CN2204440Y - Intelligent device for detecting volume of traffic - Google Patents
Intelligent device for detecting volume of traffic Download PDFInfo
- Publication number
- CN2204440Y CN2204440Y CN 93212566 CN93212566U CN2204440Y CN 2204440 Y CN2204440 Y CN 2204440Y CN 93212566 CN93212566 CN 93212566 CN 93212566 U CN93212566 U CN 93212566U CN 2204440 Y CN2204440 Y CN 2204440Y
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- CN
- China
- Prior art keywords
- sensor
- traffic flow
- power supply
- printer
- display
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Traffic Control Systems (AREA)
Abstract
The utility model relates to an intellectualized device for detecting traffic flow, which is composed of an outer case, an infrared sensor, a geomagnetic sensor, a keyboard, a display, a printer, a storing card, a power supply and interface circuits of the infrared sensor and the geomagnetic sensor. The detector uses the combination of a photoelectric infrared switch and the detection technology of the geomagnetic sensor to respectively detect motor vehicles and non-motor vehicles. The detector carries out automatic recognition and classification of the motor vehicles in accordance with the number of axles, the axle distance and the tyre size, which realizes automatic numerical statement, conversion, display, storage and printing of the traffic flow. The utility model has the advantages of simple structure, low cost, convenient repair and use and high precision, which is an ideal detector for the traffic flow.
Description
The utility model relates to a kind of magnitude of traffic flow detecting device, promptly a kind of machines motor-car and intelligent detecting device of bicycle flow of being used for.
At present, the statistical method of China's magnitude of traffic flow mainly contains two big classes: a class is the artificial observation method, and a class is automatic observation method.The artificial observation method is by artificial observation, presses the method for mechanical counter again, is suitable for any place, carry out traffic flow investigation in any case, maneuverability is easy to grasp, but long-time observation, it is bigger influenced by human factor, and accuracy of observation is difficult for guaranteeing, and required expense height.Automatically observation method utilizes automatic observer to carry out collection, record and the demonstration of data, generally is divided into pneumatic type and geomagnetic type.A common drawback of these two kinds of methods is to write down the sum of vehicle flowrate, and can not be automatically to vehicle classification.The method of external useful telephotography is discerned the report with statistical vehicle flowrate, but most equipment complexity costs an arm and a leg, and operation and popularization are required the technical merit height, is not easy to large tracts of land and promotes the use of.
The purpose of this utility model is to seek a kind of simple in structure, price is lower, uses easy to maintenancely, can realize automatic statistics, identification, demonstration, conversion to the magnitude of traffic flow, the intelligent detector of storage and print result is in order to overcome the deficiency of existing traffic detector.
The utility model can reach by following proposal:
The utility model includes: the interface circuit of shell, infrared sensor, geomagnetic sensor, keyboard, CPU (central processing unit), display, printer, storage card, power supply and above-mentioned two kinds of sensors.Infrared sensor is Photoelectric infrared switch, finished the isolation of signal by photo-coupler TIL113.Geomagnetic sensor is the multiturn coil that has magnetic core, and keyboard is touch thin film switch, and display is a LCDs, and printer is miniature stylus printer, power supply be+5 and+the 12V Switching Power Supply, storage card is made up of the erasable eeprom chip that removes.
The utility model combines Photoelectric infrared switch with the geomagnetic type detection technique, with Photoelectric infrared switch machines motor-car, according to the number of axle of vehicle, wheelbase and tire specification are classified automatically to motor vehicle, utilize geomagnetic type sensor bicycle, and utilize the way of artificial sampling to classify.This instrument can be measured the speed of a motor vehicle in the record statistics magnitude of traffic flow, can the automatic distinguishing uplink and downlink, show the vehicle fleet of uplink and downlink and the vehicle number of 11 kinds of vehicles automatically, and the result of record converts automatically, prints 24 hour record results; Can with the data-storing of record in EEPROM, serve and report after tier-1 supervisor department converts diskette file to; Has the alternating current-direct current auto-conversion function.
The utility model has the advantages that an infrared electro sensing technology combines with the geomagnetic type sensing technology, thereby it is simple in structure, cheap, use easy to maintenance, can realize automatic statistics, identification, demonstration, conversion, storage and printing to the magnitude of traffic flow, be a kind of desirable magnitude of traffic flow detecting device.
Below in conjunction with accompanying drawing the utility model is done detailed description further.
Fig. 1 is the one-piece construction composition diagram.
Fig. 2 is the structural principle block scheme.
The probe mounting location drawing of two sensors when Fig. 3 is use.
Fig. 4 is the oscillogram in the measuring process.
Fig. 5 is infrared photoelectric sensor interface circuit figure.
