针对传统污水监测系统的弊端，文章设计了一种基于无线传感器网络的污水监测系统，通过在采样区域内布置若干pH值传感器、电导率传感器、DO(溶解氧)传感器、氨氮NH3-N传感器、浊度传感器、温度传感器获得相关水质信息，利用ZigBee技术传输至无线网关节点，再由无线网关节点通过GPRS技术传输至远程监控中心进行数据分析，从而达到污水监测的目的。通过实验测试，该系统稳定可靠，能够满足预期要求。
2022-12-27 23:47:28
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MT6253 GSM/GPRS Baseband Process Data Sheet 0.99 SP1
2022-12-26 23:29:57
8.09MB
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mtk 首款单芯片手机完整解决方案，硬件规格书 MT6253 GSM/GPRS Baseband
2022-12-26 23:28:08
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MT6236 GSM GPRS EDGE Baseband Processor Data Sheet_v1.08。MT6236的基带芯片的文档。
2022-12-26 23:26:14
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1. System Overview
The MT6218B is a highly integrated single chip solution
for GSM/GPRS phone. Based on 32 -bit ARM7EJ-STM
RISC processor, MT6218B features not only high
performance GPRS Class 12 MODEM but is also designed
with support for the wireless multi-media applications,
such as advanced display engine, hardware JPEG decoder,
synthesis audio with 64-tone polyphony, digital audio
playback, Java acceleration, MMS and etc. Additionally,
MT6218B provides varieties of advanced interfaces for
functionality extensions, like 8-port external memory
interface, 3-port 8-bit parallel interface, NAND Flash,
IrDA, USB and MMC/SD/MS/MS Pro. The typical
application can be shown as Figure 1.
2022-12-26 23:24:39
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嵌入式Linux下实现GPRS拨号上网 本人使用FriendlyARM开发板与GPRS模块（SIM300，cmnet 连接）实现了基于PPP的拨号上网
2022-12-16 08:36:59
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LPC11E68 MCU control YIYUAN GPRS modules
2022-11-22 15:23:15
1.47MB
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the software code for real time and setup program packages, and application communication driver program!
2022-11-22 15:19:59
6.65MB
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