CN203261337U - Infrared emission circuit - Google Patents
Infrared emission circuit Download PDFInfo
- Publication number
- CN203261337U CN203261337U CN 201320274067 CN201320274067U CN203261337U CN 203261337 U CN203261337 U CN 203261337U CN 201320274067 CN201320274067 CN 201320274067 CN 201320274067 U CN201320274067 U CN 201320274067U CN 203261337 U CN203261337 U CN 203261337U
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- triode
- resistance
- infrared
- infrared emission
- power supply
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Abstract
The utility model discloses an infrared emission circuit. The infrared emission circuit comprises an infrared emission diode VD1, a triode V1, a resistor R1 and a resistor R2; one end of the resistor R1 is connected with one end of the resistor R2 and a b pole of the triode V1; the other end of the resistor R2 is connected with a power supply VCC end; an anode of the infrared diode VD1 is connected with the one end of the power supply VCC end; a cathode of the infrared emission diode VD1 is connected with an e pole of the triode V1; and the infrared emission circuit also comprises a current limiting resistor, one end of the current limiting resistor is connected with a c pole of the triode V1, and the other end of the current limiting resistor is connected with a power supply GND end. The infrared emission circuit with low power consumption is capable of ensuring strong driving current of the infrared emission diode.
Description
Technical field
The utility model relates to an infrared communication circuit for electric energy meter, specifically is a kind of infrared transmitting circuit.
Background technology
The infrared transmitting circuit of prior art as shown in Figure 1, it is by resistance R 1, R2, R3, R4, infrared-emitting diode and triode form.There is following defective in the infrared transmitting circuit of foregoing circuit structure in the course of work of reality: owing to be operated in the amplification region during triode conducting of this circuit, therefore not only power consumption is high, and can cause the drive current of infrared-emitting diode limited, so that the transmitted power during infrared communication diminishes, thereby affect communication distance and angle.
The utility model content
The technical problems to be solved in the utility model is, overcomes the defective of above prior art, provides a kind of low in energy consumption and can guarantee the infrared transmitting circuit that the infrared-emitting diode drive current is large.
The technical solution of the utility model is, a kind of infrared transmitting circuit is provided, comprise infrared-emitting diode VD1, triode V1, resistance R 1 and R2, one end of described resistance R 1 is connected with the b utmost point of an end of resistance R 2, triode V1, the other end of described resistance R 2 is connected with power supply VCC end, the anode of described infrared-emitting diode VD1 is connected with power supply VCC end, and the negative electrode of described infrared-emitting diode VD1 is connected with the e utmost point of triode V1; Described infrared transmitting circuit also comprises a current-limiting resistance, and an end of described current-limiting resistance is connected with the c utmost point of triode V1, and the other end of described current-limiting resistance is connected with power supply GND end.
Described current-limiting resistance comprises resistance R 3, R4 and R5, and described resistance R 3, R4 and R5 are in parallel; The end of described resistance R 3, R4, R5 is connected with the c utmost point of triode V1, and the other end of described R3, R4, R5 is connected with power supply GND end.
After adopting above structure, the utility model compared with prior art has the following advantages:
Be operated in the saturation region during triode conducting of the utility model infrared transmitting circuit, therefore not only low in energy consumption, and so that the drive current of infrared-emitting diode is larger, and then so that the transmitted power during infrared communication is larger, thereby promoted communication distance and angle.
Description of drawings
Fig. 1 is the circuit theory diagrams of prior art infrared transmitting circuit.
Fig. 2 is the circuit theory diagrams of the utility model infrared transmitting circuit.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 2, a kind of infrared transmitting circuit of the utility model, comprise infrared-emitting diode VD1, triode V1, resistance R 1 and R2, an end of described resistance R 1 is connected with the b utmost point of an end of resistance R 2, triode V1, and the other end of described resistance R 1 is signal input part; The other end of described resistance R 2 is connected with power supply VCC end, and the anode of described infrared-emitting diode VD1 is connected with power supply VCC end, and the negative electrode of described infrared-emitting diode VD1 is connected with the e utmost point of triode V1; Described infrared transmitting circuit also comprises a current-limiting resistance, and an end of described current-limiting resistance is connected with the c utmost point of triode V1, and the other end of described current-limiting resistance is connected with power supply GND end.
Described current-limiting resistance comprises resistance R 3, R4 and R5, and described resistance R 3, R4 and R5 are in parallel; The end of described resistance R 3, R4, R5 is connected with the c utmost point of triode V1, and the other end of described R3, R4, R5 is connected with power supply GND end.
The utility model infrared transmitting circuit actual measurement finds, air line distance 15m when sending the loop duty ratio and being 30%, about 30 ° apart from 10m, 45 ° apart from 6.5m up and down, success rate is more than 90%.On the basis that wananty costs increases hardly, greatly promote infrared communication distance and angle, through verification the verifying results is good in batches.
Below only be described with regard to most preferred embodiment of the present utility model, but can not be interpreted as it is limitations on claims.The utility model is not limited only to above embodiment, and its concrete structure allows to change.In every case the various variations of doing in the protection range of the utility model independent claims are all in protection range of the present utility model.
Claims (2)
1. infrared transmitting circuit, comprise infrared-emitting diode VD1, triode V1, resistance R 1 and R2, one end of described resistance R 1 is connected with the b utmost point of an end of resistance R 2, triode V1, the other end of described resistance R 2 is connected with power supply VCC end, it is characterized in that: the anode of described infrared-emitting diode VD1 is connected with power supply VCC end, and the negative electrode of described infrared-emitting diode VD1 is connected with the e utmost point of triode V1; Described infrared transmitting circuit also comprises a current-limiting resistance, and an end of described current-limiting resistance is connected with the c utmost point of triode V1, and the other end of described current-limiting resistance is connected with power supply GND end.
2. infrared transmitting circuit according to claim 1, it is characterized in that: described current-limiting resistance comprises resistance R 3, R4 and R5, described resistance R 3, R4 and R5 are in parallel; The end of described resistance R 3, R4, R5 is connected with the c utmost point of triode V1, and the other end of described R3, R4, R5 is connected with power supply GND end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320274067 CN203261337U (en) | 2013-05-16 | 2013-05-16 | Infrared emission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320274067 CN203261337U (en) | 2013-05-16 | 2013-05-16 | Infrared emission circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203261337U true CN203261337U (en) | 2013-10-30 |
Family
ID=49473867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320274067 Expired - Lifetime CN203261337U (en) | 2013-05-16 | 2013-05-16 | Infrared emission circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203261337U (en) |
-
2013
- 2013-05-16 CN CN 201320274067 patent/CN203261337U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315191 Yinzhou Industrial Park, Zhejiang, Ningbo, Yinzhou District, Ningbo Patentee after: NINGBO SANXING MEDICAL & ELECTRIC Co.,Ltd. Address before: 315131, AUX Industrial Park, Mingguang North Road, Jiangshan Town, Ningbo, Yinzhou District, Zhejiang 1166, China Patentee before: NINGBO SANXING ELECTRIC Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |