CN202841086U - Switching value input module - Google Patents
Switching value input module Download PDFInfo
- Publication number
- CN202841086U CN202841086U CN 201220519118 CN201220519118U CN202841086U CN 202841086 U CN202841086 U CN 202841086U CN 201220519118 CN201220519118 CN 201220519118 CN 201220519118 U CN201220519118 U CN 201220519118U CN 202841086 U CN202841086 U CN 202841086U
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- China
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- signal acquisition
- thyristor
- opto
- switching value
- input module
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Abstract
The utility model discloses a switching value input module which comprises signal acquisition circuits and an optocoupler chip, and the signal acquisition circuits are connected with the optocoupler chip. The signal acquisition circuits comprise four input units connected in parallel, and each input unit comprises two resistors and two thyristors, and the two resistors are connected in series and then connected to the optocoupler chip. A cathode of the first thyristor is connected to the optocoupler chip, and an anode of the first thyristor is connected with a power supply. A cathode of the second thyristor is connected between the two resistors in parallel, and an anode of the second thyristor is connected with the cathode of the first thyristor. An input end of any one series resistor of the four signal acquisition circuits is connected with a common end in a pup joint mode, and the common end is connected to a power supply. An output end of the optocoupler chip is connected with another power supply. The switching value input module is highly integrated in structure and high in intelligent level, and platforms capable of being applied by the switching value input module is quite many, for instance, the achievement of switching value signals in a digital meter, a microcomputer automation device and a programmable logic controller (PLC), and multi-signal acquisition requirements can be met.
Description
Technical field
The utility model relates to switching value input device.
Background technology
Detect the electric quantity signal of real-time change in the electric power system except needs, more need to gather the switching value input signal of non electrical quantity, the position signalling of circuit breaker for example, the status signal of reclosing, disconnecting link is with wireline inspection and the abort situation of accurate location electric power system.And some equipment operating electric currents the impact to control system is very large greatly, just need the amount of opening the light of fully isolation to export to control the break-make of such equipment.It is that the level of active outer signals could drive the variation that internal circuit produces switching signal that traditional switching value input signal collecting unit needs signal.On-the-spot signal type is fixed.Can not realize the collection of majority signal.
Summary of the invention
Technical problem to be solved in the utility model is, and is not enough for prior art, and a kind of switching input module is provided, and satisfies many signals collecting demand.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of switching input module, comprise signal acquisition circuit and opto-coupler chip, and described signal acquisition circuit is connected with opto-coupler chip; Described signal acquisition circuit comprises the input unit of four parallel connections, and described input unit comprises two resistance and two thyristors, access opto-coupler chip after described two resistance series connection; First thyristor negative electrode access opto-coupler chip, plus earth; Between two resistance of second thyristor negative electrode access in parallel, second thyristor anode is connected with first thyristor negative electrode; Arbitrary series resistance input and common port short circuit in described four signal acquisition circuits, described common port is connected to power supply; Described opto-coupler chip output is connected to power supply.
Compared with prior art, the beneficial effect that the utility model has is: the utility model circuit structure Highgrade integration, intelligent level is high, the applicable platform of the utility model is also very many, for example among digital instrument, microcomputer automatic device and the PLC for the realization of switching value signals collecting; Satisfy many signals collecting demand.
Description of drawings
Fig. 1 is the utility model one embodiment circuit theory diagrams.
Embodiment
As shown in Figure 1, the utility model one embodiment comprises signal acquisition circuit and opto-coupler chip, and described signal acquisition circuit is connected with opto-coupler chip; Described signal acquisition circuit comprises the input unit of four parallel connections, and described input unit comprises two resistance and two thyristors, access opto-coupler chip after described two resistance series connection; First thyristor negative electrode access opto-coupler chip, plus earth; Between two resistance of second thyristor negative electrode access in parallel, second thyristor anode is connected with first thyristor negative electrode; Arbitrary series resistance input and common port short circuit in described four signal acquisition circuits, described common port is connected to the 24V power supply; Described opto-coupler chip output is connected to the 3.3V power supply.
COM is common port, and the COM end is connected internally to the anode of inner 24V power supply.Among the S1-S4 any one tunnel and COM end short circuit forms the 24V loop, respective channel conducting among the opto-coupler chip PS2501-4, and optocoupler is secondary then to be produced once high to Low level by the high level of default conditions and changes, and realizes the function of switching value signals collecting.
With passive dry contact through the 24V level through the break-make of electric resistance partial pressure to optocoupler control optocoupler, the optocoupler output stage connects draws the output useful signal to produce a variation level in the 3.3V system to realize the switching value input.
Claims (2)
1. a switching input module comprises signal acquisition circuit and opto-coupler chip, it is characterized in that, described signal acquisition circuit is connected with opto-coupler chip; Described signal acquisition circuit comprises the input unit of four parallel connections, and described input unit comprises two resistance and two thyristors, access opto-coupler chip after described two resistance series connection; First thyristor negative electrode access opto-coupler chip, plus earth; Between two resistance of second thyristor negative electrode access in parallel, second thyristor anode is connected with first thyristor negative electrode; Arbitrary series resistance input and common port short circuit in described four signal acquisition circuits, described common port is connected to power supply; Described opto-coupler chip output is connected to power supply.
2. switching input module according to claim 1 is characterized in that, described opto-coupler chip model is PS2501-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220519118 CN202841086U (en) | 2012-10-11 | 2012-10-11 | Switching value input module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220519118 CN202841086U (en) | 2012-10-11 | 2012-10-11 | Switching value input module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202841086U true CN202841086U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220519118 Expired - Lifetime CN202841086U (en) | 2012-10-11 | 2012-10-11 | Switching value input module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202841086U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041890A1 (en) * | 2020-08-24 | 2022-03-03 | 南京磐能电力科技股份有限公司 | Switching value acquisition circuit and method |
-
2012
- 2012-10-11 CN CN 201220519118 patent/CN202841086U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041890A1 (en) * | 2020-08-24 | 2022-03-03 | 南京磐能电力科技股份有限公司 | Switching value acquisition circuit and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |