CN113534696A - Toppling detection device for electric appliance and control method - Google Patents
Toppling detection device for electric appliance and control method Download PDFInfo
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- CN113534696A CN113534696A CN202110665734.1A CN202110665734A CN113534696A CN 113534696 A CN113534696 A CN 113534696A CN 202110665734 A CN202110665734 A CN 202110665734A CN 113534696 A CN113534696 A CN 113534696A
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- 238000001514 detection method Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005070 sampling Methods 0.000 claims description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 10
- 230000005611 electricity Effects 0.000 abstract 4
- 230000015654 memory Effects 0.000 description 8
- 238000004590 computer program Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21119—Circuit for signal adaption, voltage level shift, filter noise
Abstract
The invention discloses a dumping detection device and a control method for an electric appliance, which are beneficial to improving the safety of the electric appliance. The utility model discloses a detection device for toppling over, including toppling over detection device and switching circuit, topple over detection device and include microcontroller, topple over detection device still including toppling over detection circuit and switching circuit, wherein, topple over detection circuit with microcontroller's signal input part electricity is connected, it is provided with the gyroscope sensor to topple over detection circuit, switching circuit's first end is connected with the electrical apparatus body electricity, switching circuit's second end is connected with the power connection end electricity of electrical apparatus, switching circuit's third end with microcontroller's signal output part electricity is connected. The control method is the dumping detection device.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a dumping detection device for an appliance and a control method.
Background
Practice shows that in household appliances, particularly electric heaters, when toppling over, fire easily occurs, and the electric heaters often become potential safety hazards in families. At present, the household appliances generally do not have a device for detecting the falling, which is not beneficial to the use safety of the household appliances.
Therefore, the pouring detection device for the electric appliance needs to be developed urgently, so that corresponding measures can be taken in time when the electric appliance is released and poured, and the safety of the electric appliance is improved.
Disclosure of Invention
The invention aims to provide a dumping detection device and a control method for an electric appliance, which are beneficial to improving the safety of the electric appliance.
In order to solve the above technical problem, a first aspect of the present invention discloses a toppling detection device for an electric appliance, the toppling detection device comprising a microcontroller, a toppling detection circuit and a switch circuit, wherein,
the toppling detection circuit is electrically connected with the signal input end of the microcontroller, the toppling detection circuit is provided with a gyroscope sensor,
the first end of the switch circuit is electrically connected with the electric appliance body, the second end of the switch circuit is electrically connected with the power connection end of the electric appliance, and the third end of the switch circuit is electrically connected with the signal output end of the microcontroller.
Therefore, in the first aspect of the present invention, the microcontroller in the toppling detection device can power off the electric appliance body when the electric appliance is tilted, which is beneficial to improving the safety of the electric appliance.
In an alternative embodiment, in the first aspect of the invention, the gyro sensor is provided with four pins, wherein,
a first pin of the gyroscope sensor is electrically connected with a signal input end of the microcontroller through a first resistor, the first pin of the gyroscope sensor is also electrically connected with a first pull-down resistor,
the second pin and the fourth pin of the gyroscope sensor are respectively electrically connected with a direct current power supply end,
and a third pin of the gyroscope sensor is electrically connected with a second pull-down resistor.
In an alternative embodiment, in the first aspect of the present invention, the switching circuit includes an electromagnetic relay and a transistor, wherein,
one end of the electromagnet of the electromagnetic relay is electrically connected with the direct current power supply end, the other end of the electromagnet of the electromagnetic relay is electrically connected with the source electrode of the triode,
one contact end of the electromagnetic relay is electrically connected with one end of the electric appliance body, the other contact end of the electromagnetic relay is electrically connected with the power supply connecting end of the electric appliance,
the grid electrode of the triode is electrically connected with the signal output end of the microcontroller,
and the emitter of the triode is grounded.
In an alternative embodiment, in the first aspect of the present invention, the switch circuit further includes a diode, wherein,
the anode of the diode is electrically connected with the source electrode of the triode, and the cathode of the diode is electrically connected with the direct current power supply end.
In an optional implementation manner, in the first aspect of the present invention, the transistor is an NPN transistor.
A second aspect of the present invention discloses a control method for a toppling detection device for an electric appliance as described in the first aspect of the present invention, the control method comprising:
the microcontroller acquires a first electrical signal input by the toppling detection circuit;
the microcontroller judges whether the first electric signal is a low-level signal;
when the first electric signal is judged to be a low level signal, the microcontroller outputs a second electric signal to the switch circuit, so that the electric appliance body is disconnected with the power supply connecting end.
Therefore, in the second aspect of the present invention, the microcontroller in the toppling detection device can power off the electric appliance body when the electric appliance is tilted, which is beneficial to improving the safety of the electric appliance.
As an optional implementation manner, in the second aspect of the present invention, the acquiring, by the microcontroller, the first electrical signal input by the toppling detection circuit specifically includes:
the microcontroller acquires a first electric signal input by the dumping detection circuit within a first preset time length and at a first preset frequency;
and the microcontroller judges whether the first electric signal is a low level signal, and the method specifically comprises the following steps:
when the microcontroller judges that the first electric signal is a low-level signal for the first time, the microcontroller continuously samples the first electric signal within a second preset time length and obtains a first sampling signal;
the microcontroller judges whether the first sampling signal is a low-level signal;
and when the first sampling signal is judged to be a low-level signal, the microcontroller determines that the first electric signal is a low-level signal.
In a third aspect, the present invention discloses a computer-readable storage medium, which stores computer instructions for executing the control method disclosed in the second aspect of the present invention when the computer instructions are called.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a pouring detection device for an electric appliance according to an embodiment of the present invention;
FIG. 2 is a circuit schematic of a rollover detection circuit of an embodiment of the present invention;
FIG. 3 is a circuit schematic of a switching circuit of an embodiment of the present invention;
fig. 4 is a flowchart illustrating a control method according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be 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.
The terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a pouring detection device for an electrical appliance according to an embodiment of the first aspect of the present disclosure. As shown in fig. 1, the toppling detection device includes a microcontroller, a toppling detection circuit and a switch circuit, wherein,
the toppling detection circuit is electrically connected with the signal input end of the microcontroller, the toppling detection circuit is provided with a gyroscope sensor,
the first end of the switch circuit is electrically connected with the electric appliance body, the second end of the switch circuit is electrically connected with the power connection end of the electric appliance, and the third end of the switch circuit is electrically connected with the signal output end of the microcontroller.
In the embodiment of the invention, the microcontroller can be a PIC16 series single-chip microcomputer or an STM32 series single-chip microcomputer.
In the embodiment of the invention, the toppling detection circuit is provided with the gyroscope sensor, the gyroscope sensor is used for transmitting an electric signal for indicating that the electric appliance topples to the signal input end of the microcontroller through the toppling detection circuit when the internal detection mechanism is deviated due to the change of the stress of the gyroscope sensor at the moment that the electric appliance topples. When the signal input end of the microcontroller acquires an electric signal for indicating that the electric appliance topples, the signal output end of the microcontroller can output an electric signal for driving the electric appliance body to be disconnected with the power connection end of the electric appliance to the switch circuit, so that the electric appliance body is powered off.
In the embodiment of the first aspect of the present invention, the microcontroller in the toppling detection device can power off the electric appliance body when the electric appliance is tilted, which is beneficial to improving the safety of the electric appliance.
In the embodiment of the present invention, optionally, as shown in fig. 2, the gyro sensor D19 is provided with four pins, wherein,
the first pin of the gyro sensor D19 is electrically connected to the signal input QD of the microcontroller via a first resistor R1, the first pin of the gyro sensor D19 is also electrically connected to a first pull-down resistor R2,
the second pin and the fourth pin of the gyroscope sensor D19 are respectively and electrically connected with a DC power supply terminal-5V,
the third pin of the gyro sensor D19 is electrically connected to the second pull-down resistor R3.
The first resistor R1 plays a role in limiting current, which is beneficial to reducing the risk that elements on a branch circuit formed between the gyro sensor D19 and a signal input end QD of the microcontroller are damaged due to overlarge current; the first pull-down resistor R2 enables the signal input end QD of the microcontroller to be normally set to be at a low level, which is beneficial to reducing signal interference at the place; the second pull-down resistor R3 enables the third pin of the gyro sensor D19 to be normally set to a low level, which is beneficial to reducing signal interference therein.
In an embodiment of the present invention, optionally, as shown in fig. 3, the switch circuit includes an electromagnetic relay L1 and a transistor Q1, wherein,
one end of an electromagnet of the electromagnetic relay L1 is electrically connected with a DC power supply end +12V, the other end of the electromagnet of the electromagnetic relay L1 is electrically connected with a source electrode of a triode Q1,
one contact terminal N1 of the electromagnetic relay L1 is electrically connected with one end of the electric appliance body, the other contact terminal N2 of the electromagnetic relay L1 is electrically connected with the power connection end of the electric appliance,
the gate of transistor Q1 is electrically connected to the signal output AD1 of the microcontroller,
the emitter of transistor Q1 is connected to ground.
The electromagnetic relay L1 can be used as an actuating device in a switch circuit, when the two contacts are closed, the power connection end of the electric appliance body and the electric appliance is connected, and when the two contacts are disconnected, the power connection end of the electric appliance body and the electric appliance is disconnected. Specifically, the signal output end of the microcontroller outputs an electric signal for controlling the on-off of the triode Q1 to control whether the contact of the electromagnetic relay L1 is closed, and when the microcontroller turns on the triode Q1, the contact of the electromagnetic relay L1 is closed; the contacts of the electromagnetic relay L1 open when the microcontroller causes transistor Q1 to turn off.
Further optionally, as shown in fig. 3, the switch circuit further includes a diode D1, and further optionally, the transistor Q1 is an NPN-type transistor, wherein an anode of the diode D1 is electrically connected to a source of the transistor Q1, and a cathode of the diode D1 is electrically connected to the dc power source terminal + 12V.
Through setting up the diode, be favorable to reducing the triode and receive the current impact of direct current power end and the risk of damaging.
Please refer to fig. 4. The control method described in fig. 4 is suitable for use in the pouring detection device for an electric appliance described in the embodiment of the first aspect of the present invention. As shown in fig. 4, the control method may include the operations of:
101. the microcontroller acquires a first electrical signal input by the dump detection circuit.
102. The microcontroller determines whether the first electrical signal is a low level signal, and executes step 103 when the first electrical signal is determined to be a low level signal.
103. The microcontroller outputs a second electrical signal to the switch circuit, so that the electric appliance body is disconnected from the power connection end.
In the embodiment of the present invention, the second electrical signal is one of a high level signal and a low level signal according to a circuit connection structure of the switch circuit. For example, according to the circuit connection structure of the switch circuit shown in fig. 3, the microcontroller inputs a low level signal to the switch circuit to disconnect the power connection terminal from the electric appliance body, and the second electrical signal is a low level signal.
In this embodiment of the present invention, optionally, in step 102, when it is determined that the first electrical signal is at a high level, the microcontroller outputs a third electrical signal to the switch circuit, so that the electrical appliance body is connected to the power connection terminal. It is understood that the second electrical signal is one of a high level signal or a low level signal according to the circuit connection structure of the switching circuit. For example, according to the circuit connection structure of the switch circuit shown in fig. 3, the microcontroller inputs a high level signal to the switch circuit to connect the electrical appliance body and the power connection terminal, and the second electrical signal is a high level signal.
In the second aspect of the embodiment of the present invention, the microcontroller in the toppling detection device can power off the electric appliance body when the electric appliance is tilted, which is beneficial to improving the safety of the electric appliance.
In this embodiment of the present invention, optionally, step 101 may include the following operations:
the microcontroller acquires a first electric signal input by the dumping detection circuit within a first preset time length and at a first preset frequency;
microcontroller judges whether first electrical signal is the low level signal, specifically includes:
when the microcontroller judges that the first electric signal is a low-level signal for the first time, the microcontroller continuously samples the first electric signal within a second preset time length and obtains a first sampling signal;
the microcontroller judges whether the first sampling signal is a low-level signal;
and when the first sampling signal is judged to be a low-level signal, the microcontroller determines that the first electric signal is a low-level signal.
The first preset time may be 2min or 10min, and may be determined according to an application scenario. The first predetermined frequency is determined by combining the characteristics of the microcontroller itself and the detection time precision designed for the toppling detection device, and specifically, may be 0.2Hz (i.e., 5s as a time period); the second preset time period may be 30 seconds or 3 seconds, and may be specific according to an application scenario.
Therefore, the microcontroller acquires the first electric signal input by the dumping detection circuit within the first preset time length and at the first preset frequency, so that the first electric signal can be efficiently sampled, and the situation that the microcontroller processes data to generate overlarge operation amount due to the fact that the sampled data is too much can be avoided; when the microcontroller judges that the first electric signal is the low level signal for the first time, the microcontroller continuously samples the first electric signal within a second preset time period and obtains the first sampling signal, and then judges whether the first sampling signal is the low level signal or not, so that the microcontroller judges under the condition that the first electric signal is relatively stable, and the accuracy of the result of judging the first electric signal by the microcontroller is improved.
In an embodiment of the third aspect of the present invention, a computer-readable storage medium is disclosed, which stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute the steps of the control method described in the embodiment of the second aspect of the present invention.
A fourth aspect embodiment of the invention discloses a computer program product comprising a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform the steps of the control method described in the second aspect embodiment of the invention.
The above-described embodiments of the apparatus are merely illustrative, and the modules described as separate parts may or may not be physically separate, and the parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above detailed description of the embodiments, those skilled in the art will clearly understand that the embodiments may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. Based on such understanding, the above technical solutions may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, where the storage medium includes a Read-Only Memory (ROM), a Random Access Memory (RAM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), a One-time Programmable Read-Only Memory (OTPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc-Read-Only Memory (CD-ROM), or other disk memories, CD-ROMs, or other magnetic disks, A tape memory, or any other medium readable by a computer that can be used to carry or store data.
Finally, it should be noted that: the toppling detection device and the control method for an electrical appliance disclosed in the embodiments of the present invention are only disclosed as preferred embodiments of the present invention, and are only used for illustrating the technical solutions of the present invention, not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (8)
1. A pouring detection device for an electrical appliance, characterized in that the pouring detection device comprises a microcontroller, a pouring detection circuit and a switch circuit, wherein,
the toppling detection circuit is electrically connected with the signal input end of the microcontroller, the toppling detection circuit is provided with a gyroscope sensor,
the first end of the switch circuit is electrically connected with the electric appliance body, the second end of the switch circuit is electrically connected with the power connection end of the electric appliance, and the third end of the switch circuit is electrically connected with the signal output end of the microcontroller.
2. The toppling detection device for an electric appliance according to claim 1, wherein the gyro sensor is provided with four pins, wherein,
a first pin of the gyroscope sensor is electrically connected with a signal input end of the microcontroller through a first resistor, the first pin of the gyroscope sensor is also electrically connected with a first pull-down resistor,
the second pin and the fourth pin of the gyroscope sensor are respectively electrically connected with a direct current power supply end,
and a third pin of the gyroscope sensor is electrically connected with a second pull-down resistor.
3. The toppling detection device for an electric appliance according to claim 1, wherein the switching circuit comprises an electromagnetic relay and a triode, wherein,
one end of the electromagnet of the electromagnetic relay is electrically connected with the direct current power supply end, the other end of the electromagnet of the electromagnetic relay is electrically connected with the source electrode of the triode,
one contact end of the electromagnetic relay is electrically connected with one end of the electric appliance body, the other contact end of the electromagnetic relay is electrically connected with the power supply connecting end of the electric appliance,
the grid electrode of the triode is electrically connected with the signal output end of the microcontroller,
and the emitter of the triode is grounded.
4. The pour detection device for an appliance of claim 3, wherein the switching circuit further comprises a diode, wherein,
the anode of the diode is electrically connected with the source electrode of the triode, and the cathode of the diode is electrically connected with the direct current power supply end.
5. The toppling detection device for an electric appliance according to claim 3, wherein the triode is an NPN type triode.
6. A control method for a pouring detection device for an electric appliance according to any of claims 1 to 5, characterized in that it comprises:
the microcontroller acquires a first electrical signal input by the toppling detection circuit;
the microcontroller judges whether the first electric signal is a low-level signal;
when the first electric signal is judged to be a low level signal, the microcontroller outputs a second electric signal to the switch circuit, so that the electric appliance body is disconnected with the power supply connecting end.
7. The control method according to claim 6, wherein the microcontroller acquires the first electrical signal input by the dump detection circuit, and specifically comprises:
the microcontroller acquires a first electric signal input by the dumping detection circuit within a first preset time length and at a first preset frequency;
and the microcontroller judges whether the first electric signal is a low level signal, and the method specifically comprises the following steps:
when the microcontroller judges that the first electric signal is a low-level signal for the first time, the microcontroller continuously samples the first electric signal within a second preset time length and obtains a first sampling signal;
the microcontroller judges whether the first sampling signal is a low-level signal;
and when the first sampling signal is judged to be a low-level signal, the microcontroller determines that the first electric signal is a low-level signal.
8. A computer readable storage medium storing computer instructions which, when invoked, perform the steps of the control method according to any one of claims 6 to 7.
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| CN202110665734.1A CN113534696A (en) | 2021-06-16 | 2021-06-16 | Toppling detection device for electric appliance and control method |
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| CN202110665734.1A CN113534696A (en) | 2021-06-16 | 2021-06-16 | Toppling detection device for electric appliance and control method |
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| EP2539912A1 (en) * | 2010-02-24 | 2013-01-02 | BSH Bosch und Siemens Hausgeräte GmbH | Circuit assembly for operating a household appliance and corresponding method |
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Application publication date: 20211022 |