CN105788290A - Automatic speed measuring device for speed-limit roads - Google Patents
Automatic speed measuring device for speed-limit roads Download PDFInfo
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- CN105788290A CN105788290A CN201410805509.3A CN201410805509A CN105788290A CN 105788290 A CN105788290 A CN 105788290A CN 201410805509 A CN201410805509 A CN 201410805509A CN 105788290 A CN105788290 A CN 105788290A
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- speed
- integrated
- measuring device
- magnetic induction
- amplifying circuit
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Abstract
The invention discloses an automatic speed measuring device for speed-limit roads. The automatic speed measuring device comprises magnetic induction sensors, a monostable trigger, an integrated AND gate, an amplifying circuit and an LED display device. At least two magnetic induction sensors are adopted; the magnetic induction sensors are connected with the monostable trigger; the monostable trigger is connected with the integrated AND gate; the integrated AND gate is connected with the amplifying circuit; and the amplifying circuit is connected with the LED display device. The automatic speed measuring device provided by the invention has the advantages of compact structure, portability, small power, low energy consumption and low investment, and can facilitate popularization.
Description
Technical field
The invention belongs to electronic sensor and control technical field, relating to a kind of automatic speed measuring device for speed-limit roads.
Background technology
Along with popularizing of automobile, on present road, vehicle gets more and more, and in order to ensure traffic safety, the speed limit on road, the deceleration facilities of Dangerous Area are essential.The commonly used radar velocity measurement of speed-limiting device on road draws the movement velocity of testee according to the calculating of the echo frequency shift amount received, if it exceeds limit speed per hour then record car plate, vehicle can not be reminded it slow down in time in most cases.
Therefore, have automatically controlling hypervelocity warning, prompting slow down road automatic speed measuring device for speed-limit roads there is practical value.
Summary of the invention
Technical problem solved by the invention is in that to provide the control device relating to a kind of signal generator, to solve the shortcoming in above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
A kind of control device of signal generator, including magnetic induction sensor, monostable flipflop, integrated with door, amplifying circuit, LED display, at least provided with two magnetic induction sensors, described magnetic induction sensor connects monostable flipflop, monostable flipflop connects integrated with door, integrated being connected amplifying circuit with door, amplifying circuit connects LED display.
The operation principle of this numerical frequency counter device of the present invention is:
For travelling in road vehicle, a small distance can be considered be distributed on road before and after two parallel line of induction a, distance d between b, it is the Herba Plantaginis end time difference t=t2-t1 by these two lines of induction by the time of this distance, d, and the time difference T standard=d/V standard of distance d is passed through with standard speed, the degree whether notification portion and deceleration part are exceeded the speed limit by the multilevel iudge vehicle of t and T and exceeded the speed limit, thus reacting in real time: work as overspeed of vehicle, namely vehicle arrives the b position of device before the T moment, overspeed of vehicle will be warned by the prompting part of this timer；Otherwise, when vehicle does not exceed the speed limit, then smoothly pass without reminding.By 2-3 Hall element parallel connection, laterally arranged a track forms vehicle identification line to this device, when detecting line a and having vehicle to sail, triggering by first 555 monostable flipflop formed, export high level, its delay time T is determined by the parameter of the resistance triggered in circuit and electric capacity.Through travel time t, vehicle drives to detection line b, triggers the monostable flipflop output high level of corresponding second 555 composition.If any hypervelocity, then t < T, high level is by overlap, and two high level are sent into and will be exported high level by integrated AND circuit.And the degree exceeded the speed limit is judged by output time, and to exceed the speed limit more serious, the time exporting high level with door is more long, thus controlling the warning lamp instruction to hypervelocity degree.As speed is normal, high level is not overlapping, does not export high level with door.With the high level of door output after amplifying circuit, LED display circuit display whether hypervelocity.
Beneficial effect
The invention have the advantages that
1) device circuit is simple: can realize the real time measure speed, reminds deceleration in time；
2) speed variable is limited: under different weather conditions, it is possible to set different restriction speed；
3) low in energy consumption, energy-conservation.It is minimum that package unit static state waits for electric current, consumes energy little；
4) low price: relative to conventional radar meter, circuit is simple, less costly；
5) easy to implement, put into not high, be conducive to promotion and implementation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Referring to Fig. 1, a kind of control device of signal generator, including magnetic induction sensor 1, monostable flipflop 2, integrated with door 3, amplifying circuit 4, LED display 5, magnetic induction sensor 6, monostable flipflop 7, described magnetic induction sensor 1 connects monostable flipflop 2, magnetic induction sensor 6 connects monostable flipflop 7, monostable flipflop 2 and monostable flipflop 7 connect and integrated integrated with door 3 are connected amplifying circuit 4 with door, and amplifying circuit 4 connects LED display 5.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described; skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; described in above-described embodiment and description is that principles of the invention is described; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements both fall within the claimed scope of the invention, and claimed scope is defined by appending claims and equivalent thereof.
Claims (1)
1. the control device of a signal generator, including magnetic induction sensor, monostable flipflop, integrated with door, amplifying circuit, LED display, it is characterized in that, at least provided with two magnetic induction sensors, described magnetic induction sensor connects monostable flipflop, monostable flipflop connects integrated with door, integrated is connected amplifying circuit with door, amplifying circuit connection LED display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805509.3A CN105788290A (en) | 2014-12-23 | 2014-12-23 | Automatic speed measuring device for speed-limit roads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805509.3A CN105788290A (en) | 2014-12-23 | 2014-12-23 | Automatic speed measuring device for speed-limit roads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105788290A true CN105788290A (en) | 2016-07-20 |
Family
ID=56386186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410805509.3A Withdrawn CN105788290A (en) | 2014-12-23 | 2014-12-23 | Automatic speed measuring device for speed-limit roads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105788290A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109118788A (en) * | 2018-10-21 | 2019-01-01 | 河南汇纳科技有限公司 | A kind of high speed violation prompt system |
-
2014
- 2014-12-23 CN CN201410805509.3A patent/CN105788290A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109118788A (en) * | 2018-10-21 | 2019-01-01 | 河南汇纳科技有限公司 | A kind of high speed violation prompt system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160720 |