CN110208679B - Mainboard fault query device, system and air conditioning unit - Google Patents
Mainboard fault query device, system and air conditioning unit Download PDFInfo
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- CN110208679B CN110208679B CN201910529411.2A CN201910529411A CN110208679B CN 110208679 B CN110208679 B CN 110208679B CN 201910529411 A CN201910529411 A CN 201910529411A CN 110208679 B CN110208679 B CN 110208679B
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- 238000004378 air conditioning Methods 0.000 title claims description 13
- 238000001514 detection method Methods 0.000 claims abstract description 180
- 230000008878 coupling Effects 0.000 claims abstract description 168
- 238000010168 coupling process Methods 0.000 claims abstract description 168
- 238000005859 coupling reaction Methods 0.000 claims abstract description 168
- 230000002441 reversible effect Effects 0.000 claims abstract description 23
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- 239000003990 capacitor Substances 0.000 claims description 26
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- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 description 6
- 230000005674 electromagnetic induction Effects 0.000 description 5
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- 230000005540 biological transmission Effects 0.000 description 3
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
- G01R31/2812—Checking for open circuits or shorts, e.g. solder bridges; Testing conductivity, resistivity or impedance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
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Abstract
The application relates to a main board fault query device, a system and an air conditioner unit, when main board fault detection is needed, a fault detection device is close to a main board, so that the distance between a detection coupling coil and the main board coupling coil of the main board is smaller than or equal to a preset distance, and after a detection controller sends detection data to a detection memory, the detection coupling coil connected with the detection memory can generate alternating current, thereby causing oscillation of the main board coupling coil. And when the main board coupling coil oscillates, a reverse charging current can be formed to charge corresponding equipment on the main board, so that main board fault data stored in the main board are sent in a current mode, the main board coupling coil oscillates with the detection coupling coil under the action of current corresponding to the main board fault data, and the main board fault data are transmitted to the detection coupling coil and then transmitted to the detection memory in a current mode, so that inquiry operation of the main board fault data is realized, and the main board coupling coil has the advantage of high operation convenience.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a motherboard fault query device, a system, and an air conditioning unit.
Background
With the rapid development of science and technology and the continuous improvement of the living standard of people, the multi-connected air conditioner is widely applied to small and medium-sized buildings and partial public buildings. With the increase of sales volume, the after-sales problem of the air conditioner is more serious, and how to efficiently inquire and analyze the after-sales fault becomes a problem to be solved in the air conditioner industry.
In the multi-connected unit, a wire controller is arranged for recording the historical faults of the main board of the multi-connected unit. When the fault inquiry or analysis is carried out, the historical fault recorded by the linear controller can be read only by powering on, so that the historical fault data of the main board are obtained. Therefore, the conventional motherboard failure query method has a disadvantage of low operation convenience.
Disclosure of Invention
Based on this, it is necessary to provide a motherboard fault query device, a system and an air conditioning unit, aiming at the problem of low operation convenience of the traditional motherboard fault query method.
The device comprises a detection controller, a detection memory and a detection coupling coil, wherein the detection controller is connected with the detection memory, the detection memory is connected with the detection coupling coil, the detection coupling coil is used for being coupled with a main board coupling coil of a main board, the detection controller is used for sending detection data to the detection memory, so that the detection coupling coil connected with the detection memory generates alternating current, the detection coupling coil is used for enabling the main board coupling coil to oscillate to generate reverse charging current to supply power for the main board when the distance between the detection coupling coil and the main board coupling coil is smaller than or equal to a preset distance, and the detection coupling coil is also used for receiving fault data sent by the main board in an oscillating mode and sending the fault data to the detection memory in a current mode.
In one embodiment, the detection memory is an eeprom chip, a first coil pin of the eeprom chip and a second coil pin of the eeprom chip are respectively connected to the detection coupling coil, a data pin of the eeprom chip and a clock pin of the eeprom chip are connected to the detection controller, a read-write enable pin of the eeprom chip is connected to a ground pin of the eeprom chip and is grounded, and a first power pin of the eeprom chip is connected to a second power pin of the eeprom chip and is used for being connected to an external power supply.
In one embodiment, the motherboard fault query device further includes a first resistor, a second resistor, a third resistor and a fourth resistor, one end of the first resistor is connected to the detection controller, the other end of the first resistor is connected to one end of the second resistor and the data pin of the electrically erasable read-only memory chip, the other end of the second resistor is connected to the first power pin, one end of the third resistor is connected to the detection controller, the other end of the third resistor is connected to one end of the fourth resistor and the clock pin of the electrically erasable read-only memory chip, and the other end of the fourth resistor is connected to the first power pin.
In an embodiment, the motherboard fault query device further includes a first capacitor, one end of the first capacitor is connected to the first power pin, and the other end of the first capacitor is grounded.
In one embodiment, the detection controller is a micro control unit controller.
The main board comprises a main board coupling coil, a main board memory and a main board controller, wherein the main board coupling coil is connected with the main board memory, the main board memory is connected with the main board controller, the main board coupling coil is used for generating reverse charging current to supply power to the main board memory through oscillation when the distance between the detection coupling coil and the main board coupling coil is smaller than or equal to a preset distance, fault data sent by the main board memory are sent to the detection coupling coil in an oscillating mode, and the main board memory is used for storing the fault data sent by the main board controller and sending the fault data to the main board coupling coil in a current mode under the action of the reverse charging current.
In one embodiment, the detection coupling coil and the main board coupling coil are coils with the same impedance characteristic and consistent inductance.
In one embodiment, the motherboard further includes a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor, one end of the fifth resistor is connected to the motherboard controller, the other end of the fifth resistor is connected to one end of the sixth resistor and a data pin of the motherboard memory, the other end of the sixth resistor is connected to a third power pin of the motherboard memory, one end of the seventh resistor is connected to the motherboard controller, the other end of the seventh resistor is connected to one end of the eighth resistor and a clock pin of the motherboard memory, the other end of the eighth resistor is connected to a third power pin of the motherboard memory, a read/write enable pin of the motherboard memory is connected to a ground end of the motherboard memory and is grounded, a third power pin of the motherboard memory is connected to a fourth power pin of the motherboard memory and is used for connecting an external power supply, and a third coil pin of the motherboard memory and a fourth coil pin of the motherboard memory are respectively connected to the motherboard coupling coil.
In one embodiment, the motherboard further includes a second capacitor, one end of the second capacitor is connected to the third power pin, and the other end of the second capacitor is grounded.
An air conditioning unit comprises the main board fault query system.
Above-mentioned mainboard trouble inquiry unit, system and air conditioning unit, mainboard trouble inquiry unit is provided with detection controller, detects memory and detects the coupling coil, when need carry out mainboard trouble detection, is close to the mainboard with trouble detection device for the distance between the mainboard coupling coil of detection coupling coil and mainboard is less than or equal to the preset distance, after detection controller sends detection data to detecting memory, the detection coupling coil that is connected with detection memory can produce alternating current, thereby arouses the vibration of mainboard coupling coil. And when the main board coupling coil oscillates, a reverse charging current can be formed to charge corresponding equipment on the main board, so that main board fault data stored in the main board are sent in a current mode, the main board coupling coil oscillates with the detection coupling coil under the action of current corresponding to the main board fault data, the main board fault data are transmitted to the detection coupling coil, and then the detection memory is transmitted in a current mode, and the inquiry operation of the main board fault data is realized. The scheme provides a no power type mainboard fault inquiry mode, does not need to power on the mainboard, only needs to place the mainboard fault inquiry device close to the mainboard, can realize inquiry and collection of mainboard fault data, has the advantage that the operation convenience is high.
Drawings
FIG. 1 is a schematic diagram of a motherboard fault query device in an embodiment;
FIG. 2 is a schematic diagram of a motherboard fault query device in another embodiment;
fig. 3 is a schematic structural diagram of a motherboard fault query system in an embodiment.
Detailed Description
In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, a motherboard fault query apparatus includes a detection controller 100, a detection memory 200, and a detection coupling coil 300, wherein the detection controller 100 is connected to the detection memory 200, the detection memory 200 is connected to the detection coupling coil 300, the detection coupling coil 300 is used for coupling with a motherboard coupling coil (not shown) of a motherboard, the detection controller 100 is used for transmitting detection data to the detection memory 200 so that the detection coupling coil 300 connected to the detection memory 200 generates an alternating current, and the detection coupling coil 300 is used for oscillating the motherboard coupling coil to generate a reverse charging current to supply power to the motherboard when a distance between the detection coupling coil 300 and the motherboard coupling coil is less than or equal to a preset distance, and the detection coupling coil 300 is also used for receiving the motherboard fault data transmitted in an oscillating manner and transmitting the fault data to the detection memory 200 in a current manner.
Specifically, the sensing controller 100 is a device for controlling the sensing memory 200 and the sensing coupling coil 300 to operate, thereby transmitting an electric signal to the main board through the main board coupling coil. The type of the detection data is not unique, and may be an electrical signal generated when the motherboard fault query device is powered on, or a signal transmitted by the detection controller 100 when the user needs to perform the motherboard fault query after the motherboard fault query device is powered on, so long as the detection coupling coil 300 connected to the detection memory 200 can generate an alternating current. When the user approaches the main board fault query device to the main board (i.e. the detection coupling coil 300 and the main board coupling coil are close to each other), and when the distance between the detection coupling coil 300 and the main board coupling coil is smaller than or equal to the distance (i.e. the preset distance) capable of generating resonance, the detection coupling coil 300 and the main board coupling coil will resonate, and based on the electromagnetic induction principle, the transmission of current or signals can be realized. It should be noted that, the detection controller 100 may send the detection data before the operation of the user moving the motherboard fault querying device closer to the motherboard, or after the operation of the user moving the motherboard fault querying device closer to the motherboard, that is, when the distance between the motherboard coupling coil and the detection coupling coil 300 is less than or equal to the preset distance, the detection data may be sent by the detection controller 100.
When alternating current is generated on the detection coupling coil 300, and after the distance between the detection coupling coil 300 and the main board coupling coil is smaller than or equal to the preset distance, the main board coupling coil can oscillate under the action of the alternating current, so that reverse charging current is formed and sent to a storage device of the main board, and working current is provided for the storage device of the main board, and the storage device is enabled to activate and send stored main board fault data. Similarly, after the fault data stored in the storage device is sent to the motherboard coupling coil, the motherboard coupling coil oscillates to generate an alternating current, and the motherboard fault data is transmitted to the detection memory 200 and the detection controller 100 in the form of the alternating current through the oscillation between the motherboard coupling coil and the detection coupling coil 300, so as to realize the detection operation of the motherboard fault inquiry device on the motherboard fault.
It should be noted that in one embodiment, the read distance of the motherboard fault querying device (i.e., the distance at which resonance can occur between the sense coupling coil 300 and the motherboard coupling coil) is adjustable. When the power supply voltage or power supply current of the main board fault inquiring device is larger, the reading distance of the corresponding main board fault inquiring device is also larger. Through above-mentioned mainboard trouble inquiry unit, when carrying out the mainboard trouble inquiry of mainboard, need not go up the electricity to the mainboard, realize that the mainboard does not have the electricity and inquires about historical trouble, have the advantage that the operating convenience is high. Meanwhile, as the main board is not required to be directly electrified, no larger voltage exists on the main board during the main board fault query, and the safety of the main board fault query operation is ensured.
Referring to fig. 2, in one embodiment, the detection Memory 200 is an eeprom (Electronically Erasable Read-Only Memory) chip, a first coil pin L1 of the eeprom chip and a second coil pin L2 of the eeprom chip are respectively connected to the detection coupling coil 300, a data pin SDA1 of the eeprom chip and a clock pin SCL1 of the eeprom chip are connected to the detection controller 100, a read/write enable pin WP1 of the eeprom chip is connected to a ground pin GND of the eeprom chip and is grounded (not shown), and a first power pin VCC1 of the eeprom chip is connected to a second power pin VCC2 of the eeprom chip and is used for connecting an external power supply.
Specifically, the first power supply pin VCC1 and the second power supply pin VCC2 of the EEROM chip are connected and used for connecting the same external power supply, and the power supply is input from the first power supply pin VCC1 and the second power supply pin VCC2 to supply power for the normal operation of the EEROM chip. The first coil pin L1 of the EEROM chip and the second coil pin L2 of the EEROM chip are used for outputting the detection data sent from the detection memory 200 to the EEROM chip in the form of alternating current to drive the detection coupling coil 300, and can be enabled by the detection coupling coil 300 to input the motherboard fault data to the interior of the EEROM chip. It can be understood that the read-write enabling pin of the EEROM chip is connected to the ground pin and is grounded at the same time, so that the EEROM chip defaults to enable, when the detection coupling coil 300 is close to the motherboard coupling coil, the inquiry and the reading operation of the motherboard fault data can be directly performed according to the electromagnetic induction principle.
It should be noted that the type of the detection memory 200 is not exclusive, and is not limited to the EEROM chip in the present embodiment, but may be an EEPROM (ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY ) chip or the like. As long as it is possible to cause the detection coupling coil 300 to vibrate according to the detection data to generate an alternating current and to receive the main board fault data transmitted by the main board coupling coil in the form of current oscillation when the distance between the detection coupling coil 300 and the main board coupling coil is less than or equal to a preset current value.
Referring to fig. 2, in one embodiment, the motherboard fault query device further includes a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4, where one end of the first resistor R1 is connected to the detection controller 100, the other end of the first resistor R1 is connected to one end of the second resistor R2 and the data pin SDA1 of the eeprom, the other end of the second resistor R2 is connected to the first power pin VCC1, one end of the third resistor R3 is connected to the detection controller 100, the other end of the third resistor R3 is connected to one end of the fourth resistor R4 and the clock pin SCL1 of the eeprom, and the other end of the fourth resistor R4 is connected to the first power pin VCC1.
Specifically, in this embodiment, the data pin and the clock pin of the EEROM chip are respectively connected to the external power supply through the second resistor R2 and the fourth resistor R4, while the data pin of the EEROM chip is connected to the corresponding data input/output (I/O) port on the detection controller 100 through the first resistor R1, and the enable pin of the EEROM chip is also correspondingly connected to the corresponding port on the detection controller 100 through the third resistor R3. Through the arrangement of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4, the EEROM chip can be ensured to input stable and safe voltage, so that the working reliability of the EEROM chip is ensured.
Referring to fig. 2, in one embodiment, the motherboard fault query device further includes a first capacitor C1, one end of the first capacitor C1 is connected to the first power pin VCC1, and the other end of the first capacitor C1 is grounded.
Specifically, in this embodiment, a capacitor is disposed between the first power input pin of the detection memory 200 and the external power source, and the capacitor has an anti-interference effect. One end of the first capacitor C1 is connected with an external power supply, and the other end of the first capacitor C1 is grounded, so that the external power supply is guaranteed to provide a stable power supply for the EEROM chip, meanwhile, noise of the EEROM chip coupled to a power supply end can be reduced, other elements can be indirectly reduced from being influenced by the noise of the EEROM chip, and the working stability of the EEROM chip is further guaranteed.
In one embodiment, the detection controller 100 is a micro-control unit controller.
Specifically, the micro control unit controller (Microcontroller Unit, MCU) is a computer which properly reduces the frequency and specification of the CPU (Central Process Unit), and integrates peripheral interfaces such as memory (memory), counter (Timer), USB, A/D conversion, UART, PLC, DMA, and the like, and even LCD driving circuits on a single chip to form a chip level. The detection data transmission in the main board fault inquiring device is realized through the MCU, so that the control of the whole main board fault inquiring device on the reading operation of the main board fault data is realized, and the method has the advantages of simple control mode and easy realization.
