CN2053746U - Patrol measuring transmission device for single cable and multi-way - Google Patents

Abstract

The utility model provides a patrol measuring transmission device for single cable and multi-way. The patrol measuring transmission device comprises a five-core wire transmission cable, a control circuit, an A/D conversion circuit, an interface circuit, a way marking counter, a warning circuit, a computer, a printer, a connector, a decoder and an acquisition switch. The utility model which has the advantages of compact structure and convenient installation can used for multi-point patrol measuring of temperature, humidity and pressure in grain storage, oil industry, chemical industry and light industry.

Description

Patrol measuring transmission device for single cable and multi-way

The utility model relates to the touring transmitting device of measuring of a kind of only cable multichannel.

The special measurement device that device mostly is simple function is surveyed in common patrolling, and employing is that multi-channel sampling is measured multi-thread transmission manner.As: multichannel temperature measurement instrument, multichannel pressure-measuring device or the like.Its versatility is poor, can only connect single sensor special, if carry out multiple spot patrol survey need be with many transfer wires, as measure 3,000 just 3,300 transfer wires of need.Its Installation and Debugging are numerous and diverse, and repair and maintenance is extremely inconvenient.

The purpose of this utility model provides the patrol measuring transmission device that a kind of only cable is used more, uses single transmission cable to realize the touring measurement of multi-functional multiple spot.

The utility model is achieved in that the transmission cable that adopts one five heart yearn, connection is by control circuit, controller that A/D translation circuit, interface circuit, road mark counter, warning circuit, computing machine, printer are formed and connector, code translator, collection switch, to the various sensors that connect measure, calculate, warning or timed print etc.

The knot accompanying drawing describes in further detail the utility model below.

Figure one is the block scheme of the transmitting device that the utility model proposes.

Figure two is basic circuit diagrams of interface circuit and printer in the utility model, computing machine.

Figure three is basic circuit diagrams of A/D translation circuit in the utility model, control circuit and road mark counter.

Figure four is basic circuit diagrams of warning circuit and complete machine power supply in the utility model.

Figure five is basic circuit diagrams of connector in the utility model, code translator and collection switch.

Figure two to figure five forms basic circuit diagram of the present utility model.B1 ', B2 ', B3 ', B4 ' connect with B1, B2, B3, B4 among the figure three respectively among the figure two; A1, A2, A3, A4, A5 connect with A1 ', A2 ', A3 ', A4 ', A5 ' among the figure five respectively among the figure three; C1, C2, C3, C4 connect with C1 ', C2 ', C3 ', C4 ' among the figure four respectively among the figure three; D1, D2 connect with D1 ', D2 ' among the figure four respectively among the figure two.

The utility model comprises: transmission cable 9 and control circuit 1, A/D conversion electricity 2, interface circuit 4, warning circuit 7, road mark counter 3, computing machine 5, printer 6, connector 8, code translator 10, gather switch 11.Control circuit 1 connects transmission cable 9, cable 9 is also through A/D translation circuit 2 joining interface circuit 4, interface circuit 4 is connected with also joining interface circuit 4 of computing machine 5, printer 6 and warning circuit 7, road mark counter 3 respectively, and the other end of cable 9 connects code translator 10, gathers switch 11 to sensor 12 through connector 8.(seeing accompanying drawing 1)

Transmission cable 9 is five core lead Vcc, V _EE, CP, R, V _INCable.Its effect is to transmit power supply and transmit signal.

Control circuit 1 is made up of basic pulse generator IC20, pulsqe distributor IC11 and resistance R 17-22, R28-29, diode D3-10, triode BG1, capacitor C 3.Wherein basic pulse generator IC20 is CD40106, and pulsqe distributor IC11 is CD4017.The effect of control circuit 1 is to produce full sized pules as the clock signal of complete machine with arrange each processes such as sequential, orderly control signal input, output, printing.

A/D translation circuit 2 by integrated circuit (IC) 7, three-state, four d flip-flop IC6 analog switch IC19 and, resistance R 1-16, capacitor C 1-2, diode D1-2 formed.Wherein: integrated circuit (IC) 7 is extensive CMOS integrated circuit CD14433, and trigger IC6 is CD4076, and analog switch IC19 is CD4066.A/D translation circuit 2 has the function of output demonstration and print signal.

Interface circuit 4 is made up of BCD binary-decimal code translator IC3 and electronic analog swtich IC1, IC2, IC4, IC5 and resistance R 57, capacitor C 10.Wherein: code translator IC3 is CD4028, and analog switch IC1, IC2, IC4, IC5 are CD4066.The effect of interface circuit 4 is for binary-coded decimal is translated into decimal code, is the code system that printer can receive with instruction transformation such as P/#, AC, X.

