CN105629165A - System and method of testing relay and solenoid valve - Google Patents
System and method of testing relay and solenoid valve Download PDFInfo
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- CN105629165A CN105629165A CN201610132953.2A CN201610132953A CN105629165A CN 105629165 A CN105629165 A CN 105629165A CN 201610132953 A CN201610132953 A CN 201610132953A CN 105629165 A CN105629165 A CN 105629165A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a system and a method of testing a relay and a solenoid valve. The system comprises a single chip microcomputer system, a power circuit, a relay and a pneumatic circuit, wherein the pneumatic circuit comprises a solenoid valve, an air pump, an air pressure sensor and an air storage tank; the single chip microcomputer system is connected with the air pump and the relay; the solenoid valve is respectively connected with the air pump, the air storage tank and the air pressure sensor; and the power circuit is respectively connected with the air pump, the single chip microcomputer system and the solenoid valve. The system of the invention can judge the performance and the actuation time of the relay and the solenoid valve according to a switch signal and a pressure signal fed back by the sensor, and can also perform fatigue test on the relay, the solenoid valve or a system combined by the two, and the embedded single chip microcomputer system interacts with an operator via a key, an indicator lamp and a digital tube. The test system is simple and economic in structure, convenient in operation, accurate in test result and high in intelligent degree.
Description
Technical field
The application relates to a kind of rly., magnetic valve test macro and testing method thereof.
Background technology
Rly. is a kind of electric control device; have Controlling System (also known as input loop) and by Controlling System (also known as export loop) between interactive relationship; often it is applied in the pilot circuit of automatization; in fact it be go the one " auto-switch " controlling big current running with small area analysis, plays the effects such as automatic adjustment, safeguard protection, conversion circuit in circuit. Electromagnetic control equipment used by magnetic valve, uses the direction, flow, speed and other the parameter that adjust medium in the controls, it is possible to coordinates different circuit to realize the control of expection, and the precision controlled and handiness can both ensure.
The combined electrical control Method compare of magnetic valve, rly. is common, the normal operation of both performances also influential system, and for some control overflow height, the system that response to be sought quickness, the opening time of magnetic valve, rly. also requires fast as much as possible, so, the quality of detection magnetic valve, relay performance and opening time are the guarantees of system stability.
The Fatigue Test of magnetic valve, rly. or the two combined system, also it is very useful test, by the Fatigue Test to product, it is possible to certainty annuity maintains stable minimum action frequency, for system design, component type selecting, product performance detection provide certain foundation.
Summary of the invention
It is an object of the invention to provide a kind of rly., magnetic valve test macro and testing method thereof, can according to the switch signal of sensor feedback and pressure signal, judge quality and the opening time of rly., magnetic valve performance, can also carrying out the Fatigue Test of rly., magnetic valve or the two combined system, embedded single-chip computer system is mutual by button, pilot lamp and charactron and operator. This test macro mechanism is simple, economical, easy to operate, and test result is accurate, intelligence degree height.
For achieving the above object, the present invention provides following technical scheme:
The embodiment of the present application discloses a kind of rly., magnetic valve test macro, comprise SCM system, power source circuit, rly. and pneumatic circuit, described pneumatic circuit comprises magnetic valve, air pump, gas pressure sensor and gas-holder, described SCM system is connected to described air pump and rly., described magnetic valve is connected to described air pump, gas-holder and gas pressure sensor, described power source circuit is connected to described air pump, SCM system and magnetic valve, described micro-chip transmits control signal and controls air pump and operation of relay, described operation of relay drives magnetic valve break-make, the switch signal of described rly. and the pressure feedback signal of gas pressure sensor feed back to SCM system, when described magnetic valve is failure to actuate, described gas pressure sensor and atmosphere, the pressure feeding back to SCM system is normal atmosphere, during described magnetic valve action, described gas pressure sensor communicates with gas-holder, the pressure feeding back to SCM system is the internal pressure of gas-holder.
Preferably, in above-mentioned rly., magnetic valve test macro, described pneumatic circuit also comprises safety valve, check valve, Y-junction one and Y-junction two, connect successively between described air pump, Y-junction one, check valve, Y-junction two and gas-holder, described safety valve is connected to described Y-junction one, and described magnetic valve is connected to described Y-junction two.
Preferably, in above-mentioned rly., magnetic valve test macro, described SCM system comprises micro-chip, key control circuit, display control circuit, buzzer alarm circuit, isolated drive circuit and sensor interface circuit, described micro-chip is connected with key control circuit, display control circuit, buzzer alarm circuit, power source circuit, rly., sensor interface circuit respectively by control pin and I/O pin, described sensor interface circuit is connected with gas pressure sensor, and described rly. is connected with isolated drive circuit.
Preferably, in above-mentioned rly., magnetic valve test macro, described micro-chip adopts C8051F020; Described key control circuit comprises the P34-P36 mouth that 3 buttons directly access micro-chip and for selecting test pattern and opens/stop control; Described display control circuit comprises photodiode, 14 Digital sum pipe and 23 Digital sum pipes, the P00-P04 port that described photodiode connects micro-chip is used to indicate test pattern, the performance of tested object, fault alarm, and indicating relay opening time, magnetic valve opening time and Fatigue Test complete number of times to P40-P47, P50-P57, P60, P61 port that described 14 Digital sum pipe, 23 Digital sum pipes connect micro-chips respectively; Described buzzer alarm circuit access micro-chip is connected by P21 port; Described micro-chip P20 port is connected with air pump by isolated drive circuit; The P27 port of described micro-chip is connected with rly. by isolated drive circuit; Described relay1 contact and power source circuit, magnetic valve loop in series; Described gas pressure sensor input signal is connected with the AIN0.7 port of micro-chip through sensor interface circuit; Described sensor interface circuit forms two-stage by LM324 and amplifies circuit: differential amplifier circuit and reverse amplification circuit, and amplification circuit output end is again through RC filtering circuit and protective circuit of diode; Described isolated drive circuit comprises TLP521 light-coupled isolation and the isolation circuit of field effect transistor IRF610 formation.
Preferably, in above-mentioned rly., magnetic valve test macro, described key control circuit arranges 3 independent buttons, controls by micro-chip P34-P36, and its function is as follows: button 1: start in order to control power supply, it is achieved switch function; Button 2: select operating mode, selective relay test pattern, magnetic valve test pattern or Fatigue Test pattern; Button 3: in order to the current machine working order that resets, display data resets.
Preferably, in above-mentioned rly., magnetic valve test macro, described power source circuit is by AC-DC, DC-DC power module, for SCM system, rly. and magnetic valve provide 24V, 12V, 5V volts DS respectively, described power source circuit can also by AMS1117-3.3 for SCM system provides 3.3V power supply.
Preferably, in above-mentioned rly., magnetic valve test macro, described rly. is fixed by rly. fixture, the pull bar that described rly. fixture comprises pedestal and is installed on described pedestal, described pull bar is rotatable between first location and the second position, during described first location, described pull bar is parallel to described base-plates surface, and during the described second position, described pull bar is perpendicular to described base-plates surface, and described rly. is fixed between described pull bar and base-plates surface.
Preferably, in above-mentioned rly., magnetic valve test macro, described magnetic valve is fixed by magnetic valve fixture, described magnetic valve fixture comprises a body, this body upper surface is provided with retaining clip body and live splint body, described retaining clip body and live splint body are oppositely arranged, and are provided with elasticity part between described live splint body and described seat body, and described live splint body can move close to or away from described retaining clip body.
Correspondingly, disclosed herein as well is the testing method of a kind of rly., magnetic valve test macro, comprising:
(1), system from program, read every initial parameter, initialize, wait " startups ", operator should first select test event by key control circuit, described test event comprise relay contact analog control system, magnetic valve test and Fatigue Test;
(2), start up system, system enters different testing processs according to the selection of operator:
When selection is relay contact analog control system, and SCM system sends and controls signal to rly., records this time t1 simultaneously, then SCM system wait-receiving mode rly. controlled contact feedback switch signal, if waiting more than 1 second, then judging rly. fault, test terminates, if there is no time-out, the time t2 of record Received signal strength, the time of response of rly. is T0=t2-t1, repeats this test process N time, N is operator's set(ting)value, the action response time as rly. of averaging;
When selection is magnetic valve test, SCM system sends and controls signal to rly., the controlled contact of rly. and power source circuit, the circuit closed of magnetic valve composition, SCM system is wait-receiving mode rly. feedback switch signal first, if waiting more than 1 second, then judge rly. fault, test terminates, if there is no time-out, the time t2 of record Received signal strength, micro-chip 21 continues the pressure signal of wait-receiving mode gas pressure sensor, if waiting more than 1 second, then judge solenoid valve failure, test terminates, if there is no time-out, the time t3 of record Received signal strength, the action response time of magnetic valve is T1=t3-t2, repeat this test process N time, N is operator's set(ting)value, average the action response time as magnetic valve,
When selection is Fatigue Test, the Fatigue Test number of times that system can be arranged according to operator, circulation sends control signal, obtain the action response time of rly. and magnetic valve, if in the process of test, occur that time-out or time of response exceed normal value, then test terminates, and show fault, if arriving setting testing time and not exiting, then rly. and magnetic valve pass through Fatigue Test.
Compared with prior art, it is an advantage of the current invention that: after the present invention starts, control core reads and presses key signals, setting parameters, if relay performance test pattern, then it is qualified to judge whether according to relay1 contact feedback switch signal; If magnetic valve performance test pattern, then it is qualified to judge whether according to gas pressure sensor feedback pressure signal; If Fatigue Test, then repeatedly send relay control signal and drive operation of relay, and then Controlling solenoid valve action. It is simple, economical that this invention has structure, easy to operate, and test result is feature accurately, is applicable to the performance test of rly., magnetic valve, and fatigue test, for system design, component type selecting, Product checking provide foundation.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 show the principle skeleton diagram of specific embodiment of the invention repeat circuit, magnetic valve test macro;
The principle schematic that Fig. 2 show in the specific embodiment of the invention pneumatic circuit;
The principle schematic that Fig. 3 show in the specific embodiment of the invention embedded single-chip computer system;
The structural representation that Fig. 4 show in the specific embodiment of the invention magnetic valve fixture;
Fig. 5 show the structural representation of specific embodiment of the invention repeat circuit fixture;
Fig. 6 show the test flow chart of specific embodiment of the invention repeat circuit, magnetic valve test macro.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is described in detail, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of protection of the invention.
As shown in Figure 1, rly., magnetic valve test macro comprise SCM system, power source circuit, rly. and pneumatic circuit.
Shown in ginseng Fig. 2, pneumatic circuit comprises magnetic valve 8, air pump 2, gas pressure sensor 4, gas-holder 15, safety valve 12, check valve 13, Y-junction 1 and Y-junction 2 14. Air pump 3, safety valve 12 are connected by Y-junction 11 with check valve 13, and check valve 13, magnetic valve 8, gas-holder 15 are connected by Y-junction 12, and another side of magnetic valve 8 is connected with gas pressure sensor 4.
Magnetic valve 8 can be two-bit triplet, two four-ways, two five-way electromagnetic valves, and this enforcement is described for two-bit triplet magnetic valve.
Safety valve 12, carries out pressure release for when air pump 3 delivery conduit surpressure, prevents hypertonia from system is caused damage. Surpressure may occur in situations such as line clogging, air pump 3 fault, check valve 13 faults.
Check valve 13, for the unidirectional output gas of air pump 3, prevents gas backflow from entering air pump 3, avoids gas leakage, and damage air pump 3.
Embedded single-chip computer system 1 is connected with power source circuit, air pump 3, pressure transmitter 4, rly. fixture 5 respectively. Embedded single-chip computer system transmits control signal and controls air pump 3 and rly. 7 action, rly. 7 action drives magnetic valve 8 break-make, and the pressure feedback signal of the switch signal of rly. 7 and gas pressure sensor 4 feeds back to embedded single-chip computer system, by corresponding display control circuit (Fig. 3) indicating relay 7 and magnetic valve 8 performance, embedded single-chip computer system also by repeating to drive rly. 7 according to Fixed Time Interval, reaches rly. 7 and the object of magnetic valve 8 Fatigue Test.
Magnetic valve 8, a side-inlet connects gas pressure sensor 4, and another side often outputs that mouth is connected with air, normally closed outlet is connected with gas-holder 15 by Y-junction 14. When embedded single-chip computer system does not send actuate signal, rly. 7 not conducting, magnetic valve 8 is failure to actuate, then gas pressure sensor 4 and atmosphere, the pressure feeding back to embedded single-chip computer system is normal atmosphere, when embedded single-chip computer system sends actuate signal, rly. 7 conducting, magnetic valve 8 action, then gas pressure sensor 4 communicates with gas-holder 15, and the pressure feeding back to embedded single-chip computer system is the internal pressure of gas-holder 15.
Power source circuit 2, power source circuit 2 is by AC-DC, DC-DC power module, it may be possible to provide 24V, 12V, 5V volts DS is embedded single-chip computer system 1, rly. 7, magnetic valve 8 provide power supply, then by AMS1117-3.3 for circuit provides 3.3V power supply.
Shown in ginseng Fig. 3, embedded single-chip computer system comprises micro-chip, key control circuit, display control circuit, buzzer alarm circuit, isolated drive circuit, sensor interface circuit; Micro-chip circuit is connected with key control circuit, display control circuit, buzzer alarm circuit, power source circuit, rly., sensor interface circuit respectively by control pin and I/O pin, and sensor interface circuit is connected with gas pressure sensor; Rly. is connected with power source circuit, magnetic valve, isolated drive circuit respectively.
Micro-chip 21 adopts C8051F020; Key control circuit has the P34-P36 mouth that 3 buttons directly access micro-chip and for selecting test pattern and opens/stop control; Display control circuit comprises the P00-P04 port that photodiode connects micro-chip 21 and is used to indicate test pattern, the performance of tested object, fault alarm, and indicating relay opening time, magnetic valve opening time and Fatigue Test complete number of times to P40-P47, P50-P57, P60, P61 port that 14 Digital sum pipe, 23 Digital sum pipes connect micro-chips respectively; Buzzer alarm circuit access micro-chip is connected by P21 port; Micro-chip P20 port is connected with air pump by isolated drive circuit; The P27 port of micro-chip is connected with rly. by isolation circuit; Relay1 contact and power source circuit, magnetic valve loop in series; Pressure transmitter input signal is connected with the AIN0.7 port of micro-chip through sensor interface; Sensor interface forms two-stage by LM324 and amplifies circuit, first step differential amplifier circuit, second stage reverse amplification circuit, and amplification circuit output end is again through RC filtering circuit and protective circuit of diode; The isolation circuit that isolated drive circuit is formed primarily of TLP521 light-coupled isolation and field effect transistor IRF610.
Micro-chip adopts microprocessor micro-chip C8051F020 chip, and its basic circuit also comprises the crystal resonator of 10MHz. By control pin, I/O mouth pin, read and control each subcircuit.
Power source circuit utilize AC-DC module first by AC220V voltage transitions for 12V volts DS be air pump, rly., solenoid valve, recycling DC-DC module be 5V voltage by 12V voltage transitions is that pressure transmitter 4 is powered, utilize 1117-3.3 by 5V voltage transitions for 3.3V voltage for micro-chip is powered.
Key control circuit arranges 3 independent buttons, controls by micro-chip P34-P36, and its function is as follows: button 1: start in order to control power supply, it is achieved switch function. Button 2: select operating mode, selective relay test pattern, magnetic valve test pattern or Fatigue Test pattern. Button 3: in order to the current machine working order that resets, display data resets.
Display control circuit comprises five photodiodes, and two green display rly.s, magnetic valve test result are qualified, and two yellow display rly.s, magnetic valve test result are defective, and its alarm condition of red display, is controlled by micro-chip P00-P04. Each photodiode positive pole connects the resistance of 200 ��, then receives+VDD, and negative pole connects the drain electrode of MOS pipe BS170, the source ground of MOS pipe BS170, and grid connects micro-chip, receives control signal; It is effective effective in show relay1 actuation time and magnetic valve 8 opening time respectively to show Fatigue Test number of times, 237 segment numerals that display control circuit also comprises 147 segment numeral, time unit is millisecond, the P40-P47IO port of 3 digital pipeline section code shared microcontrollers, bit code is respectively P50-P53, P54-P56, P57-P61 port of micro-chip.
Pressure signal Acquisition Circuit; comprise pressure amplification, filtering and overvoltage protection part; first the one-level differential amplifier circuit being made up of through two four-operational amplifier U4B and U4C pressure transmitter collection pressure sample carries out signal amplification; and then the filtering circuit that contact resistance R25 and electric capacity C23 forms after the second amplifying circuit that a four-operational amplifier U4D forms; the overvoltage protection circuit simultaneously formed through two diode IN4148 (D3, D4); pressure signal is sent to Chip Microcomputer A IN07 interface, thus collects gaseous tension signal.
Air pump connects micro-chip P2.0 interface, first send signal from micro-chip inside and form Q9 and optocoupler TLP521-1 through field effect transistor BS170, the Q17-PWR conducting that indirect controlling field effect IRF610 forms, thus control the start and stop of air pump, wherein air pump positive and negative electrode is first through the filtering circuit of electric capacity C47 and electricity group R58-PWR composition, and then a diode 1N4148 in parallel prevents electric current to be oppositely connected with 12V direct supply again; Adopt Capacitance parallel connection to make its total capacitance quantitative change big simultaneously, reduce the impedance to high-frequency signal, thus protect direct current air pump and improve control accuracy.
Buzzer alarm circuit is connected with micro-chip P2.1 mouth, optocoupler TLP521-1 is adopted to prevent interference thus effectively control hummer, control signal is by the conducting of control field effect transistor BS170, realize optocoupler 1.2 mouthfuls of conductings, then the conducting of field effect transistor IRF610 is controlled, thus power+12 to hummer, send warning.
Control circuit, optocoupler TLP521-4 is adopted to prevent signal disturbing, connect the existing unlatching to magnetic valve of optocoupler 2,4,6,8 cause for gossip by four field effect transistor BS170 to connect, the grid g of field effect transistor connects micro-chip P2.4��P2.7 interface, it is specially optocoupler 10,12,14,16 and connects power supply+12V, and optocoupler 9,11,13,15 mouthfuls connects four magnetic valves respectively, when controlling the existing signal conduction of optocoupler 2,4,6,8 cause for gossip respectively, then corresponding magnetic valve is energized, it is achieved the opening and closing of its starting-up later time.
As shown in Figure 4, magnetic valve is fixed by magnetic valve fixture, and magnetic valve fixture is made up of clamp base 31, fixture case 32, live splint body 33, flexible springs 34 and retaining clip body 20. Clamp base 31 is fixed on test board, and fixture case 32 is fixed in clamp base 31, and flexible springs 34 is placed between fixture case 32 and live splint body 33, and retaining clip body 20 is also fixed in clamp base 31. When magnetic valve placed by needs, only need to pull out live splint body 33, distance between live splint body 33 and retaining clip body 20 just becomes big, so that magnetic valve can be put down, then pine falls live splint body 33, flexible springs 34 will return to original pre-stressed position, so that can clamp magnetic valve so that it is does not loosen.
As shown in Figure 5, rly. is fixed by rly. fixture, and fixture is made up of clamp base 35, fixture 36, pull bar 37. Clamp base 35 is fixed on test board, and fixture 36 is fixed in clamp base 35. Pull bar 37 on fixture 36 has two movable shelves positions (horizontal and vertical), when rly. placed by needs, only pull bar 37 need to be drawn to vertical shelves position, then rly. is placed in fixture 36, pull bar 37 is drawn to level shelves position again, just can clamp rly. so that it is do not loosen.
As shown in Figure 6, programflow chart, system reads every initial parameter from program, initialize, waits " startup ", operator should first select test event by key control circuit, then start up system, system enters different testing processs according to the selection of operator. when selection is relay contact analog control system, and micro-chip sends and controls signal to rly., records this time t1 simultaneously, then micro-chip wait-receiving mode rly. controlled contact feedback switch signal, if waiting more than 1 second, then judging rly. fault, test terminates, if there is no time-out, the time t2 of record Received signal strength, the time of response of rly. is T0=t2-t1, repeats this test process N time, N is operator's set(ting)value, the action response time as rly. of averaging, when selection is magnetic valve test, micro-chip sends and controls signal to rly., the controlled contact of rly. and power source circuit, the circuit closed of magnetic valve composition, micro-chip is wait-receiving mode rly. feedback switch signal first, if waiting more than 1 second, then judge rly. fault, test terminates, if there is no time-out, the time t2 of record Received signal strength, micro-chip continues the pressure signal of wait-receiving mode gas pressure sensor, if waiting more than 1 second, then judge solenoid valve failure, test terminates, if there is no time-out, the time t3 of record Received signal strength, the action response time of magnetic valve is T1=t3-t2, repeat this test process N time, N is operator's set(ting)value, average the action response time as magnetic valve, when selection is Fatigue Test, the Fatigue Test number of times that system can be arranged according to operator, circulation sends control signal, obtain the action response time of rly. and magnetic valve, if in the process of test, occur that time-out or time of response exceed normal value, then test terminates, and show fault, if arriving setting testing time and not exiting, then rly. and magnetic valve pass through Fatigue Test.
It should be noted that, herein, the such as relational terms of first and second grades and so on is only used for separating an entity or operation with another entity or operational zone, and not necessarily requires or imply to there is any this kind of actual relation or sequentially between these entities or operation. And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, so that comprise the process of a series of key element, method, article or equipment not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise the key element intrinsic for this kind of process, method, article or equipment. When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The above is only the embodiment of the application; it is noted that for those skilled in the art, under the prerequisite not departing from the application's principle; can also making some improvements and modifications, these improvements and modifications also should be considered as the protection domain of the application.
Claims (9)
1. a rly., magnetic valve test macro, it is characterized in that, comprise SCM system, power source circuit, rly. and pneumatic circuit, described pneumatic circuit comprises magnetic valve, air pump, gas pressure sensor and gas-holder, described SCM system is connected to described air pump and rly., described magnetic valve is connected to described air pump, gas-holder and gas pressure sensor, described power source circuit is connected to described air pump, SCM system and magnetic valve, described micro-chip transmits control signal and controls air pump and operation of relay, described operation of relay drives magnetic valve break-make, the switch signal of described rly. and the pressure feedback signal of gas pressure sensor feed back to SCM system, when described magnetic valve is failure to actuate, described gas pressure sensor and atmosphere, the pressure feeding back to SCM system is normal atmosphere, during described magnetic valve action, described gas pressure sensor communicates with gas-holder, the pressure feeding back to SCM system is the internal pressure of gas-holder.
2. rly. according to claim 1, magnetic valve test macro, it is characterized in that: described pneumatic circuit also comprises safety valve, check valve, Y-junction one and Y-junction two, connect successively between described air pump, Y-junction one, check valve, Y-junction two and gas-holder, described safety valve is connected to described Y-junction one, and described magnetic valve is connected to described Y-junction two.
3. rly. according to claim 1, magnetic valve test macro, it is characterized in that: described SCM system comprises micro-chip, key control circuit, display control circuit, buzzer alarm circuit, isolated drive circuit and sensor interface circuit, described micro-chip is connected with key control circuit, display control circuit, buzzer alarm circuit, power source circuit, rly., sensor interface circuit respectively by control pin and I/O pin, described sensor interface circuit is connected with gas pressure sensor, and described rly. is connected with isolated drive circuit.
