CN101267526A - Multimedia information interaction control system for elevator box - Google Patents
Multimedia information interaction control system for elevator box Download PDFInfo
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- CN101267526A CN101267526A CNA2007100584262A CN200710058426A CN101267526A CN 101267526 A CN101267526 A CN 101267526A CN A2007100584262 A CNA2007100584262 A CN A2007100584262A CN 200710058426 A CN200710058426 A CN 200710058426A CN 101267526 A CN101267526 A CN 101267526A
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Abstract
The invention relates to the field of elevator technology, particularly to a multimedia information interactive control system in an elevator cage, comprising a multimedia controller, a liquid crystal controller, a color liquid crystal screen and a layer-selecting controller, the multimedia controller consists of a first microprocessor, a main memory and a serial communication interface communicating with the layer-selecting controller, wherein the main memory is provided with a frame buffer; the liquid crystal controller is connected with the first microprocessor, consists of programmable logic device for controlling sequential logic, a display memory and a liquid crystal driving chip, a mapping relation is established between the frame buffer and the display memory through the first microprocessor, the read and write operations to the frame buffer by the first microprocessor is directly related to the liquid crystal screen; the first microprocessor is installed with a frame buffer equipment driver and a graph application based on an embedded operating system platform. On the one hand, the multimedia information interactive control system provided by the invention provides a platform for releasing information, on the other hand, provides a good human-computer interaction platform for the safe auxiliary device of an intelligent elevator.
Description
Technical field
The present invention relates to the elevator technology field, related in particular to a kind of multimedia information interaction control system for elevator box.
Background technology
Car inner multimedia information interaction control system mainly is responsible for report, the man-machine interaction of multimedia messages, is the main carrier that point-to-point information interaction exchanges.Traditional lift car inner multimedia information spinner will be propagated in the mode of dull and stereotyped LCD TV, throw in television advertising at the office building that the crowd concentrates, therefore, be subjected to the favor of some multimedia liquid crystal manufacturing companies always, industry generally acknowledges that outstanding is the high brightness elevator liquid crystal LCD of fraternal brother company production, the transmission of the signal of this LCD is based on video and audio cable, is characterized in that antijamming capability is strong, image quality is high, reliable and stable.In addition, obtained widespread usage in the visible dialogue system intelligent building abroad in conjunction with liquid crystal LCD, the domestic joint elevator producer of part also begins to have released this series products one after another as Shanghai Mitsubishi, giant's concerted effort, Guangzhou Hitachi, Thyssen etc. in recent years.Use with regard to the market before the present invention, multimedia interactive control system in the lift car, the main simulation LCD TV of using transmission cable, CRT monitor and based on the application of the built-in multimedia equipment of wired or wireless network and digital LCD, as Shanghai Mitsubishi.Though the former technology is ripe more, the project cost cost is higher relatively, and the man-machine interaction performance is relatively poor; And the latter's antijamming capability is strong, advanced technology, is in the research and development stage, and the rising space is very big.Existing elevator multimedia interactive control system commonly used is unsuitable for the requirement of following elevator intelligent development.
In order to make car inner multimedia information interaction control system, have the demonstration of the inner floor information of lift car, the collection of elevator push button signal, indicator lamp of elevator function such as light, intersection control routine also should comprise a choosing layer controller in the lift car.
Increase along with the dwelling house number of plies, corresponding change also takes place in the specification of elevator choose layer button, electrical standard, the mode of connection, this just requires car choosing layer controller under the prerequisite that does not increase the circuit board volume, should expand more peripheral interface, guarantees the terseness and the ease for maintenance of circuit again.In addition, the designer also requires car choosing layer controller to have adaptability and reconfigurability for the variation of business in the development phase or even when changing at the scene.According to disclosed documents and materials, before the present invention, domestic and international each big elevator manufacturer, as Austria this, the lift car choosing layer controller of Mitsubishi etc. generally adopt discrete digital device to make, this has not only increased the complexity of the interface circuit and the mode of connection, make reliability be subjected to influence, also increased maintenance difficulties.Select layer controller to be unsuitable for the requirement of following elevator development in the existing lift car commonly used.
Summary of the invention
The objective of the invention is at present situation, the man-machine interaction performance relatively poor defective of existing using escalator environment facies, for elevator provides a kind of interaction of multimedia information control device dullness.On the one hand can provide a platform that releases news, also can become the safe servicing unit of intelligent elevator on the other hand, the good man-machine interaction platform is provided for property and advertising company.
For this reason, the present invention adopts following technical scheme:
A kind of multimedia information interaction control system for elevator box comprises multimedia controller, liquid-crystal controller and color LCD screen, choosing layer controller.Described multimedia controller comprise first microprocessor, main memory, with choosing layer controller between the serial communication interface of communicating by letter, described main memory has been opened up frame buffer zone; Described liquid-crystal controller links to each other with first microprocessor, comprise the programmable logic device, video memory and the lcd drive chip that are used for the control timing logic, described frame buffer zone is by establishing the mapping corresponding relation between first microprocessor and the video memory, first microprocessor is directly linked to liquid crystal display screen to the read-write operation of frame buffer zone; Described first microprocessor is equipped with based on frame buffer zone device driver and graphics application program under the embedded control system platform, and obtain an elevator operation information from choosing layer controller by serial communication interface, to realize interaction of multimedia information control.
Above-mentioned multimedia information interaction control system for elevator box, described first microprocessor can be arm processors.
Above-mentioned intersection control routine, described choosing layer controller can be by constituting with lower member: comprise the second microprocessor control module, as association's processing unit of second microprocessor and coupled programmable logic device control module, display module, key-press module, be used for the serial port module of communicating by letter between second microprocessor and the multimedia controller and be used for communicating by letter between second microprocessor and the core controller, thereby obtain the CAN bus communication module of elevator operation information; Described programmable logic device links to each other with key-press module with a matrix LED display module respectively, be used for the output information that transmits according to second microprocessor, control point matrix LED display module, realize the demonstration of floor traffic direction, floor information, and be used to realize to elevator push button scanning, decipher and go and tremble, and send key information to microprocessor.Preferably also be provided with indicator light on the button of building floor choosing device, the programmable logic device control module is controlled the light on and off of respective keys indicator light according to the light on and off control information to each button indicator light of microprocessor output.
Above-mentioned multimedia information interaction control system for elevator box can also be provided with ethernet module on the multimedia controller.
Choosing layer controller in the intersection control routine of the present invention has following marked improvement:
(1) the present invention is directed to functional requirement and the concrete application scenario that lift car inner multimedia information interaction is controlled, designed the software and hardware of multimedia information interaction control system, the multimedia graphical display technics in built-in Linux field is applied to lift car inside, brings into play the advantage of embedded system in the multimedia field with this.
(2) the present invention adopts the mode of mapped system main memory, all be directly linked to any visit to this section main memory in the application program on the liquid crystal display screen by frame buffer zone, all fall the operation of the bottom hardware of LCDC is all abstract, and be simplified to arm processor read-write operation to system hosts SDRAM in the virtual address space of Linux, thereby simplified the read-write operation of multimedia controller, saved the development time of intersection control routine application program.
(3) a choosing of the present invention layer controller utilizes CPLD hardware to realize data processing, realizes that with software data processing compares with traditional MCU, and the concurrent processing ability of this hardware has embodied stronger real-time control ability and higher system reliability; And owing to adopt CPLD, omitted analog elements such as many resistance, electric capacity, compared with screening device in the traditional elevator, under the situation of equal number device, the physical space that this scheme takies obviously reduces.
(4) flexibility of CPLD makes it the adaptive design that realization can be not out-of-date in product, has reconfigurability.It can repeatedly use same design along with the appearance of new product demand, allows the designer in the development phase or even change at the scene, makes product have long life cycle.Reduce the cost of each link simultaneously, shorten the development time, improved efficient.
