CN2744684Y

CN2744684Y - Three-car interlocked control system for coke oven

Info

Publication number: CN2744684Y
Application number: CN 200420070027
Authority: CN
Inventors: 殷甦; 薛德金; 于光; 戴军
Original assignee: SHENYANG HEAVY INDUSTRY ELECTRIC APPLIANCES MANUFACTURING Co Ltd
Current assignee: SHENYANG HEAVY INDUSTRY ELECTRIC APPLIANCES MANUFACTURING Co Ltd
Priority date: 2004-07-27
Filing date: 2004-07-27
Publication date: 2005-12-07
Anticipated expiration: 2014-07-27

Abstract

The utility model provides a three-car interlocked control system for coke oven, comprising a central processing unit composed of a single-chip computer, an application programmable controller, a memory, an oscillator, a communication interface, etc. The three-car interlocked control system for coke oven is also provided with a signal collection input unit, an address input unit, a keyboard display unit and an analog signal output unit. The output port of the signal collection input unit is connected to the input port of the central processing unit; the address input unit is connected to the central processing unit; the output port of the central processing unit is respectively connected to the input port of a relay output unit, the analog signal output unit and a communication interface unit; the interface of the keyboard display unit is connected to the interface of the central processing unit. The three-car interlocked control system for coke oven can test the actual position of the coke oven and can display the direction and operating state of the coke oven with multiple functions; the three-car interlocked control system for coke oven solves the problem of three-car automatic move and accurate aligning with interlocking and control function; with simple operation and convenient maintenance, the production site of the three-car interlocked control system for coke oven is finished by operators pressing buttons, which achieves the accuracy, high reliability and practicability of production sequential process.

Description

Coke oven three car interlock control apparatus

Technical field

The utility model belongs to the Controlling System of using on a kind of coking industry, especially for walk automatically a kind of coke oven three car interlock control apparatus of contraposition and coke pushing interlocked control of three cars.

Background technology

The most of coke-oven plant of China is manually control walking aspect the coke vehicle contraposition at present, the eye-observation location, adopt the carrier communication contact method, the mode of more useful artificial flute pendulum flag realizes three cars interlocking, its shortcoming is that the driver utilizes the carrier communication conversation can not reflect whether coke vehicle aims the place, and current telephone exists electricinterference and the undistinguished problem of driver still more.

The utility model content

The purpose of this utility model provides the control device that a kind of three cars are walked automatically, accurate contraposition has the interlocked control function, the workman only needs simple button just can realize production process, not only reduces labour intensity, and avoids causing red Jiao to land accident, exempt unnecessary waste, cut down expenses.

To achieve these goals, the technical scheme main points that the utility model provides are: use programmable controller (being PLC), adopt minitype single-chip Computer Control Technology (being micro-chip), and advanced photoelectric coding sensing technology, a yard technology is read in passive noncontact with TI, with the pulse signal of photoelectric encoder and the address signal of TI code reader is input signal, processing by micro-chip, show the position at place and on request to the PLC feed signals, PLC realizes walk the automatically purpose of contraposition interlocked control of coke oven three cars according to the operation of the position control motor at place and with other car by unlimited communication; Former cause professional and technical personnel is examined manually operated substandard complex operations with observing, change the production scene into and finish by the common operating personnel button.To realize accuracy, high efficiency, practicality, the professional control of production sequence flow.

The technical scheme that the utility model provides is: it comprises by micro-chip, uses the central processing unit that programmable controller, storer, vibrator, communication interface etc. connect and compose, and it is characterized in that: it also is provided with signals collecting input block, address input unit, keyboard display unit and simulating signal output unit; Signals collecting input block delivery port is connected with the central processing unit input aperture, address input unit connects central processing unit by interface, the central processing unit delivery port is connected with rly. output unit, simulating signal output unit and communication interface unit input aperture respectively, and the keyboard display unit interface is connected with cpu interface.

Above-mentioned signals collecting input block is made up of photoelectric encoder and signal preposing signal process circuit, and photoelectric encoder connects controlled plant; The signal preposing signal process circuit is to be connected and composed by interface, photoelectrical coupler, reverse Schmidt trigger and resistance, the square-wave signal that photoelectric encoder is gathered by controlled plant by reverse Schmidt trigger shaping, is imported the centre routine processing unit through the interface input optocoupler then;

Address input unit is to be connected and composed by TI card reader, communication unit, electric capacity, and the TI card reader is given centre routine processing unit by communication unit with numerary signal with the address of reading.

The simulating signal output unit is made up of Digital To Analog Convert, V/I umformer, electric capacity, at first micro-chip sends numerary signal and gives Digital To Analog Convert, Digital To Analog Convert becomes numerary signal into simulating signal and gives the V/I umformer, and the V/I umformer sends international simulating signal 4-20mA;

Keyboard display unit is by display driver circuit, shows that charactron, resistance, photodiode and button connect and compose, at first micro-chip is given display driver circuit with numerary signal and is made its work, and display driver circuit drives and shows charactron display digit and conducting diode displaying working order; Micro-chip is in parallel with resistance and button, and button is given micro-chip by the storage battery of going to the bottom, and micro-chip obtains input signal.

Using the programable control unit is to be connected and composed by micro-chip, application programmable controller and communication module; Micro-chip connects uses programmable controller, and the communication port of using programmable controller links to each other with the communication port of communication module.

The utlity model has following advantage: 1, can measure actual position and energy display direction and working order, have multiple functions such as rly. output, analog quantity output, communication interface; 2, solved that three cars are walked automatically, accurately contraposition has the interlocked control function; 3, have simple to operately, easy to maintenance, will examine manually operated substandard complex operations, change the production scene into and finish by the common operating personnel button with observing.To realize accuracy, high efficiency, practicality, the professional control of production sequence flow.

Description of drawings

Fig. 1 is a schematic block circuit diagram of the present utility model.

Fig. 2 is a signals collecting input-cell circuitry functional block diagram.

Fig. 3 is a signals collecting input-cell circuitry schematic diagram.

Fig. 4 is the address input unit schematic circuit diagram.

Fig. 5 is simulating signal output unit schematic circuit diagram.

Fig. 6 is the keyboard display unit schematic circuit diagram.

Fig. 7 is PLC control unit schematic circuit diagram.

Embodiment

The utility model concrete structure is as follows; See Fig. 1, the overall circuit structure: signals collecting input block delivery port connects the central processing unit input aperture, address input unit is connected with the central processing unit communication port, cpu interface is connected with PLC control unit interface with the keyboard display unit interface respectively, and the central processing unit delivery port is connected with the simulating signal output unit.

See Fig. 2,3, above-mentioned signals collecting input block is made up of photoelectric encoder and signal preposing signal process circuit.The signal preposing signal process circuit is made up of interface P1, photoelectrical coupler T1, T2, reverse Schmidt trigger E1 (1-3) and resistance R 7-R10, photoelectric encoder inputs to the photoelectrical coupler T1, the T2 that are connected with resistance R 7-R10 by the square-wave signal of controlled plant collection through P1 and isolates shaping, send reverse Schmidt trigger E1 negate after the signal processing, import INT1, INT0, the T0 mouth of the micro-chip of centre routine processing unit then.

See Fig. 4, address input unit is made up of TI card reader, communication unit MAX202, capacitor C 4-C7, the TI card reader is delivered to TOUT and the RIN mouth of communication unit MAX202 with the form of one group of data volume by the RS-232 mouth with the address of reading, and MAX202 is connected interface TIN respectively with TXD with the interface RXD of micro-chip with ROUT.

See Fig. 5, the simulating signal output unit is by Digital To Analog Convert TLV5636, V/I transmodulator AD694, capacitor C 8, C9 forms, micro-chip P04 at first, P05, the P06 mouth sends the DIN that numerary signal is given Digital To Analog Convert TLV5636 respectively, SCLK, the PS mouth, the VDD mouth of TLV5636 connects+and 5, CS and AGND ground connection, OUT meets AD694 and C8, another pin ground connection of C8, the 10V FORCE of transmodulator AD694 and 2V SENCE short circuit, FB and IN-short circuit, VS links to each other with+24 with C9, another pin of 4mA ON/OFF and C9 links to each other with ground, the 10UT end sends international simulating signal 4-20mA.

