CN107507427A - A kind of TDMA wireless geomagnetisms wagon detector - Google Patents

A kind of TDMA wireless geomagnetisms wagon detector Download PDF

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Publication number
CN107507427A
CN107507427A CN201710948858.4A CN201710948858A CN107507427A CN 107507427 A CN107507427 A CN 107507427A CN 201710948858 A CN201710948858 A CN 201710948858A CN 107507427 A CN107507427 A CN 107507427A
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CN
China
Prior art keywords
microprocessor
module
tdma
geomagnetisms
signal
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710948858.4A
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Chinese (zh)
Inventor
边子媛
周长参
郝建
陈顺民
高晶
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Shandong Natop Electronic Technology Co Ltd
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Shandong Natop Electronic Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Shandong Natop Electronic Technology Co Ltd filed Critical Shandong Natop Electronic Technology Co Ltd
Priority to CN201710948858.4A priority Critical patent/CN107507427A/en
Publication of CN107507427A publication Critical patent/CN107507427A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The present invention relates to collecting vehicle information technical field, more particularly to a kind of TDMA wireless geomagnetisms wagon detector.The present invention includes earth magnetism sensing module, microprocessor, TDMA transmit/receive modules and Voltage stabilizing module, and the earth magnetism sensing module is used to obtain terrestrial magnetic disturbance signal during vehicle pass-through, and the terrestrial magnetic disturbance signal is sent to microprocessor；Microprocessor uses multi-hop Time synchronization algorithm, for receiving the terrestrial magnetic disturbance signal from the earth magnetism sensing module, two-way communication link between microprocessor and the TDMA transmit/receive module；TDMA transmit/receive modules are used to be communicated with external equipment；Voltage stabilizing module is used to power for earth magnetism sensing module, microprocessor, TDMA transmit/receive modules, the model MSP430G2553 of the microprocessor, greatly reduces the power consumption of the present invention, improves the stability and accuracy of the present invention.The strong antijamming capability of the present invention, cost is cheap, simple in construction, measurement result is accurate.

Description

A kind of TDMA wireless geomagnetisms wagon detector
Technical field
The present invention relates to collecting vehicle information technical field, more particularly to a kind of TDMA wireless geomagnetisms wagon detector.
Background technology
In intelligent transportation system, transport information is most crucial content, and the various functions of whole system carry out and application All traffic administration is realized from simple static to intelligence down tightly around transport information, collection, application, the processing of transport information Dynamic change, main source of the wagon detector as transport information in intelligent transportation system, is Urban Traffic Planning and friendship The important foundation of siphunculus reason, can obtain current transport information in real time.
But increase for vehicle fleet size in current urban transportation, traditional wagon detector can not meet need Will, traditional wagon detector antijamming capability is weaker, and its is easily influenceed by environment, causes measurement result inaccurate.
The content of the invention
The present invention is in order to overcome the above-mentioned deficiencies of the prior art, there is provided a kind of strong antijamming capability, cost are cheap, structure Simple TDMA wireless geomagnetism wagon detectors.
Solves the problems, such as techniques discussed above, the technical scheme that the present invention takes is：
A kind of TDMA wireless geomagnetisms wagon detector include earth magnetism sensing module, microprocessor, TDMA transmit/receive modules and Voltage stabilizing module, wherein,
Earth magnetism sensing module, terrestrial magnetic disturbance signal during for obtaining vehicle pass-through, and by the terrestrial magnetic disturbance signal send to Microprocessor；
Microprocessor, it uses multi-hop Time synchronization algorithm, for receiving the terrestrial magnetic disturbance letter from the earth magnetism sensing module Number, two-way communication link between microprocessor and the TDMA transmit/receive module；
TDMA transmit/receive modules, for being communicated with external equipment；
Voltage stabilizing module, for being powered for earth magnetism sensing module, microprocessor, TDMA transmit/receive modules.
Preferably, the earth magnetism sensing module includes signal condition unit and magnetic resistance perceives electric bridge unit, the magnetic resistance sense Know terrestrial magnetic disturbance signal when electric bridge unit is used to obtain vehicle pass-through, and the terrestrial magnetic disturbance signal is sent to signal condition Unit, the signal condition unit include filter amplification circuit, and the filter amplification circuit is carried out to the terrestrial magnetic disturbance signal Filter and amplification is operated, and the terrestrial magnetic disturbance signal after filter and amplification is sent to microprocessor.
Preferably, the wireless geomagnetism wagon detector also includes keyboard input module, communication module, memory module, shape State display module, the signal input part of the signal output part connection microprocessor of the keyboard input module, the letter of microprocessor The signal input part of number output end connection status display module, communication module, the memory module two-way between microprocessor Letter connection, the communication module are connected with terminal device.
Preferably, the model MSP430G2553 of the microprocessor.
Preferably, the TDMA transmit/receive modules include receiver, transmitter, sequence controller and baseband block, institute Two-way communication link between receiver and microprocessor is stated, the signal output part of receiver connects the signal input part of transmitter, Signal input part of two signal output parts of the sequence controller respectively with receiver, transmitter is connected, sequence controller The two-way communication link between baseband block.
It is further preferred that the sequence controller is independently of the baseband block.
It is further preferred that the sequence controller is programmed from outside.
It is further preferred that the receiver, transmitter, sequence controller are integrated on same pcb board.
It is further preferred that communicated string by RS232 communication serial ports, RS485 between the microprocessor and communication module Mouth is connected.
It is further preferred that the memory module is FLASH memory and SD card memory.
Beneficial effects of the present invention are：
（1）, the present invention include earth magnetism sensing module, microprocessor, TDMA transmit/receive modules and Voltage stabilizing module, earth magnetism biography Feel module and perceive electric bridge unit including signal condition unit and magnetic resistance, substantially increase the ability of the collection signal of the present invention and resist Interference performance, the model MSP430G2553 of the microprocessor, the power consumption of the present invention is greatly reduced, improves the present invention Stability and accuracy, therefore the present invention strong antijamming capability, cost is cheap, simple in construction, measurement result is accurate.
（2）, the wireless geomagnetism wagon detector also includes keyboard input module, communication module, memory module, state and shows Show module, thus the present invention it is powerful, realize interactive mode.
（3）, the TDMA transmit/receive modules include receiver, transmitter, sequence controller and baseband block, significantly The reliability that the present invention communicates is improved, it is low in energy consumption, complete vehicle detecting information and be wirelessly transferred, and wireless transmission distance Far, transmission speed is fast.
Brief description of the drawings
The content of every width accompanying drawing expression in description of the invention and the mark in figure are briefly described below：
Fig. 1 is the structured flowchart of one embodiment of the TDMA wireless geomagnetism wagon detectors of the present invention；
Fig. 2 is the structured flowchart of another embodiment of the TDMA wireless geomagnetism wagon detectors of the present invention.
Mark in above-mentioned figure is：10th, earth magnetism sensing module；11st, signal condition unit；12nd, magnetic resistance perceives electric bridge list Member；20th, microprocessor；30th, TDMA transmit/receive modules；31st, receiver；32nd, transmitter；33rd, sequence controller；34th, base band Block；40th, Voltage stabilizing module；50th, keyboard input module；60th, communication module；70th, memory module；80th, state display module.
Embodiment
Below against accompanying drawing, the shape of each component for example involved to the embodiment of the present invention, construction, each several part Between mutual alignment and annexation, the effect of each several part and operation principle etc. is described in further detail：
As shown in figure 1, a kind of TDMA wireless geomagnetisms wagon detector includes earth magnetism sensing module 10, microprocessor 20, TDMA hairs / receiving module 30 and Voltage stabilizing module 40 are penetrated, the earth magnetism sensing module 10 is used to obtain terrestrial magnetic disturbance letter during vehicle pass-through Number, and the terrestrial magnetic disturbance signal is sent to microprocessor 20；Microprocessor 20 uses multi-hop Time synchronization algorithm, for connecing Receive the terrestrial magnetic disturbance signal from the earth magnetism sensing module 10, the microprocessor 20 and TDMA transmit/receive modules 30 it Between two-way communication link；TDMA transmit/receive modules 30 are used to be communicated with external equipment；It is earth magnetism that Voltage stabilizing module 40, which is used for, Sensing module 10, microprocessor 20, TDMA transmit/receive modules 30 are powered.
Voltage stabilizing module 40 includes voltage stabilizing chip, the model LM25965 of real-time voltage stabilizing chip.
The earth magnetism sensing module 10 includes signal condition unit 11 and magnetic resistance perceives electric bridge unit 12, and the magnetic resistance perceives Electric bridge unit 12 is used to obtain terrestrial magnetic disturbance signal during vehicle pass-through, and the terrestrial magnetic disturbance signal is sent to signal condition Unit 11, the signal condition unit 11 include filter amplification circuit, and the filter amplification circuit is to the terrestrial magnetic disturbance signal Amplifieroperation is filtered, and the terrestrial magnetic disturbance signal after filter and amplification is sent to microprocessor 20.
As shown in Fig. 2 the wireless geomagnetism wagon detector also includes keyboard input module 50, communication module 60, storage Module 70, state display module 80, the signal input of the signal output part connection microprocessor 20 of the keyboard input module 50 End, the signal input part of the signal output part connection status display module 80 of microprocessor 20, communication module 60, memory module 70 The two-way communication link between microprocessor 20, the communication module 60 are connected with terminal device.
The communication module 60 is connected using WIFI communication patterns with terminal device, and communication module 60 is gsm communication device, Terminal device is mobile phone or computer.
State display module 80 uses LCD display.
Model MSP430G2553, the MSP430G2553 chip of the microprocessor 20 has 60KB FLASH, 2KB RAM, communication interface supports the abundant interface resource such as SPI, IIC, USART, meets the needs of more detection node data fusions.
The TDMA transmit/receive modules 30 include receiver 31, transmitter 32, sequence controller 33 and baseband block 34, two-way communication link between the receiver 31 and microprocessor 20, the signal output part connection transmitter 32 of receiver 31 Signal input part, two signal output parts of the sequence controller 33 are defeated with the signal of receiver 31, transmitter 32 respectively Enter end to be connected, two-way communication link between sequence controller 33 and baseband block 34.
The sequence controller 33 is independently of the baseband block 34；The sequence controller 33 is programmed from outside；Institute Receiver 31, transmitter 32, sequence controller 33 is stated to be integrated on same pcb board；The microprocessor 20 and communication module 60 Between be connected by RS232 communication serial ports, RS485 communication serial ports；The memory module 70 is that FLASH memory and SD card are deposited Reservoir.
In the use of the present invention, magnetic resistance perceives terrestrial magnetic disturbance signal when electric bridge unit 12 obtains vehicle pass-through in real time, and The terrestrial magnetic disturbance signal is sent to signal condition unit 11, the filter amplification circuit pair inside the signal condition unit 11 The terrestrial magnetic disturbance signal is filtered amplifieroperation, and the terrestrial magnetic disturbance signal after filter and amplification is sent to microprocessor 20, microprocessor 20 manages and coordinates the work of modules, and microprocessor 20 uses the magnetic perturbation over the ground of multi-hop Time synchronization algorithm After dynamic signal is handled, the terrestrial magnetic disturbance signal after processing is sent to TDMA transmit/receive modules 30, TDMA launches/connect Receive module 30 and transmit a signal to external equipment, such as repeater.Meanwhile user is led to by the input instruction of keyboard input module 50 Believe that module 60 is realized and computer or mobile communication, the work shape of the real-time display wireless geomagnetism wagon detector of state display module 80 State.
Being fitted to each other between modules so that strong antijamming capability of the invention, cost be cheap, it is simple in construction, survey It is accurate to measure result.

Claims (10)

  1. A kind of 1. TDMA wireless geomagnetisms wagon detector, it is characterised in that：Including earth magnetism sensing module（10）, microprocessor （20）, TDMA transmit/receive modules（30）And Voltage stabilizing module（40）, wherein,
    Earth magnetism sensing module（10）, terrestrial magnetic disturbance signal during for obtaining vehicle pass-through, and the terrestrial magnetic disturbance signal is sent out Deliver to microprocessor（20）；
    Microprocessor（20）, it uses multi-hop Time synchronization algorithm, and the earth magnetism sensing module is come from for receiving（10）Ground Magnetic disturbance signal, the microprocessor（20）With TDMA transmit/receive modules（30）Between two-way communication link；
    TDMA transmit/receive modules（30）, for being communicated with external equipment；
    Voltage stabilizing module（40）, for for earth magnetism sensing module（10）, microprocessor（20）, TDMA transmit/receive modules（30）For Electricity.
  2. A kind of 2. TDMA wireless geomagnetisms wagon detector as claimed in claim 1, it is characterised in that：The earth magnetism sensing module （10）Including signal condition unit（11）Electric bridge unit is perceived with magnetic resistance（12）, the magnetic resistance perception electric bridge unit（12）For obtaining Terrestrial magnetic disturbance signal during vehicle pass-through is taken, and the terrestrial magnetic disturbance signal is sent to signal condition unit（11）, the letter Number conditioning unit（11）Including filter amplification circuit, the filter amplification circuit is filtered amplification to the terrestrial magnetic disturbance signal Operation, and the terrestrial magnetic disturbance signal after filter and amplification is sent to microprocessor（20）.
  3. A kind of 3. TDMA wireless geomagnetisms wagon detector as claimed in claim 2, it is characterised in that：The wireless geomagnetism vehicle Detector also includes keyboard input module（50）, communication module（60）, memory module（70）, state display module（80）, it is described Keyboard input module（50）Signal output part connection microprocessor（20）Signal input part, microprocessor（20）Signal it is defeated Go out to hold connection status display module（80）Signal input part, communication module（60）, memory module（70）And microprocessor （20）Between two-way communication link, the communication module（60）It is connected with terminal device.
  4. A kind of 4. TDMA wireless geomagnetisms wagon detector as described in any one of claims 1 to 3, it is characterised in that：It is described micro- Processor（20）Model MSP430G2553.
  5. A kind of 5. TDMA wireless geomagnetisms wagon detector as claimed in claim 4, it is characterised in that：The TDMA launches/connect Receive module（30）Including receiver（31）, transmitter（32）, sequence controller（33）And baseband block（34）, the receiver （31）With microprocessor（20）Between two-way communication link, receiver（31）Signal output part connection transmitter（32）Signal Input, the sequence controller（33）Two signal output parts respectively with receiver（31）, transmitter（32）Signal it is defeated Enter end to be connected, sequence controller（33）With baseband block（34）Between two-way communication link.
  6. A kind of 6. TDMA wireless geomagnetisms wagon detector as claimed in claim 5, it is characterised in that：The sequence controller （33）Independently of the baseband block（34）.
  7. A kind of 7. TDMA wireless geomagnetisms wagon detector as claimed in claim 6, it is characterised in that：The sequence controller （33）It is programmed from outside.
  8. A kind of 8. TDMA wireless geomagnetisms wagon detector as claimed in claim 7, it is characterised in that：The receiver（31）、 Transmitter（32）, sequence controller（33）It is integrated on same pcb board.
  9. A kind of 9. TDMA wireless geomagnetisms wagon detector as claimed in claim 8, it is characterised in that：The microprocessor（20） With communication module（60）Between be connected by RS232 communication serial ports, RS485 communication serial ports.
  10. A kind of 10. TDMA wireless geomagnetisms wagon detector as claimed in claim 9, it is characterised in that：The memory module （70）For FLASH memory and SD card memory.
CN201710948858.4A 2017-10-12 2017-10-12 A kind of TDMA wireless geomagnetisms wagon detector Pending CN107507427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710948858.4A CN107507427A (en) 2017-10-12 2017-10-12 A kind of TDMA wireless geomagnetisms wagon detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710948858.4A CN107507427A (en) 2017-10-12 2017-10-12 A kind of TDMA wireless geomagnetisms wagon detector

Publications (1)

Publication Number Publication Date
CN107507427A true CN107507427A (en) 2017-12-22

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CN201710948858.4A Pending CN107507427A (en) 2017-10-12 2017-10-12 A kind of TDMA wireless geomagnetisms wagon detector

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1446407A (en) * 2000-08-01 2003-10-01 西门子公司 TDMA transmitting/receiving unit
CN101110161A (en) * 2007-08-31 2008-01-23 北京科技大学 System for automatic cab model recognition and automatic vehicle flowrate detection and method thereof
US20140118180A1 (en) * 2007-12-05 2014-05-01 Sensys Networks, Inc. Apparatus and Method Using Radar in the Ground to Detect and/or Count Bicycles
CN104332056A (en) * 2014-07-04 2015-02-04 成都天奥测控技术有限公司 Wireless vehicle detection device and detection method thereof
CN104900067A (en) * 2015-05-28 2015-09-09 贺杰 Intelligent wireless vehicle detection system based on geomagnetic sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1446407A (en) * 2000-08-01 2003-10-01 西门子公司 TDMA transmitting/receiving unit
CN101110161A (en) * 2007-08-31 2008-01-23 北京科技大学 System for automatic cab model recognition and automatic vehicle flowrate detection and method thereof
US20140118180A1 (en) * 2007-12-05 2014-05-01 Sensys Networks, Inc. Apparatus and Method Using Radar in the Ground to Detect and/or Count Bicycles
CN104332056A (en) * 2014-07-04 2015-02-04 成都天奥测控技术有限公司 Wireless vehicle detection device and detection method thereof
CN104900067A (en) * 2015-05-28 2015-09-09 贺杰 Intelligent wireless vehicle detection system based on geomagnetic sensor

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