Research on Remote Fault Detection System of Ceramic Kiln Based on 5G and IoT Technologies

In order to overcome the defects of the existing technology that the detection of ceramic electric kiln faults takes a long time and costs a lot,an electric kiln control and fault detection device was designed.The working process of the device includes detection module,control module,start⁃stop module and switch module.The detection module detects the resistance circuit and sends a fault signal to the control module.The control module generates stop signal and fault information according to the fault signal,and starts the electric kiln when the fault signal is not received within the preset time.The start⁃stop module can monitor the internal temperature of the electric kiln and control the closing status of the switch module.The switch module is used to control the connection status of AC power and each resistance circuit in the kiln.Based on the 5G DTU or 5G module,the control module could send the information to mobile terminal under the ultra⁃reliable and low⁃latency communication(uRLLC)technical characteristics of 5G communication.

Design of Remote Monitoring System for Ceramic Electric Kiln

In order to improve the management and control requirements of small electric kilns in ceramic production field.According to the excessive dispersion of electric kilns in porcelain production field,a remote monitoring system based on RS485 bus and Modbus protocol is designed.The system consists of data acquisition,field control,cloud monitoring and communication protocol.MCGS is used as the master station to communicate with the temperature controller,collect and transmit the internal data to Siemens PLC.Through the communication between Siemens PLC and IOT gateway,the kiln working data is uploaded to the cloud platform to realize the remote monitoring for ceramic electric kiln.The experimental results showed this system can accurately collect the working temperature and parameters of the kiln in real time,and can remotely cortrol the kiln.

Rigid Subchain Detection Algorithm of Mechanism Kinematic Chain and Realization of Recursive Program

In the process of kinematic chain type synthesis,it is necessary to solve the problems of isomorphism identification and rigid subchain detection.The problem of rigid subchain detection can be reduced to subgraph isomorphism problem,which belongs to NPC problem.This paper introduces the properties,detection methods,algorithm time complexity and program code of rigid subchain of kinematic chain.The detection codes of rigid subchains with different number of links are different.It is necessary to modify the for-loop nesting times of program code according to the change of the link number,so the code reusability is very low.In view of this,the recursive pseudo code of rigid subchain detection algorithm is proposed for the first time,which makes the program can be directly used for rigid subchain detection of any number of links,improves the reusability of the code,and provides a certain reference for the realization and optimization of computer programs for NPC problems in other disciplines.A rigid subchain detection software of kinematic chain was developed,and the rigid subchain detection process of a 16-link kinematic chain was successfully realized in the software.

具有可调电子结构的无定型羟基硫化钴纳米片用于高性能电化学储能

赝电容超级电容器具有高功率密度、超长寿命以及可靠的安全性,使其在能源转化和存储中扮演着重要角色.但是,设计具有高容量、优异倍率性能以及出色的机械稳定性的电极材料依旧是一个挑战.本工作中,我们采用室温部分硫化策略来调节氢氧化钴纳米片的电子结构和晶态.得到的羟基硫化钴具有无定形结构,同时还有丰富的低价钴离子.三电极体系下,该电极在电流密度为1 A g^-1时的比电容达2110 F g^-1,当电流密度增大至10 A g^-1时容量仍有92.1%的保留,容量和倍率性能都远高于氢氧化钴前驱体(916 F g^-1@1 A g^-1,10 A g^-1的比电容保留率为80%).此外,利用该电极与商业活性炭组成的不对称电容器具有44.9 W h kg^-1的高能量密度以及优异的稳定性(8000次循环后仅衰减4%).