CN204154802U - The numeric type leakage current sensor that belt switch amount detects - Google Patents
The numeric type leakage current sensor that belt switch amount detects Download PDFInfo
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- CN204154802U CN204154802U CN201420463273.5U CN201420463273U CN204154802U CN 204154802 U CN204154802 U CN 204154802U CN 201420463273 U CN201420463273 U CN 201420463273U CN 204154802 U CN204154802 U CN 204154802U
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- leakage current
- current sensor
- switch
- network interface
- numeric type
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Abstract
The utility model discloses the numeric type leakage current sensor that a kind of belt switch amount detects, comprise housing, base and be installed on the leakage current sensing circuit of enclosure interior, base is provided with switch acquisition interface and network interface, the input end of described switch acquisition interface is used for being connected with detected switch, and described network interface is used for being connected with external monitoring devices; Also comprise analog to digital conversion circuit, leakage current sensing circuit, switch acquisition interface and network interface are connected the corresponding port of this analog to digital conversion circuit respectively.The leakage current sensor that the utility model provides, belt switch amount detects, and can export with digital signal simultaneously.
Description
Technical field
The utility model relates to a kind of leakage current sensor, specifically, relates to the numeric type leakage current sensor that a kind of belt switch amount detects.
Background technology
In prior art, the method for information acquisition, general adopts traditional grafting pressure line type technique, and because the interface compatibility between multiple sensors is poor, wiring quantity is many, with monitoring device carry out communication be connected time, connection circuit complexity.The method of information acquisition general in current industry has two kinds: one is the direct mode of connection, and another kind adopts network port acquisition monitoring information and carries out sensor signal substitute mode by Signals Transfer Board.It is large to there is crimping workload in the direct mode of connection, crimping inefficiency, easily occurs that wrong line and wiring crimp the problems such as bad, adopt network interface end collection and carry out the mode of sensor signal switching by Signals Transfer Board, owing to have employed netting twine wiring patterns, relative to the direct mode of connection, save a large amount of on-the-spot compression bonded line operation, work efficiency has had large increase, save a large amount of copper cash, and avoid the problem of wiring error, it is a kind of information acquisition mode being all better than direct wiring from efficiency and cost, but still add Signals Transfer Board device, the increase of device causes system failure point to be increased, take up room the problems such as increase, in addition, because the signal exported is simulating signal, cause its circuit anti-interference poor.
Utility model content
The purpose of this utility model is to provide a kind of leakage current sensor, and belt switch amount detects, and can export with digital signal simultaneously.The purpose of this utility model is by technical scheme realization once:
The numeric type leakage current sensor that a kind of belt switch amount detects, comprise housing, base and be installed on the leakage current sensing circuit of enclosure interior, base is provided with switch acquisition interface and network interface, the input end of described switch acquisition interface is used for being connected with detected switch, and described network interface is used for being connected with external monitoring devices; It is characterized in that: also comprise analog to digital conversion circuit, leakage current sensing circuit, switch acquisition interface and network interface are connected the corresponding port of this analog to digital conversion circuit respectively.
As concrete technical scheme, described network interface is RS485 circuit.
As concrete technical scheme, analog-digital conversion circuit as described is single-chip microcomputer, and model is PIC16F32.
The utility model beneficial effect is compared with prior art: be integrated with on-off model collection and leakage current collection, and digital processing has been carried out to the simulating signal gathered, export with digital signal, greatly reduce the wiring difficulty of the monitoring system of power supply, achieve quick group screen and the standardized designs of system.
Accompanying drawing explanation
The unitary construction schematic diagram of the numeric type leakage current sensor that the belt switch amount that Fig. 1 provides for the utility model embodiment detects.
The substructure schematic diagram of the numeric type leakage current sensor that the belt switch amount that Fig. 2 provides for the utility model embodiment detects.
The schematic diagram of circuit part in the numeric type leakage current sensor that the belt switch amount that Fig. 3 provides for the utility model embodiment detects.
The application schematic diagram of the numeric type leakage current sensor that Fig. 4 detects for the belt switch amount provided for the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described:
See Fig. 1 and Fig. 2, the numeric type leakage current sensor that belt switch amount that the present embodiment provides detects, comprising: housing 1, base 2, the leakage current sensing circuit being installed on housing 1 inside and analog to digital conversion circuit and the switch acquisition interface 5 be installed on base 2 and network interface 4.
Shown in composition graphs 3, analog to digital conversion circuit is singlechip chip, such as the chip of PIC16F32 model.Leakage current sensing circuit, switch acquisition interface 5 and network interface 4 are connected the corresponding port of this analog to digital conversion circuit respectively.
Leakage current sensing circuit is same as the prior art, detects by the cable current of through hole mainly through the through hole arranged in housing 1, and the analog quantity of collection is supplied to analog to digital conversion circuit carries out modulus process.Switch acquisition interface 5 is 4 pin information input terminals, comprise tripping operation information acquisition end SD, status information capture end OF and power supply signal incoming end VCC+, tripping operation information acquisition end SD and status information capture end OF is used for the on-off model such as the tripping operation that fault caused and ground connection and is sent to external monitoring devices through network interface 4.The input end of switch acquisition interface 5 is connected with detected switch, the switching value information in acquisition circuit, is supplied to analog to digital conversion circuit and carries out modulus process.Network interface 4 is RS485 interface, and input end is connected with the output terminal of analog to digital conversion circuit, and output terminal is connected with external monitoring devices, for the sensor sample signal of numeral and switch acquisition signal are exported, and composition graphs 4.
Above-described embodiment provides sensor that switch acquisition interface 5 and network interface 4 are integrated in sensor internal, and the digital signal that the simulating signal that the on-off model exported by switch acquisition interface 5, leakage current sensing circuit 3 export is changed through analog to digital conversion circuit is exported by network interface jointly.The sensor achieves the collection of the digital signal of switch amount information and leakage current information, achieves the information interaction with external monitoring device.
The utility model is not limited to above-described embodiment, based on above-described embodiment, the simple replacement not making creative work, should belong to the scope that the utility model discloses.
Claims (3)
1. the numeric type leakage current sensor of a belt switch amount detection, comprise housing, base and be installed on the leakage current sensing circuit of enclosure interior, base is provided with switch acquisition interface and network interface, the input end of described switch acquisition interface is used for being connected with detected switch, and described network interface is used for being connected with external monitoring devices; It is characterized in that: also comprise analog to digital conversion circuit, leakage current sensing circuit, switch acquisition interface and network interface are connected the corresponding port of this analog to digital conversion circuit respectively.
2. the numeric type leakage current sensor of belt switch amount detection according to claim 1, it is characterized in that, described network interface is RS485 circuit.
3. the numeric type leakage current sensor of belt switch amount detection according to claim 1, it is characterized in that, analog-digital conversion circuit as described is single-chip microcomputer, and model is PIC16F32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463273.5U CN204154802U (en) | 2014-08-15 | 2014-08-15 | The numeric type leakage current sensor that belt switch amount detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463273.5U CN204154802U (en) | 2014-08-15 | 2014-08-15 | The numeric type leakage current sensor that belt switch amount detects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204154802U true CN204154802U (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420463273.5U Expired - Fee Related CN204154802U (en) | 2014-08-15 | 2014-08-15 | The numeric type leakage current sensor that belt switch amount detects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204154802U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514959A (en) * | 2015-11-30 | 2016-04-20 | 江苏茶花电气股份有限公司 | Switching value current sensor |
-
2014
- 2014-08-15 CN CN201420463273.5U patent/CN204154802U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514959A (en) * | 2015-11-30 | 2016-04-20 | 江苏茶花电气股份有限公司 | Switching value current sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20200815 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |