CN2442318Y

CN2442318Y - Computor monitor for water and gas quality

Info

Publication number: CN2442318Y
Application number: CN 00221120
Authority: CN
Inventors: 徐志刚; 陈新; 崔小敏
Original assignee: MINGYUAN ELECTRONIC CO Ltd NEW DISTRICT CHANGZHOU
Current assignee: MINGYUAN ELECTRONIC CO Ltd NEW DISTRICT CHANGZHOU
Priority date: 2000-07-21
Filing date: 2000-07-21
Publication date: 2001-08-08
Anticipated expiration: 2010-07-21

Abstract

The utility model relates to a water and gas quality computer monitoring device which comprises a PC. a communication circuit and more than two output ends are mutually connected with a measuring and controlling circuit on a communication bus in parallel, and the communication circuit is connected with all the measuring and controlling circuit communication openings through the communication bus and is arranged on a bus insertion groove in the PC main machine. The utility model has the advantages that various signals of sampling and analyzing water and steam in a thermal power field can directly carry out uninterrupted real-time data collection without need of manual work, and statistic analysis record and monitoring can be carried out simultaneously with higher accuracy rate.

Description

Water and steam quality computer monitoring device

The utility model relate to a kind of be used for monitoring water and steam quality by computer monitoring device soft, combination of hardware.It is many and the analog signals that disperses and the continuous precise of digital quantity signal are measured and control to be used for measurement point under industry spot such as electric power, metallurgy, chemical industry, oil and other mal-condition.

Water and steam quality supervision is one of important step of the generating set safety that guarantees the fuel-burning power plant, economy, stable operation.In the present electric system of China, in order to realize the real-time system monitoring, must dependence manually remove the video data of the various instrument of acquisition and recording, and carry out statistical study, so labour intensity is bigger, accuracy rate is lower.When especially more and field condition is abominable when the monitoring point, more need manually to carry out in a large number statistical study, not only strengthened labour intensity, and be difficult to carry out continual real-time data acquisition, and statistical study and monitoring etc.

The purpose of this utility model provides and a kind ofly need not to rely on manually and directly and can carry out continual real-time data acquisition to the various signals of heating power insitu moisture sample analysis, and can carry out statistical study record and monitoring, the water and steam quality computer monitoring device that accuracy rate is higher simultaneously by multiple spot.

The technical scheme that realizes the utility model purpose is: a kind of water and steam quality computer monitoring device, include PC, communicating circuit and two above output terminal telemetry circuits on communication bus connected with each other, described communicating circuit joins by communication bus and all telemetry circuit communication ports, and is arranged in the interior bus slot of PC main frame.

The utlity model has positive effect: the utility model carries out continual real-time data acquisition by telemetry circuit to the various signals of heating power insitu moisture quality sample analysis, be transported to communication bus by its communication port, and the data that a plurality of telemetry circuits send are compiled processing by communicating circuit, machine collective analysis computing as calculated again, record and monitoring, simultaneous computer also sends to communication bus with the communication port of information by communicating circuit, receive by a plurality of telemetry circuits, at last to the on-the-spot topworks of heating power, make it produce action, whole process need not manually-operated, avoid artificial error, improved accuracy rate.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is the theory structure block diagram of the utility model embodiment;

Fig. 2 is the part electrical schematic diagram of the telemetry circuit 2 of the utility model embodiment;

Fig. 3 is the part electrical schematic diagram of the telemetry circuit 2 of the utility model embodiment;

Fig. 4 is the part electrical schematic diagram of the communicating circuit 3 of the utility model embodiment;

Fig. 5 is the part electrical schematic diagram of the communicating circuit 3 of the utility model embodiment.

As shown in Figure 1: the utility model includes PC 1, communicating circuit 3 and two above output terminal telemetry circuits 2 on communication bus 4 (being cable) connected with each other, described communicating circuit 3 joins by communication bus 4 and all telemetry circuit 2 communication ports, and is arranged in the interior bus slot of PC main frame.Described PC is used for transmission signals and data is focused on and monitor, and is convenient to man-machine conversation.During enforcement, telemetry circuit is connected with on-the-spot existing in-line meter of heating power or actuator.

