CN104753521A - Digital signal isolating module - Google Patents
Digital signal isolating module Download PDFInfo
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- CN104753521A CN104753521A CN201510180142.5A CN201510180142A CN104753521A CN 104753521 A CN104753521 A CN 104753521A CN 201510180142 A CN201510180142 A CN 201510180142A CN 104753521 A CN104753521 A CN 104753521A
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- limiting resistance
- current limiting
- limiting resistor
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Abstract
The invention discloses a digital signal isolating module. The digital signal isolating module comprises a signal inputting end and a signal outputting end, wherein the signal outputting end comprises a power positive terminal signal end and a power negative terminal signal end; the signal inputting end is connected with a first current limiting resistor; the current limiting resistor is connected with an optocoupler inputting end; an optocoupler outputting end is connected with one end of a second current limiting resistor, one end of a third current limiting resistor, one end of a fourth current limiting resistor and the power negative terminal signal end; the second current limiting resistor is in parallel connection with the third current limiting resistor and a fifth current limiting resistor; the third current limiting resistor is serially connected with a jumper wire 1/2 port; the other end of a fourth current limiting resistor and the fifth current limiting resistor are connected with the triode; the fourth current limiting resistor, the fifth current limiting resistor and the diode form a phase-inverter circuit; and the triode is connected with a jumper wire 3/4 port. The digital signal isolating module has the following advantages that the number of used elements is small, a special-purpose IC (integrated circuit) is not required, and the digital signal isolating module is quite practical when used for emergency repair.
Description
Technical field
The present invention relates to ship electronic technical field, specifically, relate to a kind of digital signal isolation module.
Background technology
Certain signal of ship's navigation equipment can be forced requirement and receive in other navigational equipment or admittance equipment.Particularly in maintenance of the vessel process, the equipment that ship is changed and original be not same producer model, or have new ship specification requirement, some ship's navigation equipment must be connected to the signal of certain particular device.And the signal port of input equipment and output equipment is all have source interface to mate, signal power source isolation module must be used.
Summary of the invention
Object of the present invention, is to overcome above-mentioned limitation, thus provides a kind of element that adopts few, and without the need to application-specific integrated circuit, structure is simple, the digital signal isolation module very practical to rush repair.
Object of the present invention is achieved through the following technical solutions: a kind of digital signal isolation module, comprise signal input part and signal output part, signal output part comprises power positive end signal end and power supply negative terminal signal end, signal input part is connected with the first current-limiting resistance, first current-limiting resistance is connected with optocoupler input, one end of optocoupler output and the second current-limiting resistance, one end of 3rd current-limiting resistance, one end of 4th current-limiting resistance is connected with power supply negative terminal signal end, second current-limiting resistance is in parallel with the 3rd current-limiting resistance and the 5th current-limiting resistance, 3rd current-limiting resistance is connected with jumper 1/2 mouthful, the other end of the 4th current-limiting resistance is connected with triode with the 5th current-limiting resistance, 4th current-limiting resistance, 5th current-limiting resistance and triode composition negative circuit, triode is connected with jumper 3/4 mouthful.
Preferably, the first current-limiting resistance is 680 Ω.
Preferably, the 3rd current-limiting resistance is 100 Ω-300 Ω.
Preferably, the 4th current-limiting resistance is 2.2K Ω-10K Ω.
Preferably, the 3rd current-limiting resistance is 200 Ω.
Preferably, the 4th current-limiting resistance is 2.2K Ω.
Preferably, the 4th current-limiting resistance is 10K Ω.
In sum, the present invention has the following advantages: adopt element few, and without the need to application-specific integrated circuit, structure is simple, very practical to rush repair.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present invention;
Number in the figure: R1-first current-limiting resistance, R2-second current-limiting resistance, R3-the 3rd current-limiting resistance, R4-the 4th current-limiting resistance, R5-the 5th current-limiting resistance, OC-optocoupler, J1-jumper, Q1-triode.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only for explaining the present invention, does not form limiting the scope of the present invention.
A kind of digital signal isolation module as shown in Figure 1, comprise signal input part and signal output part, signal output part comprises power positive end signal end and power supply negative terminal signal end, signal input part is connected with the first current-limiting resistance R1, first current-limiting resistance R1 is connected with optocoupler OC input, one end of optocoupler OC output and the second current-limiting resistance R2, one end of 3rd current-limiting resistance R3, one end of 4th current-limiting resistance R4 is connected with power supply negative terminal signal end, second current-limiting resistance R2 is in parallel with the 3rd current-limiting resistance R3 and the 5th current-limiting resistance R5, connect for 1/2 mouthful of 3rd current-limiting resistance R3 and jumper J1, the other end of the 4th current-limiting resistance R4 is connected with triode Q1 with the 5th current-limiting resistance R5, 4th current-limiting resistance R4, 5th current-limiting resistance R5 and triode Q1 forms negative circuit, 3/4 mouthful of triode Q1 and jumper J1 is connected.
This device adopts optoelectronic isolating element to be kept apart by the device power supply (DPS) that two kinds need digital communication to connect, active signal is equivalent to be transformed into passive signal, just signal directly can be received another active signal input port (equipment), realize two direct communications of equipment.As Fig. 1, by a digital pulse signal, be linked in the navigational equipment of an active port: first, signal delivers to optocoupler OC input through R1 current limliting, R1 is 680 Ω, produce make-and-break signal at the output of optocoupler OC, again make-and-break signal is become electric impulse signal by the power supply of receiving equipment and export.In figure, R2, R3 play metering function, need choose according to the semaphore request of receiving equipment, should not be too large, and R3 is 100 Ω-300 Ω.R4, R5, Q1 form a negative circuit, and R4 is 2.2K Ω-10K Ω, if receiving equipment communication port is signal input part and public end (0V) configuration, need to add negative circuit, and ensure input, output signal homophase, jumper J1 connects 3-4 hole.If receiving equipment communication port is power positive end and signal input part configuration, then J1 disconnects jumper 3-4 hole, and connect 1-2 hole, negative circuit is inoperative, is exported by the direct control signal of optocoupler.Can ensure that device signal end is synchronous with original signal like this.Solve digital signal and be input to difficulty in the equipment of active PORT COM.
Embodiment: the 3rd current-limiting resistance is 200 Ω.
Embodiment: the 4th current-limiting resistance is 2.2K Ω.
Embodiment: the 4th current-limiting resistance is 10K Ω.
Claims (7)
1. a digital signal isolation module, comprise signal input part and signal output part, it is characterized in that: described signal output part comprises power positive end signal end and power supply negative terminal signal end, signal input part is connected with the first current-limiting resistance (R1), first current-limiting resistance (R1) is connected with optocoupler (OC) input, one end of optocoupler (OC) output and the second current-limiting resistance (R2), one end of 3rd current-limiting resistance (R3), one end of 4th current-limiting resistance (R4) is connected with power supply negative terminal signal end, described second current-limiting resistance (R2) is in parallel with the 3rd current-limiting resistance (R3) and the 5th current-limiting resistance (R5), described 3rd current-limiting resistance (R3) is connected with jumper (J1) 1/2 mouthful, the other end of described 4th current-limiting resistance (R4) is connected with triode (Q1) with the 5th current-limiting resistance (R5), described 4th current-limiting resistance (R4), 5th current-limiting resistance (R5) and triode (Q1) form negative circuit, described triode (Q1) is connected with jumper (J1) 3/4 mouthful.
2. a kind of digital signal isolation module according to claim 1, is characterized in that: described first current-limiting resistance (R1) is 680 Ω.
3. a kind of digital signal isolation module according to claim 1, is characterized in that: described 3rd current-limiting resistance (R3) is 100 Ω-300 Ω.
4. a kind of digital signal isolation module according to claim 1, is characterized in that: described 4th current-limiting resistance (R4) is 2.2K Ω-10K Ω.
5. a kind of digital signal isolation module according to claim 1, is characterized in that: described 3rd current-limiting resistance (R3) is 200 Ω.
6. a kind of digital signal isolation module according to claim 1, is characterized in that: described 4th current-limiting resistance (R4) is 2.2K Ω.
7. a kind of digital signal isolation module according to claim 1, is characterized in that: described 4th current-limiting resistance (R4) is 10K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510180142.5A CN104753521A (en) | 2015-04-16 | 2015-04-16 | Digital signal isolating module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510180142.5A CN104753521A (en) | 2015-04-16 | 2015-04-16 | Digital signal isolating module |
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| Publication Number | Publication Date |
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| CN104753521A true CN104753521A (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510180142.5A Pending CN104753521A (en) | 2015-04-16 | 2015-04-16 | Digital signal isolating module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559932A (en) * | 2015-09-28 | 2017-04-05 | 李顺华 | A kind of drive circuit of ballast formula LED |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104516388A (en) * | 2014-12-16 | 2015-04-15 | 珠海格力电器股份有限公司 | Communication circuit self-adaptive to power supply and air-conditioner |
| CN204442341U (en) * | 2015-04-16 | 2015-07-01 | 南通中远船务自动化有限公司 | Digital signal isolation module |
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2015
- 2015-04-16 CN CN201510180142.5A patent/CN104753521A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104516388A (en) * | 2014-12-16 | 2015-04-15 | 珠海格力电器股份有限公司 | Communication circuit self-adaptive to power supply and air-conditioner |
| CN204442341U (en) * | 2015-04-16 | 2015-07-01 | 南通中远船务自动化有限公司 | Digital signal isolation module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559932A (en) * | 2015-09-28 | 2017-04-05 | 李顺华 | A kind of drive circuit of ballast formula LED |
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Application publication date: 20150701 |