CN208489467U - Load detecting circuit, intelligent switch/socket and based on intelligent switch/socket smart home system - Google Patents
Load detecting circuit, intelligent switch/socket and based on intelligent switch/socket smart home system Download PDFInfo
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- CN208489467U CN208489467U CN201820859964.5U CN201820859964U CN208489467U CN 208489467 U CN208489467 U CN 208489467U CN 201820859964 U CN201820859964 U CN 201820859964U CN 208489467 U CN208489467 U CN 208489467U
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Abstract
A kind of load detecting circuit, intelligent switch/socket and based on intelligent switch/socket smart home system.The load detecting circuit includes relay, control module, voltage sampling unit and load sampling unit.Relay is for connecting external loading and firewire；Control module is electrically connected the relay；Voltage sampling unit is sampled the voltage at the relay both ends, control module is electrically connected with voltage sampling unit, to obtain the voltage signal at relay both ends, control module judges the working condition of relay according to the corresponding relationship of the relay control signal of sending and the relay both end voltage signal of acquisition；Load sampling unit is connected between relay and firewire, and the input terminal and output end for loading sampling unit are connected to control module, voltage of the control module according to load sampling unit both ends, the working condition loaded.Intelligent switch/socket and include above-mentioned load detecting circuit based on intelligent switch/socket smart home system.
Description
Technical field
The utility model relates to smart home field, in particular to a kind of load detecting circuit, intelligent switch/socket and base
In intelligent switch/socket smart home system.
Background technique
(for example, switch on wall or switch socket) usually drives relay by MCU (control module) in intelligent switch
Control the on-off of load circuit.
Currently, generally using power relay opening as 220V AC power source in the intelligent switch field of smart home
Close device.LED, halogen lamp, the on-off of the non-purely resistive load such as motor are controlled by relay, but once broken down, can not be sentenced
Surely it is that relay breaks down or load is broken down, lacks the effective monitoring to load and relay working condition.
Utility model content
In order to solve the problems, such as effective monitoring of the intelligent switch shortage to load and relay working condition in the related technology,
The utility model provides a kind of load detecting circuit.
The utility model separately provides a kind of intelligent switch, which includes above-mentioned load detecting circuit.
The utility model separately provides a kind of intelligent socket, which includes above-mentioned load detecting circuit.
The utility model provides a kind of smart home system based on intelligent switch again, which includes above-mentioned
Intelligent switch.
The utility model provides a kind of smart home system based on intelligent socket again, which includes above-mentioned
Intelligent socket.
The utility model provides a kind of load detecting circuit, comprising:
Relay, for connecting external loading and firewire；
Control module is electrically connected the relay；
Voltage sampling unit is sampled the voltage at the relay both ends, and the control module takes with the voltage
The electrical connection of sample unit, to obtain the voltage signal at the relay both ends, the control module is controlled according to the relay of sending
The corresponding relationship of signal and the relay both end voltage signal of acquisition, judges the working condition of the relay；
Sampling unit is loaded, is connected between the relay and firewire, the load input terminal of sampling unit and defeated
Outlet is connected to the control module, and the control module obtains described according to the voltage at the load sampling unit both ends
The working condition of load.
Optionally, the voltage sampling unit includes first voltage sampling unit and second voltage sampling unit；
The input terminal of the first voltage sampling unit is electrically connected with wherein one end of the relay, to the relay
The voltage of device wherein one end is sampled, and the output end of the first voltage sampling unit is electrically connected with the control module；
The input terminal of the second voltage sampling unit is electrically connected with the other end of the relay, to the relay
The voltage of the other end is sampled, and the output end of the second voltage sampling unit is electrically connected with the control module.
Optionally, the first voltage sampling unit and second voltage sampling unit include: first resistor and with it is described
The second resistance that first resistor is connected in series, wherein one end of the first resistor are input terminal, the first resistor with it is described
The other end of second resistance connection is output end, and wherein one end of second resistance is connect with the first resistor, second electricity
The other end of resistance is grounded.
Optionally, the control module includes modulus sampling unit and microprocessor, the modulus sampling unit electrical connection
The microprocessor；
The output end of the output end of the first voltage sampling unit and the second voltage sampling unit with the mould
Number sampling unit electrical connection.
Optionally, the modulus sampling unit and the microprocessor are two independent chips or modulus sampling
Unit and the microprocessor are integrated in a chip.
Optionally, the load sampling unit is sample resistance.
Optionally, the load detecting circuit further includes filter unit, the voltage sampling unit and load sampling
Unit is electrically connected by the filter unit with the control module.
Optionally, the load detecting circuit further includes communication unit, and the communication unit is electrically connected with the control module
It connects, mode is communicated the communication unit with exterior gateway by wireless communication.
The utility model separately provides a kind of intelligent switch, including shell and is located at the intracorporal above-mentioned load detecting of the shell
Circuit.
The utility model separately provides a kind of intelligent socket, which is characterized in that including shell and be located at the shell it is intracorporal
Above-mentioned load detecting circuit.
The utility model provides a kind of smart home system based on intelligent switch, including above-mentioned intelligent switch and institute again
State gateway that intelligent switch communicated, the Cloud Server that is communicated with the gateway and terminal；
The information of the working condition of relay and/or external loading is passed through communication unit by the control module of the intelligent switch
Member is sent to the gateway, and the information is fed back to the terminal, the terminal pair by the Cloud Server by the gateway
The information is shown.
The utility model provides a kind of smart home system based on intelligent socket, including above-mentioned intelligent socket and institute again
State gateway that intelligent socket communicated, the Cloud Server that is communicated with the gateway and terminal；
The information of the working condition of relay and/or external loading is passed through communication unit by the control module of the intelligent socket
Member is sent to the gateway, and the information is fed back to the terminal, the terminal pair by the Cloud Server by the gateway
The information is shown.
The technical solution that the embodiments of the present invention provide can include the following benefits:
The utility model load detecting circuit includes relay, control module, voltage sampling unit and load sampling unit.
Voltage sampling unit is sampled the voltage at the relay both ends, and control module is electrically connected with voltage sampling unit, to obtain
The voltage signal at relay both ends is taken, control module is according to the relay control signal of sending and the relay both ends of acquisition
Voltage signal judges the working condition of relay.It is the letter for controlling relay closure when control module issues control signal
Number when, if detecting, the voltage value at relay both ends is identical, judge relay non-normal working, on the contrary, if detect after
The voltage value at electric appliance both ends is different, then judges relay work, the control signal issued as a result, by control module with
Whether the voltage signal at relay both ends corresponding, obtain relay whether normal working condition.Sampling unit is loaded to connect
It connects between relay and firewire, the input terminal and output end for loading sampling unit are connected to control module, control module root
According to the voltage at load sampling unit both ends, the working condition loaded.I.e. in the state that relay is closed, if detecting negative
The voltage value for carrying sampling unit both ends is different, then judges that load works normally, if detecting the electricity at load sampling unit both ends
Pressure value is identical, then judges to load non-normal working.In this way, realizing by comparing the voltage value at load sampling unit both ends to negative
Carry the detection of working condition.Therefore, load detecting circuit passes through the voltage sampling unit that is sampled to relay both end voltage
It realizes effective monitoring to relay working condition, while realizing by comparing the voltage signal at load sampling unit both ends to negative
Effective monitoring of working condition is carried, and then convenient for the investigation to relay and load faulty.
The intelligent switch of the utility model includes shell and above-mentioned load detecting circuit, can be real by the load detecting circuit
Now to the effective monitoring of relay working condition and load operating condition, and then convenient for the investigation to relay and load faulty.
The intelligent socket of the utility model includes shell and above-mentioned load detecting circuit, can be real by the load detecting circuit
Now to the effective monitoring of relay working condition and load operating condition, and then convenient for the investigation to relay and load faulty.
The utility model provides a kind of smart home system based on intelligent switch, opens including at least one above-mentioned intelligence
Pass, the gateway communicated with intelligent switch, the Cloud Server communicated with gateway and terminal；The control mould of intelligent switch
The information of the working condition of relay and/or external loading is sent to gateway by communication unit by block, and gateway passes through cloud service
The information is fed back to terminal by device, and terminal shows information, so that relay and/or the working condition of load is timely
Terminal is fed back to, and then is supervised convenient for manager, the information for enabling manager to be shown according to terminal is debugged in time.
The utility model provides a kind of smart home system based on intelligent socket, inserts including at least one above-mentioned intelligence
Seat, the gateway communicated with intelligent socket, the Cloud Server communicated with gateway and terminal；The control mould of intelligent socket
The information of the working condition of relay and/or external loading is sent to gateway by communication unit by block, and gateway passes through cloud service
The information is fed back to terminal by device, and terminal shows information, so that relay and/or the working condition of load is timely
Terminal is fed back to, and then is supervised convenient for manager, the information for enabling manager to be shown according to terminal is debugged in time.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Utility model.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets the utility model
Embodiment, and be used to explain the principles of the present invention together in specification.
Fig. 1 is that load detecting circuit is connected to the structural schematic diagram of firewire, zero curve to the utility model in one embodiment.
Fig. 2 is the structural schematic diagram that load detecting circuit is connected to firewire, zero curve in another embodiment.
Fig. 3 is the schematic diagram that the internal circuit of first voltage sampling unit is connect with load, digital-to-analogue sample circuit.
Fig. 4 is the schematic diagram that the internal circuit of second voltage sampling unit is connect with firewire, digital-to-analogue sample circuit.
Fig. 5 is that the load detecting circuit of the utility model further includes the structural block diagram of filter unit.
Fig. 6 is that the load detecting circuit of the utility model further includes the structural block diagram of communication unit.
Fig. 7 is the structural block diagram of smart home system of the utility model based on intelligent switch.
Fig. 8 is the structural block diagram of smart home system of the utility model based on intelligent socket.
Specific embodiment
Preferred implementation in order to further illustrate the principles of the present invention and structure, now in conjunction with attached drawing to the utility model
Example is described in detail.
As shown in Figure 1, the present invention provides a kind of load detecting circuit, which includes relay 11, electricity
Press sampling unit 12, control module 13 and load sampling unit 14.The load detecting circuit 10 can be used in intelligent switch,
It can be used in intelligent socket.When intelligent switch or intelligent socket access alternating current, relay 11 is connected to external loading 21
Between firewire.Voltage sampling unit 12 is for being sampled the voltage at relay both ends, to drag down the electricity at relay both ends
Pressure value, enables its output voltage and 13 logical consistency of control module.Control module 13 is electrically connected 12 He of voltage sampling unit
Relay 11, to obtain the voltage signal at relay both ends, relay control signal and acquisition of the control module 13 according to sending
Relay both end voltage signal corresponding relationship, judge the working condition of relay.Controlled when control module 13 issues
Signal is when controlling the signal of relay closure, if detecting, the voltage value at relay both ends is identical, judges that relay is non-
It works normally, on the contrary, the voltage value at relay both ends is different if detecting, judges relay work, pass through as a result,
Whether the control signal that control module issues is corresponding with the voltage signal at relay both ends, obtains the whether normal of relay
Working condition.The control module can be single-chip microcontroller or DSP.
Load sampling unit 14 is connected between relay 11 and firewire, loads the input terminal and output end of sampling unit 14
It is connected to control module 13, voltage of the control module according to load 14 both ends of sampling unit, the working condition loaded.I.e.
In the state of relay closure, if detecting, the voltage value at load 14 both ends of sampling unit is different, judges that load is normal
Work, if detecting, the voltage value at load sampling unit both ends is identical, judges to load non-normal working.
As shown in connection with fig. 2, voltage sampling unit 12 includes first voltage sampling unit 121 and second voltage sampling unit
122.Control module 13 includes modulus sampling unit 131 and microprocessor 132, and modulus sampling unit 131 is electrically connected microprocessor
132.Modulus sampling unit 131 and microprocessor 132 can be two independent chips, also can integrate in a chip,
For example, being integrated in a singlechip chip or dsp chip.
The input terminal of first voltage sampling unit 121 is electrically connected with wherein one end of relay 11, with to relay 11 its
The voltage of middle one end is sampled, and the output end of first voltage sampling unit 121 is electrically connected with modulus sampling unit 131；
The input terminal of second voltage sampling unit 122 is electrically connected with the other end of relay 11, with another to relay 11
The voltage at end is sampled, and the output end of second voltage sampling unit 122 is electrically connected with modulus sampling unit 131.
The voltage-mode that modulus sampling unit 131 exports first voltage sampling unit 121 and second voltage sampling unit 122
Quasi- signal is converted to digital signal, and the digital signal after conversion is input in microprocessor 132, right by microprocessor 132
Received digital signal is handled, calculated and is compared.
Further, as shown in figure 3, first voltage sampling unit 121 includes and (or wherein the one of relay 11 of load 21
End) connection first resistor R1 and with first resistor R1 be connected in series second resistance R2.First resistor R1 is connect with load 21
Wherein one end be input terminal, the other end that first resistor R1 is connect with second resistance R2 be output end.Second resistance R2 its
Middle one end is connect with first resistor R1, the other end ground connection of second resistance R2.First resistor R1 is the other end and mould of output end
Number sampling unit 131 is electrically connected.
Similarly, as shown in figure 4, second voltage sampling unit 122 includes the first electricity connecting with load sampling unit 14
The second resistance R2 for hindering R1 and being connected in series with first resistor R1.First resistor R1 connect with load sampling unit 14 wherein one
End is input terminal, and the other end that first resistor R1 is connect with second resistance R2 is output end.Wherein one end of second resistance R2 with
First resistor R1 connection, the other end ground connection of second resistance R2.First resistor R1 is the other end and modulus sampling list of output end
Member 131 is electrically connected.
When relay 11 disconnects, the voltage value of first voltage sampling unit 121 and the output of second voltage sampling unit 122
It is not identical；When relay 11 disconnects, the voltage value of first voltage sampling unit 121 and the output of second voltage sampling unit 122
It is identical.Therefore, the voltage value exported by detection first voltage sampling unit 121 and second voltage sampling unit 122, can detect
The switching state of relay 11 out.
First voltage sampling unit 121 and second voltage sampling unit 122 obtain the voltage signal at 11 both ends of relay, warp
After modulus sampling unit 131 is converted to digital signal, it is input to microprocessor 132.Microprocessor 132 is according to the relay of sending
Device controls the corresponding relationship of the 11 both end voltage signal of relay of signal and acquisition, judges the working condition of relay.
One end connection firewire of load sampling unit 14, other end connection second voltage sampling unit 122 (or relay 11
One end).The both ends of load sampling unit 14 are further connected to two input terminals of digital-to-analogue sample circuit 131, digital-to-analogue sampling electricity
The voltage at acquisition load 14 both ends of sampling unit of road 131, and the analog voltage signal for loading 14 both ends of sampling unit is changed into
Microprocessor 132 is sent to after digital voltage signal.Microprocessor 132 is obtained according to the voltage at load 14 both ends of sampling unit
The working condition of load.The load sampling unit 14 can be high-precision sample resistance.
When carrying out troubleshooting, first the working condition of relay 11 is detected, judges whether relay 11 is normal
Work.Specifically, microprocessor 132 passes through the on-off for drawing high or dragging down the level control relay 11 of I/O port.For example, micro- place
It manages device 132 and exports high level, relay 11 is closed, and microprocessor 132 exports low level, and relay 11 disconnects.Microprocessor
132 voltage value (the i.e. detection relays exported by comparing first voltage sampling unit 121 and second voltage sampling unit 122
The voltage value at 11 both ends), obtain the information of the switching state of relay 11.And judge the switching state of the relay 11 obtained
The relay control signal that is exported with microprocessor 132 of information it is whether corresponding, if corresponding, relay is in normal work
Make state, if being not correspond to, relay is in abnormal operating state, in this way, obtaining the working condition of relay 11.Specifically
, when the relay control signal that microprocessor 132 exports is control relay closure high level, if detecting relay two
The voltage value at end is high level, then relay is in closed state, and relay 11 works normally；If detecting relay both ends
Voltage value it is one high and one low, then relay is in an off state, and relay 11 works abnormal.Vice versa.
In the normal situation of relay, to load whether normal working condition detects.Specifically, in relay
Device 11 is in the state of closure, and the voltage value at load 14 both ends of sampling unit is acquired by modulus sampling unit 131, if inspection
The voltage difference for measuring load 14 both ends of sampling unit is 0, then loads and do not work normally；If detecting 14 liang of sampling unit of load
The voltage difference at end is not 0, then loads normal work.
Therefore, by the detection to 21 working conditions of relay 11 and load, relay can be obtained in time or load is
No normal information.
Further, as shown in figure 5, load detecting circuit 10 further includes filter unit 17, first voltage believe sample unit 121,
Second voltage sampling unit 122 and load sampling unit 14 are electrically connected by filter unit 17 with modulus sampling unit 131.First
The voltage letter of voltage signal and load 14 both ends of sampling unit that voltage sampling unit 121, second voltage sampling unit 122 export
Number after the filtering of filter unit 17, then after being converted to digital signal by modulus sampling unit 131, it is sent to microprocessor 132
It is handled.Wherein, which can be the filter circuit being made of capacitor and resistor coupled in parallel, be also possible to filter core
Piece.Modulus sampling unit 17 can be ADC chip.
Further, as shown in fig. 6, load detecting circuit 10 further includes communication unit 18, communication unit 18 and microprocessor
132 electrical connections, mode is communicated communication unit 18 with exterior gateway by wireless communication.The communication unit 18 includes ZIGBEE
At least one of communication unit, bluetooth-communication unit, NFC communication unit, infrared communication unit and WIFI communication unit.
The utility model separately provides a kind of intelligent switch, which includes shell and be located at above-mentioned negative in the shell
Carry detection circuit.
The utility model provides a kind of intelligent socket again, which includes shell and be located at above-mentioned negative in the shell
Carry detection circuit.
As shown in connection with fig. 7, the utility model provides a kind of smart home system 100 based on intelligent switch, the intelligence man
System 100 is occupied to be led to including at least one above-mentioned intelligent switch 1, the gateway 20 communicated with intelligent switch 1, with gateway 20
The Cloud Server 30 and terminal 40 of letter.
The information of the working condition of each relay and/or external loading that the control module 13 of intelligent switch 1 will test
It is sent to gateway 20 by communication unit 18, which is fed back to terminal 40 by Cloud Server 30 by gateway 20, to manage
Person is monitored the working condition of intelligent switch 1 and load 21.
In one embodiment, load 21 can be distributed across the headlamp in each layer of building, and intelligent switch is distributed in
In the corridor or room of each floor of building, for controlling the switching of each headlamp.Each intelligent switch can automatically detect relay
The working condition for the headlamp that device and relay are controlled, and the working condition that will test passes through ZIGBEE, bluetooth or WIFI
Communication network send gateway 20, gateway 20 is sent to Cloud Server 30 (or cloud), Cloud Server 30 by WIFI communication network
Terminal 40, the relay and headlamp that terminal 40 detects intelligent switch are sent to by mobile communications network or WIFI again
Work state information shown, facilitate relevant manager to supervise all headlamps and intelligent switch of entire building space
Pipe, and facilitate whether manager's timely learning intelligent switch or load break down, to carry out troubleshooting in time.
As shown in connection with fig. 8, the utility model provides a kind of smart home system 200 based on intelligent socket, the intelligence man
System 200 is occupied to be led to including at least one above-mentioned intelligent socket 2, the gateway 20 communicated with intelligent switch 2, with gateway 20
The Cloud Server 30 and terminal 40 of letter.
The information of the working condition of each relay and/or external loading that the control module 13 of intelligent socket 2 will test
It is sent to gateway 20 by communication unit 18, which is fed back to terminal 40 by Cloud Server 30 by gateway 20, to manage
Person is monitored the working condition of intelligent socket 2 and load 21.
The above is only the preferable possible embodiments of the utility model, not limit the protection scope of the utility model, all fortune
The variation of the equivalent structure made by the utility model specification and accompanying drawing content, is all contained in the protection scope of the utility model
It is interior.
Claims (12)
1. a kind of load detecting circuit characterized by comprising
Relay, for connecting external loading and firewire；
Control module is electrically connected the relay；
Voltage sampling unit is sampled the voltage at the relay both ends, the control module and the voltage sampling list
Member electrical connection, to obtain the voltage signal at the relay both ends, the control module is according to the relay control signal of sending
With the corresponding relationship of the relay both end voltage signal of acquisition, the working condition of the relay is judged；
Sampling unit is loaded, is connected between the relay and firewire, the input terminal and output end of the load sampling unit
It is connected to the control module, the control module obtains the load according to the voltage at the load sampling unit both ends
Working condition.
2. load detecting circuit according to claim 1, which is characterized in that the voltage sampling unit includes first voltage
Sampling unit and second voltage sampling unit；
The input terminal of the first voltage sampling unit is electrically connected with wherein one end of the relay, with to the relay its
The voltage of middle one end is sampled, and the output end of the first voltage sampling unit is electrically connected with the control module；
The input terminal of the second voltage sampling unit is electrically connected with the other end of the relay, with another to the relay
The voltage at end is sampled, and the output end of the second voltage sampling unit is electrically connected with the control module.
3. load detecting circuit according to claim 2, which is characterized in that the first voltage sampling unit and the second electricity
Pressure sampling unit include: first resistor and with the first resistor be connected in series second resistance, the first resistor its
Middle one end is input terminal, and the other end that the first resistor is connect with the second resistance is output end, and second resistance is wherein
One end is connect with the first resistor, the other end ground connection of the second resistance.
4. load detecting circuit according to claim 2, which is characterized in that the control module includes modulus sampling unit
And microprocessor, the modulus sampling unit are electrically connected the microprocessor；
The output end of the output end of the first voltage sampling unit and the second voltage sampling unit is adopted with the modulus
The electrical connection of sample unit.
5. load detecting circuit according to claim 4, which is characterized in that the modulus sampling unit and the micro process
Device is that two independent chips or the modulus sampling unit and the microprocessor are integrated in a chip.
6. load detecting circuit according to claim 1, which is characterized in that the load sampling unit is sample resistance.
7. load detecting circuit according to claim 2, which is characterized in that the load detecting circuit further includes that filtering is single
Member, the voltage sampling unit and the load sampling unit are electrically connected by the filter unit with the control module.
8. load detecting circuit according to claim 1, which is characterized in that the load detecting circuit further includes communication unit
Member, the communication unit are electrically connected with the control module, the communication unit by wireless communication mode and exterior gateway into
Row communication.
9. a kind of intelligent switch, which is characterized in that including shell and be located at the shell it is intracorporal as claim 1 to 8 it is any
Load detecting circuit described in.
10. a kind of intelligent socket, which is characterized in that including shell and be located at the shell it is intracorporal as claim 1 to 8 it is any
Load detecting circuit described in.
11. a kind of smart home system based on intelligent switch, which is characterized in that opened including intelligence as claimed in claim 9
Pass, the gateway communicated with the intelligent switch, the Cloud Server communicated with the gateway and terminal；
The control module of the intelligent switch sends out the information of the working condition of relay and/or external loading by communication unit
It send to the gateway, the information is fed back to the terminal by the Cloud Server by the gateway, and the terminal is to described
Information is shown.
12. a kind of smart home system based on intelligent socket, which is characterized in that inserted including intelligence as claimed in claim 10
Seat, the gateway communicated with the intelligent socket, the Cloud Server communicated with the gateway and terminal；
The control module of the intelligent socket sends out the information of the working condition of relay and/or external loading by communication unit
It send to the gateway, the information is fed back to the terminal by the Cloud Server by the gateway, and the terminal is to described
Information is shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820859964.5U CN208489467U (en) | 2018-06-05 | 2018-06-05 | Load detecting circuit, intelligent switch/socket and based on intelligent switch/socket smart home system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820859964.5U CN208489467U (en) | 2018-06-05 | 2018-06-05 | Load detecting circuit, intelligent switch/socket and based on intelligent switch/socket smart home system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208489467U true CN208489467U (en) | 2019-02-12 |
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ID=65251119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820859964.5U Active CN208489467U (en) | 2018-06-05 | 2018-06-05 | Load detecting circuit, intelligent switch/socket and based on intelligent switch/socket smart home system |
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| Country | Link |
|---|---|
| CN (1) | CN208489467U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869881A (en) * | 2019-03-14 | 2019-06-11 | 苏州旋凌科技有限公司 | It is a kind of for judging the method and circuit of the operating status of compressor |
| CN109888578A (en) * | 2019-04-18 | 2019-06-14 | 珠海格力电器股份有限公司 | Multifunctional wiring device and control method |
-
2018
- 2018-06-05 CN CN201820859964.5U patent/CN208489467U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869881A (en) * | 2019-03-14 | 2019-06-11 | 苏州旋凌科技有限公司 | It is a kind of for judging the method and circuit of the operating status of compressor |
| CN109888578A (en) * | 2019-04-18 | 2019-06-14 | 珠海格力电器股份有限公司 | Multifunctional wiring device and control method |
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