CN115275721A - Intelligent sensing device for electricity consumption of electric appliance - Google Patents
Intelligent sensing device for electricity consumption of electric appliance Download PDFInfo
- Publication number
- CN115275721A CN115275721A CN202210948803.4A CN202210948803A CN115275721A CN 115275721 A CN115275721 A CN 115275721A CN 202210948803 A CN202210948803 A CN 202210948803A CN 115275721 A CN115275721 A CN 115275721A
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- module
- socket
- voltage
- electrically connected
- electric appliance
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
Abstract
The invention discloses an intelligent sensing device for electricity consumption of an electric appliance, which comprises a power supply transformation module, a control module, a socket module, an alternating current contactor and a current sampling circuit module, wherein the power supply transformation module is connected with the control module; the electric power transmission device can judge whether a useful electric appliance is connected and then determine whether to transmit power, is more intelligent, can control the AC contactor to be disconnected under the condition of the useless electric appliance, does not transmit power, fundamentally avoids the possibility of electric shock, is safer, and reduces the loss of electric energy to a certain extent. When the socket is empty, the jack output of the socket is low voltage, after the plug is inserted into the socket, the current sampling circuit module (detecting low current) can identify whether the socket uses electricity or not, the socket is controlled to output high voltage, the safety of household electricity utilization can be enhanced, and the socket is more energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the field of household safety power supply circuits, in particular to an intelligent sensing device for electricity consumption of an electric appliance.
Background
The household circuit generally comprises two service wires (also called power wires), an electric energy meter, a knife switch (currently, an air switch) leakage protector, safety equipment (other types of fuses such as the air switch and the like which meet the standard), electric appliances, sockets, conducting wires, switches and the like (mostly connected in parallel, and in a few cases connected in series). The circuit breaker is a common switching element in a power distribution cabinet, can close, carry and break current under normal or abnormal loop conditions, can automatically cut off a circuit when a power supply line has serious faults such as overload, short circuit, undervoltage and the like, and can transmit power all the time no matter whether a load is connected or not after the circuit breaker is manually closed. Common sockets include extension plugs and sockets mounted on a wall; wall mounted outlets typically do not have power buttons in the row. When people plug and unplug a power plug, if people forget to press down a power button on a power strip to cut off the power of the socket, or the socket does not have the power button, when the metal part of the plug is touched carelessly, or the plug is not in complete contact with the socket during plugging and unplugging, or insulation reduction caused by aging of the plug is caused, sparks are easily generated, people may be shocked to cause personal injury, and certain threat is caused to the life safety of people. At present, an intelligent sensing device for the power utilization of the electric appliance, which can sense the insertion of the electric appliance by self and can not allow power supply after the electric appliance is inserted, is absent in the market.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an intelligent sensing device for the electricity consumption of an electric appliance, which can judge whether the electric appliance is inserted, output a signal to control the on-off of an alternating current contactor, disconnect the alternating current contactor without supplying power under the condition that the electric appliance is not inserted, switch on the alternating current contactor to supply power to the electric appliance when the electric appliance is connected, intelligently identify whether the socket consumes electricity, output low voltage when the socket is in no load, supply high voltage when the socket is in load, and enhance the safety of household electricity consumption.
The invention adopts the technical scheme for solving the technical problems that: an intelligent sensing device for electricity consumption of an electric appliance comprises a power supply transformation module, a control module, a socket module, an alternating current contactor and a current sampling circuit module; the power supply transformation module is electrically connected with the alternating current contactor; the alternating current contactor is electrically connected with the socket module; the current sampling circuit module electric connection in the socket module with between the control module, the control module with ac contactor's controlled end electric connection, the current sampling circuit module includes sampling resistor, low pass filter circuit and difference operational amplifier circuit, sampling resistor connects in series in the circuit of socket module, and sampling resistor connects low pass filter circuit, and low pass filter circuit connects difference operational amplifier circuit, and difference operational amplifier circuit passes through analog to digital converter and connects control module.
The system is further improved, and the system also comprises an over-voltage and under-voltage protection module and a human body approach induction sensor, wherein the over-voltage and under-voltage protection module is electrically connected with the mains supply; the alternating current contactor is electrically connected with the over-voltage and under-voltage protection module, the over-voltage and under-voltage protection module is electrically connected with the control module, and the over-voltage and under-voltage protection module is electrically connected with the power supply transformation module; the human body proximity sensor is arranged on the surface of the socket module and electrically connected with the control module.
And further perfecting, the socket module is provided with a power display, and the power display is electrically connected with the control module and used for displaying the total load power, the total limit power, the load power and the limit power of the current socket module and the numerical value or percentage of the load power of other socket modules in an image mode.
Further perfection, the current sampling circuit module and the alternating current contactor are provided with a delay controller, and when the time from the insertion and extraction of the load to the re-insertion of the socket module is less than the threshold value of the delay controller, the delay controller prohibits the alternating current contactor from switching from low voltage to high voltage.
Further perfecting, control module and power vary voltage module electric connection for set for the output voltage of power vary voltage module, the output voltage of power vary voltage module is 25V.
Further perfection, the human body approach induction sensor is a pyroelectric sensor, and the numerical range of the maximum detection distance is 30mm-50mm.
Further perfect, it has earth leakage protection switch unit to establish ties between ac contactor and the socket module, control module and earth leakage protection switch unit electric connection, be equipped with on the socket module with earth leakage protection switch unit electric connection's warning indicator.
Further perfect, the socket module surface is equipped with the jack, and the jack internal fixation is provided with the seal cover, and the seal cover is equipped with V type elasticity clip outward, sliding mounting has the crane in the socket module, crane one end and V type elasticity clip fixed connection, and the lift drive module is connected to the crane other end, and the lift drive module is close to inductive transducer electric connection with the human body.
Further perfect, control module connects the central control panel, install the speech unit on the socket module, speech unit and central control panel electric connection.
The invention has the beneficial effects that: the invention provides an intelligent sensing device for electricity consumption of an electric appliance, which can judge whether the electric appliance is connected with the electric appliance and then determine whether to transmit electricity, is more intelligent, can control an alternating current contactor to be disconnected under the condition of no electric appliance, does not transmit electricity, fundamentally stops the possibility of electric shock, is safer and reduces the loss of electric energy to a certain extent. When the socket is empty, the jack output of the socket is low voltage, after the plug is inserted into the socket, the current sampling circuit module (detecting low current) can identify whether the socket uses electricity or not, the socket is controlled to output high voltage, the safety of household electricity utilization can be enhanced, and the socket is more energy-saving and environment-friendly.
Drawings
FIG. 1 is a current sampling circuit diagram;
fig. 2 is a schematic circuit block diagram of the entire system.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
referring to figure 1: example 1: an intelligent sensing device for electricity consumption of an electric appliance comprises a power supply transformation module, a control module, a socket module, an alternating current contactor and a current sampling circuit module; the power supply transformation module is electrically connected with the alternating current contactor; the alternating current contactor is electrically connected with the socket module; the current sampling circuit module electric connection in the socket module with between the control module, the control module with ac contactor's controlled end electric connection, the current sampling circuit module includes sampling resistor, low pass filter circuit and difference operational amplifier circuit, sampling resistor establishes ties in socket module's circuit, and sampling resistor connects low pass filter circuit, and low pass filter circuit (low pass filter network) connects difference operational amplifier circuit, and difference operational amplifier circuit passes through analog to digital converter connection control module.
The working principle is as follows: the whole system judges whether the socket module is connected with the electric appliance or not by detecting the current, and samples the current signal by adopting a low-cost and simple sampling resistance method. The power supply voltage of the current sampling circuit is below 36V of safe voltage, the current sampling circuit is obtained by adopting a voltage reduction means of a power supply transformation module, if a useful electric appliance is inserted, the input voltage is input to the electric appliance through a sampling resistor, the electric appliance consumes electric quantity, current flows through a main circuit, after the insertion of the useful electric appliance is confirmed, a single chip microcomputer (namely a control module) is used for controlling an alternating current contactor to be conducted and connected with normal voltage, so that the electric appliance is supplied with power, if no current is generated, the current sampling circuit shows that the electric appliance is not inserted, the alternating current contactor is in a disconnected state and does not supply power, and the current sampling circuit is shown in figure 1.
When an electrical appliance is connected, current flows through a sampling resistor, voltage is generated at two ends of the sampling resistor, in order to avoid the influence of the electrical appliance, parasitic inductance and the like, a low-pass filtering link is added after the sampling resistor, so that the current sampling is more accurate and faster, then the obtained voltage is amplified by using a differential operational amplifier circuit, and because the current flow direction is uncertain, additional reference voltage is added into the differential operational amplifier circuit to provide bias voltage V REF The output of the circuit is always positive voltage, and the output voltage of the differential operational amplifier circuit is V o ＝(I M ×R Shunt ±V OS )×G+V REF
Wherein, V o Is the output voltage of a differential operational amplifier, I M For sampling the resulting current, V OS Is the input offset voltage of the operational amplifier, G is the amplification factor of the differential operational amplifier, V REF Is a reference voltage.
