CN203116966U - Cylinder pressure detector based on single-chip microprocessor - Google Patents
Cylinder pressure detector based on single-chip microprocessor Download PDFInfo
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- CN203116966U CN203116966U CN 201220707674 CN201220707674U CN203116966U CN 203116966 U CN203116966 U CN 203116966U CN 201220707674 CN201220707674 CN 201220707674 CN 201220707674 U CN201220707674 U CN 201220707674U CN 203116966 U CN203116966 U CN 203116966U
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- cylinder pressure
- pressure detector
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- chip microcomputer
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Abstract
The utility model discloses a cylinder pressure detector based on a single-chip microprocessor. The cylinder pressure detector based on the single-chip microprocessor includes a pressure sensor installed in a cylinder. The pressure sensor is connected with the single-chip microprocessor through an A/D converter. The single-chip microprocessor is also connected with a display. The cylinder pressure detector based on the single-chip microprocessor has functions of collecting, analyzing, processing, displaying and the like and has advantages of small finished-product size, low cost, high precision, stable performance and the like.
Description
Technical field
The utility model relates to a kind of cylinder pressure detector, relates in particular to a kind of SCM Based cylinder pressure detector.
Background technology
Internal combustion engine is the heart of various diesel locomotives, is the motive power that drives wheel movement.Cylinder of internal-combustion engine is the hardware of a cylindrical shape sealing.Cylinder is the seedbed of realizing working cycle, producing power.Piston is to-and-fro movement in cylinder jacket, forms volume and makes the seal cavity that rule changes.Fuel is in this space internal combustion, and the gas power of generation promotes the piston motion.As seen, cylinder pressure is the important parameter that internal combustion engine runs well, by the test of cylinder pressure, and some most common failures of the internal combustion engine that can accurately form a prompt judgement out, therefore.Measure cylinder pressure and be the method for the disgnosizing internal combustion engine fault of a kind of not only simple but also science.
Traditional common pointer pressure precision is low, spoilage is high, and Cylinder Pressure of Internal Combustion Engine changes rapidly especially, showing as pointer at graduation apparatus acutely swings, the operation maintainer can't accurately judge force value, can only produce than mistake so inevitably according to amplitude of fluctuation and working experience estimated pressure scope of living in.
Summary of the invention
The purpose of this utility model is, a kind of SCM Based cylinder pressure detector is provided, and this device can effectively solve the accurate measurement problem of cylinder pressure.
In order to realize above-mentioned task, the utility model adopts following technical solution to be achieved:
A kind of SCM Based cylinder pressure detector comprises the pressure transducer that is installed in the cylinder, it is characterized in that described pressure transducer is connected with single-chip microcomputer by A/D converter, also is connected with display on single-chip microcomputer.
Other characteristics of the present utility model are:
Described single-chip microcomputer is selected the AT89C52 single-chip microcomputer.
Described A/D converter is selected the TLC0838A/D converter.
Described sensor is selected the AK-3 pressure transducer.
SCM Based cylinder pressure detector of the present utility model is core with the AT89C52 single-chip microcomputer, can gather in real time, analyzes, handles, function such as demonstration, has that finished-product volume is little, price is low, precision is high, steady performance.
Description of drawings
Fig. 1 is hardware block diagram of the present utility model.
Fig. 2 is the single-chip microcomputer main program flow chart
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
Referring to Fig. 1, present embodiment provides a kind of hardware configuration of SCM Based cylinder pressure detector, comprises the pressure transducer that is installed in the cylinder, and pressure transducer is connected with single-chip microcomputer by A/D converter, also is connected with display on single-chip microcomputer.
Owing to the unequal reason of piston wear can appear in cylinder in the course of the work, can cause the pressure inequality in the cylinder, so need carry out the collection of pressure signal to the many places in the cylinder.
Pressure signal at first is transformed into electric signal through pressure transducer, and the modulate circuit of signal is done amplification, filtering, isolation and protection processing to signal then.Signal after the processing is delivered to analysis and processing that single-chip microcomputer carries out signal after the A/D conversion, under the control of the supervisory routine in single-chip microcomputer, single-chip microcomputer shows gaging pressure by I/O mouth output signal at light-emitting diode display.
At last, a upper PC is arranged between tool car, this host computer shows the parameter value of the normal pressure information of cylinder and other each several parts of locomotive, maintenance person compares according to the gaging pressure of the cylinder pressure detector demonstration of present embodiment and each parameter of host computer, thereby comprehensively judges the locomotive failure reason.
Pressure transducer is a kind of sensor the most commonly used in the industrial practice, and it is widely used in various industrial robot control system(RCS)s, relates to numerous industries such as water conservancy and hydropower, railway traffic, intelligent building, production automatic control.Strain pressure transducer has low price and high precision and better linearity characteristic, is the sensor that is most widely used.In the present embodiment, the AK-3 pressure transducer of employing is exactly the sensor of this type, and the signal that the pressure signal that sensor detects is exported sensor through A/D converter amplifies, linearization, becomes standard signal, and formation can be connected with computer system.This pressure unit is simple in structure, compact, and shell is stainless steel material, and is corrosion-resistant and install more conveniently, and its range ability stable and reliable for performance is wide, be applicable to various dynamically, the pressure survey of static corrosion gas, liquid.
Single-chip microcomputer has been widely used in industrial automation control scene because it has powerful bit addressing function.At present popular at home is the MCS-51 series monolithic, and the MCS-51 series monolithic refers to the general name of a series of single-chip microcomputers of being produced by American I NTEL company, has comprised numerous kinds.Present embodiment is taken all factors into consideration cost and versatility, selects for use the AT89C52 single-chip microcomputer of atmel corp as core controller.AT89C52 single-chip microcomputer and 8051 instruction set and output pin function are compatible fully, have the erasable and programable memory of 8kB, do not need the extension storage space when constituting the cylinder pressure detector, and have abundant port controlling line.
Sensor is to the collection of survey data, and the pressure signal of physics is become the analog electrical signal of variation continuous in time, need carry out analog to digital conversion to the signal that collects, and handles i.e. A/D conversion for single-chip microcomputer.Present embodiment is selected the TLC0838A/D converter for use.It is a kind of successive approximation conversion, has the configurable hyperchannel Port Multiplier of input and serial I/O mode.
A upper PC is arranged between the tool car of diesel locomotive, be used for showing the parameter value of cylinder pressure information and other each several parts of locomotive, thereby comprehensively judge the locomotive failure reason.
The major function of the master routine of AT89C52 single-chip microcomputer is that pressure is sampled, the regulation timing sampling once, after single-chip microcomputer starts the A/D conversion, under interrupt mode, carry out the pressure acquisition subroutine, read the A/D value, the storage data arrange A/D and change the sign that finishes, for the master routine inquiry, in display, send pressure data in real time.The data acquisition subroutine flow chart as shown in Figure 2.
Claims (4)
1. a SCM Based cylinder pressure detector comprises the pressure transducer that is installed in the cylinder, it is characterized in that described pressure transducer is connected with single-chip microcomputer by A/D converter, also is connected with display on single-chip microcomputer.
2. SCM Based cylinder pressure detector as claimed in claim 1 is characterized in that, described single-chip microcomputer is selected the AT89C52 single-chip microcomputer.
3. SCM Based cylinder pressure detector as claimed in claim 1 is characterized in that, described A/D converter is selected the TLC0838A/D converter.
4. SCM Based cylinder pressure detector as claimed in claim 1 is characterized in that, described sensor select AK ?3 pressure transducers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220707674 CN203116966U (en) | 2012-12-19 | 2012-12-19 | Cylinder pressure detector based on single-chip microprocessor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220707674 CN203116966U (en) | 2012-12-19 | 2012-12-19 | Cylinder pressure detector based on single-chip microprocessor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203116966U true CN203116966U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220707674 Expired - Fee Related CN203116966U (en) | 2012-12-19 | 2012-12-19 | Cylinder pressure detector based on single-chip microprocessor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203116966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082594A (en) * | 2019-06-13 | 2020-12-15 | 王建军 | Intelligent monitor for cylinder in metallurgical industry |
-
2012
- 2012-12-19 CN CN 201220707674 patent/CN203116966U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082594A (en) * | 2019-06-13 | 2020-12-15 | 王建军 | Intelligent monitor for cylinder in metallurgical industry |
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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: 20130807 Termination date: 20131219 |