CN2913314Y - Diesel fork-lift truck combination instrument - Google Patents
Diesel fork-lift truck combination instrument Download PDFInfo
- Publication number
- CN2913314Y CN2913314Y CN 200620070827 CN200620070827U CN2913314Y CN 2913314 Y CN2913314 Y CN 2913314Y CN 200620070827 CN200620070827 CN 200620070827 CN 200620070827 U CN200620070827 U CN 200620070827U CN 2913314 Y CN2913314 Y CN 2913314Y
- Authority
- CN
- China
- Prior art keywords
- combination instrument
- lift truck
- microprocessor
- fork lift
- diesel fork
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Combined Controls Of Internal Combustion Engines (AREA)
- Instrument Panels (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The utility model discloses an internal combustion forklift combination instrument, which comprises a master slave mode microprocessor, a matching stepping motor, a dot-matrix liquid crystal display and a relay. The utility model can accurately instruct the working state of the forklift through the display of ways of graphics, figures, Chinese and English, and can carry out high-precision instructions and also can carry out comprehensive analysis to make real-time alarming and give instructions to the causes of the failures, thereby greatly improving the efficiency of repairing. The utility model can also stop the running of the engine under the state of emergency so as to avoid the damage of the engine and increase the service life of the engine.
Description
Technical field
The utility model relates to a kind of diesel fork lift truck combination instrument.
Background technology
At present, the diesel fork lift truck combination instrument is divided into moving magnet and digital, moving-magnet instrument causes change of magnetic field strength by using by the resistance of sensor that changes, and the mode that causes pointer to rotate to different angles is indicated, its technology falls behind relatively, precision is low, warning function is not enough and power consumption is big, is digitized combination instrument gradually and replaces.The indication form of digital instrument comprises luminotron bar, section formula liquid crystal display etc.; all be that the mode of utilizing segmentation to show is indicated; though these instrument have data acquisition precision preferably; but pointing accuracy; the mode of operation that can not accurately reflect fork truck; and the function that does not have shutting engine down to move, thereby can not protect fork truck well.
Summary of the invention
The utility model provides a kind of diesel fork lift truck combination instrument, and it can indicate the mode of operation of fork truck exactly, and can provide warning exactly when breaking down, and the operation of shutting engine down where necessary, thereby avoids the damage to fork truck and driving engine.
The technical solution of the utility model is as follows: a kind of diesel fork lift truck combination instrument, it comprises sensor, A/D converter, master microprocessor and telltale, the mouth of sensor is connected with the input end of A/D converter, the output line of A/D converter is connected with the input line of master microprocessor, the output line of master microprocessor is connected with telltale, described sensor comprises water temperature, oil level and oil temperature sensor, and described telltale is the dot lcd screen.
Described A/D converter adopts the support microprocessor with analog-digital conversion function, and the mouth of described sensor is connected with the input line of support microprocessor behind dividing potential drop and filter circuit; Data line between described support microprocessor and the master microprocessor is I
2C serial communication data line.
The utility model also is provided with driving circuit, and the input end of described driving circuit is connected with the mouth of master microprocessor, and the mouth of driving circuit is connected with indicator lamp, alarm lamp, buzzer phone or stepping motor respectively; The input line of master microprocessor is connected with switch signal line after photoelectricity is isolated; Switch signal line comprises oil pressure switch signal wire (SW), preheating switch signal wire (SW), brake switch signal wire (SW), pole changer signal wire (SW) and empty filter switch signal line; The driving circuit of master microprocessor drives relay, and the contact of described relay is serially connected on the control circuit of engine off device.
The utility model uses support microprocessor to realize the collection of analog signal and computing and the outage of data such as working hour is preserved, use master microprocessor to carry out that on-off signal detects and, adopt I between master microprocessor and the support microprocessor the driving of dot lcd screen, stepping motor, indicator lamp, alarm lamp, buzzer phone and relay
2The mode swap data of C serial communication.Because support microprocessor has analog-to-digital conversion module, survey precision is good, and has E
2PROM is fit to the writing task hour data very much.Master microprocessor has abundant I/O port and program store, can be according to measured on-off signal and the measurement data signals and the working hour data that come from support microprocessor, after carrying out comprehensive analyses, show working hour data and the indication of Chinese and English mode of operation by the dot lcd screen; And, accurately indicate the cooling water temperature and the fuel level of forklift engine respectively to the mode that stepping motor employing substep drives; The fork truck running state can be clearly indicated in driving to indicator lamp; When breaking down, master microprocessor can drive alarm lamp, buzzer phone is pointed out, and the mode by the Chinese and English demonstration shows the fault that is occurred on the dot lcd screen, drives relay in case of necessity, moves with shutting engine down.The utility model has been realized comparatively perfect functions of Forklift Combination Instrument with high performance-price ratio, by the master-slave mode microprocessor, cooperate stepping motor, dot lcd screen and relay, not only can accurately measure the running state of fork truck, and indicate accurately, can also carry out comprehensive analyses, provide in real time and report to the police and the fault cause indication, thereby greatly improved overhaul efficiency.The utility model also can move by shutting engine down under the emergency state, thereby avoids engine breakdown, improves the service life of driving engine.
Description of drawings
Fig. 1 is the schematic circuit diagram of the utility model embodiment
The specific embodiment
Embodiment: as shown in fig. 1, the utility model diesel fork lift truck combination instrument has the Switching Power Supply mu balanced circuit of overvoltage and overcurrent protection, can reduce the power consumption of instrument, and can provide stable+5V power supply for whole instrument; The signal of sensors such as water temperature, oil level and oily temperature is connected to support microprocessor PIC12F675 by electric resistance partial pressure and filter circuit, carry out the A/D conversion by PIC12F675, owing to provide the voltage of dividing potential drop consistent with the comparative voltage that carries out the A/D conversion, therefore can cancel out each other, thereby eliminate the influence of power supply the A/D transformation result.PIC12F675 contains inside the electrically alterable storage of high erasing and writing life, is used for the writing task hour data; Between support microprocessor PIC12F675 and master microprocessor AT89S52, use I
2C serial communication data line connects, be used for transmitting order and data, the AT89S52 master microprocessor can utilize serial communication like this, read signal data and working data that PIC12F675 collects, and gather through the on-off signal after the photoelectricity isolation, as the signal of the signal of oil pressure switch K1, pole changer K5, the signal of brake switch K3, the signal of preheating switch K2 or the signal of empty filter K switch 4 etc., thereby collect the running state of fork truck all sidedly.AT89S52 is through behind the comprehensive analyses, direct drive lattice lcd screen, show by figure, numeral, Chinese, English mode, make instrument to provide good indication to the mode of operation or the faulty condition of fork truck, good man computer interface is provided, and has had good commonality and Scalable Performance.AT89S52, makes stepping motor M1 and M2 drive pointer and indicates engine cooling water temperature and fuel level exactly by driving circuit drive stepping motor M1 and M2 according to the sensing data that receives PIC12F675.AT89S52 drives indicator lamp LED1, LED2 and alarm lamp LED3 according to the on-off signal that is collected by driving circuit, carries out the real time execution indication and the indication of reporting to the police.When breaking down by analysis, AT89S52 will drive buzzer phone FM and report to the police, and show faulty condition and reason on liquid crystal display, prompting and help maintenance fast.AT89S52 drives relay J by driving circuit, and the contact of described relay J is serially connected on the control circuit of engine off device.When the emergency state occurring, AT89S52 drives relay J, control engine off device, and the shutting engine down operation, thus the protection driving engine is not damaged.
Claims (7)
1, a kind of diesel fork lift truck combination instrument, it comprises sensor, A/D converter, master microprocessor and telltale, the mouth of sensor is connected with the input end of A/D converter, the output line of A/D converter is connected with the input line of master microprocessor, the output line of master microprocessor is connected with telltale, described sensor comprises water temperature, oil level and oil temperature sensor, it is characterized in that described telltale is the dot lcd screen.
2, diesel fork lift truck combination instrument according to claim 1, it is characterized in that described A/D converter adopts the support microprocessor with analog-digital conversion function, the mouth of described sensor is connected with the input line of support microprocessor behind dividing potential drop and filter circuit.
3, diesel fork lift truck combination instrument according to claim 2 is characterized in that the data line between described support microprocessor and the master microprocessor is I
2C serial communication data line.
4, diesel fork lift truck combination instrument according to claim 1, it is characterized in that it also is provided with driving circuit, the input end of described driving circuit is connected with the mouth of master microprocessor, and the mouth of driving circuit is connected with indicator lamp, alarm lamp, buzzer phone or stepping motor respectively.
5, diesel fork lift truck combination instrument according to claim 1, the switch signal line after it is characterized in that the input line of master microprocessor and isolating through photoelectricity is connected.
6, diesel fork lift truck combination instrument according to claim 5 is characterized in that switch signal line comprises oil pressure switch signal wire (SW), preheating switch signal wire (SW), brake switch signal wire (SW), pole changer signal wire (SW) and empty filter switch signal line.
7, diesel fork lift truck combination instrument according to claim 1 is characterized in that the driving circuit of master microprocessor drives relay, and the contact of described relay is serially connected on the control circuit of engine off device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070827 CN2913314Y (en) | 2006-03-30 | 2006-03-30 | Diesel fork-lift truck combination instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070827 CN2913314Y (en) | 2006-03-30 | 2006-03-30 | Diesel fork-lift truck combination instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2913314Y true CN2913314Y (en) | 2007-06-20 |
Family
ID=38167912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620070827 Expired - Fee Related CN2913314Y (en) | 2006-03-30 | 2006-03-30 | Diesel fork-lift truck combination instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2913314Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129826A (en) * | 2011-01-13 | 2011-07-20 | 科蒂斯仪器(中国)有限公司 | Circuit system of LCD (Liquid Crystal Display) module of solid combustion engine meter |
| CN103231656A (en) * | 2013-04-18 | 2013-08-07 | 江苏华骋科技有限公司 | Vehicle instrument based on internet of things |
| CN104176046A (en) * | 2014-09-12 | 2014-12-03 | 哈尔滨恒誉名翔科技有限公司 | Automobile combination instrument based on MC9S12XHY256 |
-
2006
- 2006-03-30 CN CN 200620070827 patent/CN2913314Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129826A (en) * | 2011-01-13 | 2011-07-20 | 科蒂斯仪器(中国)有限公司 | Circuit system of LCD (Liquid Crystal Display) module of solid combustion engine meter |
| CN102129826B (en) * | 2011-01-13 | 2013-05-29 | 科蒂斯仪器(中国)有限公司 | Circuit system of LCD (Liquid Crystal Display) module of solid combustion engine meter |
| CN103231656A (en) * | 2013-04-18 | 2013-08-07 | 江苏华骋科技有限公司 | Vehicle instrument based on internet of things |
| CN104176046A (en) * | 2014-09-12 | 2014-12-03 | 哈尔滨恒誉名翔科技有限公司 | Automobile combination instrument based on MC9S12XHY256 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070620 Termination date: 20130330 |