CN104406772A - Blue light filtering detector and detection method - Google Patents
Blue light filtering detector and detection method Download PDFInfo
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- CN104406772A CN104406772A CN201410714431.4A CN201410714431A CN104406772A CN 104406772 A CN104406772 A CN 104406772A CN 201410714431 A CN201410714431 A CN 201410714431A CN 104406772 A CN104406772 A CN 104406772A
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Abstract
The invention relates to a testing device for a lens, in particular to a blue light filtering detector and a detection method for analyzing and testing the filtering capability of blue light. The blue light filtering detector structurally comprises a main body control area and a signal acquisition area, wherein the bottom of the main body control area and the bottom of the signal acquisition area are arranged on an intermediate connecting body; a bracket is arranged on the upper surface of the middle of the intermediate connecting body; two groups of light source generators, photoelectric signal receiving circuits, photoelectric signal processing circuits, control units and digital display circuits and one group of power supply circuit are arranged in the main body control area; the two groups of light source generators are arranged on the inner side of the main body control area; two groups of photodiodes are arranged in the signal acquisition area and are specifically arranged on the inner side of the signal acquisition area. The blue light filtering detector disclosed by the invention has the advantages that the bracket can be detached, the calibration is avoided; a double power supply mode is adopted; the size is small; a 9V battery is used for providing power; the detector can be normally used under the condition that no external power supply is used for providing power and has the characteristics of portability.
Description
Technical field
The present invention relates to a kind of proving installation of eyeglass, particularly relate to a kind of blue light to analysis and test that blue light leaches ability and leach detector and detection method.
Background technology
Blue light is that wavelength is between 400nm-500nm and has relatively high-octane ray, and the blue light in this wavelength can make the macular area toxin in eyes increase, and our eyeground of serious threat is healthy.According to research display, blue light is present in computer monitor, mobile phone, digital product display screen, LED light line in a large number, or even in sunshine.
Blue light has stronger energy, can penetrate crystalline lens and to go directly retina, causes serious harm to our eyeground and macula retinae district.Very likely cause postcataract damage of fundus, cause or increase the weight of the disease in macula retinae district, even causing that situation is serious is blind.In 4.2 hundred million netizens of the whole nation, the netizen of 65.3% is had to have visual impairment, cataract, the eye illness in various degree such as blind because of blue light, radiation.Hispanic researchist finds, and only filters compared with ultraviolet artificial lens, and the artificial lens that can filter blue light can provide better visual contrast sensitivity for diabetic, and can improve colour vision.Along with the number of illness in eye, being on the increase of netizen and office work number, buys the people that blue light leaches mirror and gets more and more.
At present, blue light is medically used to leach eyeglass as ophthalmic medical aid.In order to verify function and the performance of this type of eyeglass, needing a kind of blue light to leach detector, leaching the efficiency of blue light for quantitative and qualitative analysis.
In addition, eyeglass development & production unit and eyeglass sales network also have demand to this instrument.Only Chinese glasses manufacturing enterprise is just more than 4000, has the optometry of certain scale to join Jing Dian more than 20,000.
Building curtain wall, glass of building and automotive front baffle aerofoil also need use filter blue light pad pasting.By the end of the year 2013, China's automobile guarantee-quantity will reach 1.37 hundred million.Estimated before 2017, automobile industry maintains the growth ratio of 15% every year.The current annual value of production of China's curtain wall industry nearly 1,50000000000, defined scale above enterprise number and reached 367, the industry middle-of-the-road forces that the leading enterprise crossing hundred million yuan with more than 50 output values is representative, the industrial outpuut that this batch of large-scale leading enterprise completes accounts for about 50% of whole industry gross industrial output value.Above-mentioned industry all needs to use glass and the glass film supporting with glass.So need the detection to this pad pasting and demonstration.
A instrument is needed to carry out the effect of Fast Measurement filter blue light equally in above-mentioned industry test and measuring unit.
And spectroscope in the market and blue light tester, adopt shape external structure or inner structure complicated, similar instrument often needs calibration before use, cannot widespread adoption.
