CN100345739C - Intelligent method and device for controlling elevator based on distributed multipath CAN bus - Google Patents
Intelligent method and device for controlling elevator based on distributed multipath CAN bus Download PDFInfo
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- CN100345739C CN100345739C CNB200410012882XA CN200410012882A CN100345739C CN 100345739 C CN100345739 C CN 100345739C CN B200410012882X A CNB200410012882X A CN B200410012882XA CN 200410012882 A CN200410012882 A CN 200410012882A CN 100345739 C CN100345739 C CN 100345739C
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Abstract
The present invention relates to an intelligent method and a device for controlling elevators on the basis of a distributed multi-channel CAN bus, which comprises a cluster-control operating controller, main controllers respectively for each single elevator, cage controllers respectively for each elevator, a plurality of elevator calling controllers respectively for each floor of each elevator, liquid crystal display controllers respectively for each single elevator, and a speech floor reporting controllers respectively for each single elevator. The present invention is characterized in that In the communication of the cluster-control operating controller with the main controllers respectively for each single elevator, when a calling is registered by the main controllers respectively for each single elevator, a floor to be responded is primarily calculated by the controllers respectively for each single elevator, and then the calculated result is sent to the cluster-control operating controller; a calling response proposal is calculated out according to the current running conditions of all single elevators by the cluster-control operating controller and is distributed to the most reasonable elevator in time. As the present invention adopts a CAN bus technique of field buses, all controllers just need connecting by a pair of twisted pair wires through a network topological structure, and accordingly, an elevator control system can be flexibly and conveniently installed.
Description
Technical field
The invention belongs to a kind of apparatus for controlling elevator, is a kind of intelligent elevator control method and device based on distributed multi-channel CAN (control area net) bus specifically.
Background technology
Apparatus for controlling elevator is a quite complicated logic control system, system will detect, handle a hundreds of signal in the extremely short time, the system that adds has relatively high expectations to safety performance, make that the control and the management of elevator are quite complicated, existing domestic apparatus for controlling elevator great majority adopt the control core of PLC as elevator, every floor is carried out point-to-point control, further strengthened the complexity of elevator, brought many troubles for installation, debugging and the expansion of elevator.Adopt point-to-point connection mode between each floor of traditional apparatus for controlling elevator and the controller, each calling set all has a sets of data lines to link to each other with primary controller, when the elevator floor number was many, system just has the lot of data line to be needed to connect, make elevator installation, safeguard cumbersome.Particularly the control system of different numbers of floor levels needs the master controller that corresponding input and output count and is complementary, and commonality is poor, brings many inconvenience to production.Along with developing rapidly of computer hardware, software technology and integrated circuit technique, industrial control system has become most active in a computer technology application branch, and has obtained great advance, and outstanding behaviours is a large amount of utilizations of field bus technique.Fieldbus is the system that is applied in the production scene, realizes the digital communication of bidirectional linked list multinode between various microcomputer measurement control conveniences, is also referred to as the bottom control network of open, digitalisation, multi-point.Its appearance has brought many material benefits and convenient for the end user of automation system.
Summary of the invention
The technical problem to be solved in the present invention is: provide intelligent elevator control method and the device based on the distributed multi-channel CAN bus that only need a twisted-pair feeder bonded assembly highly versatile between a kind of primary controller and the all-calls device, to overcome above-mentioned deficiency.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: it comprises a team control arithmetic and control unit, the terraced master controller of each list, the elevator car of each elevator, each each stop of elevator some exhale terraced controller, the LCD controller of each single ladder, and the sound broadcast controller of each single ladder, be characterized in: the team control arithmetic and control unit is communicated by letter with each single terraced master controller, when one has calling to be registered by each single terraced master controller, the floor that each single terraced controller primary Calculation will respond, issue the team control arithmetic and control unit again, the team control arithmetic and control unit calculates best calling response scheme according to the current operation conditions of all single ladders, in time distribute to the most rational elevator, wherein:
Single terraced master controller is gathered safety signal, speed signal, cage position signal, the door system signal of each elevator in real time, receives each calling signal in real time, in real time each controller is sent message, the operation of control car and the motor-driven work of door;
Elevator car is gathered calling signal, weighing-up wave, driver's signal, maintenance signal, send the various status informations of car, calling information to single terraced master controller, elevator car also receives single terraced master controller information, be responsible for sound broadcast, show car place floor in real time, show the elevator faults state in real time,, the control that elevator car is also lighted or disannuled a call the button signal lamp;
Exhale terraced controller to gather calling signal, send the calling information of each floor, receive single terraced master controller information, show car place floor in real time, show the elevator faults state in real time to single terraced master controller;
LCD controller is responsible for the real time operation state of checking that elevator is all, dynamically arranges the elevator main controller memory variable, revises elevator operating mode;
The sound broadcast controller receives information and the failure message from the elevator place stop of CAN bus, calls out the stops or automatic speech alarming by speech chip control loudspeaker automatic speech then.
Above-mentioned each single terraced master controller has independently 3 road CAN bus communication networks, first via CAN bus is used for communicating by letter between group control system and each single terraced controller, the second road CAN bus is used for the information exchange of single terraced master controller and each landing call controller, and Third Road CAN bus is used for the singly information exchange of terraced master controller and elevator car, sound broadcast controller.
Above-mentioned team control arithmetic and control unit is specifically designed to calculate to be called out, and it has the Liquid Crystal Display (LCD) interface, has CAN bus network interface, has the USB interface with upper machine communication, and leaves Ethernet interface, can connect local area network, is used for remote monitor and control.
The terraced master controller of above-mentioned list adopts the framework of embedded microprocessor (comprising DSP) and CPLD (CPLD) collaborative work, embedded microprocessor (comprising DSP) is mainly used to finish the real-time processing of image data, computing and response, with communicating by letter between other microprocessor in the control system, the non-volatile preservation of voltage monitoring and data, CPLD (CPLD) has been realized the software implementation of hardware, strengthen the ability of embedded microprocessor visit peripheral hardware, at utmost expanded the I/O mouth of embedded microprocessor, CPLD sends input port information to embedded microprocessor by programmable data exchange logic module in the sheet, receive the control information that embedded microprocessor sends, output to peripheral interface through decoding logic module able to programme.
The terraced master controller of above-mentioned list has adopted the data power down to preserve circuit, the power supply voltage of master controller plate on the single terraced master controller of monitoring module monitoring of the data power down preservation circuit of single terraced master controller, when power supply voltage is lower than certain point, produce a level signal and give embedded microprocessor (MCU), MCU is transferred to series eeprom (EEPROM) with stored data by serial port after receiving this signal, after voltage recovers normally, MCU reads into the data that EEPROM preserves again by serial port again, and the content of the initial read-only series eeprom that powers on.
Flush bonding processor control ethernet (Internet) interface chip on the master controller of the terraced master controller of above-mentioned list, by Internet the inside info of master controller are sent out from Ethernet interface, upper computer sends instruction after receiving message, transfers back on the master controller by Internet again.
The terraced master controller of above-mentioned list leaves USB interface, be used for the communication of master controller and upper computer, flush bonding processor control USB interface chip on the master controller can directly be visited the master controller internal memory by USB mouth upper computer, monitors the mode of operation of flush bonding processor in real time.
The terraced master controller of above-mentioned list leaves the liquid crystal communication interface, is used for the communication of master controller and liquid-crystal controller, sends elevator operation information by the SCI serial communication interface to liquid crystal, and receives the control information that liquid-crystal controller is sent in real time
Above-mentioned elevator car is provided with floor extensibility circuit, carry out communication by one 24 double contact pin of pin and expansion board, each expansion board connects car plate or previous expansion board by one the 24 double socket of pin, reception is from the control signal of car plate, carry out communication by one the 24 double contact pin of pin and next piece expansion board then, each expansion board can be imported the button of 8 floors and the press key lamp of corresponding 8 floors of output, and each expansion board can also be provided with the button input of N 8 floors of control and lighting of press key lamp by wire jumper, N is provided with the button input of 16 floors and lighting of press key lamp on the car plate, so can choose a number arbitrarily from 3 to 8.
Above-mentioned sound broadcast controller is the independent optionally sound broadcast controller of tool, with the voice burning in the fixed address of speech chip, adopting a slice 8 8-digit microcontrollers (MCU) is core, seek the memory address of speech chip by the I/O mouth of microcontroller (MCU), pass through the control interface incoming signal of the I/O mouth of microcontroller (MCU) then to speech chip, thereby control the recording and the player function of respective memory unit, outside expansion CAN bus controller is used for the communication of CAN bus, receive the information that master controller is sent by the CAN bus, carry out sound broadcast or fault alarm.
Adopting between the terraced master controller of above-mentioned list and the LCD controller does not have the glitch-free communications protocol of conflicting, single terraced master controller and liquid-crystal controller use the serial asynchronous communication mode, single terraced master controller mode that has the initiative, liquid-crystal controller is in slave state, master controller sends a secondary data at set intervals, when liquid-crystal controller has request of data, automatically send request of data again after identification master controller data send a period of time that finishes, master controller is discerned automatically to respond after the transmission of liquid-crystal controller request signal finishes again and is sent data.
The present invention also provides a kind of intelligent elevator control setup based on distributed multi-channel CAN bus, it comprises a team control arithmetic and control unit, the terraced master controller of each list, the elevator car of each elevator, each each stop of elevator some exhale terraced controller, the LCD controller of each single ladder, and the sound broadcast controller of each single ladder, be characterized in: team control arithmetic and control unit and the terraced master controller of each list are by the total wire joint of CAN1, the terraced master controller of each list is by the elevator car of CAN2 bus and each elevator, the sound broadcast controller is connected, and the terraced master controller of each list also exhales terraced controller to be connected by the CAN3 bus with the some of each each stop of elevator.
The terraced master controller of above-mentioned list is connected and composed by embedded microprocessor (comprising DSP) and CPLD (CPLD), wherein:
Embedded microprocessor is connected with CPLD by bus, exhales terraced controller to be connected with the some of elevator car, sound broadcast controller and each stop of Ge Tai elevator of each elevator respectively by two CAN buses; Also be connected with Power Supply Monitoring signal and power down on the embedded microprocessor of single terraced master controller and preserve circuit; The embedded microprocessor of single terraced master controller is connected with analog quantity incoming signal and quadrature coding pulse incoming signal;
Complex programmable logic device (CPLD) links to each other with each input switch amount and exports control signal, and CPLD is output device chip selection signal and running state LED indicator signal also, and the reseting pulse signal of reset circuit.
Above-mentioned elevator car is made of microcontroller MCU1 and peripheral circuit, wherein: MCU1 is connected with single terraced master controller by the CAN2 bus, reception is called out incoming signal from the main order of single terraced master controller, MCU1 also is connected with several car expansion board, MCU1 receives the car status signal, and output car status shows signal and press key lamp shows signal, MCU1 also changes with string by switch power module respectively and device is connected with LED dot matrix display circuit.
Above-mentionedly exhale terraced controller to constitute by microcontroller MCU2 and peripheral circuit, wherein: microcontroller MCU2 is connected with single terraced master controller by the CAN3 bus, microcontroller MCU2 also respectively with the call button signal receiving inputted signal that is connected with floor toggle switch signalization, microcontroller MCU2 changes by string and control chip is connected with LED dot matrix display circuit.
Above-mentioned sound broadcast controller is made of microcontroller MCU3 and peripheral circuit, wherein: microcontroller MCU3 is connected with the CAN2 bus by the CAN bus controller, microcontroller MCU3 also is connected with pronounciation processing chip, has a switch power module power supply to be provided for respectively microcontroller MCU3 and pronounciation processing chip.
Above-mentioned LCD controller MCU4 links to each other with single terraced master controller by the SCI universal serial bus, the elevator operation information that real-time displaying monomer master controller is sent.LCD controller MCU4 links to each other with the button input, gathers each key-press status information in real time.
Be respectively arranged with Ethernet interface, USB interface and liquid crystal serial communication interface on above-mentioned team control arithmetic and control unit and the single terraced master controller.
Also be connected with Power Supply Monitoring signal and power down on the embedded microprocessor of the terraced master controller of above-mentioned list and preserve circuit.
Because the present invention adopts the CAN bussing technique of one of fieldbus, only needing a pair of twisted-pair feeder to connect by network topology structure between each controller gets final product, it is very convenient to install, control system for different numbers of floor levels only needs the terraced controller of exhaling of adding respective number in the CAN bus to get final product, and the primary controller hardware-software need not done any change.It is more flexible to make apparatus for controlling elevator install, convenient.
The present invention has the design of Distributed C AN bus network and rationalizes more; The multichannel CAN bus communication of greater security energy; The High Performance twin-core sheet collaborative work framework of master controller has the advance of high speed signal processing capacity, real-time response; The distinctive high security design of master controller (comprising the non-volatile preservation of voltage monitoring and data); The floor extensibility of elevator car; The sound broadcast function expanding module; Adopt serial communication to realize at a distance by LCDs and keyboard supervising system operation; Have remote monitor and control and diagnotic advance.Fact proved, whole apparatus for controlling elevator reliable operation, staff's installation, debugging, operation and easy to maintenance, convenient have reached good control effect.
The distributed elevator network control system design of the present invention with failure-free multichannel CAN universal serial bus technology, has realized between machine room, car, the station, the outgoing call Room serial data communication between each elevator of group control system; With terse modular design, each module has been optimized network architecture in the reasonable disposition network control system, has strengthened the function extended capability; Master controller adopts a kind of novel, control system structure embedded microprocessor (comprising DSP) and CPLD (CPLD) collaborative work framework efficiently, not only make system have High Performance, high-speed and reliability, and realized the miniaturized design of control system; The voltage monitoring module of master controller monitors the power supply voltage of master controller constantly, and when voltage drops to certain value, embedded microprocessor outputs to EEPROM by Serial Peripheral Interface (SPI) fast with stored data at once; Master controller is integrated with the USB interface chip, is used for the bus signals of flush bonding processor is converted to the USB rs 232 serial interface signal, sends to upper computer; The sound broadcast function of car is designed to extendible module, by the CAN bus exchanging data, makes system more flexible on function; Human-computer interaction function: liquid crystal display and Keyboard Control are designed to independently module, carry out data exchange by RS-232 or RS-485 bus and master controller, have strengthened the man machine communication function; Realized utilizing the running state of internet remote supervision system by the ethernet controller interface.Operation conditions of the present invention is reliable, stable.
Description of drawings
Fig. 1 is a structured flowchart of the present invention.
Fig. 2 is the single terraced master controller structured flowchart of the present invention.
Fig. 3 is the single terraced master controller network interface hardware circuit diagram of the present invention.
Fig. 4 is the network operation diagram of circuit of embedded microprocessor (comprising DSP) in the single terraced master controller of the present invention.
Fig. 5 is terraced controller architecture block diagram for the present invention exhales.
Fig. 6 is an elevator car structured flowchart of the present invention.
Fig. 7 is a car expansion board constructional drawing of the present invention.
Fig. 8 is sound broadcast controller architecture figure of the present invention.
Fig. 9 is a liquid-crystal controller constructional drawing of the present invention.
Figure 10 is a liquid crystal communications protocol diagram of circuit of the present invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples, but this embodiment should not be construed as limitation of the present invention.
Base portion structure of the present invention as shown in Figure 1, base portion of the present invention by single terraced master controller, elevator car, sound broadcast controller, exhale parts such as terraced controller and LCD controller to form, other each parts pass through dcs of CAN bus composition except that liquid crystal; Each master controller comprises 3 road CAN interface controllers, can realize independently three road CAN bus communication functions: first via CAN bus is as communication between single terraced master controller in the group control system; The second road CAN bus is as the communication of single terraced master controller and elevator car, car expansion board and sound broadcast controller; Third Road CAN bus is as single terraced master controller and exhale communication between the terraced controller.Adopt such design plan to optimize the CAN bus network, improved the accuracy of traffic rate and data, realized the modularization of apparatus for controlling elevator, make total system terse, clear.
Single terraced master controller structure has adopted a kind of novel, embedded microprocessor (comprising DSP) and CPLD (CPLD) collaborative work framework efficiently as shown in Figure 2.Characteristics such as data processing speed is fast because embedded microprocessor (comprising DSP) has, operating characteristic is stable, integrated degree height, in design, be mainly used to finish real-time processing, computing and the response of data, communicate by letter with the LAN data between other microprocessor in the control system, I/O (I/O) Signal Processing, the non-volatile preservation of Power Supply Monitoring and data; And CPLD (CPLD) is to use special IC very widely, characteristic such as have the integrated level height, work speed is fast and online programming is convenient, so the ability in that system design adopted CPLD can strengthen DSP visit peripheral hardware realizes the interior sequential logical circuit of expansion, sheet of programmable I/O mouth and the chip selection signal that combinational logic circuit design, input buffering, output drove and produced other device; CPLD sends input port state information to DSP by programmable data exchange logic module in the sheet, receives the control information that DSP sends, and is directly finished by the FPGA (Field Programmable Gate Array) processing module in CPLD for part input in the system, output logic relation.Embedded microprocessor technology and the combination of CPLD technology actv., but make master controller have static state overprogram and dynamic characteristic at system reconfiguration, hardware design is revised by programming as software, design-calculated alerting ability and commonality have so just been improved greatly, and realized highly integratedly, improved running velocity and reliability.