4. rly. according to claim 3, magnetic valve test macro, it is characterised in that: described micro-chip adopts C8051F020; Described key control circuit comprises the P34-P36 mouth that 3 buttons directly access micro-chip and for selecting test pattern and opens/stop control; Described display control circuit comprises photodiode, 14 Digital sum pipe and 23 Digital sum pipes, the P00-P04 port that described photodiode connects micro-chip is used to indicate test pattern, the performance of tested object, fault alarm, and indicating relay opening time, magnetic valve opening time and Fatigue Test complete number of times to P40-P47, P50-P57, P60, P61 port that described 14 Digital sum pipe, 23 Digital sum pipes connect micro-chips respectively; Described buzzer alarm circuit access micro-chip is connected by P21 port; Described micro-chip P20 port is connected with air pump by isolated drive circuit; The P27 port of described micro-chip is connected with rly. by isolated drive circuit; Described relay1 contact and power source circuit, magnetic valve loop in series; Described gas pressure sensor input signal is connected with the AIN0.7 port of micro-chip through sensor interface circuit; Described sensor interface circuit forms two-stage by LM324 and amplifies circuit: differential amplifier circuit and reverse amplification circuit, and amplification circuit output end is again through RC filtering circuit and protective circuit of diode; Described isolated drive circuit comprises TLP521 light-coupled isolation and the isolation circuit of field effect transistor IRF610 formation.
5. rly. according to claim 4, magnetic valve test macro, it is characterised in that: described key control circuit arranges 3 independent buttons, controls by micro-chip P34-P36, and its function is as follows: button 1: in order to control power supply start, it is achieved switch function; Button 2: select operating mode, selective relay test pattern, magnetic valve test pattern or Fatigue Test pattern; Button 3: in order to the current machine working order that resets, display data resets.
6. rly. according to claim 1, magnetic valve test macro, it is characterized in that: described power source circuit is by AC-DC, DC-DC power module, for SCM system, rly. and magnetic valve provide 24V, 12V, 5V volts DS respectively, described power source circuit can also by AMS1117-3.3 for SCM system provides 3.3V power supply.
7. rly. according to claim 1, magnetic valve test macro, it is characterized in that: described rly. is fixed by rly. fixture, the pull bar that described rly. fixture comprises pedestal and is installed on described pedestal, described pull bar is rotatable between first location and the second position, during described first location, described pull bar is parallel to described base-plates surface, during the described second position, described pull bar is perpendicular to described base-plates surface, and described rly. is fixed between described pull bar and base-plates surface.
8. rly. according to claim 1, magnetic valve test macro, it is characterized in that: described magnetic valve is fixed by magnetic valve fixture, described magnetic valve fixture comprises a body, this body upper surface is provided with retaining clip body and live splint body, described retaining clip body and live splint body are oppositely arranged, being provided with elasticity part between described live splint body and described seat body, described live splint body can move close to or away from described retaining clip body.
9. the testing method of the arbitrary described rly. of claim 1 to 8, magnetic valve test macro, it is characterised in that, comprising:
(1), system from program, read every initial parameter, initialize, wait " startups ", operator should first select test event by key control circuit, described test event comprise relay contact analog control system, magnetic valve test and Fatigue Test;
(2), start up system, system enters different testing processs according to the selection of operator:
When selection is relay contact analog control system, and SCM system sends and controls signal to rly., records this time t1 simultaneously, then SCM system wait-receiving mode rly. controlled contact feedback switch signal, if waiting more than 1 second, then judging rly. fault, test terminates, if there is no time-out, the time t2 of record Received signal strength, the time of response of rly. is T0=t2-t1, repeats this test process N time, N is operator's set(ting)value, the action response time as rly. of averaging;
When selection is magnetic valve test, SCM system sends and controls signal to rly., the controlled contact of rly. and power source circuit, the circuit closed of magnetic valve composition, SCM system is wait-receiving mode rly. feedback switch signal first, if waiting more than 1 second, then judge rly. fault, test terminates, if there is no time-out, the time t2 of record Received signal strength, micro-chip 21 continues the pressure signal of wait-receiving mode gas pressure sensor, if waiting more than 1 second, then judge solenoid valve failure, test terminates, if there is no time-out, the time t3 of record Received signal strength, the action response time of magnetic valve is T1=t3-t2, repeat this test process N time, N is operator's set(ting)value, average the action response time as magnetic valve,
When selection is Fatigue Test, the Fatigue Test number of times that system can be arranged according to operator, circulation sends control signal, obtain the action response time of rly. and magnetic valve, if in the process of test, occur that time-out or time of response exceed normal value, then test terminates, and show fault, if arriving setting testing time and not exiting, then rly. and magnetic valve pass through Fatigue Test.
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| CN107091984A (en) * | 2017-07-04 | 2017-08-25 | 合肥工业大学 | The solenoid valve failure monitoring device and monitoring method of a kind of color selector |
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| CN107860572A (en) * | 2017-11-28 | 2018-03-30 | 安徽宏实光机电高科有限公司 | The consistency detection device and detection method of a kind of high frequency valve |
| CN108445319A (en) * | 2018-03-15 | 2018-08-24 | 攀钢集团西昌钢钒有限公司 | A kind of fault detect tool for solenoid valve |
| CN109342936A (en) * | 2018-11-15 | 2019-02-15 | 中石化第十建设有限公司 | Two formula switch valve comprehensive calibrators of one kind and method of calibration |
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| CN111103823A (en) * | 2019-10-21 | 2020-05-05 | 阳江核电有限公司 | Nuclear power station pneumatic diaphragm valve diaphragm experimental device |
| CN111811810A (en) * | 2020-07-17 | 2020-10-23 | 中车青岛四方车辆研究所有限公司 | Performance test equipment of vehicle valve |
| CN112067989A (en) * | 2020-09-29 | 2020-12-11 | 国网北京市电力公司 | High-speed train electromagnetic contactor test system |
| CN113465641A (en) * | 2021-06-15 | 2021-10-01 | 五邑大学 | Low-pressure pneumatic delay and duration parameter detection device and method |
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| CN106197977B (en) * | 2016-07-06 | 2018-07-13 | 公安部天津消防研究所 | Gas extinguishing system high pressure, large-flow check valve action test device and method |
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| CN107632256A (en) * | 2017-08-21 | 2018-01-26 | 上海斐讯数据通信技术有限公司 | A kind of relay stability test method, apparatus and system |
| CN107860572A (en) * | 2017-11-28 | 2018-03-30 | 安徽宏实光机电高科有限公司 | The consistency detection device and detection method of a kind of high frequency valve |
| CN108445319A (en) * | 2018-03-15 | 2018-08-24 | 攀钢集团西昌钢钒有限公司 | A kind of fault detect tool for solenoid valve |
| CN109342936A (en) * | 2018-11-15 | 2019-02-15 | 中石化第十建设有限公司 | Two formula switch valve comprehensive calibrators of one kind and method of calibration |
| CN109520699B (en) * | 2018-12-20 | 2024-05-03 | 中国航天空气动力技术研究院 | Shock tunnel jet response speed and total pressure testing system and testing method |
| CN109520699A (en) * | 2018-12-20 | 2019-03-26 | 中国航天空气动力技术研究院 | A kind of shock tunnel jet flow response speed and stagnation pressure test macro and test method |
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| CN109752181B (en) * | 2018-12-29 | 2020-08-11 | 浙江亚力大科技有限公司 | Electromagnetic valve performance test system |
| CN111103823A (en) * | 2019-10-21 | 2020-05-05 | 阳江核电有限公司 | Nuclear power station pneumatic diaphragm valve diaphragm experimental device |
| CN111811810A (en) * | 2020-07-17 | 2020-10-23 | 中车青岛四方车辆研究所有限公司 | Performance test equipment of vehicle valve |
| CN112067989A (en) * | 2020-09-29 | 2020-12-11 | 国网北京市电力公司 | High-speed train electromagnetic contactor test system |
| CN113465641A (en) * | 2021-06-15 | 2021-10-01 | 五邑大学 | Low-pressure pneumatic delay and duration parameter detection device and method |
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