CN113866523A - Electrical phase detection device and method for household appliance and household appliance - Google Patents
Electrical phase detection device and method for household appliance and household appliance Download PDFInfo
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- CN113866523A CN113866523A CN202010615137.3A CN202010615137A CN113866523A CN 113866523 A CN113866523 A CN 113866523A CN 202010615137 A CN202010615137 A CN 202010615137A CN 113866523 A CN113866523 A CN 113866523A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/16—Measuring asymmetry of polyphase networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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Abstract
The invention discloses an electric phase detection device and method for household electrical appliance and household electrical appliance, wherein the device comprises: the first photoelectric detection unit is used for detecting whether a potential difference exists between a zero line and a ground wire of the three-phase socket when the three-phase plug is connected to the three-phase socket so as to output a first detection signal; the second photoelectric detection unit is used for detecting whether a potential difference exists between a zero line and a live line of the three-phase socket when the three-phase plug is connected to the three-phase socket so as to output a second detection signal; the third photoelectric detection unit is used for detecting whether potential difference exists between a live wire and a ground wire of the three-phase socket or not when the three-phase plug is connected to the three-phase socket so as to output a third detection signal; and the control unit judges whether the three-phase socket has a wiring fault according to the first detection signal, the second detection signal and the third detection signal so as to detect the power utilization phase of the household appliance. Therefore, when the three-phase socket has a wiring fault, the abnormal electricity utilization phase of the household appliance is detected in time, and therefore electricity utilization safety is ensured.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an electric phase detection device for household appliances, an electric phase detection method for household appliances and household appliances.
Background
Since there are cases where the installation of electricity is not standardized, for example, no ground wire is disposed, or a zero line is reversely connected to a live line, it is very easy to cause an electric shock safety accident or the household appliance cannot normally operate, and for this reason, the household appliance of the related art is generally provided with a detection device to ensure the safety of electricity consumption of a user.
However, the detection device of the related art can only achieve leakage detection and ground wire detection, but cannot detect whether the zero line and the live line are reversely connected, so that abnormality cannot be timely eliminated, and normal use of a user is affected.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first object of the present invention is to provide an electric phase detection apparatus for a home appliance, which can detect an abnormal phase of power consumption of the home appliance in time when a connection failure occurs in a three-phase socket, thereby ensuring power consumption safety.
A second object is to propose a household appliance.
A third object is to propose an electrical phase detection method for household appliances.
In order to achieve the above object, an electrical phase detecting apparatus for a household electrical appliance according to an embodiment of a first aspect of the present invention includes a first photoelectric detection unit, where the first photoelectric detection unit is connected between a zero line and a ground line of a three-phase plug of the household electrical appliance, and the first photoelectric detection unit is configured to detect whether a potential difference exists between the zero line and the ground line of a three-phase socket when the three-phase plug is connected to the three-phase socket, so as to output a first detection signal; the second photoelectric detection unit is connected between the zero line and the live line of the three-phase plug and is used for detecting whether a potential difference exists between the zero line and the live line of the three-phase socket when the three-phase plug is connected to the three-phase socket so as to output a second detection signal; the third photoelectric detection unit is connected between the live wire and the ground wire of the three-phase plug and is used for detecting whether the potential difference exists between the live wire and the ground wire of the three-phase socket when the three-phase plug is connected to the three-phase socket so as to output a third detection signal; and the control unit is respectively connected with the first photoelectric detection unit, the second photoelectric detection unit and the third photoelectric detection unit, and judges whether the three-phase socket has a wiring fault to detect the power utilization phase of the household appliance according to the first detection signal, the second detection signal and the third detection signal.
According to the electric phase detection device for the household appliance, whether a potential difference exists between a zero line and a ground line of a three-phase socket or not is detected through the first photoelectric detection unit when the three-phase plug is connected to the three-phase socket so as to output a first detection signal, whether a potential difference exists between a zero line and a live line of the three-phase socket or not is detected through the second photoelectric detection unit when the three-phase plug is connected to the three-phase socket so as to output a second detection signal, whether a potential difference exists between a live line and a ground line of the three-phase socket or not is detected through the third photoelectric detection unit so as to output a third detection signal, and then whether a wiring fault exists in the three-phase socket or not is judged through the control unit according to the first detection signal, the second detection signal and the third detection signal so as to detect the power utilization phase of the household appliance. Therefore, when the three-phase socket has a wiring fault, the abnormal electricity utilization phase of the household appliance is detected in time, and therefore electricity utilization safety is ensured.
In addition, the electrical phase detection apparatus for a home appliance according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the present invention, the positive terminal of the first photoelectric detection unit is connected to the zero line of the three-phase plug, the negative terminal of the first photoelectric detection unit is connected to the ground line of the three-phase plug, the positive terminal of the second photoelectric detection unit is connected to the zero line of the three-phase plug, the negative terminal of the second photoelectric detection unit is connected to the live line of the three-phase plug, the positive terminal of the third photoelectric detection unit is connected to the live line of the three-phase plug, and the negative terminal of the third photoelectric detection unit is connected to the ground line of the three-phase plug.
According to an embodiment of the present invention, the first photoelectric detection unit includes a first diode, a first resistor, and a first photoelectric switch, an anode of the first diode is connected to a zero line of the three-phase plug, a cathode of the first diode is connected to one end of the first resistor, another end of the first resistor is connected to an anode of a transmitting tube in the first photoelectric switch, a cathode of the transmitting tube in the first photoelectric switch is connected to a ground line of the three-phase plug, and a receiving tube in the first photoelectric switch is connected to the control unit.
According to an embodiment of the present invention, the second photoelectric detection unit includes a second diode, a second resistor, and a second photoelectric switch, an anode of the second diode is connected to a zero line of the three-phase plug, a cathode of the second diode is connected to one end of the second resistor, another end of the second resistor is connected to an anode of a transmitting tube in the second photoelectric switch, a cathode of the transmitting tube in the second photoelectric switch is connected to a live line of the three-phase plug, and a receiving tube in the second photoelectric switch is connected to the control unit.
According to an embodiment of the present invention, the third photo-detection unit includes a third diode, a third resistor, and a third photo-switch, an anode of the third diode is connected to the live line of the three-phase plug, a cathode of the third diode is connected to one end of the third resistor, another end of the third resistor is connected to an anode of a transmitting tube in the third photo-switch, a cathode of the transmitting tube in the third photo-switch is connected to the ground line of the three-phase plug, and a receiving tube in the third photo-switch is connected to the control unit.
According to an embodiment of the present invention, the control unit correspondingly determines whether a first photoelectric switch in the first photoelectric detection unit, a second photoelectric switch in the second photoelectric detection unit, and a third photoelectric switch in the third photoelectric detection unit are on according to the first detection signal, the second detection signal, and the third detection signal, wherein when the first photoelectric switch and the second photoelectric switch are on, and the third photoelectric switch is off, the control unit determines that a live wire and a neutral wire of the three-phase socket are in a reversed phase, and a ground wire is normal; when the first photoelectric switch and the third photoelectric switch are turned off and the second photoelectric switch is turned on, the control unit judges that a live wire and a zero wire of the three-phase socket are normal and a ground wire is in a phase failure; when the first photoelectric switch and the third photoelectric switch are switched on and the second photoelectric switch is switched off, the control unit judges that the live wire and the ground wire of the three-phase socket are in reverse phase and the zero line is normal; and when the first photoelectric switch, the second photoelectric switch and the third photoelectric switch are all switched on, the control unit judges that the live wire, the ground wire and the zero wire of the three-phase socket are normal.
According to one embodiment of the invention, the electric phase detection device for the household appliance further comprises a prompting unit, wherein the prompting unit is connected with the control unit, and when a live wire and a zero wire of the three-phase socket are in opposite phases and a ground wire is normal, the control unit controls the prompting unit to send out first prompting information and allows the household appliance to work normally; when the live wire and the zero wire of the three-phase socket are normal and the ground wire is in phase failure, the control unit controls the prompting unit to send out second prompting information and forbids the household appliance to work; and when the live wire and the ground wire of the three-phase socket are in reverse phase and the zero line is normal, the control unit controls the prompting unit to send out third prompting information and forbids the household appliance to work.
In order to achieve the above object, an electrical home appliance according to an embodiment of the present invention includes the electrical phase detection apparatus for an electrical home appliance as described above.
According to the household appliance provided by the embodiment of the invention, by adopting the electric phase detection device for the household appliance, the abnormal electricity utilization phase of the household appliance can be detected in time when the three-phase socket has a wiring fault, so that the electricity utilization safety is ensured.
In order to achieve the above object, a third aspect of the present invention provides an electrical phase detection method for a home appliance device, where the home appliance device includes a three-phase plug, a first photoelectric detection unit, a second photoelectric detection unit, and a third photoelectric detection unit, the first photoelectric detection unit is connected between a zero line and a ground line of the three-phase plug of the home appliance device, the second photoelectric detection unit is connected between a zero line and a live line of the three-phase plug, and the third photoelectric detection unit is connected between a live line and a ground line of the three-phase plug, the electrical phase detection method includes the following steps: when the three-phase plug is connected to a three-phase socket, the first photoelectric detection unit detects whether a potential difference exists between a zero line and a ground line of the three-phase socket so as to output a first detection signal, the second photoelectric detection unit detects whether a potential difference exists between a zero line and a live line of the three-phase socket so as to output a second detection signal, and the third photoelectric detection unit detects whether a potential difference exists between a live line and a ground line of the three-phase socket so as to output a third detection signal; and judging whether the three-phase socket has a wiring fault according to the first detection signal, the second detection signal and the third detection signal so as to detect the power utilization phase of the household appliance.
According to the electric phase detection method for the household appliance, when the three-phase plug is connected to the three-phase socket, whether a potential difference exists between a zero line and a ground line of the three-phase socket or not is detected through the first photoelectric detection unit to output a first detection signal, whether a potential difference exists between the zero line and a live line of the three-phase socket or not is detected through the second photoelectric detection unit to output a second detection signal, whether a potential difference exists between the live line and the ground line of the three-phase socket or not is detected through the third photoelectric detection unit to output a third detection signal, and whether a wiring fault exists in the three-phase socket or not is judged according to the first detection signal, the second detection signal and the third detection signal to detect the power utilization phase of the household appliance. Therefore, when the three-phase socket has a wiring fault, the abnormal electricity utilization phase of the household appliance is detected in time, and therefore electricity utilization safety is ensured.
In addition, the electrical phase detection method for the household electrical appliance according to the above embodiment of the present invention may further include the following additional technical features:
according to an embodiment of the present invention, determining whether there is a wiring fault in the three-phase socket according to the first detection signal, the second detection signal and the third detection signal includes: correspondingly judging whether a first photoelectric switch in a first photoelectric detection unit, a second photoelectric switch in a second photoelectric detection unit and a third photoelectric switch in a third photoelectric detection unit are conducted or not according to the first detection signal, the second detection signal and the third detection signal, wherein when the first photoelectric switch and the second photoelectric switch are conducted and the third photoelectric switch is turned off, the phase of a live wire and a zero wire of the three-phase socket is judged to be reversed, and the ground wire is judged to be normal; when the first photoelectric switch and the third photoelectric switch are turned off and the second photoelectric switch is turned on, judging that a live wire and a zero wire of the three-phase socket are normal and a ground wire is in a phase failure; when the first photoelectric switch and the third photoelectric switch are switched on and the second photoelectric switch is switched off, judging that the live wire and the ground wire of the three-phase socket are in reverse phase and the zero line is normal; and when the first photoelectric switch, the second photoelectric switch and the third photoelectric switch are all switched on, judging that the live wire, the ground wire and the zero wire of the three-phase socket are normal.
According to one embodiment of the invention, when the live wire and the zero wire of the three-phase socket are in opposite phase and the ground wire is normal, the household appliance is controlled to send out first prompt information, and the household appliance is allowed to work normally; when the live wire and the zero wire of the three-phase socket are normal and the ground wire is out of phase, controlling the household appliance to send out second prompt information and forbidding the household appliance to work; and when the live wire and the ground wire of the three-phase socket are in reverse phase and the zero line is normal, controlling the household appliance to send out third prompt information and forbidding the household appliance to work.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a block schematic diagram of an electrical phase detection apparatus for a home appliance according to an embodiment of the present invention;
FIG. 2 is an electrical schematic of an electrical phase detection apparatus according to one embodiment of the present invention;
fig. 3 is a block diagram of an electrical phase detection apparatus for a home appliance according to an embodiment of the present invention;
fig. 4 is a block diagram of a home device according to an embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating an electrical phase detection method for an electric home appliance according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating an electrical phase detection method for a home appliance according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
An electrical phase detection apparatus for a home appliance, an electrical phase detection method for a home appliance, and a home appliance according to embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a block diagram illustrating an electrical phase detection apparatus for a home appliance according to an embodiment of the present invention.
As shown in fig. 1, the electrical phase detection apparatus 100 for a home appliance includes a first photo-detection unit 10, a second photo-detection unit 20, a third photo-detection unit 30, and a control unit 40.
Specifically, as shown in fig. 1, the first photoelectric detection unit 10 is connected between a zero line and a ground line of a three-phase plug of the household appliance, and the first photoelectric detection unit 10 is configured to detect whether there is a potential difference between the zero line and the ground line of a three-phase socket when the three-phase plug is connected to the three-phase socket so as to output a first detection signal; the second photoelectric detection unit 20 is connected between the zero line and the live line of the three-phase plug, and the second photoelectric detection unit 20 is used for detecting whether a potential difference exists between the zero line and the live line of the three-phase socket when the three-phase plug is connected to the three-phase socket so as to output a second detection signal; the third photoelectric detection unit 30 is connected between the live wire and the ground wire of the three-phase plug, and the third photoelectric detection unit 30 is configured to detect whether a potential difference exists between the live wire and the ground wire of the three-phase socket when the three-phase plug is connected to the three-phase socket, so as to output a third detection signal; the control unit 40 is respectively connected with the first photoelectric detection unit 10, the second photoelectric detection unit 20 and the third photoelectric detection unit 30, and the control unit 40 judges whether a wiring fault exists in the three-phase socket according to the first detection signal, the second detection signal and the third detection signal so as to detect the power utilization phase of the household appliance.
It is understood that when the three-phase plug is connected to the three-phase socket, if a potential difference exists between the zero line and the ground line of the three-phase socket, the first detection signal is output through the first photodetecting unit 10, when the three-phase plug is connected to the three-phase socket, if a potential difference exists between the zero line and the live line of the three-phase socket, the second detection signal is output through the second photodetecting unit 20, and when the three-phase plug is connected to the three-phase socket, if a potential difference exists between the live line and the ground line of the three-phase socket, the third detection signal is output through the third detecting unit 30, and further, the first detection signal, the second detection signal, and the third detection signal are received through the control unit 40.
Further, as shown in fig. 2, the positive terminal of the first photoelectric detection unit 10 is connected to the zero line of the three-phase plug, the negative terminal of the first photoelectric detection unit 10 is connected to the ground line of the three-phase plug, the positive terminal of the second photoelectric detection unit 20 is connected to the zero line of the three-phase plug, the negative terminal of the second photoelectric detection unit 20 is connected to the live line of the three-phase plug, the positive terminal of the third photoelectric detection unit 30 is connected to the live line of the three-phase plug, and the negative terminal of the third photoelectric detection unit 30 is connected to the ground line of the three-phase plug.
It will be appreciated that the first photo detection unit 10 may be adapted to detect a potential difference between the neutral line and the ground line, the second photo detection unit 20 may be adapted to detect a potential difference between the neutral line and the live line, and the third photo detection unit 30 may be adapted to detect a potential difference between the live line and the ground line.
Further, as shown in fig. 2, the first photodetection unit 10 includes a first diode D1, a first resistor R1, and a first photoelectric switch K1, an anode of the first diode D1 is connected to the neutral line of the three-phase plug, a cathode of the first diode D1 is connected to one end of the first resistor R1, another end of the first resistor R1 is connected to an anode of the emitter of the first photoelectric switch K1, a cathode of the emitter of the first photoelectric switch K1 is connected to the ground line of the three-phase plug, and a receiver of the first photoelectric switch K1 is connected to the control unit 40.
It is understood that if the first diode D1 is turned off and the first photo switch K1 is turned off, it can be considered that there is no potential difference between the zero line and the ground line of the three-phase socket, and at this time, the first photo detecting unit 10 does not output the first detection signal. And if the first diode D1 is turned on and the first photoelectric switch K1 is turned on, it can be considered that there is a potential difference between the zero line and the ground of the three-phase socket, and at this time, the first photoelectric detection unit 10 outputs the first detection signal, and the control unit 40 receives the first detection signal.
Further, as shown in fig. 2, the second photo-detecting unit 20 includes a second diode D2, a second resistor R2, and a second photo-switch K2, an anode of the second diode D2 is connected to the neutral line of the three-phase plug, a cathode of the second diode D2 is connected to one end of the second resistor R2, another end of the second resistor R2 is connected to an anode of the transmitting tube in the second photo-switch K2, a cathode of the transmitting tube in the second photo-switch K2 is connected to the live line of the three-phase plug, and a receiving tube in the second photo-switch K2 is connected to the control unit 40.
It is understood that if the second diode D2 is turned off and the second photo switch K2 is turned off, it can be considered that there is no potential difference between the zero line and the live line of the three-phase socket, and at this time, the second photo detecting unit 20 does not output the second detection signal. And if the second diode D2 is turned on and the second photoelectric switch K2 is turned on, it can be considered that there is a potential difference between the zero line and the live line of the three-phase socket, and at this time, the second photoelectric detection unit 20 outputs a second detection signal, and the control unit 40 receives the second detection signal.
Further, as shown in fig. 2, the third photo-detecting unit 30 includes a third diode D3, a third resistor R3 and a third photo-switch K3, an anode of the third diode D3 is connected to a live line of the three-phase plug, a cathode of the third diode D3 is connected to one end of the third resistor R3, another end of the third resistor R3 is connected to an anode of the emitter of the third photo-switch K3, a cathode of the emitter of the third photo-switch K3 is connected to a ground line of the three-phase plug, and a receiver of the third photo-switch K3 is connected to the control unit 40.
It is understood that if the third diode D3 is turned off and the third photo switch K3 is turned off, it can be considered that there is no potential difference between the live line and the ground line of the three-phase socket, and the third photo detecting unit 30 does not output the third detection signal. And if the third diode D3 is turned on and the third photoelectric switch K3 is turned on, it can be considered that there is a potential difference between the live wire and the ground wire of the three-phase socket, and at this time, the third photoelectric detection unit 30 outputs a third detection signal, and the control unit 40 receives the third detection signal.
It should be understood that, when the live wire, the ground wire and the neutral wire are all normal, there is no potential difference between the neutral wire and the ground wire of the three-phase socket, there is a potential difference between the neutral wire and the live wire of the three-phase socket, and there is a potential difference between the live wire and the ground wire of the three-phase socket, therefore, the electrical phase detecting apparatus 100 for a household appliance according to the embodiment of the present invention outputs the first detection signal, the second detection signal and the third detection signal through the first detection unit 10, the second detection unit 20 and the detection unit 30 based on the potential differences between the neutral wire, the live wire and the ground wire of the three-phase socket, so that the control unit 40 determines whether the live wire, the ground wire and the neutral wire are normal or not according to the first detection signal, the second detection signal and the third detection signal.
Further, the control unit 40 correspondingly determines whether the first photo-electric switch K1 in the first photo-electric detection unit 10, the second photo-electric switch K2 in the second photo-electric detection unit 20, and the third photo-electric switch K3 in the third photo-electric detection unit 30 are turned on according to the first detection signal, the second detection signal, and the third detection signal.
When the first photoelectric switch K1 and the second photoelectric switch K2 are turned on and the third photoelectric switch K3 is turned off, the control unit 40 determines that the phase of the live wire and the phase of the zero wire of the three-phase socket are reversed and the ground wire is normal; when the first photoelectric switch K1 and the third photoelectric switch K3 are turned off and the second photoelectric switch K2 is turned on, the control unit 40 determines that the live wire and the zero wire of the three-phase socket are normal and the ground wire is in a phase failure; when the first photoelectric switch K1 and the third photoelectric switch K3 are turned on and the second photoelectric switch K2 is turned off, the control unit 40 determines that the phase of the live wire and the phase of the ground wire of the three-phase socket are reversed and the zero line is normal; when the first photoelectric switch K1, the second photoelectric switch K2 and the third photoelectric switch K3 are all turned on, the control unit judges that the live wire, the ground wire and the zero wire of the three-phase socket are normal.
Specifically, when the first photoelectric switch K1 and the second photoelectric switch K2 are turned on and the third photoelectric switch K3 is turned off, that is, a potential difference exists between the zero line and the ground line of the three-phase socket, a potential difference exists between the zero line and the live line of the three-phase socket, and a potential difference does not exist between the live line and the ground line of the three-phase socket, at this time, the control unit 40 may determine that the live line and the zero line of the three-phase socket are reversed in phase and the ground line is normal based on the potential differences between the zero line, the ground line, and the live line.
When the first photoelectric switch K1 and the third photoelectric switch K3 are turned off and the second photoelectric switch K2 is turned on, that is, there is no potential difference between the zero line and the ground line of the three-phase socket, there is no potential difference between the live line and the ground line of the three-phase socket, and there is a potential difference between the zero line and the live line of the three-phase socket, at this time, the control unit 40 may determine that the live line and the zero line of the three-phase socket are normal, and the ground line is open-phase, based on the potential differences between the zero line, the ground line, and the live line.
When the first photoelectric switch K1 and the third photoelectric switch K3 are turned on and the second photoelectric switch K2 is turned off, that is, a potential difference exists between the zero line and the ground line of the three-phase socket, a potential difference exists between the live line and the ground line of the three-phase socket, and a potential difference does not exist between the zero line and the live line of the three-phase socket, at this time, the control unit 40 may determine that the live line and the ground line of the three-phase socket are reversed, and the zero line and the live line are normal based on the potential differences between the zero line, the ground line and the live line, respectively
When the first photoelectric switch K1, the second photoelectric switch K2, and the third photoelectric switch K3 are all turned on, that is, there is a potential difference between the zero line and the ground line of the three-phase socket, a potential difference between the zero line and the live line of the three-phase socket, and a potential difference between the live line and the ground line of the three-phase socket, the control unit 40 can determine that the live line, the ground line, and the zero line of the three-phase socket are normal.
Further, as shown in fig. 3, the electrical phase detection apparatus 100 for a home appliance further includes a prompting unit 50, and the prompting unit 50 is connected to the control unit 40.
That is, the control unit 40 of the electrical phase detection apparatus 100 for a home appliance may also send a prompt message to the user through the prompt unit 50 in determining whether the zero line, the live line, and the ground line are normal, so as to inform the user of the abnormal phase of the power consumption of the home appliance and the specific information of the abnormal phase of the power consumption.
Specifically, when the phase of the live wire and the phase of the zero line of the three-phase socket are reversed and the ground wire is normal, the control unit 40 controls the prompting unit 50 to send out first prompting information and allows the household appliance to work normally; when the live wire and the zero wire of the three-phase socket are normal and the ground wire is in phase failure, the control unit 40 controls the prompting unit 50 to send out second prompting information and forbids the household appliance to work; when the live wire and the ground wire of the three-phase socket are in reverse phase and the zero wire is normal, the control unit 40 controls the prompting unit 50 to send out third prompting information and forbids the household appliance to work.
It should be noted that the first prompt information is used to prompt the user to reverse the phase of the live and neutral wires, for example, the icon of the reverse signal of the live and neutral wires flashes, the second prompt information is used to prompt the user to have no ground wire, for example, the icon of the no ground wire flashes, and the third prompt information is used to prompt the user to have a charged ground wire, for example, a buzzer sounds long, so as to warn the user not to touch the household appliance, thereby avoiding power consumption accidents.
In summary, according to the electrical phase detecting apparatus for a household electrical appliance of the embodiments of the present invention, the first photoelectric detecting unit detects whether there is a potential difference between the zero line and the ground line of the three-phase socket when the three-phase plug is connected to the three-phase socket to output the first detection signal, the second photoelectric detecting unit detects whether there is a potential difference between the zero line and the live line of the three-phase socket when the three-phase plug is connected to the three-phase socket to output the second detection signal, and the third photoelectric detecting unit detects whether there is a potential difference between the live line and the ground line of the three-phase socket when the three-phase plug is connected to the three-phase socket to output the third detection signal, and the control unit determines whether there is a connection fault in the three-phase socket according to the first detection signal, the second detection signal, and the third detection signal to detect the power utilization phase of the household electrical appliance. Therefore, when the three-phase socket has a wiring fault, the abnormal electricity utilization phase of the household appliance is detected in time, and therefore electricity utilization safety is ensured.
Fig. 4 is a block diagram of a home device according to an embodiment of the invention.
As shown in fig. 4, the home appliance 1000 includes the electrical phase detection apparatus 100 for a home appliance according to the foregoing embodiment, and can implement a specific implementation manner corresponding to the electrical phase detection apparatus 100 for a home appliance one to one, which is not described herein again.
Alternatively, the home appliance may be an electric water heater, a refrigerator, an air conditioner, or an electric cooker.
In summary, according to the household electrical appliance of the embodiment of the present invention, by using the electrical phase detection apparatus for a household electrical appliance, when a connection fault exists in a three-phase socket, an electrical phase abnormality of the household electrical appliance can be detected in time, so as to ensure electrical safety.
Further, an embodiment of the present invention further provides an electrical phase detection method for a home appliance device, where the home appliance device includes a three-phase plug, a first photoelectric detection unit, a second photoelectric detection unit, and a third photoelectric detection unit, the first photoelectric detection unit is connected between a zero line and a ground line of the three-phase plug of the home appliance device, the second photoelectric detection unit is connected between a zero line and a live line of the three-phase plug, and the third photoelectric detection unit is connected between a live line and a ground line of the three-phase plug, as shown in fig. 5, the electrical phase detection method includes the following steps:
s101, when the three-phase plug is connected to the three-phase socket, the first photoelectric detection unit detects whether a potential difference exists between a zero line and a ground line of the three-phase socket to output a first detection signal, the second photoelectric detection unit detects whether a potential difference exists between a zero line and a live line of the three-phase socket to output a second detection signal, and the third photoelectric detection unit detects whether a potential difference exists between a live line and a ground line of the three-phase socket to output a third detection signal.
And S102, judging whether the three-phase socket has a wiring fault according to the first detection signal, the second detection signal and the third detection signal so as to detect the power utilization phase of the household appliance.
It can be understood that, when the three-phase plug is connected to the three-phase socket, if it is detected that there is a potential difference between the zero line and the ground line of the three-phase socket, the first photoelectric detection unit outputs a first detection signal, when the three-phase plug is connected to the three-phase socket, if it is detected that there is a potential difference between the zero line and the live line of the three-phase socket, the second photoelectric detection unit outputs a second detection signal, and when the three-phase plug is connected to the three-phase socket, if it is detected that there is a potential difference between the live line and the ground line of the three-phase socket, the third detection unit outputs a third detection signal, thereby, whether there is a wiring fault in the three-phase socket to detect the power utilization phase of the household appliance is determined according to the first detection signal, the second detection signal and the third detection signal.
Further, as shown in fig. 6, determining whether there is a wiring fault in the three-phase socket according to the first detection signal, the second detection signal and the third detection signal includes:
s201, correspondingly judging whether a first photoelectric switch in a first photoelectric detection unit, a second photoelectric switch in a second photoelectric detection unit and a third photoelectric switch in a third photoelectric detection unit are conducted or not according to the first detection signal, the second detection signal and the third detection signal.
And S2021, when the first photoelectric switch and the second photoelectric switch are switched on and the third photoelectric switch is switched off, judging that the phase of the live wire and the phase of the zero wire of the three-phase socket are reversed and the ground wire of the three-phase socket is normal.
And S2022, when the first photoelectric switch and the third photoelectric switch are turned off and the second photoelectric switch is turned on, judging that the live wire and the zero wire of the three-phase socket are normal and the ground wire is in a phase failure.
And S2023, when the first photoelectric switch and the third photoelectric switch are switched on and the second photoelectric switch is switched off, judging that the live wire and the ground wire of the three-phase socket are in reverse phase and the zero line is normal.
And S2024, when the first photoelectric switch, the second photoelectric switch and the third photoelectric switch are all conducted, judging that the live wire, the ground wire and the zero wire of the three-phase socket are normal.
That is to say, after receiving the first detection signal, the second detection signal and the third detection signal, the electrical phase detection method for a household appliance according to the embodiment of the present invention can further determine whether the first photoelectric switch in the first photoelectric detection unit, the second photoelectric switch in the second photoelectric detection unit and the third photoelectric switch in the third photoelectric detection unit are turned on according to the first detection signal, the second detection signal and the third detection signal, so as to determine whether the zero line, the live line and the ground line of the three-phase socket are normal according to the switching states of the first photoelectric switch, the second photoelectric switch and the third photoelectric switch.
Further, as shown in fig. 6, after determining whether there is a wiring fault in the three-phase socket according to the first detection signal, the second detection signal and the third detection signal, the method further includes:
s3011, when the phase of the live wire and the phase of the zero line of the three-phase socket are reversed and the ground wire is normal, the household appliance is controlled to send out first prompt information, and the household appliance is allowed to work normally.
And S3012, when the live wire and the zero wire of the three-phase socket are normal and the ground wire is in a phase failure, controlling the household appliance to send out second prompt information and prohibiting the household appliance from working.
And S3013, when the live wire and the ground wire of the three-phase socket are in opposite phase and the zero line is normal, controlling the household appliance to send out third prompt information and prohibiting the household appliance from working.
That is to say, after determining whether the three-phase socket has the wiring fault, the method for detecting the electrical phase of the household electrical appliance according to the embodiment of the present invention can select the corresponding prompt information according to the specific type of the wiring fault to remind the user, and can control the household electrical appliance according to the specific type of the wiring fault.
It should be noted that the electrical phase detection method for a home appliance in the embodiment of the present invention corresponds to the specific implementation of the electrical phase detection apparatus for a home appliance in the embodiment of the present invention, and details are not repeated herein.
In summary, according to the electrical phase detecting method for a household electrical appliance according to the embodiment of the present invention, when a three-phase plug is connected to a three-phase socket, a first photoelectric detecting unit detects whether a potential difference exists between a zero line and a ground line of the three-phase socket to output a first detection signal, a second photoelectric detecting unit detects whether a potential difference exists between the zero line and a live line of the three-phase socket to output a second detection signal, and a third photoelectric detecting unit detects whether a potential difference exists between the live line and the ground line of the three-phase socket to output a third detection signal, and further, whether a wiring fault exists in the three-phase socket is determined according to the first detection signal, the second detection signal, and the third detection signal to detect an electricity utilization phase of the household electrical appliance. Therefore, when the three-phase socket has a wiring fault, the abnormal electricity utilization phase of the household appliance is detected in time, and therefore electricity utilization safety is ensured.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (11)
1. An electrical phase detection device for a household appliance, comprising
The first photoelectric detection unit is connected between a zero line and a ground wire of a three-phase plug of the household appliance device, and is used for detecting whether a potential difference exists between the zero line and the ground wire of the three-phase socket when the three-phase plug is connected to the three-phase socket so as to output a first detection signal;
the second photoelectric detection unit is connected between the zero line and the live line of the three-phase plug and is used for detecting whether a potential difference exists between the zero line and the live line of the three-phase socket when the three-phase plug is connected to the three-phase socket so as to output a second detection signal;
the third photoelectric detection unit is connected between the live wire and the ground wire of the three-phase plug and is used for detecting whether the potential difference exists between the live wire and the ground wire of the three-phase socket when the three-phase plug is connected to the three-phase socket so as to output a third detection signal;
and the control unit is respectively connected with the first photoelectric detection unit, the second photoelectric detection unit and the third photoelectric detection unit, and judges whether the three-phase socket has a wiring fault to detect the power utilization phase of the household appliance according to the first detection signal, the second detection signal and the third detection signal.
2. The electrical phase detecting apparatus for home appliances according to claim 1, wherein the positive terminal of the first photoelectric detection unit is connected to the zero line of the three-phase plug, the negative terminal of the first photoelectric detection unit is connected to the ground line of the three-phase plug, the positive terminal of the second photoelectric detection unit is connected to the zero line of the three-phase plug, the negative terminal of the second photoelectric detection unit is connected to the live line of the three-phase plug, the positive terminal of the third photoelectric detection unit is connected to the live line of the three-phase plug, and the negative terminal of the third photoelectric detection unit is connected to the ground line of the three-phase plug.
3. The electrical phase detecting device of claim 2, wherein the first photo detecting unit comprises a first diode, a first resistor and a first photo switch, an anode of the first diode is connected to a zero line of the three-phase plug, a cathode of the first diode is connected to one end of the first resistor, another end of the first resistor is connected to an anode of a transmitting tube in the first photo switch, a cathode of the transmitting tube in the first photo switch is connected to a ground line of the three-phase plug, and a receiving tube in the first photo switch is connected to the control unit.
4. The electrical phase detecting device for home appliances according to claim 3, wherein the second photoelectric detecting unit includes a second diode, a second resistor, and a second photoelectric switch, an anode of the second diode is connected to a neutral line of the three-phase plug, a cathode of the second diode is connected to one end of the second resistor, the other end of the second resistor is connected to an anode of a transmitting tube in the second photoelectric switch, a cathode of the transmitting tube in the second photoelectric switch is connected to a live line of the three-phase plug, and a receiving tube in the second photoelectric switch is connected to the control unit.
5. The electrical phase detecting device for home appliances according to claim 4, wherein the third photo detecting unit includes a third diode, a third resistor, and a third photo switch, an anode of the third diode is connected to the live line of the three-phase plug, a cathode of the third diode is connected to one end of the third resistor, the other end of the third resistor is connected to an anode of a transmitting tube in the third photo switch, a cathode of the transmitting tube in the third photo switch is connected to the ground line of the three-phase plug, and a receiving tube in the third photo switch is connected to the control unit.
6. The electrical phase detection apparatus for home appliances according to any one of claims 1 to 5, wherein the control unit determines whether a first photo switch in the first photo detection unit, a second photo switch in the second photo detection unit, and a third photo switch in the third photo detection unit are turned on according to the first detection signal, the second detection signal, and the third detection signal,
when the first photoelectric switch and the second photoelectric switch are switched on and the third photoelectric switch is switched off, the control unit judges that the phase of the live wire and the phase of the zero wire of the three-phase socket are reversed and the ground wire of the three-phase socket is normal;
when the first photoelectric switch and the third photoelectric switch are turned off and the second photoelectric switch is turned on, the control unit judges that a live wire and a zero wire of the three-phase socket are normal and a ground wire is in a phase failure;
when the first photoelectric switch and the third photoelectric switch are switched on and the second photoelectric switch is switched off, the control unit judges that the live wire and the ground wire of the three-phase socket are in reverse phase and the zero line is normal;
and when the first photoelectric switch, the second photoelectric switch and the third photoelectric switch are all switched on, the control unit judges that the live wire, the ground wire and the zero wire of the three-phase socket are normal.
7. The electrical phase detection apparatus for home appliances according to claim 6, further comprising a prompting unit connected to the control unit, wherein,
when the live wire and the zero wire of the three-phase socket are in opposite phase and the ground wire is normal, the control unit controls the prompting unit to send out first prompting information and allows the household appliance to work normally;
when the live wire and the zero wire of the three-phase socket are normal and the ground wire is in phase failure, the control unit controls the prompting unit to send out second prompting information and forbids the household appliance to work;
and when the live wire and the ground wire of the three-phase socket are in reverse phase and the zero line is normal, the control unit controls the prompting unit to send out third prompting information and forbids the household appliance to work.
8. An electric household appliance comprising an electric phase detection device for household appliances according to any one of claims 1 to 7.
9. The utility model provides an electric phase place detection method for household electrical appliances, its characterized in that, household electrical appliances include three-phase plug, first photoelectric detection unit, second photoelectric detection unit and third photoelectric detection unit, first photoelectric detection unit is connected to between the zero line and the ground wire of household electrical appliances's three-phase plug, second photoelectric detection unit is connected to between the zero line and the live wire of three-phase plug, third photoelectric detection unit is connected to between the live wire and the ground wire of three-phase plug, electric phase place detection method includes following step:
when the three-phase plug is connected to a three-phase socket, the first photoelectric detection unit detects whether a potential difference exists between a zero line and a ground line of the three-phase socket so as to output a first detection signal, the second photoelectric detection unit detects whether a potential difference exists between a zero line and a live line of the three-phase socket so as to output a second detection signal, and the third photoelectric detection unit detects whether a potential difference exists between a live line and a ground line of the three-phase socket so as to output a third detection signal;
and judging whether the three-phase socket has a wiring fault according to the first detection signal, the second detection signal and the third detection signal so as to detect the power utilization phase of the household appliance.
10. The electrical phase detection method for home appliances according to claim 9, wherein determining whether the three-phase outlet has a wiring fault according to the first detection signal, the second detection signal and the third detection signal comprises:
correspondingly judging whether a first photoelectric switch in the first photoelectric detection unit, a second photoelectric switch in the second photoelectric detection unit and a third photoelectric switch in the third photoelectric detection unit are conducted or not according to the first detection signal, the second detection signal and the third detection signal,
when the first photoelectric switch and the second photoelectric switch are switched on and the third photoelectric switch is switched off, judging that the phase of the live wire and the phase of the zero wire of the three-phase socket are reversed and the ground wire of the three-phase socket is normal;
when the first photoelectric switch and the third photoelectric switch are turned off and the second photoelectric switch is turned on, judging that a live wire and a zero wire of the three-phase socket are normal and a ground wire is in a phase failure;
when the first photoelectric switch and the third photoelectric switch are switched on and the second photoelectric switch is switched off, judging that the live wire and the ground wire of the three-phase socket are in reverse phase and the zero line is normal;
and when the first photoelectric switch, the second photoelectric switch and the third photoelectric switch are all switched on, judging that the live wire, the ground wire and the zero wire of the three-phase socket are normal.
11. The electrical phase detection method for home appliances according to claim 10, wherein,
when the live wire and the zero wire of the three-phase socket are in opposite phase and the ground wire is normal, controlling the household appliance to send out first prompt information and allowing the household appliance to work normally;
when the live wire and the zero wire of the three-phase socket are normal and the ground wire is out of phase, controlling the household appliance to send out second prompt information and forbidding the household appliance to work;
and when the live wire and the ground wire of the three-phase socket are in reverse phase and the zero line is normal, controlling the household appliance to send out third prompt information and forbidding the household appliance to work.
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| CN202010615137.3A CN113866523A (en) | 2020-06-30 | 2020-06-30 | Electrical phase detection device and method for household appliance and household appliance |
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| CN202010615137.3A CN113866523A (en) | 2020-06-30 | 2020-06-30 | Electrical phase detection device and method for household appliance and household appliance |
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