無線鼠標收發(fā)模塊設計

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目 錄
引 言 1
第一章 鼠標器簡介 2
1.1鼠標的起源與發(fā)展 2
1.1.1 鼠標的起源  2
1.1.2鼠標的發(fā)展歷程 2
1.2 無線鼠標的種類 3
1.2.1 27兆的無線鼠標 3
1.2.2 2.4G無線鼠標， 4
1.2.3 藍牙鼠標， 4
1.3鼠標的技術指標 5
1.4 無線鼠標的工作原理 7
1.5 無線鼠標實現(xiàn)原理   7
第二章 無線通信系統(tǒng) 9
2.1通信系統(tǒng)的基本組成 9
2.2 無線通信基礎 10
2.2.1 無線通信系統(tǒng)的構成 10
2.2.2無線通信系統(tǒng)的主要規(guī)格指標 12
2.3無線通信基本技術 14
2.3.1 信源編碼 14
2.3.2 信道編碼 15
2.3.3 調制技術 16
2.3.4 多址技術 17
2.4 無線抗衰落和抗干擾技術 18
2.4.1 無線交織技術 18
2.4.2 信道均衡技術 19
2.4.3 多用戶檢測技術 19
2.5 無線通信發(fā)展趨勢 20
第三章 設計方案選擇  21
3.1 方案論證  21
3.1.1 利用紅外線技術  21
3.1.2 利用藍牙技術  21
3.1.3  利用射頻技術  22
3.2 方案選擇  23
第四章 無線發(fā)射與接收模塊設計 24
4.1基于TDC1808的無線發(fā)射模塊 24
4.1.1 TDC1808和數字編碼器MC145026介紹 24
4.1.2無線發(fā)射模塊電路 26
4.2基于TDC1809的無線接收模塊 27
4.2.1 TDC1809和數字編碼器MC145027介紹 27
4.2.2無線接收模塊電路圖 28
4.3 PCB 設計考慮 29
4.4 與微控制器的接口 29
第五章 無線鼠標接收與發(fā)射模塊設計 31
5.1 總體方案 31
5.2 編/解碼模塊 31
5.3 發(fā)射模塊 34
5.4 接收模塊 35
結論 36
致謝 37
參考文獻 38


摘要：鼠標自出現(xiàn)以來經歷了從機械鼠標到光學鼠標，從有線鼠標到無線鼠標的過渡。文中設計的無線鼠標通信系統(tǒng)模塊包含發(fā)射電路和接收電路兩部分，在發(fā)射電路模塊中系統(tǒng)將采集到的模擬信號經過數模轉換,轉換成可供信道傳輸的數字信號，再經過編碼器MC145026編碼之后傳輸給發(fā)射芯片TDC1808進行發(fā)射
接收芯片TDC1809負責接收信息，將接收到的信號傳輸給譯碼器MC145027進行譯碼，將譯碼后的信息傳輸給計算機，計算機自動完成相應的操作，然后不斷的循環(huán)。經測試，采用該設計的鼠標不僅具有普通鼠標的全部功能，還可以遠距離的靈活操縱鼠標。
TDC1808是微型射頻無線發(fā)射模塊，發(fā)射頻率在250M～350MHz范圍內，可以直接外接各種調制信號，可靠發(fā)射距離能達到120m。TDC1808/TDC1809采用內置天線,可傳送數字信號或模擬信號,適用于各種無線遙控裝置,具有體積小,遙控距離遠,抗干擾能力強等特點。
在設計中采用編/解碼器MC145026/MC145027變換信號使得在與計算機連接過程中有了較簡單和清晰的方案。無須改動鼠標及計算機，無須安裝額外的鼠標驅動軟件，原有鼠標的所有功能亦能正常使用。
關鍵詞：無線鼠標 無線收發(fā)模塊 調制與解調

Design of the receive and transmit module
about the wireless mouse

Abstract：The mouse has experienced from mechanical mouse to optical mouse since appeared, the transition from wired mouse to wireless mouse.As the wireless mouse designed in this paper, its communication system includes two parts of the modules covering emission circuit and receiving circuit . Over the emission circuit module,the system converts the collected analog signals to digital signals of channel transmission through D/A , the digital signals encoded after coder MC145026 transfer to emission circuit module TDC1808 to launch.
Receiving circuit module TDC1809 is responsible for receiving information,It transmits the received signals to the decoder MC145027 to decode,and transfers the decoded information to the computer . The computer automatically completes the corresponding action,Followed by continuous cycle.，After the test,The circuit not only has all functions of the normal mouse, but can also flexibly manipulate the mouse over a long distance.
TDC1808 is miniature RF wireless transmitting module,Transmission frequency at the range of 250M~350MHZit can directly add-ins a veriety of modulation signalAnd have a reliable transmission distance up to 120 m. TDC1808/TDC1809 built-in antenna, it can transfer the digital or analog signals, and applicable to all kinds of wireless remote control device .with small, remote control distance, strong anti-interference ability, and other characteristics.mc145026/mc145027 knitted / decoder used in the design can transforms the signal connected to the computer in the process simpler and clearer proposal. There are no need to change the mouse and computer, also do not need to install additional Mouse driver software. All the function of the original mouse can use normal.
Keywords : wireless mouse wireless transceiver modules modulation and demodulation