CN102288743A

CN102288743A - Intelligent oil quality analyzer

Info

Publication number: CN102288743A
Application number: CN201110104278XA
Authority: CN
Inventors: 胡壹军
Original assignee: Xi'an Aolan Electromechanical Technology Co Ltd
Current assignee: Xi'an Aolan Electromechanical Technology Co Ltd
Priority date: 2011-04-25
Filing date: 2011-04-25
Publication date: 2011-12-21

Abstract

The invention relates to an intelligent oil quality analyzer, which comprises a single-chip microcomputer. The first input of the single-chip microcomputer is connected with a keyboard, the fourth input of the single-chip microcomputer is respectively connected with the output ends of a first sensor and a second sensor through a signal processing circuit, the first output of the single-chip microcomputer is connected with a special liquid crystal display, the second input of the single-chip microcomputer is connected with a clock chip, the third input of the single-chip microcomputer is connected with a temperature sensor through a temperature compensation circuit, and the second output of the single-chip microcomputer is connected with a computer through a special RS232 interface wire. The invention has the advantage of accurate testing data, the intelligent oil quality analyzer is connected with the computer, the testing data can be transmitted rapidly, the efficiency of equipment management can be increased, the defects of the instrument database can be overcome, the oil rejection reference value provided in the database of the testing instrument can be corrected through the computer according to needs, historical testing data can be consulted at any time through the liquid crystal display, and the lubrication management can be facilitated.

Description

A kind of intelligent oil quality analyser

Technical field

The present invention relates to a kind of oil quality analyser, be specifically related to a kind of intelligent oil quality analyser.

Background technology

The instrument that is used for the lubricating oil quality testing at present, mainly contain HF-1,2 types that several families produce, THY series and the oil quality analyser of YYF series, above-mentioned each serial instrument can be tested fast at the dustiness with fluid, but there are the following problems: one, the data of test lubricating oil dustiness produce certain test error owing to be subjected to the influence of environment temperature; Two, the information that the displaying contents of liquid crystal display can not the tested lubricating oil of holographic reflection; Three, detecting instrument does not have and computer interface, can not satisfy the work requirements that user's self-healing is looked into.

Summary of the invention

In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of intelligent oil quality analyser, have the more accurate advantage of test data.

In order to achieve the above object, the technical scheme taked of the present invention is:

A kind of intelligent oil quality analyser, comprise single-chip microcomputer 1, first input of single-chip microcomputer 1 is connected with keyboard 2, the 4th input is connected with the output terminal of first sensor A, the second sensor B respectively by signal processing circuit 5, first output of single-chip microcomputer 1 is connected with special liquid crystal display 6, second input of single-chip microcomputer 1 is connected with clock chip 3, the 3rd input is connected with temperature sensor 4 by temperature-compensation circuit 9, and second output of single-chip microcomputer 1 is connected with computing machine 8 by RS232 interface industrial siding 7.

Described temperature-compensation circuit 9 comprises integrated temperature sensor U9,1 pin of temperature sensor U9 is connected by the in-phase input end of resistance R 38 and integrated operational amplifier U7D, 1 pin of temperature sensor U9 is also successively by resistance R 37, resistance R 40, resistance R 39 is connected with the reverse input end of integrated operational amplifier U7D, between the reverse input end of integrated operational amplifier U7D and output terminal, be parallel with resistance R 42, between the reverse input end of integrated operational amplifier U7D and output terminal, be parallel with capacitor C 26, one end of resistance R 41 is connected on the circuit between resistance R 40 and the resistance R 39, another termination power.

Owing to adopted temperature sensor and temperature-compensation circuit,, tested accurate purpose to reach for because the test error that temperature variation causes compensates; Owing to realized being connected with computing machine, the data of detection can transmit rapidly, reach information mutual communication, and resource sharing improves the efficient of equipment control work; The data message of newly purchasing oil product is standby in the database of detecting instrument by downloaded, the deficiency of having replenished instrumentation database; By computing machine the fluid that is provided in the detecting instrument database is scrapped the visual feelings correction of reference value; Can consult the historical summary of detection by LCDs at any time, for lubricating management work is offered help.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Fig. 2 is the circuit diagram of temperature-compensation circuit 9 of the present invention.

Embodiment

Below in conjunction with accompanying drawing the present invention is done detailed description.

