CN2699634Y - Laser leveler control device - Google Patents
Laser leveler control device Download PDFInfo
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- CN2699634Y CN2699634Y CN 200420049934 CN200420049934U CN2699634Y CN 2699634 Y CN2699634 Y CN 2699634Y CN 200420049934 CN200420049934 CN 200420049934 CN 200420049934 U CN200420049934 U CN 200420049934U CN 2699634 Y CN2699634 Y CN 2699634Y
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- land leveling
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Abstract
The utility model discloses a laser leveler control device, which comprises an operating panel, a hardware circuit and a casing; the hardware circuit comprises an input signal processing circuit, a microprocessor system, an indicating lamp drive circuit, an interlock circuit, a first output unit, a second output unit, a relay drive circuit, a first relay circuit, a second relay circuit, a power circuit and an automatic / manually coarse flat / fine flat switch; the microprocessor system is composed of an SCM unit and a watchdog circuit connected with the SCM unit; a laser receiver is connected with the SCM unit through the input signal processing circuit; the signal output ends of the first and the second relay circuits are respectively connected with a hydraulic system. The intelligent control is realized by the microprocessor system of the utility model, the working efficiency is high and performance is stable; a laser command system can be formed by the laser leveler control device matched with the corresponding laser transmitter and laser receiver, and the leveling working of the dry farmland and the paddy field can be conducted.
Description
Technical field
The utility model relates to a kind of controller, particularly relates to a kind of laser land leveling machine controller.
Background technology
China is large agricultural country, and agricultural water accounts for 75.3% of national water consumption, and surface irrigation is the main method of China's agricultural irrigation, improves the farmland flat condition, can improve the field irrigation water use efficiency greatly.
The land readjustment method comprises conventional level land method and laser controlled leveling method.The equipment that conventional level land method adopts has bulldozer, scraper and Slicking apparatus, have big, the relatively low characteristics of level land expense of cubic metre of earth migration quantity, be suitable for the relatively poor thick flat operation in farmland of bigger, the original smooth degree of surface relief, can change the macrorelief in farmland.
Because leveling effect mainly depends on the construction precision of bulldozer and Slicking apparatus, is subjected to equipment self defective and manually-operated the influence, conventional level land method is difficult to further improve after reaching certain smooth precision.The laser controlled leveling technology is to utilize the laser beam reference plane as non-vision control device, replaces conventional level land equipment operator's range estimation judgement, controls the lifting that hydraulic control system realizes the level land shovel automatically, reaches meticulous purpose of leveling land.Its application can increase substantially the land readjustment precision, and the accurate 10-50 of hand-hydraulic regulating system that the sensitivity of its receiving system is judged hands-operation personnel pacifically than the artificial vision at least doubly.The laser controlled leveling operating efficiency is higher, suits to finish the farmland surface essence on the thick flat basis of routine and puts down, and further improves the smooth precision in farmland.
In the prior art, the controller in the laser flatting machine all adopts analog circuit to realize its function, and precision is not easy control, also is unfavorable for the function expansion.
The utility model content
The purpose of this utility model is to provide a kind of laser land leveling machine controller at existing shortcoming of the controller in the laser flatting machine or deficiency.The utility model adopts microprocessor system to realize Based Intelligent Control, high efficiency, and stable performance is easy to the function expansion, handled easily.
The purpose of this utility model is achieved through the following technical solutions:
A kind of laser land leveling machine controller comprises control panel, shell and hardware circuit; Described hardware circuit comprises input signal treatment circuit, microprocessor system, first output unit, second output unit, interlock circuit, first relay circuit, second relay circuit and the power circuit of power supply is provided to hardware circuit.
Described microprocessor system comprises a single machine unit and the watchdog circuit that is connected with single machine unit; The signal output part of described input signal treatment circuit is connected with the signal input part of described single machine unit; Described single machine unit is connected with first output unit, second output unit respectively by two holding wires.
