CN108344833B - Automatic measuring and burning device for heating plate of thermal battery and detection method thereof - Google Patents
Automatic measuring and burning device for heating plate of thermal battery and detection method thereof Download PDFInfo
- Publication number
- CN108344833B CN108344833B CN201810321983.7A CN201810321983A CN108344833B CN 108344833 B CN108344833 B CN 108344833B CN 201810321983 A CN201810321983 A CN 201810321983A CN 108344833 B CN108344833 B CN 108344833B
- Authority
- CN
- China
- Prior art keywords
- heating plate
- shell
- control computer
- digital camera
- burning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/30—Deferred-action cells
- H01M6/36—Deferred-action cells containing electrolyte and made operational by physical means, e.g. thermal cells
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses an automatic measuring and burning device for heating plates of a thermal battery and a detection method thereof, comprising a speed measuring bracket for placing the heating plates, an igniter positioned at one side of the speed measuring bracket, a digital camera arranged above the speed measuring bracket and provided with a camera bracket, a lens arranged on the digital camera and provided with a light filtering device, and a light filtering device arranged on the lens; the igniter is connected with the ignition controller, and the ignition controller controls the igniter to ignite the heating sheet on the speed measuring bracket. The invention is used for detecting the combustion speed of the heating plate of the thermal battery, is little influenced by human factors, has small detection error and saves the heating plate.
Description
Technical Field
The invention relates to the technical field of thermal batteries, in particular to an automatic measuring and fuel speed measuring device for a thermal battery heating plate and a detection method thereof.
Background
The thermal battery is a molten salt electrolyte reserve battery, and has high specific energy and specific power, and can normally work in various severe environments, so that the thermal battery is widely applied to aerospace products, the thermal battery is generally cylindrical in shape and internally provided with a plurality of groups of single batteries, the single batteries are generally about 2V, the positive electrode of each single battery is connected with the negative electrode of the adjacent single battery through a metal conducting plate, if n single batteries are connected in series, the output voltage is n times of the voltage of the single batteries. The five kinds of sheets are all made into round shapes, electrolyte in the thermal battery is a non-conductive solid at normal temperature, electrode active substances and the electrolyte do not react with each other chemically, the battery is in a non-working state, the self-discharge of the battery is very little, and when in use, the heating sheet in the battery is ignited by adopting current, so that the temperature in the battery is quickly raised to more than 800 ℃, the battery is activated, and the required direct current voltage and current can be provided for the electric components in a short time. The detection of the burning rate of the heater chip is critical, and the discharge time of the thermal battery and the product quality of the heater chip are determined by means of the detection data. However, the existing detection technology is almost completed manually, a tester lays a heating sheet belt of more than 10 meters on a plane field, the heating sheet is manually ignited, the stopwatch is manually pressed down for timing, the stopwatch is manually pressed down for stopping timing when the heating sheet is burnt out, and the burning speed of the heating sheet is obtained through time and length conversion. The disadvantages of the prior art are: the detection is influenced by human factors, the burning speed of the heating plate is high, the detection error is large, and a large amount of heating plates are wasted. The device for automatically measuring the burning speed by adopting the heating plate of the thermal battery overcomes the defects, improves the measurement accuracy and saves manpower and material resources.
In the prior art, manual testing is adopted, and ignition of the heating plates of the thermal batteries is realized by manual ignition by matches, so that the ignition is dangerous and inconvenient.
Disclosure of Invention
In view of at least one defect in the prior art, the invention aims to provide an automatic measuring and burning device for a heating plate of a thermal battery and a detecting method thereof, which are used for detecting the burning speed of the heating plate of the thermal battery, have small influence of human factors and small detection error and save the heating plate.
In order to achieve the aim, the invention adopts the following technical scheme that the automatic measuring and burning device for the heating plate of the thermal battery is characterized by comprising a speed measuring bracket for placing the heating plate, an igniter positioned at one side of the speed measuring bracket, wherein the igniter is used for igniting the heating plate on the speed measuring bracket, a digital camera is further arranged above the speed measuring bracket and supported by the camera bracket, a light filtering device is arranged on a lens of the digital camera, and the light filtering device is provided with a light filter; the igniter is connected with the ignition controller, and the ignition controller controls the igniter to ignite the heating sheet on the speed measuring bracket.
The ignition controller of the invention can be a remote control button, the ignition controller can also be a computer for presetting an ignition program, and can also be a wireless remote control switch signal. These are all well known techniques.
According to the invention, through the arrangement of the structure, the heating plate of the thermal battery is placed on the speed measuring bracket, the igniter is remotely controlled to be electrified through the ignition controller, the igniter heats and ignites the heating plate, the high-speed digital camera is used for capturing images and photographs to obtain the burning time of the heating plate, namely, the burning start and stop time of the heating plate is checked through slow release of the digital camera, the digital camera can display the shooting time, the burning speed of the heating plate can be calculated by combining the length of the heating plate belt, and the burning speed is equal to the length of the heating plate belt divided by the burning start and stop time, namely, the method of the background technology.
The ignition controller can also be a control computer, the control computer acquires image data of the digital camera, the image processing software is adopted to analyze and screen out the number of images with bright spots, and the combustion speed of the heating plate is calculated by combining the sampling frequency f of the digital camera and the diameter d of the heating plate. The light filtering device is provided with a light filter; the optical filter is used for removing stray light, so that the burning brightness of the heating plate can be captured conveniently. The method only needs to place a heating plate on the speed measuring bracket.
The ignition controller is a control computer; the digital camera is connected with the control computer, the control computer obtains a burning image photo of the heating plate, which is shot by the digital camera, and the control computer calculates the burning speed of the heating plate according to the burning image photo of the heating plate.
The effect that above-mentioned structure set up is: the control computer adopts image processing software to analyze and screen out the number of images with bright spots, and calculates the burning speed of the heating plate by combining the sampling frequency f of the digital camera and the diameter d of the heating plate.
The camera support comprises a base, a telescopic rod is vertically arranged on the base, a hanging rod is transversely arranged at the top end of the telescopic rod, and the digital camera is fixedly arranged on the hanging rod.
The effect that above-mentioned structure set up is: the telescopic link is used for adjusting the distance between digital camera and the heating plate, is convenient for catch the suitable image photo of size.
The speed measuring bracket and the igniter are arranged in a sealed shell, the shell comprises a shell body and a shell cover, the shell cover is made of transparent materials, an annular groove is formed in the upper end face of the shell body, a sealing ring is arranged in the groove, the upper end face of the sealing ring extends out of the groove to be abutted with the shell cover, and the shell cover is connected with the outer side of the shell body through a lock catch assembly; the inner wall of the shell is provided with a pressure sensor, the shell is also connected with a vacuum pump through an electromagnetic extraction valve, the pressure sensor detects the air pressure signal in the shell and transmits the air pressure signal to a control computer, and the control computer controls the electromagnetic extraction valve and the vacuum pump to be switched on and off; the shell is also connected with a manual air release valve.
Because the heating plate is likely to be used in the plateau area, the plateau area is low in air pressure, influences the combustion speed of heating plate, and the effect that above-mentioned structure set up is: the low air pressure in the plateau area was simulated, and the burning rate of the heating plate at the low air pressure was measured.
The vacuum pump is used to pump the gas in the housing, reducing the pressure, rather than drawing a vacuum.
The speed measuring bracket and the igniter are arranged in the sealed shell, the electromagnetic extraction valve and the vacuum pump are controlled to be opened by the control computer, the shell is vacuumized, the air pressure in the shell can be reduced, and the pressure sensor is used for detecting the air pressure in the shell; when the pressure in the shell reaches the air pressure threshold value set by the control computer, the control computer controls the electromagnetic air extracting valve and the vacuum pump to be closed.
The shell cover is made of transparent materials, so that the digital camera can shoot conveniently, after shooting is finished, the manual air release valve is opened to release air pressure, and then the shell cover and the shell body can be disassembled rapidly by opening the lock catch assembly.
The inner wall of the shell is also provided with a temperature and humidity sensor, the shell is also connected with a boiler through an electromagnetic humidification valve, a temperature and humidity signal detected by the temperature and humidity sensor in the shell is transmitted to a control computer, and the control computer controls the switch of the electromagnetic humidification valve;
the bottom of the outer wall of the shell is also provided with a condenser, the condenser is connected with refrigeration equipment, and the control computer also controls the switch of the refrigeration equipment.
Wherein the boiler is used for heating water to produce steam.
In order to detect the combustion speed of the heating plate in the high-humidity area, the shell is further connected with a boiler through an electromagnetic humidification valve, the electromagnetic humidification valve is opened by the control computer, water vapor can be supplemented to the shell, a temperature and humidity sensor detects that a temperature and humidity signal in the shell is transmitted to the control computer, and when the humidity signal reaches a humidity threshold value of the control computer, the electromagnetic humidification valve is closed by the control computer.
In winter, the temperature of some places is very low, in order to detect the burning rate of heating plate in the low temperature area, the outer wall bottom of casing still is provided with the condenser, and control computer still controls refrigeration plant and opens, cools down for the casing through the condenser, simulates the burning rate of heating plate in low temperature environment. The control computer acquires a temperature signal in the shell through the temperature and humidity sensor, and when the temperature signal reaches a temperature threshold value of the control computer, the control computer turns off the refrigeration equipment
Wherein the condenser and the refrigeration equipment are of the prior art.
At least one annular leakage-proof groove is arranged on the upper surface and the lower surface of the sealing ring.
By adding the leakage-proof grooves on the upper surface and the lower surface of the sealing ring, the length of the air leakage channel is increased, and the air leakage is reduced. After vacuum pumping and pressure reduction, external air is prevented from entering the shell.
The speed measuring support comprises a support column, at least three support bars which are radially arranged are fixedly arranged at the upper end of the support column, and a spring chuck is arranged at the tail end of the support bars. Above-mentioned structure sets up the support heating plate of being convenient for to the heating plate upper and lower side all contacts with the air, does not influence the burning rate of heating plate, and the collet chuck is used for holding the heating plate, prevents that the heating plate from vibrating in the burning process, influences digital camera shooting.
The optical filter device comprises a cylindrical optical filter cover, an optical filter is fixedly arranged at the lower end of the optical filter cover, at least three sliding grooves are formed in the inner wall of the optical filter cover along the radial direction, sliding blocks are arranged in the sliding grooves in the radial direction in a sliding manner, the sliding blocks are connected with the bottoms of the sliding grooves through springs, inclined planes are arranged on the inner sides of one ends of the sliding blocks facing the digital video camera, the sliding blocks are extruded to shrink inwards the sliding grooves by the lenses under the action of external force, the lenses are inserted between the sliding blocks, and the lenses are clamped by the sliding blocks under the reverse thrust of the springs, so that the optical filter device is clamped at the lower ends of the lenses.
The effect that above-mentioned structure set up is: the filter device is convenient to rapidly assemble and disassemble, when the filter cover is grasped by hands to force the filter cover to the direction of the lens, the outer wall of the lens extrudes the inclined plane to enable the sliding blocks to shrink inwards towards the sliding grooves, the distance between the sliding blocks is increased, the lens is inserted between the sliding blocks, and the sliding blocks clamp the lens under the reverse thrust of the spring.
The filter cover and the sliding block are made of plastic, so that the outer wall of the lens is prevented from being damaged.
The ignition coil of the igniter is connected with the heating plate through the gunpowder twister; a light shield is arranged above the gunpowder twister and covers the gunpowder twister. The gunpowder twists are used for igniting.
The ignition coil is connected with the heating plate through the gunpowder twister; facilitating more reliable ignition of the heater chip; the light shield shields the light emitted when the gunpowder twists burn, and the light emitted when the gunpowder twists burn is prevented from affecting the light when the digital camera shoots the heating plate to burn.
A control method of a device for automatically measuring the burning rate of a heating plate of a thermal battery is used for the device for automatically measuring the burning rate of the heating plate of the thermal battery, and is characterized in that: the method comprises the following steps:
step A: the control computer obtains the sampling frequency f of the digital camera input by the user, and the diameter d of the heating plate;
and (B) step (B): the control computer acquires a user instruction to control the igniter to ignite the heating plate on the speed measuring bracket; the digital video camera is controlled to record the video while the heating plate is ignited;
step C: the control computer acquires a heating plate burning image picture which is captured by the digital camera;
step D: the control computer analyzes and screens out the number of the images with the bright spots to be n through image processing software;
because the stray light is filtered out by the optical filter, the image with the bright spots is conveniently analyzed and screened by the image processing software, and the identification technology of the image processing software belongs to the prior art and belongs to the category of machine vision;
step E: the control computer is according to the formula: v=d/(n (1/f)) to calculate the burning rate of the heater plate;
wherein V is the combustion speed of the heating plate, f is the sampling frequency of the digital camera, and d is the diameter of the heating plate.
When the heating plate burns, the diameter of the heating plate is known as d, the computer screens out the number of images with bright spots as n through analysis of image processing software, the sampling frequency of the images is f, v is set to be equal to the burning speed of the heating plate, and the method is as follows: v=d/(n (1/f)) the burning rate of the heater plate can be calculated.
By the arrangement of the method, the combustion speed of the heating plate can be conveniently calculated; the influence of artificial timing factors is reduced, the detection error is small, and a large number of heating plates are saved.
The invention has the beneficial effects that the device and the method for automatically measuring the fuel speed of the heating plate of the thermal battery are used for detecting the combustion speed of the heating plate of the thermal battery, are little influenced by human factors, have small detection error and save the heating plate.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1;
fig. 3 is an enlarged view of a portion B of fig. 1;
FIG. 4 is a block diagram of a speed bracket;
FIG. 5 is a block diagram of a filter device;
fig. 6 is a structural view of the igniter.
FIG. 7 is an exploded view of FIG. 6;
FIG. 8 is a circuit diagram of an ignition circuit;
FIG. 9 is a circuit block diagram of the present invention;
fig. 10 is a flow chart of the method of the present invention.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
As shown in fig. 1-10, the invention provides an automatic measuring and burning device for heating plates of a thermal battery, which comprises a speed measuring bracket 1 for placing heating plates, an igniter 2 positioned at one side of the speed measuring bracket 1, wherein the igniter 2 is used for igniting the heating plates on the speed measuring bracket 1, a digital camera 3 is arranged above the speed measuring bracket 1, the digital camera 3 is supported by a camera bracket 31, a lens 32 of the digital camera 3 is provided with a light filtering device 33, and the light filtering device 33 is provided with a light filter 331; the igniter 2 is connected with an ignition controller, and the ignition controller controls the igniter 2 to ignite the heating plate on the speed measuring bracket 1.
The ignition controller of the invention can be a remote control button, a computer for presetting an ignition program, or a wireless remote control switch signal. These are all well known techniques.
The digital camera 3 is supported on the ground via a camera support 31.
According to the invention, through the arrangement of the structure, the heating plate of the thermal battery is placed on the speed measuring bracket 1, the igniter 2 is remotely controlled to be electrified through the ignition controller, the igniter 2 heats and ignites the heating plate, the high-speed digital camera 3 is used for capturing images to obtain the burning time of the heating plate, namely, the burning start and stop time of the heating plate is checked through the slow release of the digital camera 3, the digital camera 3 can display the shooting time, the burning speed of the heating plate can be calculated by combining the length of the heating plate belt, and the burning speed is equal to the length of the heating plate belt divided by the burning start and stop time, namely, the method of the background technology.
The ignition controller of the invention can also be a control computer, the control computer obtains the image data of the digital camera 3, the image processing software is adopted to analyze and screen out the number of the images with the bright spots, and the burning speed of the heating plate is calculated by combining the sampling frequency f of the digital camera 3 and the diameter d of the heating plate. The filter device 33 is provided with a filter 331; the optical filter 331 is used for removing stray light, so as to capture the burning light of the heating plate. In this way, only one heating plate needs to be placed on the speed measuring bracket 1.
The ignition controller is a control computer 4; the digital camera 3 is connected with the control computer 4, the control computer 4 obtains the burning image photo of the heating plate which is shot by the digital camera 3, and the control computer 4 calculates the burning speed of the heating plate according to the burning image photo of the heating plate.
The effect that above-mentioned structure set up is: the control computer 4 adopts image processing software to analyze and screen out the number of images with bright spots, and calculates the burning speed of the heating plate by combining the sampling frequency f of the digital camera 3 and the diameter d of the heating plate.
The camera support 31 comprises a base 311, a telescopic rod 312 is vertically arranged on the base 311, a hanging rod 313 is transversely arranged at the top end of the telescopic rod 312, and the digital camera 3 is fixedly arranged on the hanging rod 313.
The effect that above-mentioned structure set up is: the telescopic rod 312 is used for adjusting the distance between the digital camera 3 and the heating plate, so that an image picture with proper size can be captured.
A sliding sleeve 314 is fixedly arranged at the upper end of the digital camera 3; the sliding sleeve 314 is slidably arranged on the hanging rod 313, the sliding sleeve 314 is also radially provided with a set screw 315 in a penetrating manner, and the set screw 315 fixes the sliding sleeve 314 on the hanging rod 313.
The effect that above-mentioned structure set up is: the digital camera 3 can slide left and right on the boom 313 by loosening the set screw 315, and after moving to a proper position, the set screw 315 is tightened to fasten the digital camera 3 to the boom 313.
The speed measuring bracket 1 and the igniter 2 are both arranged in a sealed shell 6, the shell 6 comprises a shell body 61 and a shell cover 62, the shell cover 62 is made of transparent materials, an annular groove 611 is formed in the upper end face of the shell body 61, a sealing ring 63 is arranged in the groove 611, the upper end face of the sealing ring 63 extends out of the groove 611 to be abutted to the shell cover 62, and the shell cover 62 is connected with the outer side of the shell body 61 through a lock catch assembly 70; the inner wall of the shell 6 is provided with a pressure sensor 64, the shell 6 is also connected with a vacuum pump 66 through an electromagnetic extraction valve 65, the pressure sensor 64 detects the air pressure signal in the shell 6 and transmits the air pressure signal to the control computer 4, and the control computer 4 controls the electromagnetic extraction valve 65 and the vacuum pump 66 to be opened and closed; the housing 61 is also connected to a manual purge valve 72.
Because the heating plate is likely to be used in the plateau area, the plateau area is low in air pressure, influences the combustion speed of heating plate, and the effect that above-mentioned structure set up is: the low air pressure in the plateau area was simulated, and the burning rate of the heating plate at the low air pressure was measured.
The vacuum pump 66 is used to pump the gas in the housing 6, reducing the gas pressure, rather than drawing a vacuum.
The speed measuring bracket 1 and the igniter 2 are arranged in the sealed shell 6, the electromagnetic extraction valve 65 and the vacuum pump 66 are controlled to be opened through the control computer 4, the shell 6 is vacuumized, the air pressure in the shell 6 can be reduced, and the pressure sensor 64 is used for detecting the air pressure in the shell 6; when the pressure in the casing 6 reaches the air pressure threshold value set by the control computer 4, the control computer 4 controls the electromagnetic suction valve 65 and the vacuum pump 66 to be closed.
The cover 62 is made of transparent material, so that the digital camera 3 can shoot conveniently, after shooting is finished, the manual air release valve 72 is opened to release air pressure, and then the cover 62 and the cover body 61 can be rapidly disassembled by opening the lock catch assembly 70.
The control computer 4 is internally provided with a pressure control device, the pressure control device obtains a pressure threshold value input by a user, controls the electromagnetic extraction valve 65 and the vacuum pump 66 to open for extraction, obtains a pressure signal detected by the pressure sensor 64, and controls the extraction valve 65 and the vacuum pump 66 to close when the pressure signal of the pressure sensor 64 is equal to the pressure threshold value input by the user.
The inner wall of the shell 6 is also provided with a temperature and humidity sensor 67, the shell 6 is also connected with a boiler 69 through an electromagnetic humidification valve 68, a temperature and humidity signal detected by the temperature and humidity sensor 67 in the shell 6 is transmitted to the control computer 4, and the control computer 4 controls the switch of the electromagnetic humidification valve 68;
the bottom of the outer wall of the shell 6 is also provided with a condenser 71, the condenser 71 is connected with a refrigerating device, and the control computer 4 also controls the switch of the refrigerating device.
In order to detect the combustion speed of the heating plate in the high humidity area, the shell 6 is also connected with a boiler 69 through an electromagnetic humidification valve 68, the electromagnetic humidification valve 68 is opened by the control computer 4, water vapor can be supplemented to the shell 6, a temperature and humidity signal in the shell 6 is detected by a temperature and humidity sensor 67 and transmitted to the control computer 4, and when the humidity signal reaches a humidity threshold value of the control computer 4, the electromagnetic humidification valve 68 is closed by the control computer 4.
In winter, the temperature is very low in some places, in order to detect the combustion speed of the heating plate in the low-temperature area, the bottom of the outer wall of the shell 6 is also provided with a condenser 71, the control computer 4 also controls the refrigeration equipment to be turned on, and the shell 6 is cooled through the condenser 71 to simulate the combustion speed of the heating plate in the low-temperature environment. The control computer 4 acquires a temperature signal in the shell 6 through the temperature and humidity sensor 67, and when the temperature signal reaches a temperature threshold value of the control computer 4, the control computer 4 turns off the refrigeration equipment.
Wherein condenser 71 and refrigeration equipment are well known in the art.
A humidity control device is arranged in the control computer 4, the humidity control device obtains a humidity threshold value input by a user and controls the electromagnetic humidification valve 65 to be opened and humidified, the humidity control device obtains a humidity signal of the temperature and humidity sensor 67, and when the humidity control device judges that the humidity signal of the temperature and humidity sensor 67 is equal to the humidity threshold value input by the user, the electromagnetic humidification valve 65 is controlled to be closed;
the temperature control device is arranged in the control computer 4 and used for acquiring a temperature threshold value input by a user, the temperature control device is used for controlling the refrigeration equipment to be opened and cooled, the temperature control device is used for acquiring a temperature signal of the temperature and humidity sensor 67, and when the temperature control device judges that the temperature signal of the temperature and humidity sensor 67 is equal to the temperature threshold value input by the user, the temperature control device is used for controlling the electromagnetic humidification valve 65 to be closed.
At least one annular leakage-proof groove 63a is arranged on the upper surface and the lower surface of the sealing ring 63.
By adding the leakage preventing grooves 63a to the upper and lower surfaces of the sealing ring 63, the length of the air leakage path is increased, and the leakage of air is reduced. After the vacuum is drawn and reduced, the outside air is prevented from entering the housing 6.
The speed measuring bracket 1 comprises a support 11, at least three radially arranged bracket strips 12 are fixedly arranged at the upper end of the support 11, and a spring chuck 13 is arranged at the tail end of the bracket strips 12.
The lower end of the strut 11 is fixed at the bottom of the inner cavity of the housing 6.
As shown in fig. 3, the spring chuck 13 includes a clamping piece 131, an outer end of the clamping piece 131 is hinged to an end of the bracket strip 12, a tension spring 132 is disposed between an inner end of the clamping piece 131 and the bracket strip 12, and a latch 133 is further disposed on a lower surface of the inner end of the clamping piece.
The above-mentioned structure sets up the support heating plate of being convenient for to the heating plate upper and lower side all contacts with the air, does not influence the burning rate of heating plate, and spring chuck 13 is used for holding the heating plate, prevents that the heating plate from vibrating in the burning process, influences digital camera 3 and shoots.
The filtering device 33 includes a cylindrical filtering cover 332, a filtering plate 331 is fixed at the lower end of the filtering cover 332, at least three sliding grooves 333 are radially provided on the inner wall of the filtering cover 332, sliding blocks 334 are slidably provided in the sliding grooves 333 in the radial direction, the sliding blocks 334 are connected with the bottom of the sliding grooves 333 through springs 335, inclined planes 334a are provided on the inner sides of one ends of the sliding blocks 334 facing the digital camera 3, the lens 32 presses the inclined planes 334a under the action of external force to enable the sliding blocks 334 to retract inwards the sliding grooves 333, the lens 32 is inserted between the sliding blocks 334, and the sliding blocks 334 clamp the lens 32 under the reverse thrust of the springs 335, so that the filtering device 33 is clamped at the lower end of the lens 32.
The effect that above-mentioned structure set up is: when the filter cover 332 is grasped by hand to force the lens 32, the outer wall of the lens 32 presses the inclined surface 334a to retract the slide blocks 334 toward the slide grooves 333, the distance between the slide blocks 334 increases, the lens 32 is inserted between the slide blocks 334, and the slide blocks 334 clamp the lens 32 under the reverse thrust of the spring 335.
The filter cover 332 and the slider 334 are both made of plastic, so as to avoid damaging the outer wall of the lens 32.
The ignition coil 21 of the igniter 2 is connected with a heating plate through the gunpowder twister 5; a light shield 51 is arranged above the gunpowder twister 5, and the light shield 51 shields the gunpowder twister 5. The lower end of the light shield 51 is supported at the bottom of the inner cavity of the housing 6.
The ignition coil 21 is connected with a heating plate through the gunpowder twister 5; facilitating more reliable ignition of the heater chip; the light shield 51 shields the light emitted when the gunpowder twists 5 burn, and prevents the light emitted when the gunpowder twists 5 burn from affecting the light of the digital camera 3 when the heating plate burns.
A control method of a device for automatically measuring the burning rate of a heating plate of a thermal battery is used for the device for automatically measuring the burning rate of the heating plate of the thermal battery, and is characterized in that: the method comprises the following steps:
step A: the control computer 4 acquires the sampling frequency f of the digital camera 3 input by a user and the diameter d of the heating plate;
and (B) step (B): the control computer 4 acquires a user instruction to control the igniter 2 to ignite the heating plate on the speed measuring bracket 1; the digital camera 3 is controlled to record the video while the heating plate is ignited;
step C: the control computer 4 acquires a heating plate burning image picture shot by the digital camera 3;
step D: the control computer 4 analyzes and screens out the number of the images with the bright spots to be n through image processing software;
because stray light is filtered out by the optical filter 331, the image processing software can conveniently analyze and screen out images with bright spots, and the identification technology of the image processing software belongs to the prior art;
step E: the control computer 4 follows the formula: v=d/(n (1/f)) to calculate the burning rate of the heater plate;
where V is the burning rate of the heater chip, f is the sampling frequency of the digital camera 3, and d is the heater chip diameter.
By the arrangement of the method, the combustion speed of the heating plate can be conveniently calculated; the influence of artificial timing factors is reduced, the detection error is small, and a large number of heating plates are saved.
The igniter 2 comprises a shell 22, two porcelain bushing posts 23 and an ignition coil 21, wherein two through holes are formed in the upper surface of the shell 22, the lower ends of the two porcelain bushing posts 23 penetrate into the shell 22 through the holes respectively to be fixed, the ignition coil 21 is arranged between the upper ends of the two porcelain bushing posts 23, the two porcelain bushing posts 23 are respectively provided with an axle center hole, two ends of the ignition coil 21 penetrate into an inner cavity of the shell 22 through the axle center holes, a porcelain wiring terminal 24 is fixedly arranged in the inner cavity of the shell 22, two ends of the ignition coil 21 are connected with two output ends of the porcelain wiring terminal 24, and two input ends of the porcelain wiring terminal 24 are used for connecting an ignition circuit.
The two porcelain bushing studs 23 are used for supporting and fixing the ignition coil 21, the porcelain wiring terminals 24 are convenient to connect the ignition coil 21 with an ignition circuit, the ignition coil 21 is electrified through the ignition circuit, the ignition coil 21 is heated to reddish, and the heating plate and the ignition paper are ignited.
The invention is used for ignition of the heating plate and the ignition paper of the thermal battery, and has the characteristics of compact structure, convenient carrying and maintenance, safety and reliability.
The ignition circuit comprises a relay J and a transformer BY; the control computer 4 controls the on-off of the coil of the relay J, the normally open switch of the relay J controls the on-off of the alternating current power supply of the primary coil of the transformer BY, and the two ends of the secondary coil of the transformer BY are connected with the two input ends of the porcelain wiring terminal 24.
The coil of the relay J is remotely controlled to be electrified through the control computer 4, the normally open switch of the relay J is closed, the primary coil of the control transformer BY is connected with an alternating current power supply, the two ends of the secondary coil of the transformer BY output voltages, and the ignition coil 21 is electrified. Otherwise, the control computer 4 controls the ignition coil 21 to be deenergized.
The two porcelain bushing posts 23 are sleeved with a first sheath 26, and the first sheath 26 is fixedly connected with the upper surface of the shell 22.
The first sheath 26 is made of stainless steel material, and is beautiful and rust-proof.
The shell 22 comprises a shell body and an upper cover 211 fixed on the shell body, the upper cover 211 is provided with the through hole, the shell body comprises a rear seat 212 and a front seat 213 which are fixedly connected with each other, two opposite sides of the rear seat 212 and the front seat 213 are vertically provided with notches, an inner cavity of the shell 22 is surrounded by the two notches, the porcelain wiring terminal 24 is fixedly arranged in the inner cavity, the lower ends of the two porcelain bushing terminals 23 extend into the inner cavity through holes, and the lower ends of the inner cavity are opened.
The front seat 213 is provided with a through hole, a second sheath 27 is arranged in the through hole in a penetrating way, the inner end of the second sheath 27 stretches into the inner cavity, the outer end of the second sheath 27 stretches out of the front seat 213, the second sheath 27 is provided with a wire through hole, and two ends of a secondary coil of the transformer BY are connected with two input ends of the porcelain wiring terminal 24 through the wire through hole BY wires.
The upper cover 211, the rear seat 212, the front seat 213, and the second sheath 27 are all made of stainless steel materials. The upper cover 211, the rear seat 212 and the front seat 213 are connected by bolts.
The interior cavity also holds a desiccant pack 28.
The outer surfaces of the upper cover 211, the rear seat 212 and the front seat 213 are also provided with heat dissipation fins; the heat dissipation effect of the igniter is increased, which is not shown in this embodiment.
The ignition coil 21 is wound by a resistance wire.
The control computer 4 drives the electromagnetic extraction valve 65 and the vacuum pump 66, the igniter 2, the electromagnetic humidification valve 65 and the refrigeration equipment through the PLC and the relay.
Finally, it should be noted that: the above description is only illustrative of the specific embodiments of the invention and it is of course possible for those skilled in the art to make modifications and variations to the invention, which are deemed to be within the scope of the invention as defined in the claims and their equivalents.
Claims (9)
1. The automatic measuring and burning device for the heating plates of the thermal batteries is characterized by comprising a speed measuring support (1) for placing the heating plates, an igniter (2) positioned on one side of the speed measuring support (1), wherein the igniter (2) is used for igniting the heating plates on the speed measuring support (1), a digital camera (3) is further arranged above the speed measuring support (1), the digital camera (3) is supported by a camera support (31), a light filtering device (33) is arranged on a lens (32) of the digital camera (3), and the light filtering device (33) is provided with a light filter (331); the igniter (2) is connected with the ignition controller, and the ignition controller controls the igniter (2) to ignite the heating plate on the speed measuring bracket (1);
the speed measuring bracket (1) and the igniter (2) are arranged in a sealed shell (6), the shell (6) comprises a shell body (61) and a shell cover (62), the shell cover (62) is made of transparent materials, an annular groove (611) is formed in the upper end face of the shell body (61), a sealing ring (63) is arranged in the groove (611), the upper end face of the sealing ring (63) extends out of the groove (611) to be abutted to the shell cover (62), and the shell cover (62) is connected with the outer side of the shell body (61) through a lock catch assembly (70); the inner wall of the shell (6) is provided with a pressure sensor (64), the shell (6) is also connected with a vacuum pump (66) through an electromagnetic extraction valve (65), the pressure sensor (64) detects the air pressure signal in the shell (6) and transmits the air pressure signal to the control computer (4), and the control computer (4) controls the switch of the electromagnetic extraction valve (65) and the vacuum pump (66); the shell (61) is also connected with a manual air release valve (72).
2. The automatic measuring and burning rate device for heating plates of thermal battery according to claim 1, wherein: the ignition controller is a control computer (4); the digital camera (3) is connected with the control computer (4), the control computer (4) obtains a burning image photo of the heating plate, which is shot by the digital camera (3), and the control computer (4) calculates the burning speed of the heating plate according to the burning image photo of the heating plate.
3. The automatic measuring and burning rate device for heating plates of thermal battery according to claim 1, wherein: the camera support (31) comprises a base (311), a telescopic rod (312) is vertically arranged on the base (311), a hanging rod (313) is transversely arranged at the top end of the telescopic rod (312), and the digital camera (3) is fixedly arranged on the hanging rod (313).
4. The automatic measuring and burning rate device for heating plates of thermal battery according to claim 1, wherein: the inner wall of the shell (6) is also provided with a temperature and humidity sensor (67), the shell (6) is also connected with a boiler (69) through an electromagnetic humidification valve (68), a temperature and humidity signal detected by the temperature and humidity sensor (67) in the shell (6) is transmitted to the control computer (4), and the control computer (4) controls the switch of the electromagnetic humidification valve (68);
the bottom of the outer wall of the shell (6) is also provided with a condenser (71), the condenser (71) is connected with a refrigerating device, and the control computer (4) also controls the switch of the refrigerating device.
5. The automatic measuring and burning rate device for heating plates of thermal battery according to claim 1, wherein: at least one annular leakage-proof groove (63 a) is arranged on the upper surface and the lower surface of the sealing ring (63).
6. The automatic measuring and burning rate device for heating plates of thermal battery according to claim 1, wherein: the speed measuring bracket (1) comprises a support (11), at least three radially arranged bracket strips (12) are fixedly arranged at the upper end of the support (11), and a spring chuck (13) is arranged at the tail end of the bracket strips (12).
7. The automatic measuring and burning rate device for heating plates of thermal battery according to claim 1, wherein: the optical filter device (33) comprises a cylindrical optical filter cover (332), an optical filter (331) is fixedly arranged at the lower end of the optical filter cover (332), at least three sliding grooves (333) are formed in the inner wall of the optical filter cover (332) along the radial direction, sliding blocks (334) are arranged in the sliding grooves (333) in a sliding manner along the radial direction, the sliding blocks (334) are connected with the bottoms of the sliding grooves (333) through springs (335), inclined planes (334 a) are formed in the inner sides of one ends of the sliding blocks (334) facing the digital cameras (3), the inclined planes (334 a) are extruded by the lenses (32) under the action of external force, the sliding blocks (334) shrink inwards the sliding grooves (333), the lenses (32) are inserted between the sliding blocks (334) under the reverse thrust of the springs (335), and accordingly the optical filter device (33) is clamped at the lower ends of the lenses (32).
8. The automatic measuring and burning rate device for heating plates of thermal battery according to claim 1, wherein: the ignition coil (21) of the igniter (2) is connected with a heating plate through the gunpowder twister (5); a light shield (51) is arranged above the gunpowder twister (5), and the gunpowder twister (5) is covered by the light shield (51).
9. A detection method of a device for automatically measuring the burning rate of a heating plate of a thermal battery, which is used for the device for automatically measuring the burning rate of the heating plate of the thermal battery according to claim 2, and is characterized in that: the method comprises the following steps:
step A: the control computer (4) acquires the sampling frequency f of the digital camera (3) input by a user, and the diameter d of the heating plate;
and (B) step (B): the control computer (4) acquires a user instruction to control the igniter (2) to ignite the heating sheet on the speed measuring bracket (1); the digital video camera (3) is controlled to record the video while the heating plate is ignited;
step C: the control computer (4) acquires a burning image photo of the heating plate which is captured by the digital camera (3);
step D: the control computer (4) analyzes and screens out the number of the images with the bright spots to be n through image processing software;
step E: the control computer (4) is according to the formula: v=d/(n (1/f)) to calculate the burning rate of the heater plate;
wherein V is the combustion speed of the heating plate, f is the sampling frequency of the digital camera (3), and d is the diameter of the heating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810321983.7A CN108344833B (en) | 2018-04-11 | 2018-04-11 | Automatic measuring and burning device for heating plate of thermal battery and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810321983.7A CN108344833B (en) | 2018-04-11 | 2018-04-11 | Automatic measuring and burning device for heating plate of thermal battery and detection method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108344833A CN108344833A (en) | 2018-07-31 |
| CN108344833B true CN108344833B (en) | 2023-06-13 |
Family
ID=62957115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810321983.7A Active CN108344833B (en) | 2018-04-11 | 2018-04-11 | Automatic measuring and burning device for heating plate of thermal battery and detection method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108344833B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579582B (en) * | 2019-09-04 | 2021-11-26 | 盐城市质量技术监督综合检验检测中心 | Method for determining ignition time of fireworks and crackers and measuring device |
| CN110854398B (en) * | 2019-11-05 | 2023-02-03 | 中国工程物理研究院电子工程研究所 | Passive thermal battery activation device |
| CN113406264B (en) * | 2021-08-20 | 2021-11-16 | 中国工程物理研究院流体物理研究所 | Explosive burning rate non-contact type measurement experiment device and method based on terahertz waves |
| CN114563524A (en) * | 2022-02-15 | 2022-05-31 | 济南市工程质量与安全中心 | Automatic testing device for flame retardance of escape respirator |
| CN115453199B (en) * | 2022-09-14 | 2023-04-28 | 苏州鼎佳精密科技股份有限公司 | Automatic test equipment for new energy battery heating plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201732084U (en) * | 2010-06-18 | 2011-02-02 | 北京理工大学 | Device for measuring low temperature low pressure burning rate of matters |
| US8308352B1 (en) * | 2009-05-12 | 2012-11-13 | The Boeing Company | Thermal shock apparatus for simulating one-sided operational thermal gradients |
| CN104950007A (en) * | 2015-07-14 | 2015-09-30 | 西安近代化学研究所 | Solid-propellant ignition and burning speed integrated testing device |
| CN106442853A (en) * | 2016-09-07 | 2017-02-22 | 华中科技大学 | Droplet burning experiment device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3971883B2 (en) * | 2000-03-17 | 2007-09-05 | 松下電器産業株式会社 | Thermal battery |
| CN1687689A (en) * | 2005-04-29 | 2005-10-26 | 上海第二工业大学 | Device for measuring activation time of thermal cell |
| CN201188099Y (en) * | 2008-05-07 | 2009-01-28 | 郑州嘉德机电科技有限公司 | Determinator for cigarette freely combustion speed |
| CN201993377U (en) * | 2011-01-07 | 2011-09-28 | 重庆师范大学 | Burning speed detection device |
| CN105675795B (en) * | 2016-02-25 | 2017-06-06 | 中国工程物理研究院化工材料研究所 | Explosive valve cartridge case combustion rate of powder method of testing and device |
| CN107748221A (en) * | 2017-08-23 | 2018-03-02 | 江苏大学 | A kind of drop evaporation test device |
| CN107449934A (en) * | 2017-09-07 | 2017-12-08 | 贵州航天计量测试技术研究所 | A kind of calibrating installation and calibration method of Kindling paper burning velocity detecting system |
| CN208013165U (en) * | 2018-04-11 | 2018-10-26 | 重庆师范大学 | Thermal cell heating plate automatic measurement burn rate equipment |
-
2018
- 2018-04-11 CN CN201810321983.7A patent/CN108344833B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8308352B1 (en) * | 2009-05-12 | 2012-11-13 | The Boeing Company | Thermal shock apparatus for simulating one-sided operational thermal gradients |
| CN201732084U (en) * | 2010-06-18 | 2011-02-02 | 北京理工大学 | Device for measuring low temperature low pressure burning rate of matters |
| CN104950007A (en) * | 2015-07-14 | 2015-09-30 | 西安近代化学研究所 | Solid-propellant ignition and burning speed integrated testing device |
| CN106442853A (en) * | 2016-09-07 | 2017-02-22 | 华中科技大学 | Droplet burning experiment device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108344833A (en) | 2018-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108344833B (en) | Automatic measuring and burning device for heating plate of thermal battery and detection method thereof | |
| WO2020052286A1 (en) | Method for collecting and testing lithium ion battery thermal runaway products | |
| WO2022012017A1 (en) | Machine vision-based flying cigarette ash detection device and detection method | |
| WO2016090832A1 (en) | Production process and production line for led lamps | |
| CN105894936B (en) | A kind of underground coal mine exogenous fire small size simulated experiment platform | |
| CN210720672U (en) | Battery thermal shock test device | |
| CN208013165U (en) | Thermal cell heating plate automatic measurement burn rate equipment | |
| CN103716598A (en) | Baking dedicated camera | |
| CN108267695A (en) | A kind of analysis test method based on pressure lithium battery interior short circuit | |
| CN204694665U (en) | Flash-point pick-up unit | |
| CN109332205A (en) | A kind of battery welding spot detector device | |
| CN201188099Y (en) | Determinator for cigarette freely combustion speed | |
| CN204718960U (en) | A kind of criminal investigation Handheld laser vestige scanner | |
| CN110736766A (en) | light-heat storage performance tester and testing method | |
| CN209901750U (en) | Battery appearance detection machine | |
| CN208109739U (en) | The micro full-automatic analyzer of close flash point | |
| CN110376245A (en) | A kind of visual combustion chamber | |
| CN207365918U (en) | A kind of hand-held line width detector | |
| CN211414225U (en) | O-shaped ring assembling tool | |
| CN110501797B (en) | Infrared lens device capable of automatically detecting and identifying view field | |
| CN107991066B (en) | Automatic testing device for protective performance of hot solids of goggles for firefighters | |
| CN107976720B (en) | False alarm detection device and method for infrared detector | |
| CN215732015U (en) | Portable remote-control constant-current direct-current power supply | |
| CN220043377U (en) | Reverse current overload testing device for photovoltaic module | |
| CN221148520U (en) | Needle density detection equipment based on visual detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |