CN204361010U - DC switch - Google Patents
DC switch Download PDFInfo
- Publication number
- CN204361010U CN204361010U CN201420734203.9U CN201420734203U CN204361010U CN 204361010 U CN204361010 U CN 204361010U CN 201420734203 U CN201420734203 U CN 201420734203U CN 204361010 U CN204361010 U CN 204361010U
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- Prior art keywords
- relay
- switch
- mcu
- voltage
- switch according
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- 238000005070 sampling Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Abstract
The utility model relates to DC switch, comprise relay, a relay control module, this relay control module comprises a MCU, the coil of relay described in MCU control connection, MCU sampling connection current sensor and a voltage sensor, current sensor flows through the electric current in relay contact loop for measuring, voltage sensor is for measuring the input voltage of this DC switch.The utility model can monitor the state of electric current in this DC switch and voltage in real time intuitively, has one to get information about, also can calculate power consumption further by voltage and current value to the running status of DC switch.
Description
Technical field
The utility model relates to DC switch, belongs to DC switch field.
Background technology
Recently due to the rise of new forms of energy, schedule has been put in low-voltage direct electricity consumption.Get up to the research and development of low-voltage direct equipment also more.Application number is 200920205110.6, utility model name is called the patent application of " a kind of mechanical electronic DC switch ", disclose a kind of mechanical electronic DC switch, in that patent, DC unit, MCU control unit, push-button unit connects successively, DC unit and both positive and negative polarity input adapter, negative pole out splice going splice connects, main switch unit is connected in parallel with isolation arc extinguishing unit, and its input respectively with positive pole input adapter, DC unit connects, output is connected with positive pole out splice going splice, MCU control unit and main switch unit, isolation arc extinguishing unit connects, main switch unit is controlled by the state detecting key switch unit, opening and shutoff of isolation arc extinguishing unit.But this documents can not be monitored in real time to the current and voltage data in DC switch, also just one cannot be had to get information about to the running status of DC switch.
Utility model content
The purpose of this utility model is to provide DC switch, can not monitor the problem of its electric current and voltage in order to solve existing DC switch in real time.
For achieving the above object, scheme of the present utility model comprises DC switch, comprise relay, this DC switch also comprises a relay control module, this relay control module comprises a MCU, the coil of MCU control connection relay, MCU sampling connection current sensor and a voltage sensor, the contact of series relay on circuit between the input interface of this DC switch and output interface, current sensor flows through the electric current in relay contact loop for measuring, voltage sensor is for measuring the input voltage of this DC switch.
A series connection triode in the wire loop of relay, the base stage of triode connects the emitter of an output port connecting triode of MCU, MCU.
The coils from parallel connection of coils one of relay disconnects the piezo-resistance of the energy of moment coil for absorbing relay.
DC switch also comprises a communication unit, MCU connecting communication unit.
An output port of MCU passes through the emitter of a key switch connecting triode.
Input interface connects MCU and communication unit by a power conversion unit.
The contact of relay is normally opened contact.
MCU sampling connection current sensor and a voltage sensor, current sensor flows through the electric current in relay contact loop for measuring, voltage sensor is for measuring the input voltage of this DC switch; Monitor in real time the state of electric current in this DC switch and voltage intuitively, have one to get information about to the running status of DC switch, also can calculate power consumption further by voltage and current value.
In addition, at the two ends of relay coil, a piezo-resistance in parallel, can provide certain impedance, and restriction relay disconnects the electric current of the coil of moment, ensures that contact is comparatively fast separated, reduces arcing, improve the fail safe of this DC switch.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model execution mode.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in more detail.
DC switch, comprise relay, this DC switch also comprises a relay control module, this relay control module comprises a MCU, the coil of MCU control connection relay, MCU sampling connection current sensor and a voltage sensor, the contact of series relay on the circuit between the input interface of this DC switch and output interface, current sensor flows through the electric current in relay contact loop for measuring, voltage sensor is for measuring the input voltage of this DC switch.
Based on above technical scheme, by reference to the accompanying drawings, provide with next embodiment.
The utility model provides DC switch, achieves the integration realization that DC switch controls and measures, makes it possible to carry out accurate measurement to DC equipment electricity consumption.
As shown in Figure 1, this DC switch comprises current sensor 1, voltage sensor 2, MCU3, communication unit 4, power conversion unit 5, triode 6, relay 7, key switch 8, piezo-resistance 9.
Positive pole input adapter is connected to positive pole out splice going splice by the normally opened contact of relay 7, current sensor 1 is serially connected between positive pole input adapter and positive pole out splice going splice, voltage sensor 2 is just attempted by, between negative input joint, MCU3 sampling connects current sensor 1 and voltage sensor 2, MCU connecting communication unit 4, power conversion unit 5 is powered for MCU3 and communication unit 4, two input ports of power conversion unit 5 are just connecting respectively, negative pole input adapter, an output port connects MCU3 and communication unit 4 respectively, another output port connects negative pole out splice going splice, relay 7 piezo-resistance 9 in parallel, the energy of the coil of moment is disconnected for absorbing relay 7.
Whether electric the coil of MCU3 control relay 7 obtain, and is specially: MCU3 passes through the emitter of key switch 8 connecting triode 6, the base stage of MCU3 connecting triode 6, the collector connection relay 7 of triode 6.
The MCU3 moment monitors the state of key switch 8.After detecting that button 8 is pressed, by controlling triode 6 conducting, relay 7 being closed, exports and connect.After detecting that button 8 disconnects, by controlling triode 6 not conducting, relay 7 is disconnected, in disconnection process, piezo-resistance 9 absorbs the energy that relay 7 drive coil stores.Piezo-resistance 9 provides certain impedance simultaneously, and restriction relay 7 disconnects the electric current of the coil of moment, ensures that contact is comparatively fast separated, reduces arcing.
Voltage and current value are sent to MCU3 by voltage sensor and current sensor, MCU3 is according to sampled voltage and Current calculation power consumption and accumulative electricity consumption electric energy, transmitted by communication unit 4 (communication unit 4 is specially ZigBee wireless communication module), adopt wireless mode to read and the load-carrying electricity consumption situation of transmitting switch, also can realize controlling the break-make of DC switch simultaneously.
Be presented above concrete execution mode, but the utility model is not limited to described execution mode.Basic ideas of the present utility model are above-mentioned basic scheme, and for those of ordinary skill in the art, according to instruction of the present utility model, designing the model of various distortion, formula, parameter does not need to spend creative work.The change carried out execution mode when not departing from principle of the present utility model and spirit, amendment, replacement and modification still fall in protection range of the present utility model.
Claims (7)
1. DC switch, comprise relay, it is characterized in that, described DC switch also comprises a relay control module, this relay control module comprises a MCU, the coil of relay described in described MCU control connection, described MCU sampling connection current sensor and a voltage sensor, circuit between the input interface of described DC switch and output interface to be connected the contact of described relay, described current sensor flows through the electric current in relay contact loop for measuring, described voltage sensor is for measuring the input voltage of this DC switch.
2. DC switch according to claim 1, is characterized in that, a triode of connecting in the wire loop of described relay, the base stage of described triode connects described MCU, the emitter of an output port connecting triode of described MCU.
3. DC switch according to claim 2, is characterized in that, the coils from parallel connection of coils one of described relay disconnects the piezo-resistance of the energy of moment coil for absorbing relay.
4. DC switch according to claim 3, is characterized in that, described DC switch also comprises a communication unit, and described MCU connects described communication unit.
5. DC switch according to claim 4, is characterized in that, an output port of described MCU passes through the emitter of a key switch connecting triode.
6. DC switch according to claim 5, is characterized in that, described input interface connects described MCU and communication unit by a power conversion unit.
7. DC switch according to claim 6, is characterized in that, the contact of described relay is normally opened contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420734203.9U CN204361010U (en) | 2014-11-27 | 2014-11-27 | DC switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420734203.9U CN204361010U (en) | 2014-11-27 | 2014-11-27 | DC switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204361010U true CN204361010U (en) | 2015-05-27 |
Family
ID=53262465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420734203.9U Active CN204361010U (en) | 2014-11-27 | 2014-11-27 | DC switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204361010U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538254A (en) * | 2014-11-27 | 2015-04-22 | 许继集团有限公司 | Direct-current switch |
-
2014
- 2014-11-27 CN CN201420734203.9U patent/CN204361010U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538254A (en) * | 2014-11-27 | 2015-04-22 | 许继集团有限公司 | Direct-current switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |