CN211123070U - Electric equipment's trouble reminding device and electric equipment - Google Patents
Electric equipment's trouble reminding device and electric equipment Download PDFInfo
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- CN211123070U CN211123070U CN201921378500.3U CN201921378500U CN211123070U CN 211123070 U CN211123070 U CN 211123070U CN 201921378500 U CN201921378500 U CN 201921378500U CN 211123070 U CN211123070 U CN 211123070U
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Abstract
The utility model relates to a fault reminding device and consumer of consumer, the device include current detection device, voltage detection device and fault detection device, and current detection device and voltage detection device connect the switching power supply unit of consumer, and fault detection device connects current detection device and voltage detection device. The method comprises the steps that a current detection device and a voltage detection device acquire power supply parameters of a switching power supply device, and a fault detection device receives the power supply parameters acquired by the switching power supply device of the electric equipment when detecting a fault detection starting condition; when the power supply parameters meet preset power supply fault conditions, power supply fault reminding information is output; and when the power supply parameters do not accord with the preset power supply fault conditions, outputting software fault prompt information. When the electric equipment breaks down, whether the electric equipment belongs to the power failure or the software failure is judged according to the collected power parameters, so that a user can know the failure type to carry out failure positioning, and the convenience of failure detection of the electric equipment is improved.
Description
Technical Field
The present disclosure relates to electrical equipment fault detection, and more particularly to a fault notification device for electrical equipment and electrical equipment.
Background
With the development of science and technology and the continuous progress of society, the living standard of people is continuously improved, and various electric equipment appears in the daily life and work of people, so that the living quality of people is gradually improved. Taking the purifier as an example, the purifier can purify dust, dust mites, formaldehyde, viruses, allergens, various peculiar smells, hairs and the like, thereby improving the indoor air quality and protecting the health of a user.
When the purifier breaks down, the traditional fault reminding mode needs a user to solve the problem of the purifier by searching a specification, and the fault problem is troublesome to locate. The traditional fault reminding mode has the defect of low convenience in fault detection.
SUMMERY OF THE UTILITY MODEL
Accordingly, it is necessary to provide a fault notification device for an electric device and an electric device, which can improve convenience of fault detection, in order to solve the problem of low convenience of detection in the conventional fault notification method.
A fault reminding device of electric equipment comprises a current detection device, a voltage detection device and a fault detection device, wherein the current detection device and the voltage detection device are connected with a switching power supply device of the electric equipment; when the power supply parameters meet preset power supply fault conditions, power supply fault reminding information is output; the power failure reminding information is used for reminding a user of performing power failure processing on the electric equipment; when the power supply parameters do not accord with preset power supply fault conditions, software fault prompt information is output; and the software fault prompt information is used for guiding a user to carry out software fault processing on the electric equipment.
In one embodiment, the current detection device comprises a current transformer, a current detection resistor, a rectification circuit and a voltage stabilizing diode, a primary winding of the current transformer is connected to the input side of the switching power supply device in series, one end of a secondary winding of the current transformer is connected to one end of the current detection resistor and is connected to the fault detection device through the rectification circuit, and the other end of the secondary winding of the current transformer is grounded; the other end of the current detection resistor is grounded, the cathode of the voltage stabilizing diode is connected with the common end of the rectifying circuit and the fault detection device, and the anode of the voltage stabilizing diode is grounded.
In one embodiment, the rectifying circuit comprises a schottky diode and a capacitor, wherein the anode of the schottky diode is connected with the secondary winding of the current transformer, the cathode of the schottky diode is connected with the fault detection device, one end of the capacitor is connected with the cathode of the schottky diode, and the other end of the capacitor is grounded.
In one embodiment, the voltage detection device includes a motor power supply voltage division detection circuit and a master power supply voltage division detection circuit, the motor power supply voltage division detection circuit is connected with a motor power supply end of the switching power supply device and the fault detection device, and the master power supply voltage division detection circuit is connected with a master power supply end of the switching power supply device and the fault detection device.
In one embodiment, the main control power supply voltage division detection circuit includes a first resistor and a second resistor, the first resistor and the second resistor are connected in series, a common end of the first resistor and the second resistor is connected to the fault detection device, the other end of the first resistor is connected to a main control power supply end of the switching power supply device, and the other end of the second resistor is grounded.
In one embodiment, the fault detection device includes a controller, a wireless communication device, and an energy storage element, and the controller is connected to the current detection device, the voltage detection device, the wireless communication device, and the energy storage element.
In one embodiment, the controller is an MCU.
The utility model provides an electric equipment, includes power input device, switching power supply unit, motor, master control set and above-mentioned trouble reminding device, switching power supply unit's input side is connected power input device with current detection device, switching power supply unit's output side is connected the motor master control set with voltage detection device.
In one embodiment, the power input device includes a rectifier bridge that connects the input side of the switching power supply device.
In one embodiment, the switching power supply device comprises a switching tube and a transformer, the transformer comprises a first primary winding, a second primary winding and a secondary winding,
one end of the first primary winding is connected with the rectifier bridge, the other end of the first primary winding is connected with the input end of the switch tube, the output end of the switch tube is connected with the current detection device, and the control end of the switch tube is used for receiving PWM signals; the second primary winding is connected with the main control device, and the secondary winding is connected with the motor.
In one embodiment, the powered device is an air conditioner, a refrigerator, or an air purifier.
According to the fault reminding device of the electric equipment and the electric equipment, when the fault detection starting condition is detected, the fault detection device receives the power supply parameters acquired by the switch power supply device of the electric equipment. When the power supply parameters meet preset power supply fault conditions, outputting power supply fault reminding information to remind a user of performing power supply fault processing on the electric equipment; and when the power supply parameters do not accord with the preset power supply fault conditions, outputting software fault prompt information to guide a user to carry out software fault processing on the electric equipment. When the electric equipment breaks down, whether the electric equipment belongs to the power failure or the software failure is judged according to the collected power parameters, and corresponding prompt information is output to the user, so that the user can know the failure type to carry out failure positioning.
Drawings
FIG. 1 is a block diagram of a fault notification apparatus of a power consuming device according to an embodiment;
FIG. 2 is a schematic diagram of a power input device, a switching power supply device and a current detection device in one embodiment;
fig. 3 is a schematic diagram of a main power supply voltage division detection circuit in an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, a fault reminding device for electric equipment is provided, wherein the electric equipment can be air conditioners, refrigerators, air purifiers and other equipment. As shown in fig. 1, the fault warning device includes a current detection device 110, a voltage detection device 120, and a fault detection device 130, the current detection device 110 and the voltage detection device 120 are connected to a switching power supply device 220 of the electric equipment, and the fault detection device 130 is connected to the current detection device 110 and the voltage detection device 120. The current detection device 110 and the voltage detection device 120 collect power supply parameters of the switching power supply device and send the power supply parameters to the fault detection device 130, and the fault detection device 130 receives the power supply parameters collected by the switching power supply device of the electric equipment when detecting a fault detection starting condition; when the power supply parameters meet preset power supply fault conditions, power supply fault reminding information is output; the power failure reminding information is used for reminding a user of performing power failure processing on the electric equipment; when the power supply parameters do not accord with the preset power supply fault conditions, software fault prompt information is output; and the software fault prompt information is used for guiding a user to carry out software fault processing on the electric equipment.
The electric equipment includes a power input device 210, a switching power supply device 220, a motor 230, and a main control device 240. The switching power supply device 220 has an input side connected to the power input device 210 and an output side connected to the motor 230 and the main control device 240. The switching power supply device 220 is used for supplying power to devices such as a main control device 240 of the electric equipment, the motor 230 and the like. The type of power supply parameter is not exclusive and may include current data, voltage data, and the like. The fault detection device 130 receives the power supply parameters acquired by the current detection device 110 and the voltage detection device 120 for the switching power supply device 220 of the electrical equipment, and performs subsequent fault judgment operations. The fault detection starting condition is not unique, and may be that a fault detection instruction is received or that a fault occurs in the electric equipment is detected. Further, after receiving a fault detection instruction sent by a user, the fault detection device 130 controls the current detection device 110 and the voltage detection device 120 to collect power supply parameters of the switching power supply device 220 for fault judgment. In addition, the fault detection device 130 may also control the current detection device 110 and the voltage detection device 120 to perform parameter collection in real time, if a fault detection instruction sent by a user is not received, the fault detection device 130 only locally stores the collected parameters, and after the fault detection instruction sent by the user is received, fault judgment is performed according to the collected parameters.
According to the different collected power supply parameters, the preset power supply fault conditions are correspondingly different. If the power supply parameter meets the preset power supply failure condition, the failure detection device 130 may determine that the power supply failure occurs in the electrical equipment, and output power supply failure reminding information to remind the user of performing power supply failure processing. Specifically, the power failure may be a failure in external power access, or may be caused by a problem in internal devices or loose wires between devices. When the external power source is connected normally, the fault detection device 130 may use the external power source to supply power and charge the energy storage element. In addition, the manner of outputting the power failure reminding information by the failure detection apparatus 130 is not exclusive, and the power failure reminding information can be displayed on the display screen of the electric device or transmitted to the mobile terminal in a wireless communication manner according to the specific situation of the power failure.
In one embodiment, the fault detection device 130 includes a controller, a wireless communication device, and an energy storage element, the controller being connected to the current detection device 110, the voltage detection device 120, the wireless communication device, and the energy storage element. Wherein, the controller can adopt MCU (Micro Control Unit), and wireless communication device can be WIFI module, bluetooth module or infrared module etc. for communicate with mobile terminal, and energy storage component can be lithium cell or energy storage electric capacity etc.. The mobile terminal may be a mobile phone, a palm computer, or a wearable device, for example, the mobile phone is used, the MCU processes the acquired power parameters, and after the power failure condition is detected, the power failure reminding information is sent to an APP (Application) of the mobile phone through the wireless communication device to remind the user of power failure detection. When the external power supply access fails, the MCU and the wireless communication device are powered by the energy storage element. It can be understood that in other embodiments, when power failure occurs, the display screen of the electric equipment can be powered by the energy storage element, and the MCU is connected with the display screen and sends the power failure reminding information to the display screen for displaying.
If the power supply parameter does not meet the preset power supply fault condition, the fault detection device 130 may determine that the power supply fault does not occur to the electric equipment, and output a software fault prompt message to guide the user to perform software fault processing. Similarly, the fault detection device 130 may display the software fault notification message through a display screen of the electric device, or transmit the software fault notification message to the mobile terminal in a wireless communication manner.
In the embodiment, when the power supply parameter does not meet the preset power supply fault condition, the software fault code and the corresponding problem solution are used as the software fault prompt information and sent to the mobile terminal for displaying, and the user can perform fault processing according to the interface prompt of the mobile terminal. The fault detection device 130 may directly send the software fault code and the corresponding problem solution to the mobile terminal for display through a wireless communication manner. In addition, the fault detection device 130 may further be connected to a main control device 240 of the electrical equipment, and the fault detection device 130 outputs a software fault instruction to the main control device, so that the main control device 240 sends the software fault code and the corresponding problem solution to the mobile terminal for display.
The fault reminding device of the electric equipment judges whether the electric equipment belongs to a power failure or a software failure according to the collected power parameters when the electric equipment fails, and outputs corresponding prompt information to a user, so that the user knows the fault type to perform fault location, and the fault detection convenience of the electric equipment is improved.
In one embodiment, the power supply parameters include an input side current and an output side voltage of the switching power supply device 220. The current detection device 110 may employ a current transformer to collect input-side current of the switching power supply device 220, and the voltage detection device 120 may employ a voltage division sampling circuit to collect output-side voltage of the switching power supply device 220. Meanwhile, the input side current and the output side voltage of the switching power supply device 220 are collected, and the fault type of the electric equipment is analyzed, so that the detection is simple, convenient and quick, and the reliability is high.
Further, in an embodiment, the fault detection device 130 turns to zero after detecting that there is a transient current on the input side of the switching power supply device 220, and the value is still zero after the power is turned on again, and then outputs a warning message of the damage of the switching power supply device to the mobile terminal; if it is detected that there is no current on the input side of the switching power supply device 220, switching failure indication information is output.
Specifically, the fault detection device 130 processes the data detected by the current transformer, and if the transformer has an instantaneous larger value and then becomes zero, and the value is still zero after being powered on again, it is determined that the switching power supply device 220 is damaged, and in order to avoid further damage, the fault detection device 130 sends fault information to the user mobile phone APP to remind the user of powering off and dialing an after-sale call. If the mutual inductor does not detect the instantaneous value and suddenly becomes zero, the fault detection device 130 outputs prompt information to a display screen of the electric equipment or a mobile terminal of a user to remind the user to detect the touch switch of the electric equipment, and the problem of power supply fault caused by poor contact of the touch switch is solved.
And corresponding prompt information is output according to the specific type of the power failure, so that a user can conveniently position the power failure, and the convenience and the reliability of the failure detection of the equipment are improved.
In addition, in an embodiment, the fault detection device 130 further outputs a line detection prompt message when the output-side voltage of the switching power supply device 220 is zero when the input-side current of the switching power supply device 220 is within a preset range. The specific value of the preset range is not unique, and if the input-side current of the switching power supply device 220 is within the preset range, it may be determined that the input-side current of the switching power supply device 220 is normal, and the fault detection device 130 analyzes the output-side voltage of the switching power supply device 220. If the output side voltage of the switching power supply device 220 is zero, a line detection prompt message is output to a display screen of the electric equipment or a mobile terminal of a user, and the user is reminded to check whether lines among the devices are loosened.
Specifically, in one embodiment, the output side voltage of the switching power supply device 220 includes a motor supply terminal voltage and a main control supply terminal voltage. The output side of the switching power supply device 220 includes a motor power terminal and a main control power terminal, which are respectively connected to the motor 230 and the main control device 240 of the electric device, so as to supply power to the motor 230 and the main control device 240, and the voltage detection device 120 can respectively detect the voltages of the motor power terminal and the main control power terminal of the switching power supply device through two voltage division detection circuits. The fault detection device 130 outputs a corresponding prompt message according to the voltage detection result to remind the user that the power failure occurs at the power end of the motor and/or the power end of the main control power source, and the user pays attention to the inspection. For example, if the current value detected by the current transformer is within the normal range, the fault detection device 130 detects the voltage values of the motor power supply and the main control power supply through the two voltage division detection circuits, and if the voltage value is zero, a prompt message is output to prompt a user to check whether the line of each block is loosened.
When the input power supply of the electric equipment has no problem, the fault detection device also carries out fault detection on the motor power supply and the main control power supply of the electric equipment, outputs corresponding prompt information to remind a user of detecting, and can further improve the convenience and accuracy of fault detection of the electric equipment.
In one embodiment, the fault detection initiation condition includes: and receiving a fault detection starting instruction. The manner of receiving the fault detection start instruction sent by the user is not unique, and specifically, when the electrical equipment has a fault, the user may use the fault detection function of the mobile phone APP to communicate with the wireless communication device of the fault detection device 130, and send the fault detection start instruction to the controller of the fault detection device 130. And the controller starts the self-checking function after receiving the fault detection starting instruction. The received fault detection starting instruction is used as a starting condition of fault self-detection, and energy waste caused by fault detection when the electric equipment does not have faults is avoided.
Further, in one embodiment, if the fault detection start condition is not detected, the fault detection device 130 further receives and stores the input-side current collected by the switching power supply device 220.