Warning circuit 7 is made up of comparator circuit CD4585/IC12, result treatment circuit CD4027/IC13 and resistance R 30-49, diode D12-30, capacitor C 4-7, triode BG2, loudspeaker Y 1, K switch 1-3.Its effect is to report to the police when putting index when surpassing to give.

The power supply of complete machine is hindered with capacitor C 8-9, volt circuit 7806/W1,7906/W2 and diode D11 by transformer T1.

Computing machine 5 is the single-chip microcomputer utmost point (single card microcomputer).

Road mark counter 3 is made up of analog switch IC8, IC9 sum counter IC10, resistance R 27.Wherein: analog switch IC8, IC9 are CD4066, and counter IC10 is CD4518.Road mark counter 3 be the passage with correspondence write the track label sign indicating number automatically and according to setting value automatic gated sweep count.

Connector 8 is made up of two binary-decimal synchronous counter IC17, double D trigger IC18 and resistance R 54-56, diode D27-28 and two schmitt triggers.Wherein: counter IC17 is CD4518, and trigger IC18 is CD4013.The function of connector 8 is the switchings that control system and code translator 10 and collection switch 11 connected and organize the measurement loop.

Code translator 10 also is a command decoder, and it is made up of pulse sequence divider IC15 and resistance R 50-53, diode D23-26, capacitor C 11, triode BG3.Divider IC15 is CD4024.The main effect of code translator 10 are address codes of sending here of reception control circuit by the corresponding channel switch of address code gating with receive the prime steering order, send steering order backward.

Gathering switch 11 is made up of CmOS integrated analog switch CD4501/IC16.Connect corresponding sensor 12.Its main effect is under the effect of command decoder, and corresponding passage is connected, and measuring-signal is sent into transmission cable.

Sensor 12 is the 1-8 road senser element of drive test amount temperature or pressure, humidity, flow etc. at the most.

During this patrol measuring transmission device work, turn on the power switch, control circuit enters the work period, sends clear command to each several part earlier, and this clear command carries out zero clearing along transmission cable to each code translator.After quenching pulse finishes, control circuit sends acquisition instructions and sends the pulse of passage strobe sequence along transmission line to code translator in certain sequence, receive the corresponding code translator in instruction back, control corresponding end output noble potential, with its corresponding simulating switch connection, with the data of this passage adopt into, and carry out analog to digital conversion along the A/D translation circuit that transmission line is delivered to controller.Signal after the conversion send printer prints or send computing machine to carry out data processing or warning etc.Press the command decoder strobe pulse constantly with each passage gating, data are imported general control system through transmission line.

This device adopts but unit cable is realized multiple spot multichannel tour inspection, its compact conformation, advanced in performance, installation and debugging are easy to maintenance, can be widely used in the measurements such as industry temperature and humidity, pressure, flow such as grain warehouse, oil, chemical industry, light industry.

Claims (2)

1, a kind of only cable multichannel patrol measuring transmission device, it is characterized in that this device is by a transmission cable 9 and control circuit 1, A/D translation circuit 2, interface circuit 4, warning circuit 7, road mark counter 3, computing machine 5, printer 6, connector 8, code translator 10, gathering switch 11 forms, control circuit 1 connects transmission cable 9, cable 9 is also through A/D translation circuit 2 joining interface circuit 4, interface circuit 4 is connected with computing machine 5 respectively, printer 6 and warning circuit 7, road mark counter 3 is joining interface circuit 4 also, the other end of cable 9 connects code translator through connector 8 and plays 10, gather switch 11.

2, transmitting device according to claim 1 is characterized in that:

A, transmission cable 9 are the cable of five core leads,

B, control circuit 1 are made up of basic pulse generator IC20, pulsqe distributor IC11 and resistance R 17-22, R28-29, diode D3-10, triode BG7, capacitor C 3,

C, A/D translation circuit 2 are made up of extensive CMOS integrated circuit (IC) T, ternary four d flip-flop IC6, analog switch IC19 and resistance R 1-16, electric capacity D1-2, diode D1-2,

D, interface circuit 4 are made up of BCD2-10 system code translator IC3, electronic analog swtich IC1, IC2, IC4, IC5 and resistance R 57, capacitor C 10,

E, warning circuit 7 are made up of comparator circuit IC12, result treatment IC circuit 13, resistance R 30-49, diode D12-30, electric capacity D4-7, triode BG2, loudspeaker Y 1, K switch 1-3,

F, road mark counter 3 are made up of analog switch IC8, IC9, counter IC10 and resistance R 27,

G, connector 8 are made up of two 2-10 system synchronous counter IC17, double D trigger IC18 and resistance R 54-56, diode D27-28, two schmitt triggers,

H, code translator 10 are made up of pulse sequence divider IC15, resistance R 50-53, diode D23-26, capacitor C 11, triode BG3,

I, collection switch 11 are made up of Cmos integrated analog switch IC16,

J, computing machine 5 are single-chip microcomputer.

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