The signal input part of described interlock circuit is connected with the signal output part of first output unit, second output unit respectively, and its signal output part is connected with the signal input part of relay drive circuit; Described relay drive circuit signal output part is connected with the signal input part of first relay circuit, second relay circuit respectively; The signal output part of described first relay circuit, second relay circuit is connected with hydraulic system.
The CPU of described single machine unit is embedded chip AT89S51, described watchdog circuit by MAX813 as watchdog chip, the 5th pin PFO of described MAX813 is unsettled, and the 6th, 7 pin WDI, RESET connect the 28th pin P2.7 and the 9th pin RESET of described AT89S51 respectively.
Described drive circuit of indicator adopts the driving element of triode 9013 as indicator lamp; described relay drive circuit adopts the driving element of triode 9013 as relay, and described first, second relay circuit comprises solid-state relay SSR and by parallel connection constitutes with piezo-resistance again after resistance, the capacitances in series holding circuit.
Described interlock circuit comprises a slice 74LS04, a slice 74LS32 and a slice the one 74LS08, a slice the 2nd 74LS08; The 1st pin of the one 74LS08 is connected with the 25 pin P2.4 of AT89S51 respectively and 24 pin P2.3 with the 5th pin; 2,4 pins of the one 74LS08 connect the 8th pin of 74LS04; The 3rd, 6 pins of the one 74LS08 connect 1,4 pins of 74LS32 respectively; 1 pin of the 2nd 74LS08 connects 3 pins of 74LS32 and 1 pin of 74LS04; 5 pins of the 2nd 74LS08 connect 6 pins of 74LS32 and 3 pins of 74LS04; 2 pins of the 2nd 74LS08 connect 4 pins of 74LS04.
Described power circuit adopts power supply stabilization circuit, and LM317 constitutes mu balanced circuit by the three-terminal voltage-stabilizing chip.
The utility model also comprises the drive circuit of indicator that is connected with indicator lamp, and the signal input part of described drive circuit of indicator is connected with single machine unit.
The utlity model has automatic/hand, switch is changed in thick flat/smart truncation, manual ringing can be imported described first, second output unit with automatic signal by the switching of switch and participate in control in real time.
Laser pickoff is connected with controller of the present utility model with 2 power lines by 4 holding wires, and controller is by 2 holding wire output control signals.
Compare with the controller in the existing laser flatting machine, the utility model has following advantage:
1, adopt the CPU of AT89S51 as system, this chip not only has all characteristics of MCS51 series microprocessor, and chip integration becomes to have the electric erasing flash memory (Flash ROM) of 2K byte.This chip can be handled the signal from laser pickoff easily, exports two path control signal then.This chip has hardware resource galore, by suitable change program, can carry out the function expansion easily.
2, adopt watchdog circuit to make system works more stable, because the utility model work under bad environment for preventing that the phenomenon of system in case of system halt or program fleet takes place in various interference in the environment, has designed watchdog circuit, can avoid the generation of above-mentioned phenomenon effectively, make system works stable.
3, the hardware interlock circuit can guarantee on hardware that the two-way output signal has only one the tunnel to be high level, prevents two-way output and takes place for the situation that high level damages hydraulic system simultaneously.
4, easy to use, the present invention adopts the guidance panel design of succinct practicality, has power switch, manual, the manual rising/change-over switch that manually descends, and the operator can easily operate.
By such scheme as can be known, the utility model adopts microprocessor system to realize Based Intelligent Control, high efficiency, stable performance, the precision height, can with corresponding generating laser and the supporting composition laser control system of laser pickoff, carry out dry land or paddy field grading operation, and the utility model is cheap, and is easy to operate, is fit to little plot, China rural area and can uses by supporting middle fraction horsepower tractor simultaneously.
Description of drawings
Fig. 1 is the utility model theory diagram;
Fig. 2 is the utility model software flow pattern;
Fig. 3 is the utility model circuit theory diagrams.
Embodiment
Below, also with reference to the accompanying drawings the utility model is described in further detail by embodiment.
Referring to Fig. 1 is the utility model theory diagram, hardware circuit of the present utility model receives the signal that sends out from laser pickoff, pass to single machine unit after the processing of this signal process input signal treatment circuit, single machine unit is judged according to the signal that receives and is sent two path control signal, two path control signal is respectively through first, second output unit, pass through interlock circuit, relay drive circuit again, control first relay, second relay respectively, controlled hydraulic system produced action after first relay, second relay were received control signal.
By the switching of automatic/hand change-over switch, manual ringing can participate in control through first, second output unit respectively in real time simultaneously.The automatic/hand change-over switch is pushed manual position, by the dividing potential drop effect, in conjunction with referring to Fig. 3,74LS04 the 9th pin is input as high level, 74LS04 the 8th pin is output low level then, again because therefore the 2nd being connected with the 4th pin of 74LS04 the 8th pin and a 74LS08, can shield the output signal from the 24th, 25 pins of AT89S51.The automatic/hand change-over switch is pushed manual position, by the dividing potential drop effect, the 10th, 12 pins of the one 74LS08 are input as high level, then manual rising/switch manually descends by stirring, dividing potential drop effect through resistance, the 9th, 13 pins of the one 74LS08 are input as high level, and then the 8th of a 74LS08 the or 11 pins are output as high level, reach the purpose of manual control.The status signal that single machine unit is sent shows the height situation on ground and the duty of controller through drive circuit of indicator control indicator lamp.
Automatic/hand handoff functionality of the present utility model comprises manual, thick putting down/smart flat, and manual rising the/manual decline switched, and by pulling the change-over switch on the panel, can realize the switching of above-mentioned functions.
Referring to Fig. 2 is software flow pattern of the present utility model, during controller work, system at first carries out initialization, judges then to have or not the position signalling input, continues to judge if the no signal input is then returned, if being arranged, the signal input judges then whether this position signalling is wrong, if signal is wrong then to be returned, correctly then table look-up as if signal, then according to checking result, the output control signal is controlled hydraulic system, drives indicator lamp at last and shows the height situation on ground and the duty of the utility model controller.
The 1st, 2,3,4 pins (P1.0, P1.1, P1.2, P1.3) of AT89S51 receive the signal from receiver, signal represents ground too high, higher, high, flat, low, lower, too low respectively, after AT89S51 receives signal, the method that utilization is tabled look-up is judged the signal implication, makes corresponding processing respectively.As what receive is not above-mentioned signal, then is judged as wrongly, returns the signal that receives following one-period.
Fig. 3 is the utility model circuit theory diagrams, the AT89S51 single-chip microcomputer that CPU adopts American ATMEL to produce.This chip not only has all characteristics of MCS51 series monolithic, and chip integration becomes to have the electric erasing flash memory (FlashROM) of 2K byte, and price is low, at present one of higher monolithic movement of the ratio of performance to price.
This controller adopts the internal oscillator of single-chip microcomputer to add quartz crystal formation clock source, and crystal oscillation frequency is elected 12MHz as.
The utility model has used 10 I/O of AT89S51 altogether, and concrete operating position is as follows:
P1.0: connect 1 pin of LM339, link to each other with the 5V power supply by 4.7K resistance simultaneously;
P1.1: connect 2 pins of LM339, link to each other with the 5V power supply by 4.7K resistance simultaneously;
P1.2: connect 15 pins of LM339, link to each other with the 5V power supply by 4.7K resistance simultaneously;
P1.2: connect 16 pins of LM339, link to each other with the 5V power supply by 4.7K resistance simultaneously;
P2.0, P2.1, P2.2: be connected with indicator lamp by two-stage 9013 triodes, as the control signal of indicator lamp.
P2.3, P2.4: link to each other with 5,1 pin of a 74LS08 chip, behind interlock circuit,, export as control signal by solid-state relay through triode 9013 power amplifications.
P2.7: be connected with the 6 pin WDI of MAX813, as the input signal of watchdog chip.
Watchdog circuit adopts the MAX813 chip of MAX company in the controller, and this chip can provide the reset pulse of 200ms.Behind program fleet 1.6s, the house dog single-chip microcomputer that will reset restarts it.In addition, MAX813 also has the line under-voltage defencive function.PFO is unsettled for its 5th pin, and the 6th, 7 pin WDI, RESET connect the 28th pin P2.7 and the 9th pin RESET of AT89S51 respectively.
Interlock circuit is formed interlock circuit by a slice 74LS04,74LS32 and two 74LS08 (for difference, being denoted as a 74LS08, the 2nd 74LS08) in the controller.Like this, can guarantee on hardware that the two-way output signal has only one the tunnel to be high level, preventing two-way output is the high situation generation that damages hydraulic system simultaneously.The one 74LS08 the 1st pin is connected with 24 pin P2.3 with the 25 pin P2.4 of AT89S51 respectively with the 5th pin.2,4 pins of the one 74LS08 connect the 8th pin of 74LS04.3,6 pins of the one 74LS08 connect 1,4 pins of 74LS32 respectively.1 pin of the 2nd 74LS08 connects 3 pins of 74LS32 and 1 pin of 74LS04.5 pins of the 2nd 74LS08 connect 6 pins of 74LS32 and 3 pins of 74LS04.2 pins of the 2nd 74LS08 connect 4 pins of 74LS04.
Signal from laser pickoff is that high level is 5V, low level is the pulse signal of 2V, and the logical zero that single-chip microcomputer needs is the 0V Transistor-Transistor Logic level, so need handle to signal, system has adopted LM339 four input voltage comparators, four independently voltage comparators are equipped with in LM339 integrated package inside, and the characteristics of this voltage comparator are:
1) offset voltage is little, and representative value is 2mV;
2) supply voltage wide ranges, single supply are 2-36V, and dual-supply voltage is ± 1V-± 18V;
3) to comparing the internal resistance restriction broad of signal source;
4) common mode range is very big, is 0--(Ucc-1.5V) Vo;
5) differential input voltage range is bigger, and is big to equaling supply voltage;
6) the output current potential can be selected for use flexibly and easily.After comparator circuit was handled, signal was high level 5V, the pulse signal of low level OV.Constitute signal processing circuit by the LM339 chip, 1,2,15 are connected 1,2,3 and 4 pin P1.0, P1.1, P1.2 and the P1.3 of AT89S51 respectively with 16 pins.6,8,10,13 pins are connected with laser pickoff respectively.
The utility model adopts 9013 triodes to drive to the driving of relay and indicator lamp (rated voltage 12V).
When operating, connect signal input line, power line and output line earlier.Turn on the power switch, according to circumstances select manually or automated manner,, can rise or descend control by stirring manual rising/manual decline as adopting manual mode.
Controller uses very simple, and operating procedure is as follows:
Step 1, connected system
At first connect controller and receiver, power line is linked to each other with the 12V dc source, the two-way output signal is connected hydraulic valve with holding wire.The aviation interface of output (have 3 aviation interfaces on the controller, connect power line respectively, from the holding wire of generating laser and output to the output signal line of magnetic valve), the holding wire other end connects controller.
Step 2, open the power switch on the control panel;
Step 3, select the automatic/hand switch according to actual needs;
If the step 4 previous step has been selected manually, then select according to actual needs to rise or the decline switch.