In a word, the present invention lays a good foundation for systematic research of intelligent building intelligent elevator and development, for the industrialization of domestic intelligent elevator control is got ready.Multimedia interactive control system of the present invention has application value preferably, and it not only can provide more comprehensively for following intelligent elevator, dynamic multimedia function.
Description of drawings
The hardware connection layout of Fig. 1 multimedia interactive control system;
The hardware structure diagram of Fig. 2 multimedia controller core board;
The hardware structure diagram of Fig. 3 multimedia controller peripheral board;
Fig. 4 selects the hardware structure diagram of layer controller;
Fig. 5 selects the sheet choosing of layer each module of controller CPLD;
Fig. 6 selects the realization of some matrix LED scan module in layer controller CPLD;
Fig. 7 selects a layer controller keyboard scan modular circuit;
Fig. 8 selects 74373 latchs of realizing press key lamp control in layer controller.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
The present invention is directed to the functional requirement and the concrete application scenario of the control of lift car inner multimedia information interaction, the multimedia graphical display technics in built-in Linux field is applied to lift car inside, bring into play the advantage of embedded system with this, and designed the software and hardware of multimedia information interaction control system in the multimedia field.Referring to Fig. 1, this intersection control routine is made up of multimedia controller, choosing layer controller, liquid-crystal controller LCDC and color LCD screen.Multimedia controller adopts the structure of core board expansion peripheral board, being based on 32 the technical grade microprocessors of ARM9 stone and the embedded system typical case of self-designed L inux operating system uses, as shown in Figures 2 and 3, comprise the FLASH of SDRAM, 16M of 64M and one road CAN bus transceiver module, one road ethernet communication module and two-way RS232 serial communication modular and JTAG debugging interface and LCD liquid-crystal controller interface, audio extend circuit, the DATA FLASH expanded circuit by the SPI interface.The present invention has developed frame buffer zone Framebuffer device driver and graphics application program under the ARM-Linux platform for multimedia controller, has enriched the Presentation Function of liquid crystal display screen, for intelligent elevator has made up a comprehensive digital human-computer interaction platform.
In addition, owing to do not have the liquid crystal display screen controller in the flush bonding processor sheet of selecting for use, so for drive TFT LCD color LCD screen, we have also developed independently liquid crystal display screen controller LCDC, its function is that the data-signal that processor on the multimedia controller is exported is carried out level conversion, drive liquid crystal display screen in LVDS low-voltage differential data-signal mode, the liquid crystal display screen controller principle as shown in Figure 4.Be standard MCU interface between LCDC and the multimedia controller, this interface definition 16 pins, wherein 8 is data/address bus, 3 control buss, 5 electrical cables.The interface of LCDC and liquid crystal display screen is a LVDS low-voltage differential data-signal, has defined 20 pins, and wherein 8 is the LVDS holding wire in RGB three-primary colours and clock source, and all the other are electrical cable.LCDC inside is made up of CPLD, the built-in video memory of 512k byte and the LVDS chip for driving of a slice control timing logic.The major parameter of the colored TFT liquid crystal display screen of Shi Yonging is in the present invention: 8.4 inches of specifications, support 800 * 600 display resolutions, 256 looks, TFT be coloured silk very, 1 passage LVDS interface, power supply is to have 800 * 600 picture elements on 3.3V, the liquid crystal display screen, and each o'clock is by a byte representation.
Through experiment showed, the mentality of designing of this Framebuffer driver, be suitable for all not with built-in video memory and the liquid crystal display screen controller LCDC that can not shine upon built-in video memory.
The key technology of multimedia controller design frame buffer zone driver is exactly to distribute video memory for liquid crystal display, having adopted the mode of mapped system main memory among the present invention, is the continuous memory space of 512K byte virtual address for Framebuffer opens up a segment length in the system hosts SDRAM of multimedia controller.The design philosophy of frame buffer zone device driver can be sketched and be: all fall the operation of the bottom hardware of LCDC is all abstract with multimedia controller, and be simplified to arm processor read-write operation to system hosts SDRAM in the virtual address space of Linux, that is to say, with resolution is that to be abstracted into length be 800 for 800 * 600 liquid crystal display screen LCD, width is 600 rectangular coordinate system, each coordinate points has wherein been represented a picture element on the liquid crystal display screen, and this coordinate system corresponding again be one section continuous memory space of first address in the SDRAM with fbp, so any visit to this section main memory in application program all has been directly linked on the liquid crystal display screen, any operation also will directly be reflected on the liquid crystal LCD, can think that the video memory of LCDC has been mapped to user's space by using the FrameBuffer driver.Mapping relations are to finish by the file layers of frame buffer zone and Drive Layer file, and Drive Layer is responsible for opening up memory space in system hosts, and this memory space is associated with on the video memory of LCDC, and all bottom hardware relevant with liquid crystal display screen operations; File layers then is responsible for providing to application program, to the operation-interface api function as the system hosts of frame buffer zone.
The present invention at first can be connected to by the CAN bus transceiver module in the multimedia controller in the inside CAN network of elevator, also can link to each other with choosing layer controller in the lift car and then obtain the running state information of elevator by the RS232 serial communication modular, can also be with choosing layer controller as the human-machine interface oralia, to realize the human-computer interaction function of this multimedia messages platform.Use the multimedia display technology in built-in Linux field on based on the multimedia controller of 32 arm processor frameworks, enriched LCD Presentation Function, make display effect more bright and colourful, under the support of frame buffer zone device driver, software development and hardware designs are separated from each other, reduced the difficulty of software development, liquid crystal display screen display application procedure development person does not again spend the operation of being concerned about bottom hardware and understands the LCDC register.Allow to transplant the graphic user interface such as the MicroWindows of built-in field, MiniGUI or Qt-Embedded can allow the designer just design satisfactory operation display interface in a short period of time.Simultaneously, also allow to transplant such as built-in multimedia video jukebox software such as MPlayer, broadcast short films on LCD has enriched the media entertainment function in the lift car.Multimedia messages in the lift car often has jumbo storage demand, it can be stored among the DATAFLASH of multimedia controller, its operating voltage is 2.7V～3.6V, maximum clock frequency is 20MHz, and erasable 10,000 times, data can be preserved 10 years.In addition, other auxiliary units in the lift car as the safety detection unit etc., can be connected on another road RS232 serial ports of multimedia controller, for the passenger provides multimedia interactive information.
Choosing layer controller in the car is the communication interface between car internal information and the outside elevator CAN network, exhales terraced task by finishing microcontroller (MCU) and common cooperation of programmable logic device (CPLD).
Referring to Fig. 4, the choosing layer controller in the present embodiment is made up of MCU control unit, CPLD control unit, dot matrix led display unit, button collecting unit, CAN bus communication unit, serial communication unit.CPU is used to control serial port module and multimedia controller, and CAN communication module and core controller (core controller is for multimedia interactive control system of the present invention, it is external devices, be used for being responsible for the operation logic, supervisory communications interface of control elevator etc.) between packet sending and receiving, obtain elevator operation information, and carry out application program of user.Choosing layer controller adopts the CAN bus to communicate by letter with master controller, adopts RS232 to communicate by letter with the multimedia controller in the car, and MCU receives and dispatches communication data with interrupt mode.Be connected by data wire, address wire and control line between MCU and the CPLD control unit, transmit signal by the programmable I/O pin between peripheral circuit module and the CPLD.The chip select circuit of each module of CPLD as shown in Figure 5.
In select CPLD in the plate, as association's processing unit of MCU, be responsible for the dynamic display of functional of 5 * 7 matrix LEDs and 32 elevator push buttons of 4 row, 8 row scanning, decipher and go and tremble, and the function of lighting button.The realization of these functions is all based on VHDL hardware description language and principle diagram design method.Brought into play the hardware parallel processing capability of programmable logic device, alleviate the processing burden of CPU, dwindled board area, improved the stability and the reliability of integrated circuit board, having improved the real-time of system to a great extent, is the raising of a germplasm on disposal ability.
Referring to Fig. 6, the some matrix LED model that choosing layer controller selected for use is 5 * 7 dot matrix, and each dot matrix led module inside has 35 LED diodes to be formed, and adopts the dynamic scan dot matrix.CPLD internal point matrix LED indicative control unit is write with VHDL language, is made up of three modules, and first module realizes the demonstration of floor traffic direction, and second and third module realizes the dynamic demonstration of floor information.
Referring to Fig. 7, lift car choosing layer controller expanded a keyboard matrix that has 32 buttons, 4 row, 8 row, be responsible for control by CPLD inside by key control unit, take 12 PIO of CPLD, article 4, as the line scanning output of key panel, 8 column scan inputs as key panel are when button is pressed, by inner the going to tremble with decoding unit and handling of realizing of CPLD, the result is defeated by MCU.
The IO control unit realization of CPLD is lighted 32 24v button indicator lights, and for example: when chip selection signal was chosen 0x0200, each of 8 position datawires can be programmed in MCU and control for the light on and off of an indicator light.Indicator light direct current 24V drives, and externally exports with photoelectric coupler isolation.The circuit of realizing 74373 latchs of press key lamp control connects as shown in Figure 8.
In addition, CPLD also is responsible for selecting the plate circuit to get the bus encoded control in whole and must controlling the global clock signal.More than design all can online according to the actual requirements any modification.
As seen, realize that than discrete digital circuit or dedicated button scanning chip the key scan of controller and indicator light show, adopt CPLD as kernel control chip, both reduced hardware cost, can realize decoder with piece of CPLD, the function of multiple digital circuit such as latch, reduced the design risk again, online programming debugging repeatedly, even design wrong, also can revise, improve development efficiency greatly, and can obtain to stablize by the hardware logic programming, control effect reliably, also reduce the cost of system development simultaneously, reached the requirement of system design.
Claims (5)
1. multimedia information interaction control system for elevator box, comprise multimedia controller, liquid-crystal controller and color LCD screen, choosing layer controller, it is characterized in that, described multimedia controller comprise first microprocessor, main memory, with choosing layer controller between the serial communication interface of communicating by letter, described main memory has been opened up frame buffer zone; Described liquid-crystal controller links to each other with first microprocessor, comprise the programmable logic device, video memory and the lcd drive chip that are used for the control timing logic, described frame buffer zone is by establishing the mapping corresponding relation between first microprocessor and the video memory, first microprocessor is directly linked to liquid crystal display screen to the read-write operation of frame buffer zone; Described first microprocessor is equipped with based on frame buffer zone device driver and graphics application program under the embedded control system platform, and obtain an elevator operation information from choosing layer controller by serial communication interface, to realize interaction of multimedia information control.
2. multimedia information interaction control system for elevator box according to claim 1 is characterized in that, described first microprocessor is an arm processor.
3. multimedia information interaction control system for elevator box according to claim 1 and 2, described choosing layer controller comprise the second microprocessor control module, as association's processing unit of second microprocessor and coupled programmable logic device control module, display module, key-press module, be used for the serial port module of communicating by letter between second microprocessor and the multimedia controller and be used for communicating by letter between second microprocessor and the core controller, thereby obtain the CAN bus communication module of elevator operation information; Described programmable logic device links to each other with key-press module with a matrix LED display module respectively, be used for the output information that transmits according to second microprocessor, control point matrix LED display module, realize the demonstration of floor traffic direction, floor information, and be used to realize to elevator push button scanning, decipher and go and tremble, and send key information to microprocessor.
4. multimedia information interaction control system for elevator box according to claim 3, it is characterized in that, also be provided with indicator light on the button of described building floor choosing device, the programmable logic device control module is controlled the light on and off of respective keys indicator light according to the light on and off control information to each button indicator light of microprocessor output.
5. multimedia information interaction control system for elevator box according to claim 3 is characterized in that described multimedia controller also is provided with ethernet module.
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| CNA2007100584262A CN101267526A (en) | 2007-07-30 | 2007-07-30 | Multimedia information interaction control system for elevator box |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913518A (en) * | 2010-08-13 | 2010-12-15 | 广州永日电梯有限公司 | Quickly-started true color elevator floor indicator and display method thereof |
| CN102050363A (en) * | 2010-12-22 | 2011-05-11 | 重庆伊士顿电梯有限责任公司 | High-rise elevator control master command board and control method thereof |
| CN102689825A (en) * | 2012-04-06 | 2012-09-26 | 苏州默纳克控制技术有限公司 | Elevator floor display panel floor address setting system and method therefor |
| CN102887404A (en) * | 2012-09-28 | 2013-01-23 | 天津大学 | Elevator calling system based on Wi-Fi (wireless fidelity) wireless network |
| CN103631725A (en) * | 2013-11-25 | 2014-03-12 | 奥维通信股份有限公司 | MCU-LCD driving method and system based on ARM-Linux platform |
| CN104590963A (en) * | 2015-01-28 | 2015-05-06 | 江苏威尔曼科技股份有限公司 | System and method for displaying customer customized elevator information |
| CN107285151A (en) * | 2017-08-18 | 2017-10-24 | 江苏威尔曼科技有限公司 | A kind of elevator color LED display device |
| CN110933495A (en) * | 2019-12-06 | 2020-03-27 | 深圳市斯迈龙科技有限公司 | Video playing method and device based on embedded system |
| CN114363583A (en) * | 2022-03-17 | 2022-04-15 | 长沙金维信息技术有限公司 | Linux-based embedded video monitoring system construction method |
| CN115101025A (en) * | 2022-07-13 | 2022-09-23 | 珠海昇生微电子有限责任公司 | LCD control circuit supporting virtual frame buffering and control method thereof |
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2007
- 2007-07-30 CN CNA2007100584262A patent/CN101267526A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913518A (en) * | 2010-08-13 | 2010-12-15 | 广州永日电梯有限公司 | Quickly-started true color elevator floor indicator and display method thereof |
| CN102050363A (en) * | 2010-12-22 | 2011-05-11 | 重庆伊士顿电梯有限责任公司 | High-rise elevator control master command board and control method thereof |
| CN102050363B (en) * | 2010-12-22 | 2013-08-28 | 重庆伊士顿电梯有限责任公司 | High-rise elevator control master command board and control method thereof |
| CN102689825A (en) * | 2012-04-06 | 2012-09-26 | 苏州默纳克控制技术有限公司 | Elevator floor display panel floor address setting system and method therefor |
| CN102689825B (en) * | 2012-04-06 | 2016-03-09 | 苏州汇川技术有限公司 | elevator floor display panel floor address setting system and method |
| CN102887404A (en) * | 2012-09-28 | 2013-01-23 | 天津大学 | Elevator calling system based on Wi-Fi (wireless fidelity) wireless network |
| CN103631725B (en) * | 2013-11-25 | 2016-08-17 | 奥维通信股份有限公司 | MCU-LCD driving method based on ARM-Linux platform and system |
| CN103631725A (en) * | 2013-11-25 | 2014-03-12 | 奥维通信股份有限公司 | MCU-LCD driving method and system based on ARM-Linux platform |
| CN104590963A (en) * | 2015-01-28 | 2015-05-06 | 江苏威尔曼科技股份有限公司 | System and method for displaying customer customized elevator information |
| CN107285151A (en) * | 2017-08-18 | 2017-10-24 | 江苏威尔曼科技有限公司 | A kind of elevator color LED display device |
| CN110933495A (en) * | 2019-12-06 | 2020-03-27 | 深圳市斯迈龙科技有限公司 | Video playing method and device based on embedded system |
| CN114363583A (en) * | 2022-03-17 | 2022-04-15 | 长沙金维信息技术有限公司 | Linux-based embedded video monitoring system construction method |
| CN115101025A (en) * | 2022-07-13 | 2022-09-23 | 珠海昇生微电子有限责任公司 | LCD control circuit supporting virtual frame buffering and control method thereof |
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Open date: 20080917 |