CN206833707U - A kind of traffic flow detector - Google Patents
A kind of traffic flow detector Download PDFInfo
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- CN206833707U CN206833707U CN201720653450.XU CN201720653450U CN206833707U CN 206833707 U CN206833707 U CN 206833707U CN 201720653450 U CN201720653450 U CN 201720653450U CN 206833707 U CN206833707 U CN 206833707U
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- traffic flow
- flow detector
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Abstract
The utility model proposes a kind of traffic flow detector, its shell includes four sides and bottom surface, cover top portion opening and by top cover by upper table face closure；Pass through multiple one-level spring supportings between top cover and enclosure bottom, it is connected in top cap central position by a two-level spring with being fixed on the voltage sensitive sensor of enclosure bottom, the elastic force of two-level spring is applied on voltage sensitive sensor, the voltage signal of voltage sensitive sensor output reflection pressure size；The output voltage of voltage sensitive sensor is compared with predetermined threshold value is in comparator, when the output voltage of voltage sensitive sensor is higher than predetermined threshold value, comparator exports high level, and counter counts to the quantity of high level, and count value is sent to host computer by wireless base station apparatus.Road pavement is destroyed small during traffic flow detector installation of the present utility model, and construction is simple is convenient；It is short that work progress takes the road surface time；Such as single detector damage, maintenance only need to be taken out, without cutting road surface again, the former installation line of rabbet joint can be continuing with.
Description
Technical field
Detection technique field is the utility model is related to, more particularly to a kind of traffic flow detector.
Background technology
With increasing for China's vehicles number, Real-time Traffic Information is more and more important for city management.For
For Traffic information demonstration and traffic investigation, section vehicle detection is essential.Existing section vehicle detection mainly has
Following several ways：
(1) video detection
Video detection generally needs independent vertical rod, threading；Construction takes road surface time length.
Video detection requires higher to illuminance, wind, rain, snow, mist, etc. weather and backlight can influence accuracy of detection.
Maintenance process takes road surface time length, needs work high above the ground.
In addition to Ethernet interface, video detection can meet the needs of remaining system, be used for existing section.
(2) microwave detects
Microwave detection needs vertical rod, threading, if to improve Detection results, it is necessary to set up gantry on section or be installed on
On overpass.
Microwave detection is less than 20 kilometers/hour in speed, and accuracy of detection is not high.
Utility model content
To solve above-mentioned the deficiencies in the prior art, the utility model proposes a kind of traffic flow detector, uses embedment road surface
Detector detection vehicle presence and pass through.
What the technical solution of the utility model was realized in：
A kind of traffic flow detector, its shell include four sides and bottom surface, and cover top portion opening simultaneously will be upper by top cover
Surface-closed, the inwall of four sides of top cover size and shell are bonded and slided up and down along inwall；Between top cover and enclosure bottom
By multiple one-level spring supportings, pass through a two-level spring and the pressure-responsive for being fixed on enclosure bottom in top cap central position
Device is connected, and the elastic force of two-level spring is applied on voltage sensitive sensor, the voltage letter of voltage sensitive sensor output reflection pressure size
Number；
The output voltage of voltage sensitive sensor is compared with predetermined threshold value is in comparator, when the output voltage of voltage sensitive sensor
During higher than predetermined threshold value, comparator output high level, counter counts to the quantity of high level, and count value is by wirelessly sending out
Device is sent to be sent to host computer.
Alternatively, the elastic force of single one-level spring is 50-100 times of single two-level spring elastic force.
Alternatively, for the traffic flow detector by solar powered, solar panel is arranged on top cover upper surface, and
The upper strata setting safety glass of solar panel, safety glass size are identical with solar panel, top cover size.
Alternatively, the output end of the solar panel is connected to the first power transformation circuit, the first power converter electricity
Road is modulated to the output voltage of solar panel, and output meets the voltage of lithium cell charging grade；The lithium battery point
It is not connected with the first power transformation circuit of prime and the second power transformation circuit of rear class, the second power transformation circuit will store
Cell output voltage is transformed to the supply voltage of voltage sensitive sensor, counter, wireless base station apparatus, comparator, above-mentioned default threshold
Threshold voltage is realized by the second power transformation circuit and bleeder circuit.
Alternatively, first power transformation circuit is single channel inverse excitation type converter, by the defeated of the solar panel
It is the voltage for meeting lithium cell charging grade to go out voltage transformation.
Alternatively, second power transformation circuit is multichannel inverse excitation type converter, and multichannel inverse excitation type converter is by electric power storage
Pond output voltage is transformed to the supply voltage of the voltage sensitive sensor, counter, wireless base station apparatus, comparator.
The beneficial effects of the utility model are：
(1) do not have to lay pipeline, installation is quick and easy, small on road surface influence, does not influence roadbed, road pavement
Holding time is short, safeguards simple and convenient；
(2) accuracy of detection is high, reliable and stable, is not influenceed by natural environment and weather (rain, snow, mist, night etc.).
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the layout of the utility model traffic flow detector；
Fig. 2 is the operation principle schematic diagram of the utility model traffic flow detector；
Fig. 3 is the structural representation of the utility model traffic flow detector；
Fig. 4 is the control block diagram of the utility model traffic flow detector；
Fig. 5 is the control block diagram of the power supply circuit of the utility model traffic flow detector.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in figure 1, traffic flow detector 10 of the present utility model is arranged on driveway, kept left on every driveway or
The half road surface that person keeps right opens up the line of rabbet joint, line of rabbet joint depth 3-5cm, width 3-5cm, the half that length is carriageway width, wagon flow
Amount detector is arranged in the line of rabbet joint.Because the traffic flow detector is installed on half road surface on driveway, therefore, it is oriented to by driveway
The vehicle of traveling necessarily has single wheel to roll traffic flow detector, moreover, the traffic flow detector only takes up half road surface,
The both sides wheel of vehicle has and only side can roll the traffic flow detector, it is ensured that the accuracy of detection.
Preferably, traffic flow detector of the present utility model is arranged on the solid line section in front of crossroads traffic light, because
Solid line section vehicle forbids lane change, accuracy in detection height.
As shown in Fig. 2 traffic flow detector of the present utility model is arranged in the line of rabbet joint, its top flushes with road surface, outside it
The bottom surface and side of shell are fixed in the line of rabbet joint by fluid sealant.Due to installation line of rabbet joint depth 3-5cm, width 3-5cm, therefore satisfy the need
The destruction in face is small, and construction is simple is quick, has opened up the line of rabbet joint and directly traffic flow detector is arranged in the line of rabbet joint with fluid sealant,
The road closure time is short, small to traffic impact.
As shown in figure 3, the shell 15 of traffic flow detector includes four sides and bottom surface, cover top portion opening simultaneously passes through top
Upper table face closure, top cover 11 are made up lid 11 of highstrenghtpiston, metal or glass material, the size of top cover 11 and four, shell
The inwall of side is brought into close contact and slided up and down along inwall.Pass through multiple 12, one-level springs between top cover 11 and enclosure bottom
Support, the quantity of one-level spring 12 is even number, is evenly distributed, in top cap central position by a two-level spring 13 with being fixed on
The voltage sensitive sensor 14 of enclosure bottom is connected, and the elastic force of one-level spring 12 is far longer than the elastic force of two-level spring 13, for example, single
The elastic force of individual one-level spring 12 is 50-100 times of the single elastic force of two-level spring 13.
When wheel rolls in traffic flow detector upper surface, one-level spring 12 and two-level spring in traffic flow detector
13 can all roll generation deformation due to wheel, and pressure is mainly undertaken by multiple one-level springs 12, but because the width of the line of rabbet joint is
3-5cm, therefore, the elastic deformation of spring are smaller.The elastic force of two-level spring 13 is applied on voltage sensitive sensor 14, voltage sensitive sensor
The voltage signal of output reflection pressure size.
As shown in figure 4, the output voltage of voltage sensitive sensor works as voltage sensitive sensor compared with predetermined threshold value is in comparator
Output voltage when being higher than predetermined threshold value, comparator output high level, counter counts to the quantity of high level, count value
Host computer is sent to by wireless base station apparatus.
The setting of predetermined threshold value is it is possible to prevente effectively from the interference to traffic flow detector such as pedestrian or electric car, due to row
The weight of people or electric car is smaller, all smaller to the pressure of one-level spring and two-level spring, therefore, can be with by predetermined threshold value
The interference of pedestrian or electric car is effectively filtered out, improves the accuracy of detection numerical value.
It is additionally, since the front and back wheel of a car to roll same detector or produce twice, as long as therefore by count value
Real-time wagon flow value just be can obtain except 2.
Traffic flow detector of the present utility model can be by battery powered, but replacing battery needs to divide vehicle
Stream, influences to have a good transport and communication network.Preferably, by solar powered, solar panel is arranged on top cover 11 traffic flow detector
Surface, and the upper strata of solar panel sets safety glass, safety glass size and solar panel, the size phase of top cover 11
Together.Because there is the cushioning effect of one-level spring 12 lower section of top plate 11, therefore, safety glass is set on the upper strata of solar panel
Protective effect can be achieved.