Shown in Fig. 1-5, this instrument package contains shell (9), infrared sensor (1), geomagnetic sensor (2), keyboard (3), CPU (central processing unit) (4), display (5), printer (6), storage card (7) and power supply (8).The interface circuit that also comprises above-mentioned two kinds of sensors.Fig. 5 is an interface circuit of infrared sensor (1).Infrared sensor (1) is a Photoelectric infrared switch, is finished the isolation of signal by photoelectrical coupler TIL113.Geomagnetic sensor (2) is for having the multiturn coil of magnetic core.Keyboard (3) is touch thin film switch, and display (5) is that LCDs, printer (6) are 5V and 12V Switching Power Supply for miniature stylus printer, power supply (8), and storage card (7) is made up of erasable eeprom chip.
Of the present utility modelly install and use principle as shown in Figure 4.
Whole road surface is wide to be 12m, upper and lower track is installed two pairs of Photoelectric infrared switches (1) and two geomagnetic type sensors (2) respectively, distance between two pairs of Photoelectric infrared switches (1) is 3000mm, and Photoelectric infrared switch (1) is 300mm apart from the height on road surface, by arranging perpendicular to the road ordinate.In order to obtain the shielding signals of tire.A geomagnetic sensor (2) is installed to detect bicycle in the roadside in each track one side every 1m.
With S1, S2 in the infrared sensor (1) in the accompanying drawing 2,3 is example, picks up counting when vehicle front-wheel arrives S1 computer-chronograph (4), and current the wheel when arriving S2 noted T1 during this period of time, and S1 is known to the distance L of S2, so the speed V=L/T1 of vehicle.Take turns to the T2 during this period of time that S1 begins to arrive to trailing wheel S1 is the time that wheelbase passes through in the past, and speed is obtained, and the time is also known, so wheelbase d=VT2=L/T1T2.Thereby finish the measurement of wheelbase.The pulse width that front-wheel blocks S1 is T3, and then this tire is at the chord length r=L/T1T3 that highly locates from road surface 300mm.By to the step-by-step counting on S1 or the S2, just obtained the number of axle N of vehicle.The oscillogram of measuring process as shown in Figure 4.
According to statistical study to the wheelbase of a large amount of motor vehicles of homemade and import, the number of axle, three parameters of tire specification, list the vehicle classification table, after computing machine (4) is measured T1, T2, T3 and N, calculate d and r, then with the vehicle classification table on data analyze comparison, make classification and judge, thereby the detection and Identification of having finished motor vehicle are classified.Bicycle detects by the signal of geomagnetic sensor (2) induction, computing machine (4) record sum, give computing machine (4) by the sampling number that is animal-drawn vehicle, rickshaw, bicycle manually three kinds of bicycles after, calculate the quantity of various vehicles automatically.
Claims (1)
1, a kind of intelligent traffic flow detector, by CPU (central processing unit) is that computing machine (4) processes machine, integrate Photoelectric infrared switch and geomagnetic sensing technology, it is characterized in that this detecting device includes shell (9), infrared sensor (1), geomagnetic sensor (2), keyboard (3), display (5), printer (6), storage card (7) and power supply (8), also comprises the interface circuit of above-mentioned two kinds of sensors; Infrared sensor (1) is a Photoelectric infrared switch, finish the isolation of signal by photoelectrical coupler TIL113, geomagnetic sensor (2) is for having the multiturn coil of magnetic core, keyboard (3) is touch thin film switch, display (5) is the liquid crystal Chinese characters display screen, printer (6) is miniature stylus printer, and power supply (8) is 5V and 12V Switching Power Supply, and storage card (7) is wiped eeprom chip for electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93212566 CN2204440Y (en) | 1993-05-12 | 1993-05-12 | Intelligent device for detecting volume of traffic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93212566 CN2204440Y (en) | 1993-05-12 | 1993-05-12 | Intelligent device for detecting volume of traffic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2204440Y true CN2204440Y (en) | 1995-08-02 |
Family
ID=33793871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93212566 Expired - Fee Related CN2204440Y (en) | 1993-05-12 | 1993-05-12 | Intelligent device for detecting volume of traffic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2204440Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978862A (en) * | 2014-04-13 | 2015-10-14 | 北京工业大学 | Traffic counting model flowmeter |
| CN109493615A (en) * | 2018-11-23 | 2019-03-19 | 江苏华存电子科技有限公司 | A kind of terminal detecting device |
-
1993
- 1993-05-12 CN CN 93212566 patent/CN2204440Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978862A (en) * | 2014-04-13 | 2015-10-14 | 北京工业大学 | Traffic counting model flowmeter |
| CN109493615A (en) * | 2018-11-23 | 2019-03-19 | 江苏华存电子科技有限公司 | A kind of terminal detecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |