Mainboard fault query device, system and air conditioning unit

Abstract

The present application relates to a mainboard fault query device, system and air conditioning unit. When mainboard fault detection is required, the fault detection device is placed close to the mainboard so that the distance between the detection coupling coil and the mainboard coupling coil of the mainboard is less than or equal to the preset distance. After the detection controller sends the detection data to the detection memory, the detection coupling coil connected to the detection memory can generate an alternating current, thereby causing the mainboard coupling coil to oscillate. When the mainboard coupling coil oscillates, a reverse charging current can be formed to charge the corresponding device on the mainboard, thereby sending the mainboard fault data stored in the mainboard in the form of current. Under the action of the current corresponding to the mainboard fault data, the mainboard coupling coil oscillates with the detection coupling coil, thereby transmitting the mainboard fault data to the detection coupling coil, and then transmitting it to the detection memory in the form of current, thereby realizing the query operation of the mainboard fault data, which has the advantage of high operational convenience.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a mainboard fault query device, system and air conditioning unit. Background Art

[0002] With the rapid development of science and technology and the continuous improvement of people's living standards, multi-split air conditioners are increasingly widely used in small and medium-sized buildings and some public buildings. With the increase in sales, the after-sales problems of air conditioners are becoming more and more serious. How to efficiently query and analyze after-sales faults has become an urgent problem to be solved in the air conditioner industry.

[0003] In a multi-split unit, a wire controller is provided to record the historical faults of the motherboard of the multi-split unit. When performing fault query or analysis, it is necessary to power on to read the historical faults recorded by the wire controller, thereby obtaining the historical fault data of the motherboard. Therefore, the traditional motherboard fault query method has the disadvantage of low operational convenience. Summary of the invention

[0004] Based on this, it is necessary to provide a motherboard fault query device, system and air conditioning unit to address the problem of low operational convenience of traditional motherboard fault query methods.

[0005] A mainboard fault query device, the device comprising: a detection controller, a detection memory and a detection coupling coil, the detection controller is connected to the detection memory, the detection memory is connected to the detection coupling coil, the detection coupling coil is used to couple with the mainboard coupling coil of the mainboard, the detection controller is used to send detection data to the detection memory, so that the detection coupling coil connected to the detection memory generates an alternating current; the detection coupling coil is used to make the mainboard coupling coil oscillate to generate a reverse charging current to power the mainboard when the distance between the detection coupling coil and the mainboard coupling coil is less than or equal to a preset distance; the detection coupling coil is also used to receive fault data sent by the mainboard in the form of oscillation, and send the fault data to the detection memory in the form of current.

[0006] In one embodiment, the detection memory is an electrically erasable read-only memory chip, the first coil pin of the electrically erasable read-only memory chip and the second coil pin of the electrically erasable read-only memory chip are respectively connected to the detection coupling coil, the data pin of the electrically erasable read-only memory chip and the clock pin of the electrically erasable read-only memory chip are connected to the detection controller, the read-write enable pin of the electrically erasable read-only memory chip is connected to the ground pin of the electrically erasable read-only memory chip and is grounded, and the first power pin of the electrically erasable read-only memory chip is connected to the second power pin of the electrically erasable read-only memory chip and is used to connect an external power supply.

[0007] In one embodiment, the mainboard fault query device also 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.

[0008] In one embodiment, the mainboard 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.

[0009] In one embodiment, the detection controller is a micro control unit controller.

[0010] A motherboard fault query system comprises a motherboard and the above-mentioned motherboard fault query device, 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 motherboard coupling coil is used to oscillate to generate a reverse charging current to power the motherboard memory when the distance between the detection coupling coil and the motherboard coupling coil is less than or equal to a preset distance, and to send the fault data sent by the motherboard memory to the detection coupling coil in the form of oscillation; the motherboard memory is used to store the fault data sent by the motherboard controller, and send the fault data to the motherboard coupling coil in the form of current under the action of the reverse charging current.

[0011] In one embodiment, the detection coupling coil and the mainboard coupling coil are coils with the same impedance characteristics and the same inductance.

[0012] In one embodiment, the mainboard also includes a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor, one end of the fifth resistor is connected to the mainboard controller, the other end of the fifth resistor is connected to one end of the sixth resistor and a data pin of the mainboard memory, the other end of the sixth resistor is connected to a third power pin of the mainboard memory, one end of the seventh resistor is connected to the mainboard controller, the other end of the seventh resistor is connected to one end of the eighth resistor and a clock pin of the mainboard memory, the other end of the eighth resistor is connected to the third power pin of the mainboard memory, the read and write enable pin of the mainboard memory is connected to the ground terminal of the mainboard memory and is grounded, the third power pin of the mainboard memory is connected to the fourth power pin of the mainboard memory and is used to connect an external power supply, and the third coil pin of the mainboard memory and the fourth coil pin of the mainboard memory are respectively connected to the mainboard coupling coil.

[0013] In one embodiment, the mainboard 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.

[0014] An air conditioning unit comprises the above-mentioned mainboard fault query system.

[0015] In the above-mentioned motherboard fault query device, system and air conditioning unit, the motherboard fault query device is provided with a detection controller, a detection memory and a detection coupling coil. When a motherboard fault detection is required, the fault detection device is placed close to the motherboard so that the distance between the detection coupling coil and the motherboard coupling coil of the motherboard is less than or equal to the preset distance. After the detection controller sends the detection data to the detection memory, the detection coupling coil connected to the detection memory can generate an alternating current, thereby causing the motherboard coupling coil to oscillate. When the motherboard coupling coil oscillates, a reverse charging current can be formed to charge the corresponding device on the motherboard, thereby sending the motherboard fault data stored in the motherboard in the form of current. Under the action of the current corresponding to the motherboard fault data, the motherboard coupling coil oscillates with the detection coupling coil, thereby transmitting the motherboard fault data to the detection coupling coil, and then transmitting it to the detection memory in the form of current, thereby realizing the query operation of the motherboard fault data. The above scheme provides a power-free motherboard fault query method, which does not require the motherboard to be powered on. It only needs to place the motherboard fault query device close to the motherboard to realize the query and collection of the motherboard fault data, and has the advantage of high operational convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a mainboard fault query device in one embodiment;

[0017] Figure 2 This is a schematic diagram of the structure of a mainboard fault query device in another embodiment;

[0018] Figure 3 Schematic diagram of the structure of a mainboard fault query system in one embodiment. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0020] See also Figure 1 A motherboard fault query device includes: a detection controller 100, a detection memory 200 and a detection coupling coil 300, 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 to couple with the motherboard coupling coil of the motherboard (not shown), the detection controller 100 is used to send detection data to the detection memory 200, so that the detection coupling coil 300 connected to the detection memory 200 generates an alternating current; the detection coupling coil 300 is used to make the motherboard coupling coil oscillate to generate a reverse charging current to power the motherboard when the 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 to receive fault data sent by the motherboard in the form of oscillation, and send the fault data to the detection memory 200 in the form of current.

[0021] Specifically, the detection controller 100 is a device used to control the detection memory 200 and the detection coupling coil 300 to work, so as to transmit the electrical signal to the mainboard through the mainboard coupling coil. The type of detection data is not unique, and it can be an electrical signal generated when the mainboard fault query device is powered on, or it can be a signal sent by the detection controller 100 when the user needs to perform a mainboard fault query after the mainboard fault query device is powered on, as long as it can make the detection coupling coil 300 connected to the detection memory 200 generate an alternating current. When the user brings the mainboard fault query device close to the mainboard (that is, the detection coupling coil 300 and the mainboard coupling coil are close to each other), and when the distance between the two is less than or equal to the distance that can generate resonance (that is, the preset distance), the detection coupling coil 300 and the mainboard coupling coil will resonate, and based on the principle of electromagnetic induction, the transmission of current or signal can be achieved. It should be pointed out that the detection controller 100 sends the detection data before or after the user moves the mainboard fault query device close to the mainboard, that is, the detection data will be sent through the detection controller 100 only when the distance between the mainboard coupling coil and the detection coupling coil 300 is less than or equal to the preset distance.

[0022] When an alternating current is generated on the detection coupling coil 300, and the distance between the detection coupling coil 300 and the mainboard coupling coil is less than or equal to the preset distance, the mainboard coupling coil will oscillate under the action of the alternating current, thereby forming a reverse charging current that is sent to the storage device of the mainboard, etc., to provide working current for the storage device of the mainboard, so that the storage device is activated to send out the stored mainboard fault data. Similarly, when the fault data stored in the storage device is sent to the mainboard coupling coil, the mainboard coupling coil will oscillate to generate an alternating current, and the mainboard fault data will be transmitted to the detection memory 200 and the detection controller 100 in the form of an alternating current through the oscillation between the mainboard coupling coil and the detection coupling coil 300, thereby realizing the detection operation of the mainboard fault query device on the mainboard fault.

[0023] It should be noted that, in one embodiment, the reading distance of the mainboard fault query device (i.e., the distance at which resonance can be generated between the detection coupling coil 300 and the mainboard coupling coil) can be adjusted. The greater the power supply voltage or power supply current of the mainboard fault query device, the greater the corresponding reading distance of the mainboard fault query device. By using the above-mentioned mainboard fault query device, when performing a mainboard fault query of the mainboard, it is not necessary to power on the mainboard, so that the mainboard can be queried for historical faults without power, which has the advantage of high operational convenience. At the same time, since it is not necessary to directly power on the mainboard, it is avoided that there is no large voltage on the mainboard when the mainboard fault query is performed, thereby ensuring the safety of the mainboard fault query operation.

[0024] See also Figure 2 In one embodiment, the detection memory 200 is an Electrically Erasable Read-Only Memory (EEROM) chip, the first coil pin L1 of the EEROM chip and the second coil pin L2 of the EEROM chip are respectively connected to the detection coupling coil 300, the data pin SDA1 of the EEROM chip and the clock pin SCL1 of the EEROM chip are connected to the detection controller 100, the read-write enable pin WP1 of the EEROM chip is connected to the ground pin GND of the EEROM chip and grounded (not shown), and the first power pin VCC1 of the EEROM chip is connected to the second power pin VCC2 of the EEROM chip and is used to connect an external power supply.

[0025] Specifically, the first power pin VCC1 of the EEROM chip is connected to the second power pin VCC2, and is used to connect to the same external power supply. The power input from the first power pin VCC1 and the second power pin VCC2 is used 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 to output the detection data sent by the detection memory 200 to the EEROM chip in the form of alternating current to drive the detection coupling coil 300, and can also be enabled by the detection coupling coil 300 to input the motherboard fault data to the inside of the EEROM chip. It can be understood that the read and write enable pin of the EEROM chip is connected to the ground pin and is grounded at the same time, so that the EEROM chip is enabled by default. When the detection coupling coil 300 is received close to the motherboard coupling coil, the motherboard fault data can be directly queried and read according to the principle of electromagnetic induction.

[0026] It should be noted that the type of the detection memory 200 is not unique and is not limited to the EEROM chip in this embodiment, and can also be an EEPROM (Electrically Erasable Programmable Read Only Memory) chip, etc. As long as the distance between the detection coupling coil 300 and the mainboard coupling coil is less than or equal to the preset current value, the detection coupling coil 300 is vibrated to generate an alternating current according to the detection data, and the mainboard fault data oscillated and sent by the mainboard coupling coil in the form of current is received.

[0027] See also Figure 2In one embodiment, the mainboard fault query device further includes a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4, 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 a data pin SDA1 of the electrically erasable read-only memory chip, 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 a clock pin SCL1 of the electrically erasable read-only memory chip, and the other end of the fourth resistor R4 is connected to the first power pin VCC1.

[0028] Specifically, in this embodiment, the data pin and the clock pin of the EEROM chip are connected to the external power supply through the second resistor R2 and the fourth resistor R4 respectively, and the data pin of the EEROM chip is connected to the corresponding data input / output port (I / O) port on the detection controller 100 through the first resistor R1, and the enable pin of the EEROM chip is also connected to the corresponding port on the detection controller 100 through the third resistor R3. Through the setting of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4, it is ensured that the EEROM chip can input a stable and safe voltage, thereby ensuring the working reliability of the EEROM chip.

[0029] See also Figure 2 In one embodiment, the mainboard 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.

[0030] Specifically, in this embodiment, a capacitor is provided between the first power input pin of the detection memory 200 and the external power supply, and the capacitor has an anti-interference function. One end of the first capacitor C1 is connected to the external power supply, and the other end of the first capacitor C1 is grounded, thereby ensuring that the external power supply provides a stable power supply for the EEROM chip, and at the same time, the noise coupled to the power supply end by the EEROM chip can be reduced, which can indirectly reduce the influence of the EEROM chip noise on other components, and further ensure the working stability of the EEROM chip.

[0031] In one embodiment, the detection controller 100 is a micro control unit controller.

[0032] Specifically, a microcontroller unit (MCU) is a chip-level computer that appropriately reduces the frequency and specifications of a central processing unit (CPU), and integrates memory, timer, USB, A / D conversion, UART, PLC, DMA and other peripheral interfaces, and even LCD drive circuits on a single chip. The MCU is used to send the detection data in the motherboard fault query device, and then the entire motherboard fault query device controls the reading operation of the motherboard fault data, which has the advantages of simple control method and easy implementation.

[0033] The above-mentioned motherboard fault query device is provided with a detection controller 100, a detection memory 200 and a detection coupling coil 300. When a motherboard fault detection is required, the fault detection device is placed close to the motherboard so that the distance between the detection coupling coil 300 and the motherboard coupling coil of the motherboard is less than or equal to the preset distance. After the detection controller 100 sends the detection data to the detection memory 200, the detection coupling coil 300 connected to the detection memory 200 can generate an alternating current, thereby causing the oscillation of the motherboard coupling coil. When the motherboard coupling coil oscillates, a reverse charging current can be formed to charge the corresponding device on the motherboard, thereby sending the motherboard fault data stored in the motherboard in the form of current. Under the action of the current corresponding to the motherboard fault data, the motherboard coupling coil oscillates with the detection coupling coil 300, thereby transmitting the motherboard fault data to the detection coupling coil 300, and then transmitting it to the detection memory 200 in the form of current, thereby realizing the query operation of the motherboard fault data. The above-mentioned scheme provides a power-free motherboard fault query method, which does not require the motherboard to be powered on. It only needs to place the motherboard fault query device close to the motherboard to realize the query and collection of the motherboard fault data, and has the advantage of high operational convenience.

[0034] See also Figure 3 A motherboard fault query system includes a motherboard 20 and the above-mentioned motherboard fault query device 10, the motherboard 20 includes a motherboard coupling coil 400, a motherboard memory 500 and a motherboard controller 600, the motherboard coupling coil 400 is connected to the motherboard memory 500, the motherboard memory 500 is connected to the motherboard controller 600, the motherboard coupling coil 400 is used to oscillate to generate a reverse charging current to power the motherboard memory 500 when the distance between the detection coupling coil 300 and the motherboard coupling coil 400 is less than or equal to a preset distance, and send the fault data sent by the motherboard memory 500 to the detection coupling coil 300 in the form of oscillation; the motherboard memory 500 is used to store the fault data sent by the motherboard controller 600, and send the fault data to the motherboard coupling coil 400 in the form of current under the action of the reverse charging current.

[0035] Specifically, corresponding to the mainboard fault query device 10, the mainboard is provided with a mainboard coupling coil 400, a mainboard memory 500 and a mainboard controller 600. The mainboard memory 500 stores the mainboard's historical fault data and the corresponding data for driving and controlling the operation of the unit. If a fault occurs during the operation of the unit, the mainboard controller 600 will store the fault data in the mainboard memory 500 in real time, so that the latest mainboard fault data can be obtained in time when the mainboard fault query device 10 performs fault query. When the distance between the detection coupling coil 300 and the mainboard coupling coil 400 is less than or equal to the preset distance, the mainboard 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 sending it to the mainboard memory 500 connected to the mainboard coupling coil 400. The mainboard memory 500 is activated under the action of the charging circuit, and the mainboard fault data stored in the mainboard memory 500 will be output to the mainboard coupling coil 400 in the form of alternating current. Under the action of the alternating current, oscillation occurs between the detection coupling coil 300 and the mainboard coupling coil 400. Based on the principle of electromagnetic induction, the mainboard fault data will be transmitted to the detection memory 200 connected to the detection coupling coil 300, thereby completing the query operation of the mainboard fault data.

[0036] In one embodiment, the detection coupling coil 300 and the mainboard coupling coil 400 are coils with the same impedance characteristics and the same inductance. Specifically, in this embodiment, the impedance characteristics and inductance of the detection coupling line coil are consistent, ensuring the stability of the mainboard fault data during transmission. Further, in one embodiment, the detection coupling coil 300 and the mainboard coupling coil 400 can be completely consistent coils, which can also ensure that the mainboard fault data will not be distorted when it is transmitted from the mainboard coupling coil 400 to the detection coupling coil 300 and the detection memory 200.

[0037] See also Figure 3In one embodiment, the mainboard 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 mainboard 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 mainboard memory 500, the other end of the sixth resistor R6 is connected to the third power pin VCC3 of the mainboard memory 500, one end of the seventh resistor R7 is connected to the mainboard 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 mainboard memory 500, the other end of the eighth resistor R8 is connected to the third power pin VCC3 of the mainboard memory 500, the read / write enable pin WP2 of the mainboard memory 500 is connected to the ground terminal GND of the mainboard memory 500 and is grounded (not shown), the third power pin VCC3 of the mainboard memory 500 is connected to the fourth power pin VCC4 of the mainboard memory 500 and is used to connect to an external power supply, the third coil pin L3 of the mainboard memory 500 and the fourth coil pin L4 of the mainboard memory 500 are respectively connected to the mainboard coupling coil 400.

[0038] Specifically, like the above-mentioned detection memory 200, in this embodiment, the mainboard memory 500 is also an electrically erasable read-only memory chip (EEROM). The EEROM chip stores the mainboard fault data and the basic data of the unit operation. When the mainboard is damaged and the power is cut off, the data stored in the EEROM chip will not be erased. Among them, the third coil pin L3 and the fourth coil pin L4 of the mainboard memory 500 are respectively connected to the mainboard coupling coil 400, and the mainboard fault data inside the mainboard memory 500 can be output in the form of alternating current to drive the mainboard coupling coil 400, and can also be enabled by the mainboard coupling coil 400, so as to power the inside of the mainboard memory 500 according to the reverse alternating current generated by the mainboard coupling coil 400. The third coil pin L3 and the fourth coil pin L4 have the function of synchronous enabling. If the reverse charging current is detected, the mainboard memory 500 is enabled to send the mainboard fault data.

[0039] The read / write enable pin WP2 of the mainboard memory 500 is connected to the ground pin GND and grounded at the same time, so that the read / write enable pin WP2 is enabled by default. The data pin SDA2 and the clock pin SCL2 of the mainboard memory 500 are connected to the external power supply through the sixth resistor R6 and the eighth resistor R8 respectively. At the same time, the data pin SDA2 of the mainboard memory 500 is connected to the corresponding data input / output port (I / O) port on the mainboard controller 600 through the fifth resistor R5, and the enable pin of the mainboard memory 500 is also connected to the corresponding port on the mainboard controller 600 through the seventh resistor R7. The working stability of the mainboard memory 500 is ensured by setting the fifth resistor R5, the sixth resistor R6, the seventh resistor R7 and the eighth resistor R8. When the third power pin VCC3 and the fourth power pin VCC4 of the mainboard memory 500 are both connected to the external power supply, that is, when the mainboard is not powered on to work, based on the principle of electromagnetic induction, the mainboard fault query device 10 provides a reverse charging current for the mainboard memory 500, so that the mainboard memory 500 outputs the stored mainboard fault data.

[0040] Similarly, the type of the detection memory 200 is not unique and is not limited to the EEROM chip in this embodiment, and can also be an EEPROM chip, etc. As long as it can be powered when the corresponding power pin is not powered, when the distance between the detection coupling coil 300 and the mainboard coupling coil 400 is less than or equal to the preset current value, the mainboard fault data stored can be output in the form of alternating current according to the reverse charging current generated by the mainboard coupling coil 400. It can be understood that in one embodiment, the mainboard controller 600 is also an MCU.