As shown in 5, the power supply circuit of the present embodiment is as follows：The output end of solar panel is connected to the change of the first electric power
Circuit is changed, the first power transformation circuit is modulated to the output voltage of solar panel, and output meets lithium cell charging etc.
The voltage of level；The lithium battery is connected with the first power transformation circuit of prime and the second power transformation circuit of rear class respectively
Connect, battery output voltage is transformed to voltage sensitive sensor, counter, wireless base station apparatus, compared by the second power transformation circuit
The supply voltage of device, above-mentioned predetermined threshold value voltage are realized by bleeder circuit.
First power transformation circuit is single channel inverse excitation type converter, and the output voltage of the solar panel is transformed to
Meet the voltage of lithium cell charging grade.
Second power transformation circuit is multichannel inverse excitation type converter, and multichannel inverse excitation type converter becomes battery output voltage
It is changed to the supply voltage of the voltage sensitive sensor, counter, wireless base station apparatus, comparator.
It is garage that need to only open up depth 3-5cm, width 3-5cm, length during traffic flow detector installation of the present utility model
The line of rabbet joint of road width half, road pavement are destroyed small and convenient without threading, vertical rod, construction is simple；When work progress takes road surface
Between it is short；Such as single detector damage, maintenance only need to be taken out, without cutting road surface again, the former installation line of rabbet joint can be continuing with.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (6)
1. a kind of traffic flow detector, it is characterised in that its shell includes four sides and bottom surface, and cover top portion opening simultaneously passes through
Upper table face closure, the inwall of four sides of top cover size and shell are bonded and slided up and down along inwall by top cover；Top cover and shell
By multiple one-level spring supportings between bottom surface, by a two-level spring and enclosure bottom is fixed in top cap central position
Voltage sensitive sensor is connected, and the elastic force of two-level spring is applied on voltage sensitive sensor, voltage sensitive sensor output reflection pressure size
Voltage signal；
The output voltage of voltage sensitive sensor is compared with predetermined threshold value is in comparator, when the output voltage of voltage sensitive sensor is higher than
During predetermined threshold value, comparator output high level, counter is counted to the quantity of high level, and count value is filled by transmitting wirelessly
Put and be sent to host computer.
2. a kind of traffic flow detector as claimed in claim 1, it is characterised in that the elastic force of single one-level spring is single two
50-100 times of level spring force.
3. a kind of traffic flow detector as claimed in claim 1, it is characterised in that the traffic flow detector passes through solar energy
Power supply, solar panel is arranged on top cover upper surface, and the upper strata of solar panel sets safety glass, safety glass chi
It is very little identical with solar panel, top cover size.
4. a kind of traffic flow detector as claimed in claim 3, it is characterised in that the output end of the solar panel connects
The first power transformation circuit is connected to, the first power transformation circuit is modulated to the output voltage of solar panel, output symbol
Close the voltage of lithium cell charging grade；The lithium battery respectively with the first power transformation circuit of prime and the second electric power of rear class
Translation circuit is connected, and battery output voltage is transformed to voltage sensitive sensor, counter, wireless hair by the second power transformation circuit
The supply voltage of device, comparator is sent, above-mentioned predetermined threshold value voltage is realized by the second power transformation circuit and bleeder circuit.
5. a kind of traffic flow detector as claimed in claim 4, it is characterised in that first power transformation circuit is single channel
Inverse excitation type converter, the output voltage of the solar panel is transformed to the voltage for meeting lithium cell charging grade.
6. a kind of traffic flow detector as claimed in claim 4, it is characterised in that second power transformation circuit is multichannel
Battery output voltage is transformed to the voltage sensitive sensor, counter, wireless by inverse excitation type converter, multichannel inverse excitation type converter
The supply voltage of dispensing device, comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720653450.XU CN206833707U (en) | 2017-05-27 | 2017-05-27 | A kind of traffic flow detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720653450.XU CN206833707U (en) | 2017-05-27 | 2017-05-27 | A kind of traffic flow detector |
Publications (1)
| Publication Number | Publication Date |
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| CN206833707U true CN206833707U (en) | 2018-01-02 |
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ID=60773298
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720653450.XU Active CN206833707U (en) | 2017-05-27 | 2017-05-27 | A kind of traffic flow detector |
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| CN (1) | CN206833707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111311924A (en) * | 2020-02-29 | 2020-06-19 | 武汉理工大学 | Traffic flow monitoring system and method based on pressure sensing |
-
2017
- 2017-05-27 CN CN201720653450.XU patent/CN206833707U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111311924A (en) * | 2020-02-29 | 2020-06-19 | 武汉理工大学 | Traffic flow monitoring system and method based on pressure sensing |
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