CN207924093U - A kind of test system for the maintenance of valve class - Google Patents
A kind of test system for the maintenance of valve class Download PDFInfo
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- CN207924093U CN207924093U CN201820377735.XU CN201820377735U CN207924093U CN 207924093 U CN207924093 U CN 207924093U CN 201820377735 U CN201820377735 U CN 201820377735U CN 207924093 U CN207924093 U CN 207924093U
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Abstract
The utility model provides a kind of test system for the maintenance of valve class, which includes host computer, parameter input unit, several signal output channels, several signal isolation Measurement channels, MCU control unit and display screen；Host computer is used to that the configuration information needed for load to be measured to be arranged according to test signal and feedback signal type；Parameter input unit is used for input test parameter；Display screen is used to carry out the presentation of information of test main interface；Signal output channels generate corresponding test signal according to the test parameter；The feedback signal of signal isolation Measurement channel collected load to be measured in real time is transmitted to MCU control unit by third adc circuit；MCU control unit acquires the feedback signal that the load to be measured returns according to the test signal of signal output channels output and the signal isolation Measurement channel, exports and show testing result in real time.The utility model has the advantages that design science, highly practical, detection efficiency is high and accuracy of detection is high.
Description
Technical field
The utility model is related to valve class repair apparatus technical fields, specifically, relate to it is a kind of for valve class maintenance
Test system.
Background technology
Dynamic flow balance valve can constant water flow system flow, according to system condition change and change resistance coefficient automatically,
In certain pressure differential range, can efficiently control by flow keep a constant value, i.e., pressure difference before and after valve to increase
When, flow can be kept not increase by the action of valve turned down automatically, conversely, when pressure difference reduces, valve is opened greatly automatically,
Flow makes water system stable operation still according to keeping constant, and ensures station central air-conditioning refrigerating function normal operation, reduces system event
Barrier rate extends equipment life.Electric air valve actuator is suitable for divulging information, the air-valve of air-conditioning system controls.Subway and industrial field
It closes, there are many actuators of type for use, lack simple and effective means fault point when equipment fault needs maintenance.
Usually used repair method is roughly divided into several classes：1, use experience method, method of substitution carry out fault diagnosis.2, make
Fault diagnosis is carried out with signal generator and multimeter.3, using can be sent out with output signal and simultaneously with the signal of measuring signal
Raw device or process checking gauge carry out fault diagnosis.
Use experience method, method of substitution carry out fault diagnosis, the disadvantage is that：Fault handling time is longer, lacks authentic and valid
Data are supported, erroneous judgement is be easy to cause, and a large amount of human and material resources will be caused to waste, normal production task is influenced, cause huge
Loss.
Fault diagnosis is carried out using signal generator and multimeter, and when malfunction elimination needs to export the voltage or electric current of setting
Signal, while the voltage or current signal of feedback are acquired, it needs to generate variable voltage source using signal generator in use site
Or current source, while measuring voltage or electric current with multimeter；The disadvantage is that：Required equipment is more, wiring is more, carries and operates not
Just, and can not the data of synchronous recording output signal and the data of measurement, can not specifically be analyzed.
Using with output signal and simultaneously failure can be carried out with the signal generator of measuring signal or process checking gauge
Diagnosis.The signal generator or process checking gauge of the type in the market are all general measuring instrument instrument, in the market often
Instrument is the mode of signal source module and measurement pattern switching.
And working site usually needs output signal all the way, signal measurement uses simultaneously all the way, and the measurement data recorded
And it is analyzed, the not no instrument and meter of the malfunction elimination specifically for a variety of actuators and test in the market；And signal source
Channel and Measurement channel are the design architectures of total reference ground, cannot measure suspended voltage value, be unable to measuring apparatus output certain two
Voltage difference between point.Due to being general measuring instrument instrument, versatility is stronger, and specificity is poor；Operation and be arranged compared with
Complexity, display interface is not intuitive, to influence the test to a certain equipment and fault diagnosis.
In order to solve the above problems, people are seeking always a kind of ideal technical solution.
