CN204065777U - Signaling conversion circuit and testing circuit - Google Patents
Signaling conversion circuit and testing circuit Download PDFInfo
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- CN204065777U CN204065777U CN201420485683.XU CN201420485683U CN204065777U CN 204065777 U CN204065777 U CN 204065777U CN 201420485683 U CN201420485683 U CN 201420485683U CN 204065777 U CN204065777 U CN 204065777U
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- signaling conversion
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Abstract
The utility model discloses a kind of signaling conversion circuit and testing circuit.Wherein, signaling conversion circuit comprises: the first Boolean value output sensor, and wherein, described first Boolean value output sensor is NPN type Boolean value output sensor; And change-over circuit, be connected with described first Boolean value output sensor, for the output signal of described first Boolean value output sensor being converted to the output signal of second switch quantity sensor, wherein, described second switch quantity sensor is positive-negative-positive Boolean value output sensor.By the utility model, solve the type selecting of PLC in prior art and be limited to the problem of the sensor switching value way of output, and then reach the effect of the type selecting mode improving PLC.
Description
Technical field
The utility model relates to electronic circuit field, in particular to a kind of signaling conversion circuit and testing circuit.
Background technology
In automation control area, switching value type sensor often will be adopted to detect the various phenomenons occurred in industrial production environment, such as metal detection, color detection, proximity test etc., these sensor great majority are all the modes adopting on-off model to export.The output type of on-off model is divided into two kinds, and one is the NPN type on-off model way of output, and time NPN type sensor is failure to actuate, acquiescence exports as high level, exports as low level during action.One is the positive-negative-positive on-off model way of output, just contrary with the action phenomenon of NPN type signal, that is, when being failure to actuate, acquiescence exports as low level, exports as high level when action.The input pin that output signal for gathering these sensors carries out the PLC (programmable logic controller (PLC)) of corresponding control often can only identify a kind of way of output of switching value type signal, make to carry out type selecting according to the way of output of the on-off model of corresponding existing sensor when using PLC (programmable logic controller (PLC)), occur not mate on identifying with the input pin avoiding the way of output of the on-off model of existing sensor and the output signal gathering these sensors to carry out the PLC (programmable logic controller (PLC)) of corresponding control, this can only carry out PLC type selecting according to the way of output of sensor switching value with regard to causing in prior art.
Be limited to the problem of the sensor switching value way of output for the type selecting of PLC in correlation technique, not yet propose effective solution at present.
Utility model content
Fundamental purpose of the present utility model is to provide a kind of signaling conversion circuit and testing circuit, is limited to the problem of the sensor switching value way of output to solve the type selecting of PLC in prior art.
According to an aspect of the present utility model, provide a kind of signaling conversion circuit.
Comprise according to signaling conversion circuit of the present utility model: the first Boolean value output sensor, wherein, described first Boolean value output sensor is NPN type Boolean value output sensor; And change-over circuit, be connected with described first Boolean value output sensor, for the output signal of described first Boolean value output sensor being converted to the output signal of second switch quantity sensor, wherein, described second switch quantity sensor is positive-negative-positive Boolean value output sensor.
Further, described change-over circuit comprises: the first resistance; Direct supply; Triode, base stage is connected to the output terminal of described first Boolean value output sensor by described first resistance, and emitter is connected with described direct supply, and collector is for exporting the output signal of described second switch quantity sensor; And second resistance, between the collector being connected to described triode and signal ground.
Further, described triode is PNP triode.
Further, the output voltage of described direct supply is 12V to 24V.
According to another aspect of the present utility model, provide a kind of testing circuit.
Comprise according to testing circuit of the present utility model: NPN type Boolean value output sensor; Signaling conversion circuit, is connected with described NPN type Boolean value output sensor, wherein, and any one signaling conversion circuit that described signaling conversion circuit provides for the utility model foregoing; And programmable logic controller (PLC), be connected with the output signal end of the second switch quantity sensor of described signaling conversion circuit.
In the utility model, adopt the signaling conversion circuit with following structure: the first Boolean value output sensor, wherein, described first Boolean value output sensor is NPN type Boolean value output sensor; And change-over circuit, be connected with described first Boolean value output sensor, for the output signal of described first Boolean value output sensor being converted to the output signal of second switch quantity sensor, wherein, described second switch quantity sensor is positive-negative-positive Boolean value output sensor.By arranging change-over circuit, and utilize change-over circuit that the output signal of the first Boolean value output sensor is converted to the output signal of second switch quantity sensor, achieve under programmable logic controller (PLC) and the unmatched situation of the first Boolean value output sensor, the coupling that can ensure therebetween by signaling conversion circuit, make to carry out unique selection without the need to the way of output according to sensor switching value to the model of PLC, solve the type selecting of PLC in prior art and be limited to the problem of the sensor switching value way of output, and then reach the effect of the type selecting mode improving PLC.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the signaling conversion circuit according to the utility model embodiment; And
Fig. 2 is the circuit diagram of change-over circuit in the signaling conversion circuit according to the utility model embodiment.
Embodiment
According to the utility model embodiment, provide a kind of signaling conversion circuit, the signaling conversion circuit provided the utility model embodiment below does concrete introduction:
Fig. 1 is the schematic diagram of the signaling conversion circuit according to the utility model embodiment, and as shown in Figure 1, this signaling conversion circuit mainly comprises the first Boolean value output sensor 10 and change-over circuit 20, wherein:
First Boolean value output sensor 10 is NPN type Boolean value output sensor, change-over circuit 20 is connected with the first Boolean value output sensor 10, for the output signal of the first Boolean value output sensor 10 being converted to the output signal of second switch quantity sensor, wherein, second switch quantity sensor is positive-negative-positive Boolean value output sensor, and the first Boolean value output sensor 10 is not identical with second switch quantity sensor.Particularly, in the utility model embodiment, the first Boolean value output sensor 10 can be NPN type Boolean value output sensor, and second switch quantity sensor can be positive-negative-positive Boolean value output sensor.
The principle of work of the signaling conversion circuit that the utility model embodiment provides is as follows:
Time first Boolean value output sensor 10 is failure to actuate, output is defaulted as high level signal, then by this Signal transmissions to change-over circuit 20, change-over circuit 20 converts thereof into low level, thus corresponding be low level becoming after change-over circuit 20 under the default situations when being failure to actuate, exporting when the first Boolean value output sensor 10 action time is low level, and this low level signal becomes high level after being transferred to change-over circuit 20.Just meeting second switch quantity sensor when acquiescence is failure to actuate is low level, is the electrical specification of high level, thus well achieves function NPN signal being converted to PNP signal when action.Finally the output signal after conversion is transferred to the input pin that can only identify positive-negative-positive on-off model of PLC (programmable logic controller (PLC)).
The signaling conversion circuit that the utility model embodiment provides, by arranging change-over circuit, and utilize change-over circuit that the output signal of the first Boolean value output sensor is converted to the output signal of second switch quantity sensor, achieve under programmable logic controller (PLC) and the unmatched situation of the first Boolean value output sensor, the coupling that can ensure therebetween by signaling conversion circuit, make to carry out unique selection without the need to the way of output according to sensor switching value to the model of PLC, solve the type selecting of PLC in prior art and be limited to the problem of the sensor switching value way of output, and then reach the effect of the type selecting mode improving PLC.
Fig. 2 is the circuit diagram of change-over circuit in the signaling conversion circuit according to the utility model embodiment, as shown in Figure 2, for the situation that the first Boolean value output sensor 10 is NPN type Boolean value output sensor, change-over circuit 20 mainly comprises the first resistance R1, direct supply VCC, triode VT1 and the second resistance R2, wherein: the base stage of triode VT1 is connected to the output terminal of the first Boolean value output sensor 10 by the first resistance R1, emitter is connected with direct supply VCC, the level of this direct supply VCC can use as the output high level of PNP triode change-over circuit, collector is for exporting the output signal of second switch quantity sensor, second resistance R2, between the collector being connected to triode VT1 and signal ground.Wherein, triode VT1 can be the general triode of positive-negative-positive of 9012.
The principle of work of this change-over circuit is:
When NPN type sensor is failure to actuate time, the output of NPN type sensor is defaulted as high level signal, then the output signal (specifically seeing the NPN_IN place marked in Fig. 2) of this NPN type sensor is transferred to PNP triode change-over circuit, the level now received due to NPN_IN place is the high level of the output from NPN type sensor, thus the PN junction between PNP triode base stage and emitter ends, make whole PNP triode circuit working in cut-off state, thus make the output signal place of PNP triode change-over circuit (specifically seeing the PNP_OUT place marked in Fig. 2) export as low level, this low level level is consistent with the level with reference to ground.
