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基于单片机的扭矩测量技术研究 总被引:1,自引:0,他引:1
阐述了一种基于单片机的扭矩测量系统.该系统利用应变式扭矩传感器实现了扭矩及轴向力的监测,并详细介绍了用AD7705芯片采集传感器的输出电压进行模数转换,通过无线收发芯片nRF2401实现数据的无线传送,实现了扭矩的实时监测. 相似文献
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介绍一种基于单片机的扭矩测量系统。通过在弹性轴上黏贴电阻式应变片的方式制作出一个扭矩传感器,使用单片机AT89C51对采集的扭矩信号进行处理并通过LED数码管显示出来,从而实现在线测量扭矩的目的。文中详细介绍了模数转换器AD574芯片与单片机构成的模数转换电路,LED数码管的显示接口电路以及使用MAX232芯片实现与PC机连接的串口通信电路。 相似文献
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基于数据无线传输技术的扭矩传感器系统 总被引:1,自引:0,他引:1
提出了一种扭矩传感器数据无线传输系统,介绍了硬件结构设计及软件系统工作流程.该系统解决了传统应变式传感器因现场连线众多而带来的不便,并消除了各种隐患,适合于需要利用无线数据传输的区域.通过测试表明:系统具有应用灵活可靠,抗干扰能力强等特点. 相似文献
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论述了一种微机测量扭矩和转速的原理和方法。利用微机的时钟脉冲研制出一种精度达微秒级的时钟,用此时钟测量扭矩的误差小于1%,测量的转速误差小于1‰。在实际应用中提出了解决现场信号不稳定的两种测量方法,即周期计数和定时截取的测量方法。 相似文献
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不压井修井机上的液压转盘需要测量其输出扭矩和在相应扭矩下卡瓦牙的夹持性能,市场上没有专门的测量设备,如果要设备厂家专门设计价格太高,鉴于这个因素,我们自己设计一套测量扭矩的工装,很好的测量出转盘的扭矩和夹持机构的夹持性能,一是节约了成本,二是为新产品的开发提供了有利支持。 相似文献
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减速器是起重机的一个重要机构,其传动效率影响着起重机的工作效率。测量减速器的输入与输出扭矩是间接研究减速器效率的一种方式。基于减速器工作状态,设计出一种应变式扭矩测量系统,在减速器处于工作状态时测量其输入输出扭矩,得到其工作状态下的机械传动效率。 相似文献
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一种新颖的测量旋转轴扭矩传感器 总被引:2,自引:0,他引:2
揭景耀 《仪表技术与传感器》1990,(4):26-28
本文将介绍一种,原理新颖、结构简单、连价低廉、使用可靠、测试精度高,具有先进水平的扭矩传感器。 相似文献
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《Measurement》2014
The structural vibration detection for large bridges is critical. A wireless measurement system based on Wireless Sensor Networks (WSNs) for large bridges was developed in this paper. The overall architecture of the wireless system is introduced; the design of wireless nodes and the principle of the central station are given in detail. Experiments are conducted in the laboratory and the Nanjing IV Yangtze River Bridge to verify the performance of the designed system. Experimental results show that the performances of the designed system are improved in the transmission distance. The system anti-jamming ability and data transmission packet loss rate are also improved compared to traditional wireless sensor systems. Meanwhile, with the external sensing interfaces, the system has a superior performance in characteristics of high sensitivity and ultra low frequency. It can easily and quickly carry out structural vibration detection for a large bridge in its construction, future operation, and maintenance periods with strong practicality and high application value. 相似文献
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A novel automatic multi-channel measurement system is developed for evaluation of multi-layer thin films. With the aim to solve the unsuitability of conventional four-probe measurements with van der Pauw and Montgomery configurations for multi-layer thin film structure, this measurement system can acquire the temperature coefficient of resistance (TCR) and the I–V characteristics of multi-layer thin films. The wireless technology adopted in this measurement system separates the data acquisition and control circuit, which facilitates the application of the system. The maximum measurement capability of multi-channel acquisition system is 16 samples in a batch. The present work also proposes a highly accurate resistance measurement method for characterizing the multi-layer thin films. The advantages of this system include perfect functions, user-friendly interface, high integration and low-cost. The practical application of the system demonstrates a measurement error less than 0.005% of sample resistance. The testing results show that this system performed well in multi-layer thin film measurement. 相似文献
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沥青洒布量智能测试系统是一种基于单片机的嵌入式系统,该系统为路面上的沥青洒布施工提供方便和保证准确度。该文介绍了系统的原理,给出了系统的软硬件设计,实现了在8位LED数码管上显示沥青洒布量和流量、车速和泵速、洒布宽度和料号等参数,并通过RS232串口实现了单片机与PC机的通信。主要特点:在8个数码管上分时复用显示2组参数,软件上预先定义了一些功能键,对系统进行标定,达到较高的精度。 相似文献
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杨柳春 《工业仪表与自动化装置》2011,(2):41-43,50
针对炼厂储油罐区的多罐液位监控可靠性的需要,提出了基于MCGS组态软件的多罐液位监控系统的设计方案.系统以89C51单片机为多罐液位监控系统的主控器,用MCGS组态软件设计友好的人机对话界面,来实时监控多罐液位控制系统的运行状态.实验证明,该系统具有实际应用价值. 相似文献
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This paper describes a measurement system for measuring a large impulse torque generated by a high capacity impact wrench. The mechanical system and electronics were found to be durable, repetitive and accurate. Unfortunately, the impulse nature of the torque excites the dynamics of the measurement system. Typically, this problem can be addressed through measurand reconstruction. However, in this case, it is impossible to generate the known input required to tune the measurand reconstruction. The free vibration characteristics of the dynamometer are used as an approximation to the forward model and a reconstruction algorithm is proposed and implemented. Experimental results are also included for two types of impact wrenches. 相似文献
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将复杂庞大的工程项目分解成多个功能单一的小模块实现,是COM组件设计思想的具体体现。在简要介绍分布式对象与对象服务后,本文设计了具有命名服务和事件服务两种对象服务功能的事件提供者和事件消费者COM组件以及其他诸如硬件驱动、图形显示等COM功能组件。这些组件提供的远程对象状态监控以及基于事件的对象间数据通信功能,使应用于无人机飞行控制系统的分布式测控系统的实现成为可能。最后,本文通过分布式传感器监测系统开发实例,说明本文所提出的组件设计方法能帮助系统设计者方便地扩展系统,加快系统开发速度,提高设计效率。 相似文献