If the fault detection starting condition is not detected, it may be considered that the electric device has no fault, and the fault detection device 130 stores the input-side current of the switching power supply device 220 collected by the current detection device 110, and monitors and records the input current of the switching power supply device 220, so as to perform data calling and analysis in the following.
The structures of the current detection device 110 and the voltage detection device 120 are not exclusive, and in one embodiment, as shown in fig. 2, the current detection device 110 includes a current transformer L1, a current detection resistor R1, a rectification circuit 112, and a zener diode D2, a primary winding of the current transformer L1 is connected in series to an input side of the switching power supply device 220, one end of a secondary winding of the current transformer L1 is connected to one end of a current detection resistor R1, and is connected to the fault detection device 130 through the rectification circuit 112, specifically, an Analog to Digital Converter (ADC) port of a controller in the fault detection device 130 is connected, the other end of the secondary winding of the current transformer L1 is grounded, the other end of the current detection resistor R1 is grounded, a cathode rectification circuit 112 of the zener diode D2 is connected to a common end of the fault detection device 130, and an anode of the zener diode D2 is grounded.
Further, the rectifying circuit 112 includes a schottky diode D3 and a capacitor C2, an anode of the schottky diode D3 is connected to the secondary winding of the current transformer L1, a cathode of the schottky diode D3 is connected to the fault detection device 130, and is specifically connected to an ADC port of the controller in the fault detection device 130, one end of the capacitor C2 is connected to a cathode of the schottky diode D3, and the other end of the capacitor C2 is grounded.
Because the adopted power supply topology is flyback, the primary side of the current transformer L1 is sampled to be sawtooth waves, the secondary side still coupled to the current transformer L is sawtooth waves, the secondary side inductive current of the current transformer L1 flows through the current detection resistor R1, a certain voltage is generated on the current detection resistor R1, the capacitor C2 and the Schottky diode D3 form the rectifying circuit 112, effective direct current voltage is obtained and output to the ADC port of the controller of the fault detection device 130, the controller performs analog-to-digital conversion on a direct current voltage signal connected to the ADC port to read a voltage value, and then the current value of the input side of the switching power supply device 220 is obtained by combining preset circuit parameters.
In one embodiment, the voltage detection device 120 includes a motor power division detection circuit connected to the motor power terminal of the switching power device 220 and the fault detection device 130, and a main power division detection circuit connected to the main power terminal of the switching power device 220 and the fault detection device 130.
Specifically, taking the master power supply voltage division detection circuit as an example, as shown in fig. 3, the master power supply voltage division detection circuit includes a first resistor R18 and a second resistor R19, the first resistor R18 and the second resistor R19 are connected in series, and a common terminal is connected to the fault detection device 130, specifically to an ADC port of a controller in the fault detection device 130. The other end of the first resistor R18 is connected to the main power supply terminal of the switching power supply device 220, and the other end of the second resistor R19 is grounded. In this embodiment, when the switching power supply device 220 works normally, the +24V current output by the main control power supply terminal is divided and sampled by the first resistor R18 and the second resistor R19, and a voltage signal obtained by sampling is transmitted to an ADC port of the controller, and the controller performs analog-to-digital conversion and analysis.
In order to better understand the above fault notification apparatus for electrical equipment, the following description will be made in detail by taking the electrical equipment as an air purifier.
When the purifier breaks down, the traditional fault reminding mode needs a user to solve the problem of the purifier by searching a specification, and the fault problem is troublesome to locate. Although the software fault code is displayed on the display screen of the purifier, when the power supply of the whole purifier fails, the software fault code does not work. Based on this, the fault reminding device of consumer that this application provided, through intelligent location trouble, solve the trouble to the user and provide the guide effect when the clarifier breaks down.
Specifically, in the normal operation state of the purifier, the fault detection device 130 detects only the current data detected at the current transformer of the current detection device 110 and stores the current data in the local memory. When a fault occurs, after the user uses the fault detection function of the mobile phone APP, the fault detection device 130 of the purifier starts the self-checking function.
