外文翻譯--gsm模塊收發(fā)中文短消息的關(guān)鍵技術(shù)-其他專業(yè)(參考版)
2025-01-23 09:49本頁面
【正文】 Otherwise, search through the lookup table method of its corresponding Chinese character GB code, realize the conversion between different coding. Conversion process as shown in Figure 2. Extraction of information content of some of the procedures are as follows: Using binary search method, the worst number of search lg2 (n +1), the length of table n to 7 464, so the worst is about 13 times the number of search. In other words, a Chinese coding conversion after up to 13 times pared to plete search, singlechip realtime control can be pleted. . 3 Singlechip realize the many serial 51 Series MCU general there is only one serial channel, through the serial port connected with the GSM module is not longer connected to other serial equipment。 through the AT mand to transmit data, voice and SMS and so on, userfriendly development and design. SMS AT mand AT mands used by the terminal equipment (TE) or data terminal equipment (DTE), is sent to the terminal adapter (TA) or data circuit terminating equipment (DCE).Device by sending AT mands to control the mobile station, and with the GSM work to the AT mand to make calls, text messaging, phone book, data operations, such as the replenishment of the operational aspects of control. Singlechip Send this article by AT mands to control the GSM module to receive and send mobile phone short message. Commonly used SMS related AT mands and explanations such as listed in Table 1. Message resumption model At present, the receive and send SMS messages monly used model has two main: Text (text) mode and PDU (Protocol Data Unit, Protocol Data Unit) mode. (1) Text Mode Text mode is textonly mode, you can use different character sets. The mode of information transmission and reception of the coding is relatively simple, but the domestic mobile phone does not support Text mode to send and receive Chinese characters characters mobile phone short message. In this paper, encoding conversion realize the GSM module in the Text mode to send and receive Chinese text messages. (2) PDU mode PDU Mode Supported by all mobile phone, you can send the message in both English and Chinese. PDU mod
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