深圳大学学报理工版

电梯井道环境对线缆有很大的影响,使电梯的制造和安装成本较高,且维护困难,为此提出一种点对点的无线电梯召唤通信系统.该系统以协调器为核心,通过无线单元完成与厅层终端节点的信息收发,通过RS485接口与电梯主控制器相连,取代原有线设备实现电梯系统召唤信息的采集、传输及处理功能.利用433 MHz频段良好的绕射性能,以处理器ARM M0516为核心,结合Si4665射频芯片,设计并实现单台电梯无线厅层召唤的原型系统,开发了协调器及厅层终端节点的软硬件电路.电梯井道现场测试结果表明,该系统不受轿厢位置、曳引机或变频器启停影响,在不同电梯运行状态下都可实现稳定的信号传输,且主芯片可自行定义协议参数,易融入原电梯整机系统.

Since the environment of hoistway has great influence on cables of elevator, causes higher manufacture and installation costs and increases the difficulties of maintenance, this paper proposes a point-to-point wireless call communication system for elevators. The system takes the coordinator as the core. On the one hand, the information to the landing terminal node is received and transmitted by the wireless unit. On the other hand, the previous wireline equipment is replaced by the connection with master controller of elevator through a RS485 interface to realize the collection, transmission and processing of call information from the elevator system. By virtue of the good performance of diffraction of 433 MHz frequency band, and taking ARM M0516 processor as the core in combination with Si4665 radio frequence chip, we design a proto-type wireless hall call system of a single elevator. The software and the hardware circuit of coordinator and landing terminal node are developed. The test results in the hoistway of elevator show that this system is unaffected by the position of the car, the start/stop of the traction machine or the frequency converter. It can realize the stable transmission of signals under different operating conditions of the elevator. The master chip of the system can define the protocol parameters voluntarily, thus it can be easily integrated into the complete system of the original elevator.

引言
1 系统架构
2 通信协议
3 系统实现
5 结语

图1 电梯无线通信系统的星形拓扑<br/>Fig.1 Star topology of wireless communication system for elevator

图1 电梯无线通信系统的星形拓扑
Fig.1 Star topology of wireless communication system for elevator

图2 信号的数据结构<br/>Fig.2 Data structure of transmission signal

图2 信号的数据结构
Fig.2 Data structure of transmission signal

表1 信息优先级及数据类型定义<br/>Table 1 Priorities of information and data type definitions

表1 信息优先级及数据类型定义
Table 1 Priorities of information and data type definitions

图4 协调器节点单元硬件结构框图<br/>Fig.4 Structural diagram of node element hardware of coordinator

图4 协调器节点单元硬件结构框图
Fig.4 Structural diagram of node element hardware of coordinator

图5 协调器软件流程<br/>Fig.5 Coordinator software processing flowchart

图5 协调器软件流程
Fig.5 Coordinator software processing flowchart

图6 厅层/轿厢终端节点单元硬件结构框图<br/>Fig.6 Structural diagram of node element hardware of hall/cage

图6 厅层/轿厢终端节点单元硬件结构框图
Fig.6 Structural diagram of node element hardware of hall/cage

图7 厅层/轿厢终端节点软件流程图<br/>Fig.7 Hall/cage node software processing flowchart

图7 厅层/轿厢终端节点软件流程图
Fig.7 Hall/cage node software processing flowchart

图8 组网成功调试界面<br/>Fig.8 Successful commissioning interface for networking

图8 组网成功调试界面
Fig.8 Successful commissioning interface for networking

图9 实测中协调器终端的OLED显示信息<br/>Fig.9 OLED display information of coordinator terminal during actual measurement

图9 实测中协调器终端的OLED显示信息
Fig.9 OLED display information of coordinator terminal during actual measurement

图10 点对点往返1次通信的传输时间<br/>Fig.10 Transmission time of a point-to-point

图10 点对点往返1次通信的传输时间
Fig.10 Transmission time of a point-to-point

[1] Oh J H, Finn A M, Peng P Y. Elevator cab locating system including wireless communication: US07077244[P]. 2006- 07-18.
[2] Chan M K J. Automated elevator car call prompting: US13/219,921 [P]. 2011- 08-29.
[3] Mangini R J, Puling R J, Stranieri P. Wireless, self-contained elevator call request entry system: US7958971[P]. 2011- 06-14.
[4] Motoyama N, Inaba H, Kawabata A, et al. Elevator system having wireless transmitting/receiving units: US 6446761[P]. 2002- 09-10.
[5] Yang Jian. Processing and transmission of wireless hall call signals of elevators based on ZigBee[J]. Energy Education Science and Technology Part A: Energy Science and Research, 2015, 33(5): 2265-2278.
[6] Yang Jian, Ou Zhe. Processing and transmission strategy of elevator cage terminal based on low-power ZigBee technology[J]. International Journal of Engineering Practical Research, 2014, 3(4): 100-106.
[7] 张俊,赵国军,魏君燕,等.ZigBee无线通信在电梯轿厢控制系统中的应用[J].机电工程,2013,30(11):1373-1378.
[8] 符多铎,谭秋林,王红亮,等.低功耗电梯呼叫系统的设计与实现[J].电子技术应用,2013,39(9):77-80.
[9] Yu Xiaoqing, Han Wengting, Zhang Zenglin. Survey on a novel wireless sensor network communication at 433 MHz frequency[J]. International Journal of u- and e- Service, Science and Technology, 2015, 8(7): 223-234.
[10] Weyn M, Ergeerts G, Wante L, et al. Survey of the DASH7 Alliance protocol for 433 MHz wireless sensor communication[J]. International Journal of Distributed Sensor Networks, 2013, 9(12): 870430.
[11] Kim S, Brendle C, Lee H Y, et al. Evaluation of a 433 MHz band body sensor network for biomedical applications[J]. Sensors, 2012, 13(1): 898-917.
[12] 刘杰,章韵,陈建新.利用433 MHz射频通信技术实现智能家居系统[J].计算机应用,2012,32(S2):68-72.
[13] 颜伟,赵阳,王恩荣,等.射频识别系统电磁辐射干扰特征快速分析与抑制[J].中国电机工程学报,2012,32(9):161-166.
[14] 佐磊,何怡刚,李兵,等.无源超高频射频识别系统路径损耗研究[J].物理学报,2013,62(14):144101.
[15] 李坚强,何穗强,明仲.基于智能网关的数字家庭系统研究与设计[J]. 深圳大学学报理工版,2014,31(6):630- 637.
[16] 朱鸿, 王成志, 项瑞青. 一种电梯安全监控系统: CN203143855U[P]. 2013- 08-21.

备注

引言

1 系统架构

2 通信协议

3 系统实现

5 结语

期刊信息

备注

引言

1 系统架构

2 通信协议

3 系统实现

5 结 语

期刊信息

5 结语