CN106327594B - A kind of illegal signal shielding device of automobile of taximeter and method - Google Patents
A kind of illegal signal shielding device of automobile of taximeter and method Download PDFInfo
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- CN106327594B CN106327594B CN201610642296.6A CN201610642296A CN106327594B CN 106327594 B CN106327594 B CN 106327594B CN 201610642296 A CN201610642296 A CN 201610642296A CN 106327594 B CN106327594 B CN 106327594B
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B13/00—Taximeters
- G07B13/02—Details; Accessories
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- General Physics & Mathematics (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
Abstract
The present invention provides a kind of illegal signal shielding device of automobile of taximeter and method, the device include input optocoupler, comparator, microcontroller, output photoelectric coupler and acoustic alarm；The valuation pulse input end of the input terminal connection taximeter of the input optocoupler, the input terminal of the output end connection comparator of the input optocoupler, the input terminal of the output end connection microcontroller of the comparator, the input terminal of the output photoelectric coupler connects the output end of microcontroller, the photoelectric coupler output end of the output end connection taximeter of the output photoelectric coupler with the input terminal of acoustic alarm.Apparatus of the present invention are embedded into existing taximeter enclosure interior, and for filtering, identifying, controlling the pre-input pulse of taximeter, the behavior practiced fraud using taxi charging is avoided on technological layer.
Description
Technical field
The invention belongs to taxi special measuring technical fields, and in particular to a kind of illegal signal of taximeter
Screening arrangement and method.
Background technique
As urban construction is increasingly accelerated, taxi has become the indispensable vehicles in for people's lives.It hires out
How much measurement instrument of the automobile meter as trade settlement, the amount of money shown on screen are taxi owners to passenger
Receive the foundation of What are your rates by bus.The interests of both sides are directly related to whether meter accurate measurement, however, China goes out at present
The service condition for renting automobile meter can not make one optimistic, the complaint in terms of taximeter misalignment is often connected to, from quilt
It complains the taximeter controlled on the spot calibrating discovery taximeter to show to all go well, various technical parameters meet
The regulation of the People's Republic of China (PRC) " Taxi Fare Register Appraisal regulation " (JJG517-2009), but passenger's is practical by bus
The amount of money that mileage and meter are shown obviously is not inconsistent, and finds to be mounted with certain arteries and veins privately on such taxi by further checking
Generator is rushed, after tested, can arbitrarily increase the record mileage number of meter by the impulse generator, 10 can be increased per minute
As many as several kilometers.For another example according to Eastday on 08 20th, 2011, " day before yesterday 4:00 AM 45 is divided to law enfrocement official to go out two
It hires a car and is checked, discovery first car installs impulse generator privately, which is connect with a conducting wire with meter
Mouth connects, and is placed with a black remote controler on the door by the vehicle operating seat.It is distant by this through live preliminary test
Control device can arbitrarily increase meter mileage number, can increase more than 13 kilometers per minute ".Report May 27 in 2014 is ruled by law according to another Shanghai
The report of day, " recently, law enfrocement official just investigates and prosecutes the taxi that an installation " fractional motor " is practiced fraud in meter inspection center, city,
And investigation of putting on record in accordance with the law ".It should be " even if vehicle, in stationary state, driver can also make the vehicle meter by pressing the heating key in compartment
Milimeter number on valence device increases ".Bad taxi-driver practice fraud this phenomenon close using juggling things outside meter
It can be frequently referred in the newspaper and news in year, the taxi operation situation in current many cities equally allows of no optimist, related function portion
Door is often connected to complaint of the cab-getter about taxi overcharge, is the discovery that on illegal taxi and installs additional by inspection
" running a good foot " (being commonly called as " flivver ") or the illegal device such as be mounted with impulse generator, it is more hidden due to the installation of malpractices equipment
It covers, general passenger is difficult to find.This phenomenon has seriously encroached on the consumptive interests of passenger and has destroyed the society of fair consumption
Principle.
Taximeter is the specially-used measuring instrument of clearing of carrying on trade between taxi operator and passenger, China
Regulation taximeter is the measurement instrument of state compulsion management in measurement Law, has been included in and has forced inspection for the big emphasis of country six
Determine one of measurement instrument, its magnitude accurately whether will will have a direct impact on the service quality of taxi, be related to operator and
Economic interests between consumer.Anti- cheating is both one of content of metrological supervision and administration, and the strong inspection work seriousness of maintenance
Needs.
Although having carried out certain researchs on the problem of preventing taximeter from practicing fraud, the practical application paid is not
It is more.Therefore, there is a kind of a kind of intelligent taxi meter that can fundamentally shield illegal signal input in the current an urgent demand in China
Valence device can find whether taximeter has the detection device for shielding illegal signal input and valuate with taxi in time
Device matches to block and practice fraud, and technically and in practice blocking malicious person utilizes certain defects of taximeter
Carry out the base hope of charging malpractices and impulsion of practicing fraud.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of illegal signal shielding device of automobile of taximeter and side
Method.
The technical scheme is that
A kind of illegal signal shielding device of automobile of taximeter, including input optocoupler, comparator, microcontroller
Device, output photoelectric coupler and acoustic alarm；
The valuation pulse input end of the input terminal connection taximeter of the input optocoupler, the input
The input terminal of the output end connection comparator of photoelectrical coupler, the input terminal of the output end connection microcontroller of the comparator,
The output end of the input terminal connection microcontroller of the input terminal and acoustic alarm of the output photoelectric coupler, the output light
The photoelectric coupler output end of the output end connection taximeter of electric coupler, the photoelectricity of the taximeter
Coupler output is located in the valuation pulse input channel of taximeter；
The input optocoupler is transmitted to comparator by photoelectric coupling for that will valuate pulse input signal；
The comparator is filtered the pretreatment with shaping for the pulse input signal that will valuate, and is transmitted to micro-control
Device processed；
The microcontroller, for determining valuation mileage according to the valuation pulse input signal in time t, further according to valuation
Mileage obtains the speed of service and acceleration of taxi, if taxi vapour of the obtained taxi operating speed beyond setting
The operation acceleration that the acceleration of the speed of service or taxi that vehicle allows allows beyond the taxi of setting, then close
The input signal of disconnected output photoelectric coupler, and control acoustic alarm and issue audible alarm, if obtained taxi operation
Velocity and acceleration within the allowable range, then controls output photoelectric coupler output valuation pulse signal to taxi valuation
The photoelectric coupler output end of device；
The output photoelectric coupler, for working as obtained taxi operating speed and acceleration within the allowable range
When, output valuation pulse signal；
The acoustic alarm, for being controlled by microcontroller, when obtained taxi operating speed is beyond setting
The operation acceleration that the acceleration of the speed of service or taxi that taxi allows allows beyond the taxi of setting
When issue audible alarm.
Optionally, the time t is the time of 10-20 valuation pulse.
The method that illegal signal shielding is carried out using the illegal signal shielding device of automobile of taximeter, including following step
It is rapid:
Step 1: valuation pulse input signal is transmitted to by comparator by photoelectrical coupler；
Step 2: valuation pulse input signal being pre-processed by comparator, and is transmitted to microcontroller；
Step 3: valuation mileage being determined according to the valuation pulse input signal in time t by microcontroller, further according to meter
Valence mileage obtains the speed of service and acceleration of taxi；
Step 4: whether the taxi operating speed and acceleration judged by microcontroller be in allowed band
It is interior, if so, thening follow the steps 5, otherwise, execute step 6；
Step 5: output photoelectric coupler output valuation pulse signal is controlled to taximeter by microcontroller
Photoelectric coupler output end；
Step 6: turning off the input signal of output photoelectric coupler by microcontroller, and control acoustic alarm and issue sound
Ring alarm.
Beneficial effects of the present invention:
The present invention proposes a kind of illegal signal shielding device of automobile of taximeter and method, the device be embedded into it is existing go out
Meter enclosure interior of hiring a car proposes a kind of general for filtering, identifying, controlling the pre-input pulse of taximeter
The illegal signal of the anti-shielding of meter identification and controlling soil moist, be suitable for various types meter, to realize in terms of taxi
The monitoring and prevention of valence device corrupt practice are avoided on technological layer and are counted using certain defects of taximeter
Take the behavior practiced fraud.
Detailed description of the invention
Fig. 1 is the circuit diagram of the illegal signal shielding device of automobile of taximeter in the specific embodiment of the invention；
Fig. 2 is existing taximeter valuation pulse input channel circuit figure；
Fig. 3 is the flow chart of the illegal signal shielding method of taximeter in the specific embodiment of the invention.
Specific embodiment
The specific embodiment of the invention is described in detail with reference to the accompanying drawing.
A kind of illegal signal shielding device of automobile of taximeter, including input optocoupler, comparator, microcontroller
Device, output photoelectric coupler and acoustic alarm.
In present embodiment, hired out as shown in Figure 1, the input photodiode side of input optocoupler OPTO1 connects
Automobile valuation pulse input channel circuit inputs photodiode side, the current collection of the triode side of input optocoupler OPTO1
Pole connects one end of power Vcc and resistance R2, the emitter connection resistance R1's of the triode side of input optocoupler OPTO1
The electrode input end of one end and comparator OP1, one end of the other end connection resistance R3 of resistance R2 and the cathode of comparator OP1 are defeated
Enter end, the input terminal of the output end connection microcontroller of comparator OP1, two pole of input photoelectricity of output photoelectric coupler OPTO2
The cathode of pipe side connects the output end of microcontroller with the input terminal of acoustic alarm bell, output photoelectric coupler OPTO2's
One end of the anode connection resistance R4 of photodiode side is inputted, the other end of resistance R4 connects power Vcc, output photoelectric coupling
The photoelectric coupler output end of the triode side connection taximeter of device OPTO2, the photoelectricity coupling of taximeter
Clutch output end is located in the valuation pulse input channel of taximeter.
Input optocoupler OPTO1 is transmitted to comparator by photoelectric coupling for that will valuate pulse input signal.
Comparator OP1 is filtered the pretreatment with shaping for the pulse input signal that will valuate, and is transmitted to microcontroller
Device.
Microcontroller, for determining valuation mileage according to the valuation pulse input signal in time t, further according to valuation mileage
The speed of service and acceleration of taxi are obtained, if obtained taxi operating speed is permitted beyond the taxi of setting
Perhaps the operation acceleration that the acceleration of the speed of service or taxi allows beyond the taxi of setting, then turn off defeated
The input signal of photoelectrical coupler out, and control acoustic alarm and issue audible alarm, if obtained taxi operating speed
Within the allowable range with acceleration, then output photoelectric coupler output valuation pulse signal is controlled to taximeter
Photoelectric coupler output end.
In present embodiment, time t is 10s, and taximeter is (or soft by being connected to automobile gearbox gear
Axis) on sensor, the mechanical signal of wheel revolutions is become into electric impulse signal, while clock circuit is to the standard time of feeding
Signal carries out timing, to achieve the purpose that comprehensive valuation.The meter being mounted in specific vehicle, unit mileage are obtained
Pulse signal is a specific value, and according to different taxi vehicles, every kilometer of taximeter receives taxi vehicle
The electronic impulse number that converts through meter sensor of wheel revolution is probably between 500-1500), the taxi in time t
Valuation mileage calculation formula such as formula (1) shown in:
S=P/K (1)
Wherein, S is taxi valuation mileage, and P is the pulse number that taximeter obtains, and K is in unit
Journey (1 kilometer) pulse particular value.
Microcontroller obtains the speed of service of taxi and the formula such as formula (2) and public affairs of acceleration according to valuation mileage
Shown in formula (3):
V=S/t (2)
A=V/t (3)
Wherein, V is the speed of service of taxi, and a is the acceleration of taxi.
In present embodiment, one embodiment that taxi allows is that the speed of service is to permit less than 120 kilometers/hour
Perhaps acceleration is less than 8 kilometer per seconds2。
If the speed of service or taxi of taxi permission of the obtained taxi operating speed beyond setting
Acceleration beyond setting taxi allow operation acceleration, then turn off the input signal of output photoelectric coupler, and
It controls acoustic alarm and issues audible alarm, stop charging and by acoustic alarm alarm to realize come reminding passengers.
If obtained taxi operating speed and acceleration are within the allowable range, output photoelectric coupler is controlled
OPTO2 exports the photoelectric coupler output end of valuation pulse signal to taximeter.
Output photoelectric coupler OPTO2, for when obtained taxi operating speed and acceleration is in allowed band
When interior, output valuation pulse signal.
Acoustic alarm, for being controlled by microcontroller, when taxi of the obtained taxi operating speed beyond setting
It is sent out when the operation acceleration that the acceleration of the speed of service or taxi that automobile allows allows beyond the taxi of setting
Audible alarm out.
The illegal signal shielding device of automobile of taximeter of the invention is one using microcontroller as the device of core, is used
The device substitutes photoelectrical coupler such as Fig. 2 institute of the signal for input pulse on existing taximeter circuit board
Show, i.e., substitutes existing taximeter circuit board with the input photodiode of input optocoupler OPTO1 of the invention
On input photodiode, substitute existing taxi with the triode side of output photoelectric coupler OPTO2 of the invention and valuate
Triode side on device circuit board can complete the measurement, anticipation and blocking work of the signal of input pulse.
The method that illegal signal shielding is carried out using the illegal signal shielding device of automobile of taximeter, as shown in figure 3, packet
Include following steps:
Step 1: valuation pulse input signal is transmitted to by comparator by photoelectrical coupler.
Step 2: valuation pulse input signal being pre-processed by comparator, and is transmitted to microcontroller.
Step 3: valuation mileage being determined according to the valuation pulse input signal in time t by microcontroller, further according to meter
Valence mileage obtains the speed of service and acceleration of taxi.
Step 4: whether the taxi operating speed and acceleration judged by microcontroller be in allowed band
It is interior, if so, thening follow the steps 5, otherwise, execute step 6.
Step 5: output photoelectric coupler output valuation pulse signal is controlled to taximeter by microcontroller
Photoelectric coupler output end.
Step 6: turning off the input signal of output photoelectric coupler by microcontroller, and control acoustic alarm and issue sound
Ring alarm.
Claims (3)
1. a kind of illegal signal shielding device of automobile of taximeter, which is characterized in that the illegal letter of taximeter
Number screening arrangement is one using microcontroller as the device of core, is used on existing taximeter circuit board for substituting
The photoelectrical coupler of the signal of input pulse, including input optocoupler, comparator, microcontroller, output photoelectric coupler
And acoustic alarm；
The valuation pulse input end of the input terminal connection taximeter of the input optocoupler, the input photoelectricity
The input terminal of the output end connection comparator of coupler, the input terminal of the output end connection microcontroller of the comparator are described
The input terminal of output photoelectric coupler connects the output end of microcontroller, the output light thermocouple with the input terminal of acoustic alarm
The photoelectric coupler output end of the output end connection taximeter of clutch, the photoelectric coupling of the taximeter
Device output end is located in the valuation pulse input channel of taximeter；
The input optocoupler is transmitted to comparator by photoelectric coupling for that will valuate pulse input signal；
The comparator is filtered the pretreatment with shaping for the pulse input signal that will valuate, and is transmitted to microcontroller；
The microcontroller, for determining valuation mileage according to the valuation pulse input signal in time t, further according to valuation mileage
The speed of service and acceleration of taxi are obtained, if obtained taxi operating speed is permitted beyond the taxi of setting
Perhaps the operation acceleration that the acceleration of the speed of service or taxi allows beyond the taxi of setting, then turn off defeated
The input signal of photoelectrical coupler out, and control acoustic alarm and issue audible alarm, if obtained taxi operating speed
Within the allowable range with acceleration, then output photoelectric coupler output valuation pulse signal is controlled to taximeter
Photoelectric coupler output end；
The output photoelectric coupler, for when obtained taxi operating speed and acceleration within the allowable range when,
Output valuation pulse signal；
The acoustic alarm, for being controlled by microcontroller, when taxi of the obtained taxi operating speed beyond setting
It is sent out when the operation acceleration that the acceleration of the speed of service or taxi that automobile allows allows beyond the taxi of setting
Audible alarm out.
2. the illegal signal shielding device of automobile of taximeter according to claim 1, which is characterized in that the time
T is the time of 10-20 valuation pulse.
3. carrying out the side of illegal signal shielding using the illegal signal shielding device of automobile of taximeter described in claim 1
Method, which comprises the following steps:
Step 1: valuation pulse input signal is transmitted to by comparator by photoelectrical coupler；
Step 2: valuation pulse input signal being pre-processed by comparator, and is transmitted to microcontroller；
Step 3: valuation mileage being determined according to the valuation pulse input signal in time t by microcontroller, further according in valuation
Journey obtains the speed of service and acceleration of taxi；
Step 4: the taxi operating speed and acceleration judged by microcontroller whether within the allowable range, if
It is to then follow the steps 5, otherwise, executes step 6；
Step 5: the light of output photoelectric coupler output valuation pulse signal to taximeter is controlled by microcontroller
Electric coupler output end；
Step 6: turning off the input signal of output photoelectric coupler by microcontroller, and control acoustic alarm and issue sound equipment report
It is alert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642296.6A CN106327594B (en) | 2016-08-08 | 2016-08-08 | A kind of illegal signal shielding device of automobile of taximeter and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642296.6A CN106327594B (en) | 2016-08-08 | 2016-08-08 | A kind of illegal signal shielding device of automobile of taximeter and method |
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| Publication Number | Publication Date |
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| CN106327594A CN106327594A (en) | 2017-01-11 |
| CN106327594B true CN106327594B (en) | 2019-03-12 |
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| CN201610642296.6A Active CN106327594B (en) | 2016-08-08 | 2016-08-08 | A kind of illegal signal shielding device of automobile of taximeter and method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783030A (en) * | 2009-10-29 | 2010-07-21 | 北京拓盛电子科技有限公司 | Anti-cheating pricing system and method for taxi |
| CN202013597U (en) * | 2011-04-15 | 2011-10-19 | 四川广宏科技有限公司 | Intelligent anti-cheating taxi tax control taximeter |
| CN202523114U (en) * | 2012-04-09 | 2012-11-07 | 山东省计量科学研究院 | Taximeter with intelligent diagnosis and anti-spam function |
| CN103793942A (en) * | 2014-01-22 | 2014-05-14 | 桂林市临桂佳业机械厂 | Taxi billing system based on single-chip microcomputer |
| CN204087273U (en) * | 2014-07-11 | 2015-01-07 | 湖南科技学院 | A kind of taximeter of anti-cheating |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140278838A1 (en) * | 2013-03-14 | 2014-09-18 | Uber Technologies, Inc. | Determining an amount for a toll based on location data points provided by a computing device |
-
2016
- 2016-08-08 CN CN201610642296.6A patent/CN106327594B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783030A (en) * | 2009-10-29 | 2010-07-21 | 北京拓盛电子科技有限公司 | Anti-cheating pricing system and method for taxi |
| CN202013597U (en) * | 2011-04-15 | 2011-10-19 | 四川广宏科技有限公司 | Intelligent anti-cheating taxi tax control taximeter |
| CN202523114U (en) * | 2012-04-09 | 2012-11-07 | 山东省计量科学研究院 | Taximeter with intelligent diagnosis and anti-spam function |
| CN103793942A (en) * | 2014-01-22 | 2014-05-14 | 桂林市临桂佳业机械厂 | Taxi billing system based on single-chip microcomputer |
| CN204087273U (en) * | 2014-07-11 | 2015-01-07 | 湖南科技学院 | A kind of taximeter of anti-cheating |
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| CN106327594A (en) | 2017-01-11 |
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