CN108628268A - Mechanically moving precision address detection system - Google Patents
Mechanically moving precision address detection system Download PDFInfo
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- CN108628268A CN108628268A CN201810394874.8A CN201810394874A CN108628268A CN 108628268 A CN108628268 A CN 108628268A CN 201810394874 A CN201810394874 A CN 201810394874A CN 108628268 A CN108628268 A CN 108628268A
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- 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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by the network communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a kind of mechanically moving precision address detection systems, by ground loop coding emitting portion (1), cable coded portion (2), antenna part (3), decoded portion (4) on vehicle, scm software calculates address part (5), the control sections PLC (6), external control section (7) composition, ground loop coding emitting portion (1) generates 49KHz carrier signals, cable coded portion (2) generates address Gray encoded signal, antenna part (3) is to spatial emission address Gray encoded signal, address Gray encoded signal is converted and transferred to microcontroller by decoded portion (4) on vehicle, microcontroller is transmitted to the control sections PLC (6) by signal is calculated, the drive apparatus of external equipment is controlled by external control section (7) again.The present invention provides a kind of serial address detection scheme for being reliable and easy to carry out, the detection speed of system address can be improved, inspection immediately address can be arrived simultaneously when running machinery on induction cable, machinery can directly know the address of oneself, the exactness and accuracy of automatic running and automatic positioning.
Description
Technical field
The present invention relates to a kind of mechanically moving precision address detection systems, are particularly suitable for iron and steel enterprise's raw material plant machinery phase
The control system of the functions such as joint control is concentrated in communication, action interlocking, production Whole Course Management and computer between mutually.
Background technology
The induction antenna moved on mechanically moving is realized logical with the coding cable mutual induction along track installation
Letter, and position of the detection induction antenna on coding cable length direction while communication, especially suitable for mechanically moving
It is accurately positioned and interlocked control, can realize mechanically moving automatically walk and unattended.Due to existing in traditional mechanically moving
Field bad environments, there are high temperature, more dirt, corrosive gas, electrical Interference and the frequent movement of vehicle and the essences of technological requirement
It determines the factors such as position, this automatic technology problem is caused to become the problem of industry, never well solve at home, mesh
Before, also in the manual operation and other less successful control methods fallen behind using tradition.
Invention content
It is rapid accurate the purpose of the present invention is for the disadvantage and deficiency in background technology, providing a kind of dependable performance
Mechanically moving precision address detection system.
The technical scheme is that：A kind of mechanically moving precision address detection system, it is characterised in that：By recycling on the ground
Coded excitation part, cable coded portion, antenna part, decoded portion, scm software calculate address part, PLC controls on vehicle
System part, external control section composition, ground loop coding emitting portion generate 49KHz carrier signals, the output of carrier signal
It is connected with the input of cable coded portion, cable coded portion generates address Gray encoded signal, antenna by intersecting to line
Partly senses address Gray encoded signal and to spatial emission, be connected with the input of decoded portion on vehicle, lsb decoder on vehicle
Divide and the address Gray encoded signal that antenna part emits is converted into numeric code signal, numeric code signal is transmitted to microcontroller meter
The input terminal of address part is calculated, microcontroller calculates address part and numeric code signal series is converted into address letter by algorithm
Number, the output signal that microcontroller calculates address part is transmitted to the control sections PLC, and the control sections PLC calculate ground according to microcontroller
The address signal that location part generates controls external control section, and external control section controlled by the signal that PLC is sent
The drive apparatus of external equipment processed.
Loop coding emitting portion in ground of the present invention is carried the carrier generating circuit of power amplification by 49KHz, microcontroller, translated
Code device and high-speed switch composition, carrier generating circuit output positive carrier signal and phase inverted carrier of the 49KHz with power amplification
Signal is respectively transmitted to the input terminal of high-speed power switch, and the output of microcontroller is connected with the input of decoder, decoder warp
Control terminal after decoding respectively with high-speed switch is connected.
The construction of cable length of cable coded portion of the present invention is 102.4 meters, and base address unit is 1024, individually
Location element length is 0.1 meter, and right to line 10 equipped with address, base address is right to line 1, and communication is right to line 2；Address uses lattice to line
Thunder code coding rule.
Inventive antenna part (3) is reported to the leadship after accomplishing a task reception mode using double antenna, and the coil width of two antennas is that the minimum of G0 is handed over
Fork, mounting distance intersect equal to the minimum of G0 plus an address location length.
Decoded portion (4) is decoded two parts and is formed by the decoding of thick address and accurate address on vehicle of the present invention, thick address decoding
It is made of antenna part (3), zero-crossing comparator, shift register, NOR gate circuit, accurate address decoding is by double antenna coil
T1, T2 and A/D converter composition.
Loop coding transmitting in ground of the present invention includes the following steps：
a）By the coding rule of flat cable, self-defined burst of data stream recycles hair carrier signal according to the sequence of data flow；
b）Microcontroller timing sends carrier signal, and has inverting terminal, carrier frequency 49KHz in the output of carrier signal；
c）High-speed switch connects with the input interface of cable, the output of loop control carrier signal.
Coding/decoding method includes the following steps on vehicle of the present invention：
A, thick address decoding
A) output signal of shift control module is transmitted to read signal values module, moves to left into 18 bit registers；
B) judge that low 9 are " 00000001G ", if accurate low 9 of the address subroutine module of calling test is not
" 00000001G ", then program, which enters, judges whether most-significant byte is " 00000001 " module；
If c) most-significant byte is " 00000001 ", engineering sequence enters the module for taking register value, by the value of 18 bit register with
" 000000001111111111 ", phase "AND", if the data most-significant byte for further taking out low 10 is not " 00000001 ", program
It returns；
D) output signal of the module of register value is taken to be transmitted to by the module that this Gray code conversion is binary code, as slightly
Location.Program returns after thick address preserves；
B, smart address decoding
A) it is transmitted to from the output signal of the accurate address subroutine entry of calling test and takes antenna T1 rectified values, after A/D is converted,
A1 variable modules are sent into, output signal, which is transmitted to, takes antenna T2 rectified values, after A/D is converted, is sent into A2 variable modules；
B) be transmitted to the ratio module of A1/A2 from the output signal of A2 variable modules, the value of the A1/ A2 table look-up value=
Seqnum, output signal be transmitted to judge thick address lowest order whether be ' 0 ' module；
If c) judging that main address lowest order is：" 0 ", if then absolute address=thick main address lowest orders of address+seqnum are：
" 1 ", then absolute address=thick address+1-seqnum；It is defeated to return after rolling.
The present invention is by inductive radio communication technology by feeling between the real-time accurate position detection and Ge Che of mechanically moving
It answers the real-time data communication that wireless technology is set up, system to use three-level computer structure, is partly the control of system on machine
Grade, main controller use SIEMENS S7-200 series of PLC；Control centre constitutes the middle control grade of system, by SIEMENS S7-
300 series of PLC and ground office (ground location detection device and communication equipment) composition；Communication between the two uses induction wireless skill
Art is completed by code flat cable and aircraft antenna；Management level is made of plan record and two industrial personal computers of real-time animation, with
Middle control grade communication is completed by serial line interface, and by the LAN connection of network adapter and enterprise, realizes more higher leveled pipe
Reason monitoring.Because management computer and control centre are respectively positioned on ground level control room, therefore system is regarded as flat by part, coding on machine
Cable, ground Central Control Room (plan record, real-time animation industrial personal computer+control centre) three parts composition.
Whole system is organically joined each mechanically moving and ground level control room by the code flat cable along track installation
It is tied.Segment controller and ground real-time network center are sent on code flat cable conveyer signal simultaneously generates address
Signal is detected, the induction wireless position detection device for being sent to ground Central Control Room obtains the absolute position precisely in real time of each vehicle.Machine
Upper part is exchanged information with mechanical electric apparatus room by controller, transmits information to passengers inside the car by digital display screen and voice.
Real-time network forms control command centrally through the information that collection, analysis, each machinery of processing are sent and each turner is commanded to make.At data
Reason center (record plan industrial personal computer) can automatically generate the production schedule, record, statistical report form, and real-time animation industrial personal computer dynamic is aobvious
Show each machine work state.
Each mechanically moving realizes respective data communication and position detection, and each using one group of code flat cable
Mechanically moving corresponds to a ground office, and ground office communicates two parts by address detected and data and form, and address detected is partially completed pair
Answer the position detection of each vehicle on code flat cable；Data communication section point completes Central Control Room and each Working vehicle on corresponding cable
Liaison and data transmission.Part is made of office on controller on vehicle and machine on vehicle, and controller is responsible for collection machinery work
State and related action message, action command is sent out to machinery；Office is controlled by antenna box and coding cable with ground on machine
Room carries out liaison and data transmission.
The compositions such as code flat cable and antenna box, beginning case, intersegmental case, termination rack communicate the medium with position detection,
It is the bridge linked up between machinery and ground Central Control Room.Transmission antenna uses separate installment with reception antenna so that examines position
Survey is independent of each other with communication, reliable and stable with position detection to ensure to communicate.Meanwhile because it is all installed on outdoor, so
They all use all-sealed structure, to adapt to severe site environment.
It is an advantage of the present invention to provide a kind of schemes being reliable and easy to the serial address carried out detection, can improve systematically
The detection speed of location can detect address simultaneously when running vehicle on induction cable, can directly know on vehicle certainly immediately
Oneself address, and train automatic broadcasting, the exactness and accuracy of automatic running and automatic positioning can be improved.
Description of the drawings
Fig. 1 is the overall system block diagram of the present invention；
Fig. 2 is that the circuit diagram of part is drawn on the ground of the present invention；
Fig. 3 is the cable proofreader figure of the present invention；
Fig. 4 is the thick address decoding block figure of the present invention；
Fig. 5 is the accurate address antenna structure of the present invention；
Fig. 6 is that the double antenna of the present invention is reported to the leadship after accomplishing a task record principle figure；
Fig. 7 is the circuit diagram of part on the vehicle of the present invention；
Fig. 8 is the thick address detected software flow pattern of the present invention；
Fig. 9 is the accurate address inspection software flow chart of the present invention；
Figure 10 is the control sections plc of the present invention and external control section wiring block diagram.
Specific implementation mode
As shown in Figure 1, the present invention is by ground loop coding emitting portion (1), cable coded portion (2), antenna part
（3）, decoded portion on vehicle（4）, scm software calculate address part (5), the control sections PLC（6）, external control section (7)
Composition, ground loop coding emitting portion (1) generate 49KHz carrier signals, output and the cable coded portion of carrier signal（2）
Input be connected, cable coded portion (2) pass through to line intersect generate address Gray encoded signal, antenna part (3) induction
To address Gray encoded signal and to spatial emission, it is connected with the input of decoded portion on vehicle (4), decoded portion (4) on vehicle
The address Gray encoded signal of antenna part (3) transmitting is converted into numeric code signal, numeric code signal is transmitted to microcontroller
The input terminal of address part (5) is calculated, microcontroller calculates address part (5) and is converted into numeric code signal series by algorithm
Address signal, the output signal that microcontroller calculates address part (5) are transmitted to the control sections PLC (6), the control sections PLC (6) root
The address signal that address part (5) generates is calculated according to microcontroller to control external control section (7), and external control section (7) is logical
The signal that PLC is sent is crossed to control the drive apparatus of external equipment.
As shown in Fig. 2, the square-wave signal that the triggering of microcontroller IC5 timer clocks generates passes through the integrating circuit of R1, Cl composition
The sine wave signal of certain 49KHz is converted to after low-pass filtering, sine wave signal amplifies through amplifier Integrated circuit IC 6, IC7 two-stages
After be output to power amplifier IC8, the output of signal all the way of power discharging IC 8 is transmitted to the letter of high-speed power switch IC1, IC2, IC3
Number input terminal, the another way signal output of power discharging IC 8 is inputted with the Same Name of Ends of transformer T1 in proportion to be connected, transformer T1's
The signal that the output of different name end is transmitted to the inversion signal of line R as base address high-speed power switch IC1, IC2, IC3 inputs
End.The 4 road address gating signals that microcontroller IC5 is generated send decoder IC4 to, and decoder IC4 is controlled by decoding gating respectively
Output of the address processed to the signal output of line G0-G9 and substantially to the positive and inversion signal of line R.
As shown in figure 3, the structure of cable section is made of line address, 2 or more addresses are long to the unit of line when use
Degree can be concatenated mutually.
As shown in figure 4, thick address decoding is by antenna part (3), zero-crossing comparator, shift register, NOR gate circuit group
At antenna part sends out the input terminal for being output to NOR gate circuit all the way by amplifying filtered sine wave signal, another way
Another input terminal of XOR gate is output to after a cycle T displacements, the numeric code signal that output is compared through exclusive or is defeated again
Enter the input terminal to microcontroller address.
As shown in figure 5, the present invention antenna part be made of double antenna coil T1, T2, coil width be G0 to line most
Small intersection, coil T1 is differed with the center of T2 intersects (0.2 meter for G0 to the small of line）Add 0.1 meter of minimum unit length, T1
With T2 in the signal amplitude size variation such as Fig. 5 that train incudes shown in b.This antenna structure is suitble to accurate address decoding process.
The record principle figure as shown in fig. 6, double antenna is reported to the leadship after accomplishing a task.Cable sends the carrier signal of 49KHz, by by line chart L, electricity
R2 is hindered, the frequency-selecting resonant tank induction of capacitance C2 compositions receives, and the signal received is coupled capacitance C3, same phase by homophase input
Input resistance R3 is transmitted to operational amplifier IC1, and signal amplification passes through feedback resistance R6 feed back inputs, another portion with rear portion
Lease making is crossed by C5, and coupling transformer T1 is given in the integrating circuit filtering of R7 compositions, and signal is coupled and exported by coupling transformer T1.Its
The circuit of middle R8, R9 composition provides the DC level of 12V, capacitance C6, C7, C8 for frequency-selecting resonant tank, and C9 protections are supplied to choosing
The DC level of frequency resonant tank.
Microcontroller calculates address part (5) and sends calculated real-time address to the control sections PLC (6) by serial ports,
Automatic broadcasting, the automatic positioning of train are realized by real-time address and the signal acquired from miscellaneous equipment in the control sections PLC (6)
Effective control.The control sections PLC (6) by serial ports by signal transmission calculate serial port, come realize computer management and
Animation function for monitoring.
As shown in fig. 7, the decoded circuit in address is realized on vehicle.Antenna part receive the signal that comes by preposition amplification,
Effective sinusoidal signal U1 that filtering, secondary amplification generate, U1 pass through voltage comparator circuit IC5 Zero-cross comparators, generate square-wave signal,
Send shift register IC2 to, shift register IC2 generates two paths of signals Ui1 and Ui2, and Ui2 is that Uil is delayed after 208 microseconds and produces
Raw signal, two paths of signals are connected with the input terminal of NOR gate circuit IC4A, and the signal of generation passes through R17 and R18 low pass filtereds
Signal after wave is connected with an input terminal of NOR gate circuit IC4B, another input terminal of NOR gate circuit IC4B and ground phase
It connects, the signal of output becomes regular numeric code letter and draw special delivery to receive the numeric code of this series by software to IC1, IC1
Signal, is converted to binary code, and this kind of binary code is exactly the thick address needed for us.Signal U2 is that signal U1 rectifications obtain later
The signal arrived, signal U3 are that another reception antenna T1 receives the signal to come by preposition amplification, filtering, secondary amplification, whole
The signal obtained after stream.Signal U2 and signal U3 is converted to address coding signal, address coding letter by A/D converter IC3
Number send the address input end mouth of IC1 to, IC1 calculates accurate address by software, then by accurate address and thick address phase
Add to obtain the absolute address needed for us.
The working method of present system：
The specific works of ground launch part are：Gating address sends carrier wave to line G0-G9 and base address to line R successively, and one
The time span of position is that a symbol is long, as the inverse of baud rate, is sent into inversion signal of the base address to line；Baud rate is
4800bps, carrier frequency 49KHz；Circuit occurs for one carrier signal with power amplification, and has anti-phase output；Respectively
There are one high speed controlled switch for band before cable proofreader interface；The step of transmitting of each code is that first the timer clock by microcontroller triggers
Into interruption, timer clock determines the time of transmitting each code element, gating code at that time is sent to decoder for decoding by microcontroller,
Control signal is sent to the control terminal of each high-speed switch by the output end of decoder, only gates a high-speed switch and a pair of electricity
Cable is sent.
Flat cable compiling method is：The unified construction of cable is：102.4 meters of length, base address unit 1024, individually
Ground element length is 0.1 meter；It is right to line 10 equipped with address, it is G0-G9；For base address to line a pair of R, communication is right to line 2, is
L0, L1；Address is to line using gray encoding rule.
Address decoding includes that thick address decoding and accurate address decode two parts, the thick decoded specific works in address on vehicle
It is：
Hardware components use：Convert sine wave signal to the zero-crossing comparator of square-wave signal, the displacement for a cycle that is delayed is posted
Storage, exclusive or compare gate circuit；As shown in figure 8, the decoded software flow pattern in thick address on vehicle.Its concrete implementation method is：
The output signal of step 100 shift control module is transmitted to read signal values module, and step 102 is moved to left into 18 bit registers.Step
104 judge whether low 9 be " 00000001G ", if if it is the accurate address subroutine module of 106 calling test is entered step
Low 9 are not " 00000001G ", then program enters step 108 and judges whether most-significant byte is " 00000001 " module.If most-significant byte
" 00000001 " that engineering sequence enters the module that step 110 takes register value, by the value of 18 bit register with
" 000000001111111111 " phase "AND" further takes out low 10 data；If most-significant byte is not " 00000001 ", program
It returns.
The output signal of the module of register value is taken to be transmitted to mould of the step 112 by this Gray code conversion for binary code
Block, as thick address.Program returns after thick address preserves.
Specific works step is：The symbol signal that the signal that antenna T0 is received is converted to level through Zero-cross comparator is sent to different
The symbol signal that the signal that one input terminal antenna T0 of OR circuit is received is converted to level through Zero-cross comparator passes through the n that is delayed
The shift register of doubling time；It is sent to another input port two paths of signals of NOR gate circuit after the signal delay of shift register
Become required symbol level signal after NOR gate circuit and read this serial code by scm software control, obtains serial
Address yardage.
The decoded specific works in accurate address are to use double antenna receiving method on vehicle, and antenna width is two address locations
Length, two antenna installation differences are that G0 adds 0.1 meter to the small intersection of line；After ground launch G0 stablizes, the microcontroller on vehicle
After being converted by A/D, the DC level after detection is read in.
As shown in figure 9, the decoded software flow pattern in accurate address on vehicle.Its concrete implementation method is：From invocation step
The output signal of the accurate address subroutine entry of 200 tests is transmitted to step 202 and antenna T1 rectified values is taken to be sent after A/D is converted
Enter A1 variable modules, output signal is transmitted to step 204 and takes antenna T2 rectified values, after A/D is converted, is sent into A2 variable moulds
Block.The ratio module of step 206 A1/ A2 is transmitted to from the output signal of A2 variable modules, the value Check tables of the A1/ A2 must be worth=
Seqnum, output signal be transmitted to 208 thick address lowest order of judgment step whether be " 0 " module.Judge：If thick address
Lowest order is " 0 ", if then step 210 absolute address=thick address lowest orders of thick address+seqnum are：" 1 ", then step 212 is exhausted
To address=thick address+1-seqnum；It is defeated to return after rolling.
The specific works method of the control sections PLC be the control sections PLC include signal receiving module, signal processing module,
Signal transmitting module.
Signal receiving module：The binary signal of processing is converted to binary-coded decimal and is sent to the letter of PLC by microcontroller receives mould
Block.The signaling point that the scene of collecting is needed to acquire by PLC receiving modules.Communication passes through the useful signal on line L0, L1
MODEM demodulates the signal receiving module that the numeric code signal come sends PLC to.
Signal processing module：A different reference address is set in each place of working.Machinery is according to the exhausted of on-line checking
To the distance of address and reference address, carry out the gait of march of adjust automatically machinery.The mechanical absolute address for picking up survey online with
Reference address is equal, generates machinery positioning signaling point.
Signal transmitting module：The required positioning signal of control room, address signal etc. are sent by signal transmitting module.
The host computer useful signal to be acquired is transmitted by signal transmitting module.External electrical equipment on mechanically moving passes through signal
Sending module come transmit useful signal, positioning signal realizes automatic advance.
As shown in Figure 10, mechanically moving precision address detection system is listed in figure in order to realize automatic control function, PLC
The wiring diagram of control section and external control section.When the collected absolute address in the control sections PLC is equal with reference address,
PLC by (RS232/RS485) serial port send one in place signal give sound broadcast system, realize automatic test position
Function.The control sections PLC are by the comparison to absolute address and reference address, to realize the real-time accurate position for pushing away mechanically moving
The function of detection.
Claims (7)
1. a kind of mechanically moving precision address detection system, it is characterised in that：By ground loop coding emitting portion (1), cable
Coded portion (2), antenna part (3), decoded portion (4), scm software calculate address part (5), the control sections PLC on vehicle
(6), external control section (7) composition, ground loop coding emitting portion (1) generate 49KHz carrier signals, carrier signal it is defeated
Go out and be connected with the input of cable coded portion (2), cable coded portion (2) generates address Gray code letter by intersecting to line
Number, antenna part (3) senses address Gray encoded signal and to spatial emission, is connected with the input of decoded portion on vehicle (4)
It connects, the address Gray encoded signal that antenna part (3) emits is converted numeric code signal, digital code by decoded portion (4) on vehicle
First signal is transmitted to the input terminal that microcontroller calculates address part (5), and microcontroller calculates address part (5) by numeric code signal
Series is converted into address signal by algorithm, and the output signal that microcontroller calculates address part (5) is transmitted to the control sections PLC
(6), the control sections PLC (6) calculate the address signal that address part (5) generates to control external control section according to microcontroller
(7), external control section (7) is sent by PLC signal controls the drive apparatus of external equipment.
2. mechanically moving precision address detection system according to claim 1, it is characterised in that：The ground loop coding
Emitting portion (1) is made of carrier generating circuit, microcontroller, decoder and high-speed switch of the 49KHz with power amplification,
Carrier generating circuit output positive carrier signal and phase inverted carrier signals of the 49KHz with power amplification are respectively transmitted to high speed work(
The input terminal of rate switch, the output of microcontroller is connected with the input of decoder, decoder after decoding respectively with high-speed switch
Control terminal be connected.
3. mechanically moving precision address detection system according to claim 1, it is characterised in that：The cable coded portion
(2) construction of cable length is 102.4 meters, and base address unit is 1024, and individual address element length is 0.1 meter, is equipped with
Address is right to line 10, and base address is right to line 1, and communication is right to line 2；Address is to line using gray encoding rule.
4. mechanically moving precision address detection system according to claim 1, it is characterised in that：The antenna part (3)
It is reported to the leadship after accomplishing a task reception mode using double antenna, the coil width of two antennas is that the minimum of G0 intersects, and mounting distance is handed over equal to the minimum of G0
Fork adds an address location length.
5. mechanically moving precision address detection system according to claim 1, it is characterised in that：Decoded portion on the vehicle
(4) two parts are decoded and are formed by the decoding of thick address and accurate address, thick address decoding is by antenna part (3), zero-crossing comparator, shifting
Bit register, NOR gate circuit composition, accurate address decoding are made of double antenna coil T1, T2 and A/D converter.
6. mechanically moving precision address detection system according to claim 1, it is characterised in that：Ground loop coding transmitting
Include the following steps：
a）By the coding rule of flat cable, self-defined burst of data stream recycles hair carrier signal according to the sequence of data flow；
b）Microcontroller timing sends carrier signal, and has inverting terminal, carrier frequency 49KHz in the output of carrier signal；
c）High-speed switch connects with the input interface of cable, the output of loop control carrier signal.
7. mechanically moving precision address detection system according to claim 1, it is characterised in that：Coding/decoding method includes on vehicle
The following steps：
A, thick address decoding
A) output signal of shift control module is transmitted to read signal values module, moves to left into 18 bit registers；
B) judge that low 9 are " 00000001G ", if accurate low 9 of the address subroutine module of calling test is not
" 00000001G ", then program, which enters, judges whether most-significant byte is " 00000001 " module；
If c) most-significant byte is " 00000001 ", engineering sequence enters the module for taking register value, by the value of 18 bit register with
" 000000001111111111 ", phase "AND", if the data most-significant byte for further taking out low 10 is not " 00000001 ", program
It returns；
D) output signal of the module of register value is taken to be transmitted to by the module that this Gray code conversion is binary code, as slightly
Location, program returns after thick address preserves；
B, smart address decoding
A) it is transmitted to from the output signal of the accurate address subroutine entry of calling test and takes antenna T1 rectified values, after A/D is converted,
A1 variable modules are sent into, output signal, which is transmitted to, takes antenna T2 rectified values, after A/D is converted, is sent into A2 variable modules；
B) be transmitted to the ratio module of A1/A2 from the output signal of A2 variable modules, the value of the A1/ A2 table look-up value=
Seqnum, output signal be transmitted to judge thick address lowest order whether be ' 0 ' module；
If c) judging that main address lowest order is：" 0 ", if then absolute address=thick main address lowest orders of address+seqnum are：
" 1 ", then absolute address=thick address+1-seqnum；It is defeated to return after rolling.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733778A (en) * | 2018-12-25 | 2019-05-10 | 盐城汇金科技信息咨询服务有限公司 | A kind of traveling control device and control method of lane stacker |
| CN114812649A (en) * | 2021-01-18 | 2022-07-29 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Test system of cross induction loop line under superspeed environment |
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| CN114812649A (en) * | 2021-01-18 | 2022-07-29 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Test system of cross induction loop line under superspeed environment |
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