[0041] See also Figure 3 In one embodiment, the mainboard 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.

[0042] Specifically, a capacitor is provided between the third power input pin of the motherboard memory 500 and the external power supply, and the capacitor has an anti-interference function. One end of the second capacitor C2 is used to be connected to the external power supply, and the other end of the second capacitor C2 is grounded, so as to ensure that when powered on, the external power supply provides a stable power supply for the motherboard memory 500, and at the same time, the noise coupled to the power supply end by the motherboard memory 500 can also be reduced, which can indirectly reduce the influence of the noise of the motherboard memory 500 on other components, and further ensure the working stability of the motherboard memory 500.

[0043] In the above-mentioned motherboard fault query system, a detection controller 100, a detection memory 200 and a detection coupling coil 300 are provided in the motherboard fault query device 10. When a motherboard fault detection is required, the fault detection device is placed close to the motherboard so that the distance between the detection coupling coil 300 and the motherboard coupling coil 400 of the motherboard is less than or equal to the preset distance. After the detection controller 100 sends the detection data to the detection memory 200, the detection coupling coil 300 connected to the detection memory 200 can generate an alternating current, thereby causing the motherboard coupling coil 400 to oscillate. When the motherboard coupling coil 400 oscillates, a reverse charging current can be formed to charge the corresponding device on the motherboard, thereby sending the motherboard fault data stored in the motherboard in the form of current. Under the action of the current corresponding to the motherboard fault data, the motherboard coupling coil 400 oscillates with the detection coupling coil 300, thereby transmitting the motherboard fault data to the detection coupling coil 300, and then transmitting it to the detection memory 200 in the form of current, thereby realizing the query operation of the motherboard fault data. The above scheme provides a power-free motherboard fault query method, which does not require the motherboard to be powered on. The motherboard fault query device 10 only needs to be placed close to the motherboard to query and collect the motherboard fault data, which has the advantage of high operational convenience.

[0044] An air conditioning unit comprises the above-mentioned mainboard fault query system.

[0045] Specifically, the motherboard fault query system is as follows: Figure 3As shown, the above-mentioned mainboard fault query system is applied to the air-conditioning unit, and the corresponding mainboard is the mainboard of the air-conditioning unit. If the air-conditioning unit fails during operation, the corresponding fault information will be stored in the mainboard memory 500. The mainboard of the air-conditioning unit is provided with a mainboard coupling coil 400, a mainboard memory 500 and a mainboard controller 600. The mainboard memory 500 stores the historical fault data of the mainboard and the corresponding data for driving and controlling the operation of the unit. If a fault occurs during operation of the unit, the mainboard controller 600 will store the fault data in the mainboard memory 500 in real time, so that the latest mainboard fault data can be obtained in time when the mainboard fault query device 10 performs fault query. When the distance between the detection coupling coil 300 and the mainboard coupling coil 400 is less than or equal to the preset distance, the mainboard 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 sending it to the mainboard memory 500 connected to the mainboard coupling coil 400. The mainboard memory 500 is activated by the charging circuit, and the mainboard fault data stored in the mainboard memory 500 will be output to the mainboard coupling coil 400 in the form of alternating current. Under the action of the alternating current, oscillation occurs between the detection coupling coil 300 and the mainboard coupling coil 400. Based on the principle of electromagnetic induction, it can be known that the mainboard fault data will be transmitted to the detection memory 200 connected to the detection coupling coil 300, thereby completing the query operation of the mainboard fault data.

