CN204789903U - Intelligence LED differentiates appearance - Google Patents
Intelligence LED differentiates appearance Download PDFInfo
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- CN204789903U CN204789903U CN201520437603.8U CN201520437603U CN204789903U CN 204789903 U CN204789903 U CN 204789903U CN 201520437603 U CN201520437603 U CN 201520437603U CN 204789903 U CN204789903 U CN 204789903U
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Abstract
The utility model discloses an intelligence LED differentiates appearance contains two LED detection circuitry, an amplifier circuit, a comparison circuit and an output circuit, two LED detection circuitry are connected with amplifier circuit, and amplifier circuit and comparison circuit are connected, and comparison circuit and output circuit are connected. The utility model discloses a forward offset voltage of intelligence LED differentiates appearance through detecting the LED lamp be through enlargeing, thereby then carry out after the comparison output result with presupposition voltage and drive dynamic relay, the flickering of control pilot lamp, easy operation like this to need not staring at the LED lamp for a long time, thereby avoided the kopiopia, reduce and detect the tired testing result error score that produces.
Description
Technical field
The utility model relates to a kind of differentiation instrument, and particularly a kind of intelligent LED differentiates instrument.
Background technology
LED, be a kind of solid-state semiconductor devices, it directly can be converted into light electricity.In daily life, we through conventional LED send different colours light to represent instrument and meter, electron device is in different duties.Such as: computer network interface connector usually has outside a RJ-45 interface on end face, also have 2 LED, green glow and gold-tinted can be sent respectively.Network interface card at work, judges the working condition of network interface card by the color of LED and blink states.In manufacturing process, check whether LED installs correctly, usually can only be identified by the eyes of workman, and work for a long time, often produce visual fatigue, produce erroneous judgement, thus produce bad product.In order to being convenient to whether correctly to detect LED installation, reducing labor strength, needing a kind of intelligent LED to differentiate instrument.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of intelligent LED and differentiates instrument, and he can identify whether LED installs correctly automatically.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of intelligent LED differentiates instrument, it is characterized in that: comprise two LED testing circuits, amplifying circuit, a comparator circuit and an output circuit, described two LED testing circuits are connected with amplifying circuit, and amplifying circuit is connected with comparator circuit, and comparator circuit is connected with output circuit.
Further, described LED testing circuit comprises LM317A chip, LM317B chip, four filter capacitor C1, C2, C3, C4, two adjustable resistance RP1, RP2 and two LED D1 to be measured, D2, 3 pin of LM317A chip are connected with one end of power supply VCC0 and filter capacitor C2, the other end ground connection of filter capacitor C2, 2 pin of LM317A chip are connected with one end of one end of adjustable resistance RP1 and filter capacitor C1, 1 pin of the other end of adjustable resistance RP1 and another termination LM317A chip of filter capacitor C1, LED D1 minus earth to be measured, positive pole connects 1 pin of LM317A chip and leading-out terminal exports forward bias voltage V0A, 3 pin of LM317B chip are connected with one end of power supply VCC0 and filter capacitor C4, the other end ground connection of filter capacitor C4,2 pin of LM317B chip are connected with one end of one end of adjustable resistance RP2 and filter capacitor C3,1 pin of the other end of adjustable resistance RP2 and another termination LM317B chip of filter capacitor C3, LED D2 minus earth to be measured, positive pole connects 1 pin of LM317B chip and leading-out terminal exports forward bias voltage V1A.
Further, described amplifying circuit comprises LM358 chip, resistance R1, R3 and adjustable resistance RP5, RP6, 1 pin of resistance R1 mono-termination LM358 chip, 2 pin of another termination LM358 chip of resistance R1, 2 pin of adjustable resistance RP5 mono-termination LM358 chip, adjustable resistance RP5 other end ground connection, 3 pin of LM358 chip meet forward bias voltage V0A, 4 pin ground connection of LM358 chip, 1 pin leading-out terminal of LM358 chip exports amplification voltage signal V0B, 5 pin of LM358 chip meet forward bias voltage V1A, 6 pin of adjustable resistance RP6 mono-termination LM358 chip, adjustable resistance RP6 other end ground connection, 7 pin of resistance R3 mono-termination LM358 chip, 6 pin of another termination LM358 chip of resistance R3, 8 pin of LM358 chip meet power supply VCC0, 7 pin leading-out terminals of LM358 chip export amplification voltage signal V1B.
Further, described comparator circuit comprises LM339 chip, resistance R5, R6, R7, R8, R9, R10 and adjustable resistance RP4, RP3, 2 pin leading-out terminals of LM339 chip export comparative result V0C, resistance R7 mono-termination power VCC0, 2 pin of another termination LM339 chip of resistance R7, 3 pin of LM339 chip meet power supply VCC0, 4 pin connecting resistance R6 one end of LM339 chip, the resistance R6 other end is connected with resistance R5 one end and adjustable resistance RP4 one end, resistance R5 other end ground connection, another termination power of adjustable resistance RP4 VCC0, 5 pin of LM339 chip meet amplification voltage signal V0B, 14 pin leading-out terminals of LM339 chip export comparative result V1C, resistance R10 mono-termination power VCC0, 14 pin of another termination LM339 chip of resistance R10, 12 pin ground connection of LM339 chip, 9 pin of LM339 chip meet amplification voltage signal V1B, 8 pin connecting resistance R9 one end of LM339 chip, the resistance R9 other end is connected with resistance R8 one end and adjustable resistance RP3 one end, resistance R8 other end ground connection, another termination power of adjustable resistance RP3 VCC0.
Further, described output circuit comprises 74LS32 chip and relay K A, 7 pin ground connection of 74LS32 chip, 14 pin of 74LS32 chip meet power supply VCC0, and 10 pin of 74LS32 chip meet comparative result V0C, 9 pin of 74LS32 chip meet comparative result V1C, 8 pin of 74LS32 chip are connected with relay K A one end, another termination power of relay K A VCC0, relay K A normally opened contact 2 ground connection, relay K A normally opened contact 1 connects pilot lamp negative pole, and pilot lamp positive pole meets power supply VCC0.
The utility model compared with prior art, have the following advantages and effect: intelligent LED differentiates that instrument utilizes the LED characteristic that forward bias voltage is different under forward current same case, forward bias voltage LED produced utilizes comparer that the voltage of gained is compared with predeterminated voltage after amplifying, by the result phase of two LED or, make mistakes when there being a LED, pilot lamp is bright, prompting makes mistakes, LED like this without the need to staring at flicker is always seen, thus avoid eye fatigue, ensure that efficiency and the effect of test, reduce the error rate detected.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that a kind of intelligent LED of the present utility model differentiates instrument.
Fig. 2 is the testing circuit schematic diagram that a kind of intelligent LED of the present utility model differentiates instrument.
Fig. 3 is the amplifying circuit schematic diagram that a kind of intelligent LED of the present utility model differentiates instrument.
Fig. 4 is the comparator circuit schematic diagram that a kind of intelligent LED of the present utility model differentiates instrument.
Fig. 5 is the output circuit schematic diagram that a kind of intelligent LED of the present utility model differentiates instrument.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
As shown in the figure, a kind of intelligent LED of the present utility model differentiates that instrument comprises two LED testing circuits, amplifying circuit, a comparator circuit and an output circuit, two LED testing circuits are connected with amplifying circuit, and amplifying circuit is connected with comparator circuit, and comparator circuit is connected with output circuit.
LED testing circuit comprises LM317A chip, LM317B chip, four filter capacitor C1, C2, C3, C4, two adjustable resistance RP1, RP2 and two LED D1 to be measured, D2, 3 pin of LM317A chip are connected with one end of power supply VCC0 and filter capacitor C2, the other end ground connection of filter capacitor C2, 2 pin of LM317A chip are connected with one end of one end of adjustable resistance RP1 and filter capacitor C1, 1 pin of the other end of adjustable resistance RP1 and another termination LM317A chip of filter capacitor C1, LED D1 minus earth to be measured, positive pole connects 1 pin of LM317A chip and leading-out terminal exports forward bias voltage V0A, 3 pin of LM317B chip are connected with one end of power supply VCC0 and filter capacitor C4, the other end ground connection of filter capacitor C4,2 pin of LM317B chip are connected with one end of one end of adjustable resistance RP2 and filter capacitor C3,1 pin of the other end of adjustable resistance RP2 and another termination LM317B chip of filter capacitor C3, LED D2 minus earth to be measured, positive pole connects 1 pin of LM317B chip and leading-out terminal exports forward bias voltage V1A.
Amplifying circuit comprises LM358 chip, resistance R1, R3 and adjustable resistance RP5, RP6, 1 pin of resistance R1 mono-termination LM358 chip, 2 pin of another termination LM358 chip of resistance R1, 2 pin of adjustable resistance RP5 mono-termination LM358 chip, adjustable resistance RP5 other end ground connection, 3 pin of LM358 chip meet forward bias voltage V0A, 4 pin ground connection of LM358 chip, 1 pin leading-out terminal of LM358 chip exports amplification voltage signal V0B, 5 pin of LM358 chip meet forward bias voltage V1A, 6 pin of adjustable resistance RP6 mono-termination LM358 chip, adjustable resistance RP6 other end ground connection, 7 pin of resistance R3 mono-termination LM358 chip, 6 pin of another termination LM358 chip of resistance R3, 8 pin of LM358 chip meet power supply VCC0, 7 pin leading-out terminals of LM358 chip export amplification voltage signal V1B.
Comparator circuit comprises LM339 chip, resistance R5, R6, R7, R8, R9, R10 and adjustable resistance RP4, RP3, 2 pin leading-out terminals of LM339 chip export comparative result V0C, resistance R7 mono-termination power VCC0, 2 pin of another termination LM339 chip of resistance R7, 3 pin of LM339 chip meet power supply VCC0, 4 pin connecting resistance R6 one end of LM339 chip, the resistance R6 other end is connected with resistance R5 one end and adjustable resistance RP4 one end, resistance R5 other end ground connection, another termination power of adjustable resistance RP4 VCC0, 5 pin of LM339 chip meet amplification voltage signal V0B, 14 pin leading-out terminals of LM339 chip export comparative result V1C, resistance R10 mono-termination power VCC0, 14 pin of another termination LM339 chip of resistance R10, 12 pin ground connection of LM339 chip, 9 pin of LM339 chip meet amplification voltage signal V1B, 8 pin connecting resistance R9 one end of LM339 chip, the resistance R9 other end is connected with resistance R8 one end and adjustable resistance RP3 one end, resistance R8 other end ground connection, another termination power of adjustable resistance RP3 VCC0.
Output circuit comprises 74LS32 chip and relay K A, 7 pin ground connection of 74LS32 chip, 14 pin of 74LS32 chip meet power supply VCC0,10 pin of 74LS32 chip meet comparative result V0C, and 9 pin of 74LS32 chip meet comparative result V1C, and 8 pin of 74LS32 chip are connected with relay K A one end, another termination power of relay K A VCC0, relay K A normally opened contact 2 ground connection, relay K A normally opened contact 1 connects pilot lamp negative pole, and pilot lamp positive pole meets power supply VCC0.
By the volt-ampere characteristic of diode, we know that the LED of different colours is when forward current is identical, and its forward bias voltage is different.Utilize this characteristic, we adopt constant current source to provide constant electric current to yellow led and green LED, and different LED will produce different forward bias voltage.Measured forward bias voltage is amplified, utilizes comparer that measured voltage and the voltage range that presets are compared, then by the result phase that compares or, wherein any one LED makes mistakes, capital pilot relay exports, and the normally opened contact of relay closes, and pilot lamp is bright; Switching on and off of normally closed contact, can provide signal for peripherals, orders about peripherals and works in a different manner.
Above content described in this instructions is only to the explanation of the utility model example.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from the content of the utility model instructions or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (5)
1. an intelligent LED differentiates instrument, it is characterized in that: comprise two LED testing circuits, amplifying circuit, a comparator circuit and an output circuit, described two LED testing circuits are connected with amplifying circuit, and amplifying circuit is connected with comparator circuit, and comparator circuit is connected with output circuit.
2. differentiate instrument according to a kind of intelligent LED according to claim 1, it is characterized in that: described LED testing circuit comprises LM317A chip, LM317B chip, four filter capacitor C1, C2, C3, C4, two adjustable resistance RP1, RP2 and two LED D1 to be measured, D2, 3 pin of LM317A chip are connected with one end of power supply VCC0 and filter capacitor C2, the other end ground connection of filter capacitor C2, 2 pin of LM317A chip are connected with one end of one end of adjustable resistance RP1 and filter capacitor C1, 1 pin of the other end of adjustable resistance RP1 and another termination LM317A chip of filter capacitor C1, LED D1 minus earth to be measured, positive pole connects 1 pin of LM317A chip and leading-out terminal exports forward bias voltage V0A, 3 pin of LM317B chip are connected with one end of power supply VCC0 and filter capacitor C4, the other end ground connection of filter capacitor C4,2 pin of LM317B chip are connected with one end of one end of adjustable resistance RP2 and filter capacitor C3,1 pin of the other end of adjustable resistance RP2 and another termination LM317B chip of filter capacitor C3, LED D2 minus earth to be measured, positive pole connects 1 pin of LM317B chip and leading-out terminal exports forward bias voltage V1A.
3. differentiate instrument according to a kind of intelligent LED according to claim 1, it is characterized in that: described amplifying circuit comprises LM358 chip, resistance R1, R3 and adjustable resistance RP5, RP6, 1 pin of resistance R1 mono-termination LM358 chip, 2 pin of another termination LM358 chip of resistance R1, 2 pin of adjustable resistance RP5 mono-termination LM358 chip, adjustable resistance RP5 other end ground connection, 3 pin of LM358 chip meet forward bias voltage V0A, 4 pin ground connection of LM358 chip, 1 pin leading-out terminal of LM358 chip exports amplification voltage signal V0B, 5 pin of LM358 chip meet forward bias voltage V1A, 6 pin of adjustable resistance RP6 mono-termination LM358 chip, adjustable resistance RP6 other end ground connection, 7 pin of resistance R3 mono-termination LM358 chip, 6 pin of another termination LM358 chip of resistance R3, 8 pin of LM358 chip meet power supply VCC0, 7 pin leading-out terminals of LM358 chip export amplification voltage signal V1B.
4. differentiate instrument according to a kind of intelligent LED according to claim 1, it is characterized in that: described comparator circuit comprises LM339 chip, resistance R5, R6, R7, R8, R9, R10 and adjustable resistance RP4, RP3, 2 pin leading-out terminals of LM339 chip export comparative result V0C, resistance R7 mono-termination power VCC0, 2 pin of another termination LM339 chip of resistance R7, 3 pin of LM339 chip meet power supply VCC0, 4 pin connecting resistance R6 one end of LM339 chip, the resistance R6 other end is connected with resistance R5 one end and adjustable resistance RP4 one end, resistance R5 other end ground connection, another termination power of adjustable resistance RP4 VCC0, 5 pin of LM339 chip meet amplification voltage signal V0B, 14 pin leading-out terminals of LM339 chip export comparative result V1C, resistance R10 mono-termination power VCC0, 14 pin of another termination LM339 chip of resistance R10, 12 pin ground connection of LM339 chip, 9 pin of LM339 chip meet amplification voltage signal V1B, 8 pin connecting resistance R9 one end of LM339 chip, the resistance R9 other end is connected with resistance R8 one end and adjustable resistance RP3 one end, resistance R8 other end ground connection, another termination power of adjustable resistance RP3 VCC0.
5. differentiate instrument according to a kind of intelligent LED according to claim 1, it is characterized in that: described output circuit comprises 74LS32 chip and relay K A, 7 pin ground connection of 74LS32 chip, 14 pin of 74LS32 chip meet power supply VCC0,10 pin of 74LS32 chip meet comparative result V0C, 9 pin of 74LS32 chip meet comparative result V1C, 8 pin of 74LS32 chip are connected with relay K A one end, another termination power of relay K A VCC0, relay K A normally opened contact 2 ground connection, relay K A normally opened contact 1 connects pilot lamp negative pole, and pilot lamp positive pole meets power supply VCC0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437603.8U CN204789903U (en) | 2015-06-24 | 2015-06-24 | Intelligence LED differentiates appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437603.8U CN204789903U (en) | 2015-06-24 | 2015-06-24 | Intelligence LED differentiates appearance |
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| Publication Number | Publication Date |
|---|---|
| CN204789903U true CN204789903U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520437603.8U Expired - Fee Related CN204789903U (en) | 2015-06-24 | 2015-06-24 | Intelligence LED differentiates appearance |
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| CN (1) | CN204789903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991181A (en) * | 2015-06-24 | 2015-10-21 | 南京铁道职业技术学院 | Intelligent LED discriminator |
-
2015
- 2015-06-24 CN CN201520437603.8U patent/CN204789903U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991181A (en) * | 2015-06-24 | 2015-10-21 | 南京铁道职业技术学院 | Intelligent LED discriminator |
| CN104991181B (en) * | 2015-06-24 | 2018-06-19 | 南京铁道职业技术学院 | A kind of intelligent LED differentiates instrument |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160624 |
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| CF01 | Termination of patent right due to non-payment of annual fee |