【正文】 近距離的空車位，如果空車位在第一層，當(dāng)車板自動移開后，車輛進(jìn)入車庫內(nèi)進(jìn)行停車操作；如果空車位在上層，載車板先移下來，當(dāng)碰到底層的限位開關(guān)時自動停止，此時，當(dāng)車板才自動移開，車輛準(zhǔn)許進(jìn)入停車庫進(jìn)行停車。這樣，保證了人員的安全。 底層橫移裝置目前在有軌起重設(shè)備的運(yùn)行中，橫移機(jī)構(gòu)的驅(qū)動方式，即驅(qū)動輪的布置通常有：對面雙輪驅(qū)動、單邊中心驅(qū)動、對角雙輪驅(qū)動、四角四輪驅(qū)動和一角單輪驅(qū)動等五種形式，本設(shè)計采用對面雙輪驅(qū)動的方式，它是由電機(jī)通過傳動軸帶動兩邊軌道上的驅(qū)動輪一起工作。下載車板的安全裝置主要是行程極限開關(guān)和防碰撞板。設(shè)滾輪的直徑???r=100mm，則單個從動輪運(yùn)動所需的牽引力為N。取蝸桿頭數(shù). 輪 ??,查表 GB/T100851988《CWU 型減速器主要技術(shù)參數(shù) 》 ，取1z?蝸輪齒數(shù) 。工作原理示意圖如下圖 41： 圖 41 立體車庫工作原理 車庫控制系統(tǒng)硬件設(shè)計 立體車庫控制系統(tǒng)包括硬件和軟件兩方面的設(shè)計內(nèi)容。在主接觸器之前接有相序保護(hù)器，起作用時在交流電發(fā)生相序不正常是使電路發(fā)生斷路，從而保護(hù)電氣元件不被破壞。與 2 個電機(jī)分別相連的接觸器，用于控制各個電路的通斷。相比傳統(tǒng)的限位開關(guān)，接近開關(guān)具有工作可靠、壽命長、功耗的、復(fù)定位精度高、操作頻率高等優(yōu)點(diǎn)。但在本設(shè)計中，此種型號的光電開關(guān)就能滿足設(shè)計要求。 車位滿信號檢測 當(dāng)有車輛進(jìn)入停車系統(tǒng)時，為了使操作員能夠很快得判斷是否有空車位，需要有指示燈指示車輛的存放情況。利用光電開關(guān),行程開關(guān)檢測載車板位置狀態(tài)：用接觸器，繼電器控制點(diǎn)擊的啟動和停止。取車時要移動 1 號載車板，首先要確定 4 號車板上是否停有車輛。即，上層的停車板也要下降到下限位。 為煙霧檢測開關(guān)； 為啟動開關(guān)； 為停止開關(guān)； 為急停開關(guān)。其中德國的西門子有以下以下優(yōu)勢：1）品牌優(yōu)勢，價格優(yōu)勢，市場占有率高優(yōu)勢。故選用 S7200 系列的 PLC。191。214。201。185。187。206。187。211。207。200。161。231。178。241。23206。206。216。 186。253。206。207。187。198。197。226。211。185。雖然這個停車系統(tǒng)只有五個停車位，但是，五位停車系統(tǒng)是大型停車系統(tǒng)的一個縮影。在今后的道路上，我一定再接再厲，不斷攀登。是她在我做畢業(yè)設(shè)計的過程中給予我指導(dǎo)和幫助,鼓勵我一直認(rèn)真走下去，使我能夠順利完成畢業(yè)設(shè)計，再次表示衷心的感謝。 in STOP mode, your program is not executed.Digital inputs: Each scan cycle begins by reading the current value of the digital inputs and then writing these values to the processimage input register.Analog inputs: The FX2N does not update analog inputs from expansion modules as part of the normal scan cycle unless filtering of analog inputs is enabled. An analog filter is provided to allow you to have a more stable signal. You can enable the analog filter for each analog input point.When analog input filtering is enabled for an analog input, the FX2N updates that analog input once per scan cycle, performs the filtering function, and stores the filtered value internally. The filtered value is then supplied each time your program accesses the analog input.When analog filtering is not enabled, the FX2N reads the value of the analog input from expansion modules each time your program accesses the analog input.Analog inputs are updated every scan with the most recent result from the analogtodigital converter. This converter is an averaging type (sigmadelta) and those values will usually not need software filtering.TipAnalog input filtering is provided to allow you to have a more stable analog value. Use the analog input filter for applications where the input signal varies slowly with time. If the signal is a highspeed signal, then you should not enable the analog filter.Do not use the analog filter with modules that pass digital information or alarm indications in the analog words. Always disable analog filtering for RTD, Thermocouple, and ASInterface Master modules.Executing the ProgramDuring the execution phase of the scan cycle, the FX2N executes your program, starting with the first instruction and proceeding to the end instruction. The immediate I/O instructions give you immediate access to inputs and outputs during the execution of either the program or an interrupt routine.If you use interrupts in your program, the interrupt routines that are associated with the interrupt events are stored as part of the program. The interrupt routines are not executed as part of the normal scan cycle, but are executed when the interrupt event occurs (which could be at any point in the scan cycle).Processing Any Communications RequestsDuring the messageprocessing phase of the scan cycle, the FX2N processes any messages that were received from the munications port or intelligent I/O modules.Executing the CPU Selftest DiagnosticsDuring this phase of the scan cycle, the FX2N checks for proper operation of the CPU and for the status of any expansion modules.Writing to the Digital OutputsAt the end of every scan cycle, the FX2N writes the values stored in the processimage output register to the digital outputs. (Analog outputs are updated immediately, independently from the scan cycle.)Programming Concepts, Conventions, and FeaturesThe FX2N continuously executes your program to control a task or process. You use GXDeveloper to create this program and download it to the FX2N. GXDeveloper provides a variety of tools and features for designing, implementing, and debugging your program.Guidelines for Designing a Micro PLC SystemThere are many methods for designing a Micro PLC system. The following general guidelines can apply to many design projects. Of course, you must follow the directives of your own pany’s procedures and the accepted practices of your own training and location.Partition Your Process or MachineDivide your process or machine into sections that have a level of independence from each other. These partitions determine the boundaries between controllers and influence the functional description specifications and the assignment of resources.Create the Functional SpecificationsWrite the descriptions of operation for each section of the process or machine. Include the following topics: I/O points, functional description of the operation, states that must be achieved before allowing action for each actuator (such as solenoids, motors, and drives), description of the operator interface, and any interfaces with other sections of the process or machine.Design the Safety CircuitsIdentify equipment requiring hardwired logic for safety. Control devices can fail in an unsafe manner, producing unexpected startup or change in the operation of machinery. Where unexpected or incorrect operation of the machinery could result in physical injury to people or significant property damage, consideration should be given to the use of electromechanical overrides which operate independently of the FX2N to prevent unsafe operations. The following tasks should b。在這里請接受我誠摯的謝意！“風(fēng)雨不改凌云志，振衣濯足展襟懷。從這里走出，對我的人生來說，將是踏上一個新的征程。但是由于自己知識面的不夠，還不能設(shè)計全自動化的停車系統(tǒng)。179。181。6197。181。236。179。210。207。206。179。204。207。208。4179。170。176。179。191。186。222。191。194。3186。222。1186。18