Invention content
The purpose of this utility model is in view of the deficiencies of the prior art, to provide a kind of design science, highly practical, inspection
Survey the efficient and high accuracy of detection test system for the maintenance of valve class.
To achieve the goals above, technical solution used by the utility model is：A kind of test for the maintenance of valve class
System, including host computer, parameter input unit, several signal output channels, several signal isolation Measurement channels, MCU control are single
Member and display screen；
The host computer is connected with the MCU control unit, for being waited for according to test signal and the setting of feedback signal type
Survey the configuration information needed for load；
The parameter input unit is connected with the MCU control unit, is used for input test parameter；
The display screen is connected with the MCU control unit, the presentation of information for carrying out test main interface；
The signal output channels include DAC circuit, signal conditioning circuit, drive of constant voltage source circuit, constant-current source driving electricity
Road, constant pressure source actual value back production circuit and constant-current source actual value back production circuit；
The drive of constant voltage source circuit and the constant current source driving circuit pass sequentially through the signal conditioning circuit and institute
It states DAC circuit and is connected to the MCU control unit, according to the test parameter, generate corresponding test signal；
The test signal is transmitted to the load to be measured by output switching circuit；The constant pressure source actual value back production electricity
Road and the constant-current source actual value back production circuit acquire the test signal of reality output and feed back to the MCU controls list in real time
Member；
The signal isolation Measurement channel includes sequentially connected signal input circuit, voltage current switching circuit, gear
Switching circuit, input signal protection circuit and voltage isolation and transmission circuit；The voltage current switching circuit and the gear are cut
Circuit is changed, the MCU control unit is connected by isolated drive circuit；The signal input circuit connects the load to be measured,
The voltage isolation and transmission circuit connects the MCU control unit by third adc circuit, real-time collected load to be measured
Feedback signal is transmitted to the MCU control unit by the third adc circuit；
The MCU control unit is measured according to the test signal of signal output channels output and the signal isolation
Channel acquires the feedback signal that the load to be measured returns in real time, exports and shows testing result.
Based on above-mentioned, the test signal is test voltage signal or test current signals, and the feedback signal is anti-
Feedthrough voltage signal or fed-back current signals.
Based on above-mentioned, the parameter input unit includes the button for input test parameter, for adjusting test signal
The rotary encoder of parameter value, and the key-press status feedback circuit by LED light instruction key-press status.
Based on above-mentioned, which further includes LED light device, for detecting the warm and humid of test environment humiture information
Spend sensor, the SD card for storing the feedback signal, and the serial memory module for storing the configuration information, institute
It states LED light device, the Temperature Humidity Sensor, the SD card and the serial memory module and controls list with the MCU respectively
Member is connected.
Based on above-mentioned, which further includes being connected with the MCU control unit for needing to provide according to test
The external of corresponding test function expands attachment, and the external attachment of expanding includes switching value output module, switching value identification module
And programmable power supply.
Based on above-mentioned, which further includes electric power management circuit, and the electric power management circuit includes sequentially connected
Lithium battery charging circuit, lithium battery voltage detection circuit and a key switch electromechanics road, the output end on the key switch electromechanics road
It is separately connected the lithium battery booster circuit for providing 24V voltages and the DC-DC booster circuit for providing 5V voltages；It is described
5V voltages are converted to 3.3V voltages by DC-DC booster circuit, connection LDO reduction voltage circuits, connect polarity switching by 5V voltages
Be converted to -5V voltages.
Based on above-mentioned, the parameter input unit uses intelligent terminal or PC machine；The intelligent terminal passes through channel radio
News module is connected with the MCU control unit, and the PC machine passes through USB interface or RS485 modes and the MCU control unit
It is connected.
Based on above-mentioned, the signal isolation Measurement channel further includes isolation acquisition power supply circuit and isolation for electrically floating ground electricity
Road.
A kind of test method of the above-mentioned test system for the maintenance of valve class, includes the following steps：
Step 1, load to be measured is respectively set according to different type valve class testing signal and feedback signal in the host computer
Required different configuration information generates test-types according to the configuration information；The configuration information include test signal type,
Feedback signal type, unit, multiplying power and testing process；
Step 2, the MCU control unit is called corresponding configuration information, is waited for described in generation according to selected test-types
Survey the test assignment of load；
Step 3, manual test or automatic test are judged as according to test assignment, if it is manual test, configuration is manual
Test parameter；If it is automatic test, automatic load test signal parameter value；
Step 4, test signal parameter value is loaded out according to test assignment, the MCU control unit is joined according to test signal
Numerical value controls the signal output channels and exports corresponding test signal, controls the signal isolation Measurement channel and acquire in real time
The feedback signal that the load to be measured returns, tests the load to be measured, according to the test signal and the feedback
Signal generates test report.
Based on above-mentioned, the test-types include A class valve tests type, B class valve tests type, C class valve test types or
Person's D class valve test types, the A classes valve test type configuration is test signal and feedback signal is voltage signal, the B classes
Valve test type configuration is test signal and feedback signal is current signal；The C classes valve test type configuration is that test is believed
Number be voltage signal, feedback signal is current signal；It is current signal that the D classes valve test type configuration, which is test signal, instead
Feedback signal is voltage signal.
The utility model has substantive features and progress compared with the prior art, specifically：
1）The utility model provides a kind of test system for the maintenance of valve class, which includes host computer, ginseng
Number input unit, several signal output channels, several signal isolation Measurement channels, MCU control unit and display screen etc.；It will be traditional
Test step is realized by this test system, and corresponding test signal is exported by the signal output channels；Pass through the letter
Number isolation measurement channel real-time synchronization acquires the feedback signal that the load to be measured returns, and substantially increases testing efficiency, saves
Human input cost；
2）The host computer is according to test signal and feedback signal type, setting A class valve tests type, B class valve test classes
Configuration information needed for type, C class valve test types and D class valve test types carries out the data of different type valve class service work
Acquisition；
3）The signal output channels and the signal isolation Measurement channel, can both work independently, can also simultaneously work
Make, and signal output channels and signal isolation Measurement channel are isolation；
In conclusion the utility model has that design science, highly practical, detection efficiency are high and that accuracy of detection is high is excellent
Point.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the signal output channels structure diagram of the utility model.
Fig. 3 is the signal isolation Measurement channel structure diagram of the utility model.
Fig. 4 is the programming system schematic diagram of the utility model.
Fig. 5 is the test job flow diagram of the utility model.
Fig. 6 is the governor circuit schematic diagram of the utility model.
Fig. 7 is the ADS1256 multichannel AD Acquisition Circuit schematic diagrames of the utility model.
Fig. 8 is the signal output channels circuit diagram of the utility model.
Fig. 9 is the signal isolation Measurement channel circuit diagram of the utility model.
Specific implementation mode
Below by specific implementation mode, the technical solution of the utility model is described in further detail.
As shown in attached drawing 1-9, it is a kind of for valve class maintenance test system, if it include host computer, parameter input unit,
Dry signal output channels, several signal isolation Measurement channels, MCU control unit and display screen；The host computer, with the MCU
Control unit is connected, for according to test signal and feedback signal type, the configuration information needed for load to be measured to be respectively set；Institute
Parameter input unit is stated, is connected with the MCU control unit, input test parameter is used for；The display screen is controlled with the MCU
Unit processed be connected, for according to the configuration information and show test main interface carry out test main interface presentation of information；It is described
Signal output channels include that DAC circuit, signal conditioning circuit, drive of constant voltage source circuit, constant current source driving circuit, constant pressure source are true
It is worth back production circuit and constant-current source actual value back production circuit；The drive of constant voltage source circuit and the constant current source driving circuit are successively
It is connected to the MCU control unit by the signal conditioning circuit and the DAC circuit, according to the test parameter, is generated
Corresponding test signal；The test signal is transmitted to the load to be measured by output switching circuit；The constant pressure source is true
Value back production circuit and the constant-current source actual value back production circuit acquire the test signal of reality output and feed back to the MCU in real time
Control unit；The signal isolation Measurement channel includes sequentially connected signal input circuit, voltage current switching circuit, shelves
Position switching circuit, input signal protection circuit and voltage isolation and transmission circuit and adc circuit；The voltage current switching circuit
With the gear switch circuit, the MCU control unit is connected by isolated drive circuit；The signal input circuit connects institute
Load voltage isolation and transmission circuit to be measured is stated, the voltage isolation and transmission circuit connects the MCU by third adc circuit and controls
The feedback signal of unit, real-time collected load to be measured will collect load to be measured in real time by the third adc circuit
Feedback signal transmission is to the MCU control unit；The MCU control unit, the test exported according to the signal output channels
Signal and the signal isolation Measurement channel acquire the feedback signal that the load to be measured returns in real time, export and show detection knot
Fruit.