The prepreerence requirement of single terraced master controller is exactly a stability, and for the situation of the program " race flies " that prevents chip takes place, watchdog circuit design exclusive on single terraced master controller has strengthened the elevator main controller anti-jamming capacity greatly.As shown in Figure 2, under normal operation, embedded microprocessor (comprising DSP) produces a kind of impulse singla through computing within the chip timing section that resets, this impulse singla inputs to CPLD (CPLD), pass through the conversion of programmed logical module in the CPLD sheet again, produce the required reseting pulse signal of watchdog circuit before having counted in the time meter time in the chip that resets, input to the chip that resets, make the time meter of the chip that the resets counting again that resets.Any one work mal of MCU and CPLD can cause that all watchdog circuit produces reset signal.
For making single terraced master controller preserve stored data under power-down conditions, the voltage monitoring module is monitored the power supply voltage of single terraced master controller plate constantly.As shown in Figure 2, the voltage monitoring chip produces the I/O mouth that a level signal is given embedded microprocessor when power supply voltage is lower than certain point, when MCU monitors this I/O mouth when being low level, the MCU power supply voltage fall be lower than minimum before, rapidly stored data is transferred to series eeprom (EEPROM) by Serial Peripheral Interface (SPI).After voltage recovered normally, MCU read into the data that EEPROM preserves again by the serial peripheral mouth again, and the content of the initial read-only series eeprom that powers on.
Single terraced master controller is realized network data communication by embedded microprocessor (comprising DSP) Control Network control chip.Constitute net control terminal jointly based on embedded microprocessor (comprising DSP) and network control chip, utilize UDP (User Datagram Protocol), ARP (address resolution protocol) in the ICP/IP protocol and simple application layer protocol successfully to realize interconnection between embedded microprocessor and the ethernet network, both improved the speed of data transmission, guarantee the correctness of data transmission again, also expanded the effective radius of data transmission simultaneously.
Single terraced master controller network interface hardware design circuit as shown in Figure 3, the power supply of general digital signal processor DSP is 3.3V, and the power supply of network control chip is 5V, the bidirectional drive that therefore need add a slice 3.3V power supply between the bi-directional data mouth of two kinds of chips is as level conversion, because DSP can not bear the voltage of 5V, and the bidirectional drive of 3.3V power supply can bear the voltage of 5V.The transmission direction of bidirectional drive control pin is controlled by the selected pin of the W/R Writing/Reading of DSP, when it writes data to network control chip during for high level, during low level from the network control chip read data.The 16 bit address lines of DSP and 16 position datawires are buses separately, and 20 bit address lines of network control chip and 16 bit data also are buses separately, therefore select 8 I/O Memory Mapping of network control chip.That is to say 5 bit address lines and 8 position datawires that only need use DSP, 32 inner eight bit registers that just can the accesses network control chip visit the 16KB internal SRAM of network control chip then by these 32 eight bit registers.The external memory storage of DSP is divided into program's memory space, data memory space, I/O addressing space, difference corresponding PS, DS, IS chip selection signal, when a plurality of bus peripheral hardware, can select DS or IS, decipher the address enable pin AEN of sheet network selection network control chip with A wire.If have only bus peripheral hardware of network control chip, with the direct ground connection of AEN.
Embedded microprocessor (comprising DSP) to the operating process of network control chip as shown in Figure 4, embedded microprocessor (comprising DSP) is mainly finished the packing that unpacks of data.Come from network control chip as data, embedded microprocessor is analyzed data packet, if ARP (physical address parsing) data packet, then program changes the ARP handler over to.If IP data packet and transport layer are used udp protocol, after data unpack, data are preserved.Otherwise, if embedded microprocessor has data to send, then data are packed according to the udp protocol form, send into network control chip, by network control chip data are outputed in the local area network.
Exhale terraced controller architecture figure as shown in Figure 5, exhale terraced partial function fairly simple, system adopts the single-chip microprocessor MCU 2 of 8 of a slices to realize its function.For support system has a pure working power, adopted a DC/DC power module industry+24V voltage transition one-tenth+5V power supply in the system, promptly played voltage transitions, played the jamproof effect of isolating again.For display circuit, because luminous element adopts LED as read out instrument, consumption of power is bigger, in order not strengthen the power burden of DC/DC module, therefore the display part adopts switch power module that power supply is provided, the display part for fear of the interference between the different electrical power, has adopted high-speed photoelectric coupler 6N137 to isolate with adopting serial communication mode to carry out the exchange of data between the CPU.Because 8 single-chip microprocessor MCU 2 inside do not have the CAN bus controller, therefore need outside expansion CAN bus controller to be used for the communication of CAN bus.
The elevator car constructional drawing as shown in Figure 6, elevator car is analyzed, is handled the car incoming signal because switching value signal to be processed is more, in real time state value is sent to master controller, receive data from master controller simultaneously, be used to show elevator information.Can adopt two kinds of design plans: a kind of is to adopt the low MCU1 of a slice integrated level, realizes desired function by external expansion interface, and this scheme can reduce cost of product; The performance-oriented MCU1 that a kind of is employing a slice high integration, the Peripheral Interface function is many is that core designs circuit, and this scheme can realize real-time, high-speed, but cost of product can increase to some extent.Can choose as the case may be two kinds of schemes.
Elevator car of the present invention has designed distinctive expanded function, as shown in Figure 7, carries out communication by one 24 double contact pin of pin and expansion board.Each expansion board connects car plate or previous expansion board by one the 24 double socket of pin, receives the control signal from the car plate, carries out communication by one the 24 double contact pin of pin and next piece expansion board then.24 pin signals comprise the power supply of chip enable signal, data latch signal, bus signals and expanding surface chip on board from elevator car.Also have the double contact pin of two 12 pins that the expansion of discerning N 8 floors with wire jumper (two pin wire jumpers) is provided on the control panel of expansion board.Because the car plate is provided with the button input of 16 floors and lighting of press key lamp, so N can choose a number arbitrarily from 3 to 8.
At first after wire jumper is chosen N 8 floors, expansion board input to bus (bus that connects elevator car by the double contact pin of 24 pins) by key input signal by the two-way three-state door of expansion board, elevator car is received push button signalling by bus interface, produce calling signal through computing and issue single terraced master controller, send the signal of lighting of press key lamp simultaneously from bus, (bus that is connected elevator car by the double contact pin of 24 pins) outputs on the latch of expansion board.The enable signal of two-way three-state door and latch and the latch signal of latch are all drawn by the elevator car computing, send on the expansion board from the double contact pin of 24 pins of the bus that connects elevator car, and to select these two kinds of signals by the wire jumper of two the 12 double contact pins of pin are the expansion board that are used for controlling which 8 floors.
The sound broadcast controller is designed to an independently module with the sound broadcast function as shown in Figure 8, mainly is to make this function have washability for system, and works alone and can improve running velocity and reliability.Controller also is to adopt a slice 8 8-digit microcontrollers (MCU3) to be core, and outside expansion CAN bus controller is used for the communication of CAN bus, and the employing switch power module increases the power-handling capability to loud speaker.Conventional speech chip control interface has/CE, PD ,/EOM, P/R or the like.Speech chip is realized by the I/O mode.Come memory address addressing by micro controller I/O mouth to the ISD2590 chip, and with the sequential of micro controller I/O mouth analog interface signal.
During recording earlier with speech chip /the CE end puts height, the P/R end is put low, imports memory address then and the PD end is put low, begins recording then, behind the End of Tape again general/CE hold and put height.So just finished the work of once recording.If record length is long, when chip was in the storage space end, the pulse of/OVF end output low level was represented to overflow, and the local terminal state is followed/state of CE end afterwards, uprises up to the PD end.During playback earlier general/CE end put height, the P/R end is put height, imports memory address then and the PD end is put low, begins playback then, after playback finishes again general/CE hold and put height.So just finished a playback job.
The liquid-crystal controller constructional drawing as shown in Figure 9, for making liquid crystal display rapid flexibly, the core of liquid-crystal controller adopts 16 embedded microprocessors, gathers keyboard input signal in real time, receive in real time information by serial interface, and send control signal by serial ports from single terraced master controller.
Single terraced master controller and liquid crystal adopt half duplex operation serial asynchronous communication mode, for preventing between master controller and liquid-crystal controller to take place to send simultaneously the situation of information, cause bus collision, we take synchronization only to allow a treater to send out the communication protocol of message on the order wire, busy by the automatic identification communication line of treater.Single terraced master controller mode that has the initiative, liquid-crystal controller is in slave state, the communication subroutine flow chart of liquid-crystal controller as shown in Figure 10, the conflict that actv. has sent when having avoided information of same.