Exporting when NPN type sensor actuation time is low level, this low level signal transmission (specifically seeing the NPN_IN place marked in Fig. 2) is to PNP triode change-over circuit, level due to NPN_IN place is now low level, thus the PN junction conducting between PNP triode base stage and emitter, make direct supply VCC and the PN junction between PNP triode base stage and emitter, resistance R1 and NPN_IN forms a current path together, thus make whole PNP triode circuit working in the state of saturation conduction, the power supply being connected to PNP triode emitter is made directly to be added on resistance R2, this place that resistance R2 and NPN_OUT is connected and NPN_OUT export high level VCC.
Wherein, the scope of the output voltage of direct current VCC power supply between 12V to 24V, can comprise 12V and 24V, and the first resistance R1 and the second resistance R2 can be all 4.7k Ω.
The signaling conversion circuit that the utility model embodiment provides, achieve and NPN signal is converted to PNP signal, this signaling conversion circuit only need use a common general PNP triode and two resistance, the signal that NPN type Boolean value output sensor can be made to export becomes positive-negative-positive signal after this change-over circuit, there is circuit structure simple, the advantage that cost is low.
The utility model embodiment still provides a kind of testing circuit, this testing circuit mainly comprises NPN type Boolean value output sensor, signaling conversion circuit and programmable logic controller (PLC), wherein, signaling conversion circuit is connected with the output signal end of NPN type Boolean value output sensor, wherein, any one signaling conversion circuit that this signaling conversion circuit can provide for the utility model embodiment foregoing, programmable logic controller (PLC) is connected with signaling conversion circuit.
From above description, can find out, the utility model achieves and carries out unique selection without the need to the way of output according to sensor switching value to the model of PLC, solve the type selecting of PLC in prior art and be limited to the problem of the sensor switching value way of output, and then reach the effect of the type selecting mode improving PLC.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a signaling conversion circuit, is characterized in that, comprising:
First Boolean value output sensor (10), wherein, described first Boolean value output sensor (10) is NPN type Boolean value output sensor; And
Change-over circuit (20), be connected with described first Boolean value output sensor (10), for the output signal of described first Boolean value output sensor (10) being converted to the output signal of second switch quantity sensor, wherein, described second switch quantity sensor is positive-negative-positive Boolean value output sensor.
2. signaling conversion circuit according to claim 1, is characterized in that, described change-over circuit (20) comprising:
First resistance (R1);
Direct supply (VCC);
Triode (VT1), base stage is connected to the output terminal of described first Boolean value output sensor (10) by described first resistance (R1), emitter is connected with described direct supply (VCC), and collector is for exporting the output signal of described second switch quantity sensor; And
Second resistance (R2), between the collector being connected to described triode (VT1) and signal ground.
3. signaling conversion circuit according to claim 2, is characterized in that, described triode (VT1) is PNP triode.
4. signaling conversion circuit according to claim 2, is characterized in that, the output voltage of described direct supply (VCC) is 12V to 24V.
5. a testing circuit, is characterized in that, comprising:
NPN type Boolean value output sensor;
Signaling conversion circuit, is connected with described NPN type Boolean value output sensor, wherein, and the signaling conversion circuit of described signaling conversion circuit according to any one of Claims 1-4; And
Programmable logic controller (PLC), is connected with the output signal end of the second switch quantity sensor of described signaling conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485683.XU CN204065777U (en) | 2014-08-26 | 2014-08-26 | Signaling conversion circuit and testing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485683.XU CN204065777U (en) | 2014-08-26 | 2014-08-26 | Signaling conversion circuit and testing circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204065777U true CN204065777U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420485683.XU Expired - Fee Related CN204065777U (en) | 2014-08-26 | 2014-08-26 | Signaling conversion circuit and testing circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109955239A (en) * | 2017-12-22 | 2019-07-02 | 合肥欣奕华智能机器有限公司 | A kind of dcs and robot device |
-
2014
- 2014-08-26 CN CN201420485683.XU patent/CN204065777U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109955239A (en) * | 2017-12-22 | 2019-07-02 | 合肥欣奕华智能机器有限公司 | A kind of dcs and robot device |
| CN109955239B (en) * | 2017-12-22 | 2021-04-16 | 合肥欣奕华智能机器有限公司 | Distributed control system and robot equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325105 Yalong Industrial Park, two industrial zone, Ou Bei Town, Yongjia County, Wenzhou, Zhejiang, China Patentee after: YALONG INTELLIGENT EQUIPMENT GROUP Co.,Ltd. Address before: 325105 Yalong Industrial Park, two industrial zone, Ou Bei Town, Yongjia County, Wenzhou, Zhejiang, China Patentee before: ZHEJIANG YALONG EDUCATIONAL EQUIPMENT JOINT-STOCK Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20210826 |