| 詳細參數(shù) | |||
|---|---|---|---|
| 品牌 | GE | 型號 | IC693MDL742 |
| 結(jié)構(gòu)形式 | 模塊式 | 安裝方式 | 控制室安裝 |
| LD指令處理器 | 硬PLC | I/O點數(shù) | IC693MDL742 |
| 功能 | IC693MDL742 | 工作電壓 | 220 |
| 輸出頻率 | 220 | 處理速度 | 20 |
| 程序容量 | 10 | 數(shù)據(jù)容量 | 20 |
| 產(chǎn)品認證 | ccc | 環(huán)境溫度 | 10 |
| 環(huán)境濕度 | 10 | 加工定制 | 否 |
| 重量 | 1 | 產(chǎn)地 | 美國 |
| 外形尺寸 | 10 | ||
IC693MDL742
IC693MDL742
IC693MDL742
IC693MDL742
目前公交報站有三種方式，一種是利用GPS全球衛(wèi)星定位系統(tǒng)的公交車報站系統(tǒng)，目前美國部分城市投入使用，國內(nèi)也有此類產(chǎn)品的研制開發(fā)，其功能強大，系統(tǒng)穩(wěn)定，但其投資昂貴，尤其是一些中小城市無法承受。目前我國部分城市采用手動電子報站和人工報站的方式，而它們都離不開司務人員，加大司乘人員的工作強度。手動電子報站一般由司機或者乘務員控制，經(jīng)常出現(xiàn)錯報，誤報的情況，基于上述情況的不足，結(jié)合公交車輛的使用特點及實際營運環(huán)境，研制開發(fā)了市內(nèi)公交智能報站系統(tǒng)。技術(shù)關(guān)鍵是對車輪轉(zhuǎn)軸的轉(zhuǎn)角的脈沖進行計數(shù)，將計數(shù)值與預置值對比，即可確定報站時刻，達到準確自動的目的。以AT89C51為CPU在中斷處理程序中對外來脈沖計數(shù)，利用ISD4004輸出語音。
一 組成原理
系統(tǒng)由脈沖檢測、脈沖計數(shù)、比較判斷、控制信號、語音芯片、輸出顯示等組成。
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