Summary of the invention
The present invention is to provide a kind of blue light leach detector and detection method to solve the problems of the technologies described above, object be make the cost of product low, respond fast, highly sensitive, show in real time, operability is high.
Detector is leached for reaching above-mentioned purpose blue light of the present invention, by following Structure composing: main body control area and signals collecting district, the bottom in main body control area and signals collecting district is located on intermediate connector, prop up the upper surface be erected in the middle part of intermediate connector, two groups of light source generators are provided with in main body control area, photo-electric signal receiving circuit, photoelectric signal processing circuit, control module and digital-scroll technique circuit, one group of power circuit, two groups of light source generators are located at the inner side of main body control area, two groups of photodiodes are located in signals collecting district, two groups of photodiodes are located at the inner side in signals collecting district.
Light source generator sends blue light.
Photo-electric signal receiving circuit is by following Structure composing: the analogue selector divider of two 4 passages, model is HCF4052B, the PIN1 contact resistance R33 of analogue selector divider, PIN2 contact resistance R4, PIN3 connection outputs to photoelectric signal processing circuit PIN7, PIN4 contact resistance R19, PIN5 contact resistance R20, PIN6 connects digitally, PIN7 connecting analog ground, PIN8 connects digitally, PIN9 and PIN10 is connected to control module, PIN11, PIN12, PIN13, PIN14 with PIN15 is connected digitally, PIN16 connection+5V, resistance R4 is connected with semifixed resistor VR1, resistance R19 is connected with semifixed resistor VR2, resistance R20 is connected with semifixed resistor VR3, resistance R33, semifixed resistor VR1, semifixed resistor VR2 is connected with one end of photodiode with semifixed resistor VR3, the other end ground connection of photodiode.
Photoelectric signal processing circuit is by following Structure composing: transport and placing device, model is TLC2272, transport and placing device PIN1 connects one end of electric capacity C9 and semifixed resistor VR4, the semifixed resistor VR4 other end is connected with resistance R8 one end, the resistance R8 other end is connected with the other end of electric capacity C9 and one end of resistance R2, the other end of resistance R2 is connected with PIN7, resistance R10 is in parallel with resistance R2, PIN2 contact resistance R14 one end, the other end of resistance R14 is connected with the other end of electric capacity C9, PIN3 with PIN5 is connected digitally, PIN4 connecting analog ground, electric capacity C12 is provided with between PIN6 and PIN7, PIN6 and digitally between be provided with electric capacity C8, PIN6 connects photodiode, resistance R5 one end is connected with PIN1, the resistance R5 other end is connected with the PIN8 of control module, electric capacity C15 one end connects digitally, the electric capacity C15 other end is connected with the resistance R5 other end, PIN8 connection+5V, C14 one end connects PIN8, another termination of C14 in analog.
Control module is by following Structure composing: 8-bit microcontroller, crystal oscillator external circuits, reset circuit and bypass, isolation circuit is formed, single-chip microcomputer model is HT46R52A, PIN1 connects HCF4052B PIN10, PIN2 connects HCF4052B PIN9, PIN6 is connected to+5V, electric capacity C18 one end is connected to PIN6, the C18 other end connects digitally, PIN7 connects digitally, PIN8 contact resistance R5 and electric capacity C15, PIN11 contact resistance R1 and resistance R12, one end of PIN13 contact resistance R11 and electric capacity C7, another termination+5V of resistance R11, another termination of electric capacity C7 digitally, PIN14 connection+5V, PIN15 connects one end of electric capacity C13 and resistance R3, another termination+5V of electric capacity C13, another termination of resistance R3 digitally, C16 one end connects PIN14, the other end is connected to digitally.
Digital-scroll technique circuit is made up of LCD and LCD driving circuit, LCD driving circuit is made up of driving chip HT1621B and hummer, wherein driving chip HT1621B and control module communication Received signal strength, LCD PIN1 connects HT1621B PIN46, LCD PIN2 connects HT1621B PIN47, LCD PIN3 connects HT1621B PIN48, LCD PIN4 connects HT1621B PIN1, LCD PIN5 connects HT1621B PIN2, LCD PIN6 connects HT1621B PIN3, LCD PIN7 connects HT1621B PIN4, LCD PIN8 connects HT1621B PIN5, LCD PIN9 connects HT1621B PIN6, LCD PIN10 connects HT1621B PIN7, LCD PIN11 connects HT1621B PIN8, LCD PIN12 connects HT1621B PIN24, LCD PIN13 connects HT1621B PIN23, LCD PIN14 connects HT1621B PIN22, LCD PIN15 connects HT1621B PIN21, HT1621B PIN9 connects single-chip microcomputer PIN3, HT1621B PIN11 connects single-chip microcomputer PIN4, HT1621B PIN12 connects single-chip microcomputer PIN5, HT1621B PIN13 connects digitally, one end of HT1621B PIN16 contact resistance R23 and resistance R24, another termination+5V of resistance R23, another termination of resistance R24 digitally, the other end of HT1621B PIN17 contact resistance R23 and+5V, HT1621B PIN19 connects hummer, HT1621B PIN20 contact resistance R22, the resistance R22 other end connects hummer.
Power circuit is made up of 2.5V voltage generation circuit and 5V voltage generation circuit, 2.5V voltage generation circuit adopts TL431 chip, utilize cell voltage to change a 2.5V reference voltage, and make to be digitally this voltage, the sampling for photosignal electric current provides wide lower limit; 5V voltage generation circuit adopts MD5350 chip, and utilize+9V voltage and digitally change out the digital voltage+5V of power supply, TL431 PIN1 connection digitally; TL431 PIN2 connecting analog ground; TL431 PIN3 connects digitally; MD5350 PIN1 connects digitally; MD5350 PIN2 connects S8550 collector; MD5350 PIN3 connection+5V; Electric capacity C11 connects MD5350 PIN1 and PIN2; S8550 emitter connection+9V; Resistance R18 connects S8550 collector and digitally; Resistance R9 one end connects MD5350 base stage, and the other end of resistance R9 is connected with diode cathode, and diode cathode connects digitally; Resistance R13 connects MD5350 base stage and emitter; Resistance R12 one end is connected with S8550 collector, and the resistance R12 other end is connected with resistance R1 one end and single-chip microcomputer PIN11, and the resistance R1 other end connects digitally.
Support comprises one or more in nose frame, workprint frame and crystal frame, is provided with lightshade cover outside photodiode receiving cable.
Blue light leaches the detection method of detector, photodiode receives blue light signals, this signal is by after photo-electric signal receiving circuit, carry out amplifying and delivering to control module through photoelectric signal processing circuit again, the analog input signal collected is converted to digital signal by control module, if the numerical value of digital signal is close to reaching 0-2
12during two edges of scope, control module exports the signal reselecting passage to photo-electric signal receiving circuit, photosignal enters photo-electric signal receiving circuit by another selection circuit, finally makes the numerical value of the digital signal in control module at 0-2
12in scope, at this moment control module output bus signal is to digital-scroll technique circuit, and LCD shows the blue light brightness value received by photodiode finally recorded.
After photosignal delivers to analogue selector divider by four selection circuit Zhong mono-tunnels, road, deliver to control module after being amplified by transport and placing device, the order that four road selection circuits are selected is followed successively by resistance R33 selection circuit, resistance R4 selection circuit, resistance R19 selection circuit and resistance R20 selection circuit; The corresponding blue light brightness of resistance R33 selection circuit is at the photosignal of below 2000Lx, the photosignal of blue light brightness between 2000-20000Lx that resistance R4 selection circuit is corresponding, the photosignal of blue light brightness between 20000-50000Lx that resistance R19 selection circuit is corresponding, the corresponding blue light brightness of resistance R20 selection circuit is at the photosignal of more than 50000Lx.
