化工自动化及仪表
化工自動化及儀錶
화공자동화급의표
CONTROL AND INSTRUMENTS IN CHEMICAL INDUSTRY
2015年
2期
195-198,219
,共5页
断路器测试系统%自由口通信%数据远程传输%VB%S7-200 PLC%Access2000数据库
斷路器測試繫統%自由口通信%數據遠程傳輸%VB%S7-200 PLC%Access2000數據庫
단로기측시계통%자유구통신%수거원정전수%VB%S7-200 PLC%Access2000수거고
circuit breaker test system%free-port communication%remote data transmission%VB%S7-200 PLC%Access 2000 database
根据断路器过载测试的相关要求,以三相塑壳式断路器250H-250A的A相为例,设计了一种可实现在线调整双金属片螺钉长度的断路器测试系统,柔性调整机构有效解决了手工调节产生的误差。重点介绍基于VB与S7-200 PLC自由口通信的设计方案,实现了数据的远程传输,提高了系统的通信速度同时降低了硬件开发成本;VB与Access2000数据库的动态链接实现了测试数据的存储、查询及归档等功能,为进行测试结果的分析了提供数据支持。
根據斷路器過載測試的相關要求,以三相塑殼式斷路器250H-250A的A相為例,設計瞭一種可實現在線調整雙金屬片螺釘長度的斷路器測試繫統,柔性調整機構有效解決瞭手工調節產生的誤差。重點介紹基于VB與S7-200 PLC自由口通信的設計方案,實現瞭數據的遠程傳輸,提高瞭繫統的通信速度同時降低瞭硬件開髮成本;VB與Access2000數據庫的動態鏈接實現瞭測試數據的存儲、查詢及歸檔等功能,為進行測試結果的分析瞭提供數據支持。
근거단로기과재측시적상관요구,이삼상소각식단로기250H-250A적A상위례,설계료일충가실현재선조정쌍금속편라정장도적단로기측시계통,유성조정궤구유효해결료수공조절산생적오차。중점개소기우VB여S7-200 PLC자유구통신적설계방안,실현료수거적원정전수,제고료계통적통신속도동시강저료경건개발성본;VB여Access2000수거고적동태련접실현료측시수거적존저、사순급귀당등공능,위진행측시결과적분석료제공수거지지。
According to requirements of circuit breaker overload test and taking A-phase of 250 H-250 A three-phase MCCB as an example, a circuit breaker test system which boasting of on-line adjusting screw length was designed, in which, the flexible adjustment mechanism can effectively eliminate the error incurred by manual adjustment.The design scheme of both VB and S7-200 PLC-based free-port communication were emphasized to realize remote data transmission, improve the system’ s communication speed and reduce the hardware cost. The dynamic link of VB and Access 2000 database can realize data storage, query and archiving to provide the support for analyzing the test results.