CN2164577Y - Vehicle traffic volume automatic recording instrument according to vehicle type - Google Patents
Vehicle traffic volume automatic recording instrument according to vehicle type Download PDFInfo
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- CN2164577Y CN2164577Y CN 93213074 CN93213074U CN2164577Y CN 2164577 Y CN2164577 Y CN 2164577Y CN 93213074 CN93213074 CN 93213074 CN 93213074 U CN93213074 U CN 93213074U CN 2164577 Y CN2164577 Y CN 2164577Y
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Abstract
The utility model relates to a vehicle traffic volume automatic recording instrument according to vehicle type. The utility model uses the numbers of axles, the shaft wheelbase, and the tyre types of vehicles as identification parameters, the identification that whether matched first and second axial center connecting lines for the vehicle have free position and whether the front and the rear wheels of the same vehicle are the same type is used as identification signals. The utility model is composed of infrared sensors, a digital logic circuit, and a displaying and recording circuit, wherein, the infrared sensors comprises seven pairs of infrared sensors, the seventh paire of infrared sensors are composed of an infrared emitter and two infrared sensors. The utility model, which has the advantage of high interference immunity, is especially suitable for mixed traffic roads. The utility model can correctly record the result of identifying types according to eight types of motor vehicles and animal drawn vehicles regulated by the ministry of communications. The accuracy rate of identifying types is 95%-97%, and the accuracy rate of recording is 98%-99.5%.
Description
The utility model relates to a kind of motor vehicles vehicle flowrate branch vehicle self-recording device.
Chinese patent CN87205945 discloses a kind of " highway communication flow monitoring device ", it is with the number of axle of vehicle, wheelbase, the vehicle body length overall parameter as the identification vehicle, adopt three pairs of infrared sensors, and be equipped with interface circuit and single-chip microcomputer or logical circuit, printer is formed monitoring device.Its shortcoming is that anti-interference is poor, especially is not suitable for being used for hybrid traffic route because the sensor logarithm is few.
The purpose of this utility model is at above-mentioned shortcoming of the prior art, and a kind of strong interference immunity is provided, somatotype and add up vehicle flowrate self-recording device accurately.
The purpose of this utility model is to realize like this, it is main identification parameter with the number of axle, wheelbase, the tyre model of vehicle, adopt infrared sensor and DLC (digital logic circuit) and displayed record circuit to form, particularly it also adopts and has or not neutral gear and same car front and back wheel on first and second axial connecting line of vehicle whether a model is as identification signal, and being equipped with seven pairs of infrared sensors, the 7th pair of infrared sensor is made up of an infrared transmitter and two infrared remote receivers.
Infrared sensor is to P1P ' 1, P2P ' 2, P3P ' 3, P4P ' 4, P5P ' 5 setting height(from bottom)s are 65-90mm, the setting height(from bottom) of P6P ' 6 is 45-70mm, infrared transmitter P ' 7 and infrared remote receiver P1, P2, P3, P4, P5, P6 is contained in the same side of road, the same P1 of the setting height(from bottom) of P ' 7, infrared remote receiver P7, P8 and infrared transmitter P ' 1, P ' 2, P ' 3, P ' 4, P ' 5, P ' 6 is installed in the same side of road, P7, P8 is installed in same point, they are highly different, the P7 setting height(from bottom) is h2, the P8 setting height(from bottom) is h1, h1=0.1173(b+500)+h0mm, h2=0.147(b+500)+h0mm(b is a width of roadway, h0 is the setting height(from bottom) of P ' 7)
Each is as follows to the relative position of sensor:
l1＝p1p2＝220－490mm，
l2＝p1p3＝473－572mm，
l3＝p1p4＝516－616mm，
l4＝p1p5＝555－640mm，
l5＝p1p′7＝l4／2mm，
l6＝p2p6＝2610－2750mm，
The installation elevation angle of infrared transmitter P ' 7 be 6 ° 30 '-8 ° 30 '.
The the 1st to the 6th pair of infrared sensor is all perpendicular to the road ordinate.
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is the right mounting plane figure of infrared sensor.
Fig. 3 is that the setting height(from bottom) of infrared sensor requires figure.
Fig. 4 is the 7th a pair of infrared sensor scheme of installation.
Fig. 5 is circuit theory diagrams of the present utility model.
