【上海佳实】无线多点检测系统传及软件定做

【上海佳实】SH-WL无线多点测试系统是上海佳实电子科技有限公司基于云平台应用技术、智能检测、监测技术、时钟和环境测量（水分、温度、湿度、位置、气体含量等）多种要素开发的系列传感系统，它不仅具有物联网无线传输的特点，同时具有数据检测、门限设置、时间（同步、检测时刻）、采集周期、报警、干扰检测、软件更新等独特的远程管理功能，使产品从单一的检测功能、提升为检测—监测—判断—报警的功能，非常适合工业领域的检测、监测、状态判断。

一、SH-WL无线传感器的组成
传感器是从有线传感器发展到今天的无线传感器，SH-WL无线传感系统包含以下模块：

1、感知模块：主要由热敏元件、光敏元件、气敏元件、力敏元件、磁敏元件、湿敏元件、声敏元件、放射线敏感元件、色敏元件和味敏元件等敏感元件组成，用于记录被监控目标的一些物理学参数。
信息处理模块：处理模块由嵌入式系统构成，用于处理存储感知模块采集的数据以及其他节点发过来的数据，并负责协调传感器节点各部分的工作，处理模块还具有控制电源工作模式的功能，实现节能。
2、无线通信模块：(传统有线传感器和无线传感器的最本质区别)无线通信模块的基本功能是将处理器输出的数据通过无线信道以及传输网络传送给其他节点或控制中心。
3、能量供应模块：为其他三个模块的工作提供能量。

二、无线传感器组网的基本特点

1、无中心结构：网络中所有传感器节点地位对等，并构成一个对等式网络。节点可以随时加入和离开网络，网络中部分节点发生故障不影响整个网络的运行。
2、网络有动态拓扑：无线传感器网络中的节点可能由于电池能量耗尽或者故障而从网络中退出，也可能是按照某种设定的程序从网络中退出（比如说休眠）；网络外的节点可随时加入网络中。
3、高冗余：由于传感器节点容易出现故障，为了使受损的传感器节点周围的其他传感器节点能够代替受损的节点继续工作，所以传感器网络的节点一般比较密集，具有高冗余的特点。
硬件资源及功能有限：无线传感器节点由于受价格、体积和携载能源的限制，其计算能力、数据处理能力、存储空间有限，决定了在节点操作系统的设计中，协议层次内容不能过于复杂。
4、电源续航能力较小：网络节点有电池供电，电池续航能力小，在许多应用场景中无法更换电池。传感器节点电能用完，该节点就失去了作用，所以在设计传感器网络时需要考虑节能。

三、上海佳实的项目

1、按照某大学实验室要求，制研发并作200+无线传感器，安装在森林树木上，实现1年的连续检测和传输环境温度、湿度、树木的水分变化等信息，以备科学研究。

2、按照某大学科研组要求，研发并制作了260+气体检测无线传感器，安装在工厂内，不间断检测厂房内甲醛、VOC、二氧化碳、氧气等气体含量的变化，以做科学研究。

[Shanghai Jiashi] SH-WL wireless multi-point test system is based on cloud platform application technology, intelligent detection, monitoring technology, clock and environmental measurement (moisture, temperature, humidity, position, gas content, etc.) A series of sensing systems developed by various elements, which not only have the characteristics of wireless transmission of Internet of Things, but also unique remote data detection, threshold setting, time (synchronization, detection time), acquisition cycle, alarm, interference detection, software update, etc. The management function makes the product from a single detection function to the function of detection-monitoring-judgment-alarm, which is very suitable for detection, monitoring and state judgment in the industrial field.

First, the composition of SH-WL wireless sensor

Sensors are developed from wired sensors to today's wireless sensors. The SH-WL wireless sensing system consists of the following modules:

1. Perceptual module: mainly composed of sensitive elements such as thermal element, photosensitive element, gas sensor, force sensitive component, magnetic sensing component, humidity sensitive component, acoustic sensitive component, radiation sensitive component, color sensitive component and taste sensitive component. Used to record some physical parameters of the monitored target.

Information processing module: The processing module is composed of an embedded system, which is used for processing data collected by the storage sensing module and data sent by other nodes, and is responsible for coordinating the work of various parts of the sensor node, and the processing module also has the function of controlling the working mode of the power source. Achieve energy savings.

2. Wireless communication module: (The most essential difference between the traditional wired sensor and the wireless sensor) The basic function of the wireless communication module is to transmit the data output by the processor to other nodes or control centers through the wireless channel and the transmission network.

3. Energy supply module: Provide energy for the work of the other three modules.

Second, the basic characteristics of wireless sensor networking

1. No central structure: All sensor nodes in the network are in equal status and form a peer-to-peer network. Nodes can join and leave the network at any time. Failure of some nodes in the network does not affect the operation of the entire network.

2, the network has a dynamic topology: nodes in the wireless sensor network may be withdrawn from the network due to battery exhaustion or failure, or may be withdrawn from the network according to some set of procedures (such as sleep); outside the network Nodes can join the network at any time.

3. High redundancy: Since the sensor nodes are prone to failure, in order to enable other sensor nodes around the damaged sensor nodes to continue to work in place of the damaged nodes, the nodes of the sensor network are generally dense and highly redundant.

Limited hardware resources and functions: Due to the limitation of price, volume and carrying energy, wireless sensor nodes have limited computing power, data processing capability and storage space, which determines that the protocol level content should not be too complicated in the design of node operating system.

4, the power endurance is small: the network node has battery power, battery life is small, in many applications can not replace the battery. When the sensor node runs out of energy, the node loses its function, so energy savings need to be considered when designing the sensor network.

Third, Shanghai Jiashi's project

1. According to the requirements of a university laboratory, the system is developed and used as a 200+ wireless sensor. It is installed on forest trees to realize continuous detection and transmission of environmental temperature, humidity, and moisture changes of trees for one year for scientific research.

2. According to the requirements of a university research group, the 260+ gas detection wireless sensor was developed and manufactured in the factory to continuously detect changes in formaldehyde, VOC, carbon dioxide and oxygen in the plant for scientific research.