Advantageous effect of the present invention: support detachably, does not need calibration, duplicate supply pattern, volume lightly, uses 9V powered battery.This instrument when powering without external power supply, normally can be used.There is portable feature.
Accompanying drawing explanation
Fig. 1 is circuit structure block diagram of the present invention.
Fig. 2 is agent structure schematic diagram of the present invention.
Fig. 3 is photo-electric signal receiving circuit schematic diagram of the present invention.
Fig. 4 is photoelectric signal processing circuit schematic diagram of the present invention.
Fig. 5 is control module schematic diagram of the present invention.
Fig. 6 is digital-scroll technique circuit theory diagrams of the present invention.
Fig. 7 is power circuit principle figure of the present invention.
In figure: 1, main body control area; 2, signals collecting district; 3, intermediate connector; 4, support; 5, light source generator; 6, photo-electric signal receiving circuit; 7, photoelectric signal processing circuit; 8, control module; 9, digital-scroll technique circuit; 10, power circuit; 11, photodiode; 12, lightshade cover.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Blue light of the present invention leaches detector as illustrated in fig. 1 and 2, by following Structure composing: main body control area 1 and signals collecting district 2, the bottom in main body control area 1 and signals collecting district 2 is located on intermediate connector 3, support 4 is located at the upper surface in the middle part of intermediate connector 3, two groups of light source generators 5 are provided with in main body control area 1, photo-electric signal receiving circuit 6, photoelectric signal processing circuit 7, control module 8 and digital-scroll technique circuit 9, one group of power circuit 10, two groups of light source generators 5 are located at the inner side of main body control area 1, two groups of photodiodes 11 are located in signals collecting district 2, two groups of photodiodes 11 are located at the inner side in signals collecting district 2.
Light source generator 5 sends blue light.
Photo-electric signal receiving circuit 6 is by following Structure composing as shown in Figure 3: the analogue selector divider of two 4 passages, model is HCF4052B, the PIN1 contact resistance R33 of analogue selector divider, PIN2 contact resistance R4, PIN3 connection outputs to photoelectric signal processing circuit PIN7, PIN4 contact resistance R19, PIN5 contact resistance R20, PIN6 connects digitally, PIN7 connecting analog ground, PIN8 connects digitally, PIN9 and PIN10 is connected to control module, PIN11, PIN12, PIN13, PIN14 with PIN15 is connected digitally, PIN16 connection+5V, resistance R4 is connected with semifixed resistor VR1, resistance R19 is connected with semifixed resistor VR2, resistance R20 is connected with semifixed resistor VR3, resistance R33, semifixed resistor VR1, semifixed resistor VR2 is connected with one end of photodiode with semifixed resistor VR3, the other end ground connection of photodiode.
Photoelectric signal processing circuit 7 is by following Structure composing as shown in Figure 4: transport and placing device, model is TLC2272, transport and placing device PIN1 connects one end of electric capacity C9 and semifixed resistor VR4, the semifixed resistor VR4 other end is connected with resistance R8 one end, the resistance R8 other end is connected with the other end of electric capacity C9 and one end of resistance R2, the other end of resistance R2 is connected with PIN7, resistance R10 is in parallel with resistance R2, PIN2 contact resistance R14 one end, the other end of resistance R14 is connected with the other end of electric capacity C9, PIN3 with PIN5 is connected digitally, PIN4 connecting analog ground, electric capacity C12 is provided with between PIN6 and PIN7, PIN6 and digitally between be provided with electric capacity C8, PIN6 connects photodiode, resistance R5 one end is connected with PIN1, the resistance R5 other end is connected with the PIN8 of control module, electric capacity C15 one end connects digitally, the electric capacity C15 other end is connected with the resistance R5 other end, PIN8 connection+5V, C14 one end connects PIN8, another termination of C14 in analog, electric capacity C8 connects in-phase end and backward end, for phase compensation.Feedback capacity C9 and C12 for offsetting input capacitance and issuable self-sustained oscillation, and determines the time constant of current-voltage conversion circuit together with feedback resistance, improves step response speed.
