CN104900069B - A kind of application process of micro energy lose magnetic signal detection device - Google Patents
A kind of application process of micro energy lose magnetic signal detection device Download PDFInfo
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- CN104900069B CN104900069B CN201510352374.4A CN201510352374A CN104900069B CN 104900069 B CN104900069 B CN 104900069B CN 201510352374 A CN201510352374 A CN 201510352374A CN 104900069 B CN104900069 B CN 104900069B
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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
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Abstract
A kind of micro energy lose magnetic signal detection device, including magnet sensor arrangement, power supply, its power supply respectively with MCU micro-control units, Ad chips, low-watt consumption magnetic sensor is connected, low-watt consumption magnetic sensor, Ad chips, MCU micro-control units, it is sequentially connected, MCU micro-control units, RS232 equipment, host computer is sequentially connected, MCU micro-control units connect sd storage cards, magnet sensor arrangement by magnetic signal in being converted to electric signal, and it is transferred to signal supervisory instrument, the electric signal is converted to data signal by signal supervisory instrument, preserve data signal, detect the data signal, by software algorithm, export testing result, improve accuracy of detection, small volume, installation is simple, reduce difficulty of construction, reduce cost.
Description
Technical field
The invention belongs to magnetic field detection technology field, and in particular to a kind of micro energy lose magnetic signal detection device and its application side
Method.
Background technology
With the rapid development increased with traffic of vehicle, to the demand of transport information in control of traffic and road and control
It is more and more, the collection of transport information is realized by annular wagon detector, annular wagon detector is to pass through Coil Detector
Realize, the Road base segment in same track buries one group（2）Induction coil, every group of induction coil are examined with multichannel vehicle
Device is surveyed to be connected.When vehicle passes through two coils respectively, due to the change of winding inductance quantity, vehicle will be detected by state
Arrive, while status signal transmission is acquired by it and calculated to wagon detector.But since it is desired that buried under every track
If coil, so having destruction to the road surface of highway, pavement life is influenceed；After long-term use, coil is easily by heavy vehicle, road
The damage such as is repaired in face, and workload is larger during more emat coil, and need to close track when constructing, and influences traffic；The increasing of feed line length
Add, feeding line portion inductive proportions can be caused to increase, relative to the change ratio of winding inductance quantity with regard to smaller, had to accuracy of detection
Influence.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, it is an object of the invention to provide a kind of micro energy lose magnetic signal detection device
And its application process, by the application of magnet sensor arrangement and signal supervisory instrument hardware and software, it is accurate to realize magnetic signal
Detection, there is the characteristics of reliability is high, easy for installation, the working time is long.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of micro energy lose magnetic signal detection device, including magnet sensor arrangement, power supply, its power supply respectively with MCU microcontrollers
Unit, Ad chips, low-watt consumption magnetic sensor are connected, and low-watt consumption magnetic sensor, Ad chips, MCU micro-control units are sequentially connected,
MCU micro-control units, RS232 equipment, host computer are sequentially connected, MCU micro-control units connection sd storage cards；
The magnet sensor arrangement is used to magnetic signal being converted to electric signal, and is transferred to Ad chips 4；
The Ad chips are used to the electric signal be converted to data signal.
The Ad chips use ads1220 acquisition chips.
Described MCU micro-control units use stm32f051r8t6 controllers.
Described sd storage cards are using sudden strain of a muscle enlightening 2gSD.
A kind of application process of micro energy lose magnetic signal detection device, comprises the following steps：
1）After upper electricity, system initialization, timer initialization and timing；
2）In 40s, whether MCU micro-control units receive the reading and writing of host computer transmission, wipe one in three kinds of status commands
Kind status command, if so, then according to order, one state of sd storage cards is changed in three kinds of corresponding reading and writing, wiping states
Kind state；
3）In 40s, whether MCU micro-control units receive the order of the reading sd storage card states of host computer transmission, if
It is that then the current state in which of sd storage cards is sent to host computer by MCU micro-control units；
4）In 40s, whether MCU micro-control units receive the reading data command of host computer transmission, if performing step
5；
5）Whether the state of sd storage cards is read states, if so, the data in sd storage cards are then passed through RS232 equipment
It is uploaded to host computer；
6）In 40s, whether MCU micro-control units receive the erasing data command of host computer transmission, if performing step
Rapid 7；
7）Whether the state of sd storage cards is wiping state, if so, then the data in sd storage cards are wiped out；
8）After upper electric 40s, whether the state of sd storage cards is write state, if so, magnetic signal is then converted to electric signal,
Electric signal is converted to data signal and preserves data signal；Data signal is handled by software algorithm, and corresponding threshold value is done
Compare, then export comparative result, i.e. testing result.
The beneficial effects of the invention are as follows：
The present invention utilizes high-precision magnet sensor arrangement, shortens magnet sensor arrangement and signal supervisory instrument connecting line
Road, improve accuracy of detection；In use, without being embedded under road, can be propped in road overhead, so ground is not destroyed,
Small volume, and existing magnetic signal detection device compare, and installation is simple, reduce difficulty of construction, reduce cost.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the applicating flow chart of the present invention.
Wherein, 1 is MCU micro-control units；2 be power supply；3 be magnet sensor arrangement；4 be Ad chips；5 be RS232 equipment；
6 be sd storage cards；7 be host computer.
Embodiment
The present invention is further discussed below with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of micro energy lose magnetic signal detection device, including magnet sensor arrangement 3, power supply 2, its feature exist
In power supply 2 is connected with MCU micro-control units 1, Ad chips 4, low-watt consumption magnetic sensor 3 respectively, low-watt consumption magnetic sensor 3, Ad
Chip 4, MCU micro-control units 1 are sequentially connected, and MCU micro-control units 1, RS232 equipment 5, host computer 7 are sequentially connected, and MCU is micro-
Control unit 1 connects sd storage cards 6；
The magnet sensor arrangement is used to magnetic signal being converted to electric signal, and is transferred to Ad chips 4；
The Ad chips 4 are used to the electric signal be converted to data signal.
The Ad chips 4 use ads1220 acquisition chips.
Described MCU micro-control units 1 use stm32f051r8t6 controllers.
Described sd storage cards 6 are using sudden strain of a muscle enlightening 2gSD.
It is described on micro energy lose magnetic signal detection device after electricity, in 40s, if micro energy lose magnetic signal detection device receives
The setting sd storage cards 6 that upper computer equipment 7 is sent out are data read command, erasing data command, arrange parameter order.
If MCU micro-control units 1 do not receive 7 any order of upper computer equipment in upper electric 40s, then MCU micro-controls after 40s
The state that unit 1 processed is currently according to sd storage cards 6 is digital to judge whether to convert electrical signals into data signal and preservation
Signal, if sd storage cards 6 are in write state, MCU micro-control units 1 convert electrical signals into data signal and preserve numeral
Signal, and data signal is detected, by software algorithm, export testing result.If micro energy lose magnetic signal detection device is each
After upper electric 40s, all detect that sd storage cards 6 are in write state, micro energy lose magnetic signal detection device can changes electric signal
For data signal and data signal is preserved, and the last time upper electricity data of data signal preserved and the data that preserve next time are in sd
It can distinguish in storage card 6.
MCU micro-control units 1 convert electrical signals into data signal and preserve data signal, pass through magnet sensor arrangement 3
Magnetic signal to be measured is converted into electric signal, then electric signal transmission is acquired to Ad chips 4 and converts electrical signals to number
Word signal, Ad chips 4 are digital data transmission to MCU micro-control units 1；Data signal is stored in sd by MCU micro-control units 1
In storage card 6.
Data signal and output testing result are detected, by MCU micro-control units 1 data signal by software algorithm
Reason, and corresponding threshold value compare, and then export comparative result, i.e. testing result.
Micro energy lose magnetic signal detection device can read number in sd cards by USART and upper machine communication using host computer
According to, data are wiped, the reading and writing of sd cards are set, wipe state, reading sd card-like states, arrange parameter.
A kind of application process of micro energy lose magnetic signal detection device, comprises the following steps：
Step 1：After upper electricity, system initialization, timer initialization and timing；
Step 2：In 40s, whether MCU micro-control units 1 receive the reading and writing of the transmission of host computer 7, wipe three kinds of states
A kind of status command in order, if so, then the state of sd storage cards 6 is changed to corresponding reading and writing, wipes three kinds according to order
A kind of state in state；
Step 3：In 40s, whether MCU micro-control units 1 receive the state of reading sd storage cards 6 of the transmission of host computer 7
Order, if so, then the current state in which of sd storage cards 6 is sent to host computer by MCU micro-control units 1；
Step 4：In 40s, whether MCU micro-control units 1 receive the reading data command of the transmission of host computer 7, if holding
Row step 5；
Step 5：Whether the state of sd storage cards 6 is read states, if so, then the data in sd storage cards 6 are passed through
RS232 equipment 5 is uploaded to host computer 7；
Step 6：In 40s, whether MCU micro-control units 1 receive the erasing data command of the transmission of host computer 7, if
Perform step 7；
Step 7：Whether the state of sd storage cards 6 is wiping state, if so, then the data in sd storage cards 6 are wiped out；
Step 8：After upper electric 40s, whether the state of sd storage cards 6 is write state, if so, magnetic signal is then converted to electricity
Signal, convert electrical signals into data signal and preserve data signal；Data signal is handled by software algorithm, and accordingly
Threshold value compares, and then exports comparative result, i.e. testing result.
Claims (4)
1. a kind of application process of micro energy lose magnetic signal detection device, including power supply（2）Respectively with MCU micro-control units（1）、Ad
Chip（4）, low-watt consumption magnetic sensor（3）It is connected, low-watt consumption magnetic sensor（3）, Ad chips（4）, MCU micro-control units（1）
It is sequentially connected, MCU micro-control units（1）, RS232 equipment（5）, host computer（7）It is sequentially connected, MCU micro-control units（1）Connection
Sd storage cards（6）；The low-watt consumption magnetic sensor（3）For magnetic signal to be converted into electric signal, and it is transferred to Ad chips（4）；
The Ad chips（4）For the electric signal to be converted to data signal, it is characterised in that described micro energy lose magnetic signal detection
The application process of device comprises the following steps：
1）After upper electricity, system initialization, timer initialization and timing；
2）In 40s, whether MCU micro-control units receive the reading and writing of host computer transmission, wipe a kind of shape in three kinds of status commands
State order, if so, the state of sd storage cards is then changed to one kind in three kinds of corresponding reading and writing, wiping states according to order
State；
3）In 40s, whether MCU micro-control units receive the order of the reading sd storage card states of host computer transmission, if so, then
The current state in which of sd storage cards is sent to host computer by MCU micro-control units；
4）In 40s, whether MCU micro-control units receive the reading data command of host computer transmission, if performing step 5；
5）Whether the state of sd storage cards is read states, if so, then the data in sd storage cards, by RS232 equipment
It is transmitted to host computer；
6）In 40s, whether MCU micro-control units 1 receive the erasing data command of host computer transmission, if performing step 7；
7）Whether the state of sd storage cards is wiping state, if so, then the data in sd storage cards are wiped out；
8）After upper electric 40s, whether the state of sd storage cards is write state, if so, magnetic signal is then converted to electric signal, telecommunications
Number be converted to data signal and preserve data signal；Data signal is handled by software algorithm, and corresponding threshold value compares,
Then comparative result, i.e. testing result are exported.
A kind of 2. application process of micro energy lose magnetic signal detection device according to claim 1, it is characterised in that the Ad
Chip（4）Using ads1220 acquisition chips, can be communicated by USART and upper computer software.
3. the application process of a kind of micro energy lose magnetic signal detection device according to claim 1, it is characterised in that described
MCU micro-control units（1）Using stm32f051r8t6 controllers.
4. the application process of a kind of micro energy lose magnetic signal detection device according to claim 1, it is characterised in that described
Sd storage cards（6）Using 2gSD.
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| CN104900069B true CN104900069B (en) | 2018-01-19 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908278A (en) * | 2010-08-09 | 2010-12-08 | 北京交通发展研究中心 | Wireless magnetic induction intensity vehicle detection method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5467084A (en) * | 1994-03-28 | 1995-11-14 | Jervis B. Webb Company | Vehicle position determining apparatus |
| WO1999017079A1 (en) * | 1997-09-29 | 1999-04-08 | Aichi Steel Works, Ltd. | Magnetic apparatus for detecting position of vehicle |
| CN2836131Y (en) * | 2005-07-26 | 2006-11-08 | 天津迈格科技有限公司 | Vehicle detector |
| CN100580737C (en) * | 2007-08-08 | 2010-01-13 | 中科院嘉兴中心微***所分中心 | Wireless sensor network system and detection method utilizing huge magneto-resistance magnetic-sensing technology for detecting vehicle information |
| CN101751787A (en) * | 2008-12-03 | 2010-06-23 | 北京宏德信智源信息技术有限公司 | Multifunctional vehicle intelligent testing sensor and testing method thereof |
| CN104299422B (en) * | 2014-11-06 | 2016-07-06 | 四川大学 | A kind of earth magnetism vehicle detection apparatus and control method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908278A (en) * | 2010-08-09 | 2010-12-08 | 北京交通发展研究中心 | Wireless magnetic induction intensity vehicle detection method and device |
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