Fig. 2-4 is seven pairs of infrared sensor scheme of installations that adopted.Infrared sensor adopts best setting height(from bottom) 75mm, infrared transmitter P ' to P1P ' 1, P2P ' 2, P3P ' 3, P4P ' 4, P5P ' 5
7Adopt best setting height(from bottom) 75mm, the installation elevation angle of P ' 7 be 6 ° 30 '-8 ° 30 ', the setting height(from bottom) of infrared remote receiver P7, P8 is respectively h2=0.1173(b+500)+75mm, h1=0.147(b+500)+75mm.
During installation, P1, P2, P ' 7, P3, P4, P5 one are assembled in the box body, and P ' 1, P ' 2, P ' 3, P ' 4, P ' 5 one are assembled in another box body, can reduce outdoor installation workload.
P6P ' 6 installs separately, and setting height(from bottom) is 50mm.Each relative position to sensor adopts best installation data as follows: l1=221mm.l2=470mm.l3=545mm.l4=610mm.l5=305mm.l6=2650mm.
The utility model adopts the tyre model and the number of axle of various cars on minute vehicle record be major parameter.4 class are divided in the wheel footpath, and are ascending, No. 1 wheel footpath D1=540-680mm, No. 2 D2=770-880mm, No. 3 D3=900-1000mm, No. 4 D4＞1040mm.In passenger-cargo identification, the front-wheel that utilizes car has or not the difference of neutral gear to the two axle center lines between the trailing wheel.In the resolution of 130 type passenger vehicles (having fluffy) and lorry (no fluffy) and cross-country minibus, have or not between the front and back wheel the neutral gear except that utilizing, also utilized the 6th couple of infrared sensor P6P ' 6, specially the wheelbase of these three kinds of cars is monitored, to reach accurately typing.
Fig. 1 and Fig. 5 are respectively schematic block circuit diagram of the present utility model and electrical schematic diagram.As shown in Figure 1, the utility model is by infrared eye, motor vehicle identification circuit, tyre model identification circuit, number of axle writing circuit, bus, bulk production discrimination circuit, little visitor, little goods area parallel circuit, pull, hang greatly discrimination circuit, time-delay reset is adjusted circuit, duty control circuit, working storage, counter, signal combination circuit, undesired signal removing circuit, forced resetting circuit and record and is gathered storage demonstration print circuit composition.The displayed record circuit can adopt common charactron.Also can adopt 6 unification code translators, also can join miniprinter, being equipped with clock circuit can timed print record result.
Motor vehicle is known circuit, and time-delay reset is adjusted circuit, forced resetting circuit, undesired signal and removed that circuit disturbs getting rid of, conforms, accurately somatotype writes down and all plays an important role.See following principle of work explanation for details.
Describe principle of work of the present utility model in detail below in conjunction with Fig. 5:
One, its this condition:
1, press direction of traffic, wheel blocks infrared eye P6, P5, P4, P3, P7, P8, P2, P1 successively.
2, the wheel for motor vehicle middle part is provided with light hole.Car front-wheel heavy burden sinking 20mm(actual measurement).
3, wheel directly is divided into 4 class.
Two, circuit original state: base 555 when IC0-IC7 is in the circuit, IC8-IC10 are the CD4017 counter.
Each detector is subjected to light to be output as noble potential 1.All IC are in blockage except that IC0.
Three, principle of work:
Motor vehicle identification: when motor vehicle arrived, P5, P4, P3, P7 at first became 0 by 1, and the output of F5, F4, F3 becomes 1 by 0, and A1 output becomes 0 by 1.F9 becomes 1 by 0, and when car advances to when blocking P2, the output of F2 becomes 1 by 0, and the positive pulse of the differentiating circuit output by C1R1 makes B1 output negative pulse trigger IC0, its 3 pin output noble potential 1, and F10 is 0 by 1 saltus step just, IC8, the IC9 state of lifting a blockade; F11 output simultaneously becomes 1 by 0, make IC1-IC7 also the state of lifting a blockade become the triggering state for the treatment of.If not motor vehicle, as pedestrian, bicycle etc., then do not satisfy the trigger condition of IC0, circuit still is in off position, reaches jamproof purpose.
1, the car class by the time the course of work.
The car front and back wheel is No. 1 wheel, circuit was just located duty when wheel covered P2 as previously mentioned, car readvances and covers the moment of P1, owing to be No. 1 wheel, at this position P5, P4, P3 is not blocked, output becomes 1 by 0, have only P2 to be blocked, be output as 0, F2 is output as 1, D2 output becomes 1 by 0, at this moment B2, the pin of D6 uprises current potential 1, being blocked of P1 becomes 0 by 1 simultaneously, F1 is output as 1, and the differentiating circuit of C2R2 is just exported positive pulse, and D1 just has positive spike pulse output (E1 initially is output as a 1) scanning B2, B3, B4, the input end of B5, at this moment having only the input end of B2 is 1, so B2 output is the 0(negative pulse by 1 saltus step) trigger IC1 and make its 3 pin output become the 1(stable state by 0), at this moment E1 uprises current potential because of a pin, becomes 0 so export by 1, just seal D1(when not having wheel to come again, do not take turns be No. 1 the wheel or 2,3, No. 4 wheels, D1 all do not have scanning impulse output) at the same time, because P2, P1 is kept off, F2, F1 output 1, C2R2 exports positive spike pulse, and D7 just exports positive pulse, and aforementioned D2 is output as 1, D6 output positive pulse then makes an IC9 count pulse of winning the first place.When trailing wheel by the time, with front-wheel by the time the same (just D1 do not have scanning impulse output) IC9 count pulse of winning the second place, make Q2 become noble potential 1 because IC1 is output as 1, B9 is output as 0, F16 is output as 1 to writing down display part 4, writes down little visitor.F17 output simultaneously becomes 0 by 1, and to make the IC04 pin be electronegative potential by the noble potential saltus step, forces IC0 to reset, and finishes recording process one time, and circuit is got back to original state again.
2, baby tractor by the time the course of work: the front-wheel that drags for a short time is No. 1 wheel, and front-wheel is by same as above, and IC1 is output as 1, and IC9, IC8 all have a trigger pulse.For a short time second, third that drags take turns by the time because wheel footpath is big, belong to 2, No. 3, just different with preceding car class, it is 0 that P2, P3 block, and D2 output 0 is so D6 is blocked, it can not make win the second place trigger pulse of IC9, therefore can not remember little visitor and reset, and its back two-wheeled can make D7 output positive pulse as front-wheel, triggering IC8, make IC8 that three trigger pulses (three) be arranged, the Q3 of IC8 uprises current potential.Make D10 output become 1 by 0, output record signal to 7, record drags for a short time.Door B8 output simultaneously becomes 0 by 1 forces IC0 to reset.Recording reset almost carries out simultaneously, and the towing dolly body does not also have the all-pass mistake, just gets back to original state, and this has very big advantage, and towing dolly speed is low, and the car of back is followed by arrival, also can incorrect posting, error of omission.
3, the little visitor of 130 types, little goods, cross-country minibus class circuit working process.
This class car front-wheel belongs to wheel No. 2, and when it arrived P1, P2 was 0, and P3 is 0, P4 is 1, and P5 is 1, i.e. (0011), and the positive scanning impulse of D1 output makes a B3 output negative pulse as described above, trigger IC2 output noble potential 1, F2 output simultaneously becomes 1 by 0, and the positive pulse of C2R2 makes D7 output positive pulse, triggers IC8.When second take turns by the time repeat said process, D7 exports a positive pulse again, and to make the Q2 saltus step of IC8 be 1, at this moment the time-delay reset network C 3 of IC0 begins charging.No matter to this is little goods or little visitor, when door D9 opened, D16 output just became 1 by 0, which has output for door B10 and D17, is 0 or 1 with regard to the output that is decided by IC5, and now analyze the output of IC5: the wheelbase of this class car is greater than 2800mm, when front-wheel had just arrived P2 change duty, P6 was subjected to light to be output as 1, and it still is 1 that B6 is blocked output, IC7 can not trigger, and output terminal 3 is 0 still, and F8 is output as 1, the car P1 that readvances, IC8 has a trigger pulse, and output terminal Q1 becomes 1 by 0, makes the input end 2 of A3 uprise current potential, after the front-wheel, after be passed to before the P1, P1 is 1, P5 is 1, make 4 of A3,3 input ends also are 1, if minibus P8 is blocked and is output as 0 when trailing wheel arrives P1 always, D5 output still is 0, trailing wheel one to P1, a win the second place trigger pulse of IC8, Q1 is 0 by 1 saltus step, 1 pin of A3 then becomes 0 again by 1, at this moment P8 becomes 1 again, A3 can not export negative pulse yet, and IC5 is output as 0, and door B10 opens the little visitor of note; If little goods, before trailing wheel arrives P1, the space is always arranged under the car, make P8 that the chance of flash of light be arranged and export positive pulse and make 4 input ends of A3 all become 1 to D5, negative pulse output is arranged, make IC5 trigger output 1, just output record pulse to 1 of door D17, record buggy.Note buggy trailing wheel is later through appropriate time, and the charging process of C3 finishes, and IC06 pin current potential resets to 4V, and door D9 opens and finishes recording process.Here an input end that need to prove A3 has utilized the Q1 of IC8, and what this had just determined P8 uprises current potential 1, and only after the front-wheel of car is crossed P1, trailing wheel a period of time before the P1 is effective.Car is invalid through becoming 1 again.