The content that is not described in detail in the specification sheets of the present invention belongs to this professional domain technical personnel known prior art.
Claims (13)
1, a kind of intelligent elevator control method based on distributed multi-channel CAN bus, it comprises a team control arithmetic and control unit, the terraced master controller of each list, the elevator car of each elevator, each each stop of elevator some exhale terraced controller, the sound broadcast controller of each single ladder, and the LCD controller of each single ladder, it is characterized in that: the team control arithmetic and control unit is communicated by letter with each single terraced master controller, when one has calling to be registered by each single terraced master controller, the floor that each single terraced controller primary Calculation will respond, issue the team control arithmetic and control unit again, the team control arithmetic and control unit calculates best calling response scheme according to the current operation conditions of all single ladders, in time distributes to the most rational elevator, wherein:
Single terraced master controller is gathered the various status signals of each elevator in real time, receives the calling signal of other controller in real time, in real time each controller is sent message, controls the action of other controller;
Elevator car is gathered calling signal and various car status signal, send the various status informations of car, calling information to single terraced master controller, elevator car also receives single terraced master controller information, be responsible for sound broadcast, show car place floor in real time, show elevator faults state, the control that elevator car is also lighted or disannuled a call the car button signal lamp in real time;
Exhale terraced controller to gather calling signal, send the calling information of each floor, receive single terraced master controller information, show car place floor in real time, show the elevator faults state in real time to single terraced master controller;
The sound broadcast controller receives information and the failure message from the elevator place stop of CAN bus, calls out the stops or automatic speech alarming by speech chip control loudspeaker automatic speech then;
LCD controller is responsible for the real time operation state of checking that elevator is all, dynamically arranges the elevator main controller memory variable, revises elevator operating mode.
2, the intelligent elevator control method based on distributed multi-channel CAN bus as claimed in claim 1, it is characterized in that: each single terraced master controller has independently 3 road CAN bus communication networks, first via CAN bus is used for communicating by letter between group control system and each single terraced controller, the second road CAN bus is used for the information exchange of single terraced master controller and each landing call controller, and Third Road CAN bus is used for the singly information exchange of terraced master controller and elevator car, sound broadcast controller.
3, intelligent elevator control method based on distributed multi-channel CAN bus as claimed in claim 1 or 2, it is characterized in that: single terraced master controller adopts the framework of embedded microprocessor and CPLD collaborative work, embedded microprocessor is mainly used to finish the real-time processing of image data, computing and response, with communicating by letter between other microprocessor in the control system, the non-volatile preservation of voltage monitoring and data, CPLD has been realized the software implementation of hardware, strengthen the ability of embedded microprocessor visit peripheral hardware, at utmost expanded the I/O mouth of embedded microprocessor, CPLD sends input port information to embedded microprocessor by programmable data exchange logic module in the sheet, receive the control information that embedded microprocessor sends, output to peripheral interface through decoding logic module able to programme.
4, intelligent elevator control method based on distributed multi-channel CAN bus as claimed in claim 1 or 2, it is characterized in that: single terraced master controller has also adopted the data power down to preserve circuit, the power supply voltage of master controller plate on the single terraced master controller of monitoring module monitoring of the data power down preservation circuit of single terraced master controller, when power supply voltage is lower than certain point, produce a level signal and give embedded microprocessor, embedded microprocessor is transferred to series eeprom with stored data by serial port after receiving this signal, after voltage recovers normally, embedded microprocessor is read into again by the data that serial port is preserved erasable programmable read only memory again, and the content of the initial read-only series eeprom that powers on.
5, intelligent elevator control method based on distributed multi-channel CAN bus as claimed in claim 1 or 2, it is characterized in that: have independent optionally sound broadcast controller, with the voice burning in the fixed address of speech chip, adopting a slice 8 8-digit microcontrollers is core, seek the memory address of speech chip by micro controller I/O mouth, then by the control interface incoming signal of micro controller I/O mouth to speech chip, thereby control the recording and the player function of respective memory unit, outside expansion CAN bus controller is used for the communication of CAN bus, receive the information that master controller is sent by the CAN bus, carry out sound broadcast or fault alarm.
6, intelligent elevator control method based on distributed multi-channel CAN bus as claimed in claim 1, it is characterized in that: have independent optionally LCD controller, adopt between single terraced master controller and the LCD controller and do not have the glitch-free communications protocol of conflicting, single terraced master controller and liquid-crystal controller use the serial asynchronous communication mode, single terraced master controller mode that has the initiative, liquid-crystal controller is in slave state, master controller sends a secondary data at set intervals, when liquid-crystal controller has request of data, automatically send request of data again after identification master controller data send a period of time that finishes, master controller is discerned automatically to respond after the transmission of liquid-crystal controller request signal finishes again and is sent data.
7, a kind of intelligent elevator control setup based on distributed multi-channel CAN bus, it comprises a team control arithmetic and control unit, the terraced master controller of each list, the elevator car of each elevator, each each stop of elevator some exhale terraced controller, the sound broadcast controller of each single ladder, and the LCD controller of each single ladder, it is characterized in that: team control arithmetic and control unit and the terraced master controller of each list are by the total wire joint of CAN1, the terraced master controller of each list is by the elevator car of CAN2 bus and each elevator, the sound broadcast controller is connected, and the terraced master controller of each list also exhales terraced controller to be connected by the CAN3 bus with the some of each each stop of elevator.
8, the intelligent elevator control setup based on distributed multi-channel CAN bus as claimed in claim 7 is characterized in that: single terraced master controller is connected and composed by embedded microprocessor and CPLD, wherein:
Embedded microprocessor is connected with CPLD by bus, exhales terraced controller to be connected with the some of elevator car, sound broadcast controller and each stop of Ge Tai elevator of each elevator respectively by two CAN buses; Also be connected with Power Supply Monitoring signal and power down on the embedded microprocessor of single terraced master controller and preserve circuit; The embedded microprocessor of single terraced master controller is connected with analog quantity incoming signal and quadrature coding pulse incoming signal;
CPLD links to each other with each input switch amount and exports control signal, and CPLD is output device chip selection signal and running state LED indicator signal also, and the reseting pulse signal of reset circuit.
9, intelligent elevator control setup based on distributed multi-channel CAN bus as claimed in claim 7, it is characterized in that: elevator car is made of microcontroller and peripheral circuit, wherein: microcontroller is connected with single terraced master controller by the CAN2 bus, reception is from the elevator operation signal of single terraced master controller, microcontroller receives car status and the main calling signal that makes, and output car status shows signal and press key lamp shows signal, microcontroller also changes by string respectively and device is connected with LED dot matrix display circuit, elevator car leaves the floor expansion interface, be connected with expansion board by a double contact pin, each expansion board is connected with next expansion board by a double socket, until the 7th expansion board, and each expansion board is discerned by wire jumper.
10, the intelligent elevator control setup based on distributed multi-channel CAN bus as claimed in claim 7, it is characterized in that: exhale terraced controller to constitute by microcontroller and peripheral circuit, wherein: microcontroller is connected with single terraced master controller by the CAN3 bus, microcontroller also respectively with the call button signal receiving inputted signal that is connected with floor toggle switch signalization, microcontroller changes by string and control chip is connected with LED dot matrix display circuit, exhales on the microcontroller of terraced controller and also is connected with an external house dog and reset circuit.
11, the intelligent elevator control setup based on distributed multi-channel CAN bus as claimed in claim 7, it is characterized in that: the independent optionally sound broadcast controller of tool, the sound broadcast controller is made of microcontroller and peripheral circuit, wherein: microcontroller is connected with the CAN2 bus by the CAN bus controller, microcontroller also is connected with pronounciation processing chip, has a switch power module power supply to be provided for respectively microcontroller and pronounciation processing chip.
12, the intelligent elevator control setup based on distributed multi-channel CAN bus as claimed in claim 7, it is characterized in that: the independent optionally LCD controller of tool, LCD controller links to each other with single terraced master controller by the SCI universal serial bus, show the elevator operation information that single terraced master controller is sent in real time, LCD controller links to each other with the button input, gathers keyboard input information in real time.
13, as claim 7 or 8 described intelligent elevator control setups, it is characterized in that: be respectively arranged with Ethernet interface, USB interface and liquid crystal serial communication interface on team control arithmetic and control unit and the single terraced master controller based on distributed multi-channel CAN bus.
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| CNB200410012882XA CN100345739C (en) | 2004-03-22 | 2004-03-22 | Intelligent method and device for controlling elevator based on distributed multipath CAN bus |
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| CNB200410012882XA CN100345739C (en) | 2004-03-22 | 2004-03-22 | Intelligent method and device for controlling elevator based on distributed multipath CAN bus |
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