Control method and control device for alcohol detection device, and alcohol detection device

Abstract

The application provides a control method and device of an alcohol detection device and the alcohol detection device, relates to the technical field of alcohol detection, and the control method of the alcohol detection device comprises the following steps: using an alcohol absorption spectrum corresponding light source to emit a detection light signal with a light intensity corresponding to a set frequency and a set waveform at a detection point; acquiring light intensity time domain change information corresponding to the alcohol absorption spectrum of the detection point and infrared temperature information of the detection point by using infrared temperature measurement; performing frequency domain analysis on the light intensity time domain change information to generate light intensity time domain change and frequency domain change information in a preset wavelength range; and processing the light intensity time domain change, frequency domain change information and temperature time domain change information based on an alcohol concentration analysis algorithm to determine alcohol concentration time-frequency change information of the detection point. The application can realize non-contact rapid and accurate detection, and can improve the detection efficiency and accuracy of large-scale exhaled alcohol screening in public places.

Description

Technical Field

[0001] This application relates to the field of alcohol detection technology, and in particular to a control method, control device, and alcohol detection device for an alcohol detection device. Background Technology

[0002] Most alcohol control devices widely used on the market currently employ contact measurement methods, meaning the person being tested needs to blow directly into the device or touch it to complete the test. This method carries the risk of cross-infection, especially in public places, where hygiene issues are particularly prominent. Furthermore, contact testing is inefficient and cannot meet the needs of rapid screening for large populations. Summary of the Invention

[0003] The main objective of this invention is to provide a control method for an alcohol detection device, which aims to improve detection speed, reduce the risk of cross-contamination, and enhance user experience.

[0004] To achieve the above objectives, the present invention provides a control method for an alcohol detection device, the control method comprising:

[0005] Using a light source corresponding to the alcohol absorption spectrum, a detection light signal with a light intensity corresponding to a set frequency and a set waveform is emitted to the detection point;

[0006] The time-domain variation information of light intensity corresponding to the alcohol absorption spectrum at the detection point is obtained, and the time-domain variation information of temperature at the detection point is obtained by infrared thermometry.

[0007] The light intensity time-domain variation information is analyzed in the frequency domain to generate light intensity time-domain and frequency-domain variation information within a preset wavelength range;

[0008] Based on the alcohol concentration analysis algorithm, the time-domain change of light intensity, the frequency-domain change of light intensity, and the time-domain change of temperature are processed to determine the time-frequency change of alcohol concentration at the detection point.

[0009] Optionally, obtaining the time-domain change information of light intensity corresponding to the current absorption spectrum of the detection point specifically involves:

[0010] Multiple reflected light signals from the detection point are acquired in real time;

[0011] Generate time-domain variation information of absorption spectra corresponding to multiple reflected light signals, and analyze the time-domain variation information of light intensity corresponding to the absorption spectra.

[0012] Optionally, the step of performing frequency domain analysis on the light intensity time-domain variation information to generate light intensity frequency-domain time-domain variation and frequency-domain variation information within a preset wavelength range includes:

[0013] The light intensity time-domain variation information is analyzed in the frequency domain to extract the main frequency components in the light intensity time-domain variation information;

[0014] Based on the main frequency components, determine multiple light intensity frequency domain information within a preset wavelength range.

[0015] Optionally, the step of processing the time-domain change of light intensity, the frequency-domain change information, and the time-domain change of temperature based on the alcohol concentration analysis algorithm to determine the time-domain change information of alcohol concentration at the detection point includes:

[0016] Multiple light intensity time-domain changes, multiple light intensity frequency-domain changes, and infrared temperature measurement information are input into the alcohol concentration analysis algorithm, and the corresponding alcohol features and concentration features in the multiple light intensity time-domain and multiple light intensity frequency-domain are identified to determine the alcohol concentration information of the detection point.

[0017] Optionally, the preset wavelength range is 2000-3000 nanometers.

[0018] Optionally, if the detection point is a vehicle;

[0019] The specific steps for obtaining the time-domain change information of light intensity corresponding to the current absorption spectrum of the detection point are as follows:

[0020] The current absorption spectra of multiple locations in the vehicle cab are obtained, and the temporal variation information of the light intensity corresponding to the current absorption spectra of each location is analyzed.

[0021] The step of performing frequency domain analysis on the light intensity time-domain variation information to generate light intensity time-domain and frequency domain variation information within a preset wavelength range includes:

[0022] The light intensity time-domain variation information of each site is analyzed in the frequency domain to generate the light intensity time-domain and frequency domain variation information of each site at different wavelengths.

[0023] The process of processing the time-domain change of light intensity, the frequency-domain change information, and the time-domain change information of temperature based on the alcohol concentration analysis algorithm to determine the time-frequency change information of alcohol concentration at the detection point includes:

[0024] Determine the driver's position corresponding to the driver's driving position of the vehicle;

[0025] Based on the alcohol concentration analysis algorithm, the time-domain and frequency-domain changes in light intensity corresponding to the driver's position are processed to determine the alcohol concentration information of the detection point.

[0026] Optionally, the alcohol detection device includes an infrared light source and a corresponding light intensity / spectral sensor;

[0027] The control method further includes:

[0028] The infrared light source is controlled to emit a detection light signal with a light intensity corresponding to a set light frequency and a set waveform within a preset time.

[0029] The corresponding light intensity / spectral sensor is controlled to receive the light intensity signal reflected back from the detection point and to determine the absorption spectrum corresponding to the light intensity signal.

[0030] Optionally, the alcohol detection device includes an infrared temperature measurement component;

[0031] The control method further includes:

[0032] Obtain the current temperature data of the detection point acquired by the infrared temperature measurement component;

[0033] The time-domain variation information of light intensity is compensated based on the current temperature data.

[0034] In addition, to achieve the above objectives, the present invention also provides a control device, the control device comprising: a memory, a processor, and an alcohol monitoring program stored in the memory and executable on the processor, the alcohol monitoring program being configured to implement the control method of the alcohol detection device as described above.

[0035] In addition, to achieve the above objectives, the present invention also provides an alcohol detection device, including the control device described above.

[0036] This invention utilizes a light source corresponding to the alcohol absorption spectrum to emit a detection light signal with a light intensity corresponding to a set frequency and waveform at the detection point. It then acquires the time-domain variation information of light intensity and the time-domain variation information of temperature corresponding to the current absorption spectrum of the detection point. Next, it performs frequency domain analysis on the light intensity time-domain variation information to generate light intensity time-domain and frequency domain variation information within a preset wavelength range. Finally, it processes the light intensity time-domain variation information, frequency domain variation information, and the temperature time-domain variation information based on an alcohol concentration analysis algorithm to determine the time-frequency variation information of the alcohol concentration at the detection point. This achieves non-contact, rapid, and accurate detection, improving the detection efficiency and accuracy of large-scale breath alcohol screening in public places. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic flowchart of a control method for an alcohol detection device according to an embodiment of the present invention;

[0040] Figure 2 This is a schematic flowchart of a control method for an alcohol detection device according to another embodiment of the present invention;

[0041] Figure 3 This is a schematic flowchart of the control method of an alcohol detection device according to another embodiment of the present invention;

[0042] Figure 4 This is a schematic flowchart of the control method of an alcohol detection device according to another embodiment of the present invention;

[0043] Figure 5 This is a schematic flowchart of a control method for an alcohol detection device according to another embodiment of the present invention;

[0044] Figure 6 This is a schematic flowchart of a control method for an alcohol detection device according to another embodiment of the present invention;

[0045] Figure 7 This is a schematic diagram of the control method of an alcohol detection device according to another embodiment of the present invention.

[0046] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Well-known modules, units, and their connections, links, communications, or operations are not shown or described in detail. Furthermore, the described features, architectures, or functions can be combined in any way in one or more embodiments. Those skilled in the art should understand that the various embodiments described below are only for illustrative purposes and not for limiting the scope of protection of the present invention. It is also readily understood that the modules, units, or processing methods in the various embodiments described herein and shown in the accompanying drawings can be combined and designed in various different configurations. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] The definitions of various terms or methods used in the following embodiments are, except where logically impossible, generally defined as broad concepts that can be implemented under the premise of the content disclosed in the embodiments. Under this understanding, all specific subordinate limitations of the terms or methods should be considered as part of the invention and should not be narrowly interpreted or biased simply because the specification does not disclose such a specific limitation. Similarly, provided that it is logically feasible, the order of the steps in the method is flexible and varied, and all specific subordinate limitations in the broad concepts of various terms or methods fall within the scope of protection of this invention.

[0049] The main solution of this application embodiment is as follows: by using the light source corresponding to the alcohol absorption spectrum, a detection light signal with a light intensity corresponding to a set frequency and a set waveform is emitted to the detection point. Then, the time-domain change information of light intensity and the time-domain change information of temperature corresponding to the current absorption spectrum of the detection point are obtained. Then, the time-domain change information of light intensity is analyzed in the frequency domain to generate the time-domain change information of light intensity and the time-domain change information of frequency domain within a preset wavelength range. Finally, the time-domain change information of light intensity, the time-domain change information of frequency domain, and the time-domain change information of temperature are processed based on the alcohol concentration analysis algorithm to determine the time-frequency change information of alcohol concentration at the detection point.

[0050] In this embodiment, for ease of description, the following description will focus on the control device as the executing entity.

[0051] Most existing alcohol control devices use contact measurement methods, meaning the person being tested needs to blow directly into the device or touch it to complete the test. This method poses a risk of cross-infection, especially in public places, where hygiene issues are particularly prominent. Furthermore, contact testing is inefficient and cannot meet the needs of rapid screening for large populations.

[0052] This application provides a solution for achieving rapid and accurate non-contact detection, which can improve the detection efficiency and accuracy of large-scale breath alcohol screening in public places.

[0053] Therefore, the present invention proposes a control method for an alcohol detection device; it is understood that the alcohol detection device is equipped with a control device for storing and executing the following method. The control device can be implemented using a main controller, such as an MCU (Micro Controller Unit), a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), or a SOC (System On Chip).

[0054] It should be understood that the alcohol detection device used in this application is a non-contact alcohol detection device. The alcohol detection device includes a receiving sensor, wherein the receiving sensor is provided with multiple detection channels for detection, and each detection channel uses a filter of different wavelengths to filter out light of different wavelengths in order to obtain the time-domain change information of the light intensity of the corresponding wavelength.

[0055] Reference Figure 1 In one embodiment of the present invention, the control method of the alcohol detection device includes steps S100-S400, wherein:

[0056] S100: Using a light source corresponding to the alcohol absorption spectrum, a detection light signal with a light intensity corresponding to the set frequency and set waveform is emitted to the detection point.

[0057] S200: Obtain the time-domain change information of light intensity corresponding to the alcohol absorption spectrum at the detection point, and obtain the time-domain change information of temperature at the detection point using infrared thermometry.

[0058] S300: Perform frequency domain analysis on the light intensity time-domain change information to generate light intensity time-domain and frequency domain change information within a preset wavelength range;

[0059] S400: Based on the alcohol concentration analysis algorithm, process the time-domain and frequency-domain changes in light intensity and the time-domain changes in temperature to determine the time-frequency change information of alcohol concentration at the detection point.

[0060] The light source corresponding to the alcohol absorption spectrum can be an infrared light source.

[0061] In the control method of alcohol detection device, the absorption spectrum of a substance has several absorption peaks. Some absorption peaks may overlap. However, even if different substances have overlapping absorption peaks, their absorption ratios are not the same. If a substance has an absorption peak that no other substance has, the concentration of the substance can be obtained by using the light source of that wavelength to penetrate the substance and the change in the light time domain. However, if the absorption peaks overlap, it is necessary to detect multiple absorption peaks to distinguish the substance and even estimate the concentration.

[0062] By equipping each detection channel with a different filter, information on the temporal variation of light intensity of multiple absorption peaks of alcohol and its metabolites can be obtained, thereby achieving the special effect of detecting the concentration of alcohol and its metabolites and distinguishing them from impurities such as water vapor.

[0063] The time-domain variation information of light intensity can include the attenuation curve of light intensity over time, the attenuation rate of light intensity at different wavelengths, and the attenuation magnitude of light intensity at a specific wavelength. By analyzing the corresponding light intensity attenuation information, the alcohol concentration can be analyzed more accurately, and the trend of alcohol concentration can be determined by comparing the light intensity attenuation at different time points.

[0064] By performing frequency domain analysis on the temporal variation of light intensity, frequency domain information of light intensity within a preset wavelength range is generated, which helps to more accurately identify and quantify alcohol concentration. Optionally, the preset wavelength range is 2000-3000 nanometers to improve detection accuracy. Through frequency domain analysis, the unique absorption peak frequency of alcohol can be identified, thus enabling accurate detection of alcohol concentration even in the presence of overlapping absorption by multiple substances.

[0065] This embodiment obtains the light intensity time-domain change information corresponding to the current absorption spectrum of the detection point, then performs frequency domain analysis on the light intensity time-domain change information to generate light intensity time-domain and frequency domain change information within a preset wavelength range. Finally, it processes the light intensity time-domain and frequency domain change information based on an alcohol concentration analysis algorithm to determine the alcohol concentration information of the detection point, thereby achieving non-contact, rapid and accurate detection, which can improve the detection efficiency of large-scale screening in public places.

[0066] Optionally, refer to Figure 2 Another embodiment of the present invention provides a control method for an alcohol detection device, based on the above. Figure 1 The embodiment shown includes steps S210-S220 for obtaining the time-domain change information of light intensity corresponding to the current absorption spectrum of the detection point, wherein:

[0067] S210. Real-time acquisition of the reflected light signal from the detection point;

[0068] S220. Generate absorption spectrum time-domain variation information corresponding to the multiple reflected light signals, and analyze the light intensity time-domain variation information corresponding to the absorption spectrum.

[0069] In this embodiment, the reflected light signal refers to the light intensity value reflected back from the detection point. By analyzing the time-domain variation information of the absorption spectrum corresponding to the reflected light signal, the absorption characteristics of the substance can be determined more accurately, thereby improving the accuracy of alcohol concentration detection.

[0070] By generating absorption spectra corresponding to multiple light intensity data and analyzing the time-domain variation information of the light intensity corresponding to the absorption spectra, the reliability of the detection results can be better ensured. For example, frequency domain analysis can be performed on the reflected light intensity data to identify the absorption peak frequency of a specific substance, which can more comprehensively determine the absorption characteristics of the detected substance, thereby more accurately detecting alcohol and its corresponding concentration. This can effectively reduce false alarms and false negatives, and improve the accuracy and efficiency of detection.

[0071] Optionally, refer to Figure 3 Another embodiment of the present invention provides a control method for an alcohol detection device, based on the above. Figure 1The embodiment shown includes steps S310-S320, which involve performing frequency domain analysis on the light intensity time-domain variation information to generate light intensity time-domain and frequency domain variation information within a preset wavelength range, wherein:

[0072] S310. Perform frequency domain analysis on the light intensity time-domain variation information to extract the main frequency components in the light intensity time-domain variation information;

[0073] S320. Based on the main frequency components, determine multiple light intensity frequency domain information within a preset wavelength range.

[0074] In this embodiment, frequency domain analysis can be achieved through methods including, but not limited to, Fourier transform and wavelet transform. The main frequency components in the time-domain variation information of light intensity can include the characteristic frequency components of alcohol concentration. By identifying these characteristic frequency components of alcohol concentration, the alcohol concentration can be analyzed more accurately while eliminating interference from other substances. For example, the absorption peak frequency of alcohol at a specific wavelength differs from the absorption peak frequencies of water vapor or other impurities. By extracting these characteristic frequency components, alcohol can be effectively distinguished from other substances, thereby improving the accuracy of detection. The light intensity frequency domain information determined based on the main frequency components consists of multiple light intensity frequency domain variation characteristics related to alcohol concentration.

[0075] Optionally, refer to Figure 4 Another embodiment of the present invention provides a control method for an alcohol detection device, based on the above. Figure 1 The embodiment shown, based on the alcohol concentration analysis algorithm, processes the time-domain and frequency-domain variation information of light intensity and the time-domain variation information of temperature to determine the time-domain variation information of alcohol concentration at the detection point, including step S410, wherein:

[0076] S410. Input multiple light intensity time-domain changes, multiple light intensity frequency-domain changes, and infrared temperature information into the alcohol concentration analysis algorithm, and identify the corresponding alcohol features and concentration features in the multiple light intensity time-domain and multiple light intensity frequency-domain to determine the alcohol concentration information of the detection point.

[0077] In this embodiment, the alcohol concentration analysis algorithm may include, but is not limited to, convolutional neural networks (CNN), recurrent neural networks (RNN), or long short-term memory networks (LSTM). By training the above-mentioned alcohol concentration analysis algorithm, the control device can learn the complex patterns and correlations in the time-domain and frequency-domain changes in light intensity, thereby accurately predicting the alcohol concentration. In actual use, by inputting multiple light intensity time-domain and multiple light intensity frequency-domain data into the alcohol concentration analysis algorithm, real-time monitoring and analysis of the alcohol concentration at the detection point can be achieved.

[0078] It should be understood that the control method of the alcohol detection device provided in this embodiment is used to detect vehicles; therefore, the detection point can be a vehicle.

[0079] Optionally, refer to Figure 5 The present invention also provides a control method for an alcohol detection device, based on the above. Figure 1 In the embodiment shown, obtaining the time-domain change information of light intensity corresponding to the current absorption spectrum of the detection point includes step S230, wherein:

[0080] S230. Obtain the current absorption spectrum of multiple locations in the vehicle cab and analyze the time-domain change information of light intensity corresponding to the current absorption spectrum of each location.

[0081] The step of performing frequency domain analysis on the light intensity time-domain variation information to generate light intensity time-domain and frequency domain variation information within a preset wavelength range includes step S330, wherein:

[0082] S330. Perform frequency domain analysis on the light intensity time-domain variation information of each site to generate light intensity time-domain and frequency domain variation information of each site at different wavelengths.

[0083] The process of processing the time-domain and frequency-domain changes in light intensity and the time-domain changes in temperature based on the alcohol concentration analysis algorithm to determine the time-frequency change information of the alcohol concentration at the detection point includes steps S420-S430, wherein:

[0084] S420. Determine the driver's position corresponding to the driver's driving position of the vehicle;

[0085] S430. Based on the alcohol concentration analysis algorithm, process the light intensity time-domain change and light intensity frequency-domain change information corresponding to the driver's position to determine the alcohol concentration information of the detection point.

[0086] In this embodiment, by accurately locating the driver's position, the accuracy of the detection results can be ensured, because the driver's position is usually closest to the driver's breathing area, thus reflecting the driver's blood alcohol concentration level more directly.

[0087] The alcohol detection device can be held by the testing personnel, installed on fixed traffic monitoring facilities, or mounted by the testing personnel on a bracket at mobile testing points. It emits an infrared light source towards the vehicle's driver's cab, thereby achieving non-contact detection of the vehicle's interior environment.

[0088] It is important to understand that alcohol detection devices include an infrared light source and a corresponding light intensity / spectral sensor.

[0089] Optionally, refer to Figure 6Another embodiment of the present invention provides a control method for an alcohol detection device, based on the above. Figure 1 In the embodiment shown, the control method further includes steps S500-S600, wherein:

[0090] S500: Control the infrared light source to emit a detection light signal with a light intensity corresponding to a set light frequency and a set waveform within a preset time.

[0091] S600: Control the corresponding light intensity / spectral sensor to receive the light intensity signal reflected back from the detection point, and determine the absorption spectrum corresponding to the light intensity signal.

[0092] In this embodiment, an infrared laser tube / LED can be used as the detection light source. The light intensity can be selected to be constant or periodically changed. This periodically changed light intensity signal can be a sine wave or a square wave, etc. The light source illuminates the driver's seat and is reflected onto the detector. Alternatively, the light source and detector can be arranged on the left and right sides of the vehicle, respectively, and on the rearview mirror. After multiple reflections, the detection is performed. The infrared laser tube / LED light source can provide light sources of all wavelengths that can pass through the multi-channel detector at the same time with a small size, which is conducive to the integration and preparation of integrated light sources with more uniform light fields and higher detection performance.

[0093] The process of a driver exhaling air containing alcohol and alcohol metabolites is a complex physiological process related to human breathing frequency and metabolism. The corresponding absorption spectrum obtained by using periodically input light intensity signals contains information in both the time and frequency domains, which can provide richer information for subsequent algorithms, thereby making the detection more accurate.

[0094] By receiving the light intensity signal reflected from the detection point using a corresponding light intensity / spectral sensor and determining the absorption spectrum corresponding to that signal, the sensitivity and reliability of the detection can be greatly improved. Furthermore, by controlling the periodic changes in the light intensity signal emitted by the infrared laser source, dynamic monitoring of the detection point can be achieved, thereby capturing dynamic information about the change in alcohol concentration over time. This dynamic monitoring is of great significance for determining whether a driver is under the influence of alcohol and the degree of intoxication.

[0095] Among them, the corresponding light intensity / spectral sensor will receive multiple light intensity signals reflected back from the detection point, thereby increasing the detection optical path and improving the detection sensitivity.

[0096] Infrared light sources can be used to collect signals by setting up composite lamps of different wavelengths or by setting up gratings in light intensity / spectral sensors, thereby determining the absorption spectrum corresponding to the light intensity signal.

[0097] It is important to understand that alcohol detection devices include infrared temperature measurement components.

[0098] Optionally, refer to Figure 7 Another embodiment of the present invention provides a control method for an alcohol detection device, based on the above. Figure 1 The embodiment shown further includes steps S700-S800, wherein:

[0099] S700: Obtain the current temperature data of the detection point acquired by the infrared temperature measurement component;

[0100] S800, compensate for the time-domain variation information of light intensity based on the current temperature data.

[0101] In this embodiment, the current temperature data may include the ambient temperature of the detection point and the driver's body temperature. By compensating for the temperature data, the light intensity detection error caused by temperature changes can be corrected, thereby improving the detection accuracy.

[0102] It's important to understand that temperature variations can affect sensor sensitivity, leading to inaccurate detection results. For example, at higher temperatures, the sensor may be more sensitive, potentially resulting in overly high readings; conversely, at lower temperatures, the sensor's response may be weaker, leading to understated readings. Temperature also affects air density and flow. Under different temperature conditions, alcohol molecules diffuse at different rates in the air, which can affect the concentration of alcohol detected by the detector, thus influencing the final detection result.

[0103] Therefore, during alcohol testing, real-time monitoring and compensation for temperature changes can ensure the accuracy and consistency of test results. Furthermore, the temperature compensation mechanism helps the control device adapt to different environmental conditions, especially when traffic enforcement officers use it to detect drivers' alcohol levels on the road, ensuring that the test results are not affected by fluctuations in external ambient temperature.

[0104] The present invention also proposes a control device, the control device comprising: a memory, a processor, and an alcohol monitoring program stored in the memory and executable on the processor, the alcohol monitoring program being configured to implement the control method of the alcohol detection device as described above.

[0105] It is worth noting that since the control device of the present invention is based on the control method of the alcohol detection device described above, the embodiments of the control device of the present invention include all the technical solutions of all embodiments of the control method of the alcohol detection device described above, and the technical effects achieved are exactly the same, so they will not be repeated here.

[0106] The present invention also proposes an alcohol detection device, which includes a control device as described in the above embodiments.

[0107] It is worth noting that since the alcohol detection device of the present invention is based on the control device described above, the embodiments of the alcohol detection device of the present invention include all the technical solutions of all the embodiments of the control device described above, and the technical effects achieved are exactly the same, so they will not be repeated here.

[0108] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0109] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0110] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0111] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A control method of an alcohol detection device, characterized by, The control method comprises: using an alcohol absorption spectrum corresponding to a light source, a detection point emits a detection light signal corresponding to a set frequency and a set waveform; obtaining the light intensity time domain variation information corresponding to the alcohol absorption spectrum of the detection point and the temperature time domain variation information of the detection point obtained by infrared temperature measurement; the light intensity time domain variation information is analyzed in the frequency domain to generate the light intensity time domain variation and the frequency domain variation information in the preset wavelength range; based on the alcohol concentration analysis algorithm, the light intensity time domain variation, the frequency domain variation information and the temperature time domain variation information are processed to determine the alcohol concentration time-frequency variation information of the detection point; the light intensity time domain variation information corresponding to the alcohol absorption spectrum of the detection point is specifically obtained as follows: real-time acquisition of multiple reflected light signals reflected by the detection point; generate the absorption spectrum time domain variation information corresponding to the multiple reflected light signals, and analyze the light intensity time domain variation information corresponding to the absorption spectrum; the light intensity time domain variation information is analyzed in the frequency domain to generate the light intensity time domain variation and the frequency domain variation information in the preset wavelength range; the light intensity time domain variation information is analyzed in the frequency domain to extract the main frequency component in the light intensity time domain variation information; determine the multiple light intensity frequency domain information in the preset wavelength range according to the main frequency component; the light intensity time domain variation, the multiple light intensity frequency domain variation information and the infrared temperature measurement information are input into the alcohol concentration analysis algorithm, and the corresponding alcohol characteristics and concentration characteristics in the multiple light intensity time domain and the multiple light intensity frequency domain are identified to determine the alcohol concentration information of the detection point. The preset wavelength range is 2000-3000 nanometers.

2. The control method of the alcohol detection apparatus according to claim 1, characterized by, If the detection point is a vehicle; 3. The control method of the alcohol detection apparatus according to claim 1, characterized by, the light intensity time domain variation information corresponding to the alcohol absorption spectrum of the detection point is specifically obtained as follows: obtain the alcohol absorption spectrum of multiple sites in the vehicle cab, and analyze the light intensity time domain variation information corresponding to the alcohol absorption spectrum of each site; the light intensity time domain variation information of each site is analyzed in the frequency domain to generate the light intensity time domain and frequency domain variation information of each site under different wavelengths; the light intensity time domain variation, the multiple light intensity frequency domain variation information and the infrared temperature measurement information are input into the alcohol concentration analysis algorithm, and the corresponding alcohol characteristics and concentration characteristics in the multiple light intensity time domain and the multiple light intensity frequency domain are identified to determine the alcohol concentration information of the detection point. determine the main driving site corresponding to the main driving position of the vehicle; based on the alcohol concentration analysis algorithm, the light intensity time domain variation, the light intensity frequency domain variation information and the temperature time domain variation information corresponding to the main driving site are processed to determine the alcohol concentration information of the detection point. The alcohol detection device comprises an infrared light source and a corresponding light intensity / spectrum sensor; the control method further comprises:

4. The control method of the alcohol detection apparatus according to any one of claims 1 to 3, characterized by, controlling the infrared light source to emit a detection light signal corresponding to a set light frequency and a set waveform in a preset time; ​ ​ The control device controls the corresponding light intensity / spectrum sensor to receive the light intensity signal reflected from the detection point and determine the absorption spectrum corresponding to the light intensity signal.

5. The control method of the alcohol detection apparatus according to any one of claims 1 to 3, characterized by, The alcohol detection device comprises an infrared temperature measurement component; The control method further comprises: acquiring current temperature data of the detection point acquired by the infrared temperature measurement component; compensating the light intensity time domain variation information according to the current temperature data.

6. A control device characterized by comprising: The control device comprises a memory, a processor, and an alcohol monitoring program stored in the memory and executable on the processor, and the alcohol monitoring program is configured to implement the control method of the alcohol detection device according to any one of claims 1 to 5.

7. An alcohol detection device, characterized by, The control device according to claim 6. The control device according to claim 6.

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