CN105466968A - Novel glow wire testing device - Google Patents
Novel glow wire testing device Download PDFInfo
- Publication number
- CN105466968A CN105466968A CN201610035669.3A CN201610035669A CN105466968A CN 105466968 A CN105466968 A CN 105466968A CN 201610035669 A CN201610035669 A CN 201610035669A CN 105466968 A CN105466968 A CN 105466968A
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- circuit
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- glow wire
- flame
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
Abstract
The invention provides a novel glow wire testing device which is a fully-automatic intelligentized testing device. The testing device can boost the pressure automatically, conduct heating automatically, control the temperature automatically, conduct measurement automatically, identify whether flame exists or not automatically and measure the flame height and burning time automatically, and a trolley of the testing device can operate and return to the original position automatically. According to the testing device, a tester sets the testing temperature and the testing time through an upper computer or a touch screen according to the requirements before the test is started; after receiving a starting command, the testing device conducts heating according to the set temperature, after the temperature is reached and stabilized for a specified period of time, the trolley carrying a test sample is driven to automatically move to the top of a glow wire for testing, the temperature value of the glow wire and the value of a flowing current are recorded, and whether the tested sample is burnt or not in the testing process, the burning time and the flame height are automatically identified through a flame identification circuit; after the test is ended, according to the command of the upper computer, recorded test data is uploaded to the upper computer for unified management; finally, a smoke evacuation system is started, and smoke is emitted.
Description
Technical field
The present invention relates to a kind of novel glow wire test's device, is need and the test unit of development for the heat-resisting and flame retardant test of high temperature on intelligent electric energy meter watchcase and terminal impact.
Background technology
Along with the gradual perfection of national standard and the universal of intelligent electric energy meter, the security requirement of user to intelligent electric meter is more and more higher, also progressively promotes the quality requirements of ammeter material.In order to the watchcase and terminal that make intelligent electric meter are heat-resisting and anti-flammability reaches standard, glow wire test's device serves critical effect.
Original test unit is that manual rotation pressure regulator knob heats up, and after temperature reaches target temperature and stablizes a period of time, counterweight need be placed in Weight box and heat to drive the clamp truck being loaded with measured object to slide into glowing filament tip by laboratory technician.In process of the test, laboratory technician carries out manipulating and record before need standing in equipment all the time, and equipment cabinet is open, and the dense smoke produced during test product heating and high temperature easily damage the healthy of testing crew.Moreover, whole process of the test all needs laboratory technician to operate, and labour intensity is large, and operating process is complicated, and personal error is comparatively large, and consistance and accuracy are difficult to ensure.
In order to overcome above problem, we have developed novel glow wire test's device, and all processs of the test all strictly observe national standard design by embedded scm.Only test temperature, test period need be inputted before test, start and start the automatic heating that experimental order just can complete test unit, temperature automatically controlled, automatic operation, from dynamic test, automatically record, automatically identify, the total Test process such as measurement automatically, all the time stand in equipment advance line operate and record without the need to laboratory technician, achieve the full-automatic of operating process.After off-test, data are sent to host computer carry out intelligent management by network, RS485 communication, generate and printed report, query history record, carries out intellectual analysis, and test unit is Seal Design, there is special smoke evacuation system, can not work the mischief to environment and personnel.
In a word, not only operating process is simple, safety, reliable, consistance is good, labour intensity and personal error reduce greatly in the present invention; And there is the incomparable robotization of existing equipment, intellectuality and networked function, for future, the construction of intelligent test platform will lay the first stone.
Summary of the invention
The invention provides a kind of novel glow wire test's device, it comprises automatic voltage regulator, current lifting device, glowing filament, high-definition camera, flame identification circuit, current transformer, current measurement circuit, thermopair, temperature measurement circuit, governor circuit, memory circuit, clock circuit, host computer, upper machine communication circuit, touch-screen, RS232 communicating circuit, illuminating lamp, lighting circuit, dolly, intelligent driving circuit, smoke evacuation circuit, fan.
Described automatic voltage regulator control end is connected with governor circuit; Described automatic voltage regulator output terminal is connected with current lifting device input end; The output terminal of described current lifting device is connected with glowing filament; Described current measurement circuit input end is connected with glowing filament via current transformer; The output terminal of described current measurement circuit is connected with governor circuit; Described temperature measurement circuit signal input part is connected with the closely connected thermocouple signal in glowing filament; Described temperature measurement circuit digital output end is connected with governor circuit; Described flame identification circuit input end is connected with high-definition camera, and output terminal is connected with governor circuit; Described memory circuit is connected with governor circuit; Described clock circuit is connected with governor circuit; Described upper machine communication circuit on one side is connected with governor circuit, and the other end is connected with host computer; Described RS232 communicating circuit one end is connected with governor circuit, and the other end is connected with touch-screen; Described intelligent driving circuit control end is connected with governor circuit, and output terminal is connected with dolly; Described smoke evacuation control circui end is connected with governor circuit, exports and is connected with fan; Described lighting circuit control end is connected with governor circuit, and output terminal is connected with illuminating lamp
Described automatic voltage regulator replaces original manual voltage regulator, and original pressure regulator carrys out regulation output voltage by rotating knob, and automatic voltage regulator is the automatic adjustment realizing output voltage by controlling silicon controlled conduction angle; Described current lifting device is that the voltage scale be responsible for pressure regulator exports is converted to electric current, and changes with the change of voltage; Described glowing filament makes ring resistance silk with the nickel filament of nominal diameter, is heated to the test temperature specified with big current; Described flame identification circuit is by picture during high-definition camera shooting glowing filament calcination test product, by image processing techniques, picture is decomposed, samples, analyzed, thus realize the identification of flame and the calculating of the measurement of flame height and burning time; Described thermopair is the temperature being responsible for measuring glowing filament, and temperature signal is converted to thermopower signal; Described temperature measurement circuit is closely attached to by thermopair real time temperature glowing filament being measured glowing filament; Described current transformer is responsible for the big current value flowing through glowing filament to be converted to the current value being convenient to measure; Described current measurement circuit is that Current Transformer reduces the big current flowing through glowing filament, and the sampling resistor of series connection high precision, high stability, by the measurement of effective value measurement circuit realiration to glowing filament electric current; Described governor circuit is the size controlling to flow through glowing filament electric current by controlling automatic voltage regulator output voltage, thus the automatic control realized glow wire temperature, when reaching test temperature also after a period of stabilisation, manipulation dolly drives towards glowing filament, and with the pressure of regulation, in official hour, carry out calcination to test specimen, after having tested, the dolly carrying test specimen automatically returns to original position; Described memory circuit stores the data needing to preserve; Described clock circuit is responsible for providing current time; Described host computer refers to the main control computer be made up of computing machine, communication module and management software, can directly send manipulation order by software; Described upper machine communication circuit sends host computer by RS485 interface circuit or ethernet interface circuit to needing the test figure uploaded, and need the Parameter transfer of manipulation order and the setting assigned host computer to test unit; Described touch-screen is responsible for carrying out optimum configurations, order assign and test figure and test findings display; Described RS232 communicating circuit is responsible for and the information interaction of touch screen, assigns, the display of test figure and test findings to complete in the optimum configurations of touch screen, order; Described lighting circuit is illumination for device inside so that maintenance and check inner case; Described illuminating lamp is responsible for providing cabinet intraoral illumination; Described dolly is the telecontrol equipment of loading test sample, and its operation is completed by intelligent driving circuit control step motor; Described intelligent driving circuit is responsible for controlling dolly to run by regulation; Described fan is that smog and hot air discharge are gone out; Described smoke evacuation circuit is the start-stop being responsible for controlling fan, thus the hot gas after test and smog are emitted through passing through fan, to test next time.
Function of the present invention is realized by software program, and software program comprises primary control program, host computer signal procedure, touch-control display routine, motion control program, temperature control program, thermometric program, current measurement program, voltage-regulation program, flame identification program and defence program.
Described primary control program is responsible for monitoring and calls each function program, completes all processes of glow wire test; Described host computer signal procedure is parameter and the order of being responsible for receiving host computer, and the various test figures obtained are uploaded to host computer; Described touch-control display routine is order and the parameter of being responsible for receiving touch display screen, and the test figure measured, test findings are shown; Described motion control program is the movement of responsible dolly, start-stop, location; Described temperature control program regulates by PID the change controlling glow wire temperature; Described thermometric program is responsible for reading the digital signal of temperature measurement circuit, by calculating the Current Temperatures knowing glowing filament; Described current measurement program is the measurement having come glowing filament electric current by the collection of current signal; Described voltage-regulation program is the voltage being responsible for regulating silicon controlled conduction angle to export to control automatic voltage regulator; Described flame identification program is that the image by taking high-definition camera carries out image procossing, is identified flame by the algorithm extracting flame contours, is measured flame height and burning time, to judge that whether test specimen is qualified; Described defence program is under the state of the limit, to the protection of its one, by limiting the maximum step number of stepper motor, the maximal value of electric current and the maximal value of temperature, risk is reduced.
The present invention can come test temperature to test unit and the isoparametric setting of test period by host computer remote control or local touch-screen; After test unit receives on-test order, temperature according to arranging heats, after temperature arrives and stabilizes official hour, drive the dolly carrying test specimen to be automatically moved to glowing filament top to test, the current temperature value of glowing filament and current value is recorded in process of the test, and automatically record experimental phenomena by the high-definition camera of flame identification circuit, and automatically identify whether flame exists by algorithm, the time of flame combustion and the height etc. of flame; After off-test, according to the order of host computer, recorded test figure is uploaded to host computer and carries out unified management.Finally start smoke evacuation system, smog emission is gone out.
The present invention accomplishes conveniently to assign instruction, transmission data accurately and timely, precise and stable control operation process, carefully reports test findings perfectly, forms the test system of complete set intelligence.Realization is to the watchcase of intelligent electric meter and terminal is heat-resisting and flame retardant test reaches standard and the safety management to user power utilization.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of novel glow wire test's device.
Embodiment
Embodiment one, with reference to accompanying drawing 1, the novel glow wire test's device of one of this embodiment, it comprises automatic voltage regulator, current lifting device, glowing filament, high-definition camera, flame identification circuit, current transformer, current measurement circuit, thermopair, temperature measurement circuit, governor circuit, memory circuit, clock circuit, host computer, upper machine communication circuit, touch-screen, RS232 communicating circuit, illuminating lamp, lighting circuit, dolly, intelligent driving circuit, smoke evacuation circuit, fan.
Described automatic voltage regulator control end is connected with governor circuit; Described automatic voltage regulator output terminal is connected with current lifting device input end; The output terminal of described current lifting device is connected with glowing filament; Described current measurement circuit input end is connected with glowing filament via current transformer; The output terminal of described current measurement circuit is connected with governor circuit; Described temperature measurement circuit signal input part is connected with the closely connected thermocouple signal in glowing filament; Described temperature measurement circuit digital output end is connected with governor circuit; Described flame identification circuit input end is connected with high-definition camera, and output terminal is connected with governor circuit; Described memory circuit is connected with governor circuit; Described clock circuit is connected with governor circuit; Described upper machine communication circuit on one side is connected with governor circuit, and the other end is connected with host computer; Described RS232 communicating circuit one end is connected with governor circuit, and the other end is connected with touch-screen; Described intelligent driving circuit control end is connected with governor circuit, and output terminal is connected with dolly; Described smoke evacuation control circui end is connected with governor circuit, exports and is connected with fan; Described lighting circuit control end is connected with governor circuit, and output terminal is connected with illuminating lamp.
Various hardware circuit function is as follows:
Automatic voltage regulator: by controlling the automatic adjustment of silicon controlled conduction angle realization to output voltage;
Current lifting device: the voltage scale that automatic voltage regulator exports is converted to electric current, and changes with the change of voltage;
Glowing filament: make ring resistance silk with the nickel filament of nominal diameter, is heated to the test temperature specified with big current;
Flame identification circuit: by picture during high-definition camera shooting glowing filament calcination sample, by image processing techniques, picture is decomposed, samples, analyzed, thus realize the identification of flame and the calculating of the measurement of flame height and burning time;
Thermopair: be responsible for the temperature measuring glowing filament, temperature signal is converted to thermopower signal;
Temperature measurement circuit: be closely attached to real time temperature glowing filament being measured glowing filament by thermopair;
Current transformer: the big current value flowing through glowing filament is converted to the current value being convenient to measure;
Current measurement circuit: Current Transformer reduces the big current flowing through glowing filament, the sampling resistor of series connection high precision, high stability, by the measurement of effective value measurement circuit realiration to glowing filament electric current;
Governor circuit: the size controlling glowing filament electric current by controlling automatic voltage regulator output voltage, thus the automatic control realized glow wire temperature, when reaching test temperature also after a period of stabilisation, manipulation dolly drives towards glowing filament, and with the pressure of regulation, in official hour, carry out calcination to test specimen, after having tested, the dolly carrying test specimen automatically returns to original position.
Memory circuit: store the data needing to preserve;
Clock circuit: current time is provided;
Host computer: refer to the main control computer be made up of computing machine, communication module and management software, can directly send manipulation order by software.
Upper machine communication circuit: send host computer by RS485 interface circuit or ethernet interface circuit to needing the test figure uploaded, and need the Parameter transfer of manipulation order and the setting assigned host computer to test unit;
Touch-screen: carry out optimum configurations, order assign and test figure and test findings display;
RS232 communicating circuit: be responsible for and the information interaction of touch screen, assigns in the optimum configurations of touch screen, order to complete, the display of test figure and test findings;
Illuminating lamp: cabinet intraoral illumination is provided;
Lighting circuit: for device inside illumination so as maintenance and check inner case;
Dolly: the telecontrol equipment of loading test sample, its motion has been come by intelligent driving circuit control step motor;
Intelligence driving circuit: run by regulation by controlling dolly;
Fan: smog and hot air discharge are gone out;
Smoke evacuation circuit: the start-stop controlling fan, thus the hot gas after test and smog are emitted through passing through fan, to test next time;
Function of the present invention is realized by software program, and software program comprises primary control program, host computer signal procedure, touch-control display routine, motion control program, temperature control program, thermometric program, current measurement program, voltage-regulation program, flame identification program and defence program.
Various software function is as follows:
Primary control program: be responsible for monitoring and call each function program, completing all processes of glow wire test;
Host computer signal procedure: be responsible for the parameter and the order that receive host computer, and the various test figures obtained are uploaded to host computer;
Touch-control display routine: be responsible for the order and the parameter that receive touch-screen, and the test figure measured and test findings are shown;
Motion control program: the movement, start-stop, location etc. of being responsible for dolly;
Temperature control program: regulated the change controlling glow wire temperature by PID;
Thermometric program: be responsible for the digital signal reading temperature measurement circuit, by calculating the Current Temperatures knowing glowing filament;
Current measurement program: carried out the measurement to glowing filament electric current by the collection of current signal;
Voltage-regulation program: be responsible for regulating silicon controlled conduction angle to control the voltage of automatic voltage regulator output;
Flame identification program: carry out image procossing by the image taken high-definition camera, is identified flame by the algorithm extracting flame contours, is measured flame height and burning time, to judge that whether test specimen is qualified;
Defence program is under the state of the limit, to the protection of its one, by limiting the maximum step number of stepper motor, the maximal value of electric current and the maximal value of temperature, risk is reduced.
The present invention can complete test temperature to test unit and the isoparametric setting of test period by host computer or touch-screen; After test unit receives host computer or the order of touch-screen on-test, temperature according to arranging heats, after temperature arrives and stablizes official hour, drive the dolly carrying test specimen to be automatically moved to glowing filament top to test, measured glow wire temperature value and current value is recorded in process of the test, and automatically record experimental phenomena by the high-definition camera of flame identification circuit, and by image processing techniques, automatically identify whether flame exists by algorithm, the time of flame combustion and the height etc. of flame; According to the order of host computer after off-test, recorded test figure is uploaded to host computer and carries out unified management; Finally start smoke evacuation system, smog emission is gone out.
The present invention accomplishes conveniently to assign instruction, transmission data accurately and timely, precise and stable control operation process, careful perfect report test result, forms the test system of complete set intelligence.Realization is to the watchcase of intelligent electric meter and terminal is heat-resisting and flame retardant test reaches standard and the safety management to user power utilization.
Claims (7)
1. the invention provides a kind of novel glow wire test's device, it comprises automatic voltage regulator, current lifting device, glowing filament, high-definition camera, flame identification circuit, current transformer, current measurement circuit, thermopair, temperature measurement circuit, governor circuit, memory circuit, clock circuit, host computer, upper machine communication circuit, touch-screen, RS232 communicating circuit, illuminating lamp, lighting circuit, dolly, intelligent driving circuit, smoke evacuation circuit, fan; It is characterized in that described automatic voltage regulator control end is connected with governor circuit; Described automatic voltage regulator output terminal is connected with current lifting device input end; The output terminal of described current lifting device is connected with glowing filament; Described current measurement circuit input end is connected with glowing filament via current transformer; The output terminal of described current measurement circuit is connected with governor circuit; Described temperature measurement circuit signal input part is connected with the closely connected thermocouple signal in glowing filament; Described temperature measurement circuit digital output end is connected with governor circuit; Described flame identification circuit input end is connected with high-definition camera, and output terminal is connected with governor circuit; Described memory circuit is connected with governor circuit; Described clock circuit is connected with governor circuit; Described upper machine communication circuit on one side is connected with governor circuit, and the other end is connected with host computer; Described RS232 communicating circuit one end is connected with governor circuit, and the other end is connected with touch-screen; Described intelligent driving circuit control end is connected with governor circuit, and output terminal is connected with dolly; Described smoke evacuation control circui end is connected with governor circuit, exports and is connected with fan; Described lighting circuit control end is connected with governor circuit, and output terminal is connected with illuminating lamp.
2. the novel glow wire test's device of one according to claim 1, it is characterized in that described flame identification circuit, by high-definition camera, image during flame combustion is taken, take image recognition technology, by algorithm, image is analyzed, complete and identify flame, measure flame height and burning time.
3. the novel glow wire test's device of one according to claim 1, is characterized in that described automatic voltage regulator is by regulating silicon controlled conduction angle, realizes automatically regulating output voltage.
4. the novel glow wire test's device of one according to claim 1, it is characterized in that described current measurement circuit Current Transformer reduces the big current flowing through glowing filament, the sampling resistor of series connection high precision, high stability, by the measurement of effective value measurement circuit realiration to glowing filament electric current.
5. the novel glow wire test's device of one according to claim 1, is characterized in that described upper machine communication circuit realiration and the information interaction of host computer.
6. the novel glow wire test's device of one according to claim 1, it is characterized in that described intelligent driving circuit is by driving and control step motor, stepper motor promotes dolly and completes the functions such as automatic movement, location, start-stop, in process of the test, by counterweight, test specimen is applied with to the pressure of regulation.
7. the novel glow wire test's device of one according to claim 1, is characterized in that described smoke evacuation circuit is after off-test, automatically starts fan and the hot gas after test and smog are emitted through screen pack, to test next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035669.3A CN105466968A (en) | 2016-01-20 | 2016-01-20 | Novel glow wire testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035669.3A CN105466968A (en) | 2016-01-20 | 2016-01-20 | Novel glow wire testing device |
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| CN105466968A true CN105466968A (en) | 2016-04-06 |
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| CN201610035669.3A Pending CN105466968A (en) | 2016-01-20 | 2016-01-20 | Novel glow wire testing device |
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| CN110873779A (en) * | 2018-09-04 | 2020-03-10 | 张家港中集圣达因低温装备有限公司 | Ignition test device |
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Application publication date: 20160406 |