See Fig. 6, keyboard display unit is by display driver circuit LA-LI, shows that charactron LED1-LED8, resistance R 20-R27, photodiode L1-L4 and button K1-K4 connect and compose, at first RCK, SRCLK, SRCK, the SER mouth of display driver LA-LI given numerary signal by micro-chip by the P00-P03 mouth, make LA-LI work, driving mechanism LA-LH (QA-QG) gives numerary signal and shows charactron LED1-LED8 (A-G); Charactron LED1-LED8 display digit; Driving mechanism LI connects with photodiode L1-L4, resistance R 24-R27; Numerary signal conducting diode displaying working order; Micro-chip P20-P23 mouth is in parallel with resistance R 20-R23, button K1-K4, and button is pressed, and micro-chip obtains input signal.

See Fig. 7, the PLC control unit is made up of micro-chip P12-P14 mouth, the I0-I2 mouth of PLC, communication module; Micro-chip P12-P14 mouth links to each other with the I0-I2 mouth of PLC, and the communication port RS-484 of PLC links to each other with communication module RS-485.

Principle of work, during work, workman's button is given numerical value by keyboard display unit the micro-chip of central processing unit as the square-wave signal of given photoelectric encoder by the controlled plant collection, after the signal preposing signal process circuit is isolated shaping, import in the micro-chip of central processing unit, micro-chip is by being solidificated in the system controller in the storer, input signal is carried out plus-minus counting, numerical value and set-point are compared, give PLC with result relatively, PLC controls the direction of travel of car according to the result, the starting and stop, the TI card reader will be read the micro-chip that central processing unit is given in the address, micro-chip is just being imitated the parking stall according to the system controller in the storer, meanwhile PLC has realized coke oven three car interlocked control by communication module and other car interlocking.

Claims

1, a kind of coke oven three car interlock control apparatus, it comprises by micro-chip, uses the central processing unit that programmable controller, storer, vibrator, communication interface etc. connect and compose, and it is characterized in that: it also is provided with signals collecting input block, address input unit, keyboard display unit and simulating signal output unit; Signals collecting input block delivery port is connected with the central processing unit input aperture, address input unit connects central processing unit by interface, the central processing unit delivery port is connected with rly. output unit, simulating signal output unit and communication interface unit input aperture respectively, and the keyboard display unit interface is connected with cpu interface.

2, coke oven three car interlock control apparatus according to claim 1, it is characterized in that: the signals collecting input block is made up of photoelectric encoder and signal preposing signal process circuit, and photoelectric encoder connects controlled plant; The signal preposing signal process circuit is to be connected and composed by interface, photoelectrical coupler, reverse Schmidt trigger and resistance, the square-wave signal that photoelectric encoder is gathered by controlled plant by reverse Schmidt trigger shaping, is imported the centre routine processing unit through the interface input optocoupler then.

3, coke oven three car interlock control apparatus according to claim 1, it is characterized in that: address input unit is to be connected and composed by TI card reader, communication unit, electric capacity, and the TI card reader is given centre routine processing unit by communication unit with numerary signal with the address of reading.

4, coke oven three car interlock control apparatus according to claim 1, it is characterized in that: the simulating signal output unit is to be connected and composed by Digital To Analog Convert, V/I umformer, electric capacity, micro-chip sends numerary signal and gives Digital To Analog Convert, Digital To Analog Convert becomes numerary signal into simulating signal and gives the V/I umformer, and the V/I umformer sends international simulating signal 4-20mA.

5, coke oven three car interlock control apparatus according to claim 1, it is characterized in that: keyboard display unit is by display driver circuit, shows that charactron, resistance, photodiode and button connect and compose, micro-chip is given display driver circuit with numerary signal and is made its work, and display driver circuit drives and shows charactron display digit and conducting diode displaying working order; Micro-chip is in parallel with resistance and button, and button is given micro-chip by the storage battery of going to the bottom, and micro-chip obtains input signal.

6, coke oven three car interlock control apparatus according to claim 1 is characterized in that: using the programable control unit is to be connected and composed by micro-chip, application programmable controller and communication module; Micro-chip connects uses programmable controller, and the communication port of using programmable controller links to each other with the communication port of communication module.