CN106681226A - Data acquisition unit of traffic meteorological station - Google Patents
Data acquisition unit of traffic meteorological station Download PDFInfo
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- CN106681226A CN106681226A CN201710072503.3A CN201710072503A CN106681226A CN 106681226 A CN106681226 A CN 106681226A CN 201710072503 A CN201710072503 A CN 201710072503A CN 106681226 A CN106681226 A CN 106681226A
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- data acquisition
- acquisition unit
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- traffic
- signal
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- 238000004891 communication Methods 0.000 claims abstract description 23
- 238000013461 design Methods 0.000 claims description 14
- 230000004224 protection Effects 0.000 claims description 9
- 238000013500 data storage Methods 0.000 claims description 3
- 230000005055 memory storage Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 9
- 230000006399 behavior Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 230000008054 signal transmission Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000069 prophylactic effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/02—Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a data acquisition unit of a traffic meteorological station. The data acquisition unit of the traffic meteorological station consists of a high-performance processor module, an external data memory, a multi-channel data communicator, a high-precision analog signal acquirer, a high-precision digital signal acquirer, a power circuit, a high-precision clock circuit, an EMC protecting circuit and the like. The data acquisition unit of the traffic meteorological station supports data acquisition and processing of various meteorological factors, and the data are processed, stored and transmitted according to a uniform standard. A 32-bit ARM is combined to a CPLD to obtain a main control processor; by serial communication extension and analog channel gating, the data acquisition unit can acquire data of various temperature and humidity sensors and digital intelligent sensors, GPRS communication transmission of signals is realized through a GPRS transmitting and receiving module, and a reliable solution is provide for measurement and early warning of pavement behaviors, visibility, crosswind, rainfall, pavement high temperature and low temperature of road traffic.
Description
Technical field
The invention belongs to traffic weather monitoring field, and in particular to a kind of traffic weather station data acquisition instrument.
Background technology
The trip that the fast development of road traffic gives people brings convenient, fast, but various unforeseen danger
Pavement behavior, for example, rain, the road surface slippery situation that accumulated snow, icings etc. cause and beam wind, mist etc. rolled into a ball, to the car run at high speed on road
Many potential safety hazards are buried, be one of the key factor for causing vehicle accident.
Go off daily of the traffic weather information data to people has very important effect, existing traffic weather data
In certainty of measurement not enough, reliability is low, and the accurate measurement to environmental factorss is impacted for harvester.
The content of the invention
To overcome, the certainty of measurement of prior art is inadequate, the low deficiency of reliability, and the present invention proposes a kind of traffic weather station
Data acquisition unit.
The technical solution adopted for the present invention to solve the technical problems is：A kind of traffic weather station data acquisition unit, it is special
Levy and be：A kind of traffic weather station data acquisition unit, by high performance processor module, external data storage, multi-channel data
Communication, high-precision collection of simulant signal, high-precision digital signal acquiring, power circuit, high precision clock circuit and EMC are protected
Protection circuit etc. is constituted, and supports the data acquisition and processing (DAP) of each meteorological element, is processed, stores, is transmitted by unified specification, is had
There are small volume, integrated level height, Micro Energy Lose, high reliability.
Preferably, the high performance processor module is made up of 24 arm processors and CPLD, include SDRAM,
The internal mass memory storages such as NandFlash, DataFlash and outer watchdog circuit, arm processor is using high performance
Uc/os-ii real time operating systems, realize the timely collection to meteorologic parameter data with transmission；CPLD is mainly responsible for completing
The collection of the digital quantities such as wind speed, wind direction, the water yield, door trip.
Preferably, the high-precision collection of simulant signal includes adopting for the analogue signals such as humiture, internal supply voltage
Collection, using Design of Compatibility, same port can support that 4 line PT100 signals are accessed, it is also possible to support the voltage of (0-2.5) V
Signal is accessed, and uses multichannel analog switching gate, 24 A/D acquisition chip acquisition times, using plastic packaging metal foil resistor as
Measuring resistance carries out adaptive calibration to temperature value, eliminates the temperature drift of variation of ambient temperature and affects, and greatly improves certainty of measurement.
Preferably, the high-precision digital signal acquiring includes the digital signals such as rainfall, wind speed, door trip, wind direction
Collection, the wherein signal such as rainfall, wind speed, door trip need to first pass through the schmidt trigger phase inverter of low-power consumption, enhancing signal it is anti-
Interference performance；Wind direction is gray code signal, through 8 system general line system chips, line number is entered in CPLD by 8 bit address buses
According to collection.
Preferably, multi-channel data communication, includes 7 road serial communications, for terminal, GPRS and intelligent sensing
Communication between device, wherein 3 road serial communication interfaces are provided by arm processor, remaining is provided by serial port extended chip, in addition also
Reserved 1 tunnel CAN communication, the communication of 1 road network and 2 road usb communications, meet debugging, application and the maintenance needs of product.
Preferably, the EMC of EMC protections and power end that the EMC protection circuitry is divided into signal end protects two parts, wherein
Gas-discharge tube is added to be grounded at the external interface of signal end, while little valued resistor of connecting, the TVS bis- of another termination 600W power
Pole pipe；Gas-discharge tube is added to be grounded at the external interface of power end, while inline fuse, inductance, then connect 1500W power
TVS diode, through the protection of these circuit components, can effectively suppress impact of the external disturbance to internal circuit.
Preferably, traffic weather station data acquisition unit is communicated by terminal or GPRS, and data are uploaded, also can be from SD
The external memory storage such as card and CF cards reads data；
Preferably, the design of the high precision clock circuit, meets the date and time to observation station and is accurately arranged
With the demand of calibration.
Present invention beneficial effect compared with prior art：
1) high-precision analogue signal acquisition circuit, with multiway analog switch gate, can timesharing carry out multichannel analog signals
Collection；Measuring resistance is done with plastic packaging metal foil resistor, adaptive calibration is carried out to temperature value, greatly improve certainty of measurement.
2) high-precision digital signal acquiring, by the schmidt trigger phase inverter of low-power consumption, enhancing signal it is anti-interference
Ability, improves the reliability of measurement.
3) design of EMC protection circuitry, strengthens the capacity of resisting disturbance of product, improves the reliability of product.
Description of the drawings：
Fig. 1 is data acquisition unit hardware designs theory diagram in the present invention；
Fig. 2 is collection of simulant signal theory diagram in the present invention.
Specific embodiment：
As shown in figure 1, data acquisition unit hardware includes the processor that 32 ARM and CPLD constitute, data storage circuitry, logical
Letter circuit, analogue signal acquisition circuit, digital acquisition circuit, power circuit etc..The ARM of 32 is from atmel corp
AT91SAM9263B, extends out the internal storages such as SDRAM, NANDFLASH, DATAFLASH；Two kinds of outsides of design CF cards and SD card
Storage mode, is easy to products application and maintenance；Design reset circuit and watchdog circuit, can manually carry out initial reset,
Energy prophylactic procedures are run and are flown；Design serial expanded circuit, increases serial communication passage, can use collection multi-path digital intelligence sensor,
The communications of data are realized with terminal or GPRS；Design USB, Ethernet, CAN communication interface, are easy to the expanded application of client
And maintenance；Design simulation signal acquisition circuit, by multi-channel analog gating switch, can measure simultaneously multichannel Temperature Humidity Sensor,
The analogue signals such as internal power source voltage, the signal of collection sends into arm processor in the way of SPI communication；Design digital collection electricity
Road, by digital quantity signals such as phase inverter and general line system chip, collection wind direction, wind speed, rainfall, door trip；Design high accuracy
Clock circuit, meets the demand that the date and time to observation station is accurately arranged and calibrated；Design point indicator light circuit,
Can Real Time Observation data acquisition unit working condition；Design high efficiency, the DC-DC power source circuit of low ripple, there is provided needed for instrument
Each road supply voltage.
As shown in Fig. 2 from low noise, the 24 high-precision As/D acquisition chips of low-power consumption, being carried out in SPI communication mode
Data transfer；Outside Temperature Humidity Sensor and internal temperature transducer are at most capable of achieving through 4 multichannel analog switching gates
The timesharing measurement of 16 sensors, the output of 4 analog switches connects respectively A/D collection cores with the mode of connection of 4 line PT100
The analog input end of piece；The reference voltage of A/D acquisition chips adopts outside reference source, improves certainty of measurement；Internal power source voltage
Collection, through 18 tunnels analogy switch, the output of analog switch is linked into A/D acquisition chips in the way of Differential Input
Analog input end, finally realizes the high precision collecting of analogue signal.
The preferred embodiment of innovation and creation is the foregoing is only, it is all at this not to limit the invention
Any modification, equivalent and improvement made within the spirit and principle of bright creation etc., should be included in the invention
Within protection domain.
Claims (6)
1. a kind of traffic weather station data acquisition unit, it is characterised in that：By high performance processor module, external data storage,
Multi-channel data communication, high-precision collection of simulant signal, high-precision digital signal acquiring, power circuit, high precision clock
Circuit and EMC protection circuitry etc. are constituted.
2. a kind of traffic weather station data acquisition unit according to claim 1, it is characterised in that：High performance processor die
Block is made up of 24 arm processors and CPLD, including SDRAM, NandFlash, DataFlash etc. internal mass memory storage and
Outer watchdog circuit, arm processor is high performance uc/os-ii real time operating systems.
3. a kind of traffic weather station data acquisition unit according to claim 1, it is characterised in that：Multi-channel data communication bag
7 road serial communications are included, wherein 3 road serial communication interfaces are provided by arm processor, remaining 4 route serial port extended chip is provided,
Multi-channel data communication also includes 1 tunnel CAN communication, the communication of 1 road network and 2 road usb communications.
4. a kind of traffic weather station data acquisition unit according to claim 1, it is characterised in that：High-precision digital signal
Collection includes rainfall, wind speed, door trip, the collection of wind direction digital signal, and wind direction is gray code signal, turns through 8 system buses
Chip is changed, data acquisition is carried out in CPLD by 8 bit address buses.
5. a kind of traffic weather station data acquisition unit according to claim 1, it is characterised in that：High-precision analogue signal
Collection includes the collection of the analogue signals such as humiture, internal supply voltage, and using Design of Compatibility, same port can support 4
Line PT100 signals are accessed, it is also possible to which the voltage signal for supporting (0-2.5) V is accessed, and use multichannel analog switching gate, 24
A/D acquisition chip acquisition times.
6. a kind of traffic weather station data acquisition unit according to claim 1, it is characterised in that：EMC protection circuitry is divided into
The EMC protections of signal end and the EMC of power end protect two parts, wherein add gas-discharge tube to connect at the external interface of signal end
Ground, while little valued resistor of connecting, the TVS diode of another termination 600W power；Gas is added to put at the external interface of power end
Fulgurite is grounded, while inline fuse, inductance, then the TVS diode for connecing 1500W power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710072503.3A CN106681226A (en) | 2017-01-23 | 2017-01-23 | Data acquisition unit of traffic meteorological station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710072503.3A CN106681226A (en) | 2017-01-23 | 2017-01-23 | Data acquisition unit of traffic meteorological station |
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| Publication Number | Publication Date |
|---|---|
| CN106681226A true CN106681226A (en) | 2017-05-17 |
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| CN201710072503.3A Pending CN106681226A (en) | 2017-01-23 | 2017-01-23 | Data acquisition unit of traffic meteorological station |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002262364A (en) * | 2001-03-01 | 2002-09-13 | Kaijo Corp | Observation data collecting system |
| US8314730B1 (en) * | 2010-12-14 | 2012-11-20 | The Boeing Company | Collection of meteorological data by vehicles |
| EP2650701A2 (en) * | 2012-04-11 | 2013-10-16 | Cube Engineering GmbH | System and method for measuring and storing meteorological data |
| CN204706176U (en) * | 2015-04-24 | 2015-10-14 | 天津市尚通科技有限公司 | Multi-functional data collector |
| CN105445818A (en) * | 2016-01-25 | 2016-03-30 | 南京信息工程大学 | Automatic meteorological station data acquisition device checking system and checking method thereof |
| CN105487139A (en) * | 2016-01-25 | 2016-04-13 | 南京信息工程大学 | High-precision multichannel air pressure detecting instrument for automatic weather station |
-
2017
- 2017-01-23 CN CN201710072503.3A patent/CN106681226A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002262364A (en) * | 2001-03-01 | 2002-09-13 | Kaijo Corp | Observation data collecting system |
| US8314730B1 (en) * | 2010-12-14 | 2012-11-20 | The Boeing Company | Collection of meteorological data by vehicles |
| EP2650701A2 (en) * | 2012-04-11 | 2013-10-16 | Cube Engineering GmbH | System and method for measuring and storing meteorological data |
| CN204706176U (en) * | 2015-04-24 | 2015-10-14 | 天津市尚通科技有限公司 | Multi-functional data collector |
| CN105445818A (en) * | 2016-01-25 | 2016-03-30 | 南京信息工程大学 | Automatic meteorological station data acquisition device checking system and checking method thereof |
| CN105487139A (en) * | 2016-01-25 | 2016-04-13 | 南京信息工程大学 | High-precision multichannel air pressure detecting instrument for automatic weather station |
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Application publication date: 20170517 |