It should be noted that at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (10)
1, a kind of laser land leveling machine controller comprises control panel, shell, it is characterized in that, also comprises hardware circuit;
Described hardware circuit comprises input signal treatment circuit, microprocessor system, first output unit, second output unit, interlock circuit, first relay circuit, second relay circuit and the power circuit of power supply is provided to hardware circuit;
Described microprocessor system comprises a single machine unit and the watchdog circuit that is connected with single machine unit;
The signal output part of described input signal treatment circuit is connected with the signal input part of described single machine unit;
Described single machine unit is connected with first output unit, second output unit respectively by two holding wires;
The signal input part of described interlock circuit is connected with the signal output part of first output unit, second output unit respectively, and its signal output part is connected with the signal input part of relay drive circuit;
Described relay drive circuit signal output part is connected with the signal input part of first relay circuit, second relay circuit respectively;
The signal output part of described first relay circuit, second relay circuit is connected with hydraulic system.
2, laser land leveling machine controller according to claim 1 is characterized in that, also comprises indicator lamp and the drive circuit of indicator that is connected with indicator lamp, and the signal input part of described drive circuit of indicator is connected with single machine unit.
3, laser land leveling machine controller according to claim 1 and 2, it is characterized in that, comprise that also automatic/hand, thick flat/smart truncation change switch, manual ringing can be imported described first, second output unit with automatic signal by the switching of switch and participate in control in real time.
4, laser land leveling machine controller according to claim 3 is characterized in that, the CPU of described single machine unit is embedded chip AT89S51, and as watchdog chip, described MAX813 is connected with AT89S51 described watchdog circuit by MAX813.
According to claim 1 or 2 or 4 described laser land leveling machine controllers, it is characterized in that 5, described drive circuit of indicator adopts the driving element of triode 9013 as indicator lamp.
6, laser land leveling machine controller according to claim 5 is characterized in that, described relay drive circuit adopts the driving element of triode 9013 as relay.
7, according to claim 1 or 2 or 4 or 6 described laser land leveling machine controllers; it is characterized in that; described first relay circuit comprises solid-state relay SSR and by the holding circuit that parallel connection constitutes with piezo-resistance again after resistance, the capacitances in series, described holding circuit is serially connected in the signal output part of solid-state relay SSR.
8, laser land leveling machine controller according to claim 7; it is characterized in that; described second relay circuit comprises solid-state relay SSR and by the holding circuit that parallel connection constitutes with piezo-resistance again after resistance, the capacitances in series, described holding circuit is serially connected in the signal output part of solid-state relay SSR.
9, laser land leveling machine controller according to claim 8 is characterized in that, described interlock circuit comprises a slice 74LS04, a slice 74LS32 and a slice the one 74LS08, a slice the 2nd 74LS08; The one 74LS08 is connected with AT89S51,74LS04,74LS32 respectively; The 2nd 74LS08 is connected with 74LS32,74LS04 respectively.
According to claim 1 or 2 or 4 or 6 or 8 or 9 described laser land leveling machine controllers, it is characterized in that 10, described power circuit adopts the power supply stabilization circuit that is made of three-terminal voltage-stabilizing chip LM317.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420049934 CN2699634Y (en) | 2004-04-26 | 2004-04-26 | Laser leveler control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420049934 CN2699634Y (en) | 2004-04-26 | 2004-04-26 | Laser leveler control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2699634Y true CN2699634Y (en) | 2005-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420049934 Expired - Fee Related CN2699634Y (en) | 2004-04-26 | 2004-04-26 | Laser leveler control device |
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| Country | Link |
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| CN (1) | CN2699634Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631168A (en) * | 2013-12-04 | 2014-03-12 | 中国飞机强度研究所 | Structural function test control device |
| CN109298672A (en) * | 2018-11-30 | 2019-02-01 | 苏州市航银机电有限公司 | A kind of level land machine controller |
-
2004
- 2004-04-26 CN CN 200420049934 patent/CN2699634Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631168A (en) * | 2013-12-04 | 2014-03-12 | 中国飞机强度研究所 | Structural function test control device |
| CN109298672A (en) * | 2018-11-30 | 2019-02-01 | 苏州市航银机电有限公司 | A kind of level land machine controller |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |