CN203588275U - Address detector based on combination of code card identification and absolute value encoder - Google Patents
Address detector based on combination of code card identification and absolute value encoder Download PDFInfo
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- CN203588275U CN203588275U CN201320790780.5U CN201320790780U CN203588275U CN 203588275 U CN203588275 U CN 203588275U CN 201320790780 U CN201320790780 U CN 201320790780U CN 203588275 U CN203588275 U CN 203588275U
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Abstract
The utility model relates to an address detector which is mainly applied to address detection of an industrial operation locomotive and comprises an address detector, an absolute value encoder, a code card, a reading head and a laser correlation photoelectric sensor, and provides a locomotive address detection scheme based on an address and a segment address. A locomotive-mounted part is provided with the reading head, and a ground station part is provided with the code card. Tapping is carried out on the code card according to certain rule. Each code card identifies a unique code, and the code records the base address position information of the locomotive. The reading head is provided with the laser correlation photoelectric sensor. A laser correlation photoelectric sensing technology is used to read the hole position information of the code card to acquire the base address. The absolute value encoder is arranged on a main axle of the locomotive. When the locomotive moves, the absolute value encoder outputs the digital segment address with the rotation of the main axle. The address detector provided by the utility model has the advantages of abundant interfaces, strong expansibility, convenient system upgrade and the like.
Description
Technical field
The utility model relates to a kind of address detection device, be mainly used in the address detected of industrial operations locomotive, refer in particular to a kind of position, laser-correlation photoelectric sense technology readout code board hole information that adopts and locomotive address is carried out to the device accurately detecting in conjunction with the data of absolute value encoder.
Background technology
The address detected mode of industrial operations locomotive, roughly just like several, still has relative merits separately both at home and abroad.
1, inductive wireless technology is the new technology that developed country's late nineteen seventies rises, and this technology is mainly used in data communication, the address detected of large automobile and in conjunction with computer technology, automatic technology, reaches the object of automatic control.Inductive wireless technology closes wireless telecommunications and heat (batch) number location recognition in one, can realize large automobile location and and ground communications, can adapt to rugged environment, be good solution technically.But it is very complicated that the disadvantage of this scheme is technology, cost costliness, and cable be easy to damage, once damage maintenance difficult, servicing time is long, and maintenance cost is high.
2, radio-frequency (RF) identification (RFID) technology is a new type auto recognition technology of rising the nineties, and its outstanding advantages is to utilize wireless radio frequency mode to carry out noncontact both-way communication, thereby reaches the object of identification target and exchanges data.Utilizing RFID technology to carry out locomotive address detected is that the electronic tag with fixed number is embedded in the middle of rail, utilize read write line on car to identify and the specific address of definite vehicle, it is low that it has cost, strong adaptability, the advantages such as antijamming capability is strong, and pre-buried label is passive.But its shortcoming is that to align precision on the low side, thereby likely read multiple electronic labeling informations simultaneously, cannot correctly detect locomotive address.
3, utilizing approach switch to add metal code board, to carry out locomotive address detected be to overcome a kind of scheme that the interference such as industry spot dust, fog are taked.But because approach switch actual induction distance is short, be no more than 10cm, make the distance between approach switch and code board be difficult to control, can not guarantee to align precision, and metal code board can not realize specific coding, the software work amount of heat (batch) number identification and the labile factor of system are increased.
Summary of the invention
The purpose of this utility model is in addition improvement and bring new ideas of the shortcoming in background technology and problem, provides a kind of simple in structure, and accuracy of detection is high, and what cost was low identifies based on code board the address detection device combining with absolute value encoder.
The technical solution of the utility model is a kind of address detection device of structure, it comprises address detection device, absolute value encoder, code board, read head, laser-correlation photoelectric sensor, wherein: vehicle-mounted part arranges read head land station part a yard board is set, code board is according to certain rule perforate, a unique coding of every block code board sign, by the base address location information of this encoded recording locomotive; Read head is provided with laser-correlation photoelectric sensor, and absolute value encoder is arranged on locomotive main wheel shaft, and when locomotive moves, absolute value encoder is along with main axle rotates the sector address of exporting digital quantity;
Described address detection device comprises power module, LED display section, parallel uploading data interface section, ARM7 processor part, RS485 communication interface part, power down save data module, reset and power-fail detection circuit part, Profibus-DP bus interface part, laser-correlation type photoelectric sensor readout code board coded message part.
The utility model is identified the address detection device combining with absolute value encoder based on code board, through experiment, detect error in address <=5mm, adapt to the accuracy requirement of current industrial locomotive address detected completely, in product, adopted advanced ARM technology and many kinds of measures to improve system reliability, possesses rich interface, extensibility is strong, the advantages such as system upgrade is convenient, for the design of industrial locomotive address detected provides a kind of brand-new solution, will certainly be widely used in industrial locomotive address detected field.
The utility model advantage has following advantage and effect:
1, the utility model adopts the mode that the identification of code board and absolute value encoder combine, for industrial locomotive has been developed a kind of brand-new address detection device.This apparatus structure is simple, and accuracy of detection is high, and cost is low.Because mainly adopting software, Core Feature completes, simplified hardware circuit design, reliability is high, antijamming capability is strong, simultaneity factor upgrading is convenient, in addition, because this system has abundant Peripheral Interface, the interface that can facilitate the expansion of systemic-function and realization and the industrial automation equipments such as PLC, industrial computer with communicate by letter.
2, the cumulative errors during the mode that base address adds high resolving power sector address has reduced to detect effectively, have guaranteed the accuracy of whole address detected.
3, owing to having adopted absolute value encoder to make address detected sensitivity reach 1mm.
4, the error in address that this address detection device detects can <=5mm.
5, loss of data when preventing locomotive power down, does not know locomotive specific address now while again powering on, this address detection device has designed power-fail detection circuit and data storage circuitry to address the above problem in hardware circuit.
Accompanying drawing explanation
Fig. 1 is the coded system key diagram of yard board.
Fig. 2 is the structural representation of read head.
Fig. 3 is address detected mode key diagram.
Fig. 4 is address detection device overall construction drawing.
Fig. 5 is address detection device hardware structure diagram.
Fig. 6 is ARM7 processor part schematic diagram.
Fig. 7 is that LED shows locomotive specific address value schematic diagram.
Fig. 8 is laser-correlation type photoelectric sensor readout code board coded message schematic diagram.
Fig. 9 is EEPROM power down save data part schematic diagram.
Figure 10 is for resetting and power-fail detection circuit part schematic diagram.
Figure 11 is Power supply part schematic diagram.
Figure 12 is profibus bus interface schematic diagram.
Figure 13 is RS485 communication interface schematic diagram.
Figure 14 is the parallel uploading data interface principle figure of address detection device.
Embodiment
Known according to Fig. 1 to 15, the utility model comprises address detection device, absolute value encoder, code board 1, read head 2, laser-correlation photoelectric sensor 3, wherein,
Vehicle-mounted part arranges read head 2 land station's parts yard board 1 is set, and code board 1 is according to certain rule perforate, and a unique coding of every block code board sign, by the base address location information of this encoded recording locomotive; Read head 2 is provided with laser-correlation photoelectric sensor 3, and absolute value encoder is arranged on locomotive main wheel shaft, and when locomotive moves, absolute value encoder is along with main axle rotates the sector address of exporting digital quantity;
Described address detection device comprises power module, LED display section, parallel uploading data interface section, ARM7 processor part, RS485 communication interface part, power down save data module, reset and power-fail detection circuit part, Profibus-DP bus interface part, laser-correlation type photoelectric sensor readout code board coded message part.
On code board 1 described in the utility model, having and be composed of two rounds, is coded message above, is clock hole corresponding to coded message below.
Read head 2 described in the utility model is provided with two group six to the dynamic readout code trade mark of laser-correlation type photoelectric sensor, adopts two groups of photoelectric sensors to read respectively the code board coded message of locomotive when left lateral and right lateral.
Locomotive continuation address described in the utility model obtains, and adopts absolute value encoder to be arranged on the main axle of locomotive, and absolute value encoder is along with main axle moves, by the real-time output locomotive address information of RS485 interface.
ARM7 processor described in the utility model is LPC2148 chip, the switching value that 2148 processors send by optocoupler U5 and U6 Real-time Collection laser sensor to a code board coded message, and by RS485 Real-time Obtaining locomotive address information, LPC2148 processor is through multiple code board coded message error handling processing, multiple address smoothing algorithm afterwards, obtain, after the information of locomotive final address, being uploaded to locomotive PLC.
Parallel uploading data described in the utility model interface section, adopts latch U13, U14 and U15 to do three byte datas multiplexing, then does after level conversion through optocoupler U3 and U4, by the specific address data upload of locomotive to PLC.
Detection of power loss save data module described in the utility model, adopt MAX708 as detection of power loss chip, MAX708 inside carries a voltage comparator, by R86, R87 dividing potential drop, the branch pressure voltage causing when supply voltage, during lower than internal reference voltage 1.25V, voltage comparator is exported a negative edge at once.When LPC2148 processor collects this negative edge, immediately by the information of required preservation, be saved in outside 24C02.
Laser-correlation type photoelectric sensor readout code board coded message part described in the utility model adopts the correlation type laser photoelectricity sensor readout code board coded message of high sensitivity, built-in amplifying circuit.Laser photoelectricity sensor output digital quantity 0 when there is no restraining mass, laser photoelectricity sensor output digital quantity 1 when having restraining mass, due to perforate coding on code board in advance, ARM7 processor carrys out readout code board coded message by reading the variation of laser photoelectricity sensor digital quantity like this.
The brief introduction of the utility model technology
1, ARM7 technology brief introduction
ARM7 series comprises ARM7TDMI, ARM7TDMI-S, the ARM720T with high-speed buffer processor macroelement.This series processors provides 16 compression instruction sets of Thumb and EmbededICE software debugging mode, is applicable in more massive SoC design.ARM7 series is widely used in multimedia and embedded device, comprises Internet equipment, network and modem device, and the wireless device such as mobile phone, PDA.
ARM7TDMI processor is one of member of the general 32-bit microprocessor of ARM family.It has excellent performance, but power consumption is very low, uses the quantity of door also little.It belongs to Reduced Instruction Set Computer (RISC), more simply too much than complex instruction set computer (CISC) (CISC).Such simple implementation high instruction throughput, the response of outstanding real-time interrupt, processor macroelement little, high performance-price ratio.ARM7TDMI processor increases the speed of processor instruction stream with streamline simultaneously.Can make so several operations carry out simultaneously, and make to process and accumulator system continued operation, the instruction execution speed of 0.9MIPS/MHz can be provided.The streamline of ARM7TDMI divides 3 grades, is respectively: fetching, decoding, execution.In course of normal operation, when carrying out an instruction, next instruction is carried out to decoding, and Article 3 instruction is taken out from storer.
2, code board recognition technology
The principle of code board recognition technology is similar to infrared location technology, mainly the read head of vehicle-mounted part and the code board of land station's part, consists of.Code board is one and carries out perforate according to certain rule, and a unique coding of every block code board sign, by the base address location information of this encoded recording locomotive, as shown in Figure 1.Read head is a kind of laser-correlation device, employing be that laser-correlation photoelectric sense technology is carried out position, readout code board hole information, reach the object of address detected, in industry spot, the read head of code board adopts all-metal package structure, as shown in Figure 2.The optical transmission window of laser head transmitting, receiving unit adopts high bright, dustproof glass, and laser-correlation photoelectric sensor is arranged in read head.In locomotive traveling process, read head utilizes laser-correlation photoelectric sensor dynamically to scan every block code board, obtains the coding when former code board, can be determined the current base address location of locomotive by code board with the unique corresponding relation of locomotive base address location.
3, absolute value encoder continuation address is got location technology
Absolute value encoder is a kind of sensor of the precision measurement angular displacement based on electromagnetic induction principle, all has winding in rotor and stator.If sinusoidal exciting curent logical in rotor winding, rotor induces the voltage of same frequency in stator winding, but phase place or amplitude change with the relative displacement of rotor and stator.Induced voltage, through phase demodulation or amplitude discrimination and through the processing of the electronic circuits such as A/D conversion, export the digital signal (absolute value type) of some, or output has multiphase pulse or the sinusoidal signal of certain phase differential and difference on the frequency.This device adopts U.S. GEMPLE(Jie Anpu) the GAX60R13/12 E10 LB absolute value encoder of company, total digitalization evaluation, 1/4096 high linearity, signal is without temperature, mechanical influence, signal disturbs zero point drift minimum, can continuously, exactly, promptly detect at whole piece track the address at the current place of locomotive.
The principle of work of the utility model device is:
First each yard of board perforate compiled to a unique code, this code is defined as a base address value, the coded message that reads each yard of board by read head device by laser-correlation type photoelectric sensor is again given ARM7 processor, so just obtain the base address value of locomotive, simultaneously when reading yard board correct coding information immediately by absolute value encoder zero clearing.Secondly absolute value encoder is arranged on the main axle of locomotive, when locomotive moves between code board, absolute value encoder is exported continuous digital quantity address value and is called sector address value, and ARM7 processor reads the sector address value between these yard of board by RS485 communication interface.Specific address value=base address value+sector address value of locomotive when locomotive forward travel, specific address value=base address-sector address value of locomotive when locomotive backward going.ARM7 processor can be uploaded address information by parallel uploading data interface or RS485 communication interface after handling these data to obtain final locomotive specific address value, also address information can be uploaded in profibus bus by profibus bus interface simultaneously.ARM7 processor also can drive chip IC 1, IC2 by address information Real time dynamic display by LED.
In Software for Design, adopted several different methods to improve processing speed and the accuracy of device, be mainly reflected in the following aspects:
During laser-correlation pipe scan code board, utilize external interrupt to gather signal, in coupling the max speed, also allow the reaction time of laser-correlation Guan Gengchang, effectively reduced error.Every inswept code board, program all can be preserved address corresponding up-to-date code board, and this address can be used as judging the reference of next address correctness, and when there is mistake, can carry out address prediction and work normally with assurance device.
In absolute value encoder when work,, program continuous recording data value several times, by the travel direction of big or small judgement locomotive, is considered as occurring mistake when difference is larger if occur, and abandons currency and be as the criterion with correct data of last time.What absolute value encoder was measured is two distances between code board, so again counting through code bridge queen zero clearing data immediately, avoid like this accumulation of error, has improved the accuracy of device.
Embodiment described in the utility model is only the description that preferred implementation of the present utility model is carried out; not the utility model design and scope are limited; do not departing under the prerequisite of the utility model design philosophy; various modification and improvement that in this area, engineering technical personnel make the technical solution of the utility model; all should fall into protection domain of the present utility model; the technology contents of the utility model request protection, has all been documented in claims.
Claims (7)
1. based on code board, identify the address detection device combining with absolute value encoder, it is characterized in that comprising address detection device, absolute value encoder, code board (1), read head (2), laser-correlation photoelectric sensor (3), wherein:
Vehicle-mounted part arranges read head (2) land station part a yard board (1) is set, and code board (1) is according to certain rule perforate, and a unique coding of every block code board sign, by the base address location information of this encoded recording locomotive; Read head (2) is provided with laser-correlation photoelectric sensor (3), and absolute value encoder is arranged on locomotive main wheel shaft, and when locomotive moves, absolute value encoder is along with main axle rotates the sector address of exporting digital quantity;
Described address detection device comprises power module, LED display section, parallel uploading data interface section, ARM7 processor part, RS485 communication interface part, power down save data module, reset and power-fail detection circuit part, Profibus-DP bus interface part, laser-correlation type photoelectric sensor readout code board coded message part.
2. the address detection device combining with absolute value encoder of identifying based on code board according to claim 1, is characterized in that having and being composed of two rounds on described code board (1), is coded message above, is clock hole corresponding to coded message below.
3. the address detection device combining with absolute value encoder of identifying based on code board according to claim 1, it is characterized in that described read head (2) is provided with two group six to the dynamic readout code trade mark of laser-correlation type photoelectric sensor, adopt two groups of photoelectric sensors to read respectively the code board coded message of locomotive when left lateral and right lateral.
4. the address detection device combining with absolute value encoder of identifying based on code board according to claim 1, it is characterized in that described locomotive continuation address obtains, adopt absolute value encoder to be arranged on the main axle of locomotive, absolute value encoder is along with main axle moves, by the real-time output locomotive address information of RS485 interface.
5. the address detection device combining with absolute value encoder of identifying based on code board according to claim 1, it is characterized in that described ARM7 processor is LPC2148 chip, the switching value that 2148 processors send by optocoupler U5 and U6 Real-time Collection laser sensor to a code board coded message, and by RS485 Real-time Obtaining locomotive address information, LPC2148 processor is through multiple code board coded message error handling processing, multiple address smoothing algorithm afterwards, obtain, after the information of locomotive final address, being uploaded to locomotive PLC.
6. the address detection device combining with absolute value encoder of identifying based on code board according to claim 1, it is characterized in that described parallel uploading data interface section, adopt latch U13, U14 and U15 to do three byte datas multiplexing, through optocoupler U3 and U4, do after level conversion again, by the specific address data upload of locomotive to PLC.
7. the address detection device combining with absolute value encoder of identifying based on code board according to claim 1, it is characterized in that described detection of power loss save data module, adopt MAX708 as detection of power loss chip, MAX708 inside carries a voltage comparator, by R86, R87 dividing potential drop, the branch pressure voltage causing when supply voltage, during lower than internal reference voltage 1.25V, voltage comparator is exported a negative edge at once, when LPC2148 processor collects this negative edge, by the information of required preservation, be saved in outside 24C02 immediately.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104748553A (en) * | 2015-04-01 | 2015-07-01 | 山东钢铁股份有限公司 | Furnace door positioning device for heating furnace |
| CN108151652A (en) * | 2016-12-05 | 2018-06-12 | 上海梅山钢铁股份有限公司 | Address coding plate displacement detector and detection method |
| CN108287551A (en) * | 2018-03-15 | 2018-07-17 | 马鞍山钢铁股份有限公司 | Based on route round-trip industrial locomotive running gear and method |
| CN109021986A (en) * | 2018-10-09 | 2018-12-18 | 鞍钢股份有限公司 | Accurate alignment judgment method for coke quenching car |
| CN109306270A (en) * | 2017-07-26 | 2019-02-05 | 宝山钢铁股份有限公司 | A kind of optimization alignment method of electric car at traction |
| CN110406550A (en) * | 2019-08-08 | 2019-11-05 | 安徽马钢张庄矿业有限责任公司 | A kind of locomotive positioner based on encoder |
| CN111139094A (en) * | 2020-02-28 | 2020-05-12 | 鞍钢股份有限公司 | Traveling anti-out-of-limit system of coke oven locomotive and control method |
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| CN111473721A (en) * | 2020-05-29 | 2020-07-31 | 山西捷立达自动化仪表有限公司 | Recognition device for positioning rail car based on code disc scanning and control method thereof |
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| CN104748553A (en) * | 2015-04-01 | 2015-07-01 | 山东钢铁股份有限公司 | Furnace door positioning device for heating furnace |
| CN108151652A (en) * | 2016-12-05 | 2018-06-12 | 上海梅山钢铁股份有限公司 | Address coding plate displacement detector and detection method |
| CN108151652B (en) * | 2016-12-05 | 2020-01-21 | 上海梅山钢铁股份有限公司 | Address coding board displacement detection device and detection method |
| CN109306270B (en) * | 2017-07-26 | 2021-02-19 | 宝山钢铁股份有限公司 | Optimal alignment method for electric car at traction position |
| CN109306270A (en) * | 2017-07-26 | 2019-02-05 | 宝山钢铁股份有限公司 | A kind of optimization alignment method of electric car at traction |
| CN108287551A (en) * | 2018-03-15 | 2018-07-17 | 马鞍山钢铁股份有限公司 | Based on route round-trip industrial locomotive running gear and method |
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| CN109021986A (en) * | 2018-10-09 | 2018-12-18 | 鞍钢股份有限公司 | Accurate alignment judgment method for coke quenching car |
| CN110406550A (en) * | 2019-08-08 | 2019-11-05 | 安徽马钢张庄矿业有限责任公司 | A kind of locomotive positioner based on encoder |
| CN111139093A (en) * | 2020-02-28 | 2020-05-12 | 鞍钢股份有限公司 | Anti-collision system of coke oven locomotive and anti-collision control method thereof |
| CN111139094A (en) * | 2020-02-28 | 2020-05-12 | 鞍钢股份有限公司 | Traveling anti-out-of-limit system of coke oven locomotive and control method |
| CN111473721A (en) * | 2020-05-29 | 2020-07-31 | 山西捷立达自动化仪表有限公司 | Recognition device for positioning rail car based on code disc scanning and control method thereof |
| CN111473721B (en) * | 2020-05-29 | 2024-06-07 | 山西捷立达自动化仪表有限公司 | Identification device for positioning railcar based on code wheel scanning and control method thereof |
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