The test signal is test voltage signal or test current signals, and the feedback signal is feedback voltage signal
Or fed-back current signals.Two paths of signals output channel and two paths of signals isolation measurement channel can be arranged in the utility model, or
Four road signal output channels of person and four tunnel signal isolation Measurement channels, with specific reference to needing to be arranged.
Specifically, the parameter input unit includes the button for input test parameter, for adjusting test signal ginseng
The rotary encoder of numerical value, and the key-press status feedback circuit by LED light instruction key-press status；The button, the rotation
Turn encoder and the key-press status feedback circuit is connected with the MCU control unit respectively.The button include upper key, under
Key, right button, acknowledgement key, power button, restarts key and ESC Escape etc. at left button, realizes new to the selection of test-types and this practicality
Type function setting, the rotary encoder easily can carry out flexible modulation to test parameter, can be manipulated with coarse adjustment, fine tuning
Property it is more preferable, optimize man-machine interaction mode, there is under button LED indication to there is key-press status to feed back LED indication, for feeding back button operation
State, convenient for being used in the environmental operations of insufficient light.
The test system further includes LED light device, the Temperature Humidity Sensor for detecting test environment humiture information,
SD card for storing the feedback signal, and the serial memory module for storing the configuration information, the LED illumination
Device, the Temperature Humidity Sensor, the SD card and the serial memory module are connected with the MCU control unit respectively.Institute
LED light device setting is stated in tester ontology leading flank, by controlling lighting and closing for LED, convenient in insufficient light
Environmental operations use；The Temperature Humidity Sensor, can detect the humiture information of test equipment use environment, and be shown in aobvious
Show on interface；Carry out data record and storage using the SD card, can with record data off line, convenient for the test signal and
The analysis comparison of the real time data and historical data of the feedback signal；The serial memory module deposits configuration information
Storage, stores relevant order and mark.
In order to realize functions expanding, which further includes being connected with the MCU control unit for according to test
The outside for providing corresponding test function is needed to expand attachment, the external attachment of expanding is connected to the MCU by USB interface
Control unit, several external attachmentes of expanding include switching value output module, switching value identification module and programmable power supply.USB
Interface is as an external connection expanded interface, realize to multiple functions expansion attachment；The USB interface also supports OTG
Firmware upgrade.Certain load outputs to be measured have the numerical value on-off model of relay mechanical switch amount signal or optocoupler, and originally
Test system can only realize test voltage signal and test current signals output and feedback voltage signal and feedback current letter
Number isolation measurement；The on-off model of load to be measured can not be acquired simultaneously, therefore, this test system is opened by described
Output module and the switching value identification module are measured in pass, flexibly realize and work the type valve class testing.The external expansion
Attachment, which can be the programmable power supply of 0-36V either 0-3A, to be realized and adjusts manually or carry out parameter configuration by USB interface,
But it is not limited to the voltage range, only indicates this control and design framework.This test system can be connected single by USB interface
A or multiple external expansion attachmentes, to realize the perfect and functions expanding to test function.
The test system further includes electric power management circuit, and the electric power management circuit includes sequentially connected lithium battery charging
Circuit, lithium battery voltage detection circuit and a key switch electromechanics road, the output end on the key switch electromechanics road are separately connected use
In the lithium battery booster circuit and DC-DC booster circuit for providing 5V voltages that provide 24V voltages；The DC-DC boostings
5V voltages are converted to 3.3V voltages by circuit, connection LDO reduction voltage circuits, and 5V voltages are converted to -5V by connection polarity switching
Voltage.The lithium battery charging circuit includes lithium battery power supply module and USB interface, is to this test by the USB interface
System charges, and is powered to load to be measured and power supply parameter monitors, and when load faulty to be measured or abnormal conditions, is to test
When system interferes, the feedback signal of the load to be measured is monitored, the dynamic convenient for carrying out working condition to load to be measured monitors
And analysis, find the abnormal operation of load to be measured in time, carry out safeguard measure, avoid failure cause damages it is further
Expand.
Specifically, the parameter input unit can also use intelligent terminal or PC machine；The intelligent terminal or institute
PC machine is stated by wireless communication module to be connected with the MCU control unit；The intelligent terminal or the PC machine are to the MCU
Control unit sends test parameter, and receives the feedback signal that the MCU control unit returns.The wireless communication module uses
Bluetooth, WIFI or other wireless communication modes, the intelligent terminal are the intelligent terminals such as mobile phone, tablet computer, this test system
System described can be loaded to be measured to carrying out remote control and remote monitoring by intelligent terminal or the PC machine, avoid electricity
Gas connects, and prevents from damaging the person in test environment rugged environment.Intelligent terminal or PC machine are additionally coupled to internet,
By test data by the Internet transmission to other monitor supervision platform equipment, remote control and monitoring are carried out convenient for staff, together
When this test system be also connected with Internet of Things, as in big data data acquisition and monitoring link.
The signal isolation Measurement channel further includes that isolation acquisition power supply circuit and isolation supply electrically floating ground circuit.It is described every
Include B0509S_1WR2 chips, capacitance C43-C46 and resistance R54 from acquisition power supply circuit, the B0509S_1WR2 chips
Pin VCC is connected to+5V power ends by resistance FB2, and pin GND is connected to ground terminal, pin ISO_VCC by resistance FB5
Resistance FB3 is connected as isolation power supply analog power positive output end, pin ISO_GND connection resistance FB6 is as isolation power supply mould
Quasi- power supply negative output terminal.The isolation includes operational amplifier LM321MF, resistance R57-R61, capacitance for electrically floating ground circuit
C51-C55 and Light-emitting diode LED.The isolation acquisition power supply circuit and the isolation are to this test for electrically floating ground circuit
The signal isolation Measurement channel of system charges, using isolation power supply and USB isolation communications.
The signal input circuit transmits signal using shielding line, and shielding line one end uses the aviation plug connection side of metal
Formula, other end setting prevent output signal by external interference for loading the measuring probe being connected with to be measured.The gear switch
Circuit includes photoelectrical coupler AQY212EH, the pin 3 and pin 4 of the photoelectrical coupler AQY212EH respectively with double-pole double throw
The movable contact of relay G6K_2F_Y connects, and switches for realizing mV, V grades；The input signal protection circuit includes accurate transports
Calculate amplifier U11, capacitance C28-C31 and capacitance C33；The voltage isolation and transmission circuit includes linear optocoupler TIL300A
With precision operational-amplifier U12, the pin LEDA of the linear optocoupler TIL300A and the precision operational-amplifier U11
Output end connects, and pin PD1A is connect with the negative input end of the precision operational-amplifier U11, pin PD2A and the accurate fortune
Calculate the positive input terminal connection of amplifier U12.
The MCU control unit is also associated with display screen, and the display screen shows different type valve class testing interface, often
A interface is set according to the operation instruction of equipment, test characteristic, the self-defined unit of display and than multiplying power, real-time display conversion
Unit afterwards and numerical value, convenient for being compared with equipment show value；By switching different test interfaces, realize to some model device
Special test.Can also use host computer to test interface carry out editing customized, increase test mode flexibility and specially
With property, it is more directed to use environment, saves the time easy access and test of the configuration and operation of use site to the greatest extent.
The workflow of this test system is as shown in Fig. 5：（1）Initialization；（2）Described in the MCU control unit load
The configuration information of host computer setting, the configuration information includes test signal type, feedback signal type, unit, multiplying power and survey
Try flow；（3）The MCU control unit calls corresponding configuration information according to selected test-types, generates described to be measured negative
The test assignment of load is judged as manual test or automatic test according to test assignment；（4）If it is manual test, hand is configured
Dynamic test parameter, by the parameter input unit manual setting output parameter, into manual test flow；（5）If it is certainly
Dynamic test, then automatic load test signal parameter value, controls the signal output channels and exports corresponding test signal, control institute
It states signal isolation Measurement channel and acquires the feedback signal that the load to be measured returns in real time, and feedback letter is judged according to configuration information
Number whether in normal range (NR)；The test signal parameter value is pre-configured with by the host computer；（6）If the feedback signal
Not in normal range (NR), then according to configuration information failure judgement type；（7）If the feedback signal is in normal range (NR), then it represents that
The function of load testing to be measured is normal, terminates to test if test assignment is completed, generates test packet.
A kind of test method of the above-mentioned test system for the maintenance of valve class, includes the following steps：
Step 1, load to be measured is respectively set according to different type valve class testing signal and feedback signal in the host computer
Required different configuration information, and it is stored in serial memory module；The configuration information includes test signal type, feedback signal
Type, unit, multiplying power and testing process；
The display screen display generates the test main interface of different test-types according to the configuration information and is carrying out；
The test main interface includes different valve class testing types, and the test-types are corresponded with configuration information；
Step 2, according to the type of the load to be measured, difference is executed in test main interface by the parameter input unit
The selection of valve class testing type acts；The MCU control unit is stored in advance in the string according to selected test-types, calling
The corresponding configuration information of row memory module generates the test assignment of the load to be measured；
Step 3, manual test or automatic test are judged as according to test assignment, if it is manual test, configuration is manual
Test parameter；If it is automatic test, automatic load test signal parameter value, the test signal parameter value is to pre-set
's；
Step 4, test signal parameter value is loaded out according to test assignment, the MCU control unit is joined according to test signal
Numerical value controls the signal output channels and exports corresponding test signal, controls the signal isolation Measurement channel and acquire in real time
The feedback signal that the load to be measured returns, tests the load to be measured, according to the test signal and the feedback
Signal generates test report.
The test-types include that A class valve tests type, B class valve tests type, C class valve test types or D class valves are surveyed
Type is tried, the A classes valve test type configuration is test signal and feedback signal is voltage signal, the B classes valve test class
Type is configured to test signal and feedback signal is current signal；It is voltage that the C classes valve test type configuration, which is test signal,
Signal, feedback signal are current signal；It is current signal that the D classes valve test type configuration, which is test signal, and feedback signal is
Voltage signal.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model rather than limits it
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：It can still modify to specific embodiment of the present utility model or some technical characteristics are equally replaced
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (8)
1. a kind of test system for the maintenance of valve class, it is characterised in that：Including host computer, parameter input unit, several signals
Output channel, several signal isolation Measurement channels, MCU control unit and display screen；
The host computer is connected with the MCU control unit, for be measured negative according to test signal and the setting of feedback signal type
Configuration information needed for carrying；
The parameter input unit is connected with the MCU control unit, is used for input test parameter；
The display screen is connected with the MCU control unit, the presentation of information for carrying out test main interface；
The signal output channels include DAC circuit, signal conditioning circuit, drive of constant voltage source circuit, constant current source driving circuit, perseverance
Potential source actual value back production circuit and constant-current source actual value back production circuit；
The drive of constant voltage source circuit and the constant current source driving circuit pass sequentially through the signal conditioning circuit and the DAC
Circuit is connected to the MCU control unit, according to the test parameter, generates corresponding test signal；
The test signal is transmitted to the load to be measured by output switching circuit；The constant pressure source actual value back production circuit and
The constant-current source actual value back production circuit acquires the test signal of reality output and feeds back to the MCU control unit in real time；
The signal isolation Measurement channel includes sequentially connected signal input circuit, voltage current switching circuit, gear switch
Circuit, input signal protection circuit and voltage isolation and transmission circuit；The voltage current switching circuit and gear switch electricity
Road connects the MCU control unit by isolated drive circuit；The signal input circuit connects the load to be measured, described
Voltage isolation and transmission circuit connects the MCU control unit, the feedback of real-time collected load to be measured by third adc circuit
Signal is transmitted to the MCU control unit by the third adc circuit；
The MCU control unit, according to the test signal of signal output channels output and the signal isolation Measurement channel
The feedback signal that the load to be measured returns is acquired in real time, is exported and is shown testing result.
2. the test system according to claim 1 for the maintenance of valve class, it is characterised in that：The test signal is test
Either the test current signals feedback signal is feedback voltage signal or fed-back current signals to voltage signal.
3. the test system according to claim 2 for the maintenance of valve class, it is characterised in that：The parameter input unit packet
The button for input test parameter is included, the rotary encoder for adjusting test signal parameter value, and indicated by LED light
The key-press status feedback circuit of key-press status.
4. being used for the test system of valve class maintenance according to claim 1-3 any one of them, it is characterised in that：The test system
Further include LED light device, the Temperature Humidity Sensor for detecting test environment humiture information, for storing the feedback letter
Number SD card, and the serial memory module for storing the configuration information, the LED light device, the humiture pass
Sensor, the SD card and the serial memory module are connected with the MCU control unit respectively.
5. the test system according to claim 4 for the maintenance of valve class, it is characterised in that：The test system further include with
What the MCU control unit was connected is used to need to provide according to test the external expansion attachment of corresponding test function, the outside
It includes switching value output module, switching value identification module and programmable power supply to expand attachment.
6. the test system according to claim 4 for the maintenance of valve class, it is characterised in that：The test system further includes electricity
Power management circuits, the electric power management circuit include sequentially connected lithium battery charging circuit, lithium battery voltage detection circuit and
One key switch electromechanics road, the output end on the key switch electromechanics road are separately connected the lithium battery for providing 24V voltages and boost
Circuit and DC-DC booster circuit for providing 5V voltages；The DC-DC booster circuit, connection LDO reduction voltage circuits are electric by 5V
Pressure is converted to 3.3V voltages, and 5V voltages are converted to -5V voltages by connection polarity switching.
7. the test system according to claim 2 for the maintenance of valve class, it is characterised in that：The parameter input unit is adopted
With intelligent terminal or PC machine；The intelligent terminal is connected by wireless communication module with the MCU control unit, the PC machine
It is connected with the MCU control unit by USB interface or RS485 modes.
8. the test system according to claim 6 for the maintenance of valve class, it is characterised in that：The signal isolation measures logical
Road further includes that isolation acquisition power supply circuit and isolation supply electrically floating ground circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820377735.XU CN207924093U (en) | 2018-03-20 | 2018-03-20 | A kind of test system for the maintenance of valve class |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820377735.XU CN207924093U (en) | 2018-03-20 | 2018-03-20 | A kind of test system for the maintenance of valve class |
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| CN207924093U true CN207924093U (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820377735.XU Expired - Fee Related CN207924093U (en) | 2018-03-20 | 2018-03-20 | A kind of test system for the maintenance of valve class |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152734A (en) * | 2018-03-20 | 2018-06-12 | 郑州市轨道交通有限公司运营分公司 | A kind of test system and test method for the maintenance of valve class |
-
2018
- 2018-03-20 CN CN201820377735.XU patent/CN207924093U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152734A (en) * | 2018-03-20 | 2018-06-12 | 郑州市轨道交通有限公司运营分公司 | A kind of test system and test method for the maintenance of valve class |
| CN108152734B (en) * | 2018-03-20 | 2024-02-20 | 郑州市轨道交通有限公司运营分公司 | Testing system and testing method for valve overhaul |
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