CN205670173U - Multichannel disconnecting switch amount detecting device - Google Patents
Multichannel disconnecting switch amount detecting device Download PDFInfo
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- CN205670173U CN205670173U CN201620547214.5U CN201620547214U CN205670173U CN 205670173 U CN205670173 U CN 205670173U CN 201620547214 U CN201620547214 U CN 201620547214U CN 205670173 U CN205670173 U CN 205670173U
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- multichannel
- detecting device
- amount detecting
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Abstract
The open a kind of multichannel disconnecting switch amount detecting device of this utility model.It is made up of the input block of at least 16 passages and the processing unit that processes described input block signal, and wherein said input block includes current-limiting circuit and optical coupling isolation circuit；Wherein, the outfan of described current-limiting circuit is connected with the input of optical coupling isolation circuit；The outfan of described optical coupling isolation circuit is connected with an input of processing unit.Use this utility model of technique scheme, during for the switching value of different electric pressures, only need to change the resistance of current-limiting resistance, device will not be damaged because input voltage is too high；Even if external signal connects instead, owing to the existence of diode is it is also ensured that device is not damaged by.
Description
Technical field
This utility model relates to a kind of multichannel disconnecting switch amount detecting device.
Background technology
A large amount of situations occurring using switching values in industry, as checked, whether workpiece moves put in place with or without, object,
These signals all may be considered switching value.It is true that having a lot of control in industry is not complicated analog quantity or numeral
Amount signal, but simple switching value, how instruction system operates.
At present, industry-by-industry is required for switching value, but most switching value detection device is typically port number
Less, electric pressure is single and major part does not all have isolation features.
Utility model content
For overcoming drawbacks described above, the purpose of this utility model is that providing one to possess isolation features is suitable for different voltage
The multichannel disconnecting switch amount detecting device of grade.
For reaching above-mentioned purpose, this utility model multichannel disconnecting switch amount detecting device, defeated by least 16 passages
Entering unit and the processing unit composition processing described input block signal, wherein said input block includes limit
Current circuit and optical coupling isolation circuit；Wherein, the outfan of described current-limiting circuit is connected with the input of optical coupling isolation circuit；
The outfan of described optical coupling isolation circuit is connected with an input of processing unit.
Preferably, described current-limiting circuit is made up of the diode being connected in series and current-limiting resistance, wherein, and two described poles
The most extremely signal input part of pipe, the negative pole of described diode is connected with one end of current-limiting resistance, described current-limiting resistance
The other end is outfan.
Preferably, also include a communication unit, be used for the data after processing unit processes to have letter or wireless mode defeated
Go out.
Preferably, described wireless mode includes the one in bluetooth, WIFI, infrared ray and GSM.
Preferably, described optical coupling isolation circuit is made up of TLP281 integrated circuit.
Preferably, between described current-limiting circuit and optical coupling isolation circuit, over-voltage over-current protection circuit also it is in series with；Its
Described in over-voltage over-current protection circuit be made up of Zener diode and critesistor.
Use this utility model of technique scheme, during for the switching value of different electric pressures, only need to change
The resistance of current-limiting resistance, will not damage device because input voltage is too high；Even if external signal connects instead, due to depositing of diode
It is also ensured that device is not damaged by.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of this utility model multichannel disconnecting switch amount detecting device.
Fig. 2 is this utility model one embodiment circuit diagram.
Detailed description of the invention
Being described principle of the present utility model and feature below in conjunction with drawings and Examples, example is served only for solving
Release this utility model, be not intended to limit scope of the present utility model.
As it is shown in figure 1, be the structured flowchart of a kind of multichannel disconnecting switch amount detecting device described in the utility model, bag
Include: input block and the processing unit composition that described input block signal is processed, wherein said input block
Including current-limiting circuit 1 and optical coupling isolation circuit 2；Wherein, the outfan of described current-limiting circuit 1 is defeated with optical coupling isolation circuit 2
Enter end to be connected；The outfan of described optical coupling isolation circuit 2 is connected with an input of processing unit 3.
In such scheme, only can need to change current-limiting resistance during detection for the switching value of different electric pressures
Resistance, will not damage device because input voltage is too high；
It is also preferred that the left above-mentioned current-limiting circuit is made up of the diode being connected in series and current-limiting resistance, wherein, two described poles
The most extremely signal input part of pipe, the negative pole of described diode is connected with one end of current-limiting resistance, described current-limiting resistance
The other end is outfan.After current-limiting circuit has diode, even if external signal connects instead, owing to the existence of diode can also
Ensure that device is not damaged by.
It is also preferred that the left also include a communication unit, it is used for the data after processing unit processes to have letter or wireless mode defeated
Go out.Described wireless mode includes the one in bluetooth, WIFI, infrared ray and GSM.Increase communication unit, can be as required
Switching value is transferred out.
It is also preferred that the left be also in series with over-voltage over-current protection circuit between described current-limiting circuit and optical coupling isolation circuit；Its
Described in over-voltage over-current protection circuit be made up of Zener diode and critesistor.
As in figure 2 it is shown, be the partial circuit schematic diagram of this utility model one embodiment, wherein signal terminal, current limliting
Circuit, quantity Dou Wei 16 tunnel of optical coupling isolation circuit.In the present embodiment optical coupling isolation circuit be model be the four-way of TLP281
Opto-coupler chip.
Its operation principle is as follows:
Voltage signal is by entering optocoupler input after diode and current-limiting resistance, optocoupler outfan is connected to monolithic
Machine, it is high level that acquiescence links the signal of single-chip microcomputer, and once external voltage signal accesses, then optocoupler conducting, and optocoupler outfan is led
Leading to makes the signal being connected to single-chip microcomputer become low level, if external voltage signal disappears or is reduced to be not enough to optocoupler input
Turn on then optocoupler outfan to disconnect, make the signal being connected to single-chip microcomputer become high level, thus realize the detection of on-off model.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in guarantor of the present utility model
Within the scope of protecting.
Claims (6)
1. a multichannel disconnecting switch amount detecting device, it is characterised in that described detection device is by least 16 passages
Input block and the processing unit composition processing described input block signal, wherein said input block includes
Current-limiting circuit and optical coupling isolation circuit；Wherein, the outfan of described current-limiting circuit is connected with the input of optical coupling isolation circuit
Connect；The outfan of described optical coupling isolation circuit is connected with an input of processing unit.
2. multichannel disconnecting switch amount detecting device as claimed in claim 1, it is characterised in that described current-limiting circuit is by going here and there
Diode and current-limiting resistance that connection connects form, wherein, the most extremely signal input part of described diode, described diode
Negative pole be connected with one end of current-limiting resistance, the other end of described current-limiting resistance is outfan.
3. multichannel disconnecting switch amount detecting device as claimed in claim 1, it is characterised in that also include a communication unit,
For by the data after processing unit processes with have letter or wireless mode output.
4. multichannel disconnecting switch amount detecting device as claimed in claim 3, it is characterised in that described wireless mode includes
One in bluetooth, WIFI, infrared ray and GSM.
5. multichannel disconnecting switch amount detecting device as claimed in claim 1, it is characterised in that described optical coupling isolation circuit
It is made up of TLP281 integrated circuit.
6. multichannel disconnecting switch amount detecting device as claimed in claim 1, it is characterised in that in described current-limiting circuit and
Over-voltage over-current protection circuit also it is in series with between optical coupling isolation circuit；Wherein said over-voltage over-current protection circuit is by voltage stabilizing two pole
Pipe and critesistor form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620547214.5U CN205670173U (en) | 2016-06-01 | 2016-06-01 | Multichannel disconnecting switch amount detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620547214.5U CN205670173U (en) | 2016-06-01 | 2016-06-01 | Multichannel disconnecting switch amount detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205670173U true CN205670173U (en) | 2016-11-02 |
Family
ID=57191543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620547214.5U Active CN205670173U (en) | 2016-06-01 | 2016-06-01 | Multichannel disconnecting switch amount detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205670173U (en) |
-
2016
- 2016-06-01 CN CN201620547214.5U patent/CN205670173U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |