CN1259557C - Improved device for fast detecting aged sample - Google Patents
Improved device for fast detecting aged sample Download PDFInfo
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- CN1259557C CN1259557C CN 02108736 CN02108736A CN1259557C CN 1259557 C CN1259557 C CN 1259557C CN 02108736 CN02108736 CN 02108736 CN 02108736 A CN02108736 A CN 02108736A CN 1259557 C CN1259557 C CN 1259557C
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Abstract
An apparatus for accelerated weathering testing specimens including dischar ge lamps as a concentrated light source for accelerating the deterioration of color, composition and/or structure of test specimens. Improved control calibration structures and methods of operation are also included. The test module to monitor the weathering test process from an improved location, detecting irradiance in the manner in which the specimens are exposed to such irradiance. The test modules are mounted in a pocket formed within the door for the test chamber such that the sensitive electronics of the modules are not exposed to the harsh environment within the test chamber, resulting in an exceptionally stable signal.
Description
Reference with related application
The application requires the right of priority of the U.S. Provisional Application number 60/280796 of April 2 calendar year 2001 application.
Technical field
The present invention relates to a kind of device of the aging effect of acceleration detection sample, relate in particular to a kind of have use for discharge lamp its device for fast detecting aged sample and method of operating thereof as the degeneration of color, composition and/or the structure of assembling light source acceleration detection sample, this device comprises improved control and calibration structure.The preferred embodiment of the present invention that is used for test sample uses fluorescent ultra-violet lamp as light source, and it is approximate natural light in the ultraviolet region of spectrum, causes thus degenerating, and will utilize it to be described as a reference.Yet, will be appreciated that other discharge lamp also can be used as light source, main example is xenon lamp or any other light source.
Background technology
The conventional sense device of use discharge lamp shown in Figure 1 has eight uviol lamps 10, and they are provided in the sensing chamber 12, and when they are aligned to the row of the downward dispersion of symmetry when the angle of xsect is observed.Want detected sample 14 to be placed on two relative sample support walls of pick-up unit frame, so that inwardly facing to uviol lamp and accept their irradiation.In the machine that illustrates, two samples are arranged, one be upper sample another be lower specimen; Yet, can only have a simple sample or have sample more than two.The rear surface of sample 14 is exposed in the atmosphere of machine exterior.Air outside is heated and blows to the inside of chamber 12, with the temperature in the conditioning chamber 12.Be fed in the chamber 12 with the water in the moisture cassette for supplying 16 heating and evaporation and with moisture by conventional method.
In above-mentioned detection machine, a kind of embodiment of this machine operation is included under 60 ℃ the temperature to 16 hours irradiation light of sample 14 supplies, closes lamp 10 then, and the inside of chamber 12 remains under 50 ℃ the temperature and produces 8 hours moisture.These two steps, a circulation that has constituted aging detecting operation is constantly repeated.When lamp was closed, the humidity in the chamber 12 was higher, and the rear surface of sample is exposed in the extraneous air under the lower temperature.Thereby because condensation, got wet in the surface of sample.Therefore, repeat the sample of getting wet, apply the ultraviolet ray irradiation and dry this several steps, quickened the aging of sample.Be to be understood that top description is the circulation of the operable type of machine of this kind.
Yet, in the device shown in Fig. 1, exist problem.At first, do not respond to the equipment of the output of fluorescent light 10, with degradation rate or the control radiation output of following the tracks of them.In above-mentioned equipment, a kind of program of standard attempts to provide the even output of these lamps, and it is the position that rotates these lamps at interval with preset time according to predetermined order.Do not provide and detect these lamps, detect actual output; On the contrary, suppose, and consider this hypothesis and arrange rotation order about possible output.
The equipment of another shortcoming of such equipment in beginning and operating process, these lamps not being regulated.Thereby, the life-span of having damaged these lamps, and deviation has taken place in the degree of accuracy of any detection.And the radiancy that can not calibrate these lamps.
In order to overcome the above-mentioned shortcoming of the conventional sense device shown in Fig. 1, various trials have been carried out.The device that in these are attempted, has a kind of Atlas electronic equipment company to produce, name is called AtlasCi35 FADE-OMETER ; The name that a kind of Heraeus produces is called the device of XENOTEST 1200 CPS; The U.S. Patent number of the Suga that authorizes on October 1st, 1985: 4544995; The people's such as Kockott that authorize on April 27th, 1971 U.S. Patent number: 4544995; And the people's such as Fedor that authorize on April 27th, 1993 U.S. Patent number: 5206518.
The equipment of Atlas and xenon arc lamp use together, and it comprises the main light control system of a closing coil irradiation monitor as it.This monitor uses light pipe, interference filter and the photodiode that is inserted into solid state electronic devices, keeps predetermined irradiance, and amounts to the energy of sample reception by a kind of integrator.The manual irradiation controller that this equipment uses when also being equipped with this system of periodic calibration.
The device that Heraeus produces also uses with the xenon arc lamp.This equipment uses three photo-detectors to survey the output of three independent xenon arc lamps.
The conventional equipment that constitutes the element of above-mentioned these two equipment comprises discharge lamp, and they can be xenon lamp type and vertical the placement.Around discharge lamp, provide filtrator to pass through with the light that only allows required wavelength.The output of the discharge lamp of sensor to respond to vertical placement is provided, and places a rotary sample bracing frame with around discharge lamp.Provide each detector to survey the irradiation that discharge lamp separately produces in time.The rotation of rotary sample bracing frame is arranged in the sample of sample support frame.Provide the output of sensor, and the rotary sample bracing frame is attempted to provide average all irradiation of equal amounts for each sample with the tracking discharge lamp.Use inwall that the outside guiding of the light of discharge lamp is reflexed on the sample.
Another equipment uses the uviol lamp similar to Fig. 1 at fit on, and it comprises single-sensor.Yet, in such device, need before these lamps are placed on this equipment, mate the feature of these lamps.Because sensor is only responded to the lamp of the most close its position, this needs.Therefore, sensor will suppose that the lamp away from it is the same work with the lamp of its actual sensed.
The Suga patent is attempted to be adjusted to asymmetric geometry by the arrangement row with the discharge lamp 10 of Fig. 1 and is improved the prior art equipment shown in Fig. 1.Discharge lamp 10 is not directly to place downwards successively.On the contrary, they are arranged in a kind of special position.This attempts to realize providing more uniform irradiation profile to sample 14 in Suga.
People's such as Kockott patent is at a kind of equipment that uses the irradiation bomb that prolongs in cylindric carrier surface inside.People such as Kockott disclose three kinds of even distributions that method is come sampling irradiation.The first, lay mirror to reflect available light; The second, designing a kind of light source increases light intensity with the end at it; The 3rd, the radiation of using calibration wheel disc inhibition light source to send is dispersed.
People's such as Fedor patent structurally illustrates and the similar device of describing to Fig. 1 at a kind of, and it has improved smooth o controller and beam distribution in sensing chamber.People such as Fedor disclose a kind of device, comprise frame with sensing chamber and the sample support wall that is positioned at this chamber interior.Light source is provided in the sensing chamber.A kind of ballast device is connected to and is used to control the power that light source receives from power supply on the light source.A kind of controller is connected on the ballast device, to produce a kind of ballast control signal and to control the operation of ballast device according to required setting point value.The light source detector is placed in the sample support wall surveying the irradiance in the sensing chamber, so the light source detection device can produce a kind of irradiance signal, and this signal is imported in the controller then.This controller uses the irradiance signal to adjust ballast control signal to keep the setting point value that has selected.Calibrator unit comprises and is inserted into a kind of with reference to detector of adjacent light source detector in the sample support wall that it is designed to survey the irradiance in the sensing chamber and produces a kind of with reference to the irradiance signal.Be transferred on the calibration meter with reference to the irradiance signal, this calibration meter produces a kind of calibrating signal.Calibrating signal is transferred to and is used to calibrate this device on the controller.
The Fedor device also comprises a kind of baffle wall that is arranged in sensing chamber.Baffle wall is configured to stop selectively and shift the light beam that array of source produces.The prevention of light beam and transfer occur in and a kind ofly are selected as increasing light beam in the pattern of the mean allocation of sample support wall.
The device of Fedor also comprises a plurality of self-adjusting control channels of operating simultaneously, is used to control the output of each independent light source.These passages are controlled the output of one of them light source at least.
Although above-mentioned referenced patent provides some improvement of conventional equipment discussed above, still there is defective.
Pay special attention to the equipment of Atlas and Heraeus, notice that they have all used the rotary sample holder device.Based on this support of very basic reason is essential.Atlas equipment comprises a kind of surveillance, and it monitors that whole outputs of xenon arc lamp are to attempt to keep total system predetermined total irradiation output degree in time.The equipment of Heraeus uses three sensors to control three different lamps outputs in time.These sensor devices are used to produce a kind of constant irradiance that keeps in time.Yet any induction installation that all do not use of these equipment makes irradiation keep constant on whole space.
These two kinds of equipment all use runing rest to attempt to obtain the homogeneity in space.Therefore, being placed in the runing rest sample and obtaining spatially uniform around these lamps rotations by making, therefore is different irradiance average at each the some place on the sample plane circumference by the effect of light strength of each sample reception.Although runing rest has increased homogeneity, it has also increased the complicacy of equipment, because it needs a kind of motor and relevant rotating machinery device.
Therefore, even these equipment have the irradiation sensing capability, they only these abilities be used in temporal consistent export rather than the space on.Because the geometric configuration of equipment, there is different irradiation at each the some place on the sample plane circumference.Therefore, be positioned at the discharge lamp region in front and will have bigger irradiation zone, and will receive lower irradiation apart from discharge lamp sample far away.The rotation of support attempts to produce the ensemble average homogeneity of the irradiation that is radiated on the sample.
Use the known ultraviolet system of single-sensor to have to need this shortcoming of these lamps that coupling just using in system.This just need test these lamps in large quantities before using.Another shortcoming is in such system, when distance sensor lamp far away burns out or degenerates, can not sense reducing of its output.Have only in fact nearest lamp energy sensed, and suppose that remaining lamp plays a role in a similar manner, this situation is correct.
The patent of Suga attempts to increase the uniformity of light that shine sample on away from sample to increase the homogeneity that shines the light on the sample from top to bottom by moving two center lamps.A kind of like this shortcoming of device is for can not easily improving any improvement of existing aging equipment to obtain to obtain from the Suga device.
The shortcoming of people's such as Kockott patent is that it is at a kind of single lamp system.Another shortcoming of people's such as Kockott patent has increased the complicacy and the cost of device for it.
Another shortcoming relevant with the conventional sense device of above-mentioned discussion is their calibration.These equipment need operator's manual operation, and this just means that the operator need make the most critical decision of suitable calibration conversely.Manually readjust simultaneously device because the operator is responsible for making decision, therefore the precision of calibration will depend on operator's technology.In addition, because calibration by manually finishing, therefore takes place the stop time of prolongation in such calibration, and exist because operator's error causes this possibility of a large amount of errors.
The patent of Fedor attempts to implement automatically the control and the calibration procedure of pick-up unit.Control monitors simultaneously and is placed on a plurality of sensors in the sample support wall and controls each independent passage individually.In order to calibrate independent sensor, the operator opens the place that is close to independent sensor in door and the sample support wall in sensing chamber reference sensor is installed.Unfortunately calibration procedure has been introduced a large amount of operate misss.The operator must select the type of lamp and the zone of each calibrating position with picking.Thereby the shortcoming of this calibration procedure is the operator must be walked around security system and further error is incorporated in the reference sensor reading.In addition, the operator is exposed in harmful ultraviolet radiation.
Fedor also attempts to come beam distribution in the control detection chamber by place baffle wall between the array of lamp.A kind of like this shortcoming of device is that independent sensor and reference sensor is installed in the sample support wall.On these positions, sensor is exposed in all aging actions of test sample experience.Therefore, when sensor is used in this device, they will be degenerated, thereby error is incorporated in the detection.Another shortcoming is the ballast resistor that is used to control the power of these lamps.It is the application of conventional ballast resistor that Fedor discloses, and wherein signal is imported in the ballast resistor to increase or to reduce the power of ballast resistor.
An also shortcoming of Fedor device is for using concurrency control algorithm, and it has caused sensor reading devious.As a result, the irradiance value that measures is coarse.Therefore, control system have mistake partially and testing result can not be considered to accurate.
Summary of the invention
Therefore, need a kind of improved device for fast detecting aged sample, it has improved sensing station, agonic sensor reading, improved control and calibration steps and improved ballast resistor structure and operation.
The present invention who submits to has designed a kind of novel and improved device for fast detecting aged sample, and it has solved above-mentioned all problems and other problems and maneuverable reliable detection structure is provided.
The invention provides a kind of device for fast detecting aged sample, comprising: shell, have at least one door, be used for entering the sensing chamber that is limited to this shell; The sample erecting device is arranged in and is used to support specimen holder in the sensing chamber; Light source is arranged in and is used in the sensing chamber producing light in sensing chamber; Power supply is used for to light source power supply; Detection module removably is arranged in the container that is limited at least one, is used for surveying the irradiation of the sensing chamber that is produced by light source and produces the irradiation signal of the irradiation that an expression detects; Ballast resistor is connected to and is used to control the quantity of power that light source receives from power supply on the light source; Controller is connected on detection module and the ballast resistor, and by the operation of transmission ballast control signal control ballast resistor, thereby the controller response is adjusted ballast control signal from the irradiation signal that detection module receives, to keep irradiation required in the sensing chamber; And calibration module, be used for surveying the irradiation of sensing chamber, to produce and to show a reference point, the irradiation that this value representative detects, thereby calibration module replaces the detection module in the container interchangeably, to survey the irradiation in the sensing chamber and show reference point on calibration module, this value is imported into and is used to adjust ballast control signal on the controller.
According to the embodiment of said apparatus of the present invention, wherein light source comprises a plurality of lamps.
Embodiment according to said apparatus of the present invention, wherein container is formed at least one door, make a depression appear on this at least one the inside surface, when therefore at least one was in the closed position when this, each can removably be arranged in detection module and calibration module in the container interchangeably.
According to the embodiment of said apparatus of the present invention, wherein light source is to select from the one group of lamp that produces ultraviolet light in UV-A (400nm-320nm), UV-B (320nm-290nm) and UV-C (290nm-100nm) scope.
According to the embodiment of said apparatus of the present invention, wherein calibration module comprises at least two internal calibration programs, and they are at least two dissimilar ultraviolet lights of calibration when using identical calibration module.
Embodiment according to said apparatus of the present invention, wherein detection module also comprises a kind of plug, and it is connected with jack interface in being arranged in container, to connect controller and detection module, make that controller is connected on the detection module automatically when detection module is disposed in the container.
According to the embodiment of said apparatus of the present invention, wherein detection module comprises the detecting sensor of at least one optical photoconductor diode type.
According to the embodiment of said apparatus of the present invention, wherein calibration module comprises the reference sensor of an optical photoconductor diode type.
According to the embodiment of said apparatus of the present invention, wherein this acquisition sensor has the linear gradient of response in ultraviolet ray range.
According to the embodiment of said apparatus of the present invention, its middle controller comprises the storer of a kind of processing unit and stored program instruction, and when processed unit read, this instruction caused the following effect of controller performance: receive the set point input of required irradiation signal; And controller begins trace routine, may further comprise the steps: according to this set point, ballast control signal is outputed on the ballast resistor; Reception is from the irradiation signal input of detection module; Adjust ballast control signal according to the gain between set point and the irradiation signal; Export adjusted ballast control signal; And in required time cycle duplicate detection program step.
Embodiment according to said apparatus of the present invention, also comprise the temperature sensor that is connected on the controller, be used for monitoring the temperature of sensing chamber, produce temperature signal, and this temperature signal is transferred to adjusts heater control signal on the controller, to keep temperature required in the sensing chamber.
Embodiment according to said apparatus of the present invention, also comprise the temperature sensor that is connected on the controller, be used for monitoring sensing chamber's temperature, produce temperature signal, and this temperature signal is transferred to adjusts ballast control signal on the controller, to keep the required irradiance in the sensing chamber.
According to the embodiment of said apparatus of the present invention, wherein detection module amplifies and filters the irradiation signal to reduce frequency noise.
According to the embodiment of said apparatus of the present invention, wherein convert high impedance signal to Low ESR signal and realize reducing of frequency noise with gain by detection module.
The present invention also provides a kind of device for fast detecting aged sample, comprising: shell, have door, and be used for entering the sensing chamber that is limited to shell; The sample erecting device is arranged in and is used to support specimen holder in the sensing chamber; One group of array of source is arranged in the sensing chamber, is used for producing light in sensing chamber; Power supply is used for powering to array of source; A plurality of automatic and adjustable are put in order control channel, be used for the output of stepless control array of source, each control channel is controlled the output of at least one light source, a plurality of control channels comprise a plurality of detection modules, and they removably are arranged in the container that is limited in the door and are configured to be used for survey the different spaces zone of sample erecting device.
According to the embodiment of said apparatus of the present invention, wherein each control channel also comprises: ballast resistor, be connected at least one light source, and be used to control the quantity of power that at least one light source receives from power supply; Controller is connected on detection module and the ballast resistor, is used to produce the ballast control signal of a control ballast operation; Detecting sensor, be included in each of a plurality of detection modules, this detecting sensor is inserted in the opening that is formed in the container in the place corresponding at least one light source, surveying the irradiation in the sensing chamber that produces by at least one light source, and be used to produce the irradiation signal of the detected irradiation of representative; Transmission equipment is arranged in the detection module, is connected on detecting sensor and the controller, is used to transmit the irradiation signal to controller, makes controller can adjust ballast control signal to keep the irradiation signal on required set point.
According to the embodiment of said apparatus of the present invention, wherein there are the first and second sample support walls, and first and second row's light sources are arranged, each row has four lamps.
According to the embodiment of said apparatus of the present invention, wherein a plurality of control channels comprise four detection modules that are arranged in the container, make each of four detection modules all be positioned to the irradiation of selection from two adjacent lamps.
According to the embodiment of said apparatus of the present invention, wherein each control channel can be adjusted dividually.
Embodiment according to said apparatus of the present invention, also comprise a kind of calibration module, this module comprises a reference sensor, reference point and a reference point display that is connected on the reference sensor that it is designed to survey the irradiation in the sensing chamber and produces the irradiation that a representative detects are used to show this reference point, and this value is imported on the control channel to adjust the output of array of source.
Embodiment according to said apparatus of the present invention, also comprise the temperature sensor that is connected on the controller, be used for monitoring the temperature of sensing chamber, produce temperature signal, and temperature signal is transferred to adjusts ballast control signal on the controller, to keep irradiation required in the sensing chamber.
Embodiment according to said apparatus of the present invention, also comprise the temperature sensor that is connected on the controller, be used for monitoring the temperature of sensing chamber, produce temperature signal, and temperature signal is transferred to adjusts heater control signal on the controller, to keep temperature required in the sensing chamber.
According to the embodiment of said apparatus of the present invention, wherein a plurality of detection modules amplify and filter the irradiation signal to reduce frequency noise.
According to the embodiment of said apparatus of the present invention, wherein convert high impedance signal to Low ESR signal and realize reducing of frequency noise with gain by a plurality of detection modules.
According to the embodiment of said apparatus of the present invention, its middle controller comprises the storer of a processing unit and stored program instruction, and when processed unit read, this instruction caused the following effect of controller performance: receive the set point input of required irradiation signal; And controller begins trace routine, may further comprise the steps: (a) according to set point ballast control signal is outputed on the ballast resistor; Reception is from the irradiation signal input of detection module; (b) adjust ballast control signal according to the gain between set point and the irradiation signal; (c) export adjusted ballast control signal; And (d) the duplicate detection program step to the required time cycle.
According to the embodiment of said apparatus of the present invention, its middle controller also comprises programmed instruction, and when processed unit read, this instruction caused the following effect of controller performance: for a control channel is selected in calibration; And controller begins calibration procedure, may further comprise the steps: (a) disconnect the detection module that interrelates with the control channel of selecting; (b) will comprise that the calibration module of reference sensor is connected with the control channel of selection; (c) utilize reference sensor to survey the irradiation that is present in the sensing chamber, this irradiation is to be caused by the irradiation that the light source that the control channel with selection interrelates produces, so that produce a reference point; (d) show this reference point on the display board in being included in calibration module; (e) repeat above-mentioned steps for each control channel; (f) be input in the controller with reference to value; (g) compare reference point that interrelates with each control channel and the set point that interrelates with each control channel; And (h) for each control channel adjustment gain, so that the output of the light source that calibration and each control channel interrelate.
According to the embodiment of said apparatus of the present invention, wherein calibration procedure is further comprising the steps of: (a) utilizing calibration module is to produce ultraviolet lamp group to survey in UN-A (400nm-320nm), UV-B (320nm-290nm) or UV-C (290nm-100nm) scope; And (b) automatically the lamp that detects is related on the controller.
Embodiment according to said apparatus of the present invention, wherein this ballast resistor comprises the circuit that the control light source starts, and makes low-voltage be applied on the light source to the required time cycle, with pre-thermal light source before igniting, thus minimum is reduced in the impact of light source, and prolong the serviceable life of light source.
According to the embodiment of said apparatus of the present invention, the low-voltage oblique line that wherein is applied on the light source rises, up to reaching operating voltage.
Embodiment according to said apparatus of the present invention, also comprise the temperature sensor that is connected on the controller, be used for monitoring the temperature of sensing chamber, produce temperature signal, and temperature signal is transferred to adjusts ballast control signal on the controller, to keep irradiation required in the sensing chamber.
Embodiment according to above-mentioned device of the present invention, also comprise the temperature sensor that is connected on the controller, be used for monitoring the temperature of sensing chamber, produce temperature signal, and temperature signal is transferred to adjusts heater control signal on the controller, to keep temperature required in the sensing chamber.
According to the embodiment of said apparatus of the present invention, its middle controller monitors the irradiation signal and responds this signal adjusts ballast control signal, to keep irradiation required in the sensing chamber.
According to the embodiment of said apparatus of the present invention, approximate 1.5 seconds at least wherein required time cycle.
According to the embodiment of said apparatus of the present invention, wherein low-voltage is similar in the scope that is in 2 to 5 volts.
The present invention also provides a kind of method that the sample accelerated deterioration detects in pick-up unit, this device has sensing chamber, the sample erecting device, light source by the power supply power supply of ballast resistor control, the whole control channel of a plurality of automatic and adjustable that is used for the output of stepless control light source, each passage is controlled the output of at least one light source, each passage has a detection module, this module comprises that a detecting sensor is to survey the irradiation in the sensing chamber, this method may further comprise the steps: utilize a detecting sensor to survey the irradiation that is present in the sensing chamber, producing an irradiation signal, this irradiation is to be caused by the irradiation that the light source that interrelates with control channel produces; The irradiation signal that this detecting sensor is detected is transferred on the controller in the control channel; Relatively irradiation signal and set point with definite they whether equate; Adjust ballast control signal to the ballast resistor that interrelates with control channel, make the output of adjusting light source; Thereby repeating above-mentioned steps has been adjusted up to the ballast control signal that interrelates with each control channel and has determined a circulation; Repeat above-mentioned steps to required cycle index; For a control channel is selected in calibration; Disconnect the detection module that interrelates with the control channel of selecting; The calibration module that will comprise a reference sensor is connected with the control channel of selection; Utilize this reference sensor to survey the irradiation that is present in the sensing chamber, to produce a reference point, this irradiation is to be caused by the irradiation that the light source that the control channel with selection interrelates produces; Show reference point being included on the display board of calibration module; Repeat above-mentioned disconnection, connection, detection and step display for each control channel; Be input in the controller with reference to value; Compare reference point and set up point value; Adjust the output of the light source that interrelates with calibration and each control channel once more for each control channel.
According to the embodiment of said method of the present invention, wherein each control channel also comprises a temperature sensor that is connected on the controller, is used for monitoring the temperature of sensing chamber, and this method is further comprising the steps of: produce temperature signal; Transmit this temperature signal and to controller, adjust ballast control signal, to keep irradiation required in the sensing chamber.
According to the embodiment of said method of the present invention, wherein each control channel also comprises a temperature sensor that is connected on the controller, is used for monitoring the temperature of sensing chamber, and this method is further comprising the steps of: produce temperature signal; And the transmission temperature signal to controller, adjust heater control signal, to keep temperature required in the sensing chamber.
According to the embodiment of said method of the present invention, wherein this method is further comprising the steps of: the electric current that draws that monitors ballast resistor; And adjust ballast control signal to keep irradiation required in the sensing chamber.
The invention provides a kind of method that the sample accelerated deterioration detects in pick-up unit, this device has sensing chamber, the sample erecting device, light source by the power supply power supply of ballast resistor control, the whole control channel of a plurality of automatic and adjustable that is used for the output of stepless control light source, each passage is controlled the output of at least one light source, each passage has a detection module, this module comprises that a detecting sensor is to survey the irradiation in the sensing chamber, this method may further comprise the steps: utilize the startup of the circuit control light source in the ballast resistor, this circuit applies low pressure and continue the required time cycle to light source, with heated light sources before igniting, thus the impact of light source is minimized and prolongs the serviceable life of light source; Utilize detecting sensor to survey the irradiation that is present in the sensing chamber, producing an irradiation signal, this irradiation is to be caused by the irradiation that the light source that interrelates with control channel produces; The irradiation signal that this detecting sensor is detected is transferred on the controller in the control channel; Relatively irradiation signal and set point with definite they whether equate; According to the gain of setting up between point value and the irradiation signal, adjust ballast control signal to the ballast resistor that interrelates with control channel, make the output of adjusting light source; Thereby repeating above-mentioned steps has been adjusted up to the ballast control signal that interrelates with each control channel and has determined a circulation; Repeat above-mentioned steps to required cycle index; For a control channel is selected in calibration; Disconnect the detection module that interrelates with the control channel of selecting; The calibration module that will comprise a reference sensor is connected with the control channel of selection; Survey the irradiation that is present in the sensing chamber with this reference sensor, to produce a reference point, this irradiation is to be caused by the irradiation that the light source that the control channel with selection interrelates produces; Show reference point being included on the display board of calibration module; Repeat above-mentioned disconnection, connection, detection and step display for each control channel; Be input in the controller with reference to value; Compare reference point and set up point value; Adjust the output of the light source that interrelates with calibration and each control channel once more for each control channel.
According to the embodiment of said method of the present invention, at least 1.5 seconds wherein required time cycles.
According to the embodiment of said method of the present invention, its mesolow is in 2 to 5 volts scope.
Description of drawings
In detailed description, will be often with reference to these accompanying drawings, wherein:
Fig. 1 is the conventional sense device that uses discharge lamp according to prior art;
Fig. 2 A is the part front elevation of the improved accelerated deterioration pick-up unit according to the present invention;
Fig. 2 B is the case detailed perspective view partly of the accelerated deterioration pick-up unit of Fig. 2 A;
Fig. 3 is for showing the diagram end-view of the accelerated deterioration pick-up unit of control channel feature according to the present invention;
Fig. 4 is the top view of the detection module according to the present invention;
Fig. 5 is the upward view of the detection module according to the present invention;
Fig. 6 is the top view of the calibration module according to the present invention;
Fig. 7 is the upward view of the calibration module according to the present invention;
Fig. 8 is for showing the process flow diagram of stepless control optical sensor module according to the present invention;
Fig. 9 A-H is for illustrating the process flow diagram of system controller operating user interface according to the present invention;
Figure 10 is for illustrating the process flow diagram of calibration procedure according to the present invention;
Figure 11 is the partial cross sectional view of imbody a kind of device of the present invention.