And then the amplified voltage is converted into digital quantity through an analog-to-digital converter (ADC), finally, the phase current is obtained through calculation by the single chip microcomputer, if the phase current exists, the current is judged to be that the electric appliance is inserted into a socket for power utilization, the single chip microcomputer outputs a corresponding control signal to enable the alternating current contactor to be conducted to supply power to the electric appliance, and otherwise, the alternating current contactor is disconnected.
For the scheme, corresponding experiments are carried out, different electrical appliances are respectively inserted, the generated current is detected, and the obtained result is shown in table 1.
TABLE 1 Electrical equipment insertion current detection experiment result table
The tests are tests of the condition of 25V alternating voltage power supply, if the voltage is increased to 36V, the current value obtained by detection is correspondingly increased, and the unit of the detected current is in mA level; the current can be detected by testing if the electrical appliance is inserted into a motor electrical appliance, and the current can be detected only by starting the electrical appliance if the electrical appliance is a switch power supply.
According to the experimental result, the current is detected by adopting a current sampling method, whether an electric appliance is inserted or not can be judged, and the sensing device can be realized.
As shown in fig. 2, example 2: on the basis of the embodiment 1, the device further comprises an overvoltage and undervoltage protection module and a human body proximity induction sensor, wherein the input end of the overvoltage and undervoltage protection module is electrically connected with a mains supply; the first output end of the over-voltage and under-voltage protection module is electrically connected with the first input end of the control module, and the second output end of the over-voltage and under-voltage protection module is electrically connected with the first input end of the power transformation module; the overvoltage and undervoltage protection module is used for detecting the voltage (220V alternating current) input by mains supply and the conditions of each output voltage, simultaneously sends voltage data to the control module and receives a protection action signal from the control module to protect the circuit, the control module can adjust the output voltage of the stabilized power supply transformation module according to the voltage fluctuation condition, the power utilization safety of an electric appliance load is guaranteed, when the line voltage is suddenly overhigh (like lightning stroke), the overvoltage and undervoltage protection module automatically cuts off the circuit, and the input voltage is automatically recovered after being stabilized.
The first input end of the alternating current contactor is electrically connected with the third output end of the over-voltage and under-voltage protection module, and normal mains supply voltage is transmitted to the alternating current contactor, and the second input end of the alternating current contactor is electrically connected with the output end of the power supply transformation module and is connected with transformed voltage (such as low-voltage safety voltage or normal stable voltage); the output end of the alternating current contactor is electrically connected with the input end of the socket module and supplies power to the jacks on the socket module; the controlled end of the alternating current contactor is electrically connected with the output end of the control module; the switching control module can receive a switching control signal from the control module to switch input voltage, the alternating current contactor is used for switching a power supply, devices with similar functions comprise a relay switch, a disconnecting link switching switch and the like, and the input end voltage can be switched and output;
the input end of the current sampling circuit module is electrically connected with the output end of the socket module, and the output end of the current sampling circuit module is electrically connected with the second input end of the control module; the current sampling circuit module can detect current and voltage data generated by the socket circuit and feed the data back to the control module;
the human body proximity sensor is arranged on the surface of the socket module, the output end of the human body proximity sensor is electrically connected with the third input end of the control module, and the human body proximity sensor is used for detecting the distance between a hand and the surface of the socket when the plug is plugged.
The working principle is as follows: when the socket module is not used, the second input end of the alternating current contactor is connected with the output end voltage of the power transformation module, the voltage after transformation is transmitted to the alternating current contactor and is connected with the low-voltage safety voltage after transformation, the risk of high-voltage electric shock can be avoided, when a plug of an electrical appliance load is inserted into the socket module, a loop is formed, due to the fact that low voltage exists in a jack, generated current is small, electric arc is not easy to generate to cause electric shock and electric corrosion, the current sampling circuit module can send an electrical appliance connection signal to the control module after recognizing the generated small current, the control module sends a power switching signal to the alternating current contactor, the alternating current contactor receives the signal and then switches to mains supply voltage, normal power supply of the electrical appliance is achieved, the current sampling circuit module can detect current, the control module carries out real-time monitoring on the power of the electrical appliance, the working condition of the electrical appliance is known, and the abnormal condition of the working (power) of the electrical appliance is found in time. When the electric appliance is used and the human hand is about to pull out the plug, when the human body approach induction sensor detects that the distance between the human hand and the surface of the socket is smaller than a certain threshold value, the control module sends a power supply switching signal to the alternating current contactor to switch the alternating current contactor to a low-voltage safety voltage, a low-voltage loop is guaranteed in the jack of the socket before the plug is pulled out, electric shock and electric corrosion caused by electric arc generated when the plug is pulled out are avoided, the use safety of the socket module is improved, and the service life of a metal contact in the jack of the plug is prolonged.
In addition, if the circuit of the alternating current contactor is not provided with the series circuit breaker, the alternating current contactor can be further provided with a third input end which is in idle connection, the input voltage of the third input end is zero or is connected with a fuse, and after the current sampling circuit module identifies a short-circuit large current, the alternating current contactor is switched to the third input end to ensure that the input voltage is zero or is fused, a circuit is disconnected, and the circuit safety is ensured. If the voltage change-over switch only has two input ends, the output end of the power supply transformation module can adjust the voltage to be zero when in short circuit, and the short-circuit protection function is also realized.
And the power display is electrically connected with the third output end of the control module and used for displaying the total load power, the total limit power, the load power and the limit power of the current socket module and the numerical value or percentage of the load power of other socket modules in an image mode. The power display can be a display screen or a water lamp structure, and a user can know the power condition of each electric appliance in the circuit by observing the power display, so that the overload electric appliance is prevented from being accessed, and the safety of the circuit is ensured.
And the current sampling circuit module and the alternating current contactor are provided with delay controllers, and when the time from the insertion and extraction of the load to the re-insertion of the socket module is less than the threshold value (less than or equal to 3 s) of the delay controller, the delay controller prohibits the alternating current contactor from switching from low voltage to high voltage. The time delay controller can avoid frequent switching of the alternating current contactor caused by repeated plugging and unplugging of the plug, and avoid voltage fluctuation and shortened service life of the switching device.
The second output end of the control module is electrically connected with the second input end of the power supply transformation module and used for setting the output voltage of the power supply transformation module, the output voltage of the power supply transformation module is 5V, 12V or 25V, and safe voltage can be selected more as required.
The human body proximity sensor is a pyroelectric sensor, the numerical range of the maximum detection distance is 30-50 mm, the distance between a human hand and the socket can be detected through infrared induction, and the interference of proximity of other objects is avoided.
The leakage protection switch unit is connected in series between the alternating current contactor and the socket module, the fourth output end of the control module is electrically connected with the leakage protection switch unit, and the socket module is provided with an alarm indicator lamp electrically connected with the leakage protection switch unit. The control module can carry out independent electric leakage detection and on-off control to every socket through earth leakage protection switch unit (switch), improves the security that the circuit used, avoids a socket electric leakage to cause the main brake disconnection, avoids influencing other electrical apparatus work, reduces the electric fault loss. After the leakage protection switch unit trips, the alarm indicator lamp is turned on to prompt, and after the leakage protection switch unit is switched on, the alarm indicator lamp is turned off.
Socket module surface is equipped with the jack, and the jack internal fixation is provided with the seal cover, and the seal cover is equipped with V type elasticity clip outward, socket module slidable mounting has the crane, crane one end and V type elasticity clip fixed connection, and the lift drive module is connected to the crane other end, and lift drive module is close inductive transducer electric connection with the human body. The lift drive module can drive crane and V type elasticity clip and carry out the lift removal, when the plug will go out, the human body is close inductive pick up and detects the staff and is close, lift drive module drive V type elasticity clip moves away, loosen the seal cover, inserted sheet on the plug can pass behind the seal cover and contact with the downthehole metal clamping piece of jack, the back is kept away from to the staff, lift drive module drive V type elasticity clip moves back and resets, carry out the centre gripping to the seal cover, fixed frictional force between increase seal cover and the inserted sheet, make the plug be difficult to become flexible and drop. When the plug is to be pulled out, the human body approach induction sensor detects that the human hand approaches again, the lifting driving module drives the V-shaped elastic clamp to move away, and the sealing sleeve is loosened, so that the plug is convenient to pull out; after the plug and the hand are moved away together, the lifting driving module drives the V-shaped elastic clamp to move back and reset again, the sealing sleeve is clamped, the jack is sealed, and the waterproof and dustproof effects on the jack are achieved.
The control module is connected with the central control panel and is connected with the intelligent home system, the socket module is provided with a voice unit, the voice unit is electrically connected with the central control panel, and voice communication control can be carried out between the voice unit on the socket and artificial intelligence software.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.
Claims (9)
1. The utility model provides an electrical apparatus power consumption intelligence perception device which characterized in that: the power supply device comprises a power supply transformation module, a control module, a socket module, an alternating current contactor and a current sampling circuit module; the power supply transformation module is electrically connected with the alternating current contactor; the alternating current contactor is electrically connected with the socket module; the current sampling circuit module electric connection in the socket module with between the control module, the control module with ac contactor's controlled end electric connection, the current sampling circuit module includes sampling resistor, low pass filter circuit and difference operational amplifier circuit, sampling resistor connects in series in the circuit of socket module, and sampling resistor connects low pass filter circuit, and low pass filter circuit connects difference operational amplifier circuit, and difference operational amplifier circuit passes through analog to digital converter and connects control module.
2. The intelligent sensing device for the electricity consumption of the electric appliance according to claim 1, wherein: the device also comprises an overvoltage and undervoltage protection module and a human body proximity induction sensor, wherein the overvoltage and undervoltage protection module is electrically connected with the mains supply; the alternating current contactor is electrically connected with the over-voltage and under-voltage protection module, the over-voltage and under-voltage protection module is electrically connected with the control module, and the over-voltage and under-voltage protection module is electrically connected with the power supply transformation module; the human body proximity sensor is arranged on the surface of the socket module and electrically connected with the control module.
3. The intelligent sensing device for the electricity consumption of the electric appliance according to claim 1, wherein: the socket module is provided with a power display, and the power display is electrically connected with the control module and used for displaying the total load power, the total limit power, the load power and the limit power of the current socket module and the numerical value or percentage of the load power of the rest socket modules in an image mode.
4. The intelligent sensing device for the electricity consumption of the electric appliance according to claim 1, wherein: the current sampling circuit module and the alternating current contactor are provided with delay controllers, and when the time from the insertion and extraction of the load to the re-insertion of the socket module is less than the threshold value of the delay controller, the delay controller prohibits the alternating current contactor from switching from low voltage to high voltage.
5. The intelligent sensing device for the electricity consumption of the electric appliance according to claim 1, wherein: the control module is electrically connected with the power supply transformation module and used for setting the output voltage of the power supply transformation module, and the output voltage of the power supply transformation module is 25V.
6. The intelligent sensing device for the electricity consumption of the electric appliance according to claim 1, wherein: the human body approach induction sensor is a pyroelectric sensor, and the numerical range of the maximum value of the detection distance is 30mm-50mm.
7. The intelligent sensing device for the electricity consumption of the electric appliance according to claim 1, wherein: an earth leakage protection switch unit is connected in series between the alternating current contactor and the socket module, the control module is electrically connected with the earth leakage protection switch unit, and an alarm indicator lamp electrically connected with the earth leakage protection switch unit is arranged on the socket module.
8. The intelligent sensing device for the electricity consumption of the electric appliance according to claim 1, wherein: socket module surface is equipped with the jack, and the jack internal fixation is provided with the seal cover, and the seal cover is equipped with V type elasticity clip outward, socket module slidable mounting has the crane, crane one end and V type elasticity clip fixed connection, and the lift drive module is connected to the crane other end, and lift drive module is close inductive transducer electric connection with the human body.
9. The intelligent sensing device for the electricity consumption of the electric appliance according to claim 1, wherein: the control module is connected with the central control panel, the socket module is provided with a voice unit, and the voice unit is electrically connected with the central control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210948803.4A CN115275721A (en) | 2022-08-09 | 2022-08-09 | Intelligent sensing device for electricity consumption of electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210948803.4A CN115275721A (en) | 2022-08-09 | 2022-08-09 | Intelligent sensing device for electricity consumption of electric appliance |
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| Publication Number | Publication Date |
|---|---|
| CN115275721A true CN115275721A (en) | 2022-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210948803.4A Pending CN115275721A (en) | 2022-08-09 | 2022-08-09 | Intelligent sensing device for electricity consumption of electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115275721A (en) |
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2022
- 2022-08-09 CN CN202210948803.4A patent/CN115275721A/en active Pending
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