Control module 8 is by following Structure composing as shown in Figure 5: 8-bit microcontroller, crystal oscillator external circuits, reset circuit and bypass, isolation circuit is formed, single-chip microcomputer model is HT46R52A, PIN1 connects HCF4052B PIN10, PIN2 connects HCF4052B PIN9, PIN6 is connected to+5V, electric capacity C18 one end is connected to PIN6, the C18 other end connects digitally, PIN7 connects digitally, PIN8 contact resistance R5 and electric capacity C15, PIN11 contact resistance R1 and resistance R12, one end of PIN13 contact resistance R11 and electric capacity C7, another termination+5V of resistance R11, another termination of electric capacity C7 digitally, PIN14 connection+5V, PIN15 connects one end of electric capacity C13 and resistance R3, another termination+5V of electric capacity C13, another termination of resistance R3 digitally, C16 one end connects PIN14, the other end is connected to digitally.
Digital-scroll technique circuit 9 is made up of LCD and LCD driving circuit as shown in Figure 6, LCD driving circuit is made up of driving chip HT1621B and hummer, wherein driving chip HT1621B and control module communication Received signal strength, LCD PIN1 connects HT1621B PIN46, LCD PIN2 connects HT1621B PIN47, LCD PIN3 connects HT1621B PIN48, LCD PIN4 connects HT1621B PIN1, LCD PIN5 connects HT1621B PIN2, LCD PIN6 connects HT1621B PIN3, LCD PIN7 connects HT1621B PIN4, LCD PIN8 connects HT1621B PIN5, LCD PIN9 connects HT1621B PIN6, LCD PIN10 connects HT1621B PIN7, LCD PIN11 connects HT1621B PIN8, LCD PIN12 connects HT1621B PIN24, LCD PIN13 connects HT1621B PIN23, LCD PIN14 connects HT1621B PIN22, LCD PIN15 connects HT1621B PIN21, HT1621B PIN9 connects single-chip microcomputer PIN3, HT1621B PIN11 connects single-chip microcomputer PIN4, HT1621B PIN12 connects single-chip microcomputer PIN5, HT1621B PIN13 connects digitally, one end of HT1621B PIN16 contact resistance R23 and resistance R24, another termination+5V of resistance R23, another termination of resistance R24 digitally, the other end of HT1621B PIN17 contact resistance R23 and+5V, HT1621B PIN19 connects hummer, HT1621B PIN20 contact resistance R22, the resistance R22 other end connects hummer.
Power circuit 10 is made up of 2.5V voltage generation circuit and 5V voltage generation circuit as shown in Figure 7,2.5V voltage generation circuit adopts TL431 chip, utilize cell voltage to change a 2.5V reference voltage, and make to be digitally this voltage, the sampling for photosignal electric current provides wide lower limit; 5V voltage generation circuit adopts MD5350 chip, and utilize+9V voltage and digitally change out the digital voltage+5V of power supply, TL431 PIN1 connection digitally; TL431 PIN2 connecting analog ground; TL431 PIN3 connects digitally; MD5350 PIN1 connects digitally; MD5350 PIN2 connects S8550 collector; MD5350 PIN3 connection+5V; Electric capacity C11 connects MD5350 PIN1 and PIN2; S8550 emitter connection+9V; Resistance R18 connects S8550 collector and digitally; Resistance R9 one end connects MD5350 base stage, and the other end of resistance R9 is connected with diode cathode, and diode cathode connects digitally; Resistance R13 connects MD5350 base stage and emitter; Resistance R12 one end is connected with S8550 collector, and the resistance R12 other end is connected with resistance R1 one end and single-chip microcomputer PIN11, and the resistance R1 other end connects digitally.
Support 4 comprises one or more in nose frame, workprint frame and crystal frame.
Lightshade cover 12 is provided with outside photodiode receiving cable.
Blue light leaches the detection method of detector, photodiode receives blue light signals, this signal is by after photo-electric signal receiving circuit, carry out amplifying and delivering to control module through photoelectric signal processing circuit again, the analog input signal collected is converted to digital signal by control module, if the numerical value of digital signal is close to reaching 0-2
12during two edges of scope, control module exports the signal reselecting passage to photo-electric signal receiving circuit, photosignal enters photo-electric signal receiving circuit by another selection circuit, finally makes the numerical value of the digital signal in control module at 0-2
12in scope, at this moment control module output bus signal is to digital-scroll technique circuit, and LCD shows the blue light brightness value received by photodiode finally recorded.
After photosignal delivers to analogue selector divider by four selection circuit Zhong mono-tunnels, road, deliver to control module after being amplified by transport and placing device, the order that four road selection circuits are selected is followed successively by resistance R33 selection circuit, resistance R4 selection circuit, resistance R19 selection circuit and resistance R20 selection circuit; The corresponding blue light brightness of resistance R33 selection circuit is at the photosignal of below 2000Lx, the photosignal of blue light brightness between 2000-20000Lx that resistance R4 selection circuit is corresponding, blue light brightness corresponding to resistance R19 selection circuit is at the photosignal of below 20000-50000Lx, and the corresponding blue light brightness of resistance R20 selection circuit is at the photosignal of more than 50000Lx.After photosignal first delivers to analogue selector divider by resistance R33 selection circuit, then deliver to control module and carry out converting digital signal to after transport and placing device amplifies, if the numeral of digital signal is close to reaching 0-2
12the upper limit of scope or reach in limited time, then after photosignal delivers to analogue selector divider by resistance R4 selection circuit, then deliver to control module and carry out converting digital signal to, if or close to reaching 0-2 after transport and placing device amplifies
12the upper limit of scope or reach in limited time, then select next selection circuit, again if output bus signal is to digital-scroll technique circuit in specialized range.
Power circuit of the present invention can use 9V battery or power supply adaptor to power.Light source generator is for generation of the blue light illumination light of standard.Photodiode is for detecting the intensity of the blue light signals coming from light source generator.2 groups of photodiodes are used for detecting the intensity coming from the blue light signals of 2 groups of light source generators respectively.Lightshade cover 12 can stop the light interference that non-light source light causes effectively, effectively gets rid of reflection and the refraction of source light source scattered beam and other light simultaneously.Photoelectric signal processing circuit outputs to digital-scroll technique circuit by control module process and shows after carrying out simulating signal amplification process to the blue light signals that photo-electric signal receiving circuit collects.
Control method of the present invention is as follows, and power circuit is powered, and two light source generators can send two bundle blue lights simultaneously.Two photodiodes can detect the above-mentioned two bundle blue lights mentioned simultaneously.Digital-scroll technique circuit can power on stable after demonstrate detected value.At this moment can pass through accessory, between light source generator and photodiode, place glasses to be detected, eyeglass or artificial lens.So remaining light through product to be checked, will be irradiated on the photodiode by blue light.Light signal is after the amplification and filtering process of mimic channel, controlled unit collection also changes into digital signal, and carry out the aftertreatment of digital filtering, when new digital signal detection value is at this moment different from old detected value, this detected value can refresh the displayed value on nixie display.The blue light so just measuring tested glasses, eyeglass or artificial lens leaches rate.
In accessory of the present invention, there is blue light to contrast plate.Under released state, photodiode will directly receive the residue transmitted ray after filtering blue light.In the assembled condition, blue light contrast plate is placed in the front of photodiode, and shelters from photodiode reception blue light.Residue transmitted ray will be radiated on the surface of blue light contrast plate.User can by being observed visually the light radiation response before and after blue light filtering.
Claims (10)
1. blue light leaches detector, it is characterized in that by following Structure composing: main body control area and signals collecting district, the bottom in main body control area and signals collecting district is located on intermediate connector, prop up the upper surface be erected in the middle part of intermediate connector, two groups of light source generators are provided with in main body control area, photo-electric signal receiving circuit, photoelectric signal processing circuit, control module and digital-scroll technique circuit, one group of power circuit, two groups of light source generators are located at the inner side of main body control area, two groups of photodiodes are located in signals collecting district, two groups of photodiodes are located at the inner side in signals collecting district.
2. blue light according to claim 1 leaches detector, it is characterized in that light source generator sends blue light.
3. blue light according to claim 1 leaches detector, it is characterized in that photo-electric signal receiving circuit is by following Structure composing: the analogue selector divider of two 4 passages, model is HCF4052B, the PIN1 contact resistance R33 of analogue selector divider, PIN2 contact resistance R4, PIN3 connection outputs to photoelectric signal processing circuit PIN7, PIN4 contact resistance R19, PIN5 contact resistance R20, PIN6 connects digitally, PIN7 connecting analog ground, PIN8 connects digitally, PIN9 and PIN10 is connected to control module, PIN11, PIN12, PIN13, PIN14 with PIN15 is connected digitally, PIN16 connection+5V, resistance R4 is connected with semifixed resistor VR1, resistance R19 is connected with semifixed resistor VR2, resistance R20 is connected with semifixed resistor VR3, resistance R33, semifixed resistor VR1, semifixed resistor VR2 is connected with one end of photodiode with semifixed resistor VR3, the other end ground connection of photodiode.
4. blue light according to claim 1 leaches detector, it is characterized in that photoelectric signal processing circuit is by following Structure composing: transport and placing device, model is TLC2272, transport and placing device PIN1 connects one end of electric capacity C9 and semifixed resistor VR4, the semifixed resistor VR4 other end is connected with resistance R8 one end, the resistance R8 other end is connected with the other end of electric capacity C9 and one end of resistance R2, the other end of resistance R2 is connected with PIN7, resistance R10 is in parallel with resistance R2, PIN2 contact resistance R14 one end, the other end of resistance R14 is connected with the other end of electric capacity C9, PIN3 with PIN5 is connected digitally, PIN4 connecting analog ground, electric capacity C12 is provided with between PIN6 and PIN7, PIN6 and digitally between be provided with electric capacity C8, PIN6 connects photodiode, resistance R5 one end is connected with PIN1, the resistance R5 other end is connected with the PIN8 of control module, electric capacity C15 one end connects digitally, the electric capacity C15 other end is connected with the resistance R5 other end, PIN8 connection+5V, C14 one end connects PIN8, another termination of C14 in analog.
5. blue light according to claim 1 leaches detector, it is characterized in that control module is by following Structure composing: 8-bit microcontroller, crystal oscillator external circuits, reset circuit and bypass, isolation circuit is formed, single-chip microcomputer model is HT46R52A, PIN1 connects HCF4052B PIN10, PIN2 connects HCF4052B PIN9, PIN6 is connected to+5V, electric capacity C18 one end is connected to PIN6, the C18 other end connects digitally, PIN7 connects digitally, PIN8 contact resistance R5 and electric capacity C15, PIN11 contact resistance R1 and resistance R12, one end of PIN13 contact resistance R11 and electric capacity C7, another termination+5V of resistance R11, another termination of electric capacity C7 digitally, PIN14 connection+5V, PIN15 connects one end of electric capacity C13 and resistance R3, another termination+5V of electric capacity C13, another termination of resistance R3 digitally, C16 one end connects PIN14, the other end is connected to digitally.
6. blue light according to claim 1 leaches detector, it is characterized in that digital-scroll technique circuit is made up of LCD and LCD driving circuit, LCD driving circuit is made up of driving chip HT1621B and hummer, wherein driving chip HT1621B and control module communication Received signal strength, LCD PIN1 connects HT1621B PIN46, LCD PIN2 connects HT1621B PIN47, LCD PIN3 connects HT1621B PIN48, LCD PIN4 connects HT1621B PIN1, LCD PIN5 connects HT1621B PIN2, LCD PIN6 connects HT1621B PIN3, LCD PIN7 connects HT1621B PIN4, LCD PIN8 connects HT1621B PIN5, LCD PIN9 connects HT1621B PIN6, LCD PIN10 connects HT1621B PIN7, LCD PIN11 connects HT1621B PIN8, LCD PIN12 connects HT1621B PIN24, LCD PIN13 connects HT1621B PIN23, LCD PIN14 connects HT1621B PIN22, LCD PIN15 connects HT1621B PIN21, HT1621B PIN9 connects single-chip microcomputer PIN3, HT1621B PIN11 connects single-chip microcomputer PIN4, HT1621B PIN12 connects single-chip microcomputer PIN5, HT1621B PIN13 connects digitally, one end of HT1621B PIN16 contact resistance R23 and resistance R24, another termination+5V of resistance R23, another termination of resistance R24 digitally, the other end of HT1621B PIN17 contact resistance R23 and+5V, HT1621B PIN19 connects hummer, HT1621B PIN20 contact resistance R22, the resistance R22 other end connects hummer.
7. blue light according to claim 1 leaches detector, it is characterized in that power circuit is made up of 2.5V voltage generation circuit and 5V voltage generation circuit, 2.5V voltage generation circuit adopts TL431 chip, cell voltage is utilized to change a 2.5V reference voltage, and make to be digitally this voltage, the sampling for photosignal electric current provides wide lower limit; 5V voltage generation circuit adopts MD5350 chip, and utilize+9V voltage and digitally change out the digital voltage+5V of power supply, TL431 PIN1 connection digitally; TL431 PIN2 connecting analog ground; TL431 PIN3 connects digitally; MD5350 PIN1 connects digitally; MD5350 PIN2 connects S8550 collector; MD5350 PIN3 connection+5V; Electric capacity C11 connects MD5350 PIN1 and PIN2; S8550 emitter connection+9V; Resistance R18 connects S8550 collector and digitally; Resistance R9 one end connects MD5350 base stage, and the other end of resistance R9 is connected with diode cathode, and diode cathode connects digitally; Resistance R13 connects MD5350 base stage and emitter; Resistance R12 one end is connected with S8550 collector, and the resistance R12 other end is connected with resistance R1 one end and single-chip microcomputer PIN11, and the resistance R1 other end connects digitally.
8. blue light according to claim 1 leaches detector, it is characterized in that support comprises one or more in nose frame, workprint frame and crystal frame, is provided with lightshade cover outside photodiode receiving cable.
9. blue light according to claim 1 leaches the detection method of detector, it is characterized in that photodiode receives blue light signals, this signal is by after photo-electric signal receiving circuit, carry out amplifying and delivering to control module through photoelectric signal processing circuit again, the analog input signal collected is converted to digital signal by control module, if the numerical value of digital signal is close to reaching 0-2
12during two edges of scope, control module exports the signal reselecting passage to photo-electric signal receiving circuit, photosignal enters photo-electric signal receiving circuit by another selection circuit, finally makes the numerical value of the digital signal in control module at 0-2
12in scope, at this moment control module output bus signal is to digital-scroll technique circuit, and LCD shows the blue light brightness value received by photodiode finally recorded.
10. blue light according to claim 9 leaches the detection method of detector, after it is characterized in that photosignal delivers to analogue selector divider by four selection circuit Zhong mono-tunnels, road, deliver to control module after being amplified by transport and placing device, the order that four road selection circuits are selected is followed successively by resistance R33 selection circuit, resistance R4 selection circuit, resistance R19 selection circuit and resistance R20 selection circuit; The corresponding blue light brightness of resistance R33 selection circuit is at the photosignal of below 2000Lx, the photosignal of blue light brightness between 2000-20000Lx that resistance R4 selection circuit is corresponding, the photosignal of blue light brightness between 20000-50000Lx that resistance R19 selection circuit is corresponding, the corresponding blue light brightness of resistance R20 selection circuit is at the photosignal of more than 50000Lx.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108107603A (en) * | 2018-01-26 | 2018-06-01 | 江苏唯尊光学眼镜有限公司 | Blue light compares platform |
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