CN204795732U - But piece appearance is seen in automatic switch's projection - Google Patents

But piece appearance is seen in automatic switch's projection Download PDF

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Publication number
CN204795732U
CN204795732U CN201520430470.1U CN201520430470U CN204795732U CN 204795732 U CN204795732 U CN 204795732U CN 201520430470 U CN201520430470 U CN 201520430470U CN 204795732 U CN204795732 U CN 204795732U
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Prior art keywords
resistance
connects
automatic switch
projection
circuit
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CN201520430470.1U
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Inventor
孙志君
方继广
唐猛
王国荣
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Ying Fumeixin Science And Technology Ltd Of Suzhou City
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Ying Fumeixin Science And Technology Ltd Of Suzhou City
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Abstract

The utility model discloses a but piece appearance is seen in automatic switch's projection contains the infrared detection circuitry, analog -to -digital conversion module, amplifier circuit, filter circuit, the microcontroller module that connect gradually, an electrical shutoff control module is connected to the output of microcontroller module, simple structure is created in the invention, easily realizes, can realize seeing the automatic switch of mascerating machine, prolong life, avoid the waste of the energy effectively.

Description

A kind ofly the projection of automatic switch can see sheet instrument
Technical field
The present invention relates to and a kind of see sheet instrument, particularly relate to and a kind ofly the projection of automatic switch can see sheet instrument, belong to projection regulation and control field.
Background technology
Along with the development of the science and technology such as electronic computer, the modernization of Medical Devices, Study of intelligent more and more receive the concern of people, a large amount of scientists and engineers and technicians put in the revolution of these Medical Devices energetically, wherein, the research seeing sheet equipment to all kinds radiographic film is also the emphasis of Medical Devices exploitation.Because traditional sight sheet device brightness is low, lack of homogeneity, easily cause the shortcomings such as visual fatigue, can not meet the requirement of modernization medical diagnosis.Be much all hand switch at present, use during equipment and open equipment, startup power supply often also continues the useful life that the equipment that opens causes cold cathode fluorescent lamp when system idle.
The a kind of of such as " 201220101775.4 " watches the background light device that the optional smooth district of sheet machine seen by industrial flaw detection photographic negative, be made up of active controller, LED luminous plaque, band switch, it is characterized in that: active controller input termination 220VAC power supply, the positive and negative end of the output sending and receiving tabula rasa of active controller, the built-in segmentation contact of luminous plaque, the segmentation contact that the contact of band switch is built-in with luminous plaque respectively connects.The sight sheet machine using this utility model to make, because background light device luminous zone sectional is selected, so, when there is viewing standard egative film, can button-type egative film specification, select bias light yardstick, person easy to use watches the feature of egative film and energy savings, meet modern society to producing, life, energy-conservation, low-carbon (LC) requirement, have positive development prospect and the huge market demand.
And for example the one viewing industrial flaw detection photographic negative sight sheet machine sight sheet machine bias light of " 201210245512.5 " responds to film keying circuit automatically, be made up of power circuit A, sensor circuit B and the central processor circuit C that is accompanied with reset circuit, sensor circuit B communication bus SDAO holds and SCLO termination, is accompanied with SDAO end and the SCLO end of the central processing unit of the central processor circuit C of reset circuit; The power output end of power circuit A connects the input of central processing unit C.Use the viewing equipment that this invention is made, on the basis keeping original viewing equipment technical performance and technical indicator, once egative film is removed from viewing screen by user, bias light can removing and close with egative film, not only can effective energy savings, reduce the life consumption of components and parts, and the eyes of user can not be stimulated, there is urgent demand and Technique Popularizing value widely.
Summary of the invention
Technical problem to be solved by this invention provides for the deficiency of background technology a kind ofly the projection of automatic switch to see sheet instrument.
The present invention is for solving the problems of the technologies described above by the following technical solutions
The projection of automatic switch can see a sheet instrument, comprise the infrared circuit, analog-to-digital conversion module, amplifying circuit, filter circuit, the micro controller module that connect successively, the output of described micro controller module connects a power-off control module; Described infrared circuit comprises light-emitting diode, infrared receiving tube, the first resistance, the second resistance, electrochemical capacitor; The positive pole of light-emitting diode connects one end of the first resistance, the other end of the first resistance connects the emitter-base bandgap grading of infrared receiving tube and one end of electrochemical capacitor respectively, the other end ground connection of electrochemical capacitor, the collector of infrared receiving tube connects one end of the second resistance and the input of amplifying circuit respectively, the other end of the second resistance, the negative pole of diode ground connection respectively;
Described amplifying circuit comprises amplifier chip, the first resistance, the second resistance, the 3rd resistance; The output of analog-to-digital conversion module connects one end of the first resistance and the second resistance respectively, the other end of the second resistance connects the positive pole of amplifier chip, with the other end ground connection of the first resistance after the negative pole of amplifier chip and the 3rd resistant series, the voltage output end of amplifier chip connects the input of filter circuit.
The projection of automatic switch can see the further preferred version of sheet instrument as the present invention is a kind of, described light-emitting diode adopts 5MM light-emitting diode.
The projection of automatic switch can see the further preferred version of sheet instrument as the present invention is a kind of, described micro controller module adopts AVR series monolithic.
The projection of automatic switch can see the further preferred version of sheet instrument as the present invention is a kind of, the chip model of described analog-to-digital conversion module is TMS320LF240.
The projection of automatic switch can see the further preferred version of sheet instrument as the present invention is a kind of, described filter circuit adopts low pass filter.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1, structure of the present invention simple, be easy to realize;
2, the present invention adopts infrared circuit detect the output signal of outer receiving tube and then control to see the automatic switch that the opening and closing of sheet instrument can realize seeing sheet machine, extends useful life, efficiently avoid the waste of the energy.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention;
Fig. 2 is infrared circuit figure of the present invention;
Fig. 3 is amplifying circuit circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, the present invention designs and a kind ofly the projection of automatic switch can see sheet instrument, comprise the infrared circuit, analog-to-digital conversion module, amplifying circuit, filter circuit, the micro controller module that connect successively, the output of described micro controller module connects a power-off control module;
As shown in Figure 2, described infrared circuit comprises light-emitting diode, infrared receiving tube, the first resistance, the second resistance, electrochemical capacitor; The positive pole of light-emitting diode connects one end of the first resistance, the other end of the first resistance connects the emitter-base bandgap grading of infrared receiving tube and one end of electrochemical capacitor respectively, the other end ground connection of electrochemical capacitor, the collector of infrared receiving tube connects one end of the second resistance and the input of amplifying circuit respectively, the other end of the second resistance, the negative pole of diode ground connection respectively;
As shown in Figure 3, described amplifying circuit comprises amplifier chip, the first resistance, the second resistance, the 3rd resistance; The output of analog-to-digital conversion module connects one end of the first resistance and the second resistance respectively, the other end of the second resistance connects the positive pole of amplifier chip, with the other end ground connection of the first resistance after the negative pole of amplifier chip and the 3rd resistant series, the voltage output end of amplifier chip connects the input of filter circuit.
The present invention adopts infrared circuit detect the output signal of outer receiving tube and then control to see the automatic switch that the opening and closing of sheet instrument can realize seeing sheet machine, extends useful life, efficiently avoid the waste of the energy.
Wherein, described light-emitting diode adopts 5MM light-emitting diode.Described micro controller module adopts AVR series monolithic.The chip model of described analog-to-digital conversion module is TMS320LF240, and described filter circuit adopts low pass filter.
See sheet instrument automatic switch to be realized by infrared emission tube sensor.Insert radiographic film between infrared emission pipe after, infrared receiving tube then outputs signal, and Programmable detection is to this signal thus open CCFL; When system idle, see sheet instrument then automatic distinguishing.
Infrared circuit selects the SEP8505-002 of Honeywell Inc., and its operation wavelength is 935nm, and material is GaAs (GaAs), luminous power is 7.8mW/cm (lumen), spectral width is 80nm, and forward voltage drop is 1.5V, and output current is 20mA.Be SDP8405-002 with the infrared receiving tube of its pairing, power is 70mW, and working method is the triode emitter following way of output.The output saturation electric current of photoelectric receiving tube is the saturation voltage of 0.4mA, CE pole is 0.4V.
Wherein, infrared circuit comprises light-emitting diode, infrared receiving tube, the first resistance, the second resistance, electrochemical capacitor; The positive pole of light-emitting diode connects one end of the first resistance, the other end of the first resistance connects the emitter-base bandgap grading of infrared receiving tube and one end of electrochemical capacitor respectively, the other end ground connection of electrochemical capacitor, the collector of infrared receiving tube connects one end of the second resistance and the input of signal condition unit respectively, the other end of the second resistance, the negative pole of diode ground connection respectively.
The full name of PS232 interface is the DB25 connector that " between data terminal equipment and data communications equipment SERIAL BINARY DATA Fabric Interface technical standard " this standard specifies employing 25 pin, the signal content of each pin of connector is specified, also the level of various signal is specified.The pin that the serial ports of DB25 is generally only used only has RXD, TXD, GND these three, along with updating of equipment, present DB25 pin seldom sees, and what replace him is the interface of DB9, pin used by DB9 changes to some extent than DB25, is RXD, TXD, GND these three.Therefore all RS232 interface is called DB9 now.
AVR single chip has prefetched instruction function, namely when an execution instruction, in advance next instruction is got into, and call instruction can be performed within a clock cycle; Multiple accumulator type, data processing speed is fast; AVR single chip has 32 general purpose working registers, and being equivalent to has 32 viaducts, can fast passing; Response time is fast.AVR single chip has multiple fixing interrupt vector entry address, can respond interruption fast; AVR single chip power consumption is low.For typical power consumption situation, be 100nA when WDT closes, be more suitable for battery powered application apparatus; The minimum 1.8V of some devices gets final product work; AVR single chip security performance is good.
The infrared circuit that the present invention utilizes, it comprises light-emitting diode, infrared receiving tube, the first resistance, the second resistance, electrochemical capacitor; The positive pole of light-emitting diode connects one end of the first resistance, the other end of the first resistance connects the emitter-base bandgap grading of infrared receiving tube and one end of electrochemical capacitor respectively, the other end ground connection of electrochemical capacitor, the collector of infrared receiving tube connects one end of the second resistance and the input of signal condition unit respectively, the other end of the second resistance, the negative pole of diode ground connection respectively.Micro controller module detects the output signal of infrared receiving tube in real time by infrared emission tube sensor and then controls to see the opening and closing of sheet instrument; Described micro-control module connects host computer by communication unit, for seeing the setting of sheet instrument parameter.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, makes a variety of changes under can also or else departing from the prerequisite of present inventive concept.

Claims (5)

1. the projection of automatic switch can see sheet instrument for one kind, it is characterized in that: comprise the infrared circuit, analog-to-digital conversion module, amplifying circuit, filter circuit, the micro controller module that connect successively, the output of described micro controller module connects a power-off control module; Described infrared circuit comprises light-emitting diode, infrared receiving tube, the first resistance, the second resistance, electrochemical capacitor; The positive pole of light-emitting diode connects one end of the first resistance, the other end of the first resistance connects the emitter-base bandgap grading of infrared receiving tube and one end of electrochemical capacitor respectively, the other end ground connection of electrochemical capacitor, the collector of infrared receiving tube connects one end of the second resistance and the input of amplifying circuit respectively, the other end of the second resistance, the negative pole of diode ground connection respectively;
Described amplifying circuit comprises amplifier chip, the first resistance, the second resistance, the 3rd resistance; The output of analog-to-digital conversion module connects one end of the first resistance and the second resistance respectively, the other end of the second resistance connects the positive pole of amplifier chip, with the other end ground connection of the first resistance after the negative pole of amplifier chip and the 3rd resistant series, the voltage output end of amplifier chip connects the input of filter circuit.
2. according to claim 1ly a kind ofly the projection of automatic switch can see sheet instrument, it is characterized in that: described light-emitting diode adopts 5MM light-emitting diode.
3. according to claim 1ly a kind ofly the projection of automatic switch can see sheet instrument, it is characterized in that: described micro controller module adopts AVR series monolithic.
4. according to claim 1ly a kind ofly the projection of automatic switch can see sheet instrument, it is characterized in that: the chip model of described analog-to-digital conversion module is TMS320LF240.
5. according to claim 1ly a kind ofly the projection of automatic switch can see sheet instrument, it is characterized in that: described filter circuit adopts low pass filter.
CN201520430470.1U 2015-06-23 2015-06-23 But piece appearance is seen in automatic switch's projection Active CN204795732U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104883801A (en) * 2015-06-23 2015-09-02 苏州市英富美欣科技有限公司 Projection film-viewing instrument capable of realizing automatic start-up and shutdown

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104883801A (en) * 2015-06-23 2015-09-02 苏州市英富美欣科技有限公司 Projection film-viewing instrument capable of realizing automatic start-up and shutdown

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