The above-mentioned main board fault query device is provided with the detection controller 100, the detection memory 200 and the detection coupling coil 300, when the main board fault detection is required, the fault detection device is close to the main board, so that the distance between the detection coupling coil 300 and the main board coupling coil of the main board is smaller than or equal to the preset distance, and after the detection controller 100 sends detection data to the detection memory 200, the detection coupling coil 300 connected with the detection memory 200 can generate alternating current, thereby causing oscillation of the main board coupling coil. And when the main board coupling coil oscillates, a reverse charging current can be formed to charge corresponding equipment on the main board, so that main board fault data stored in the main board is sent in a current form, and the main board coupling coil oscillates with the detection coupling coil 300 under the action of current corresponding to the main board fault data, so that the main board fault data is transmitted to the detection coupling coil 300, and then transmitted to the detection memory 200 in a current form, and the inquiry operation of the main board fault data is realized. The scheme provides a no power type mainboard fault inquiry mode, does not need to power on the mainboard, only needs to place the mainboard fault inquiry device close to the mainboard, can realize inquiry and collection of mainboard fault data, has the advantage that the operation convenience is high.
Referring to fig. 3, a motherboard fault query system includes a motherboard 20 and the motherboard fault query device 10 described above, where the motherboard 20 includes a motherboard coupling coil 400, a motherboard memory 500, and a motherboard controller 600, where the motherboard coupling coil 400 is connected to the motherboard memory 500, and where the motherboard memory 500 is connected to the motherboard controller 600, and where the motherboard coupling coil 400 is configured to oscillate to generate a reverse charging current to supply power to the motherboard memory 500 and to send fault data sent by the motherboard memory 500 to the motherboard coupling coil 300 in an oscillating manner when a distance between the motherboard coupling coil 300 and the motherboard coupling coil 400 is less than or equal to a preset distance, and where the motherboard memory 500 is configured to store the fault data sent by the motherboard controller 600 and to send the fault data to the motherboard coupling coil 400 in a current manner under the effect of the reverse charging current.
Specifically, corresponding to the motherboard fault query apparatus 10, the motherboard is correspondingly provided with a motherboard coupling coil 400, a motherboard memory 500 and a motherboard controller 600, and the motherboard memory 500 stores historical fault data of the motherboard and corresponding data for driving and controlling the operation of the unit. If a fault occurs in the unit during operation, the motherboard controller 600 stores the fault data in the motherboard memory 500 in real time, so that the latest motherboard fault data can be obtained in time when the motherboard fault query device 10 performs a fault query. When the distance between the detection coupling coil 300 and the main board coupling coil 400 is less than or equal to the preset distance, the main board coupling coil 400 oscillates under the action of the alternating current generated by the detection coupling coil 300, thereby generating a reverse charging current and transmitting the reverse charging current to the main board memory 500 connected to the main board coupling coil 400. The main board memory 500 is activated by the charging circuit, and the main board fault data stored in the main board memory 500 is output to the main board coupling coil 400 in the form of alternating current. Under the action of alternating current, oscillation occurs between the detection coupling coil 300 and the main board coupling coil 400, and based on the electromagnetic induction principle, it can be known that main board fault data will be transmitted to the detection memory 200 connected with the detection coupling coil 300, so that the inquiry operation of the main board fault data is completed.
In one embodiment, the detection coupling coil 300 and the main board coupling coil 400 are coils having the same impedance characteristics and the same inductance. Specifically, in the embodiment, the impedance characteristic and the inductance of the coupling line coil are detected to be uniform, so that the stability of main board fault data transmission is ensured. Further, in one embodiment, the detecting coupling coil 300 and the main board coupling coil 400 may be identical coils, and it is also ensured that no distortion occurs when the main board fault data is transmitted from the main board coupling coil 400 to the detecting coupling coil 300 and the detecting memory 200.
Referring to fig. 3, in one embodiment, the motherboard 20 further includes a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8, one end of the fifth resistor R5 is connected to the motherboard controller 600, the other end of the fifth resistor R5 is connected to one end of the sixth resistor R6 and the data pin SDA2 of the motherboard memory 500, the other end of the sixth resistor R6 is connected to the third power pin VCC3 of the motherboard memory 500, one end of the seventh resistor R7 is connected to the motherboard controller 600, the other end of the seventh resistor R7 is connected to one end of the eighth resistor R8 and the clock pin SCL2 of the motherboard memory 500, the other end of the eighth resistor R8 is connected to the third power pin VCC3 of the motherboard memory 500, the read/write enable pin WP2 of the motherboard memory 500 is connected to the ground GND of the motherboard memory 500 (not shown), the third power pin VCC3 of the motherboard memory 500 is connected to the fourth power pin SDA 4 of the motherboard memory 500 and is used for connecting an external power, and the third coil pin L3 of the motherboard memory 500 and the fourth coil pin L4 of the motherboard memory 500 are respectively connected to the motherboard 400.
Specifically, as with the test memory 200 described above, in this embodiment, the motherboard memory 500 is also an electrically erasable read only memory chip (EEROM). The EEROM chip internally stores main board fault data and basic data of unit operation, and when the main board is damaged and power is off, the data stored in the EEROM chip cannot be erased. The third coil pin L3 and the fourth coil pin L4 of the main board memory 500 are respectively connected with the main board coupling coil 400, so that main board fault data in the main board memory 500 can be output to drive the main board coupling coil 400 in an alternating current mode, and can be enabled by the main board coupling coil 400, so that power is supplied to the main board memory 500 according to the reverse alternating current generated by the main board coupling coil 400. The third coil pin L3 and the fourth coil pin L4 have a synchronous enabling function, and if a reverse charging current is detected, the main board memory 500 is enabled to transmit main board fault data.
The read/write enable pin WP2 of the main board memory 500 is connected to the ground pin GND while being grounded, so that the read/write enable pin WP2 is enabled by default. The data pin SDA2 and the clock pin SCL2 of the motherboard memory 500 are respectively connected to an external power supply through a sixth resistor R6 and an eighth resistor R8, and meanwhile, the data pin SDA2 of the motherboard memory 500 is connected to a corresponding data input/output (I/O) port on the motherboard controller 600 through a fifth resistor R5, and an enable pin of the motherboard memory 500 is correspondingly connected to a corresponding port on the motherboard controller 600 through a seventh resistor R7. By setting the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, and the eighth resistor R8, the operation stability of the main board memory 500 is ensured. When the third power supply pin VCC3 and the fourth power supply pin VCC4 of the main board memory 500 are both connected to an external power supply, that is, the main board is not powered on to operate, the main board memory 500 is provided with reverse charging current by the main board fault query device 10 based on the electromagnetic induction principle, so that the main board memory 500 outputs the stored main board fault data.
Also, the type of the detection memory 200 is not exclusive, and is not limited to the EEROM chip in the present embodiment, but may be an EEPROM chip or the like. As long as the power supply can be performed according to the reverse charging current generated by the main board coupling coil 400 when the distance between the detection coupling coil 300 and the main board coupling coil 400 is less than or equal to the preset current value without energizing the corresponding power supply pins, the stored main board fault data can be output in the form of alternating current. It will be appreciated that in one embodiment, motherboard controller 600 is also an MCU.
Referring to fig. 3, in one embodiment, the motherboard further includes a second capacitor C2, one end of the second capacitor C2 is connected to the third power pin VCC3, and the other end of the second capacitor C2 is grounded.
Specifically, a capacitor is disposed between the third power input pin of the motherboard memory 500 and the external power source, and the capacitor has an anti-interference effect. One end of the second capacitor C2 is connected to an external power supply, and the other end of the second capacitor C2 is grounded, so that under the condition of power-on, the external power supply provides a stable power supply for the main board memory 500, and meanwhile, noise of the main board memory 500 coupled to the power supply end can be reduced, the influence of other elements on the noise of the main board memory 500 can be reduced indirectly, and the working stability of the main board memory 500 is further ensured.
In the above-mentioned motherboard fault query system, the motherboard fault query device 10 is provided with the detection controller 100, the detection memory 200 and the detection coupling coil 300, when motherboard fault detection is required, the fault detection device is close to the motherboard, so that the distance between the detection coupling coil 300 and the motherboard coupling coil 400 of the motherboard is smaller than or equal to the preset distance, and after the detection controller 100 sends detection data to the detection memory 200, the detection coupling coil 300 connected with the detection memory 200 can generate alternating current, thereby causing oscillation of the motherboard coupling coil 400. And when the main board coupling coil 400 oscillates, a reverse charging current can be formed to charge corresponding equipment on the main board, so that main board fault data stored in the main board is sent in a current form, and the main board coupling coil 400 oscillates with the detection coupling coil 300 under the action of current corresponding to the main board fault data, so that the main board fault data is transmitted to the detection coupling coil 300, and then transmitted to the detection memory 200 in a current form, and the inquiry operation of the main board fault data is realized. The above scheme provides a no power type mainboard trouble inquiry mode, does not need to power on the mainboard, only needs to place mainboard trouble inquiry unit 10 near the mainboard, can realize inquiry and the collection of mainboard trouble data, has the advantage that the operating convenience is high.
An air conditioning unit comprises the main board fault query system.
Specifically, as shown in fig. 3, the above-mentioned main board fault query system is applied to an air conditioning unit, and the corresponding main board is the main board of the air conditioning unit, and if the air conditioning unit fails during operation, corresponding fault information will be stored in the main board memory 500. The main board of the air conditioning unit is provided with a main board coupling coil 400, a main board memory 500 and a main board controller 600, wherein the main board memory 500 stores historical fault data of the main board and corresponding data for driving and controlling the operation of the unit. If a fault occurs in the unit during operation, the motherboard controller 600 stores the fault data in the motherboard memory 500 in real time, so that the latest motherboard fault data can be obtained in time when the motherboard fault query device 10 performs a fault query. When the distance between the detection coupling coil 300 and the main board coupling coil 400 is less than or equal to the preset distance, the main board coupling coil 400 oscillates under the action of the alternating current generated by the detection coupling coil 300, thereby generating a reverse charging current and transmitting the reverse charging current to the main board memory 500 connected to the main board coupling coil 400. The main board memory 500 is activated by the charging circuit, and the main board fault data stored in the main board memory 500 is output to the main board coupling coil 400 in the form of alternating current. Under the action of alternating current, oscillation occurs between the detection coupling coil 300 and the main board coupling coil 400, and based on the electromagnetic induction principle, it can be known that main board fault data will be transmitted to the detection memory 200 connected with the detection coupling coil 300, so that the inquiry operation of the main board fault data is completed.
In the above air conditioning unit, the main board fault query device 10 is provided with the detection controller 100, the detection memory 200 and the detection coupling coil 300, when main board fault detection is required, the fault detection device is close to the main board, so that the distance between the detection coupling coil 300 and the main board coupling coil 400 of the main board is smaller than the preset distance, and after the detection controller 100 sends detection data to the detection memory 200, the detection coupling coil 300 connected with the detection memory 200 can generate alternating current, thereby causing oscillation of the main board coupling coil 400. And when the main board coupling coil 400 oscillates, a reverse charging current can be formed to charge corresponding equipment on the main board, so that main board fault data stored in the main board is sent in a current form, and the main board coupling coil 400 oscillates with the detection coupling coil 300 under the action of current corresponding to the main board fault data, so that the main board fault data is transmitted to the detection coupling coil 300, and then transmitted to the detection memory 200 in a current form, and the inquiry operation of the main board fault data is realized. The above scheme provides a no power type mainboard trouble inquiry mode, does not need to power on the mainboard, only needs to place mainboard trouble inquiry unit 10 near the mainboard, can realize inquiry and the collection of mainboard trouble data, has the advantage that the operating convenience is high.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (9)
1. A main board fault inquiry device is characterized by comprising a detection controller, a detection memory and a detection coupling coil, wherein the detection controller is connected with the detection memory, the detection memory is connected with the detection coupling coil, the detection coupling coil is used for being coupled with the main board coupling coil of a main board,
The detection controller is used for sending detection data to the detection memory so that the detection coupling coil connected with the detection memory generates alternating current, and the detection coupling coil is used for enabling the main board coupling coil to oscillate so as to generate reverse charging current for supplying power to the main board when the distance between the detection coupling coil and the main board coupling coil is smaller than or equal to a preset distance;
The detection memory is an electrically erasable read-only memory chip, a first coil pin of the electrically erasable read-only memory chip and a second coil pin of the electrically erasable read-only memory chip are respectively connected with the detection coupling coil, a data pin of the electrically erasable read-only memory chip and a clock pin of the electrically erasable read-only memory chip are connected with the detection controller, a read-write enabling pin of the electrically erasable read-only memory chip is connected with a grounding pin of the electrically erasable read-only memory chip and grounded, and a first power pin of the electrically erasable read-only memory chip is connected with a second power pin of the electrically erasable read-only memory chip and is used for being connected with an external power supply.
2. The motherboard fault query device according to claim 1, further comprising a first resistor, a second resistor, a third resistor, and a fourth resistor, wherein one end of the first resistor is connected to the detection controller, the other end of the first resistor is connected to one end of the second resistor and a data pin of the eeprom, the other end of the second resistor is connected to the first power pin, one end of the third resistor is connected to the detection controller, the other end of the third resistor is connected to one end of the fourth resistor and a clock pin of the eeprom, and the other end of the fourth resistor is connected to the first power pin.
3. The motherboard fault query device of claim 2, further comprising a first capacitor, wherein one end of the first capacitor is connected to the first power pin, and the other end of the first capacitor is grounded.
4. A motherboard fault querying device according to any one of claims 1 to 3 wherein said detection controller is a micro-control unit controller.
5. A motherboard fault query system, comprising a motherboard and the motherboard fault query device of any one of claims 1-4, wherein the motherboard comprises a motherboard coupling coil, a motherboard memory, and a motherboard controller, the motherboard coupling coil is connected to the motherboard memory, the motherboard memory is connected to the motherboard controller,
The main board coupling coil is used for generating reverse charging current by oscillation to supply power for the main board memory when the distance between the detection coupling coil and the main board coupling coil is smaller than or equal to a preset distance, and sending fault data sent by the main board memory to the detection coupling coil in an oscillation mode, and the main board memory is used for storing the fault data sent by the main board controller and sending the fault data to the main board coupling coil in a current mode under the action of the reverse charging current.
6. The motherboard fault query system of claim 5, wherein said sense coupling coil and said motherboard coupling coil are coils having identical impedance characteristics and identical inductance.
7. The motherboard fault query system according to claim 5, wherein the motherboard further comprises a fifth resistor, a sixth resistor, a seventh resistor, and an eighth resistor, one end of the fifth resistor is connected to the motherboard controller, the other end of the fifth resistor is connected to one end of the sixth resistor and the data pin of the motherboard memory, the other end of the sixth resistor is connected to the third power pin of the motherboard memory, one end of the seventh resistor is connected to the motherboard controller, the other end of the seventh resistor is connected to one end of the eighth resistor and the clock pin of the motherboard memory, the other end of the eighth resistor is connected to the third power pin of the motherboard memory, the read/write enable pin of the motherboard memory is connected to the ground terminal of the motherboard memory, the third power pin of the motherboard memory is connected to the fourth power pin of the motherboard memory and is used for connecting an external power source, and the third coil pin of the motherboard memory and the fourth coil pin of the motherboard memory are respectively connected to the motherboard coupling coil.
8. The motherboard fault query system of claim 7, wherein said motherboard further comprises a second capacitor, one end of said second capacitor being connected to said third power pin, and the other end of said second capacitor being grounded.
9. An air conditioning unit comprising the motherboard fault query system of any of claims 5-8.
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