With reference to Fig. 1, a kind of intelligent oil quality analyser, comprise single-chip microcomputer 1, first input of single-chip microcomputer 1 is connected with keyboard 2, single-chip microcomputer 1 is connected to operation keyboard, be used to import the oil product code name, oil product model etc., can also be according to the historical record of oil product code name inquiry measurement, the 4th the input by signal processing circuit 5 respectively with first sensor A, the output terminal of the second sensor B connects, first output of single-chip microcomputer 1 is connected with special liquid crystal display 6, second input of single-chip microcomputer 1 is connected with clock chip 3, and the 3rd input is connected with temperature sensor 4 by temperature-compensation circuit 9, and second output of single-chip microcomputer 1 is connected with computing machine 8 by RS232 interface industrial siding 7.

With reference to Fig. 2, described temperature-compensation circuit 9 comprises integrated temperature sensor U9,1 pin of temperature sensor U9 is connected by the in-phase input end of resistance R 38 and integrated operational amplifier U7D, 1 pin of temperature sensor U9 is also successively by resistance R 37, resistance R 40, resistance R 39 is connected with the reverse input end of integrated operational amplifier U7D, between the reverse input end of integrated operational amplifier U7D and output terminal, be parallel with resistance R 42, between the reverse input end of integrated operational amplifier U7D and output terminal, be parallel with capacitor C 26, one end of resistance R 41 is connected on the circuit between resistance R 40 and the resistance R 39, another termination power.

When temperature variation, the voltage on the resistance R 37 can change, and the in-phase amplifier of forming through operational amplifier U7D amplifies, and output signal AIN2 sends into the AD input port of single-chip microcomputer 1, through the AD conversion, can measure environment temperature.

Principle of work of the present invention is:

The first sensor A and the second sensor B insert signal processing circuit 5, splash into the absolute oil of equivalent as first sensor A and the second sensor B, common three, conditioning signal treatment circuit 5 makes the output of signal processing circuit 5 no signals, i.e. zeroing, with the absolute oil sherwood oil wiped clean in the second sensor B, splash into the tested fluid of equivalent, this moment, signal processing circuit 5 had signal output, and the size of signal output and the dustiness of tested fluid are proportional.

The signal output of signal processing circuit 5 enters the AD sample circuit of single-chip microcomputer 1, and the size of the digital signal of sampling out through calculating, can be calculated the size of soiling value, and show by LCD 6.

The soiling value that calculates and the fluid that pre-deposits are scrapped the reference value table and are compared, and can judge the oil of tested fluid, and demonstrate " well ", " may with " or " scrapping " with Chinese character.

Instrument can also be according to the data of twice measurement in front and back, calculate the water percentage of tested fluid, about 2 minutes of the time interval of twice measurement in front and back by formula.

Temperature sensor 4 can be measured the size of environment temperature, and the soiling value that calculates by 9 pairs of single-chip microcomputers 1 of temperature-compensation circuit compensates, and has eliminated the influence of environment temperature to measurement result.

Single-chip microcomputer 1 also is connected to clock chip 3, and the date shows in LCD 6, can also write down the time of measurement, provides convenience for test report is provided.

Single-chip microcomputer 1 is connected with computing machine 8 by RS232 interface industrial siding 7, the result who measures can be uploaded computing machine 8 and preserve; Simultaneously fluid can be scrapped reference value and download in the single-chip microcomputer 1, when increasing oil product newly, can easily fluid be scrapped reference value and download in the single-chip microcomputer 1.

Claims

1. intelligent oil quality analyser, comprise single-chip microcomputer (1), first input of single-chip microcomputer (1) is connected with keyboard (2), the 4th input by signal processing circuit (5) respectively and first sensor (A), the output terminal of second sensor (B) connects, first output of single-chip microcomputer (1) is connected with special liquid crystal display (6), it is characterized in that: second input of single-chip microcomputer (1) is connected with clock chip (3), the 3rd input is connected with temperature sensor (4) by temperature-compensation circuit (9), and second output of single-chip microcomputer (1) is connected with computing machine (8) by RS232 interface industrial siding (7).

2. a kind of intelligent oil quality analyser according to claim 1, it is characterized in that: described temperature-compensation circuit (9) comprises integrated temperature sensor U9,1 pin of temperature sensor U9 is connected by the in-phase input end of resistance R 38 and integrated operational amplifier U7D, 1 pin of temperature sensor U9 is also successively by resistance R 37, resistance R 40, resistance R 39 is connected with the reverse input end of integrated operational amplifier U7D, between the reverse input end of integrated operational amplifier U7D and output terminal, be parallel with resistance R 42, between the reverse input end of integrated operational amplifier U7D and output terminal, be parallel with capacitor C 26, one end of resistance R 41 is connected on the circuit between resistance R 40 and the resistance R 39, another termination power.