By Fig. 2, Fig. 3 as can be known: described telemetry circuit 2 includes cpu control circuit 21, and main simulated measurement input circuit 22, the switching value input circuit 23 that mainly is made of optocoupler and integrated chip IC10, IC11, main switching value output circuit 24 and the main communication transmission circuit 25 that is made of integrated chip IC3, IC5, IC6 that is made of optocoupler and integrated chip IC12 that is made of modulus conversion chip IC13 that is connected with cpu control circuit 21.The output terminal of the output terminal of switching value input circuit 23 shown in Figure 3 and the input end of switching value output circuit 24 and cpu control circuit 21 shown in Figure 2 is connected.

Described cpu control circuit 21 mainly has the single-chip microcomputer IC4 of software and peripheral connected address latch chip IC 9, data-storing chip IC 8 and integrated chip IC1 thereof to constitute by inside solidification, wherein the adoptable model of IC4 is: 51 series monolithics such as AT89C52 or AT89C54, and the adoptable model of IC9, IC8 and IC1 is respectively: 74HC373,62256 and 74HC138; It is mainly used in monitors, handles and be sent to communicating circuit 3 by connected communication transmission circuit 25 external data of gathering.Described simulated measurement input circuit 22 is made of A/D conversion chip IC13, reference voltage integrated chip IC7 and peripheral circuit thereof, and wherein the adoptable model of IC13, IC7 is respectively TLC2543 and LT1019; It is used for sending cpu control circuit 21 to handle after the analog quantity of in-line meter 5 at the heating power scene that will be connected with the utility model and single-chip microcomputer IC4 carry out light-coupled isolation and change into digital quantity, its input signal can reach 10 the tunnel at most, promptly can be from AI1～AI10 input.Described switching value input circuit 23 can be made of 14 road optocouplers and data buffering integrated chip IC10 and IC11 at most, and wherein the adoptable model of IC10, IC11 all is: 74HC245; The switching value that it is used for the in-line meter 5 at the heating power scene that will be connected with the utility model converts corresponding digital signal to by optocoupler and data buffering chip and send cpu control circuit 21 to handle.Described switching value output circuit 24 can be made of 8 road optocouplers and data buffering chip IC 12 at most, and wherein the model of IC12 is 74HC377.It is mainly used in the signal that will handle through cpu control circuit 21 through light-coupled isolation and convert switching value output to, the actuator action at control heating power scene.Described communication transmission circuit 25 mainly is made of the integrated chip IC 3 of interface, IC5, IC6 and connection terminal J1, wherein the adoptable model of IC3, IC5 and IC6 is respectively MAX487, MAX232 and MAX232, connection terminal J1 also is the communication port of telemetry circuit 2, is that cable is connected with communication bus 4; It is used for signal that single-chip microcomputer IC4 is sent is that cable is sent to communicating circuit 3 in the mode of serial communication by communication bus 4, thereby has realized being connected of telemetry circuit 2 and PC, promptly realizes the full duplex message exchange with the asynchronous serial communication interface.Described telemetry circuit 2 also has the keyboard interface circuit 26 that is connected with cpu control circuit 21, and it mainly is made of 16 bit keyboards, and it and 1 acting in conjunction of keyboard interface chip IC are used for sending corresponding operational order by keyboard.

By Fig. 4 and Fig. 5 as can be known: described communicating circuit 3 includes cpu control circuit 31, communication transmission circuit 32 that is connected with cpu control circuit 31 and the data buffer circuit 33 that mainly constitutes, and the bus slot interface circuit 34 that mainly constitutes that is connected with the output terminal of data buffer circuit 33 by isa bus and addressing chip IC 7 thereof by the data buffering integrated chip.This circuit is arranged in the bus slot in the PC main frame, is used for the communication of the telemetry circuit 2 that is in parallel more than two and PC 1, carries out pre-service earlier before Data transmission, thereby can improve the communication speed and the processing power of computing machine.The input end of data buffer circuit 33 shown in Figure 5 is connected with the input/output port of single-chip microcomputer IC14 shown in Figure 4.

Described cpu control circuit 31 mainly is made of single-chip microcomputer IC14 and peripheral circuit thereof, and wherein the adoptable model of IC14 is 51 series monolithics such as AT89C52 or AT89C54.It is mainly used in the instruction of sending of transmitting-receiving PC and carries out pre-service, and carries out exchanges data with telemetry circuit 2.Described communication transmission circuit 32 mainly is made of the integrated chip IC 17 of interface, IC18, connection terminal J2, J3 and peripheral circuit thereof, wherein the adoptable model of IC17 and IC18 is respectively MAX232 and MAX485, and connection terminal J2 is that cable is connected with communication bus 4, it also is the communication port of communicating circuit 3, J3 can be connected with RS232 mouth in the computing machine, when not needing cpu control circuit 31 pre-service, thereby the RS232 mouth is converted into the RS48512 mouth, directly handles the data of telemetry circuit 2 transmitting-receivings by PC.It is used for and the connecting of telemetry circuit 2, communication.The data buffer circuit 33 that is connected with cpu control circuit 31 in the present embodiment has four data buffer chip IC19～IC22, and their adoptable models all are 74HC574; It is mainly used in temporarily stores the data of single-chip microcomputer IC14 transmitting-receiving, and exchanges with the data of bus slot interface circuit 34.Described bus slot interface circuit 34 includes isa bus and addressing chip IC 23 thereof, and wherein the adoptable model of IC23 is 74LS688, and isa bus is that model is the bus interface of AT62B.It is used for the data transmission of communicating circuit 2 and PC.In the communicating circuit 3 of present embodiment 2, also has the logic auxiliary circuit 35 that is connected with single-chip microcomputer IC14, this circuit is made of integrated chip IC16 and IC24, the adoptable model of described IC16, IC24 is respectively G16V8, P16V8, this circuit also can combine with logic gate, and it is mainly used in the synchronous and encryption of various signals.

When the utility model uses, simulated measurement input circuit 22 and the input end of switching value input circuit 23, the output terminal of switching value output circuit 24 of telemetry circuit 2 is connected with the signal output part or the control end of heating power existing water and steam sampling in-line meter 4 in scene and actuator.Concrete principle of work is as follows: the various signals of heating power insitu moisture sample analysis are carried out continual real-time data acquisition by the cpu control circuit 21 of telemetry circuit 2, be sent to the communication transmission circuit 32 of communicating circuit 3 and send single-chip microcomputer IC14 to handle by the mode of its communication transmission circuit 25 with serial communication, single-chip microcomputer IC14 delivers to bus slot interface circuit 34 to corresponding data, and bus slot interface circuit 34 directly is connected with PC, the measurement data of in-line meter 5 can be by the PC record, monitor and control, data-switching can be become history curve and real-time tendency figure by the software among the PC, be convenient to the function situation that operating personnel monitor the quality of production and equipment.Plural telemetry circuit 2 can be monitored processing to connected in-line meter 5 or actuator simultaneously, actuator can be a relay, sends instruction by PC, makes it produce corresponding actions, reach the effect that multiple spot writes down simultaneously, controls and moves, saved the labour.The utility model can also be connected with the Enterprise MIS net, thereby can finish large-scale and ultra-large type industry and department's monitor task.

Claims

1, a kind of water and steam quality computer monitoring device, include PC (1), it is characterized in that: also include communicating circuit (3) and two above output terminal telemetry circuits (2) on communication bus (4) connected with each other, described communicating circuit (3) joins by communication bus and all telemetry circuits (2) communication port, and is arranged in the interior bus slot of PC main frame.

2, water and steam quality computer monitoring device according to claim 1, it is characterized in that: telemetry circuit (2) includes cpu control circuit (21), and main simulated measurement input circuit (22), the switching value input circuit (23) that mainly is made of optocoupler and integrated chip IC11, IC10, main switching value output circuit (24) and the main communication transmission circuit (25) that is made of integrated chip IC3, IC5, IC6 that is made of optocoupler and integrated chip IC12 that is made of modulus conversion chip IC13 that is connected with cpu control circuit (21).

3, water and steam quality computer monitoring device according to claim 1, it is characterized in that: communicating circuit (3) includes cpu control circuit (31), and communication transmission circuit (32) that is connected with cpu control circuit (31) and the main data buffer circuit (33) that constitutes by the data buffering integrated chip, and the bus slot interface circuit (34) that mainly constitutes that is connected with the output terminal of data buffer circuit (33) by isa bus and addressing chip thereof.

4, water and steam quality computer monitoring device according to claim 2 is characterized in that: telemetry circuit (2) also has the keyboard interface circuit (26) that is connected with cpu control circuit (21).