CN2874573Y - Intelligent unloading controller for powder material transport vehicle - Google Patents

Abstract

The utility model discloses an intelligent unloading controller of powdery material transport trolley. A microprocessor automatically detects air pressure of a storage tank and controls unloading valve state (open virgule close) relying on the stored control program. In addition, 24V auto power source provides operating power source for the controller system through an isolating PWM converter. An air pressure sensor is utilized to detect air pressure of the storage tank. Signals emitted by the air pressure sensor are firstly amplified by high-performance amplifier and then filtered and finally transmitted to the microprocessor through A virgule D converter. Moreover, control signals of the microcontroller are taken as pneumatic or motorized valve control signals after the photovoltaic isolation and power amplification. 5 paths of control output signal are available. Each drive output signal is added with isolated state detecting circuit and each valve is provided with isolated valve state detecting signal. Furthermore, the control program is compiled with assemble language or C language and adopts multiple branching construction based on finite automaton and message transmission system.

Description

The power material transporting vehicle intelligent unloading controller

Technical field

The utility model relates to a kind of embedded intelligence controller based on microprocessor, particularly a kind of power material transporting vehicle intelligent unloading controller.

Background technology

In daily movement operation, often run into the transportation of granular material, for example the transportation of cement, breeze and other Powdered industrial chemicals.Transportation with cement is an example, after cement is transported to the destination, the cement in the transport vehicle (Powdered) need be drawn off and the cement hold-up vessel of the construction site of packing in.Discharge process is generally: start air compressor, and after wait pressure rises to the value of regulation, manually opened discharge gate, under compressed-air actuated effect, the cement of powdery is seen from discharging and is discharged and the hold-up vessel of packing into.When discharge process proceeds to a certain degree, air pressure can reduce, remaining material can not continue to discharge in the transport vehicle, at this moment need to close discharge valve, after making air pressure be elevated to a certain value once more, open discharge valve again and draw off clout, through 1 after unload the clout process several times, cement in the transport vehicle tank body is unsnatched, and discharge process finishes.If the transport vehicle in two storehouses or many storehouses, its discharge process is complicated more, in unloading the clout process, need see tensimeter, constantly closes/opens different valves and pursue the storehouse and unload clout, and complicated operating process, time are long, and labour intensity is big, and poor stability.

Summary of the invention

The purpose of this utility model is to provide a kind of intelligent controller that microprocessor is used for power material transporting vehicle intelligent unloading control.

The principle of intelligent automatic discharging control is: form the intelligent unloading control system by embedded microcontroller and corresponding Control Software, pressure test device, pneumatic (or electronic) discharge gate driving circuit, valve etc.After transport vehicle arrives the destination, the operator is after connecting discharge pipe, only need to start air compressor, and press the discharging start button of this controller, whole discharge process just can be finished automatically: controller is carried out the discharging control program, detects air pressure automatically, reach a certain particular value after, open discharge valve, start discharge process.Monitor air pressure in real time at discharge process, after air pressure is lower than a certain value, begins to enter and unload the clout process, unload the clout process and monitor air pressure equally in real time, and be controlled condition with air pressure, control discharge gate open and close, up to finish unload clout till.After unloading the end of clout process, whole discharge process finishes, and provides sound and light signal then and reports to the police.

The utility model controller is made of the box body of microprocessor and peripheral circuit, baroceptor and signal Processing and translation circuit, pneumatic (or electronic) valve state Detection ﹠ Controling circuit, keyboard and display circuit, communication interface, the above control circuit of installation.Carry out the open and close that the Control Software that is stored in the program storage detects the pressure of storage tank automatically and controls discharge gate by microprocessor, thereby realize Based Intelligent Control discharge process.

The micro controller system working power is supplied by the isolated form pwm converter by the 24V automobile power source; After the signal process high performance amplifier amplification of baroceptor, the filtering, convert digital signal to by the A/D transducer and send microprocessor; After the control signal process photoelectricity isolation of microcontroller output, the power amplification,, totally 5 the tunnel control output signals, the load capacity of output signal: DC ,≤40V, 25A as the control signal of pneumatic or electrically operated valve; Each output signal end has all added the outputs state detection signal, and the valve state detection signal, so that guarantee the reliability controlled.

Control program uses assembly language or C language compilation, adopts the multiple-branching construction that transmits based on message, and program structure is simply clear, writes easily, debugging, function expansion.

In the automobile traveling process, this controller detects the state of discharge gate, guarantees valve closing, if state not to provide tangible sound and light signal; After detecting clutch coupling and leaving, connect discharge duct, started air compressor, press the discharging switch, enter discharging control procedure (also can be chosen in start the air plasticator then enter discharge process automatically).In the discharge process,, and control the open and close of discharge valve Fi (i=1,2) by setup program, finish the control of discharge process automatically according to air pressure by baroceptor monitoring atmospheric pressure state.

Description of drawings

Fig. 1 is the utility model electrical schematic diagram.

Fig. 2 implements circuit board mounting structure figure for the utility model.

Fig. 3 is guidance panel figure for the utility model front.

Fig. 4 is the utility model outside drawing.

Fig. 5 is the utility model side view.

Fig. 6 is the utility model master control program structural drawing.

Mark among the figure: 1. master control board; 2. drive plate; 3. keyboard and display board; 4. aerial lug; 5. power light; 6.3 position LED nixie display; 7. the working station indicator of valve F1; 8. the working station indicator of valve F2; 9. stop knob; 10. discharging starts knob; 11. valve F1 manually controls knob; 12. valve F2 manually controls knob.

Notes: light is isolated input and is used to detect the state that light is isolated output among Fig. 1, and the assurance output command can correctly be delivered to the Be Controlled object; The state-detection switch comprises: whether valve state, compressor start, whether vehicle advances etc.

Embodiment

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

With two storehouses cement transporter is example, as Fig. 1-shown in Figure 6.

This hardware circuit is a core with 51 series or PIC series microprocessor, adopts the three-plate type structure.(1) master control board 1: this circuit board is the core of whole intelligent controller, comprises microprocessor and related peripheral circuit, has 8 bit data bus and least-significant byte address bus interface, and address decoder provides the address decode signal of other interface; This circuit board also comprises simulating signal amplification and filtering circuit, A/D translation interface in addition, field-bus interface, and with the interface of drive plate 2 and keyboard and display board 3.Intelligent control software uses assembly language to write and be solidificated in the program storage of microprocessor internal.(2) drive plate 2: accept the control signal of master control board 1, after isolation and amplifying, as the drive signal of valve; Each drive signal output terminal all has the testing circuit of an isolation, and whether the Monitoring and Controlling output command correctly sends, and each valve also has the state detection circuit of an isolation, and whether the state and the identification control order that are used to detect valve are executed correctly.This circuit board also comprises the DC/DC transducer of an isolation, and being responsible for provides working power to master control borad 1 with showing version 3.(3) keyboard and display board 3: by operation push-button 9,10,11,12, LED power source pilot lamp 5, be used to indicate the dichromatic LED signal lamp 7,8 of valve state, be used to show air pressure and 37 segmentation LED of the failure message charactron 6 picked up is certainly formed.

The installation of circuit board as shown in Figure 2.Master control board 1 and drive plate 2 parallel installations, transmit power supply and signal by in-line connector, two vertical installations of version of finger-board 3 and this, use 90 ° of bent connectors directly to connect and transmit power supply and signal, the reliability that the signal transmission uses two docking points to be electrically connected with raising, except that connector, also be screwed between three circuit boards.

Guidance panel such as Fig. 3.Red power light 5 bright expression controller on power supplys; Knob the 11, the 12nd, the hand-operated forced discharging switch of valve F1, F2 is pressed, corresponding valve opening.Press 9 of stop buttons and stop discharge process, comprise that the discharging of hand-operated forced startup all uses this button to stop; Press discharging start button 10, " power takeoff " connected if controller detects, air compressor starts, and then starts automatic discharging control procedure; Dichromatic LED signal lamp 7,8 is used to indicate the state of discharge gate and discharge process, green bright expression valve opening, yellow bright expression valve closing, yellow/as greenly to replace bright and the unexpected misfortune acoustic alarm is arranged, the expression discharge process finishes, yellow is flashed and is followed three short acoustic alarms, the expression fault, and the fault numbering shows at the LED charactron.

The controller outside drawing as shown in Figure 4, side view is as shown in Figure 5.Outconnector 4 is used to connect the external detection switch and will controls the control coil that output signal is connected to valve.

Control Software uses assembly language to write, and uses the multiple-limb transfer organization of finite-state automata principle and message passing mechanism, makes the program structure simple and clear, is easy to write, safeguards, debugging expands with function.The control program main program structure as shown in Figure 6.

The function subprogram brief description is as follows: subroutine FUNi_SUB correspondence the value i of FUN=i.Currently use the low 4 of FUN, high four standby.

FUN0_SUB: detect vehicle whether in advancing, (1) if in advancing, and detecting valve state is

Incorrect, and state demonstration and warning mark are set, and keep FUN=0.(2) do not exist

In advancing, detect air compressor and whether start, 1. do not start, keep UN=0; 2.

Start, revise FUN=1, next circulation enters FUN1_SUB.

FUN1_SUB: monitoring air pressure P.(1) air pressure P＜P3 keeps FUN=1; (2) P 〉=P3 revises

FUN=2, next recursive call FUN2_SUB subroutine.

FUN2_SUB: open discharge valve F1, F2, the beginning discharging, and revise FUN=3.

FUN3_SUB: monitoring air pressure P.(1) P3 〉=P＞P2 keeps F1, and F2 opens, FUN=3; (2) P2

〉=P＞P1 closes F2, and F1 continues discharging, revises FUN=4.

FUN4_SUB: monitoring P, (1) P 〉=P1 keeps FUN=4; (2) P＜P1 closes F1, revises

FUN＝5。

FUN5_SUB: monitoring P, (1) P＜P2 maintains the statusquo; (2) P 〉=P2 opens discharge valve F2, repaiies

Change FUN=6.

FUN6_SUB: monitoring P, (1) P 〉=P1 maintains the statusquo; (2) P＜P1 closes F2, revises FUN=7.

FUN7_SUB: monitoring P, (1) P＜P2 maintains the statusquo; (2) P 〉=P2 opens discharge valve F1, unloads

1 storehouse clout is revised FUN=8.

FUN8_SUB: monitoring P, (1) P 〉=P1 maintains the statusquo; (2) P＜P1 closes F1, revises FUN=9.

FUN9_SUB: monitoring P, (1) P＜P2 maintains the statusquo; (2) P 〉=P2 opens discharge valve F2, unloads

2 storehouse clouts are revised FUN=10.

FUN10_SUB: monitoring P, (1) P 〉=P1 maintains the statusquo; (2) P＜P1 closes F2, revises FUN=11.

FUN11_SUB: discharging finishes, and F1, the Huang/blue flash of F2 pilot lamp glitter, and sends two long one short voice prompts,

Detect stop key.(1) press stop key, F1, F2 stop flicker, stop prompt tone;

Revise FUN=0.(2) do not press, maintain the statusquo.

FUN=12-15: do not use.

Claims (1)

1. a power material transporting vehicle intelligent unloading controller is characterized in that: carry out the control program of storing by microprocessor and detect storage tank air pressure automatically and control the discharge gate open and close, realize the Based Intelligent Control to discharge process; Controller is made of the box body of microprocessor and peripheral circuit, baroceptor and signal Processing and translation circuit, pneumatic or electrically operated valve control and state detection circuit, keyboard and display circuit, communication interface, the above control circuit of installation;

(1) carries out the open and close that the control program that is stored in the storer detects storage tank pressure and by-pass valve control automatically by microprocessor, thereby realize the Based Intelligent Control of discharge process;

(2) the micro controller system working power is provided through the isolated form pwm converter by the 24V automobile power source;

(3) utilize baroceptor to detect the pressure of storage tank; Send microprocessor processes after the signal process high performance amplifier amplification of sensor, filtering, the A/D conversion;

(4) after the control signal process photoelectricity isolation of microcontroller output, the power amplification, as the control signal of pneumatic or electrically operated valve; Totally 5 the tunnel control output signals, the load capacity of output signal: DC ,≤48V, 10A;

(5) each output signal end has all added the outputs state detection signal, and each valve all is provided with state detection signal, so that guarantee the reliability controlled;

(6) control circuit is divided into master control board (1), drive plate (2) and keyboard and (3) three circuit board modules of display board; Master control board (1), the parallel installation of drive plate (2) also utilize DIP connector to connect; Keyboard and display board (3) and master control board (1), the vertical installation of drive plate (2) directly connect by 90 degree connectors.

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