passive on-off model; The plurality of dissimilar level signal can be the level signal of the different voltage such as 3.3V level signal and 5V level signal or passive on-off model; This system can be signal lamp control system or electronic police system etc.
With reference to Fig. 2, this vehicle checker 110 is by detecting the pedestals signal produced, after level conversion, formed respectively this signal lamp control system 111 and electronic police system 112 can the level signal of identification, and export this signal lamp control system 111 and electronic police system 112 respectively to, make this signal lamp control system 111 and electronic police system 112 can share a vehicle checker 110, save the quantity of vehicle checker 110, while reducing cost of products, the cost of product maintenance can be also reduced.
Conversion in the present embodiment, can be converted to the first dissimilar level signal and second electrical level signal by pedestals signal; And this conversion can be carried out respectively by the first change-over circuit and the second change-over circuit.
Such as: usually signal lamp control system 111 is 24V level signal for wagon detector collection, and electronic police system 112 needs the level signal gathering 3.3V, but also there is the contrary situation of corresponding logical relationship.Signal lamp control system 111 requires that vehicle checker 110 is input to respective signal lamp control system 111 input interface level and is: have vehicle by time be input to signal lamp control system 111 for low level conducting over the ground, do not have vehicle by time be high-impedance state; Electronic police system 112 require vehicle checker 110 have vehicle by time export high-impedance state and end over the ground, do not have vehicle by time output low level conducting over the ground.
With reference to Fig. 3, above-mentioned first change-over circuit comprises: R1.Above-mentioned second change-over circuit comprises: metal-oxide-semiconductor Q1, optocoupler P1 and resistance R2, the grid of described metal-oxide-semiconductor Q1 access vehicle checker signal, source ground, drains to be connected to optocoupler P1 by resistance R2.
DETA0 is the level signal that vehicle checker 110 produces, and accesses electronic police system 112 through pull-up resistor R1, DETA0.When having vehicle in time being detected by vehicle checker 110, under pull-up resistor R1 effect, DETA0 is high level 3.3V, and when vehicle leaves, DETA0 is low level 0.Wherein pull-up resistor R1 outputs signal DETA0 to vehicle checker 110 and changes rear output.
DETA0 accesses signal lamp control system 111.When there being car to be high level through out-of-date DETA0, Q1 conducting, at this moment optocoupler P1 works, and DETA0_S over the ground conducting is low level; When vehicle leaves, DETA0 is that low level 0, Q1 is ended, and at this moment optocoupler does not work, and DETA0_S is high-impedance state.Wherein resistance R2 and optocoupler P1 outputs signal machine DETA0 to vehicle checker 110 and changes rear output.
The shared method of vehicle checker 110 is realized above by level signal conversion, can by same vehicle checker 110 outputs level signals on track, by level conversion for two can respectively by the level signal of signal lamp control system 111 and 112 identifications of traffic electronic police system, and export this signal lamp control system and traffic electronic police system respectively to, thus realize sharing of vehicle checker 110, save the erection quantity of vehicle checker 110, save construction cost, and the maintenance cost of signal lamp control system 111 or electronic police system 112 also reduces.
With reference to Fig. 4, the present invention also provides a kind of and realizes shared device 20 1 embodiment of vehicle checker by level signal conversion.This device 20 can comprise: level conversion unit 21 and signal output unit 22; This level conversion unit 21, the level signal produced for receiving vehicle checker 110 is converted to multiple different level signal; This signal output unit 22, for described multiple different level signal is exported to respectively multiple can the system of the corresponding level signal of identification.
Pedestals signal can be can be to the testing result that vehicle checker 110 produces in the present embodiment, by this level signal being converted to the level signal of number of different types, export to and multiplely in the system of the corresponding level signal of identification, thus can realize sharing of vehicle checker 110.This pedestals signal can be passive on-off model; The plurality of dissimilar level signal can be the level signal of the different voltage such as 3.3V level signal and 5V level signal or passive on-off model; This system can be signal lamp control system 111 or electronic police system 112 etc.
This vehicle checker 110 is by detecting the pedestals signal produced, after level conversion, formed respectively this signal lamp control system 111 and electronic police system 112 can the level signal of identification, and export this signal lamp control system 111 and electronic police system 112 respectively to, make this signal lamp control system 111 and electronic police system 112 can share a vehicle checker 110, save the quantity of vehicle checker 110, while reducing cost of products, the cost of product maintenance can be also reduced.
Conversion in the present embodiment, can be converted to the first dissimilar level signal and second electrical level signal by pedestals signal; And this conversion can be carried out respectively by the first change-over circuit 211 set by above-mentioned level conversion unit 21 and the second change-over circuit 212.(with reference to Fig. 5)
Such as: usually signal lamp control system 111 is 24V level signal for wagon detector collection, and electronic police system 112 needs the level signal gathering 3.3V, but also there is the contrary situation of corresponding logical relationship.Signal lamp control system 111 requires that vehicle checker 110 is input to respective signal lamp control system 111 input interface level and is: have vehicle by time be input to signal lamp control system 111 for low level conducting over the ground, do not have vehicle by time be high-impedance state; Electronic police system 112 require vehicle checker 110 have vehicle by time export high-impedance state and end over the ground, do not have vehicle by time output low level conducting over the ground.
With reference to Fig. 3, above-mentioned first change-over circuit 211 comprises: R1.Above-mentioned second change-over circuit 212 comprises: metal-oxide-semiconductor Q1, optocoupler P1 and resistance R2, the grid of described metal-oxide-semiconductor Q1 access vehicle checker 110 signal, source ground, drains to be connected to optocoupler P1 by resistance R2.
DETA0 is the level signal that vehicle checker 110 produces, and accesses electronic police system 112 through pull-up resistor R1, DETA0.When having vehicle in time being detected by vehicle checker 110, under pull-up resistor R1 effect, DETA0 is high level 3.3V, and when vehicle leaves, DETA0 is low level 0.Wherein pull-up resistor R1 outputs signal DETA0 to vehicle checker 110 and changes rear output.
DETA0 accesses signal lamp control system 111.When there being car to be high level through out-of-date DETA0, Q1 conducting, at this moment optocoupler P1 works, and DETA0_S over the ground conducting is low level; When vehicle leaves, DETA0 is that low level 0, Q1 is ended, and at this moment optocoupler does not work, and DETA0_S is high-impedance state.Wherein resistance R2 and optocoupler P1 outputs signal machine DETA0 to vehicle checker 110 and changes rear output.
The shared device 20 of vehicle checker 110 is realized above by level signal conversion, same vehicle checker 110 output signal on track can be shared to whistle control system and traffic electronic police system 112, thus save the erection quantity of vehicle checker 110, save construction cost, and because the quantity of vehicle checker 110 reduces, the maintenance cost of signal lamp control system 111 or electronic police system 112 also reduces.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. realize the shared method of vehicle checker by level signal conversion, it is characterized in that, comprise step:
The level signal receiving vehicle checker generation is converted to multiple different level signal;
Described multiple different level signal is exported to respectively multiple can the system of the corresponding level signal of identification;
Wherein:
Described multiple different level signal comprises the first level signal and second electrical level signal;
Described conversion is carried out respectively by the first change-over circuit and the second change-over circuit;
Described first change-over circuit comprises:
Resistance R1;
Described second change-over circuit comprises:
Metal-oxide-semiconductor Q1, optocoupler P1 and resistance R2, the grid access vehicle checker signal of described metal-oxide-semiconductor Q1, source ground, draining is connected to optocoupler P1 by resistance R2.
2. as claimed in claim 1 realize by level signal conversion the method that vehicle checker shares, it is characterized in that, describedly can the system of the corresponding level signal of identification to comprise:
Signal lamp control system or electronic police system.
3. realize the shared device of vehicle checker by level signal conversion, it is characterized in that, comprising:
Level conversion unit, the level signal produced for receiving vehicle checker is converted to multiple different level signal;
Signal output unit, for described multiple different level signal is exported to respectively multiple can the system of the corresponding level signal of identification;
Wherein, described level conversion unit comprises the first change-over circuit and the second change-over circuit; Described multiple different level signal comprises the first level signal and second electrical level signal;
Described first change-over circuit comprises:
Resistance R1;
Described second change-over circuit comprises:
Metal-oxide-semiconductor Q1, optocoupler P1 and resistance R2, the grid access vehicle checker signal of described metal-oxide-semiconductor Q1, source ground, draining is connected to optocoupler P1 by resistance R2.
4. as claimed in claim 3 realize by level signal conversion the device that vehicle checker shares, it is characterized in that, describedly can the system of identification level signal to comprise:
Signal lamp control system or electronic control system.
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| CN201110452898.2A CN102542792B (en) | 2011-12-30 | 2011-12-30 | Method and device for achieving vehicle inspection device sharing through level signal conversion |
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| CN201110452898.2A CN102542792B (en) | 2011-12-30 | 2011-12-30 | Method and device for achieving vehicle inspection device sharing through level signal conversion |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083463A (en) * | 2007-05-10 | 2007-12-05 | 华为技术有限公司 | Apparatus and method for bidirectional level conversion |
| CN101572008A (en) * | 2008-04-30 | 2009-11-04 | 奥城同立科技开发（北京）有限公司 | Traffic light control system with functions of violation snapshot and traffic dispersion |
| CN201499154U (en) * | 2009-08-26 | 2010-06-02 | 宁波和真汽车电子系统有限公司 | 12C bus based bidirectional level switching circuit |
| CN201655020U (en) * | 2010-02-09 | 2010-11-24 | 深圳市博远交通设施有限公司 | Red-light violation light color networking detection system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083463A (en) * | 2007-05-10 | 2007-12-05 | 华为技术有限公司 | Apparatus and method for bidirectional level conversion |
| CN101572008A (en) * | 2008-04-30 | 2009-11-04 | 奥城同立科技开发（北京）有限公司 | Traffic light control system with functions of violation snapshot and traffic dispersion |
| CN201499154U (en) * | 2009-08-26 | 2010-06-02 | 宁波和真汽车电子系统有限公司 | 12C bus based bidirectional level switching circuit |
| CN201655020U (en) * | 2010-02-09 | 2010-11-24 | 深圳市博远交通设施有限公司 | Red-light violation light color networking detection system |
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