This class car also has the problem of offroad vehicle, as 212 classes, adhere to little visitor separately by vehicle, but wheel belongs to No. 2, chassis is high again, identical with little goods, have only the less 2300mm of being of wheelbase, P6 aims at this class car and establishes, the course of work is: current when taking turns to P2, trailing wheel is just in time in the position of P6, because the P6 shading, F6 exports noble potential, front-wheel during to P2 the same described duty change, F11 output becomes 1 by 0, and C4R4 has positive pulse to give the pin of B6, makes B6 have negative pulse output to trigger 2 pin of IC7,3 pin output noble potential 1, F8 is output as 0, and door D5 is sealed, and A3 does not just have negative pulse and removes to trigger IC5.IC5 output still is 0 to remember little visitor.
4, middle goods class and bus's class.
The wheel of this model belongs to wheel No. 3, and the situation that front-wheel passes through is with little objective class, just P2, P3, P4 is blocked is 0, P5 is 1 i.e. (0001), has only D4 to be output as 1, and the scanning impulse of D1 makes B4 output negative pulse, IC3 is triggered output by 0 change 1, after two wheels were all pass by, the Q2 of IC8 was 1, when door D9 opens, has only D15 output noble potential 1, it is 1 that door D18, B11 respectively have an input end, and it is 1 or 0 which door is opened with regard to the output that determines IC6, and this just determines to send a car bulk production or bus.If bus P7 is 0, A2 does not have negative pulse output, and IC6 is output as 0, and door B11 opens the output record pulse through F15 to 5, the record motor bus.If bulk production is identical with the situation of little goods, always there is in the scope of trailing wheel the space to make P7 have flash of light to become 1 chance at the car front-wheel, make four input ends of A2 all become 1 and negative pulse output is arranged, make IC6 trigger output 1, a door D18 opens and exports 2 to, goods in the record.Towed vehicle is the same with this situation, and just the Q4 saltus step of IC8 is four of 1(), when door D8 opens, D12 output 1, D19 output trailer recording impulse.Through D24 to 6, record is pulled.
5, high capacity waggon, passenger vehicle class:
Identical with medium truck, the passenger vehicle class course of work.Difference be tire number be No. 4 (d 〉=1040mm).When front-wheel arrived P1, it was (0000) that P2, P3, P4, P5 are 0.Have only B5 output negative pulse, IC4 is triggered, if bulk production (two), D14 has output, through D20 to 3 note bulk production.Trailer in this way, D13 has output.Passenger-cargo differentiation is the same.
6, big-and-middle dragging: in drag front-wheel to belong to wheel No. 2, front-wheel is during to P1, P2 is 0, P3 is 0, P4 is 1, P5 is 1, i.e. (0011), IC2 output 1 is the same with little goods, but in drag and have 4 and pass through, the Q4 saltus step of IC8 is 1, when door D8 opened, D11 exported in 8 records and drags.Drag front-wheel to belong to wheel No. 3 greatly, the same with towed vehicle, utilize and drag wheelbase 2.45M greatly less than big-and-middle lorry, the same shading with P6 with little passenger-cargo differentiation is distinguished with not shading and is dragged greatly and trailer.Process is: when big tractor comes during the current P2 of taking turns to trailing wheel just in time cover P6,3 pin become 1 by 0 so IC7 is triggered, the S point is 1, and N is 0, so D23 output record pulse to 8 record drags greatly, to pulling greatly when coming, IC7 output 0, F8 output 1, the N point is 1, the S point is 0, D24 output record pulse to 6 record trailer.
7, adjust circuit about time-delay: the little visitor of this circuit (sleeping carriage class), the record that drags are not for a short time delayed time and forced resetting.(little passenger-cargo yet can making do not delayed time), the large car recording reset of all will delaying time be the sort of car because a car has only wheel all could differentiate by detecting area, and large car has the branch of bicycle and towed vehicle, will be transferred to appropriate time by general road speed.There is the short contradiction of vehicle commander's car in this: as fixing time by bicycle (2 take turns), 4-8 cars (large-scale towed vehicle) reset with regard to cannot get through, as fixing time by 8 cars, after the bicycle, time is longer, and second car arrives and can not reset, and just forms the misdescription of a trailer of two bicycle notes.For solving this contradiction, establish automatic adjustment delay circuit.Be made up of A1, F9, BG1 as figure, the course of work is: IC0 is triggered and exports 1 after the car front-wheel, and BG1 ends, and capacitor C 3 begins charging.E point voltage Ve begins to raise, and when Ve did not reach 2/3Vdd, second wheel arrived again, because the blocking of wheel, F3, F4, F5, F7 output become at 1 o'clock by 0 simultaneously, and A1 output becomes 0 by 1, and then F9 becomes 1 by 0, the BG1 conducting, capacitor C 3 is discharged, second take turns after.BG1 ends again, capacitor C 3 begins charging again, at this moment if two-axle car, Ve is charged to 2/3Vdd and just resets and meet next car, if not two but multiaxis, then third round or four-wheel ... all repeat second and take turns by situation, every mistake one is taken turns capacitor C 3 and is put once electricity, all passes by up to whole wheels, still take turns over from last, the charging of capacitor C 3 is just effective.Multiaxle trucks are just the same with two situation like this, and contradiction has just solved.Fixed delay time only be a bit larger tham front-wheel and pass through to trailing wheel by getting final product.Overcome the shortcoming of two car numbers of a long vehicle note of mistake of existing recorded device effectively.
8, undesired signal is removed circuit: though established the described motor vehicle identification circuit of beginning, but the situation on the road is the combination of extremely complicated pedestrian, bicycle, animal-drawn vehicle, sometimes also may cause the same condition of camera motor-car and make the IC0 false triggering, if the situation that at this moment has IC1 and IC3, IC2 and IC4 to be triggered simultaneously, B7 just exports negative pulse, forces IC0 to reset.Reached the purpose of removing undesired signal.
9, animal-drawn vehicle: utilize the leapfroging of four pin of livestock to make it to form the noble potential that the Q1 of the triggering IC8 formation that is equipped with wheel is again exported in four pulses, the formation recording impulse combines.The course of work is: original state: the CP of IC10 is 1, and Q1 is 0, the BG5 conducting, and the R end is 0 for electronegative potential, Q4, and the Q1 of IC8 is 0, and F1 is 0, and F7 is 0, P3 is 1.When animal-drawn vehicle comes, be 0 because four pin of livestock become P7 with a figure, then F7 is 1, P3 is 1.The every mistake of four hoof once, P1, B13 just have a negative pulse to trigger IC10, the livestock Q4 saltus step of IC10 later is 1, then wheel arrives P1 to make the Q1 of IC8 is 1.At this moment D22 is output as 1 to 9 record animal-drawn vehicle, and the R of IC10 end is also resetted by 0 change 1 simultaneously, and Q1 becomes 1 by 0, BG5 conducting, C6 discharge.If not animal-drawn vehicle and false triggering IC10 makes the Q1 of IC10 become 1 by 0, Q0 becomes 0 by 1, and BG5 ends, and C6 begins charging.The current potential of R end is resetted by low slowly the rising.When motor vehicle came, F1 was 1, and F7 is 1, and P3 is 0, the B13 no-output, and can not disturb animal-drawn vehicle, other cars and pedestrian also can not disturb animal-drawn vehicle because of lacking the tire signal.
The utility model has the advantages that strong interference immunity. Be specially adapted to hybrid traffic route, can be exactly finish the somatotype record by 8 kinds of vehicle types and the animal-drawn vehicle of Ministry of Communications's regulation. The somatotype accuracy rate is at 95-97%, and the record accuracy rate is at 98-99.5%.
Claims (3)
1, a kind of number of axle with vehicle, wheelbase, tyre model are main identification parameter, the vehicle flowrate that adopts infrared sensor and DLC (digital logic circuit) and displayed record circuit to form divides the vehicle self-recording device, it is characterized in that it also adopts has or not neutral gear and same car front and back wheel whether a model is as identification signal on first and second axial connecting line of vehicle, and being equipped with seven pairs of infrared sensors, the 7th pair of infrared sensor is made up of an infrared transmitter and two infrared remote receivers.
2, registering instrument according to claim 1, it is characterized in that infrared sensor is to P1P ' 1, P2P ' 2, P3P ' 3, P4P ' 4, P5P ' 5 setting height(from bottom)s are 65-90mm, the setting height(from bottom) of P6P ' 6 is 45-70mm, infrared transmitter P ' 7 and infrared remote receiver P1, P2, P3, P4, P5, P6 is contained in the same side of road, the same P1 of the setting height(from bottom) of P ' 7, infrared remote receiver P7, P8 and infrared transmitter P ' 1, P ' 2, P ' 3, P ' 4, P ' 5, P ' 6 is contained in the same side of road, P7, P8 is installed in same point, they are highly different, the P7 setting height(from bottom) is h2, the P8 setting height(from bottom) is h1, h1=0.1173(b+500)+h0mm, h2=0.147(b+500)+h0mm(b is a width of roadway, h0 is the setting height(from bottom) of P ' 7)
Each is as follows to the relative position of sensor:
l1＝p1p2＝220－490mm，
l2＝p1p3＝473－572mm，
l3＝p1p4＝516－616mm，
l4＝p1p5＝555－640mm，
l5＝p1p′7＝l4／2mm，
l6＝p2p6＝2610－2750mm，
The installation elevation angle of infrared transmitter P ' 7 be 6 ° 30 '-8 ° 30 '.
The the 1st to the 6th pair of infrared sensor is all perpendicular to the road ordinate.
3, registering instrument according to claim 2, it is characterized in that infrared sensor is to P1P ' 1, P2P ' 2, P3P ' 3, P4P ' 4, the best setting height(from bottom) of P5P ' 5 is 75mm, the best setting height(from bottom) of P6P ' 6 is 50mm, the best setting height(from bottom) of infrared transmitter P ' 7 is 75mm, the best setting height(from bottom) h2=0.1173(b+500 of infrared remote receiver P7)+75mm, the best setting height(from bottom) h1=0.147(b+500 of P8)+and 75mm, each is as follows to the optimum data of the relative position of sensor: l1=221mm.l2=470mm.l3=545mm.l4=610mm.l5=305mm.l6=2650mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93213074 CN2164577Y (en) | 1993-05-22 | 1993-05-22 | Vehicle traffic volume automatic recording instrument according to vehicle type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93213074 CN2164577Y (en) | 1993-05-22 | 1993-05-22 | Vehicle traffic volume automatic recording instrument according to vehicle type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2164577Y true CN2164577Y (en) | 1994-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93213074 Expired - Fee Related CN2164577Y (en) | 1993-05-22 | 1993-05-22 | Vehicle traffic volume automatic recording instrument according to vehicle type |
Country Status (1)
| Country | Link |
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| CN (1) | CN2164577Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329877C (en) * | 2003-12-31 | 2007-08-01 | 三星电子株式会社 | Telematics terminal and method for transmitting route guidance information data fitted to a receiving terminal |
| CN113129598A (en) * | 2019-12-31 | 2021-07-16 | 武汉万集信息技术有限公司 | Free flow vehicle type identification method, system and equipment based on infrared camera |
-
1993
- 1993-05-22 CN CN 93213074 patent/CN2164577Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329877C (en) * | 2003-12-31 | 2007-08-01 | 三星电子株式会社 | Telematics terminal and method for transmitting route guidance information data fitted to a receiving terminal |
| CN113129598A (en) * | 2019-12-31 | 2021-07-16 | 武汉万集信息技术有限公司 | Free flow vehicle type identification method, system and equipment based on infrared camera |
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| CF01 | Termination of patent right due to non-payment of annual fee |