Carbon tank oil content detection method and related equipment

Abstract

The invention relates to a carbon tank oil content detection method and related equipment, and the method comprises the steps: obtaining a millimeter wave test signal, and transmitting the millimeter wave test signal to a to-be-detected carbon tank; obtaining a target millimeter wave signal obtained after the millimeter wave test signal passes through the carbon tank to be tested; obtaining a target voltage value based on the target millimeter wave signal; and obtaining the oil content condition in the carbon tank to be detected based on the target voltage value. The problem that the accuracy of detecting the oil content in the automobile carbon tank by infrared rays is low due to the fact that the infrared rays are weak in penetrating power and cannot penetrate through the automobile carbon tank is solved.

Description

Background Art

[0002] Gasoline is a volatile fuel. The fuel in the tank will evaporate quickly and increase the pressure inside the tank. When the pressure reaches a certain value, it will cause certain dangers. So people want to balance the pressure. At first, the tank cap was made into a pressure limiting valve. When the pressure is higher than a certain value, the pressure limiting valve opens and discharges the gasoline vapor into the atmosphere. In order to improve the utilization rate of gasoline, a carbon canister filled with activated carbon is installed between the gasoline tank and the engine of the car. After the engine of the car is turned off, the gasoline vapor and fresh air are mixed in the canister and stored in the carbon canister. When the engine is started, the electromagnetic valve of the fuel evaporation purification device installed between the carbon canister and the intake manifold opens, and the gasoline vapor in the carbon canister is sucked into the intake manifold to participate in combustion, so as to achieve the purpose of saving fuel and environmental protection. When the carbon canister is working normally, there is generally oil stored inside the carbon canister. If there is no oil stored, it means that the carbon canister is not working properly. At this time, the gasoline utilization rate of the car becomes low, resulting in a waste of gasoline resources. Therefore, it is necessary to monitor the oil content of the carbon canister.

[0003] At present, the most common oil content detection technology on the market is to use infrared spectrophotometry for detection, and the detection object is generally a solution. Due to the different characteristics of different oils, the absorption of infrared rays is also different. The infrared spectrum oil content analyzer is used to emit infrared rays to the solution to be tested, and the absorption of infrared rays is obtained, so as to calculate the oil content of the solution to be tested.

[0004] However, infrared rays are electromagnetic waves with a wavelength of 0.78um to 300um, and have weak penetrating power. They cannot penetrate the car carbon canister, resulting in low accuracy in infrared detection of oil content inside the car carbon canister. Summary of the invention

[0005] In order to overcome the problem that infrared rays have weak penetrating power and cannot penetrate the automobile carbon canister, resulting in low accuracy in infrared detection of the oil content inside the automobile carbon canister, the present application provides a carbon canister oil content detection method and related equipment.

[0006] In the first aspect, in order to solve the above technical problems, the present application provides a method for detecting oil content in a carbon canister, comprising:

[0007] Acquire a millimeter wave test signal, and transmit the millimeter wave test signal to the carbon canister to be tested;

[0008] Obtain a target millimeter wave signal obtained after the millimeter wave test signal passes through the carbon canister to be tested;

[0009] Obtaining a target voltage value based on the target millimeter wave signal;

[0010] The oil content in the carbon canister to be tested is obtained based on the target voltage value.

[0011] In a second aspect, the present application further provides an oil content detection device for a carbon canister, the oil content detection device for a carbon canister comprising a detection structure and a carbon canister connected to each other, for implementing an oil content detection method for a carbon canister.

[0012] In a third aspect, the present application also provides an oil content detection system for a carbon canister, comprising:

[0013] A transmitting module, used for acquiring a millimeter wave test signal and transmitting the millimeter wave test signal to the carbon canister to be tested;

[0014] An acquisition module, used for acquiring a target millimeter wave signal obtained after the millimeter wave test signal passes through the carbon canister to be tested;

[0015] A first obtaining module is used to obtain a target voltage value based on a target millimeter wave signal;

[0016] The second obtaining module is used to obtain the oil content in the carbon canister to be tested based on the target voltage value.

[0017] In a fourth aspect, the present application further provides a computing device, including a memory, a processor, and a program stored in the memory and running on the processor, and when the processor executes the program, the steps of a method for detecting oil content in a carbon canister as provided in the present application are implemented.

[0018] In a fifth aspect, the present application also provides a computer-readable storage medium, in which instructions are stored. When the instructions are executed on a terminal device, the terminal device executes the steps of a method for detecting oil content in a carbon canister.

[0019] The beneficial effect of the present application is: a target voltage value is obtained by obtaining a target millimeter wave signal after the millimeter wave test signal passes through the carbon canister to be tested, and the oil content in the carbon canister to be tested is obtained based on the target voltage value. Since millimeter waves have strong penetrating power and can pass through solids, compared with infrared oil content detection technology, the present application can detect the oil content in the carbon canister to be tested using millimeter wave test signals, and the accuracy of the oil content detected is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic flow chart of a method for detecting oil content in a carbon canister according to an exemplary embodiment of the present application;

[0021] Figure 2 This is a schematic structural diagram of an oil content detection device for a carbon canister used in an oil content detection method for a carbon canister in an exemplary embodiment of the present application;

[0022] Figure 3 The schematic diagram of the structure of an oil content detection system for a carbon canister is shown as an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0023] The following examples are provided to further explain and supplement the present application and do not constitute any limitation to the present application.

[0024] The following describes an oil content detection method for a carbon canister and related equipment according to an embodiment of the present application in conjunction with the accompanying drawings.

[0025] An embodiment of the present application provides a method for detecting oil content in a carbon canister, the method being applied to a terminal device. In the present application scheme, the terminal device is used as the execution subject to illustrate the present application scheme, and the terminal device is used to execute the steps of a method for detecting oil content in a carbon canister.

[0026] See also Figure 1 , Figure 1 A method for detecting oil content in a carbon canister is shown as an exemplary embodiment of the present application. Figure 1 As shown, the present application provides a method for detecting oil content in a carbon canister, comprising:

[0027] Step S11, obtaining a millimeter wave test signal, and transmitting the millimeter wave test signal to the carbon canister to be tested;

[0028] Step S12, obtaining a target millimeter wave signal obtained after the millimeter wave test signal passes through the carbon canister to be tested;

[0029] Step S13, obtaining a target voltage value based on the target millimeter wave signal;

[0030] Step S14, obtaining the oil content in the carbon canister to be tested based on the target voltage value.

[0031] In the present embodiment, a method for detecting oil content in a carbon canister is provided. A target voltage value is obtained by obtaining a target millimeter wave signal after a millimeter wave test signal passes through the carbon canister to be tested, and the oil content in the carbon canister to be tested is obtained based on the target voltage value. Since millimeter waves have strong penetrating power and can pass through solids, compared with infrared oil content detection technology, the present embodiment can detect the oil content in the carbon canister to be tested using millimeter wave test signals, and the accuracy of the oil content detected is higher.

[0032] Optionally, obtaining a millimeter wave test signal and transmitting the millimeter wave test signal to the carbon canister to be tested includes:

[0033] Acquire an initial millimeter wave signal;

[0034] Performing frequency synthesis processing on the initial millimeter wave signal to obtain a millimeter wave test signal, and transmitting the millimeter wave test signal to the carbon canister to be tested;

[0035] Among them, the frequency synthesis processing includes filtering processing, amplification processing and frequency doubling processing.

[0036] In this embodiment, the initial millimeter wave signal is generated and output by a phase-locked loop. Since the phase-locked loop generates a spurious signal at the same time when generating the initial millimeter wave signal, and the output power of the phase-locked loop is relatively small, there is an interference signal in the initial millimeter wave signal, and its frequency, power and stability may not necessarily meet the subsequent detection requirements. Therefore, this embodiment performs frequency synthesis processing on the initial millimeter wave signal, eliminates the spurious signal therein, adjusts the frequency and power of the initial millimeter wave signal, and enhances the stability of the signal, so that the millimeter wave test signal obtained by the frequency synthesis processing has less interference information, and the frequency, power and stability can meet the subsequent detection requirements, thereby improving the accuracy of the oil content obtained by subsequent detection.

[0037] In some embodiments of the present application, frequency synthesis processing is performed on the initial millimeter wave signal to obtain a millimeter wave test signal, including:

[0038] Performing filtering processing on the initial millimeter wave signal to obtain a first processed signal to filter out some spurious signals in the initial millimeter wave signal;

[0039] amplifying and frequency-multiplying the first processed signal to obtain a second processed signal, so as to increase the power and frequency of the first processed signal;

[0040] Performing filtering processing on the second processed signal to obtain a third processed signal, so as to filter out part of the stray signals in the second processed signal;

[0041] The third processed signal is amplified to obtain a millimeter wave test signal, so as to increase the power of the third processed signal so that the millimeter wave test signal can meet subsequent detection requirements.

[0042] Optionally, obtaining a target millimeter wave signal obtained after the millimeter wave test signal passes through the carbon canister to be tested includes:

[0043] Obtain a loss signal formed after the millimeter wave test signal passes through the carbon canister to be tested;

[0044] Perform signal processing on the loss signal to obtain a target millimeter wave signal corresponding to the millimeter wave test signal;

[0045] Among them, signal processing includes method processing and filtering processing.

[0046] In this embodiment, there may be stray signals in the loss signal formed after the millimeter wave test signal passes through the carbon canister to be tested, and the frequency and power of the loss signal are too small, and the stability is also poor. In this embodiment, the loss signal is processed to eliminate the stray signals, adjust the frequency and power of the loss signal, facilitate the subsequent signal conversion, and enhance the stability of the signal. In this way, the target millimeter wave signal obtained after signal processing has less interference information, and the frequency, power and stability can meet the subsequent voltage conversion requirements, further improving the accuracy of the oil content obtained by subsequent detection.

[0047] In some embodiments of the present application, signal processing is performed on the loss signal to obtain a target millimeter wave signal corresponding to the millimeter wave test signal, including:

[0048] amplifying the loss signal to obtain a fourth signal to increase the power of the loss signal;

[0049] Performing filtering on the fourth signal to obtain a fifth signal, so as to filter out some stray signals in the fourth signal;

[0050] The fifth signal is amplified to obtain a target millimeter wave signal corresponding to the millimeter wave test signal, so as to increase the power of the fifth processed signal so that the target millimeter wave signal can meet subsequent voltage conversion requirements.

[0051] Optionally, obtaining a target voltage value based on the target millimeter wave signal includes:

[0052] Obtaining the input power of the power detector when receiving the target millimeter wave signal;

[0053] Convert input power to target voltage value.

[0054] In this embodiment, the power detector directly converts the input power when receiving the target millimeter wave signal into a target voltage value. Compared with manual calculation, this embodiment directly receives the target millimeter wave signal and outputs the target voltage value through the power detector, thereby improving the efficiency of signal processing, and further improving the efficiency of detecting the oil content in the carbon canister to be tested.

[0055] In this embodiment, the corresponding relationship between the input power and the output level of the power detector obtained through testing is shown in Table 1. The output level is a target voltage value converted from the input power.

[0056] Table 1

[0057] Input power / dBm Output level / V -45.1 0.05 -43.4 0.1 -41.7 0.15 -40.4 0.2 -38.3 0.25 -36.7 0.3 -35.0 0.35 -33.3 0.4 -31.6 0.45 -29.8 0.5 -27.9 0.55 -26.1 0.6 -24.4 0.65 -22.5 0.7 -20.6 0.75 -18.8 0.8 -16.7 0.85 -14.8 0.9 -12.5 0.95 -9.0 1

[0058] Optionally, the oil content in the carbon canister to be tested is obtained based on the target voltage value, including:

[0059] Get the material category of the carbon canister to be tested;

[0060] Find the voltage threshold corresponding to the material category in the preset voltage threshold table;

[0061] Based on the target voltage value and the voltage threshold, the oil content in the carbon canister to be tested is determined.

[0062] In this embodiment, since the dielectric constants of carbon canisters made of different materials are different, the target millimeter wave signals obtained by the same millimeter wave test signal passing through carbon canisters made of different materials are different, and the corresponding target voltage values ​​are also different. Therefore, the judgment conditions for determining whether oil is present in carbon canisters made of different materials are also different. In this embodiment, the corresponding voltage threshold is found in the preset voltage threshold table according to the material type of the carbon canister to be tested. The voltage threshold that matches the carbon canister to be tested and the target voltage value obtained after passing through the carbon canister to be tested can be used to determine the oil content in the carbon canister to be tested. This can improve the targeted detection of the carbon canister to be tested and further improve the accuracy of the test results.

[0063] In this embodiment, the voltage threshold is the target voltage value obtained by converting the input power obtained after the millimeter wave test signal passes through the carbon canister to be tested that only contains air, and the pressure of the air is equal to the pressure of the environment in which the carbon canister to be tested is located. It is only necessary to measure in advance the voltage value obtained by converting the input power obtained after the millimeter wave test signal passes through the carbon canister that only contains air, and use this voltage value as the voltage threshold of the carbon canister to be tested. Then, each time the oil content in the carbon canister needs to be detected, the voltage threshold can be directly used for comparison, without the need to detect the voltage threshold every time, thereby improving the efficiency of detection.

[0064] Optionally, based on the target voltage value and the voltage threshold, determining the oil content in the carbon canister to be tested includes:

[0065] When the target voltage value is less than the voltage threshold, it is determined that the oil content in the carbon canister to be tested is that oil content exists;

[0066] When the target voltage value is greater than or equal to the voltage threshold, it is determined that the oil content in the carbon canister to be tested is that no oil content exists.

[0067] In this embodiment, when the target voltage value is less than the voltage threshold, it means that the loss of the millimeter wave test signal when passing through the carbon canister to be tested is greater than the loss of passing through the carbon canister containing only air. At this time, there is oil in the carbon canister to be tested, and it is determined that the oil content in the carbon canister to be tested is that there is oil;

[0068] When the target voltage value is greater than or equal to the voltage threshold, it means that the loss of the millimeter wave test signal when passing through the carbon canister to be tested is less than or equal to the loss of passing through the carbon canister containing only air. At this time, there is only air less than or equal to the ambient pressure inside the carbon canister to be tested, or the interior of the carbon canister to be tested is in a vacuum state, and the oil content in the carbon canister to be tested is determined to be non-existent. In this way, each time the oil content in the carbon canister to be tested needs to be tested, the loss of the millimeter wave test signal when passing through the carbon canister to be tested can be understood based on the size between the target voltage value and the voltage threshold of the carbon canister to be tested. Based on the loss, the oil content in the carbon canister to be tested can be reflected, thereby improving the accuracy of the test results.

[0069] See also Figure 2 , Figure 2 In an exemplary embodiment of the present application, a carbon canister oil detection device for a carbon canister oil detection method is provided, such as Figure 2 As shown, the oil content detection device of the carbon canister includes a detection structure and a carbon canister connected to each other, which is used to implement a method for detecting the oil content of a carbon canister provided in the present application. Among them, the detection structure includes a radio frequency part, a single-chip microcomputer and a display screen. The radio frequency part is provided with a transmitting module and a receiving module. The radio frequency part is designed using a microwave chip, which has the advantages of small overall volume and high integration. The transmitting module is connected to an antenna A through a cable, and the receiving module is connected to an antenna B through a cable. Antenna A and antenna B are symmetrically arranged on both sides of the carbon canister to be tested, and antenna A and antenna B are spaced a set distance from the carbon canister to be tested; the radio frequency part is connected to the single-chip microcomputer through a cable, and the single-chip microcomputer is connected to the display screen through a cable, and a detection button is arranged on the display screen.

[0070] When the oil content detection device of the carbon canister is used, after clicking the detection button set on the display screen, the single-chip microcomputer is controlled by a pre-written program to operate the register inside the phase-locked loop, so that the transmitting module uses the quartz crystal oscillator 100MHz as the phase-locked loop input reference signal, and controls the phase-locked loop in the transmitting module to generate an initial millimeter wave signal with a frequency of 8.75GHz and a power of -10dBm; secondly, the initial millimeter wave signal is filtered by the first filter in the transmitting module to obtain a first processed signal to filter out some stray signals in the initial millimeter wave signal; thirdly, the first amplifier and the active fourth-order frequency multiplier in the transmitting module are used to amplify and quadruple the first processed signal to increase the power of the first processed signal to 10dBm and increase the frequency of the first processed signal. Increase to 35GHz, and obtain a second processed signal with a power of 10dBm and a frequency of 35GHz; then, since the first processed signal is amplified and quadrupled, the spurious signal in the first processed signal is also amplified and quadrupled, and the second filter in the transmitting module is used to filter the second processed signal to obtain a third processed signal to filter out some of the spurious signals in the second processed signal; finally, since the power of the third processed signal is reduced after filtering, the second amplifier in the transmitting module is used to amplify the third processed signal to increase the power of the third processed signal to 20dBm, and obtain a millimeter wave test signal with a power of 20dBm and a frequency of 35GHz, so that the millimeter wave test signal can meet subsequent detection requirements. Among them, the wavelength of the millimeter wave test signal is 8mm. The transmitting module transmits the millimeter wave test signal obtained by the second amplifier to the carbon canister to be tested through antenna A.

[0071] The receiving module first receives the loss signal formed after the millimeter-wave test signal passes through the carbon canister to be tested through antenna B. Since the loss signal is affected by the loss of the cable between the sending module and antenna A, the transmission distance loss between antenna A and antenna B, the loss of the carbon canister to be tested, and the loss of the cable between antenna B and the receiving module, the power of the received loss signal is -47dBm, and the frequency of the loss signal is still 35GHz; secondly, the loss signal is amplified by the third amplifier in the receiving module to obtain the fourth signal to increase the power of the loss signal; thirdly, the fourth signal is filtered by the third filter in the receiving module to obtain the fifth signal to filter out some stray signals in the fourth signal; then, the fifth signal is amplified by the fourth amplifier in the receiving module to obtain the target millimeter-wave signal corresponding to the millimeter-wave test signal to increase the power of the fifth processed signal so that the target millimeter-wave signal can meet the subsequent voltage conversion requirements; finally, the power detector in the receiving module is used to receive the target millimeter-wave signal, and the input power of the power detector when receiving the target millimeter-wave signal is obtained, and the power detector converts the input power into a target voltage value. The receiving module sends the target voltage value output by the power detector to the microcontroller.

[0072] The single chip microcomputer determines the corresponding voltage threshold based on the material type of the carbon canister to be tested, and determines the oil content in the carbon canister to be tested based on the target voltage value and the voltage threshold, and sends the oil content to the display screen for display.

[0073] In some embodiments of the present application, the oil content detection device based on the carbon canister uses a millimeter wave test signal to detect pure air, an empty carbon canister, and an oil carbon canister. Among them, after the millimeter wave test signal is sent out, the loss after passing through the cable, antenna A, pure air, antenna B, and cable in sequence is -20dBm. At this time, the power of the loss signal is -30dBm, then the input power of the power detector when receiving the signal is -17dBm, and the voltage value of the converted output is 0.82V. After the millimeter wave test signal is sent out, the loss after passing through the cable, antenna A, an empty carbon canister, antenna B, and cable in sequence is -27dBm. At this time, the power of the loss signal is -37dBm, then the input power of the power detector when receiving the signal is -24dBm, and the voltage value of the converted output is 0.63V. After the millimeter wave test signal is sent out, the loss after passing through the cable, antenna A, oil carbon canister, antenna B, and cable in sequence is -37dBm, and the power of the loss signal is -47dBm. At this time, the input power of the power detector when receiving the signal is -35.3dBm, and the converted output voltage value is 0.35V. In order to increase the data difference and increase the detection accuracy, an operational amplifier is added to the detector level output end with an amplification factor of 5 times. When detecting pure air, the voltage value output by the power detector is 4.12V, when detecting an empty carbon canister, the voltage value output by the power detector is 3.15V, and when detecting an oil carbon canister, the voltage value output by the power detector is 1.73V. It can be seen that there are obvious differences in the target voltage values ​​obtained by detecting pure air, empty carbon canister, and oil carbon canister respectively, and the amplified voltage data makes it easier to make clear judgments on the three test conditions.

