微电子技术的飞跃推进仪表测量自动化的提升

微电子技术的飞跃推进仪表测量自动化的提升伴随着微电子技术以及计算机技术的高速发展，自动化仪表中的测量技术也获得了较大的发展空间，测量仪器越来越高的智能化都是靠计算机技术的发展实现的。

计算机软件以及硬件中较高的科技含量使测量仪器中的功能变得越来越丰富，科技水平也越来越高。

可是大部分的测量仪器均依赖于智能数据，在一定水平之上只能进行简单的数据处理和打印等功能，目前还未能真正实现仪表测量的自动化，仍有一部分功能需要人来完成。

为了减小工作人员的工作强度以及提高工作效率，光电技术逐渐的被应用进来。

With the development of microelectronics technology and the rapid development of computer technology, measurement technology of automatic instruments also have a larger space for development, intelligent measuring instrument is more and more high are realized by the development of computer technology. High technology content of the computer software and hardware of the measuring instrument function becomes more and more abundant, the level of science and technology is more and more high. But most of the measuring instruments are dependent on the intelligent data, simple data processing and printing function ata level above only, has not really realize the automation instrumentation, there are still a part of function needs people to complete. In order to reduce the work intensity and improve the work efficiency, photoelectric technology was gradually applied in.高科技技术以飞速度发展，越来越高的工业自动化水平，使得自动化控制技术应用的领域在逐步的扩大。

伴随着微电子技术以及计算机技术的发展，测量仪器和技术也得到了最大水平的发展，先后研制出了很多的高科技、高智能的测量仪器。

任何一台仪器都离不开计算机的硬件以及软件的支持，充分利用了其优势，使仪器的测量功能大大增多，技术性能也得到了大幅度的提高。

对于一些电参数的测量，包括电压、电流、相位、功率等，因为有很多模拟指针式仪表的存在，例如电压表、电流表、相位表、功率表等等，虽然很多仪器有了较高的智能化，可是这些智能仪器只能以计算机为媒介实现数据基本的打印和处理工作，未能实现真正意义上的自动化测试，工作人员的工作量还是很大，很多工作都是通过人工完成。

With the fast development of science and technology, more and more high level of industrial automation, automation control technology applied in the field of gradual expansion. Along with the development ofmicro-electronics technology and computer technology, measurement instruments and technology development has been the greatest level, has developed a measuring instrument many high-tech, high intelligence. Every instrument are inseparable from the computer hardware and software support, make full use of its advantages, the measurement instrument has substantially increased, the technical performance has been greatly improved. For the measurement of electrical parameters, including voltage, current, phase, power, because there are a lot of analog measurement instruments exist, such as voltage, current meter, phase meter meter, power meter and so on, although many instrument with high intelligent, but these intelligent instruments only computer-mediated printing and processing the work of basic data, failed to achieve the automation test on real significance, the workload of the staff is great, a lot of work is accomplished by manual.压频转换方式也被称为脉冲频率调制方式，就是通过对基带信号的模拟进行对载冲脉波调频，脉冲频率的变化规律通过基带信号的幅值变化规律进行观察，进而光源的光强通过脉冲调频信号进行调制。

在低压侧一端，通过频压转换器解调脉冲信号。

通过压频转换方式，存在于下文将要介绍的调幅方式中的温度稳定性以及非线性的问题能够有效的得到解决。

并且不需要编码，较为门式起重机方便的进行解调与调制，不管环境多么复杂都可以应用该系统。

在中短途的传输中比较适合。

此外，对于光电转换模块的输出，可以直接将数字信号进行输出，不必解调。

处理之后的信号在微机单元里面进行应用。

Voltage to frequency conversion is also known as the pulse frequency modulation, pulse frequency modulation is to rush through the simulation of baseband signal, variation frequency pulse with amplitude variation of baseband signal is modulated light intensity and light observation, through the pulse frequency modulation signal. At one end of the low-pressure side, through the frequency pressure converter demodulation pulse signal. Through the voltage to frequency conversion mode, temperature stability of amplitude modulation mode below will introduce and the nonlinear problem can be solved. And do not require coding, modulation and demodulation is convenient, no matter how complex environment can be the application of the system. More suitable for thetransmission of short of. In addition, the output of the photoelectric conversion module, can direct digital signal output, not demodulation. The application in the microcomputer unit inside signal processing after.一般情况下，调幅方式即是将要进行测量的信号可以不通过调制而直接作为光源的驱动信号，通过观察光信号的强弱来判断被测信号的大小，光越强，被测信号越大，反之就会越小，而且在与之对应的低压侧的接收电路，也是不需要解调电路的。

此种方式的光电电路具有比较简单的结构电路，但是通过光纤的信号是模拟信号，一些外界因素例如噪音温度等将会对信号产生较大的影响，线性度比较低，稳定性相对来说较差，所以在实际应用时具有一定的难度。

其适用在外界温度变化较小的环境里，且仅适合较短距离的传输。

In general, amplitude modulation mode is the signal to be measured can not through the modulation and direct as the driving signal source, through the observation of optical signal strength to determine the magnitude of the signals, light is stronger, the measured signal is more big, otherwise will be smaller, but in low voltage side and the corresponding. Receiving circuit,also does not need the demodulation circuit. A photoelectric circuit in this way has the structure of the circuit is simple, but through the optical signal is an analog signal, some external factors such as noise temperature of signal will have a greater impact, the linearity is low, the stability is relatively poor, so in practical application has the certain difficulty. Its application in the outside temperature changes smaller spaces, and only suitable for transmission over short distances.虽然与传统的传输系统相比较，光电传输系统具有较高的抗电磁干扰的能力，可是由于光电传输系统由发射和接收电路以及光纤三部分组成，为了保证系统的整体抑制干扰的能力均衡，要对电路进行加强，特别要注意高压侧的电路对电磁干扰的抑制能力。