Embodiment
Fig. 2 A shows the part front elevation of a kind of improved accelerated deterioration pick-up unit 200 according to the present invention.Device 200 comprises shell 202, and it has at least one door 204, to enter the sensing chamber 206 that is limited in the shell 202.At this door 204 is discussed.Yet those of ordinary skill in the art will be appreciated that another door that is arranged in opposite location is identical with it on form and function.The case that sensing chamber 206 is placed in the shell 202 usually limits.Sample erecting device 208 (illustrating preferably in Figure 11) is disposed in and is used to support specimen holder 210 in the sensing chamber 206.Jack 205 is disposed in and is used for the interface jointing on the shell 202, to download required and to be stored in data in the device 200.Jack can be any structure that required interface feature is provided.For example, can use RS485, RS232 or any other appropriate interface.
In this embodiment, each sample erecting device 208 comprises railing at the bottom of a top rail and, and they limit the sample support wall jointly.End railing is positioned at the fulcrum of first or external position adjacent doors 204 of case.Top rail is positioned at second or interior location of the case top away from the door at close 206 centers, chamber, makes erecting device be limited at and tends on the plane of Z-axis.Specimen holder 210 is placed in light, heat and the liquid that is used for being exposed to the accelerated deterioration environment on each sample support wall.Specimen holder 210 is arranged side by side on the sample support wall in a substantially continuous manner.Thereby specimen holder is not mounted along the sample support wall and forms an opening 216, and it matches with a container case 218 that is formed in 204.Therefore, when door 204 is closed, be installed in sensor 220 in the container 218 and be exposed to and be used for accurately surveying irradiance in the light source 212.
Power supply (not shown, as to see Fig. 3) is to light source 212 power supplies.For example, as required, power supply can comprise the common retrievable 110V or the 120V of standard, single phase poaer supply or other any suitable power supplys, and such as 220V, 240V, 440V, and polyphase source.Also can provide protection external door 214 to link to each other with protecting sheathing 202 in permanent trace routine with shell 202.Control panel 216 provides the operation interface with operating system, and this will at length be discussed below.
Fig. 2 B is the detailed perspective view of case part 222 of the accelerated deterioration pick-up unit of Fig. 2 A.Case part 222 is the shell of cupboard formula, have a pair of in limiting 204 on the opposite sides of sensing chamber 206.Light source is disposed in the sensing chamber 206, and as discussed above and will be discussed in more detail below, and power supply is to light source 206 power supplies.Case part 222 also comprises inner frame and the plate of externally installing 224.
First 204 by pivotal mounting with relative with the plate 224 of side, and relative with second (not shown), second by maincenter according to the plate 224 of side.Go out as shown, only show first 204, the second identical with it on 26S Proteasome Structure and Function.Therefore, only discuss first 204 hereinafter.Door 204 provides the path that enters sensing chamber 206.The container 218 that depression is entered is formed in the door 204, usually in position intermediate, make a pit appear on the outside surface of door 204, therefore a kind of detection module is (not shown, but be discussed in more detail below) and calibration module (not shown, but be discussed in more detail below) can interchangeably, removably be arranged in (as going through below) in the container.The detection module of a pair of homeotropic alignment is (not shown, but be discussed in more detail below) removably be arranged in each container 218, be created in irradiance in the sensing chamber 206 with detection light source, and produce a kind of irradiation signal of representing detected irradiance, make detection module not constitute the severe rugged environment of sensing chamber.
Detection module (not shown, but be discussed in more detail below) comprises a kind of detecting sensor 226, and it is inserted in the opening 228 that is formed in the container 218, is in the corresponding position of light source to be created in irradiance in the sensing chamber 206 with detection light source.Arrange detection module to detect the different spaces zone of five sample erecting devices.These detecting sensors can adopt any form known in the art, for example photodiode.
The base plate of container 218 favours door 204 and is limited in the plane, and this plane parallel is in the plane that limits the sample support wall.As a result, the base plate of container 218 next-door neighbour sample support wall and the specimen holder 210 that is placed on it; Yet, not contact between container 218 and sample erecting device 208 or specimen holder 210.When door was closed, the base plate of the inclination of container 218 was positioned at sensor 226 between the contiguous lamp and equates apart from the distance of these two lamps, and is placed in the erecting device opening 216.Yet, should be noted that and can revise this configuration that the structure that makes container 218 can be accelerated the miscellaneous part of degradation detecting device as required is displaced to an end or the other end.The configuration of these lamps in the preferred coincidence detection of the shape of container 218, the degree of depth and the profile chamber.
Every pair of lamp detecting sensor 226 provides irradiance detection accurately according to the present invention.When observing from the side, container 218 shows as has the shape that is generally triangle, makes the back side 230 of container 218 be positioned to away from the pivot of door 204 and extends in the sensing chamber, front 232 distance of the pivot of container 218 adjacent doors.Detecting sensor 226 comprises a pillar or outshot and a kind of input, and they are used as light pipe the irradiation of lamp is transferred on the detection module of sensing chamber 206 outsides in the container 218 that is installed in door 204.Detecting sensor 226 also can comprise a light filter, and it allows the light of specific wavelength to pass through.Door 204 has a little handle on the top and opens and closes with help.
Fig. 3 shows the diagram and the view of accelerated deterioration pick-up unit, and this device demonstrates the feature of a plurality of automatic adjustment control channels according to the present invention, to control the output of array of source subsequently.In this embodiment, each of four independent control channels adjusted all comprises a ballast resistor 302, and their function is all identical, therefore only discusses one, and comprises 310,312,314 or 316 and controllers 308 of four detection modules.Detection module 310,312,314 and 316 each all comprise a plug 328, it is connected with socket 330 in being arranged in container 318, to connect controller 308 and detection module 310,312,314 or 316, make that controller 308 is connected on detection module 310,312,314 or 316 automatically when detection module 310,312,314 or 316 is disposed in the container 318.
Each ballast resistor 302 is connected at least one of a plurality of light sources 304, is used to control the quantity of power that light source 304 receives from power supply 306.Control channel comprises that also is connected to a detection module 310,312,314 and 316, temperature sensor 318 and 320, controller 308 on control panel 322 and the ballast resistor 302 is used to produce a ballast control signal, and it controls the operation of each ballast resistor 302.
The detecting sensor 324 that is included in each detection module 310,312,314 and 316 has the linear gradient of susceptibility in ultraviolet ray range, to survey the irradiance in the sensing chamber 326.Detection module 310,312,314 and 316 produces an irradiance signal, the irradiance that detects that representative is produced by a plurality of light sources 304, and the transmission equipment that this signal is disposed in detection module 310,312,314 or 316 is transferred on the controller 308.In this embodiment, detection module 310,312,314 or 316 amplifies and filters the irradiance signal to reduce frequency noise.Those of ordinary skill in the art will be appreciated that this can finish by any multiple mode.For example, can realize reducing of frequency noise by high impedance signal being converted to Low ESR signal or other any suitable methods with gain.The irradiance signal is transferred on the controller 308 then, makes controller 308 can adjust ballast control signal termly, so that the irradiance signal is maintained on the required set point.Controller 308 can be used as selectively or comprises that additionally software is to carry out these some or all of functions.According to the Current draw of ballast resistor, but also controlled device 308 adjustment of ballast control signal.
Ballast control signal is to be based upon by on the basis of the set point of operator input at first, and it has represented the required irradiance in the sensing chamber.In operation, controller 308 is exported a ballast control signal to ballast resistor 302 according to set point.Detection module 310,312,314 or 316 inductions are transferred on the controller 308 from the irradiation of adjacent light source and with illumination intensity signal.The irradiance signal that controller 308 receives from least one detection module 310,312,314 or 316.Then, controller 308 is adjusted each ballast control signal on the gain basis between ballast control signal and the irradiance signal.Controller 308 is exported adjusted ballast control signal then.Adjusting module 310,312,314 or 316 for the back repeats above-mentioned step in the required time cycle.In another embodiment, temperature sensor 318 is transferred to temperature signal on the controller 308.Controller 308 is adjusted each ballast control signal according to temperature signal then.
The performance of lamp depends on Several Factors, comprises temperature, electric current, voltage of environment etc.For the performance of optimization light source 304, must consider these factors.The present invention can pass through this system of gain coefficient optimization by measuring and import these variablees and consider above-mentioned factor in control system, making.As a result, the life-span of light source 304 has improved.By monitoring these variablees, can not rely on sensor and control the irradiance of light source 304, perhaps cooperate as two feedback mechanisms with sensor.This is particularly advantageous for the life-span of predicting light source 304 bulbs.
Fig. 4 is the top view of detection module 400.Detection module 400 comprises the frame 401 with main part 402, lid 404, outshot 406, indicator elment 408 and erecting device 410.Also comprise highdensity Connection Element (not shown in this Figure).Frame 401 is hollow substantially, allows installation and measuring sensor and relevant electronic equipment.Outshot 406 extends by the perforate of frame bottom.Outshot 406 is directed to light on the detecting sensor to produce an irradiance signal as light pipe known in the art from the chamber.Lid 404 is fixed in main part 402 by a plurality of threaded fasteners 412.Those of ordinary skill in the art will be appreciated that other any suitable fastening methods can use.Indicator elment 408 shows that sensor assembly is installed suitably and operated.Erecting device 410 comprises and a pair ofly is placed on basic on frame 401 each side and be the element of U-shape, so that mesh the outshot that is placed on the container floor in the mode of snapper cooperation.The printed circuit board (PCB) (not shown) is equipped with the various electronic components that are installed on this plate, is used to amplify and filters the signal that detecting sensor produces and this signal is transferred to system controller.The amplification of irradiance signal and filtration have purpose and the effect that reduces high frequency noise.This can realize by multiple mode known in the art, comprises for example high impedance signal being converted to the Low ESR signal with gain.A plurality of threaded fastener (not shown) can be used for the various parts of fastening sensor.Also can use other structure and assembly method and equipment.
Fig. 5 shows the upward view of the detection module 500 of Fig. 4.Show outshot 502 and Connection Element 504.High density connection device 504 has a plurality of pins 506 and ground(ed) shield 508.Connection Element 504 provides the interface between sensor assembly 500 and the system controller.Being used to connect the cable (not shown) at above-mentioned interface then can be firmly and be installed in a inside safely, and this just provides a kind of installation of cleaning, and it is the rugged surroundings influence in the lasting not examined chamber, also is not subjected to the influence of operator's faulty operation.
Fig. 6 shows calibration module 600, and it comprises main part 602, lid 604, installation elements 606, display board 608, outshot 610, reference sensor (not shown) and high-density connector (not shown).Irradiance in the calibration module 600 detection sensing chamber is to produce and to show reference point 614, and it represents detected irradiance.Calibration module 600 replaces the detection module in the container interchangeably.
Lid 604 is fixed in main body 602 by a plurality of securing members 611, and has opening 612, can observe display board 608 by this opening.The signal that display board 608 responses are arranged in the reference sensor in the frame produces numerical value figure 614.Numerical value figure 614 is a reference point, has represented the detected irradiance of reference sensor.The operator is input to reference to value and is used to adjust ballast control signal in the controller.Installation elements 606 is a U-shape, and is arranged on the opposite side of main body 602, and the mode that cooperates with snapper meshes the outshot that is arranged on the container floor.Installation elements on the detection module among its 26S Proteasome Structure and Function and Fig. 4 and Fig. 5 is identical.
Display board 608 has a plurality of pins, the signal that they and printed-wiring board (PWB) engagement produce with response reference sensor and related electronic device.Sensor and printed-wiring board (PWB), circuit with and on element contact, to produce the signal of the irradiance that the contiguous bulb of a representative from sensing chamber detect.Calibration module 600 comprises at least two internal calibration programs, and they allow at least two dissimilar ultraviolet lights of calibration when using identical calibration module.Calibration module 600 can also comprise internal program, and it is this group lamp calibration that produces ultraviolet light in UV-A, UV-B or UV-C scope automatically.
Fig. 7 shows the upward view of the calibration module 700 of Fig. 6, wherein shows outshot 702 and high-density connector 704.The 26S Proteasome Structure and Function of outshot 702 to comprise similar as the detection module outshot of light pipe of operating, as known in the art, with the influence of the rugged surroundings in the not examined chamber of protection reference sensor.Similarly, high-density connector 704 connects the identical high density socket that is arranged in the container as detection module.With guaranteed that calibration module 700 is positioned at the appropriate calibration position being connected of system controller, and determined the type of the ultraviolet irradiation that just is being detected, promptly determined UVA, UVB or UVC.Calibration module 700 can replace or comprise that additionally software is to carry out some and these all functions.The contrast signal that the calibrating sensors (not shown) does not have automatically to produce with reference to sensor is transported on the system controller; But this value is only outputed to observation and the artificial counting that is used for the operator on the display board.The reference sensor of any adequate types all can be used to carry out its function.For example, reference sensor can be optical photoconductor diode type or other any right sensors.The operation of calibration module and calibration procedure will be discussed hereinafter.
Fig. 8 shows the block diagram of the stepless control of four detection modules relevant with the accelerated deterioration pick-up unit.Controller 800 can be any suitable device, for example program logic controller (PLC) maybe can be used as other suitable device of the main system controller of detecting unit operation, the operation of detecting unit comprises supervision and control irradiation, controller calibration, each different aging operations that detect are with the output of stepless control light source on the whole control channel of a plurality of automatic and adjustable.Controller 800 is surveyed the difference between detection module and the calibration module automatically.
The algorithm or the sequence of control channel 801 will be discussed at a passage, and this is because remaining control channel is similar and follows identical program.Control channel comprises a pair of lamp 802,804 and comprises detection module and the transmission equipment and the ballast resistor 808 of detecting sensor 806.Adjust control channel continuously with required cycle index in a continuous manner.For example, adjust first control channel 801, controller moves to second control channel and once adjusts then, and controller moves to the 3rd control channel and once adjusts then, controller moves to the 4th control channel and once adjusts then, thereby has determined that is detected a circulation.Controller 800 begins the order adjustment once more up to required cycle index then.
In operation, the operator is input to irradiation set point 810, detected parameters 812 and temperature set point 814 in the controller 800 by user interface.User interface can be any suitable display board and data input device.For example, user interface can be touch-screen and any other suitable device.User interface shows that irradiation set point 816, detected parameters show 818, temperature set point 820 and to each irradiation (as describing in detail hereinafter) that detects on time of selecting and the specific screens in user interface of four control channels 822,824,826 among this embodiment and 828.
Controller 800 is according to detected parameters 812 beginning trace routines then.Because each other control channel functional similarity is only discussed first control channel 801 once more.Irradiation set point 810 has been set up the initial ballast control signal, and this signal is transferred on the ballast resistor 808 by slave controller 800, to set the magnitude of current that lamp 802,804 receives.
Detection module detecting sensor 806 is surveyed the irradiation from adjacent lamps on its position, produce and proportional integral derivative (PID) module of transmission irradiation signal in the controller on, make the irradiation signal to compare with the required set point 810 in being input to controller 800.Gain is the measurement of the error between the actual irradiation signal of set point 810 and detecting sensor 906 generations.On the basis of yield value, come the renewal ballast control signal of the proportional integral derivative module of self-controller to be transferred to be used on the ballast resistor 808 to adjust the irradiation output of the lamp 802,804 of pair of parallel.Controller 800 moves to next control channel to survey irradiance then, and relatively set point provides the ballast control signal of correction, and adjusts irradiance.This process is repeated in succession, makes all to keep accurate irradiation control for each control channel.
Input in addition can be provided in each control channel algorithm or the sequence.Temperature sensor 830 is installed on the black matrix panel that is arranged in the sensing chamber, the mode of installing with sample discussed above is identical, this temperature sensor response variation of temperature, produce temperature signal and temperature signal is transferred on the controller 800, be used for adjusting well heater and keep the required temperature of sensing chamber.Relatively adjusting heater control signal after irradiation signal and irradiation set point and the definite gain.PID upgrades the heater control signal of self-controller according to the temperature gain value.In a further embodiment, temperature sensor 830 can be installed on the specimen holder between the above-mentioned sample.In the embodiment that other conduct is selected, temperature signal can be transferred to and be used to adjust ballast control signal on the controller 800, to keep irradiation required in the sensing chamber.In as this embodiment that selects, adjust ballast control signal at C.T. signal and temperature set point and after determining to gain.PID upgrades the ballast control signal of self-controller according to the temperature gain value.Temperature signal and set point are exported the control that other degree is provided to irradiation.As everyone knows, along with the rising of the temperature of lamp, irradiation descends.The resistance of going back known materials in addition can be depending on their temperature.Therefore, when the set point of lamp is peak power under the low temperature, the increase that conventional prior-art devices can not compensation temperature.Yet, by using the method for said temperature compensation, lamp can blasting with the variation of compensation temperature, therefore increased the life-span of lamp.The irradiation output of ballast resistor response ballast control signal control lamp.
When detecting the sequence startup, ballast resistor uses low-down voltage to come preheating filament, and preferred 2 to 3 volts, the time is approximately 1 and 1.5 second.Next, the firing pulse that is in approximate 400 volt range is applied on the filament.This voltage is reached omnidistance by the output that oblique line step by step rises up to lamp then.Operating voltage drops to required set point then.This voltage is kept constant in cycle tests.The electric current of lamp is relatively low, is 400mA under 100 volts alternating voltage.Crest factor is less than 1.2.The situation of lamp, promptly voltage and current is to monitor that by 5 percent on the output transformer (5%) coil obtains.The ballast control signal voltage range is within 0 to 10 volt DC voltage.The output of the lamp of 10 to 2 volts of controls 10% to 100%, and the output of the lamp of 0 to 2 volt control Control of Voltage 130% to 100%.When filament resistance descended, because temperature variation, ballast resistor was kept constant electric current and is not had load under an output voltage under 70 ℃ of light temperatures.Working voltage and frequency converter also provide the deepening function.By the increase frequency, the lamp deepening, and reduce frequency, and lamp brightens, and vice versa as required.
Calibration module 832 comprises a calibration or reference sensor 834, and it is surveyed the type of lamp 836 and produces and demonstration reference point 838.Hereinafter calibration algorithm or sequence will be discussed.
Fig. 9 A-9H shows the flowchart operation of controller user interface.In Fig. 9 A, in square 900, shown master catalogue, the operator can arrive any other subroutine screen of user interface by touching suitable the navigation button of determining on the square 902 on this catalogue.The navigation button following subroutine screen of leading to: main 904, preview 906, monitor 908, irradiation calibration 910, start/stop 912, detection list 914 and edit 915.
Fig. 9 B shows the flowchart operation of detection list screen, and it allows the operator to load a tabulation that is pre-existing in of having set up in run memory or allow any test of preview.Each detection has the parameter corresponding to the different covers of just detected material and environment.Various parameters can be including, but not limited to density, cycling time, humidity and the temperature of irradiation.
In square 916, available detection list is provided in operator's hand.In definite square 918, the operator selects whether to select an existing detection.If select, the operator enters into and describes Fig. 9 E that starts/stop screen, is discussed below this startup/stop screen about this chart.If do not select, system enters into and determines square 920, and the operator determines whether to load a detection herein.If load, system enters into square 922 so, and trace routine is downloaded then startup by will coming into question about following Fig. 9 E/stop screen implementing herein.If select not load to detect definite square 920 operators of place, system enters into and determines square 924, and the operator determines whether to edit existing detection herein.If system enters into editing screen so, will this screen be discussed with respect to following Fig. 9 C.If not, system enters into and determines square 926 so, and the operator determines whether that preview detects herein.If system enters into preview screen so, will this screen be described with respect to following Fig. 9 D.If not, system turns back to square 916 so, and detection list is revealed and this program is restarted herein.
Fig. 9 C is the process flow diagram that the operation of editing screen is shown.Edit button 915, square 924 on editing screen response master catalogue display board 900 and the detection list screen, and allow the operator to form new detection or edit some detected parameters in any existing detection.For example, operator selectable is selected the type of the lamp that will be used or any segmentation parameter in testing process, such as type, water filling or condensation cycle, split time, ultraviolet irradiation set point and the temperature set point of ultraviolet light.At definite square 928 places, the detection segment that operator's selection will be edited.The ultraviolet circulation has been selected in square 930 representatives, and it allows the operator at square 932 places input irradiation intensity.Square 934 is represented the water filling condensation cycle, and it allows the operator to select water filling or condensation at definite square 936 places.Square 938 is represented the selection of time period, and it allows the operator at square 940 places input split time.Square 942 is represented the selection of irradiation set point, and it allows the operator at square 944 places input irradiation set point.The selection of square 946 representation temperature set points, it allows the user at square 948 place's input temp set points.Square 950 is represented the selection of lamp type, and it allows the user determining that square 952 places are chosen in the available lamp type number that will be used in the detection segmentation.At definite square 928 places, no matter whether the user has selected to change any parameter of square 930-952 representative, the operator can enter into and determine square 954, and operator selectable is selected storage and detected (being the collection of parameter value) herein.If do not store, system turns back to and determines square 928 so.If storage, system preserves detected parameters and turns back to the demonstration master catalogue at square 900 places so.
Fig. 9 D is the process flow diagram that preview screen is shown, and this screen response master catalogue shows preview button 906 and the detection list screen square 926 on 900, and allows any detected parameters of operator's preview.At square 956 places, system shows detection input and parameter.System enters into and determines square 958 then, and operator selectable is selected the different segmentations of detection herein.If the operator selects to show a different segmentation, system enters into and determines square 960 so, and the operator selects to show which segmentation herein, turns back to square 956 then.If the operator selects not show a different detection segmentation, system enters into and determines square 962 so, and whether the operator selects to select from existing detection list herein.If the operator selects to select from existing detection list, system enters into Fig. 9 B so, square 916.If do not select, system turns back to the demonstration master catalogue of square 900 so.
The startup of the startup on Fig. 9 E representative response master catalogue screen 900/stop the navigation button 912/the stop selection of screen.This screen allows the operator to start or stop detection.At square 964 places, system shows detection time and irradiation parameters.System enters into and determines square 966 then, and whether the operator selects start detection herein.If system enters into the main screen that will come into question below about Fig. 9 F so.If not, system enters into and determines square 968 so, and the operator determines whether to stop to detect herein.If system turns back to square 964 so.If not, system enters into and determines square 970 so, and the operator determines whether to reset detection herein.If system turns back to square 964 so.If not, system turns back to the master catalogue demonstration of square 900 so.
Fig. 9 F illustrates from master catalogue to show the process flow diagram of selecting Home button 904 900.At square 972 places, system shows all main detection information.Square 974 display device patterns.Square 976 shows the title (ultraviolet ray, water filling condensation cycle etc.) of the detection that is moving at present.Square 978 shows the operation memory segment that is moving detection at present.Square 980 shows the irradiation of this segmentation and the set point of temperature.Square 982 shows the irradiation of the segmentation that is moving at present and the actual value of temperature.Square 984 shows about moving at present the information of the situation of detection.When finishing, the master catalogue that system turns back to square 900 shows.
Fig. 9 G illustrates the process flow diagram that monitors that screen is selected, the monitoring key 908 on this screen response master catalogue screen 900.At square 986 places, system shows the irradiation set point of each control channel.At square 988 places, system shows the actual value of the irradiation of each control channel.At square 990 places, system shows the temperature set point and the actual value of each control channel.At square 992 places, system is updated.System turns back to the master catalogue demonstration of square 1000 then.
Fig. 9 H illustrates the process flow diagram that the irradiation aiming screen is selected, the irradiation calibration knob 910 on this screen response master catalogue display screen 900.This screen allows the operator to import the calibration module reference point of being write by the operator in the calibration procedure that is discussed below about Figure 10.At square 994 places, the operator is each control channel input reference point.System turns back to the master catalogue demonstration of square 900 then.
Figure 10 is the process flow diagram that calibration procedure of the present invention is shown.In this program, the detection module that is arranged in the container is removed by the primary importance from appointment, and calibration module replaces it to be arranged in the primary importance.Those skilled in the art will be appreciated that according to industrial standard calibration procedure must be carried out in per 400 hours.Yet the operator can be in any time calibration machine of detection, and perhaps controller can be programmed need show the information of request calibration according to the operator, perhaps, and when lamp does not respond above-mentioned supervisory control program according to design.
At square 1000 places, whether controller demand operating person needs to calibrate this device.If no, so controller enter the loop and during predetermined after inquiry once more.If calibration determines at square 1002 place's controllers whether a detection moves so.If operation was saved in irradiation set point, temperature set point, other detection data and the duration of detection in the storer before square 1004 place's controllers are being proceeded so really.At square 1006 places, the operator must set calibration irradiation and temperature set point.At definite square 1008 places, controller will determine whether the irradiation and the temperature value that measure equal set point and whether stable.If not, controller entered the lasting specific time cycle of loop before inquire once more at definite square 1008 places so.If, be frozen into the output of all four control channels of ballast resistor so at square 1010 place's controllers, make the output of lamp not fluctuate.
As mentioned above, the detection module in primary importance is removed and is calibrated module and replaces, and this calibration module is approved automatically by its controller for the appropriate sensor in the correct position.Type (UV-A, UV-B or UV-C) or slave controller that calibration module is also discerned uviol lamp automatically obtain information.If conflict is arranged, calibration will be confirmed as correct.Calibration module produces reference point, and 1012 operators of place must obtain this value (promptly importing with hand) at square.Then, can remove calibration module and the replacement of the work of using detection module in primary importance.Note, repeat this program for each detection module position.
After each detection module position, whether controller is ready to and can be input in the controller at the calibration data of square 1014 places inquiry reference point.If no, the operator adopts the calibration data reference point for next detection module position so.If be input in the controller with reference to data value square 1016 operators of place so.At square 1018 places, controller calculates new yield value, is used to adjust ballast control signal.At square 1020 places, whether detection of controller inquiry moves.If reset at square 1022 places so and detect irradiation and temperature set point and detection continuation.If not, controller withdraws from calibration procedure so.Preferably, controller comprises the storer of processing unit and stored program instruction, and when being read by processing unit, instruction causes the controller operation with operation detection and calibration procedure.
Figure 11 is the partial cross sectional view of imbody a kind of device of the present invention.Device 1100 comprises the case 1102 that limits sensing chamber 1104, detection module 1106, specimen holder 1108, lamp 1110, door 1112 and moisture system 1114.Sensing chamber 1104 in this embodiment has eight lamps 1110.As discussed above, these lamps can be fluorescence, xenon or other any suitable ultraviolet sources.Specimen holder 1108 is disposed on the sample erecting device 208, and this device comprises end railing 208A and top rail 208B, and is limited in the plane, and this plane is basically parallel to the plane that limits lamp therein.Lamp 1110 is positioned to apart from specimen holder 1108 segment distance, and therefore required aging effect is provided.In addition, moisture system 1114 introduces other aging effect, and this is conventional in the art.
Door 1112 has the container 1116 that is formed on wherein, is used for installation and measuring module 1106.This responsive to temperature electronic equipment at detection module removes and be placed on its outside from sensing chamber 1104 be favourable.As a result, produced unusual stable signal.Therefore, the control of irradiation is more stable, does not have signal bias.As a result, lamp is long 1110 service times, has therefore reduced cost.A less clearance 1118 is illustrated between the base plate and specimen holder 1108 of container 1116.This is for fear of any undesired and unintentional influence to trace routine or result.
The part 1020 that Figure 11 also shows detection module 1106 is outstanding from the base plate of container 1116, so that survey the irradiation of two lamps 1110 adjacent thereto.The end of sensor outshot has an input, be used for relying on the light pipe technology with transmission of ultraviolet light to the detecting sensor that is arranged in detection module.Light filter can use together with detecting sensor, and can be configured to photodiode.The present invention is particularly advantageous, and this is because input is arranged as the sample in the specimen holder 1108 basically.Therefore, sensor reading is accurately represented the irradiation that sample experiences with relevant irradiation signal.As mentioned above, detection module 1106 is removed from door independently.In addition, as mentioned above, calibration module replaces detection module, and after removing detection module, calibration module is placed on the identical position, is used to calibrate aging equipment.
The present invention is not limited to also can consider other modification and application this illustrate or the specific details of these apparatus and method of describing.Not breaking away from true spirit of the present invention and scope that this relates to, can carry out some other variations at above-mentioned device.For example, embodiments of the invention can be instead or are comprised that in addition software is to carry out these some or all of functions.Therefore, the intent of the present invention be above-mentioned theme as an illustration property rather than explained in limiting sense.
Claims (41)
1. device for fast detecting aged sample comprises:
Shell has at least one door, is used for entering the sensing chamber that is limited to this shell;
The sample erecting device is arranged in and is used to support specimen holder in the sensing chamber;
Light source is arranged in and is used in the sensing chamber producing light in sensing chamber;
Power supply is used for to light source power supply;
Detection module removably is arranged in the container that is limited at least one, is used for surveying the irradiation of the sensing chamber that is produced by light source and produces the irradiation signal of the irradiation that an expression detects;
Ballast resistor is connected to and is used to control the quantity of power that light source receives from power supply on the light source;
Controller is connected on detection module and the ballast resistor, and by the operation of transmission ballast control signal control ballast resistor, thereby the controller response is adjusted ballast control signal from the irradiation signal that detection module receives, to keep irradiation required in the sensing chamber; And
Calibration module, be used for surveying the irradiation of sensing chamber, to produce and to show a reference point, the irradiation that this value representative detects, thereby calibration module replaces the detection module in the container interchangeably, to survey the irradiation in the sensing chamber and show reference point on calibration module, this value is imported into and is used to adjust ballast control signal on the controller.
2. device according to claim 1, wherein light source comprises a plurality of lamps.
3. device according to claim 1, wherein container is formed at least one door, make a depression appear on this at least one the inside surface, when therefore at least one was in the closed position when this, each can removably be arranged in detection module and calibration module in the container interchangeably.
4. device according to claim 1, wherein light source is to select from the one group of lamp that produces ultraviolet light in UV-A (400nm-320nm), UV-B (320nm-290nm) and UV-C (290nm-100nm) scope.
5. device according to claim 1, wherein calibration module comprises at least two internal calibration programs, they are at least two dissimilar ultraviolet lights of calibration when using identical calibration module.
6. device according to claim 1, wherein detection module also comprises a kind of plug, and it is connected with jack interface in being arranged in container, to connect controller and detection module, make that controller is connected on the detection module automatically when detection module is disposed in the container.
7. device according to claim 1, wherein detection module comprises the detecting sensor of at least one optical photoconductor diode type.
8. device according to claim 1, wherein calibration module comprises the reference sensor of an optical photoconductor diode type.
9. device according to claim 7, wherein this acquisition sensor has the linear gradient of response in ultraviolet ray range.
10. device according to claim 1, its middle controller comprises the storer of a kind of processing unit and stored program instruction, when processed unit read, this instruction caused the following effect of controller performance: receive the set point input of required irradiation signal; And controller begins trace routine, may further comprise the steps: according to this set point, ballast control signal is outputed on the ballast resistor; Reception is from the irradiation signal input of detection module; Adjust ballast control signal according to the gain between set point and the irradiation signal; Export adjusted ballast control signal; And in required time cycle duplicate detection program step.
11. device according to claim 1, also comprise the temperature sensor that is connected on the controller, be used for monitoring the temperature of sensing chamber, produce temperature signal, and this temperature signal is transferred to adjusts heater control signal on the controller, to keep temperature required in the sensing chamber.
12. device according to claim 1, also comprise the temperature sensor that is connected on the controller, be used for monitoring sensing chamber's temperature, produce temperature signal, and this temperature signal is transferred to adjusts ballast control signal on the controller, to keep the required irradiance in the sensing chamber.
13. device according to claim 1, wherein detection module amplifies and filters the irradiation signal to reduce frequency noise.
14. device according to claim 13 wherein converts high impedance signal to gain Low ESR signal by detection module and realizes reducing of frequency noise.
15. a device for fast detecting aged sample comprises:
Shell has door, is used for entering the sensing chamber that is limited to shell;
The sample erecting device is arranged in and is used to support specimen holder in the sensing chamber;
One group of array of source is arranged in the sensing chamber, is used for producing light in sensing chamber;
Power supply is used for powering to array of source;
A plurality of automatic and adjustable are put in order control channel, be used for the output of stepless control array of source, each control channel is controlled the output of at least one light source, a plurality of control channels comprise a plurality of detection modules, and they removably are arranged in the container that is limited in the door and are configured to be used for survey the different spaces zone of sample erecting device.
16. device according to claim 15, wherein each control channel also comprises:
Ballast resistor is connected at least one light source, is used to control the quantity of power that at least one light source receives from power supply;
Controller is connected on detection module and the ballast resistor, is used to produce the ballast control signal of a control ballast operation;
Detecting sensor, be included in each of a plurality of detection modules, this detecting sensor is inserted in the opening that is formed in the container in the place corresponding at least one light source, surveying the irradiation in the sensing chamber that produces by at least one light source, and be used to produce the irradiation signal of the detected irradiation of representative;
Transmission equipment is arranged in the detection module, is connected on detecting sensor and the controller, is used to transmit the irradiation signal to controller, makes controller can adjust ballast control signal to keep the irradiation signal on required set point.
17. wherein there are the first and second sample support walls in device according to claim 15, and first and second row's light sources are arranged, each row has four lamps.
18. device according to claim 15, wherein a plurality of control channels comprise four detection modules that are arranged in the container, make each of four detection modules all be positioned to the irradiation of selection from two adjacent lamps.
19. device according to claim 15, wherein each control channel can be adjusted dividually.
20. device according to claim 15, also comprise a kind of calibration module, this module comprises a reference sensor, reference point and a reference point display that is connected on the reference sensor that it is designed to survey the irradiation in the sensing chamber and produces the irradiation that a representative detects are used to show this reference point, and this value is imported on the control channel to adjust the output of array of source.
21. device according to claim 16, also comprise the temperature sensor that is connected on the controller, be used for monitoring the temperature of sensing chamber, produce temperature signal, and temperature signal is transferred to adjusts ballast control signal on the controller, to keep irradiation required in the sensing chamber.
22. device according to claim 16, also comprise the temperature sensor that is connected on the controller, be used for monitoring the temperature of sensing chamber, produce temperature signal, and temperature signal is transferred to adjusts heater control signal on the controller, to keep temperature required in the sensing chamber.
23. device according to claim 15, wherein a plurality of detection modules amplify and filter the irradiation signal to reduce frequency noise.
24. device according to claim 23 wherein converts high impedance signal to gain Low ESR signal by a plurality of detection modules and realizes reducing of frequency noise.
25. device according to claim 16, its middle controller comprise the storer of a processing unit and stored program instruction, when processed unit read, this instruction caused the following effect of controller performance: receive the set point input of required irradiation signal; And controller begins trace routine, may further comprise the steps:
(a) according to set point ballast control signal is outputed on the ballast resistor; Reception is from the irradiation signal input of detection module;
(b) adjust ballast control signal according to the gain between set point and the irradiation signal;
(c) export adjusted ballast control signal; And
(d) the duplicate detection program step is to the required time cycle.
26. device according to claim 25, its middle controller also comprises programmed instruction, and when processed unit read, this instruction caused the following effect of controller performance: for a control channel is selected in calibration; And controller begins calibration procedure, may further comprise the steps:
(a) disconnect the detection module that interrelates with the control channel of selecting;
(b) will comprise that the calibration module of reference sensor is connected with the control channel of selection;
(c) utilize reference sensor to survey the irradiation that is present in the sensing chamber, this irradiation is to be caused by the irradiation that the light source that the control channel with selection interrelates produces, so that produce a reference point;
(d) show this reference point on the display board in being included in calibration module;
(e) repeat above-mentioned steps for each control channel;
(f) be input in the controller with reference to value;
(g) compare reference point that interrelates with each control channel and the set point that interrelates with each control channel; And
(h) for each control channel adjustment gain, so that the output of the light source that calibration and each control channel interrelate.
27. device according to claim 26, wherein calibration procedure is further comprising the steps of:
(a) utilizing calibration module is to produce ultraviolet lamp group to survey in UN-A (400nm-320nm), UV-B (320nm-290nm) or UV-C (290nm-100nm) scope; And
(b) automatically the lamp that detects is related on the controller.
28. device according to claim 1, wherein this ballast resistor comprises the circuit that the control light source starts, and makes low-voltage be applied on the light source to the required time cycle, with pre-thermal light source before igniting, thus minimum is reduced in the impact of light source, and prolong the serviceable life of light source.
29. device according to claim 28, the low-voltage oblique line that wherein is applied on the light source rises, up to reaching operating voltage.
30. device according to claim 28, also comprise the temperature sensor that is connected on the controller, be used for monitoring the temperature of sensing chamber, produce temperature signal, and temperature signal is transferred to adjusts ballast control signal on the controller, to keep irradiation required in the sensing chamber.
31. device according to claim 28, also comprise the temperature sensor that is connected on the controller, be used for monitoring the temperature of sensing chamber, produce temperature signal, and temperature signal is transferred to adjusts heater control signal on the controller, to keep temperature required in the sensing chamber.
32. monitoring the irradiation signal and respond this signal, device according to claim 28, its middle controller adjust ballast control signal, to keep irradiation required in the sensing chamber.
33. device according to claim 28, approximate 1.5 seconds at least wherein required time cycle.
34. device according to claim 28, wherein low-voltage is similar in the scope that is in 2 to 5 volts.
35. method that the sample accelerated deterioration detects in pick-up unit, this device has sensing chamber, the sample erecting device, light source by the power supply power supply of ballast resistor control, be used for the whole control channel of a plurality of automatic and adjustable of stepless control light source output, each passage is controlled the output of at least one light source, and each passage has a detection module, this module comprises a detecting sensor to survey the irradiation in the sensing chamber, and this method may further comprise the steps:
Utilize detecting sensor to survey the irradiation that is present in the sensing chamber, producing an irradiation signal, this irradiation is to be caused by the irradiation that the light source that interrelates with control channel produces;
The irradiation signal that this detecting sensor is detected is transferred on the controller in the control channel;
Relatively irradiation signal and set point with definite they whether equate;
Adjust ballast control signal to the ballast resistor that interrelates with control channel, make the output of adjusting light source;
Thereby repeating above-mentioned steps has been adjusted up to the ballast control signal that interrelates with each control channel and has determined a circulation;
Repeat above-mentioned steps to required cycle index;
For a control channel is selected in calibration;
Disconnect the detection module that interrelates with the control channel of selecting;
The calibration module that will comprise a reference sensor is connected with the control channel of selection;
Utilize this reference sensor to survey the irradiation that is present in the sensing chamber, to produce a reference point, this irradiation is to be caused by the irradiation that the light source that the control channel with selection interrelates produces;
Show reference point being included on the display board of calibration module;
Repeat above-mentioned disconnection, connection, detection and step display for each control channel;
Be input in the controller with reference to value;
Compare reference point and set up point value;
Adjust the output of the light source that interrelates with calibration and each control channel once more for each control channel.
36. method according to claim 35, wherein each control channel also comprises a temperature sensor that is connected on the controller, is used for monitoring the temperature of sensing chamber, and this method is further comprising the steps of: produce temperature signal; Transmit this temperature signal and to controller, adjust ballast control signal, to keep irradiation required in the sensing chamber.
37. method according to claim 35, wherein each control channel also comprises a temperature sensor that is connected on the controller, is used for monitoring the temperature of sensing chamber, and this method is further comprising the steps of: produce temperature signal; And the transmission temperature signal to controller, adjust heater control signal, to keep temperature required in the sensing chamber.
38. method according to claim 35, wherein this method is further comprising the steps of: the electric current that draws that monitors ballast resistor; And adjust ballast control signal to keep irradiation required in the sensing chamber.
39. method that the sample accelerated deterioration detects in pick-up unit, this device has sensing chamber, the sample erecting device, light source by the power supply power supply of ballast resistor control, be used for the whole control channel of a plurality of automatic and adjustable of stepless control light source output, each passage is controlled the output of at least one light source, and each passage has a detection module, this module comprises a detecting sensor to survey the irradiation in the sensing chamber, and this method may further comprise the steps:
Utilize the startup of the circuit control light source in the ballast resistor, this circuit applies low pressure and continue the required time cycle to light source, with heated light sources before igniting, thus the impact of light source is minimized and prolongs the serviceable life of light source;
Utilize detecting sensor to survey the irradiation that is present in the sensing chamber, producing an irradiation signal, this irradiation is to be caused by the irradiation that the light source that interrelates with control channel produces;
The irradiation signal that this detecting sensor is detected is transferred on the controller in the control channel;
Relatively irradiation signal and set point with definite they whether equate;
According to the gain of setting up between point value and the irradiation signal, adjust ballast control signal to the ballast resistor that interrelates with control channel, make the output of adjusting light source;
Thereby repeating above-mentioned steps has been adjusted up to the ballast control signal that interrelates with each control channel and has determined a circulation;
Repeat above-mentioned steps to required cycle index;
For a control channel is selected in calibration;
Disconnect the detection module that interrelates with the control channel of selecting;
The calibration module that will comprise a reference sensor is connected with the control channel of selection;
Survey the irradiation that is present in the sensing chamber with this reference sensor, to produce a reference point, this irradiation is to be caused by the irradiation that the light source that the control channel with selection interrelates produces;
Show reference point being included on the display board of calibration module;
Repeat above-mentioned disconnection, connection, detection and step display for each control channel;
Be input in the controller with reference to value;
Compare reference point and set up point value;
Adjust the output of the light source that interrelates with calibration and each control channel once more for each control channel.
40. according to the described method of claim 39, at least 1.5 seconds wherein required time cycles.
41. according to the described method of claim 39, its mesolow is in 2 to 5 volts scope.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28079601P | 2001-04-02 | 2001-04-02 | |
| US60/280,796 | 2001-04-02 |
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| CN1379230A CN1379230A (en) | 2002-11-13 |
| CN1259557C true CN1259557C (en) | 2006-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02108736 Expired - Fee Related CN1259557C (en) | 2001-04-02 | 2002-04-01 | Improved device for fast detecting aged sample |
Country Status (2)
| Country | Link |
|---|---|
| JP (2) | JP4148694B2 (en) |
| CN (1) | CN1259557C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10350020B3 (en) * | 2003-10-27 | 2005-05-04 | Atlas Material Testing Technology Gmbh | UV light emitting diodes as a radiation source in a device for the artificial weathering of samples |
| US7038196B2 (en) * | 2004-02-02 | 2006-05-02 | Atlas Material Testing Technology Llc | Accelerated weathering test apparatus with full spectrum calibration, monitoring and control |
| KR100751384B1 (en) | 2004-11-17 | 2007-08-22 | 아틀라스 메티어리얼 테스팅 테크놀러지 게엠베하 | Plug-in Radiation Source Module for a Weathering Apparatus |
| US8670938B2 (en) * | 2010-03-10 | 2014-03-11 | Atlas Materials Testing Technologies, Llc | Methods and apparatus for accurate service life prediction |
| CN102998244B (en) * | 2011-09-15 | 2015-06-03 | 海洋王（东莞）照明科技有限公司 | Method of accelerated life test |
| EP2846146B1 (en) * | 2013-09-06 | 2020-01-08 | Atlas Material Testing Technology GmbH | weathering test with multiple independently controllable radiation sources |
| JP2017138136A (en) * | 2016-02-02 | 2017-08-10 | ルネサスエレクトロニクス株式会社 | Life determination device and life determination method |
| JP2017218975A (en) * | 2016-06-08 | 2017-12-14 | 三菱電機株式会社 | Degradation diagnosis device |
| CN108020497A (en) * | 2016-11-01 | 2018-05-11 | 江苏秀强玻璃工艺股份有限公司 | A kind of degradation detection device and its application method based on xenon light source |
| JP6528218B1 (en) * | 2018-03-29 | 2019-06-12 | スガ試験機株式会社 | Weather resistance tester |
| CN108872054B (en) * | 2018-07-31 | 2024-02-20 | 中国人民解放军陆军装甲兵学院士官学校 | Ageing experiment device for flat xenon lamp and control method thereof |
| WO2020217284A1 (en) * | 2019-04-22 | 2020-10-29 | スガ試験機株式会社 | Weather resistance testing machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5246890A (en) * | 1975-10-13 | 1977-04-14 | Nissan Motor Co Ltd | Circuit for detecting roubles of oxygen sensors |
| US5136886A (en) * | 1990-11-06 | 1992-08-11 | Atlas Electric Devices Co. | Accelerated weathering and lightfastness testing chamber |
| US5206518A (en) * | 1991-12-02 | 1993-04-27 | Q-Panel Company | Accelerated weathering apparatus |
-
2002
- 2002-04-01 CN CN 02108736 patent/CN1259557C/en not_active Expired - Fee Related
- 2002-04-02 JP JP2002099924A patent/JP4148694B2/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2008185600A (en) | 2008-08-14 |
| JP2002310887A (en) | 2002-10-23 |
| CN1379230A (en) | 2002-11-13 |
| JP4148694B2 (en) | 2008-09-10 |
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