CN102542792A - 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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- CN102542792A CN102542792A CN2011104528982A CN201110452898A CN102542792A CN 102542792 A CN102542792 A CN 102542792A CN 2011104528982 A CN2011104528982 A CN 2011104528982A CN 201110452898 A CN201110452898 A CN 201110452898A CN 102542792 A CN102542792 A CN 102542792A
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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 method and device of sharing through level signal conversion realization vehicle checker.
Background technology
Be typically provided with signal lamp control system and traffic electronic police system equipment at traffic intersection, be respectively applied for the traffic lights at crossing are controlled and illegal vehicular traffic is captured evidence obtaining.In the practical application; Signal lamp control system is for more intelligent control signal lamp; Usually on the track, lay the magnitude of traffic flow in this track of vehicle checker statistics that connects ground induction coil; And the traffic electronic police system is in order to judge whether vehicle makes a dash across the red light, and also on the track, lays vehicle checker usually to the vehicle judgement of crossing the border.The characteristics of vehicle checker are: the output signal is exported signal for being high impedance over the ground for being Low ESR over the ground when sensing vehicle and leave ground induction coil when sensing vehicle and get into ground induction coil.
If this two cover system need obtain the information in same track, present way is to be respectively signal lamp control system and traffic electronic police system and on same track, to lay the vehicle checker of system separately.The means of communication of using owing to each system are different, make the signal of vehicle checker not share, and cause the laying that repeats that needs two cover vehicle checkers in the same track, not only increased equipment cost, also increased the maintenance cost of system.
Summary of the invention
Fundamental purpose of the present invention provides a kind of method of sharing through level signal conversion realization vehicle checker, makes vehicle checker to be shared.
The present invention proposes a kind of method of sharing through level signal conversion realization vehicle checker, comprises step:
The level signal that receives the vehicle checker generation converts a plurality of different level signals into;
But said a plurality of different level signals are exported to the system of the corresponding level signal of a plurality of identifications respectively.
Preferably, said a plurality of different level signals comprises first level signal and second level signal;
Said conversion is carried out through first change-over circuit and second change-over circuit respectively.
Preferably, but the system of the corresponding level signal of said identification comprise:
Signal lamp control system or electronic police system.
Preferably, said first change-over circuit comprises:
R1；
Said second change-over circuit comprises:
Metal-oxide-semiconductor Q1, optocoupler P1 and resistance R 2, the grid of said metal-oxide-semiconductor Q1 inserts the vehicle checker signal, source ground, drain electrode is connected to optocoupler P1 through resistance R 2.
The present invention also proposes a kind of device of sharing through level signal conversion realization vehicle checker, comprising:
Level conversion unit is used to receive the level signal that vehicle checker produces and converts a plurality of different level signals into;
Signal output unit, but be used for said a plurality of different level signals are exported to respectively the system of the corresponding level signal of a plurality of identifications.
Preferably, said level conversion unit comprises first change-over circuit and second change-over circuit; Said a plurality of different level signals comprises first level signal and second level signal.
Preferably, but the system of the said level signal of said identification comprise:
Signal lamp control system or electronic control system.
Preferably, said first change-over circuit comprises:
R1；
Said second change-over circuit comprises:
Metal-oxide-semiconductor Q1, optocoupler P1 and resistance R 2, the grid of said metal-oxide-semiconductor Q1 inserts the vehicle checker signal, source ground, drain electrode is connected to optocoupler P1 through resistance R 2.
The present invention can convert the level signal that vehicle checker produces the level signal of number of different types into, but exports in the system of the corresponding level signal of a plurality of identifications, thereby can realize sharing of vehicle checker, practices thrift construction cost and maintenance cost.
Description of drawings
Fig. 1 realizes steps flow chart synoptic diagram among shared method one embodiment of vehicle checker for the present invention through the level signal conversion;
Fig. 2 realizes overall system architecture synoptic diagram among shared method one embodiment of vehicle checker for the present invention through the level signal conversion;
Fig. 3 realizes realizing among shared method one embodiment of vehicle checker the electrical block diagram of conversion through the level signal conversion for the present invention;
Fig. 4 realizes structural representation among shared device one embodiment of vehicle checker for the present invention through the level signal conversion;
Fig. 5 realizes the structural representation of level conversion unit among shared device one embodiment of vehicle checker through the level signal conversion for the present invention.
The realization of the object of the invention, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figure 1, the present invention proposes a kind of method one embodiment that shares through level signal conversion realization vehicle checker.This method can comprise:
The level signal that step S10, reception vehicle checker produce converts a plurality of different level signals into;
But step S11, said a plurality of different level signals are exported to the system of the corresponding level signal of a plurality of identifications respectively.
Can be basic level signal to the testing result that vehicle checker produces in the present embodiment, through converting this level signal the level signal of number of different types into, but export in the system of the corresponding level signal of a plurality of identifications, thereby can realize sharing of vehicle checker.This basis level signal can be passive switching value signal; These a plurality of dissimilar level signals can be 3.3V level signal and the level signal of different voltages such as 5V level signal or passive switching value signal; This system can be signal lamp control system or electronic police system etc.
With reference to Fig. 2; This vehicle checker 110 is through detecting the basic level signal that is produced; Through after the level conversion, form the level signal of this signal lamp control system 111 and 112 ability identifications of electronic police system respectively, 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, can when having reduced cost of products, also reduce the cost of product maintenance.
Conversion in the present embodiment can convert basic level signal into the first dissimilar level signals and second level signal; And this conversion can be carried out through first change-over circuit and second change-over circuit respectively.
For example: common signal lamp control system 111 is the 24V level signal for the wagon detector collection, and electronic police system 112 needs to gather the level signal of 3.3V, but also has the opposite situation of corresponding logical relationship.Signal lamp control system 111 requires vehicle checker 110 output signals to be input to respective signal lamp control system 111 input interface levels: have vehicle through the time be input to signal lamp control system 111 and be low level conducting over the ground, do not have vehicle through the time be high-impedance state; The output high-impedance state ended output low level conducting over the ground when not having vehicle to pass through over the ground when electronic police system 112 required vehicle checker 110 to have vehicle to pass through.
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 R 2, and the grid of said metal-oxide-semiconductor Q1 inserts the vehicle checker signal, source ground, drain electrode is connected to optocoupler P1 through resistance R 2.
DETA0 is the level signal that vehicle checker 110 produces, and through pull-up resistor R1, DETA0 inserts electronic police system 112.When the vehicle process was detected by vehicle checker 110, DETA0 was high level 3.3V under pull-up resistor R1 effect, and DETA0 is a low level 0 when vehicle leaves.Wherein pull-up resistor R1 changes back output to vehicle checker 110 output signal DETA0.
DETA0 inserts signal lamp control system 111.Is high level as car through out-of-date DETA0, the Q1 conducting, and optocoupler P1 work at this moment, DETA0_S conducting over the ground is a low level; DETA0 is a low level 0 when vehicle leaves, and Q1 ends, and at this moment optocoupler is not worked, and DETA0_S is a high-impedance state.Wherein resistance R 2 is changed back output with optocoupler P1 to vehicle checker 110 output teleseme DETA0.
The above-mentioned method of sharing through level signal conversion realization vehicle checker 110; Can be with same vehicle checker 110 outputs level signals on the track; Through level conversion be two can be 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 quantity of setting up of vehicle checker 110; Practice thrift construction cost, and the maintenance cost of signal lamp control system 111 or electronic police system 112 reduces also.
With reference to Fig. 4, the present invention also provides a kind of and realizes device 20 1 embodiment that vehicle checker is shared through the level signal conversion.This device 20 can comprise: level conversion unit 21 and signal output unit 22; This level conversion unit 21 is used to receive the level signal that vehicle checker 110 produces and converts a plurality of different level signals into; This signal output unit 22, but be used for said a plurality of different level signals are exported to respectively the system of the corresponding level signal of a plurality of identifications.
Can be basic level signal to the testing result that vehicle checker 110 produces in the present embodiment; Through this level signal being converted into the level signal of number of different types; But export in the system of the corresponding level signal of a plurality of identifications, thereby can realize sharing of vehicle checker 110.This basis level signal can be passive switching value signal; These a plurality of dissimilar level signals can be 3.3V level signal and the level signal of different voltages such as 5V level signal or passive switching value signal; This system can be signal lamp control system 111 or electronic police system 112 etc.
This vehicle checker 110 is through detecting the basic level signal that is produced; Through after the level conversion; Form the level signal of this signal lamp control system 111 and 112 ability identifications of electronic police system respectively; And export this signal lamp control system 111 and electronic police system 112 respectively to, and 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; Can when having reduced cost of products, also reduce the cost of product maintenance.
Conversion in the present embodiment can convert basic level signal into the first dissimilar level signals and second level signal; And this conversion can be carried out through above-mentioned level conversion unit 21 set first change-over circuit 211 and second change-over circuits 212 respectively.(with reference to Fig. 5)
For example: common signal lamp control system 111 is the 24V level signal for the wagon detector collection, and electronic police system 112 needs to gather the level signal of 3.3V, but also has the opposite situation of corresponding logical relationship.Signal lamp control system 111 requires vehicle checker 110 output signals to be input to respective signal lamp control system 111 input interface levels: have vehicle through the time be input to signal lamp control system 111 and be low level conducting over the ground, do not have vehicle through the time be high-impedance state; The output high-impedance state ended output low level conducting over the ground when not having vehicle to pass through over the ground when electronic police system 112 required vehicle checker 110 to have vehicle to pass through.
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 R 2, and the grid of said metal-oxide-semiconductor Q1 inserts vehicle checker 110 signals, source ground, drain electrode is connected to optocoupler P1 through resistance R 2.
DETA0 is the level signal that vehicle checker 110 produces, and through pull-up resistor R1, DETA0 inserts electronic police system 112.When the vehicle process was detected by vehicle checker 110, DETA0 was high level 3.3V under pull-up resistor R1 effect, and DETA0 is a low level 0 when vehicle leaves.Wherein pull-up resistor R1 changes back output to vehicle checker 110 output signal DETA0.
DETA0 inserts signal lamp control system 111.Is high level as car through out-of-date DETA0, the Q1 conducting, and optocoupler P1 work at this moment, DETA0_S conducting over the ground is a low level; DETA0 is a low level 0 when vehicle leaves, and Q1 ends, and at this moment optocoupler is not worked, and DETA0_S is a high-impedance state.Wherein resistance R 2 is changed back output with optocoupler P1 to vehicle checker 110 output teleseme DETA0.
The above-mentioned device of sharing through level signal conversion realization vehicle checker 110 20; Can the 110 output signals of the same vehicle checker on the track be shared to whistle control system and traffic electronic police system 112; Thereby save the quantity of setting up of vehicle checker 110; Practice thrift 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 reduces also.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a method of sharing through level signal conversion realization vehicle checker is characterized in that, comprises step:
The level signal that receives the vehicle checker generation converts a plurality of different level signals into;
But said a plurality of different level signals are exported to the system of the corresponding level signal of a plurality of identifications respectively.
2. the method for sharing through level signal conversion realization vehicle checker as claimed in claim 1 is characterized in that said a plurality of different level signals comprise first level signal and second level signal;
Said conversion is carried out through first change-over circuit and second change-over circuit respectively.
According to claim 1 or claim 2 pass through the method that level signal conversion realizes that vehicle checker is shared, it is characterized in that, but the system of the corresponding level signal of said identification comprises:
Signal lamp control system or electronic police system.
According to claim 1 or claim 2 pass through the method that level signal conversion realizes that vehicle checker is shared, it is characterized in that said first change-over circuit comprises:
R1；
Said second change-over circuit comprises:
Metal-oxide-semiconductor Q1, optocoupler P1 and resistance R 2, the grid of said metal-oxide-semiconductor Q1 inserts the vehicle checker signal, source ground, drain electrode is connected to optocoupler P1 through resistance R 2.
5. a device of sharing through level signal conversion realization vehicle checker is characterized in that, comprising:
Level conversion unit is used to receive the level signal that vehicle checker produces and converts a plurality of different level signals into;
Signal output unit, but be used for said a plurality of different level signals are exported to respectively the system of the corresponding level signal of a plurality of identifications.
6. the device of sharing through level signal conversion realization vehicle checker as claimed in claim 5 is characterized in that said level conversion unit comprises first change-over circuit and second change-over circuit; Said a plurality of different level signals comprises first level signal and second level signal.
7. like claim 5 or the 6 described devices of sharing through level signal conversion realization vehicle checker, it is characterized in that, but the system of the said level signal of said identification comprises:
Signal lamp control system or electronic control system.
8. like claim 5 or the 6 described devices of sharing through level signal conversion realization vehicle checker, it is characterized in that said first change-over circuit comprises:
R1；
Said second change-over circuit comprises:
Metal-oxide-semiconductor Q1, optocoupler P1 and resistance R 2, the grid of said metal-oxide-semiconductor Q1 inserts the vehicle checker signal, source ground, drain electrode is connected to optocoupler P1 through resistance R 2.
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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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