CN103794042A - Sensor signal transmission module - Google Patents
Sensor signal transmission module Download PDFInfo
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- CN103794042A CN103794042A CN201410034634.9A CN201410034634A CN103794042A CN 103794042 A CN103794042 A CN 103794042A CN 201410034634 A CN201410034634 A CN 201410034634A CN 103794042 A CN103794042 A CN 103794042A
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- resistance
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- sensor signal
- photoelectrical coupler
- signal transmission
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Abstract
The invention discloses a sensor signal transmission module. The sensor signal transmission module comprises a plurality of same signal transmission circuits, wherein each signal transmission circuit comprises three resistors, two capacitors, a diode, a photoelectrical coupler and a trigger. The sensor signal transmission module provided by the invention insulates sensor signal input and output by the photoelectrical coupler, is high in disturbance rejection, is complete in protection, and extremely improves the sensor signal transmission stability; finally, a Schmitt trigger reshapes received signals, and guarantees that the wave forms are standard TTL (transistor-transistor logic) level.
Description
Technical field
the present invention relates to field of signal transmissions, specifically a kind of sensor signal transport module.
Background technology
Indoor energy efficiency management terminal is a kind of office terminal of the household electrical appliances such as room conditioning fan coil and indoor lamp being carried out to Based Intelligent Control of realizing, it is made up of control module and guidance panel, control module comprises CPU, communication module, the modules such as lighting control module and electrical quantity acquisition module, guidance panel comprises display module, key-press module etc., it meets the theory of energy-conserving and environment-protective, realize the saving of room electricity consumption, this terminal can be according to the signal of external sensor to indoor air exchange system central air conditioning fan coil unit, lighting loops etc. are processed, but sensor signal is easily subject to the impact of indoor electromagnetic product etc. in transmitting procedure, jitter, poor anti jamming capability.
Summary of the invention
The shortcoming existing in order to overcome above-mentioned prior art, the object of the present invention is to provide a kind of steady signal transmission, the sensor signal transport module that antijamming capability is strong.
In order to address the above problem, the present invention is by the following technical solutions: a kind of sensor signal transport module, it is characterized in that, it comprises the signal circuit that several are identical, each signal circuit comprises three resistance, two electric capacity, a diode, a photoelectrical coupler and a trigger, a resistance in parallel between each signal circuit power input INCOM and signal input part INPUT, after an electric capacity and a diode, power input INCOM is connected on the pin 1 of described photoelectrical coupler, signal input part INPUT is connected on the pin 2 of described photoelectrical coupler, the pin 4 of described photoelectrical coupler is received the input end of described trigger, connects supply voltage after drawing a resistance on pin 4, pin 3 ground connection of described photoelectrical coupler, and pin 3 is connected with pin 4 after being connected in series an electric capacity, described signal input part INPUT is connected in series a resistance.
Preferably, described trigger is CD4093 Schmidt trigger.
Preferably, the resistance of described signal input part INPUT serial connection is the resistance that paster 2010 encapsulates, and resistance is 2 kilohms; A resistance in parallel between power input INCOM and signal input part INPUT is the resistance that paster 0805 encapsulates, and resistance is 2 kilohms.
The invention has the beneficial effects as follows: it has realized the isolation of sensor signal input, output by photoelectrical coupler; disturbance rejection is stronger; protect complete; greatly improve the stability that sensor signal is transmitted; finally; Schmidt trigger carries out shaping the signal receiving, and has guaranteed the Transistor-Transistor Logic level that waveform is standard.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the present invention is described further:
Fig. 1 is circuit diagram of the present invention.
Embodiment
As shown in Figure 1, in one embodiment of this invention, this sensor signal transport module comprises 3 identical signal circuits, below Yi Yi road circuit be that example is introduced, in other two circuit shown in Fig. 1, the parameter of all components and parts is identical with function Jun Yugai road circuit.
Between power input INCOM and signal input part INPUT after an in parallel resistance R 85, a capacitor C 27 and a diode D4, power input INCOM is connected on the pin 1 of photoelectrical coupler U35, and signal input part INPUT is connected on the pin 2 of photoelectrical coupler U35; The pin 4 of photoelectrical coupler U35 is signal isolation output terminal, it receives the input end of Schmidt trigger U11C, on meet supply voltage 3.3V after drawing a resistance R 104, the pin 3 of photoelectrical coupler U35 is connected in series pin 4 signal output parts of capacitor C connection after 90s U35, pin 3 ground connection of described photoelectrical coupler U35; Signal input part INPUT is connected in series a resistance R 27; External input power+12V after the power input INCOM of 3 same signal transmission circuits is connected.
In this circuit, input signal meets signal input part INPUTOO, R72 is the resistance that paster 2010 encapsulates, its resistance is 2K ohm, this resistance is current limliting dropping resistor, and R85 is the resistance that paster 0805 encapsulates, and its resistance is 2K ohm, this resistance role is divider resistance, in order to guarantee that the voltage of photoelectrical coupler U35 pin 1 and pin 2 keeps stable.C27 is filter capacitor.D4 is diode, the reverse voltage at protection photoelectrical coupler U35 two ends.Photoelectrical coupler U35 is preferably TLP181 photoelectrical coupler, and its effect is to transmit input signal, once there be input signal, light emitting diode conducting in photoelectrical coupler U35, at this moment pin 3 and pin 4 conductings, R104 is pull-up resistor, guarantees the fan-out capability of pin 3.C90 is secondary filter capacitor, eliminates the abnormal signal that photoelectrical coupler U35 passes over.U11 is that Schmidt trigger CD4093. carries out shaping the signal of accepting, and guarantees that waveform is the Transistor-Transistor Logic level of standard.
The above is the preferred embodiment of the present invention, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, and these improvements and modifications are also regarded as protection scope of the present invention.
Claims (3)
1. a sensor signal transport module, it is characterized in that, it comprises the signal circuit that several are identical, each signal circuit comprises three resistance, two electric capacity, a diode, a photoelectrical coupler and a trigger, between the power input INCOM of this circuit and signal input part INPUT after a resistance in parallel, an electric capacity and a diode, power input INCOM is connected on the pin 1 of described photoelectrical coupler, and signal input part INPUT is connected on the pin 2 of described photoelectrical coupler; The pin 4 of described photoelectrical coupler is received the input end of described trigger, connects supply voltage after drawing a resistance on pin 4, pin 3 ground connection of photoelectrical coupler, and pin 3 is connected with pin 4 after being connected in series an electric capacity; Described signal input part INPUT is connected in series a resistance.
2. sensor signal transport module according to claim 1, is characterized in that, described trigger is CD4093 Schmidt trigger.
3. sensor signal transport module according to claim 1, is characterized in that, the resistance of described signal input part INPUT serial connection is the resistance that paster 2010 encapsulates, and resistance is 2 kilohms; A resistance in parallel between power input INCOM and signal input part INPUT is the resistance that paster 0805 encapsulates, and resistance is 2 kilohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410034634.9A CN103794042A (en) | 2014-01-25 | 2014-01-25 | Sensor signal transmission module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410034634.9A CN103794042A (en) | 2014-01-25 | 2014-01-25 | Sensor signal transmission module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103794042A true CN103794042A (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410034634.9A Pending CN103794042A (en) | 2014-01-25 | 2014-01-25 | Sensor signal transmission module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442815A (en) * | 2019-01-17 | 2020-07-24 | 上海树诚实业有限公司 | Wide-range isotope liquid level detection synthetic circuit |
Citations (6)
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|---|---|---|---|---|
| JP3663576B2 (en) * | 1999-06-14 | 2005-06-22 | デンセイ・ラムダ株式会社 | Battery charge voltage temperature correction circuit |
| CN101034492A (en) * | 2006-03-07 | 2007-09-12 | 李荣泰 | Photoisolator and manufacturing method thereof |
| CN102231061A (en) * | 2011-05-23 | 2011-11-02 | 南车株洲电力机车有限公司 | Information control unit used in TAD type series dryers |
| CN102628875A (en) * | 2012-05-10 | 2012-08-08 | 长沙全程数字机电科技有限公司 | Rotating speed monitoring instrument |
| CN102661711A (en) * | 2012-04-28 | 2012-09-12 | 广东日丰电缆股份有限公司 | Non-contact cable length measuring system based on LabVIEW platform |
| CN203673654U (en) * | 2014-01-25 | 2014-06-25 | 济南诺辉节能技术开发有限公司 | Sensor signal transmission module |
-
2014
- 2014-01-25 CN CN201410034634.9A patent/CN103794042A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3663576B2 (en) * | 1999-06-14 | 2005-06-22 | デンセイ・ラムダ株式会社 | Battery charge voltage temperature correction circuit |
| CN101034492A (en) * | 2006-03-07 | 2007-09-12 | 李荣泰 | Photoisolator and manufacturing method thereof |
| CN102231061A (en) * | 2011-05-23 | 2011-11-02 | 南车株洲电力机车有限公司 | Information control unit used in TAD type series dryers |
| CN102661711A (en) * | 2012-04-28 | 2012-09-12 | 广东日丰电缆股份有限公司 | Non-contact cable length measuring system based on LabVIEW platform |
| CN102628875A (en) * | 2012-05-10 | 2012-08-08 | 长沙全程数字机电科技有限公司 | Rotating speed monitoring instrument |
| CN203673654U (en) * | 2014-01-25 | 2014-06-25 | 济南诺辉节能技术开发有限公司 | Sensor signal transmission module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442815A (en) * | 2019-01-17 | 2020-07-24 | 上海树诚实业有限公司 | Wide-range isotope liquid level detection synthetic circuit |
| CN111442815B (en) * | 2019-01-17 | 2023-12-01 | 上海树诚实业有限公司 | Wide-range isotope liquid level detection synthetic circuit |
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Application publication date: 20140514 |