CN101881703A - Magnetic valve performance detecting system - Google Patents

Abstract

The invention relates to a magnetic valve performance detecting system which can conveniently detect the working process of a magnetic valve and evaluate the quality and the performance of the magnetic valve. The magnetic valve performance detecting system mainly comprises a voltage generator, a sensor, an A/D acquisition card, a computer and detection software and can detect, record, process and store the whole process of the work of the magnetic valve, including parameters, such as pressure values, working time, test time, rise time, fall time, rise delay time, fall delay time and the like. Through analysis and comparison on data, relevant parts of the magnetic valve and the quality of the whole magnetic valve are regulated and improved, thereby ensuring the product quality.

Description

Magnetic valve performance detecting system

Technical field

The present invention relates to a kind of magnetic valve performance detecting system, can detect the course of work of solenoid valve easily and estimate its performance.

Background technology

Solenoid valve is able to widespread use in all trades and professions, but the quality of magnetic valve performance and quality does not still have convenient, effective detection means at present, causes development, production and the use of solenoid valve all to be had a strong impact on and limit.

Summary of the invention

The objective of the invention is to, providing a kind of can observe, handle the overall process of solenoid valve work, and then the relevant parts of solenoid valve and even the quality of whole valve are detected, and adjusts accordingly and improved detection system.

The present invention is achieved in that mainly by being made of voltage generator, pressure transducer or induction pick-up, A/D capture card and detection software.Tested solenoid valve is connected with voltage generator; Pressure transducer or induction pick-up are connected with voltage generator; The signal output part of pressure transducer or induction pick-up is connected with the A/D capture card of computing machine.

Said voltage generator is made up of quartz crystal oscillator, variable frequency divider, dutyfactor adjustment circuit pulse width regulating circuit, impact damper, photoelectronic coupler, triggering power output stage, potentiometer.The quartz crystal oscillator produces the standard time pulse, exports needed frequency of operation by variable frequency divider; By dutyfactor adjustment circuit the dutycycle of signal is regulated; Regulate by the pulse width regulating circuit pulse-width; By impact damper output wave mode and shows signal; Trigger power output stage by photoelectronic coupler; Provide stable DC voltage by stabilized voltage supply, adjust output voltage values by potentiometer.

Voltage generator produces signal by a collection pulse generation, frequency division, accent circuit board wide, the buffering output of one; Provide square wave or step wave power output with stabilized voltage supply, in the two casing of packing into, configuration voltages, frequency indicator gauge and adjustment knob thereof on the panel, and input and output socket are formed the working signal that a voltage generator is supplied with solenoid valve; With pressure transducer or induction pick-up, the motion process of solenoid valve is converted into the change procedure of magnitude of voltage; With A/D card collection analog voltage signal and after being converted into digital signal, send into computing machine; Detection software with establishment voluntarily shows, writes down, handles and store testing result.Through analysis contrast, the performance of solenoid valve is made evaluation to testing result.

Detect software and carry out data acquisition and measurement by following program:

1) signalling channel setting---multichannel collecting also is arranged to passage and can be selected and change;

2) acquisition interval setting;

3) number of samples setting;

4) triggering and acquisition mode;

5) intercepting of curve and amplification---with mouse desire intercepting or the curve that amplifies are drawn into rectangle frame, measure the height or the width of rectangle frame again;

6) establish database for data storage, for profile memory is provided with file.

The invention has the beneficial effects as follows, can be under the prerequisite that does not change detected solenoid valve shape, structure, can detect the course of work of solenoid valve intuitively, easily and quickly and estimate its performance, for development, production and the use of solenoid valve provides quality testing and improved strong foundation.

Description of drawings

Fig. 1 is a voltage generator circuit principle calcspar;

Fig. 2 is the unitary construction synoptic diagram of detection system;

Fig. 3 detects the software agent functional schematic;

Fig. 4 detects software data to measure and the processing capacity synoptic diagram.

Fig. 5 detects the program synoptic diagram that software carries out data acquisition and measurement.

Embodiment

The present invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is a voltage generator circuit principle calcspar.Among the figure, produce the standard time pulse, by the needed frequency of operation of variable frequency divider 2 outputs (regulate with toggle switch, show) with frequency meter by quartz crystal oscillator 1; Dutycycle by 3 pairs of signals of dutyfactor adjustment circuit is regulated; Regulate by pulse width regulating circuit 4 pulse-width; By impact damper 5 output wave mode and shows signal; Trigger power output stage 7 by photoelectronic coupler 6; Provide stable DC voltage by stabilized voltage supply, adjust output voltage values by potentiometer 8, by voltage table display voltage value; Produce square wave or step signal that frequency, voltage and dutycycle can be adjusted thus.

The voltage generator of present embodiment,, buffering output wide by the pulse generation of a collection, frequency division, accent, optocoupler are the circuit board of one, and signal is provided; Provide power output with stabilized voltage supply.In the two casing of packing into, configuration voltages, frequency indicator gauge and adjustment knob thereof on the panel, and input and output socket.

Fig. 2 is the connection diagram of detection system each several part.In Fig. 2, tested solenoid valve 12 is connected with voltage generator 10, to obtain the solenoid valve operating voltage; Sensor 11 or 13 is connected with voltage generator 10, to obtain working sensor voltage; The signal output part of pressure transducer 11 (connecing the solenoid valve of pilot-gas) or inductosyn 13 (connecing only yarn pin valve) is connected with the A/D capture card of computing machine 9, variable signal is sent into computing machine write down and handle.

Fig. 3 detects the software agent functional schematic.Among the figure, the main functionality that detects software has: charge to curve function (comprising system parameter setting, two functions such as curve, intercepting and amplified curve of record), specific (special) requirements (hide a curve function) is checked and the report capability of past data is withdrawed from master routine function etc.

Parameter is provided with function and comprises: acquisition channel selection, acquisition interval setting, gather settings of counting, detection voltage and be provided with etc.

The recording curve function: click this button, computer data acquisition and with curve display on screen.

Intercepting and amplified curve function: intercept several waveforms to be measured, and make its amplification, to be convenient for measuring.

Hide a curve function: can square wave control signal u-t curve is hidden.

Report capability: can deposit the shape and the measurement result of survey curve in computing machine, also can access detection curve in the past and measurement data shows or printout.

Fig. 4 detects software curved measurement and data processing function synoptic diagram.Mainly comprise curved measurement, specific (special) requirements and data processing three partial functions.

Curved measurement mainly is pressure survey and time measurement function, can measure the parameter such as force value, working time, time of having a rest, rise time, fall time, rising delay time, fall delay time of curve.Cancel function and be meant that will intercept frame when the intercepting scope is improper cancels, so that intercepting again.

Remarks function in the specific (special) requirements can add explanation at remarks column, and hidden function can be hidden test data.

Data processing can deposit curve or measurement data in database, also can print output.

Fig. 5 detects the program synoptic diagram that software carries out data acquisition and measurement.Main program is:

1) signalling channel setting.The requirement of experiment multichannel collecting during making software, multichannel collecting and is arranged to passage and can selects and change.Capture card of the present invention has 16 passages available.

2) acquisition interval setting.Signal frequency is 11cps, about 90ms of cycle, and each is gathered 1000 points in cycle, and the time interval is 90us, and it is adjustable to be made as 20～1000us.

3) number of samples setting.Gather 1000 points by each in cycle, each 6～7 waveforms of recording curve, totally 6000～7000 points, and be made as 500～20000 adjustable.

4) triggering and acquisition mode.Adopt common acquisition mode programming, i.e. the programming of software trigger, software channel selecting.Trigger the A/D conversion by programmed instruction, select the A/D sampling channel arbitrarily by programmed instruction, this is a kind of working method more flexibly.

5) intercepting of curve and amplification.The method of employing picture rectangle frame promptly intercepts desire with mouse or the curve of amplification is drawn into rectangle frame, measures the height (survey maximum pressure) or the width (surveying the time interval) of rectangle frame again.

6) establish database (data file and storage folder) for the storage of data and curve.

Claims (3)

1. magnetic valve performance detecting system is characterized in that: be made up of voltage generator (10), pressure transducer (11) or induction pick-up (13), A/D capture card (9), detection software; Tested solenoid valve (12) is connected with voltage generator (10); Pressure transducer (11) or induction pick-up (13) are connected with voltage generator (10); The signal output part of pressure transducer (11) or induction pick-up (13) is connected with the A/D capture card (9) of computing machine.

2. according to the described magnetic valve performance detecting system of claim 1, it is characterized in that: said voltage

Give birth to device (10), form by quartz crystal oscillator (1), variable frequency divider (2), dutyfactor adjustment circuit (3), pulse width regulating circuit (4), impact damper (5), photoelectronic coupler (6), triggering power output stage (7), potentiometer (8); Quartz crystal oscillator (1) produces the standard time pulse, exports needed frequency of operation by variable frequency divider (2); By dutyfactor adjustment circuit (3) dutycycle of signal is regulated; Regulate by pulse width regulating circuit (4) pulse-width; By impact damper (5) output wave mode and shows signal; Trigger power output stage (7) by photoelectronic coupler (6); Provide stable DC voltage by stabilized voltage supply, adjust output voltage values by potentiometer (8).

3. according to the described magnetic valve performance detecting system of claim 1, it is characterized in that: detect software by

The program of stating is carried out data acquisition and measurement:

1) signalling channel setting---multichannel collecting also is arranged to passage and can be selected and change;

2) acquisition interval setting;

3) number of samples setting;

4) triggering and acquisition mode;

5) intercepting of curve and amplification---with mouse desire intercepting or the curve that amplifies are drawn into rectangle frame, measure the height or the width of rectangle frame again;

6) establish database for data storage, for profile memory is provided with file.

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