CN111781416A - Current monitoring device for household electrical appliance - Google Patents
Current monitoring device for household electrical appliance Download PDFInfo
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 64
- 238000005070 sampling Methods 0.000 claims abstract description 112
- 238000012544 monitoring process Methods 0.000 claims description 8
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- 238000010586 diagram Methods 0.000 description 11
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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Abstract
The invention discloses a current monitoring device of a household appliance, which relates to the technical field of the monitoring device of the household appliance, and comprises a current sampling module and a data processing module, wherein the current sampling module is used for collecting the total load current and/or partial load current of a plurality of household appliances, and the data processing module is used for processing the total load current or partial load current collected by the current sampling module to obtain the total load current and/or partial load current. The monitoring device can monitor the running current of a single load, can monitor the running currents of a plurality of loads simultaneously, and improves the use safety of household appliances.
Description
Technical Field
The invention relates to the technical field of household appliance monitoring devices, in particular to a household appliance current monitoring device.
Background
The existing household appliances do not monitor the total running current in real time, once the load of the household appliances is abnormal, the household appliances cannot be protected in time, dangers such as fire, smoke and the like easily occur, and the safety of users is damaged.
Disclosure of Invention
The technical problem to be solved by the invention is how to provide a household appliance current monitoring device which can monitor the running current of a single load and the running current of a plurality of loads simultaneously, and improve the use safety of household appliances.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a household appliance current monitoring device is characterized in that: the household appliance load current monitoring system comprises a current sampling module and a data processing module, wherein the current sampling module is used for collecting the load total current and/or the partial load current of a plurality of household appliances, the data processing module is used for processing the load total current or the partial load current collected by the current sampling module to obtain the load total current and/or the partial load current, and if the load working current is found to be in an abnormal state, a load power supply is cut off, and a user is prompted by an alarm.
The further technical scheme is as follows: the monitoring device comprises a power supply module, a live wire L is divided into two paths, the first path is connected with the live wire input end of the power supply module, the second path is connected with the output end of the power supply module, a zero line N is divided into a plurality of paths, the first path is connected with the zero line input end of the power supply module, other paths are respectively connected with zero line wiring ends of a plurality of loads and control circuits thereof, one end of a current sampling module is connected with the current output end of the power supply module, the other end of the current sampling module is divided into two paths, the first path is connected with the signal input end of a current data processing module, the second path is connected with the current input end of the first load and the control circuit thereof, the second path to the Nth load and the control circuit thereof are connected with the first load and the control circuit thereof in parallel, the signal output end of the current data processing module is connected with the signal input end of a control chip, the And the connection is used for providing working power supply for the connection.
The further technical scheme is as follows: the monitoring device comprises a power supply module, a live wire L is divided into two paths, the first path is connected with the live wire input end of the power supply module, the second path is connected with the power supply output end of the power supply module, a zero line N is divided into a plurality of paths, the first path is connected with the zero line input end of the power supply module, the other paths are respectively connected with zero line wiring ends of a plurality of loads and control circuits thereof, the current output end of the power supply module is divided into three paths, the first path is connected with the power supply input end of the first load and the control circuits thereof, the second path is connected with the power supply input end of the second load and the control circuits thereof, the third path is connected with one end of a current sampling module, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with the signal input end of a current data processing module, the other paths are respectively connected with the power supply input ends of the third load, and the power output end of the power supply module is respectively connected with the current data processing module and the power input end of the control chip and is used for providing a working power supply for the current data processing module and the control chip.
The further technical scheme is as follows: the monitoring device comprises a power supply module, wherein a live wire L is divided into a plurality of paths, the first path is connected with the live wire input end of the power supply module, the rest of the paths are respectively connected with the power supply input ends of a first load, a second load, a third load and a control circuit of the first load, the power supply output end of the power supply module is VCC, a zero line N is divided into two paths, the first path is connected with the zero line input end of the power supply module, the second path is connected with the zero line output end of the power supply module, the zero line output end of the power supply module is grounded, one end of a current sampling module is grounded, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with the signal input end of the current data processing module, the rest of the paths are respectively connected with the current output ends of the first load, the second load, the third load, the control circuit of the current data processing module For providing it with operating power.
The further technical scheme is as follows: the monitoring device comprises a power supply module, wherein a live wire L is divided into a plurality of paths, the first path is connected with the live wire input end of the power supply module, the other paths are respectively connected with the power supply input ends of first to Nth loads and control circuits thereof, the power supply output end of the power supply module is VCC, a zero line N is divided into two paths, the first path is connected with the zero line input end of the power supply module, the second path is connected with the zero line output end of the power supply module, the zero line output end of the power supply module is grounded, the other ends of the first load and the control circuit thereof, the second load and the control circuit thereof are grounded, one end of a current sampling module is grounded, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with the signal input end of a current data processing module, the other paths are respectively connected with the current output ends of third to Nth loads and the control, and the power output end of the power supply module is respectively connected with the current data processing module and the power input end of the control chip and is used for providing a working power supply for the current data processing module and the control chip.
The further technical scheme is as follows: monitoring device includes current sampling module, current sampling module's one end is connected with power VDD, and current sampling module's the other end divide into a plurality of ways, and first the way is connected with current data processing module's signal input part, and all the other ways are connected with first to Nth load and control circuit's power input part respectively, and first to Nth load and control circuit's the other end ground connection, current data processing module's signal output part is connected with control chip's signal input part, power VCC respectively with current data processing module and control chip's power input part are connected for it provides working power supply.
The further technical scheme is as follows: the monitoring device comprises a monitoring device current sampling module, a power supply VDD is divided into three paths, the first path is connected with a power supply input end of a first load and a control circuit of the first load, the second path is connected with a power supply input end of a second load and a control circuit of the second load, the third path is connected with one end of the current sampling module, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with a signal input end of a current data processing module, the other paths are respectively connected with power supply input ends of a third load, a fourth load, a fifth load, a sixth load and a control circuit of the third load, the fourth load, the fifth load and the control circuit of the third load, the fifth load, the sixth load, the fourth load, the.
The further technical scheme is as follows: monitoring device current sampling module, power VDD divide into a plurality of ways, and first the way is connected with current data processing module's signal input part, and all the other ways are connected with first to Nth load and control circuit's power input end respectively, and first to Nth load and control circuit's the other end is connected with current sampling module's one end, current sampling module's other end ground connection, current data processing module's signal output part is connected with control chip's signal input part, power VCC respectively with current data processing module and control chip's power input end are connected for it provides working power supply.
The further technical scheme is as follows: the monitoring device comprises a current sampling module, a power supply VDD is divided into a plurality of paths, the first path is connected with the power supply input end of a first load and a control circuit thereof, the second path is connected with the power supply input end of a second load and a control circuit thereof, the other ends of the first to the second loads and the control circuits thereof are grounded, the rest paths of the power supply VDD are respectively connected with the power supply input ends of the third to the Nth loads and the control circuits thereof, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with the signal input end of the current data processing module, all the other paths are respectively connected with the other ends of the third load, the Nth load and the control circuit thereof, the signal output end of the current data processing module is connected with the signal input end of the control chip, and the power VCC is respectively connected with the power input ends of the current data processing module and the control chip and is used for providing a working power supply for the current data processing module and the control chip.
The further technical scheme is as follows: the current sampling module comprises a sampling resistor, an alternating current transformer or a Hall sensor; when the current sampling module uses a sampling resistor, the sampling resistor comprises a resistor R1-a resistor R3 which are connected in series; or the sampling resistor comprises a resistor R1-a resistor R3 which are connected in parallel; or the sampling resistor comprises a resistor R1-a resistor R6, the resistor R1 is connected with one end of the resistor R5 through the resistor R2, the resistor R3-the resistor R4 are connected with the resistor R2 in parallel, and the resistor R6 is connected with the resistor R5 in parallel.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: this application is through sampling current sampling sensors such as sampling resistance, alternating current transformer or hall sensor, the total operating current of sampling electrical apparatus, and the signal that control chip that turns into electrical apparatus through the circuit current signal can read realizes the real time monitoring to electrical apparatus total operating current. The load of the household appliance is monitored in real time by monitoring the normal working current range of the single-path load or the multi-path load, once the working current of the load exceeds the allowable range, the load action is stopped immediately, and a user is prompted to be in an abnormal state by alarming.
The method and the device can monitor the total current of the strong current load and can also monitor the local current of the strong current load; the total current of the weak current load can be monitored, such as the current of a control chip, the coil current of a relay, the current of a light emitting diode, the trigger current of a silicon controlled rectifier, the current of a display screen and the current of a liquid crystal panel, and the safe use of the product is realized by monitoring the operating current of various weak current loads.
By current monitoring, a partial load operation state detection circuit can be omitted, and the reduction of the comprehensive cost can be realized. For example, the detection of a washing machine door lock closed circuit has a current monitoring circuit, and the circuit can be omitted through a logic control algorithm of a control chip, so that the circuit has equivalent functions.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic block diagram of a current monitoring device of a household appliance according to a first embodiment of the present invention;
fig. 2 is a schematic block diagram of a current monitoring device of a household appliance according to a second embodiment of the present invention;
fig. 3 is a schematic block diagram of a current monitoring device of a household appliance according to a third embodiment of the present invention;
fig. 4 is a schematic block diagram of a current monitoring device of a household appliance according to a fourth embodiment of the present invention;
fig. 5 is a schematic block diagram of a current monitoring device of a household appliance according to a fifth embodiment of the present invention;
fig. 6 is a schematic block diagram of a current monitoring device of a household appliance according to a sixth embodiment of the present invention;
fig. 7 is a schematic block diagram of a current monitoring device of a household appliance according to a seventh embodiment of the present invention;
fig. 8 is a schematic block diagram of a current monitoring device of a household appliance according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a sampling resistor in the current monitoring device of the household appliance according to the present invention;
FIG. 10 is a schematic diagram of a sampling resistor in the current monitoring device of the household appliance according to the present invention;
FIG. 11 is a schematic diagram of a sampling resistor in the current monitoring device of the household appliance according to the present invention;
fig. 12 is a reference flow chart of the present invention for load shutdown and alarm prompt when the current monitoring is abnormal.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Generally, the embodiment of the invention discloses a current monitoring device for household appliances, which comprises a current sampling module and a data processing module, wherein the current sampling module is used for collecting the total load current and/or partial load current of a plurality of household appliances, the data processing module is used for processing the total load current or partial load current collected by the current sampling module to obtain the total load current and/or partial load current, if the load working current is found to be in an abnormal state, a load power supply is cut off, and a user is prompted by an alarm, as shown in fig. 12.
Sampling the total current through a sampling resistor, wherein the zero line and the GND ground are equipotential, the sampling resistor R is arranged at the GND end, and part or all of the current is sampled; the live wire is at the same potential as VCC, the sampling resistor R is at VCC end, and part or all of current is sampled. The present application is not limited to the following combination methods, and the present application is not limited to whether the weak current terminal and the strong current are at equal potential, and the present application is not limited to only using the resistor as the current sampling sensor.
Example one
Weak current VCC and live wire equipotential, resistance R is at VCC end, samples all heavy current load total current.
As shown in fig. 1, the embodiment of the invention discloses a current monitoring device for a household appliance, the monitoring device comprises a power supply module, a live wire L is divided into two paths, a first path is connected with the live wire input end of the power supply module, a second path is connected with the output end of the power supply module, a zero line N is divided into a plurality of paths, the first path is connected with the zero line input end of the power supply module, the other paths are respectively connected with zero line terminals of a plurality of loads and control circuits thereof, one end of a current sampling module is connected with the current output end of the power supply module, the other end of the current sampling module is divided into two paths, the first path is connected with the signal input end of a current data processing module, the second path is connected with the current input end of the first load and the control circuit thereof, the second to nth loads and the control circuits thereof are connected with the first load and the control circuit thereof in parallel, the signal output end, and the power output end of the power supply module is respectively connected with the current data processing module and the power input end of the control chip and is used for providing a working power supply for the current data processing module and the control chip.
Example two
Weak current VCC and live wire equipotential, resistance R is at VCC end, and partial heavy current load total current of sampling.
As shown in FIG. 2, the embodiment of the present invention discloses a current monitoring device for a household electrical appliance, the monitoring device comprises a power module, a live wire L is divided into two paths, a first path is connected with a live wire input end of the power module, a second path is connected with a power output end of the power module, a zero line N is divided into a plurality of paths, the first path is connected with a zero line input end of the power module, the other paths are respectively connected with zero line terminals of a plurality of loads and control circuits thereof, a current output end of the power module is divided into three paths, the first path is connected with a power input end of a first load and a control circuit thereof, the second path is connected with a power input end of a second load and a control circuit thereof, the third path is connected with one end of a current sampling module, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with a signal input end of a current data processing module, and the other paths, the signal output end of the current data processing module is connected with the signal input end of the control chip, and the power output end of the power supply module is respectively connected with the current data processing module and the power input end of the control chip and used for providing a working power supply for the current data processing module and the control chip.
EXAMPLE III
The weak current ground and the zero line are equal in potential, and the sampling resistor R samples all load currents on the weak current ground.
As shown in FIG. 3, the embodiment of the invention discloses a current monitoring device for a household appliance, which comprises a power supply module, wherein a live wire L is divided into a plurality of paths, the first path is connected with the live wire input end of the power supply module, the other paths are respectively connected with the power supply input ends of first to Nth loads and control circuits thereof, the power supply output end of the power supply module is VCC, a zero line N is divided into two paths, the first path is connected with the zero line input end of the power supply module, the second path is connected with the zero line output end of the power supply module, the zero line output end of the power supply module is grounded, one end of a current sampling module is grounded, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with the signal input end of a current data processing module, the other paths are respectively connected with the current output ends of the first to Nth loads and the control circuits thereof, the signal, and the power output end of the power supply module is respectively connected with the current data processing module and the power input end of the control chip and is used for providing a working power supply for the current data processing module and the control chip.
Example four
The weak current ground and the zero line are equal in potential, the sampling resistor R is arranged on the weak current ground, and partial strong current load current is sampled.
As shown in fig. 4, the embodiment of the present invention discloses a current monitoring device for a household electrical appliance, the monitoring device comprises a power module, a live wire L is divided into a plurality of paths, a first path is connected with a live wire input end of the power module, the other paths are respectively connected with power input ends of first to nth loads and control circuits thereof, a power output end of the power module is VCC, a zero line N is divided into two paths, the first path is connected with a zero line input end of the power module, the second path is connected with a zero line output end of the power module, zero line output ends of the power module are grounded, the other ends of the first load and the control circuit thereof, the second load and the control circuit thereof are grounded, one end of a current sampling module is grounded, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with a signal input end of a current data processing module, and the other paths are respectively connected with current output ends, the signal output end of the current data processing module is connected with the signal input end of the control chip, and the power output end of the power supply module is respectively connected with the current data processing module and the power input end of the control chip and used for providing a working power supply for the current data processing module and the control chip.
EXAMPLE five
The sampling resistor R samples all weak current load currents at a weak current load VDD end, the VDD can be equal in potential or not equal in potential to VCC, and a signal ground and a power ground can be equal in potential or not equal in potential.
As shown in fig. 5, an embodiment of the present invention discloses a current monitoring device for a household electrical appliance, the monitoring device includes a current sampling module, one end of the current sampling module is connected to a power supply VDD, the other end of the current sampling module is divided into a plurality of paths, a first path is connected to a signal input terminal of a current data processing module, the other paths are respectively connected to power supply input terminals of first to nth loads and control circuits thereof, the other ends of the first to nth loads and control circuits thereof are grounded, a signal output terminal of the current data processing module is connected to a signal input terminal of a control chip, and a power supply VCC is respectively connected to the current data processing module and the power supply input terminal of the control chip for providing a working power supply thereto.
EXAMPLE six
The sampling resistor R is arranged at a weak current load VDD end, part of weak current load current is sampled, VDD can be equal in potential or not equal in potential to VCC, and a signal ground and a power ground can be equal in potential or not.
As shown in fig. 6, the embodiment of the present invention discloses a current monitoring device for a household electrical appliance, wherein a power supply VDD of the monitoring device is divided into three paths, a first path is connected with a power supply input terminal of a first load and a control circuit thereof, a second path is connected with a power supply input terminal of a second load and a control circuit thereof, a third path is connected with one end of the current sampling module, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with a signal input terminal of a current data processing module, the other paths are respectively connected with power supply input terminals of third to nth loads and control circuits thereof, the other ends of the first to nth loads and control circuits thereof are grounded, a signal output terminal of the current data processing module is connected with a signal input terminal of a control chip, and a power supply VCC is respectively connected with the current data processing module and the power supply, for providing operating power thereto.
EXAMPLE seven
The sampling resistor R samples all weak current load currents at a weak current load power ground end, VDD can be equal in potential or not equal in potential to VCC, and a signal ground can be equal in potential or not equal in potential to a power ground.
As shown in fig. 7, an embodiment of the present invention discloses a current monitoring device for a household electrical appliance, wherein a power supply VDD of the monitoring device is divided into a plurality of paths, a first path is connected to a signal input terminal of a current data processing module, the other paths are respectively connected to power supply input terminals of first to nth loads and control circuits thereof, the other ends of the first to nth loads and control circuits thereof are connected to one end of the current sampling module, the other end of the current sampling module is grounded, a signal output terminal of the current data processing module is connected to a signal input terminal of a control chip, and a power supply VCC is respectively connected to the current data processing module and the power supply input terminal of the control chip for providing a working power supply thereto.
Example eight
The sampling resistor R is arranged at the power ground end of the weak electric load, part of weak electric load current is sampled, VDD can be equal in potential or not equal in potential to VCC, and the signal ground and the power ground can be equal in potential or not.
As shown in fig. 8, the embodiment of the present invention discloses a current monitoring device for a household electrical appliance, wherein a power supply VDD of the monitoring device is divided into a plurality of paths, a first path is connected with a power supply input terminal of a first load and a control circuit thereof, a second path is connected with a power supply input terminal of a second load and a control circuit thereof, the other ends of the first load, the second load and the control circuit thereof are grounded, the other paths of the power supply VDD are respectively connected with power supply input terminals of third load, the nth load and the control circuit thereof, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with a signal input terminal of a current data processing module, the other paths are respectively connected with the other ends of the third load, the nth load and the control circuit thereof, a signal output terminal of the current data processing module is connected with a signal input terminal of a control chip, and a power supply, for providing operating power thereto.
The current sampling module comprises a sampling resistor, an alternating current transformer or a Hall sensor;
the strong electric load carries out current sampling through the sampling resistor, R can be a single resistor or a series resistor or a parallel resistor or an equivalent total resistor of a series-parallel resistor network, and can also be one or a partial resistor sum of the series resistor or the parallel resistor or the series-parallel resistor network.
The weak current load carries out current sampling through the sampling resistor, R can be a single resistor or a series resistor or a parallel resistor or an equivalent total resistor of a series-parallel resistor network, and can also be one or a local resistor sum of the series resistor or the parallel resistor or the series-parallel resistor network.
When the current sampling module uses sampling resistors, as shown in fig. 9, the sampling resistors include resistors R1-R3 connected in series, and it should be noted that the sampling resistor R may be R1, R2, or R3, or an equivalent resistor in series of R1 and R2, or an equivalent resistor in series of R1, R2, or R3, and three resistors are used for illustration only, without limiting how many resistors are connected in series.
As shown in fig. 10, the sampling resistor includes a resistor R1-a resistor R3 connected in parallel, and it should be noted that the sampling resistor R may also be an equivalent resistor formed by connecting resistors R1 and R2 in parallel, and the use of three resistors is merely illustrative, and is not limited to how many parallel resistors are connected.
As shown in fig. 11, the sampling resistor includes a resistor R1-a resistor R6, the resistor R1 is connected to one end of a resistor R5 through a resistor R2, the resistor R3-a resistor R4 are connected in parallel with the resistor R2, and the resistor R6 is connected in parallel with a resistor R5.
Claims (10)
1. A household appliance current monitoring device is characterized in that: the household appliance load current monitoring system comprises a current sampling module and a data processing module, wherein the current sampling module is used for collecting the load total current and/or the partial load current of a plurality of household appliances, the data processing module is used for processing the load total current and/or the partial load current collected by the current sampling module to obtain the load total current and/or the partial load current, and if the load working current is found to be in an abnormal state, a load power supply is cut off, and an alarm is given to prompt a user.
2. A household appliance current monitoring device as claimed in claim 1, characterized in that: the monitoring device comprises a power supply module, a live wire L is divided into two paths, the first path is connected with the live wire input end of the power supply module, the second path is connected with the output end of the power supply module, a zero line N is divided into a plurality of paths, the first path is connected with the zero line input end of the power supply module, other paths are respectively connected with zero line wiring ends of a plurality of loads and control circuits thereof, one end of a current sampling module is connected with the current output end of the power supply module, the other end of the current sampling module is divided into two paths, the first path is connected with the signal input end of a current data processing module, the second path is connected with the current input end of the first load and the control circuit thereof, the second path to the Nth load and the control circuit thereof are connected with the first load and the control circuit thereof in parallel, the signal output end of the current data processing module is connected with the signal input end of a control chip, the And the connection is used for providing working power supply for the connection.
3. A household appliance current monitoring device as claimed in claim 1, characterized in that: the monitoring device comprises a power supply module, a live wire L is divided into two paths, the first path is connected with the live wire input end of the power supply module, the second path is connected with the power supply output end of the power supply module, a zero line N is divided into a plurality of paths, the first path is connected with the zero line input end of the power supply module, the other paths are respectively connected with zero line wiring ends of a plurality of loads and control circuits thereof, the current output end of the power supply module is divided into three paths, the first path is connected with the power supply input end of the first load and the control circuits thereof, the second path is connected with the power supply input end of the second load and the control circuits thereof, the third path is connected with one end of a current sampling module, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with the signal input end of a current data processing module, the other paths are respectively connected with the power supply input ends of the third load, and the power output end of the power supply module is respectively connected with the current data processing module and the power input end of the control chip and is used for providing a working power supply for the current data processing module and the control chip.
4. A household appliance current monitoring device as claimed in claim 1, characterized in that: the monitoring device comprises a power supply module, wherein a live wire L is divided into a plurality of paths, the first path is connected with the live wire input end of the power supply module, the rest of the paths are respectively connected with the power supply input ends of a first load, a second load, a third load and a control circuit of the first load, the power supply output end of the power supply module is VCC, a zero line N is divided into two paths, the first path is connected with the zero line input end of the power supply module, the second path is connected with the zero line output end of the power supply module, the zero line output end of the power supply module is grounded, one end of a current sampling module is grounded, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with the signal input end of the current data processing module, the rest of the paths are respectively connected with the current output ends of the first load, the second load, the third load, the control circuit of the current data processing module For providing it with operating power.
5. A household appliance current monitoring device as claimed in claim 1, characterized in that: the monitoring device comprises a power supply module, wherein a live wire L is divided into a plurality of paths, the first path is connected with the live wire input end of the power supply module, the other paths are respectively connected with the power supply input ends of first to Nth loads and control circuits thereof, the power supply output end of the power supply module is VCC, a zero line N is divided into two paths, the first path is connected with the zero line input end of the power supply module, the second path is connected with the zero line output end of the power supply module, the zero line output end of the power supply module is grounded, the other ends of the first load and the control circuit thereof, the second load and the control circuit thereof are grounded, one end of a current sampling module is grounded, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with the signal input end of a current data processing module, the other paths are respectively connected with the current output ends of third to Nth loads and the control, and the power output end of the power supply module is respectively connected with the current data processing module and the power input end of the control chip and is used for providing a working power supply for the current data processing module and the control chip.
6. A household appliance current monitoring device as claimed in claim 1, characterized in that: monitoring device includes current sampling module, current sampling module's one end is connected with power VDD, and current sampling module's the other end divide into a plurality of ways, and first the way is connected with current data processing module's signal input part, and all the other ways are connected with first to Nth load and control circuit's power input part respectively, and first to Nth load and control circuit's the other end ground connection, current data processing module's signal output part is connected with control chip's signal input part, power VCC respectively with current data processing module and control chip's power input part are connected for it provides working power supply.
7. A household appliance current monitoring device as claimed in claim 1, characterized in that: the monitoring device comprises a monitoring device current sampling module, a power supply VDD is divided into three paths, the first path is connected with a power supply input end of a first load and a control circuit of the first load, the second path is connected with a power supply input end of a second load and a control circuit of the second load, the third path is connected with one end of the current sampling module, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with a signal input end of a current data processing module, the other paths are respectively connected with power supply input ends of a third load, a fourth load, a fifth load, a sixth load and a control circuit of the third load, the fourth load, the fifth load and the control circuit of the third load, the fifth load, the sixth load, the fourth load, the.
8. A household appliance current monitoring device as claimed in claim 1, characterized in that: monitoring device current sampling module, power VDD divide into a plurality of ways, and first the way is connected with current data processing module's signal input part, and all the other ways are connected with first to Nth load and control circuit's power input end respectively, and first to Nth load and control circuit's the other end is connected with current sampling module's one end, current sampling module's other end ground connection, current data processing module's signal output part is connected with control chip's signal input part, power VCC respectively with current data processing module and control chip's power input end are connected for it provides working power supply.
9. A household appliance current monitoring device as claimed in claim 1, characterized in that: the monitoring device comprises a current sampling module, a power supply VDD is divided into a plurality of paths, the first path is connected with the power supply input end of a first load and a control circuit thereof, the second path is connected with the power supply input end of a second load and a control circuit thereof, the other ends of the first to the second loads and the control circuits thereof are grounded, the rest paths of the power supply VDD are respectively connected with the power supply input ends of the third to the Nth loads and the control circuits thereof, the other end of the current sampling module is divided into a plurality of paths, the first path is connected with the signal input end of the current data processing module, all the other paths are respectively connected with the other ends of the third load, the Nth load and the control circuit thereof, the signal output end of the current data processing module is connected with the signal input end of the control chip, and the power VCC is respectively connected with the power input ends of the current data processing module and the control chip and is used for providing a working power supply for the current data processing module and the control chip.
10. A household appliance current monitoring device as claimed in any one of claims 1 to 9, characterized in that: the current sampling module comprises a sampling resistor, an alternating current transformer or a Hall sensor; when the current sampling module uses a sampling resistor, the sampling resistor comprises a resistor R1-a resistor R3 which are connected in series; or the sampling resistor comprises a resistor R1-a resistor R3 which are connected in parallel; or the sampling resistor comprises a resistor R1-a resistor R6, the resistor R1 is connected with one end of the resistor R5 through the resistor R2, the resistor R3-the resistor R4 are connected with the resistor R2 in parallel, and the resistor R6 is connected with the resistor R5 in parallel.
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| CN202010779085.3A CN111781416A (en) | 2020-08-05 | 2020-08-05 | Current monitoring device for household electrical appliance |
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| CN202010779085.3A CN111781416A (en) | 2020-08-05 | 2020-08-05 | Current monitoring device for household electrical appliance |
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