1、声光报警监控系统外文翻译文献声光报警监控系统外文翻译文献 (文档含中英文对照即英文原文和中文翻译)原文：audio & optical control of the monitoring systemWithin the micro system, there should be a set of alarming equipment for emergencies to ensure of the safety and remind operators of taking in-time measures. However, so far as some important paramete
2、r or systematic parts are concerned, these equipments are in shortage or ignorance. Given the case, the following methods should be taken into consideration: data collected by the computer, after treatment, digital filtering wave and mark conversion by the computer, can be compared with the given va
3、lue of the parameter at its upper and lower limits. If they are higher than the upper limit value (or lower than the lower limit value), an alarm should be carried out, otherwise, it would be the normal sample value for display and control. In the control system, the examined parameter, after sampli
4、ng by means of A/D, is fed into micro-computer. Followed by the treatment of data, it will not only be sent for display but also accept alarming treatment, so that working staff are able to take corresponding measures in time. At the same time, the comparison between the examined parameter and the g
5、iven value will contribute to the automatic adjustment according to the deviation of them. At present, automatic control technology has become an indispensable technical measure in the course of industrial production. With the advancement of science and technology, and the expansion of productive sc
6、ale, it will be involved in production more widely and play a more and more important role, developing as a symbol in such broad fields of automatic control technology as in energy, military affairs, production, etc. The automation of production process is one without direct human involvement. By me
7、ans of controlling equipment (that is, the so called automatic devices), the producing course will go on according to preset operation laws. However, this set of controlling process need monitoring instruments and transmitters to practice measuring and signal conversion to the parameters in the cour
8、se. In addition to displaying devices applied to indicate and record the parameter, adjusters and calculators are also needed for its mathematic calculation, implementers and coordinators for the implementation of orders in the system, so that the operation can be performed in the process of the pro
9、duction according to the requirements. The design in question aims at carrying out monitoring to this automatic production process. Through the set of parts, audio and optical alarms will take place when the parameter goes beyond the limits or troubles occur in the course of automatic production, al
10、ong with the display of trouble site. Further more, with the help of the audio and optical parts, the automatic state in the course of the production can even be transformed into manual state, so as to help the operators identify the trouble sites and causes in time, reduce the time in failure and m
11、ake the production quickly restore to the normal process. TF devices could be classified into nine types according to various parts. Namely they are convertion types（TFZ）、energy source types（TFY）、supplement types（TFF）、computation types（TFS）、control types（TFK）、given value types（TFG）、display types（TFX
12、）、operation types（TFC）、adjustment types（TFT）, among which, the display types and the operation types are commonly called “devices” while the others named “parts”. What this design focuses is the TFK parts, mainly including alarm, high value selection, low value selection, range between the upper and
13、 lower limits, speed limit, follow-up comparison, manual-automatic switching, audio and optical control and monitoring, etc. By the adoption of input and output parts, TF devices fulfill the connection with the delivered signals on site, thus the accomplishment of accepting or sending out the standa
14、rd current signals at 010mA or 420mA. Various substandard signals (such as frequency, impulse, amount for turn-on and off, etc.) have to be introduced into the system for utilization by means of relevant devices, while the contact signals within the machine adopt d.c. voltage signals at 010V. The TF
15、 device supplies power in two ways: one is the concentrated power supply with machine boxes and the other is the concentrated power supply through operation machines. The former collects the regulated electrical sources at various size on the highest layer of the machine box and the power supply is
16、delivered to different boxes with the help of common wires, or to the relevant devices and operators on site or at the operating table through external terminals. The concentrated power supply 2 at the operation table can meet the demand of the table device. The d c steady power source is of a coupl
17、e of types, such as +24V、+15V、-15V、+5V, etc. among which, the designed monitoring system parts adopt +15V、+5V and -15V. As to the accuracy of the functional parts, most are at 0.5% except those for un-isolated transmission units, which are at 0.2%. So far as TFK device is concerned, the parts for mo
18、nitoring system mainly include TFK-091 for audio and optical control and TFK-092 for monitoring input. They are used in concert, when TFK-092 parts send out the logic level signals for audio and optical alarm, they are accepted right by TFK-091 and each audio & optical control part is able to receiv
19、e six logic level signals sent out by the monitoring input parts, i.e. one audio & optical control part can work in tune with six monitoring input parts. If the monitoring input parts are less than six, the extra parts of the audio & optical control parts will float. TFK-091 audio & optical control
20、parts provide TFK-092 monitoring input parts with high frequency power source and signals without vibration. TFK-091 audio & optical control parts focus more on receiving the logic level signals of sound and light, key outputs including switcher signals at the touching point of the power connecter t
21、o control the box light, those to control sound alarm, high frequency power source signals and the high frequency signals without oscillation. There are five signals focused by TFK-092 monitoring input parts, namely, power loss or over value of +15V in the parts box, power loss or over value of -15V
22、 in the parts box, disconnection of the interlock line input, closure of the input touching points, and closure of isolation input touching points. The main outputs are logic level signals of audio & optical alarm and audio & optical alarm itself.This design targets at the monitoring system, whose f
23、unctions are composed of the following: (1) to identify in time the parameter beyond the limits or other troubles in the course of production and the automatic devices, such as power cutoff and the stop of safety interlock in technique, and, at the same time, send out audio & optical alarm signals t
24、o indicate the nature and site of the trouble; (2) to cancel the “automatic” order of the operator, after the trouble occurs, so as to adjust the system from automatic to manual state, and keep the valve in the original position, or orient it to the preset position; (3) to prohibit any new “automati
25、c” operation order sent to the adjustment system before the trouble released; (4) the monitoring system has to ensure of its own soundness, with self-diagnosing measures such as independent power sources and “trial light”, so that audio & optical alarm signals can be sent out in time once the monito
26、ring system itself in trouble, and protect from mistakes in the switching operation. In the design some logic circuits are used. Care must be taken when connecting logic circuits to ensure that their logic levels and current ratings are compatible. For input and output interface, perhaps the main pr
27、oblem facing the designer is that of electrical noise. Small noise signals may cause the system to malfunction, while larger amounts of noise can permanently damage it. The designer must be aware of these dangers from the outset. There are many methods to protect interface circuits and microcomputer
28、 from various kinds of noise. Following are some examples:(1) Input and output electrical isolation between the microcomputer system and external devices using an opto-isolator or a transformer.(2) Removing high frequency noise pulses by a low-pass filter and Schmitt-trigger.(3) Protecting against e
29、xcessive input voltages using a pair of diodes to power supply reversibly biased in normal direction.In the control system of micro computers, the routine working state can be revealed by indicator lights or digital tube displayers so as to offer information to operators for reference. However, as t
30、o some emergencies, special methods are needed to get operators attention or remind them to take instant measures. Within the control system, sound, light and languages are often adopted for the purpose of alarm, among which, the light effect derives from light diode or flashing light, while sound r
31、esults from simple electrical bells or flutes, or buzzers with adjustable frequencies. If integrated electronic music chips are used, pleasant music will be heard when unusual situation occurs in the system, in addition to suddenly flashed alarming lights, to get the attention from the staff on site
32、 in a harmonious environment and make them take instant measures to ensure that the system be able to produce safely. In the past years, with the application of the industrial controller at the SID general line and the industrial PC machine, alarm systems with the mix of sound and figures are greatl
33、y adopted. Given the more and more vivid and real graphs and exact site identification, they have become increasingly popular. With the development of Chinese language in the collection, treatment, synthesis and recognition of the light technology, language chips are made and applied in the alarming system of micro computers, meetin