[0074] The oil content detection device of the carbon canister used in the oil content detection method of the carbon canister of the present application has a simple overall structure, small component size, high integration, and the overall volume of the device is light and compact, so it can be carried and used at any time to meet the requirements of various work scenarios. In addition, the device uses antenna technology to ensure low transmission loss between signals and improve detection accuracy. At the same time, the oil content detection method of the carbon canister of the present application uses millimeter wave test signals to detect the oil content in the carbon canister to be tested. Since the millimeter wave signal has a narrow beam and high resolution, it can distinguish smaller targets that are closer or observe the details of the target more clearly. Therefore, the measurement accuracy of the detection of the automobile carbon canister using the millimeter wave test signal is high, and the accuracy of the oil content in the carbon canister detected can meet the requirements. The device and method of the present application are used to detect the oil content in the carbon canister, and the user does not need to have relevant professional knowledge and skills and experience. The processing and conversion of detailed data in the detection process are directly performed by the device combined with the solution, and the output display results are easy to understand.

[0075] See also Figure 3 , Figure 3 An exemplary embodiment of the present application shows an oil detection system for a carbon canister, such as Figure 3As shown, the present application provides an oil content detection system for a carbon canister, comprising:

[0076] A transmitting module, used for acquiring a millimeter wave test signal and transmitting the millimeter wave test signal to the carbon canister to be tested;

[0077] An acquisition module, used for acquiring a target millimeter wave signal obtained after the millimeter wave test signal passes through the carbon canister to be tested;

[0078] A first obtaining module is used to obtain a target voltage value based on a target millimeter wave signal;

[0079] The second obtaining module is used to obtain the oil content in the carbon canister to be tested based on the target voltage value.

[0080] In this embodiment, the acquired millimeter wave test signal is transmitted to the carbon canister to be tested through the transmitting module, the target millimeter wave signal obtained after the millimeter wave test signal passes through the carbon canister to be tested is obtained by the acquiring module, and the target voltage value is obtained based on the target millimeter wave signal by the first acquiring module, and the oil content in the carbon canister to be tested is obtained based on the target voltage value by the second acquiring module. Since the millimeter wave has a strong penetrating ability and can pass through solids, compared with the infrared oil content detection technology, this embodiment can detect the oil content in the carbon canister to be tested using the millimeter wave test signal, and the accuracy of the detected oil content is higher.

[0081] Optionally, the transmitting module is specifically used for:

[0082] Acquire an initial millimeter wave signal;

[0083] The initial millimeter wave signal is subjected to frequency synthesis processing to obtain a millimeter wave test signal, and the millimeter wave test signal is transmitted to the carbon canister to be tested.

[0084] Optionally, obtain a module, specifically for:

[0085] Obtain a loss signal formed after the millimeter wave test signal passes through the carbon canister to be tested;

[0086] The loss signal is processed to obtain a target millimeter wave signal corresponding to the millimeter wave test signal.

[0087] Optionally, the first module is specifically used to:

[0088] Obtaining the input power of the power detector when receiving the target millimeter wave signal;

[0089] Convert input power to target voltage value.

[0090] Optionally, the second obtaining module is specifically used for:

[0091] Get the material category of the carbon canister to be tested;

[0092] Find the voltage threshold corresponding to the material category in the preset voltage threshold table;

[0093] Based on the target voltage value and the voltage threshold, the oil content in the carbon canister to be tested is determined.

[0094] Optionally, the second obtaining module is specifically used for:

[0095] When the target voltage value is less than the voltage threshold, it is determined that the oil content in the carbon canister to be tested is that oil content exists;

[0096] When the target voltage value is greater than or equal to the voltage threshold, it is determined that the oil content in the carbon canister to be tested is that no oil content exists.

[0097] A computing device according to an embodiment of the present application includes a memory, a processor, and a program stored in the memory and running on the processor. When the processor executes the program, some or all steps of a carbon canister oil content detection method provided in the present application are implemented.

[0098] Among them, the computing device can be a computer, and correspondingly, its program is computer software. The above-mentioned parameters and steps in a computing device of the present application can refer to the parameters and steps in an embodiment of an oil content detection method for a carbon canister provided in the present application, and will not be repeated here.

[0099] In an embodiment of the present application, a computer-readable storage medium is provided, in which instructions are stored. When the instructions are executed, the steps of a method for detecting oil content in a carbon canister provided in the present application are executed.

[0100] The computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0101] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method of the embodiment of the present disclosure. The aforementioned computer-readable storage medium may be a non-transitory computer-readable storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, and other media that can store program codes, or a transient computer-readable storage medium.

[0102] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0103] Those skilled in the art know that the present application can be implemented as a system, method or computer program product. Therefore, the present disclosure can be specifically implemented in the following forms, namely: it can be complete hardware, it can be complete software (including firmware, resident software, microcode, etc.), or it can be a combination of hardware and software, generally referred to as "module" or "system" herein. In addition, in some embodiments, the present application can also be implemented in the form of a computer program product in one or more computer-readable media, and the computer-readable medium contains computer-readable program code. Computer-readable storage media can be, for example, but not limited to - electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or devices, or any combination of the above.

[0104] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, material categories or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, material categories or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0105] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for detecting oil content in a carbon canister, characterized in that: include: Acquire a millimeter wave test signal, and transmit the millimeter wave test signal to the carbon canister to be tested; Acquire a target millimeter wave signal obtained after the millimeter wave test signal passes through the carbon canister to be tested; Obtaining a target voltage value based on the target millimeter wave signal; The oil content in the carbon canister to be tested is obtained based on the target voltage value.

2. The method according to claim 1, characterized in that The obtaining of the millimeter wave test signal and transmitting the millimeter wave test signal to the carbon canister to be tested includes: Acquire an initial millimeter wave signal; The initial millimeter wave signal is subjected to frequency synthesis processing to obtain a millimeter wave test signal, and the millimeter wave test signal is transmitted to the carbon canister to be tested.

3. The method according to claim 1, characterized in that The step of obtaining a target millimeter wave signal obtained after the millimeter wave test signal passes through the carbon canister to be tested includes: Acquire a loss signal formed after the millimeter wave test signal passes through the carbon canister to be tested; The loss signal is processed to obtain a target millimeter wave signal corresponding to the millimeter wave test signal.

4. The method according to claim 1, characterized in that: The obtaining a target voltage value based on the target millimeter wave signal includes: Acquire the input power of the power detector when receiving the target millimeter wave signal; The input power is converted into a target voltage value.

5. The method according to any one of claims 1 to 4, characterized in that: The step of obtaining the oil content in the carbon canister to be tested based on the target voltage value includes: Obtaining the material category of the carbon canister to be tested; Finding the voltage threshold corresponding to the material category in a preset voltage threshold table; Based on the target voltage value and the voltage threshold, the oil content in the carbon canister to be tested is determined.

6. The method according to claim 5, characterized in that The step of determining the oil content in the carbon canister to be tested based on the target voltage value and the voltage threshold value includes: When the target voltage value is less than the voltage threshold, determining that the oil content in the carbon canister to be tested is that oil content exists; When the target voltage value is greater than or equal to the voltage threshold, it is determined that the oil content in the carbon canister to be tested is that no oil content exists.

7. An oil content detection device for a carbon canister, characterized in that: The oil content detection device for a carbon canister comprises a detection structure and a carbon canister connected to each other, and is used to implement the oil content detection method for a carbon canister as claimed in any one of claims 1 to 6.

8. An oil content detection system for a carbon canister, characterized in that: include: A transmitting module, used for acquiring a millimeter wave test signal and transmitting the millimeter wave test signal to the carbon canister to be tested; An acquisition module, used for acquiring a target millimeter wave signal obtained after the millimeter wave test signal passes through the carbon canister to be tested; A first obtaining module, configured to obtain a target voltage value based on the target millimeter wave signal; The second obtaining module is used to obtain the oil content in the carbon canister to be tested based on the target voltage value.

9. A computing device comprising a memory, a processor, and a program stored in the memory and running on the processor, characterized in that: When the processor executes the program, the steps of the method for detecting oil content in a carbon canister as described in any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and when the instructions are executed on a terminal device, the terminal device executes the steps of a method for detecting oil content in a carbon canister as claimed in any one of claims 1 to 6.

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