The main products are categories of all kinds of power cable , control cable , electronic computer several pairs shield cable , prevent explode intrinsically safe cable , compensation cable and silicon rubber cable 公司目前主要产品有：各种电力电缆、控制电缆、电子计算机用多对屏蔽电缆、防爆本安电缆、补偿电缆及硅橡胶电缆等系列产品。
Explosion - proof property : this product ' s production completely meet national expolosive - proof standards . intrinsic safety type explosive - proof grade adopts magnetic trigger - off . it has good effect of explosive - proof and anti - static , and can work safely under explosive and inflamable conditions 安全性能:本产品经国家权威机构防爆认证,完全按照国家防爆标准生产.本安型防爆等级,采用磁性触发,具有优良的防爆,防静电效果,可在各种易燃易爆场所安全工作
Aiming at the practical situations of frequent accidents on mine gas and existing mine gas wire communication system needs to be improved towards wireless communication system , the paper put forward all nodes of gas sensor distributed in underground were brought into an intelligent and flexible wireless network system , so as to form a gas sensor networks system with layering and characteristic of intrinsical safety which relayed on the sensor ' s node 摘要针对矿井瓦斯事故频发、现有矿井瓦斯监测有线通信系统急需向无线通信系统改进的实际情况，文章提出了将分布于井下的所有瓦斯传感器节点纳入一个智能化、结构灵活的无线网络系统，组成以传感器节点为依托的层次化且具有本安特性的瓦斯传感器网络系统。
Then it analyzed and discussed on circuit design of temperature transmittal , low consume circuit design , intrinsic safty circuit design , anti - jamming design , response of manifold signal , signal calibration , signal linearization and application of each layer from software and hardware . chapter1 : technology background and thesis research content chapter2 : fieldbus and associated technology chapter3 : total dissect of hart protocol chapter4 : concrete ways of how to realize hart protocol smart temperature transmitter chapter5 : frontier of fieldbus development - summary of ff protocol smart temperature transmitter 然后从硬件和软件两个方面分析和论述了hart协议智能温度变送器的温度变送电路（ a / d 、 cpu及外围、 d / a 、 v / i ）设计、低功耗电路设计、本安电路设计、抗干扰设计、多种输入信号响应、信号补偿、输入信号线性化处理、 hart协议数据链路层、应用层和物理层以及层间接口的实现。
The article put forward the general plan to realize intelligent pneumatic actuator and studied and analyzed on some of key technical questions : low power - consumption electrical - pneumatic converting unit and low power - consumption control circuit solution which is based on piezo ceramic principle and meet the requirements of intrinsically safe explosion - proof ( ib ct5 ) ; general software solution which realizes the goal of intelligence and hart communication function ; reliability design solution which answers the purpose of mtbf 16000 hours and regard electrocircuit , machine unit and software as main parts 本课题以气动调节阀的智能化为研究目标，提出了实现气动执行器智能化的总体方案。并对其中几个关键技术难题进行了研究分析：以满足本安型防爆要求（ ib ct5 ）的基于压电陶瓷原理的电气（ i / p ）转换单元、低功耗的控制电路方案；以实现智能化和hart网络通讯功能为目标软件总体设计方案；以mtbf 16000小时为目标和以电子电路、机械零部件、软件为主体的整机可靠性设计方案。