[0046] In the above-mentioned air-conditioning unit, the mainboard fault query device 10 is provided with a detection controller 100, a detection memory 200 and a detection coupling coil 300. When mainboard fault detection is required, the fault detection device is placed close to the mainboard so that the distance between the detection coupling coil 300 and the mainboard coupling coil 400 of the mainboard is less than the preset distance. After the detection controller 100 sends the detection data to the detection memory 200, the detection coupling coil 300 connected to the detection memory 200 can generate an alternating current, thereby causing the mainboard coupling coil 400 to oscillate. When the mainboard coupling coil 400 oscillates, a reverse charging current can be formed to charge the corresponding device on the mainboard, thereby sending the mainboard fault data stored in the mainboard in the form of current. Under the action of the current corresponding to the mainboard fault data, the mainboard coupling coil 400 oscillates with the detection coupling coil 300, thereby transmitting the mainboard fault data to the detection coupling coil 300, and then transmitting it to the detection memory 200 in the form of current, thereby realizing the query operation of the mainboard fault data. The above scheme provides a power-free motherboard fault query method, which does not require the motherboard to be powered on. The motherboard fault query device 10 only needs to be placed close to the motherboard to query and collect the motherboard fault data, which has the advantage of high operational convenience.

[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A motherboard fault query device, characterized in that: The device comprises: a detection controller, a detection memory and a detection coupling coil, wherein the detection controller is connected to the detection memory, the detection memory is connected to the detection coupling coil, and the detection coupling coil is used to couple with a mainboard coupling coil of a mainboard. The detection controller is used to send detection data to the detection memory, so that the detection coupling coil connected to the detection memory generates an alternating current; the detection coupling coil is used to make the mainboard coupling coil oscillate to generate a reverse charging current to power the mainboard when the distance between the detection coupling coil and the mainboard coupling coil is less than or equal to a preset distance; the detection coupling coil is also used to receive fault data sent by the mainboard in the form of oscillation, and send the fault data to the detection memory in the form of current; 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 to 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 to the detection controller, a read-write enable pin of the electrically erasable read-only memory chip is connected to a ground pin of the electrically erasable read-only memory chip and is grounded, and a first power pin of the electrically erasable read-only memory chip is connected to a second power pin of the electrically erasable read-only memory chip and is used to connect an external power supply.

2. The mainboard fault query device according to claim 1, characterized in that: It also 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 a 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 a 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.

3. The mainboard fault query device according to claim 2, characterized in that: It also includes a first capacitor, one end of which is connected to the first power pin, and the other end of which is grounded.

4. The mainboard fault query device according to any one of claims 1 to 3, characterized in that: The detection controller is a micro control unit controller.

5. A motherboard fault query system, characterized in that: The invention comprises a mainboard and the mainboard fault query device according to any one of claims 1 to 4, wherein the mainboard comprises a mainboard coupling coil, a mainboard memory and a mainboard controller, the mainboard coupling coil is connected to the mainboard memory, the mainboard memory is connected to the mainboard controller, The mainboard coupling coil is used to oscillate and generate a reverse charging current to power the mainboard memory when the distance between the detection coupling coil and the mainboard coupling coil is less than or equal to a preset distance, and to send the fault data sent by the mainboard memory to the detection coupling coil in the form of oscillation; the mainboard memory is used to store the fault data sent by the mainboard controller, and to send the fault data in the form of current to the mainboard coupling coil under the action of the reverse charging current.

6. The motherboard fault query system according to claim 5, characterized in that: The detection coupling coil and the mainboard coupling coil are coils with the same impedance characteristics and the same inductance.

7. The motherboard fault query system according to claim 5, characterized in that: The mainboard also includes a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor, one end of the fifth resistor is connected to the mainboard controller, the other end of the fifth resistor is connected to one end of the sixth resistor and a data pin of the mainboard memory, the other end of the sixth resistor is connected to a third power pin of the mainboard memory, one end of the seventh resistor is connected to the mainboard controller, the other end of the seventh resistor is connected to one end of the eighth resistor and a clock pin of the mainboard memory, the other end of the eighth resistor is connected to the third power pin of the mainboard memory, the read and write enable pin of the mainboard memory is connected to the ground terminal of the mainboard memory and is grounded, the third power pin of the mainboard memory is connected to the fourth power pin of the mainboard memory and is used to connect an external power supply, and the third coil pin of the mainboard memory and the fourth coil pin of the mainboard memory are respectively connected to the mainboard coupling coil.

8. The mainboard fault query system according to claim 7, characterized in that: The mainboard 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.

9. An air conditioning unit, characterized in that: It comprises the mainboard fault query system as described in any one of claims 5-8.

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