CN105427627B - One kind is parked entrance traffic flow detecting method and its a system - Google Patents
One kind is parked entrance traffic flow detecting method and its a system Download PDFInfo
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- CN105427627B CN105427627B CN201510974311.2A CN201510974311A CN105427627B CN 105427627 B CN105427627 B CN 105427627B CN 201510974311 A CN201510974311 A CN 201510974311A CN 105427627 B CN105427627 B CN 105427627B
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/065—Traffic control systems for road vehicles by counting the vehicles in a section of the road or in a parking area, i.e. comparing incoming count with outgoing count
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/149—Traffic control systems for road vehicles indicating individual free spaces in parking areas coupled to means for restricting the access to the parking space, e.g. authorization, access barriers, indicative lights
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Traffic Control Systems (AREA)
Abstract
It parks entrance traffic flow detecting method and its a system the present invention relates to one kind, acquires the adc data under without car state the method includes (1) and carry out initialization using the data and calculate initial value；(2) when receiving the electric signal that an entrance gate bar of parking lifts, start ADC samplings and the data that sampling obtains are added in buffering area, while calculating the average voltage in buffering area；(3) the adc data value read by continuous sampling calculates the average value of adc data in buffering area, is judged as having car state or without car state；(4) vehicle flow detection system by serial ports transparent transmission GPRS module by vehicle by status information be sent in cloud server；The system comprises MCU processor module, detection module of arguing for the sake of arguing, distance sensor module and serial ports transparent transmission GPRS modules.The present invention can accurately count the vehicle flowrate for an entrance of parking, and preferable solution is provided for the parking stall quantity statistics of parking of the static traffic in intelligent transportation system.
Description
Technical field
The invention belongs to traffic flow detecting method and its systems, and in particular to one kind is parked an entrance vehicle Flow Detection side
Method and its system.
Background technology
With the surge of rapid development of economy and automobile quantity, traffic congestion, traffic accident take place frequently etc. cause it is more next
More time waste, property loss and environmental pollutions, it is total that traffic problems have become the countries in the world government including China
With one of the problem faced.In order to alleviate the pressure that economic development is brought to communications and transportation, existing resource is made to play maximum effect
Answer, the Chinese government increases research to intelligent transportation system and builds dynamics, and park a vacant parking stall number accurate statistics and
An entrance vehicle Flow Detection of parking is a most basic and crucial research in the static traffic direction in intelligent transportation.
An entrance vehicle flowrate of commonly parking in the world mainly have ground induction coil, geomagnetic field sensors, video image and
Frequency microwave technology.Ground induction coil accuracy is high, simple in structure, but can not promote and answer due to needing to dig road etc. installation maintenance
With；Geomagnetic field sensors accuracy is also higher and simple in structure, but is also required to destroy an entrance road surface of parking when installation
And it needs to dig timing and replaces the reasons such as battery maintenance is more complex and hinder to promote and apply；Video detector is of high cost and at night
It is low with accuracy in detection under bad weather circumstances；Microwave is applied to the Bus- Speed Monitoring of fastlink mostly, easy for installation, but is easy
By surrounding environment influence, it is not easy to promote.
The counting to physics is realized using infrared emission mode based on infrared ray intelligent counter, but in people, three-wheel
The discrepancy of the objects such as vehicle park entrance when also will produce error count to influence an entrance car statistics accuracy of parking, because
All there is larger defect in this current entrance method for detecting passing of vehicles of parking.
Invention content
In order to solve the above problem of the existing technology, park an entrance vehicle Flow Detection the present invention provides one kind
Method and its system.Vehicle passing detection algorithm based on range sensor, can be preferably for leading in an entrance of parking
The vehicle flowrate crossed is calculated, while vehicle flow detection system will argue for the sake of arguing detection and vehicle passing detection based on range sensor
Algorithm, which is combined, preferably avoids the interference brought by people, tricycle or other objects, improves vehicle Flow Detection system
The accuracy in detection of system.
The technical solution adopted in the present invention is：
One kind is parked an entrance traffic flow detecting method, is theed improvement is that：The method includes
(1) it acquires the adc data under without car state and carries out initialization using the data and calculate initial value；
(2) when receiving the electric signal that an entrance gate bar of parking lifts, start ADC samplings and obtained data will be sampled
It is added in buffering area, while calculating the average voltage in buffering area；
(3) the adc data value read by continuous sampling calculates the average value of adc data in buffering area, is judged as there is vehicle
State or without car state；
(4) vehicle flow detection system by serial ports transparent transmission GPRS module by vehicle by status information be sent to high in the clouds clothes
It is engaged in device.
Optionally, the step (1) includes being initialized after vehicle flow detection system starts, and acquires distance under without car state and passes
The ADC values of sensor, sampling take time adc data to be calculated, and averagely obtain the average voltage under without car state, and by current vehicle
The working condition of flow quantity detecting system is switched to without car state, and system is completed to enter dormant state after initialization.
Optionally, the step (2) includes vehicle flow detection system in the electricity for receiving an entrance gate bar of parking and lifting
When signal, starts range sensor and carry out ADC samplings, and the data that sampling obtains are added in buffering area, while calculating slow
Rush the average voltage in area；If average voltage is higher than preset threshold value, to that may have the Count of Status variable of vehicle to add
1。
Optionally, the step (3) includes the adc data value of continuous sampling reading and calculates adc data in buffering area
Average value, if adc data average value be more than without car state under one fixed threshold value of ADC initial values continuously several times if will
Current state is switched to having car state, otherwise keeps the current status unchanged；If the average value of adc data is less than under without car state
Current state is continuously then switched to without car state by one fixed threshold value of ADC initial values several times, otherwise keeps current state
It is constant.
Further, if it is more than the threshold value of a counting that may continuously have the value of the Count of Status of vehicle, vehicle flowrate is examined
The working condition of examining system is switched to having car state；If the average voltage in intermediate detection to buffering area is less than and presets
The sum of threshold value, then the working condition of vehicle flow detection system is switched to without car state, while will likely have the state meter of vehicle
Numerical value resets to 0.
Further, if the average voltage of collected range sensor output voltage is less than and preset threshold value
The sum of, current state is without car state, then continues the output voltage values for acquiring range sensor；If current state is to have vehicle shape
State, then to 1 may be added without the Count of Status variable of vehicle；
If continuously may the count value without the Count of Status variable of vehicle be more than threshold value, by the current of vehicle flow detection system
Working condition is switched to without car state by having car state；If under having car state, may the Count of Status variable without vehicle it is not super
Cross threshold value, and average voltage the sum of is higher than with preset threshold value, then will likely be set to 0 without the Count of Status variable of vehicle.
Optionally, the step (4) is included in vehicle flow detection system and is switched to having car state again from having by without car state
Car state is switched under conditions of without car state, and the vehicle flow detection system is passed through vehicle by serial ports transparent transmission GPRS module
Status information be sent in cloud server.
The one kind provided the present invention is based on another object is parked an entrance vehicle flow detection system, and improvements exist
In：The system comprises MCU processor module, detection module of arguing for the sake of arguing, distance sensor module and serial ports transparent transmission GPRS modules；
The detection module of arguing for the sake of arguing is for vehicle flow detection system and gate bar signal wire to be attached；
It is described argue for the sake of arguing detection module for detect gate bar lift and fall generate electric signal be input to MCU processor module
In；
The distance sensor module is for detecting a certain range of physics with a distance from sensor, and by range information
Information of voltage is converted to be input in the ADC units of MCU processor module；
The sampling that the MCU processor module is used to start or stop to ADC according to the information of gate road bar input, and lead to
Cross the vehicle that vehicle passing detection algorithm is identified by and by by information of vehicles be sent to by serial ports transparent transmission GPRS module
In specified cloud server.
Beneficial effects of the present invention are：
The present invention only needs the power supply, the gate that connect gate road junction to argue for the sake of arguing and fall the signal that bar detects in installation and deployment
Line can be used directly, so as to avoid ground breakage caused by the road reformation entrance to park a unit of operation and
The inconvenience that the user that parks brings installs and deploys flow to enormously simplify, can be easier to obtain the approval of user and
More easily promote and apply；
Vehicle flow detection system combine argue for the sake of arguing detection and the vehicle passing detection algorithm based on distance avoid infrared emission
The wrong identification and acceleration transducer that scheme is brought by people, tricycle and other objects bring by more vehicles according to lift
Bar number be identified as a vehicle by the problem of, improve the accuracy rate of vehicle count, be intelligent transportation in static traffic side
Case provides an a kind of vacant parking stall detection scheme of accurately parking；
The present invention can reach preferable promotion and application in all field energys of parking, and can accurately count an entrance of parking
Vehicle flowrate accurate reference is provided for vehicle flowrate guiding, to accurately provide the vacant parking stall quantity parked in field for intelligence
Static traffic that can be in traffic system parking stall quantity statistics of parking provide preferable solution.
Description of the drawings
Fig. 1 is that one kind provided by the invention is parked an entrance traffic flow detecting method flow diagram；
Fig. 2 is that one kind provided by the invention is parked an entrance vehicle flow detection system structural schematic diagram.
Specific implementation mode
As shown in Figure 1, parking an entrance vehicle flow detection algorithm the present invention provides one kind, detailed process is as follows：
Step 1：The ADC values of the range sensor acquired under initialization without car state after vehicle flow detection system starts, mirror
Existing during system electrification to interfere, vehicle flow detection system is taken secondary below upon actuation using the data of acquisition time ADC
Sampled data is calculated, and averagely obtains the average voltage under without car state, and by the work of current vehicle flow detection system
State is switched to without car state, and system is completed to enter dormant state after initialization；
Step 2：Vehicle flow detection system starts distance when receiving the electric signal that an entrance gate bar of parking lifts
Sensor carries out ADC samplings, and the data that sampling obtains are added in buffering area, while calculating the average voltage in buffering area
Value, if average voltage is higher than preset threshold value, to that may have the Count of Status variable of vehicle to add 1；
Step 3：If it is more than the threshold value of a counting that may continuously have the value of the Count of Status of vehicle, by vehicle Flow Detection
The working condition of system is switched to having car state, if the average voltage in intermediate detection to buffering area be less than with it is preset
The working condition of vehicle flow detection system is then switched to without car state by the sum of threshold value again, while will likely have the Count of Status of vehicle
Value resets to 0；
Step 4：If the average voltage of collected range sensor output voltage be less than with preset threshold value it
With, if current state be without car state, continue acquire range sensor output voltage values；If current state is to have vehicle shape
State, then to 1 may be added without the Count of Status variable of vehicle；
If continuously may the count value without the Count of Status variable of vehicle be more than threshold value, by the current of vehicle flow detection system
Working condition is switched to without car state by having car state；If under having car state, may the Count of Status variable without vehicle it is not super
Cross threshold value, and average voltage the sum of is higher than with preset threshold value, then will likely be set to 0 without the Count of Status variable of vehicle.
Step 5：Having car state is switched to by without car state in vehicle flow detection system and is switched to no vehicle from having car state again
Under conditions of state, the vehicle flow detection system by serial ports transparent transmission GPRS module by vehicle by status information be sent to
In cloud server.
An entrance vehicle flow detection system as shown in Fig. 2, one kind provided by the invention is parked includes mainly MCU processing
Device module, detection module of arguing for the sake of arguing, distance sensor module and serial ports transparent transmission GPRS module；
Detection module of arguing for the sake of arguing is for vehicle flow detection system and gate bar signal wire to be attached, the road at gate road junction
Electric signal is generated when bar is lifted or fallen to MCU processor, MCU processor is switched to after receiving electric signal from dormant state
Working condition, and adc data is acquired in real time；
Distance sensor module will be examined for detecting a certain range of physics with a distance from sensor by opto-electronic conversion
The range information measured is converted to information of voltage, and is input to MCU processor by adc data；
Serial ports transparent transmission GPRS module is used to MCU processor being sent to cloud by GPRS network by the data that serial ports is sent
In end data；
MCU processor module mainly runs vehicle passing detection algorithm, starts to acquire under the trigger condition for detection of arguing for the sake of arguing
Or stop the range information of acquisition range sensor acquisition, and the vehicle flowrate that will be detected by algorithm by vehicle therein
Information is sent to serial ports transparent transmission GPRS module by serial ports, serial ports transparent transmission GPRS module by vehicle flowrate data upload to it is specified after
In platform cloud server；
The ADC sampled values that detect under initialization without car state after vehicle flow detection system starts, in system operation,
Under bar lifting status, system starts ADC sampling processes, if vehicle is by that can cause ADC range sensors to acquire when arguing for the sake of arguing
ADC values occur variation, vehicle flow detection algorithm recognize vehicle by when to vehicle flowrate carry out count and by serial ports it is saturating
The dynamic change for uploading to cloud server and realizing vehicle flowrate will be counted by passing GPRS module.
In order to improve the accuracy of trafficability detection, the bar signal wire of arguing and fall at gate road junction is connected to vehicle
Flow quantity detecting system starts detection algorithm progress vehicle passing detection algorithm in the road bar lifting status at gate road junction and is examined
It surveys and counts and stop detection algorithm in road bar full state, to largely reduce module to objects such as people, tricycles
The error detection of body, improve vehicle by detection accuracy.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is every that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (5)
- An entrance traffic flow detecting method 1. one kind is parked, it is characterised in that：The method includes：(1) it acquires the adc data under without car state and carries out initialization using the data and calculate initial value；(2) when receiving the electric signal that an entrance gate bar of parking lifts, start ADC samplings and the data for obtaining sampling are added Into buffering area, while calculating the average voltage in buffering area；(3) the adc data value read by continuous sampling calculates the average value of adc data in buffering area, is judged as having car state Or without car state；(4) vehicle flow detection system by serial ports transparent transmission GPRS module by vehicle by status information be sent to cloud server In；Wherein, the step (1) includes being initialized after vehicle flow detection system starts, and acquires range sensor under without car state ADC values, sampling take time adc data to be calculated, averagely obtain the average voltage under without car state, and current vehicle flowrate is examined The working condition of examining system is switched to without car state, and system is completed to enter dormant state after initialization；The step (2) includes vehicle flow detection system when receiving the electric signal that an entrance gate bar of parking lifts, and is started Range sensor carries out ADC samplings, and the data that sampling obtains are added in buffering area, while calculating the voltage in buffering area Average value；If average voltage is higher than preset threshold value, to that may have the Count of Status variable of vehicle to add 1；The step (3) includes the adc data value that continuous sampling is read and the average value for calculating adc data in buffering area, if ADC The average value of data is more than that one fixed threshold value of ADC initial values under without car state continuously several times then switches current state To having car state, otherwise keep the current status unchanged；If the average value of adc data is less than the ADC initial values one under without car state Current state is continuously then switched to without car state by a fixed threshold value several times, is otherwise kept the current status unchanged.
- An entrance traffic flow detecting method 2. one kind according to claim 1 is parked, it is characterised in that：If continuously may It is more than the threshold value of a counting to have the value of the Count of Status of vehicle, then the working condition of vehicle flow detection system has been switched to vehicle shape State；If average voltage in intermediate detection to buffering area the sum of is less than with preset threshold value, by vehicle Flow Detection system The working condition of system is switched to without car state, while will likely have the Count of Status value of vehicle to reset to 0.
- An entrance traffic flow detecting method 3. one kind according to claim 1 is parked, it is characterised in that：If collected The average voltage of range sensor output voltage the sum of is less than with preset threshold value, and current state is without car state, then Continue the output voltage values of acquisition range sensor；If current state is having car state, to may become without the Count of Status of vehicle Amount plus 1；If continuously may the count value without the Count of Status variable of vehicle be more than threshold value, by the work at present of vehicle flow detection system State is switched to without car state by having car state；If under having car state, threshold may be not above without the Count of Status variable of vehicle Value, and average voltage the sum of is higher than with preset threshold value, then will likely be set to 0 without the Count of Status variable of vehicle.
- An entrance traffic flow detecting method 4. one kind according to claim 1 is parked, it is characterised in that：The step (4) it is included in vehicle flow detection system and the item that having car state is switched to without car state from having car state again is switched to by without car state Under part, the vehicle flow detection system by serial ports transparent transmission GPRS module by vehicle by status information be sent to cloud service In device.
- An entrance vehicle flowrate inspection 5. an one kind for entrance traffic flow detecting method according to claim 1 of parking is parked Examining system, it is characterised in that：The system comprises MCU processor module, detection module of arguing for the sake of arguing, distance sensor module and serial ports Transparent transmission GPRS module；The detection module of arguing for the sake of arguing is for vehicle flow detection system and gate bar signal wire to be attached；It is described argue for the sake of arguing detection module for detect gate bar lift and fall generate electric signal be input in MCU processor module；The distance sensor module is converted for detecting a certain range of physics with a distance from sensor, and by range information It is input in the ADC units of MCU processor module for information of voltage；The MCU processor module is used to start or stop the sampling to ADC according to the information of gate road bar input, and passes through Vehicle that vehicle passing detection algorithm is identified by and by by information of vehicles finger is sent to by serial ports transparent transmission GPRS module In fixed cloud server.
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| CN201510974311.2A CN105427627B (en) | 2015-12-22 | 2015-12-22 | One kind is parked entrance traffic flow detecting method and its a system |
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| CN105427627B true CN105427627B (en) | 2018-09-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106781671A (en) * | 2017-01-06 | 2017-05-31 | 武汉键停科技有限公司 | It is a kind of to be based on two kinds of parking space state detection methods of sensor cross checking |
| CN107403474A (en) * | 2017-07-26 | 2017-11-28 | 广东兴达顺科技有限公司 | One kind charge processing method and smart machine |
| CN111899551B (en) * | 2020-06-16 | 2021-09-17 | 广州文远知行科技有限公司 | Method, apparatus, computer device and storage medium for determining parking spot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694746A (en) * | 2009-10-19 | 2010-04-14 | 浙江大学 | Magnetic resistant vehicle quantity and speed detecting node based on Zigbee wireless protocol and use methods thereof |
| CN104361765A (en) * | 2014-11-24 | 2015-02-18 | 天津理工大学 | Parking space detecting system based on magnetoresistive sensor and ZigBee |
| CN204680217U (en) * | 2015-05-29 | 2015-09-30 | 浙江利尔达物联网技术有限公司 | A kind of parking stall indication mechanism for parking lot |
| CN105113438A (en) * | 2015-07-28 | 2015-12-02 | 苏州玄禾物联网科技有限公司 | Image processing based gate machine control device of parking place |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000182187A (en) * | 1998-12-16 | 2000-06-30 | Nagoya Electric Works Co Ltd | Method and device for measuring parking situation |
| CN1291238C (en) * | 2002-08-16 | 2006-12-20 | 中国科学院上海微系统与信息技术研究所 | Radar radio-frequency device for monitoring vehicle flow rate in intelligent traffic system and its determination method |
-
2015
- 2015-12-22 CN CN201510974311.2A patent/CN105427627B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694746A (en) * | 2009-10-19 | 2010-04-14 | 浙江大学 | Magnetic resistant vehicle quantity and speed detecting node based on Zigbee wireless protocol and use methods thereof |
| CN104361765A (en) * | 2014-11-24 | 2015-02-18 | 天津理工大学 | Parking space detecting system based on magnetoresistive sensor and ZigBee |
| CN204680217U (en) * | 2015-05-29 | 2015-09-30 | 浙江利尔达物联网技术有限公司 | A kind of parking stall indication mechanism for parking lot |
| CN105113438A (en) * | 2015-07-28 | 2015-12-02 | 苏州玄禾物联网科技有限公司 | Image processing based gate machine control device of parking place |
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Address after: Building 10, phase I, airport economic and Technological Development Zone, Zhangjiakou City, Hebei Province Patentee after: Smart intercommunication Technology Co.,Ltd. Address before: Building 10, phase I, airport economic and Technological Development Zone, Zhangjiakou City, Hebei Province Patentee before: INTELLIGENT INTERCONNECTION TECHNOLOGIES Co.,Ltd. |