The fault detection device 130 processes the data detected by the current transformer, and the specific analysis is as follows:
i. if the mutual inductor has an instantaneous larger value and then becomes zero, and the value is still zero after the mutual inductor is electrified again, the damage of the switching power supply module is determined, and in order to avoid further damage, the fault detection device 130 sends fault information to the mobile phone APP of the user to remind the user of powering off and making an after-sale call; if the mutual inductor does not detect the instantaneous value and suddenly becomes zero, the user is reminded to detect the touch switch of the machine, and the problem caused by poor contact of the touch switch is solved.
ii. If the current value detected by the mutual inductor is within the normal range, the fault detection device reminds a user to check whether lines of respective plate blocks are loosened or not by detecting voltage values of a motor power supply and a main control power supply (voltage division is performed by adopting a resistor, and a level value is read by an ADC (analog-to-digital converter) interface of the fault detection device, namely, an analog level after voltage division is acquired).
And iii, when the power supply is normal, the main control device sends the software fault code and the corresponding problem solution to the APP interface of the mobile phone of the user, and the user carries out fault processing according to the prompt of the APP interface of the mobile phone.
According to the fault reminding device of the electric equipment, through intelligent fault positioning, when the equipment breaks down, a guiding effect is provided for a user to solve the fault, the user is guided to solve the problem, time and energy consumption caused by finding a specification and finding a specification solution is avoided, secondary accidents caused by self-solution of the user are also avoided, and good experience is brought to the user.
In one embodiment, the electric equipment is also provided, and particularly can be an air conditioner, a refrigerator, an air purifier and the like. In this embodiment, the electric equipment is an air purifier. As shown in fig. 1, the electric device includes a power input device 210, a switching power supply device 220, a motor 230, a main control device 240 and the above-mentioned fault notification device, wherein an input side of the switching power supply device 220 is connected to the power input device 210 and the current detection device 110, and an output side of the switching power supply device 220 is connected to the motor 230, the main control device 240 and the voltage detection device 120.
Specifically, as shown in fig. 2, the power input device 210 includes a rectifier bridge D1, the rectifier bridge D1 is connected to the input side of the switching power supply device 220. in this embodiment, the rectifier bridge D1 is a full-bridge rectifier bridge composed of four diodes, two input terminals 2 and 3 of the rectifier bridge D1 are respectively connected to the power supply terminals AC L and CAN, the output terminal 1 of the rectifier bridge D1 is connected to the switching power supply device 220, the output terminal 2 of the rectifier bridge D1 is grounded, and the rectifier bridge D1 is used for rectifying the AC power received from the AC input power supply terminals AC L and CAN to obtain dc power to be transmitted to the switching power supply device 220.
Further, the switching power supply device 220 includes a switching tube U1 and a transformer L2, the transformer L2 includes a first primary winding (end 1-end 3), a second primary winding (end 5-end 6) and a secondary winding (end 10-end 12), one end of the first primary winding is connected to the rectifier bridge D1, the other end of the first primary winding is connected to the input end of the switching tube U1, the output end of the switching tube U1 is connected to the current detection device 110, the control end of the switching tube U1 is configured to receive a PWM (Pulse Width Modulation) signal, the second primary winding is connected to the main control device 240, and the secondary winding is connected to the motor 230.
Specifically, an end point 1 of the first primary winding is connected to an output end 1 of a rectifier bridge D1, an end point 3 of the first primary winding is connected to an input end of a switch tube U1, an output end of a switch tube U1 is connected to a current transformer L in the current detection device 110, and a switch tube U1 is switched on and off according to a PWM signal received by a control end, so that a direct current output by the rectifier bridge D1 is converted into a stable alternating current.
Above-mentioned consumer when the consumer breaks down, judges according to the power parameter who gathers and belongs to power failure or software fault to output corresponding prompt message and give the user, so that the user knows the fault type and carries out fault location, has improved consumer's fault detection convenience.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A fault reminding device of electric equipment is characterized by comprising a current detection device, a voltage detection device and a fault detection device, wherein the current detection device and the voltage detection device are connected with a switching power supply device of the electric equipment; when the power supply parameters meet preset power supply fault conditions, power supply fault reminding information is output; the power failure reminding information is used for reminding a user of performing power failure processing on the electric equipment; when the power supply parameters do not accord with preset power supply fault conditions, software fault prompt information is output; the software fault prompt information is used for guiding a user to carry out software fault processing on the electric equipment;
the fault detection device comprises a controller, a wireless communication device and an energy storage element, wherein the controller is connected with the current detection device, the voltage detection device, the wireless communication device and the energy storage element.
2. The fault reminding device according to claim 1, wherein the current detection device comprises a current transformer, a current detection resistor, a rectification circuit and a zener diode, a primary winding of the current transformer is connected in series with an input side of the switching power supply device, one end of a secondary winding of the current transformer is connected with one end of the current detection resistor and is connected with the fault detection device through the rectification circuit, and the other end of the secondary winding of the current transformer is grounded; the other end of the current detection resistor is grounded, the cathode of the voltage stabilizing diode is connected with the common end of the rectifying circuit and the fault detection device, and the anode of the voltage stabilizing diode is grounded.
3. The fault warning device according to claim 2, wherein the rectifying circuit includes a schottky diode and a capacitor, an anode of the schottky diode is connected to the secondary winding of the current transformer, a cathode of the schottky diode is connected to the fault detection device, one end of the capacitor is connected to a cathode of the schottky diode, and the other end of the capacitor is grounded.
4. The device according to claim 1, wherein the voltage detection device comprises a motor power voltage division detection circuit and a main control power voltage division detection circuit, the motor power voltage division detection circuit is connected with a motor power terminal of the switching power device and the fault detection device, and the main control power voltage division detection circuit is connected with a main control power terminal of the switching power device and the fault detection device.
5. The device for reminding of faults as claimed in claim 4, wherein the main control power supply voltage division detection circuit comprises a first resistor and a second resistor, the first resistor and the second resistor are connected in series, a common end of the first resistor is connected with the fault detection device, the other end of the first resistor is connected with a main control power supply end of the switch power supply device, and the other end of the second resistor is grounded.
6. The malfunction alerting device of claim 1, wherein the controller is an MCU.
7. An electric device, comprising a power input device, a switching power supply device, a motor, a main control device and the fault reminding device as claimed in any one of claims 1 to 6, wherein the input side of the switching power supply device is connected with the power input device and the current detection device, and the output side of the switching power supply device is connected with the motor, the main control device and the voltage detection device.
8. The electrical equipment of claim 7, wherein the power input device comprises a rectifier bridge that connects the input sides of the switching power supply devices.
9. The electric device according to claim 8, wherein the switching power supply device includes a switching tube and a transformer, the transformer including a first primary winding, a second primary winding, and a secondary winding,
one end of the first primary winding is connected with the rectifier bridge, the other end of the first primary winding is connected with the input end of the switch tube, the output end of the switch tube is connected with the current detection device, and the control end of the switch tube is used for receiving PWM signals; the second primary winding is connected with the main control device, and the secondary winding is connected with the motor.
10. The electrical device of claim 7, wherein the electrical device is an air conditioner, a refrigerator, or an air purifier.
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| CN201921378500.3U CN211123070U (en) | 2019-08-22 | 2019-08-22 | Electric equipment's trouble reminding device and electric equipment |
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| CN201921378500.3U CN211123070U (en) | 2019-08-22 | 2019-08-22 | Electric equipment's trouble reminding device and electric equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110346671A (en) * | 2019-08-22 | 2019-10-18 | 珠海格力电器股份有限公司 | Failure based reminding method, device and the electrical equipment of electrical equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110346671A (en) * | 2019-08-22 | 2019-10-18 | 珠海格力电器股份有限公司 | Failure based reminding method, device and the electrical equipment of electrical equipment |
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