CN201285598Y - AC/DC isolation signal transducer - Google Patents
AC/DC isolation signal transducer Download PDFInfo
- Publication number
- CN201285598Y CN201285598Y CNU200820014527XU CN200820014527U CN201285598Y CN 201285598 Y CN201285598 Y CN 201285598Y CN U200820014527X U CNU200820014527X U CN U200820014527XU CN 200820014527 U CN200820014527 U CN 200820014527U CN 201285598 Y CN201285598 Y CN 201285598Y
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Abstract
The utility model relates to an AC/DC insulation signal transmitter which comprises an insulation circuit, a signal amplification/attenuation circuit, a true effective value conversion circuit, a power supply circuit and an insulation power supply circuit, wherein input AC/DC signals are insulated and amplified/attenuated by the insulation circuit and the signal amplification/attenuation circuit, and then the effective value of the signals is computed by the true effective value conversion circuit, and finally the signals are output. The utility model adopts the modular circuit structure, can produce DC/AC universal transmitters with different transformation ratios, has little power consumption, and is convenient for maintenance, debugging and organization of production.
Description
Technical field
The utility model belongs to used for rail vehicle signal transmitting devices such as locomotive and light rail car, relates generally to a kind of locomotive AC/DC isolation signals transmitter.
Background technology
What locomotive was mainly used at present is Hall type signal transmitting device, and its major defect is: power consumption is big, the difficulty of adjusting, and it is unsuitable to safeguard, dismantle.
Summary of the invention
For the power consumption that solves above-mentioned Hall type signal transmitting device is big, the difficulty of adjusting, safeguard that dismounting should not wait problem, the utility model provides a kind of AC/DC isolation signals transmitter.
The technical solution of the utility model is as follows: a kind of AC/DC isolation signals transmitter, it is characterized in that: it comprises buffer circuit, signal amplification circuit, real effective change-over circuit, power circuit, insulating power supply circuit, after the isolation and amplification of the interchange of input or dc current signal, export after calculating its effective value by the real effective change-over circuit through buffer circuit, signal amplification circuit.
Described buffer circuit is: the resistance R 2 of series connection, capacitor C 7 is connected to the input signal IN+ that is connected through input connector CN1 with resistance R 1, between IN-, 1 pin of isolating converter IC1 (HCPL7800) meets power vd D1, be connected to capacitor C 8 between 1 pin and 4 pin, input signal IN+ connects 2 pin of isolating converter IC1 (HCPL7800) through resistance R 2, input signal IN-connects 3 pin and 4 pin of isolating converter IC1 (HCPL7800), 8 pin of isolating converter IC1 (HCPL7800) meet power vd D2 and through capacitor C 9 ground connection, the 5 pin ground connection of isolating converter IC1 (HCPL7800), 6 pin and 7 pin connect 2 pin and 3 pin of amplifier IC2 (LM741) in the signal amplification circuit respectively through resistance R 3 and R4,7 pin of isolating converter IC1 (HCPL7800) are through the resistance R 3 of serial connection, capacitor C 10 and resistance R 6 in parallel, adjustable resistance P3 ground connection.
Described signal amplification circuit is: the 4 foot meridian capacitor C6 ground connection of amplifier IC2 (LM741), power supply VSS connects 1 pin and 5 pin of amplifier IC2 (LM741) through adjustable resistance P1,7 pin of amplifier IC2 (LM741) meet power vd D and through capacitor C 5 ground connection, 6 pin that 2 pin of amplifier IC2 (LM741) and 3 pin all meet amplifier IC2 (LM741) through capacitor C 11 and resistance R 5, the adjustable resistance P2 of parallel connection, 6 pin of amplifier IC2 (LM741) connect 3 pin and 4 pin of IC3 in the real effective change-over circuit (AD536) through adjustable resistance P4.
Described real effective change-over circuit is: 3 pin of IC3 (AD536) and 4 pin ground connection, be connected to the resistance R 16 and the adjustable resistance P5 of series connection between 1 pin and 2 pin, 1 pin of IC3 (AD536), 5 pin of IC3 (AD536) meet power supply VSS and through capacitor C 17 ground connection, be connected to resistance R 8 between 9 pin of IC3 (AD536) and 10 pin, 10 pin of IC3 (AD536) are through capacitor C 13, the C15 ground connection of series connection, the 9 foot meridian capacitor C14 ground connection of IC3 (AD536), the 8 foot meridian capacitor C15 ground connection of IC3 (AD536) are also through resistance R 15 outputs.
Described power circuit is: 1 pin of out connector CN2 is through diode in series D1, inductance L 1 out-put supply VDD; 2 pin of out connector CN2 are through diode in series D2, inductance L 2 out-put supply VSS; 1 pin of out connector CN2 is through diode in series D1, inductance L 1, capacitor C 4 ground connection, and 2 pin of out connector CN2 are through diode in series D2, inductance L 2, capacitor C 3 ground connection, 3 pin of out connector CN2 and 4 pin ground connection.
Described insulating power supply circuit is: 10,12 pin of IC4 (SG2525) connect power supply VSS, 15 pin ground connection; 1 pin connects VSS by R13, and connect between 9 pin C19 and R12; 2 pin are connected the back and meet VSS by R14 with 16 pin; 3,4 pin are unsettled; 5 pin connect VSS by C21, and connect by R10 between 7 pin; 6 pin meet VSS by R11; 8 pin connect VSS by C20; 11,14 pin connect the former limit of isolating transformer T1; 13 pin connect VSS by C18, connect ground by R9; The ac input end that connects the full-wave bridge rectifier circuit that constitutes by D3, D4, D5, D6 behind the secondary shunt capacitance C23 of isolating transformer T1, dc output end electrochemical capacitor C22 in parallel, anodal 1 pin that connects IC6 (78L05) of C22, negative pole connects 3 pin of IC6 (78L05), the negative pole of C2, C24 as GND1,2 pin of IC6 (78L05) connect the positive pole of C2, and connect the positive pole of C24 as VDD1, with the GND1 output isolated power supply by inductance L 3; The 3 pin ground connection of IC5 (78L05), 1 pin meets power vd D, is connected to C1 between 2 pin and 3 pin, 2 pin out-put supply VDD2.
After adopting technique scheme, the utility model adopts modular circuit structure, can produce the direct current of different no-load voltage ratios or the transmitter of AC/DC universal type according to requirement of client, and power consumption is little, is convenient to safeguard, debugs and tissue production.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model.
Fig. 2 is a circuit structure diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated
The utility model is a kind of AC/DC isolation signals transmitter that is used for locomotive.
As shown in Figure 1 and Figure 2, the utility model is an electronic type signal transmitting device, and its circuit adopts modular design, comprises buffer circuit, signal amplification circuit, real effective change-over circuit, power circuit, insulating power supply circuit.After the isolation and amplification of the interchange of importing during work or dc current signal, export after calculating its effective value by the real effective change-over circuit through buffer circuit, signal amplification circuit.
Physical construction of the present utility model also adopts modular design, and unified its installation dimension to save the space of locomotive electric apparatus chamber, is convenient to safeguard.
Claims (6)
1, a kind of AC/DC isolation signals transmitter, it is characterized in that: it comprises buffer circuit, signal amplification circuit, real effective change-over circuit, power circuit, insulating power supply circuit, after the isolation and amplification of the interchange of input or dc current signal, export after calculating its effective value by the real effective change-over circuit through buffer circuit, signal amplification circuit.
2, AC/DC isolation signals transmitter as claimed in claim 1, it is characterized in that: described buffer circuit is: the resistance R 2 of series connection, capacitor C 7 is connected to the input signal IN+ that is connected through input connector CN1 with resistance R 1, between IN-, 1 pin of isolating converter IC1 meets power vd D1, be connected to capacitor C 8 between 1 pin and 4 pin, input signal IN+ connects 2 pin of isolating converter IC1 through resistance R 2, input signal IN-connects 3 pin and 4 pin of isolating converter IC1,8 pin of isolating converter IC1 meet power vd D2 and through capacitor C 9 ground connection, the 5 pin ground connection of isolating converter IC1,6 pin and 7 pin connect 2 pin and 3 pin of amplifier IC2 in the signal amplification circuit respectively through resistance R 3 and R4,7 pin of isolating converter IC1 are through the resistance R 3 of serial connection, capacitor C 10 and resistance R 6 in parallel, adjustable resistance P3 ground connection.
3, AC/DC isolation signals transmitter as claimed in claim 1, it is characterized in that: described signal amplification circuit is: the 4 foot meridian capacitor C6 ground connection of amplifier IC2, power supply VSS connects 1 pin and 5 pin of amplifier IC2 through adjustable resistance P1,7 pin of amplifier IC2 meet power vd D and through capacitor C 5 ground connection, 6 pin that 2 pin of amplifier IC2 and 3 pin all meet amplifier IC2 through capacitor C 11 and resistance R 5, the adjustable resistance P2 of parallel connection, 6 pin of amplifier IC2 connect 3 pin and 4 pin of IC3 in the real effective change-over circuit through adjustable resistance P4.
4, AC/DC isolation signals transmitter as claimed in claim 1, it is characterized in that: described real effective change-over circuit is: 3 pin of IC3 and 4 pin ground connection, be connected to the resistance R 16 and the adjustable resistance P5 of series connection between 1 pin and 2 pin, 1 pin of IC3,5 pin of IC3 meet power supply VSS and through capacitor C 17 ground connection, be connected to resistance R 8 between 9 pin of IC3 and 10 pin, 10 pin of IC3 are through capacitor C 13, the C15 ground connection of series connection, the 9 foot meridian capacitor C14 ground connection of IC3, the 8 foot meridian capacitor C15 ground connection of IC3 are also through resistance R 15 outputs.
5, AC/DC isolation signals transmitter as claimed in claim 1, it is characterized in that: described power circuit is: 1 pin of out connector CN2 is through diode in series D1, inductance L 1 out-put supply VDD; 2 pin of out connector CN2 are through diode in series D2, inductance L 2 out-put supply VSS; 1 pin of out connector CN2 is through diode in series D1, inductance L 1, capacitor C 4 ground connection, and 2 pin of out connector CN2 are through diode in series D2, inductance L 2, capacitor C 3 ground connection, 3 pin of out connector CN2 and 4 pin ground connection.
6, AC/DC isolation signals transmitter as claimed in claim 1, it is characterized in that: described insulating power supply circuit is: 10,12 pin of IC4 connect power supply VSS, 15 pin ground connection; 1 pin connects VSS by R13, and connect between 9 pin C19 and R12; 2 pin are connected the back and meet VSS by R14 with 16 pin; 3,4 pin are unsettled; 5 pin connect VSS by C21, and connect by R10 between 7 pin; 6 pin meet VSS by R11; 8 pin connect VSS by C20; 11,14 pin connect the former limit of isolating transformer T1; 13 pin connect VSS by C18, connect ground by R9; The ac input end that connects the full-wave bridge rectifier circuit that constitutes by D3, D4, D5, D6 behind the secondary shunt capacitance C23 of isolating transformer T1, dc output end electrochemical capacitor C22 in parallel, anodal 1 pin that connects IC6 of C22, negative pole connects 3 pin of IC6, the negative pole of C2, C24 as GND1,2 pin of IC6 connect the positive pole of C2, and connect the positive pole of C24 as VDD1, with the GND1 output isolated power supply by inductance L 3; The 3 pin ground connection of IC5,1 pin meets power vd D, is connected to C1 between 2 pin and 3 pin, 2 pin out-put supply VDD2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820014527XU CN201285598Y (en) | 2008-07-30 | 2008-07-30 | AC/DC isolation signal transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820014527XU CN201285598Y (en) | 2008-07-30 | 2008-07-30 | AC/DC isolation signal transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201285598Y true CN201285598Y (en) | 2009-08-05 |
Family
ID=40950581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820014527XU Expired - Fee Related CN201285598Y (en) | 2008-07-30 | 2008-07-30 | AC/DC isolation signal transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201285598Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882907A (en) * | 2010-07-23 | 2010-11-10 | 中国北车股份有限公司大连电力牵引研发中心 | Signal converting circuit for passive revolution speed sensor |
| CN104459266A (en) * | 2014-12-12 | 2015-03-25 | 重庆和平自动化工程股份有限公司 | Electric quantity isolation module circuit |
-
2008
- 2008-07-30 CN CNU200820014527XU patent/CN201285598Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882907A (en) * | 2010-07-23 | 2010-11-10 | 中国北车股份有限公司大连电力牵引研发中心 | Signal converting circuit for passive revolution speed sensor |
| CN104459266A (en) * | 2014-12-12 | 2015-03-25 | 重庆和平自动化工程股份有限公司 | Electric quantity isolation module circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090805 Termination date: 20110730 |