TWI784377B - Respiration sensing system and method with identity recognition function - Google Patents

Abstract

The present invention is a breath sensing system and method with identity recognition function, comprising a breath detection device equipped with a display, when the breath detection device detects the concentration of the substance, the breath detection information is generated and displayed on the display to provide an imaging device Align the display of the breathing detection device with the face of the user, and capture the sensing image and send it to the processing device. The sensing image includes the display image and the user's face image, so that the processing device recognizes breathing detection information according to the display image of the sensing image, and recognizes user identity information of the user according to the sensing image. The present invention recognizes the breath detection information from the display image, which can reduce the error caused by signal interference, and at the same time confirm that the user is actually performing the detection, avoiding the situation of substituting the detection.

Description

Respiration sensing system and method with identity recognition function

The invention relates to a gas measurement technology, in particular to a breath sensing system and method with identity recognition function.

According to statistics, drunk driving is currently the number one cause of car accidents. In order to ensure the safety of passers-by, all countries implement the law of not driving after drinking. In addition to generally not driving under the influence of alcohol, trucks or public transportation systems are large in size and have a large number of passengers, which greatly affects traffic safety. Before the driver of the transportation system drives the car, the driver will be required to take an alcohol test, and the driver must pass the alcohol test before driving the vehicle.

The general alcohol test test process is that the manager monitors the subject, and after the driver blows the breath on the alcohol tester to measure, the manager checks the alcohol test value displayed on the alcohol tester to judge the driver's alcohol test. Whether the value complies with the specification. However, this method is too labor-intensive. Therefore, some companies currently use the method of automatic detection of alcohol test values for alcohol testing. The automatic alcohol testing system can be installed on the driver's seat, allowing the driver to input fingerprints into the automatic alcohol testing system. After confirming the identity of the driver, the driver is asked to perform an alcohol test on the breath of the alcohol tester.

However, at present, the automatic alcohol test system of the fleet is set up separately from the process of identifying the identity and performing the alcohol test. When the automatic alcohol test system performs the alcohol test, it first confirms the identity of the driver, and then the driver blows on the alcohol tester to perform the alcohol test. Confirmation of the alcohol test value, so some unscrupulous drivers are likely to enter their identity first, and then ask other people to breathe out on their behalf to perform the alcohol test value test. As a result, it becomes meaningless to require drivers to take a drink test before driving.

In view of this, the present invention proposes a breath sensing system and method with identity recognition function to effectively overcome the above-mentioned problems.

The main purpose of the present invention is to provide a breath sensing system and method with identity recognition function, which can confirm that the user has indeed exhaled on the breath detection device, and directly use the image to judge the breath detection information displayed by the breath detection device, which can avoid During signal transmission, errors or unavailability due to signal interference can improve the stability of information.

Another object of the present invention is to provide a breath sensing system and method with identity recognition function, which can input the subject's identity and breath detection information at the same time during the detection, so as to ensure the identity of the breath detection information and avoid proxy testing When the situation occurs, and when there is a problem in the detection, a warning can be issued together to remind the subject to avoid driving.

Another object of the present invention is to provide a breath sensing system and method with identity recognition function, all of its information can be integrated and stored in the cloud server for data analysis, which can effectively evaluate the drivers of commercial vehicles, Eliminate recidivist drivers who often drink and drive to improve driving safety.

In order to achieve at least one of the above-mentioned purposes, the present invention provides a breathing sensing system, which is suitable for detecting the concentration of substances exhaled by a user. The breathing sensing system includes a breathing detection device, which includes a display, and when breathing When the detection device detects the concentration of the substance, it generates breath detection information and displays it on the display. The imaging range of an imaging device includes the display of the breathing detection device and the user's face, and the imaging device can capture a sensing image, including the display image of the display of the breathing detection device and the user's face . The processing device is connected to the image capturing device to receive the sensing image, and the processing device recognizes the breathing detection information according to the display image of the sensing image, and recognizes a user identity information of the user according to the sensing image.

In this embodiment, the processing device can determine whether the substance concentration exceeds the standard concentration value based on the breath detection information, and when the standard concentration value is exceeded, the processing device generates a warning signal.

In this embodiment, the display is a light emitting element or a display screen.

In this embodiment, the display can display breath concentration data information or coded barcodes.

In this embodiment, the breathing detection device further includes a communication unit connected to the processing device, and the communication unit transmits the breathing detection information to the processing device, which can be compared with the detection information recognized from the sensing image.

In this embodiment, the breath detection device is an alcohol test device.

In this embodiment, the breathing sensing system further includes a database connected to the processing device, the database has a default user identity information, and the processing device retrieves the default user identity information in the database to compare the user Whether the identity information matches the default user identity information.

In this embodiment, the database can further store breathing detection information and user identity information.

In this embodiment, the processing device and the database can be in the car or a remote server.

In this embodiment, the breathing sensing system further includes a vehicle-mounted device connected to a processing device, which can receive warning signals and issue warnings according to the warning signals.

In this embodiment, after the display displays the breathing detection information (for example, one second), the display is immediately turned off to prevent others from blowing on behalf of others before handing over to the user for image recognition.

In this embodiment, when the monitor displays breathing detection information, the imaging device captures the sensing image synchronously.

In addition, the present invention also provides a breath sensing system suitable for detecting the concentration of a substance exhaled by a user. The breath sensing system includes a breath detection device, an imaging device and a processing device. The breath detection device includes a detection unit, a display and a communication unit. When the detection unit detects the concentration of the substance, it generates breath detection information. The display shows device identification information of the breathing detection device. The imaging range of the imaging device includes the display of the breathing detection device and the user's face, so as to capture a sensing image. The processing device is connected to the imaging device and the communication unit to receive sensing images and breathing detection information. The processing device recognizes the device identification information and user identity information of the user according to the sensing image.

In addition, the present invention also provides a breath sensing method, which is suitable for a breath detection device, the breath detection device is used to detect the concentration of a substance exhaled by a user, and the breath detection device includes a display, wherein the breath detection method The steps include, when the breath detection device detects the concentration of the substance, generating breath detection information for display on the display. A sensing image is captured, the imaging range of which includes the display of the breathing detection device and the user's face, wherein the sensing image includes the display image. Respiratory detection information is recognized according to the display image of the sensing image, and user identity information of the user is recognized according to the sensing image.

In this embodiment, before the step of identifying the breathing detection information based on the display image of the sensing image, it may be determined whether the breathing detection information can be identified from the display image of the sensing image, or whether the user can be identified from the sensing image Facial image, when the processing device fails to recognize breathing detection information or user's facial image based on the sensing image, a warning signal is generated.

In this embodiment, the display is turned off immediately after displaying the breath detection information (for example, one second).

In this embodiment, when the monitor displays the breathing detection information, the sensing image is captured synchronously.

Moreover, the present invention further provides a breath sensing method, which is suitable for a breath detection device. The breath detection device is used to detect a substance concentration exhaled by a user, and the breath detection device includes a detection unit, a display and a communication unit. The display shows device identification information of the breathing detection device. The breath sensing method includes the following steps. When the detection unit detects the concentration of the substance, it generates breath detection information. A sensing image is captured, and the imaging range includes the display and the user's face. The breath detection information is received from the communication unit, and the device identification information and user identity information of the user are identified according to the sensing image.

In the following detailed description by means of specific embodiments, it will be easier to understand the purpose, technical content, characteristics and effects of the present invention.

The present invention is a breath sensing system and method with identity recognition function, which is suitable for detecting the concentration of substances exhaled by a user, such as detecting the concentration of alcohol in the exhaled breath of a user. More importantly, the present invention can confirm that the user has indeed exhaled on the breath detection device, and directly uses the image to judge the breath detection information displayed by the breath detection device, which can avoid errors or unusability due to signal interference during signal transmission, and can Improve the accuracy of information and product stability. The present invention can simultaneously input the identity of the subject and breath detection information during the detection, which can ensure the identity of the exhaled breath detection information, avoid the occurrence of proxy testing, and when there is a problem with the detection, a warning can be issued to remind the subject Driving should be avoided. At the same time, all the information can be integrated and stored in the cloud server for data analysis, which can effectively evaluate the drivers of commercial vehicles, eliminate recidivist drivers who often drink and drive, and improve driving safety.

Next, the system architecture of the present invention is described to illustrate how to achieve the above effects through the system architecture of the present invention. First, please refer to the first and second figures, the present invention proposes a breath sensing system 1 suitable for detecting the concentration of substances exhaled by the user. The breath sensing system 1 is installed on the vehicle to detect the gas exhaled The concentration of alcohol contained in the breath, that is, the breath sensing system 1 can provide alcohol testing.

The structure of the breath sensing system 1 includes a breath detection device 10 , an imaging device 20 , a processing device 30 , a vehicle-mounted device 40 , a time unit 50 and a positioning unit 60 . In this embodiment, the breathing detection device 10, the imaging device 20, the vehicle-mounted device 40, the time unit 50 and the positioning unit 60 can be provided in the vehicle, and the processing device 30 can be installed in the vehicle or a cloud server to receive and The information provided by the breathing detection device 10 , the imaging device 20 , the vehicle-mounted device 40 , the time unit 50 and the positioning unit 60 is stored.

As shown in the first figure, the breath detection device 10 of this embodiment can be an alcohol detection device, which is provided for users such as drivers to hold and blow into their mouths to detect the concentration of alcohol in the user's exhaled air. It should be noted that, in another unillustrated embodiment, those skilled in the art can apply the breath detection device 10 to other breath detections such as medical treatment, not limited to the detection of alcohol concentration.

Please refer to the first figure and the second figure together. In this embodiment, the breathing detection device 10 includes a display 12 , a communication unit 14 and a detection unit 16 . The detection unit 16 is connected to the display 12 and the communication unit 14 . When the detection unit 16 of the breath detection device 10 detects the substance concentration of alcohol, it can generate breath detection information to be displayed on the display 12. When the display 12 finishes displaying the breath detection information, the display 12 is turned off immediately, such as turning off the display 12 after one second. . The display 12 of the breathing detection device 10 can be a display screen or a light emitting element. When the display 12 is a display screen, when the display 12 detects the substance concentration of alcohol and generates breath detection information, the display 12 can provide data directly displaying the breath concentration data information, or present the breath concentration data information in a coded barcode manner, Such as a quick response matrix code (Quick Response Code, QR Code). However, when the user exhales the breathing detection device 10, but the exhalation volume is not enough, so that the breathing detection device 10 fails to detect the concentration of the substance, other error information can be displayed on the display 12 in real time for the user to interpret. , or provide an image of the error information displayed on the display 12 through the image capturing device 20 to the processing device 30 for interpretation.

When the display 12 is a light-emitting element, the light-emitting element can be a multicolor light-emitting diode. When the breathing detection device 10 detects that the concentration of alcohol is lower than 0.15 mg, the light-emitting element displays green light. When the substance concentration of alcohol is greater than or equal to 0.15 mg, the light-emitting element displays red light. If the breathing detection device 10 does not detect the concentration of the substance, or does not receive any information, the light emitting element displays yellow light.

In this embodiment, the processing device 30 may also include a communication unit 34 and a processor 36 . The communication unit 14 of the breathing detection device 10 can be connected to the communication unit 34 of the processing device 30 in a wired or wireless manner. Through the connection between the communication unit 14 and the communication unit 34 , the breath detection information detected by the breath detection device 10 can be transmitted to the processor 36 of the processing device 30 for comparison with the detection information recognized from the sensing image.

The imaging device 20 can be connected to the processing device 30 in a wireless or wired manner. The imaging device 20 can be a camera. The imaging device 20 generates a sensing image according to the imaging range. The timing of the imaging is that when the display 12 displays the breathing detection information, the imaging device 20 captures the sensing image synchronously. As shown in the first figure, in this embodiment, the imaging device 20 is installed in front of the driver's seat, so that the imaging range of the imaging device 20 includes the display 12 of the breathing detection device 10 and the position of the driver's seat. Since the image capturing device 20 captures the display 12 of the breathing detection device 10 , the sensing image can include the display image. When the user is sitting in the driver's seat, the imaging device 20 can provide a photograph of the user's face, that is, the sensing image includes generating an image of the user's face, but if there is no one in the driver's seat, the imaging device 20 cannot capture the image. Of course, the user's facial image cannot be included in the sensing image. At this time, the processor 36 of the processing device 30 can also be connected to the communication unit 14 through the communication unit 34 to transmit an image error information to the breath detection device 10, so that the display 12 of the breath detection device 10 displays the error information, or the processing device 30 transmits an error message. The image error information is sent to the vehicle-mounted device 40, and the vehicle-mounted device 40 directly displays the error information or generates a warning signal. In this way, the user can be reminded to move to a position where the imaging device 20 can correctly capture the face through the error information and warning signal displayed by the vehicle-mounted device 40 or the breathing detection device 10 .

It is worth mentioning that after the processor 36 of the processing device 30 receives the sensing image, it can directly use image recognition to judge the breathing detection information displayed on the display 12 of the breathing detection device 10 and the identity of the user, so as to avoid The problem of unstable transmission signal may be encountered between the communication units 14 and 34 . Therefore, although in the above-mentioned embodiment, the breathing detection device 10 and the processing device 30 are provided with the communication units 14, 34 respectively, in another unshown embodiment, the communication units 14, 34 can also be omitted, and this does not mean limit.

As shown in the second figure, the time unit 50 and the positioning unit 60 are connected to the processing device 30. The time unit 50 can generate time information, and the positioning unit 60 can generate positioning information. The time information and positioning information can be transmitted to the processing device together with the sensing image. In the device 30 and stored in the database 32, information such as sensing images, time information, and location information can be used for data collection and subsequent analysis.

Please continue to refer to the first and second figures, the processing device 30 can be a device in the car or a cloud server, and the processing device 30 can be connected to a database 32 for storing information. The processing device 30 can receive the sensing image generated by the imaging device 20, and the sensing image is provided to the processing device 30 to determine whether the breathing detection information can be recognized from the display 12 of the sensing image, and whether the user's face can be recognized from the sensing image However, when the processing device 30 cannot recognize the breathing detection information or the user's facial image according to the display image, a warning signal is generated to the vehicle-mounted device 40 . In another unillustrated embodiment, the breathing detection device 10 may also be provided with an independent warning unit, such as a buzzer or a warning light. The warning unit is connected to the processing device 30 to receive and directly emit a warning sound or a warning light according to the warning signal. In addition, warning signals and test results can also be directly sent to a manager's mobile phone or a central management system (not shown) through the communication unit 14 of the breathing detection device 10 or the communication unit 34 of the processing device 30, so as to notify the management in real time. Those who are processed are not limited to this.

Further, the sensing image providing processing device 30 determines whether the technical means for recognizing the breath detection information from the display 12 of the sensing image is as follows. Breath detection information will not be displayed, or a yellow light will be displayed. Therefore, when the display 12 does not display the breathing detection information, or displays a yellow light, the processing device 30 cannot recognize the breathing detection information from the display image of the sensing image. But when the breath detection device 10 detects the concentration of the substance, the display 12 can provide and display the direct breath concentration data information, coding barcode, green light or red light, and the processing device 30 can judge the breath detection information accordingly. The preferred embodiment is to display the coded barcode on the display 12, and the processing device 30 can read the breath detection information according to the coded barcode. Using the coded barcode can prevent the user from forging the breath detection information, thereby changing the breath concentration data information.

In addition, in another not-shown embodiment, the display 12 may not display the breathing detection information, and the breathing detection information is directly transmitted to the processing device 30 through the communication unit 14 . In this embodiment, the display 12 is only used to statically or dynamically display device identification information of the breath detection device 10 , so as to confirm which breath detection device 10 the user is exhaling by sensing an image. A detailed implementation is that the imaging device 20 captures a sensing image, wherein the imaging range of the sensing image includes the display 12 of the breathing detection device 10 and the user's face. After the image capturing device 20 captures the sensing image, it transmits the sensing image to the processing device 30, so that the processor 36 of the processing device 30 recognizes the device identification information according to the sensing image, and recognizes a user's face according to the user's face. User ID information. In this way, the processing device 30 has received the breath detection information through the communication unit 14 of the breath detection device 10, and at the same time, the processing device 30 can determine the user's identity information and the device identification information of the breath detection device 10, so as to prevent other users from breathing on behalf of others. The problem of the detection device 10 can also avoid the problem that the user pretends to detect with other breath detection devices 10 within the imaging range, but in fact other people blow on behalf of the breathing outside the imaging range. Device identification information can also be coded with barcodes to present statically or dynamically, such as quick response matrix codes. For example, the display 12 can be a static quick-response matrix code sticker, or it can also dynamically generate a coded barcode in real time to further avoid the problem of counterfeiting.

The definition of whether the processor 36 of the processing device 30 judges whether the user's facial image is recognized from the sensing image is that when the user appears in the imaging range of the imaging device 20, the imaging device 20 can provide a photograph of the user, That is, the sensing image includes generating the user's facial image, and at this time, the processor 36 of the processing device 30 can recognize the user's image from the sensing image. But when the user does not appear in the imaging range of the imaging device 20, the imaging device 20 of course cannot capture the user's face, and of course the sensing image cannot include the user's facial image. The processor 36 of the processing device 30 cannot recognize the image of the user from the sensing image. Wherein, after the processor 36 of the above-mentioned processing device 30 judges the breathing detection information or the user's face image, it can be stored in the database 32 for subsequent judgment or data analysis.

Through the judgment of the above-mentioned processing device 30, if there is only breathing detection information in the sensing image but no user's face image, it means that the user does not exist within the imaging range of the imaging device 20, and it cannot be determined that the user is facing the breathing detection device. 10 blowing air, thinking that there is doubt in this detection, so the processing device 30 generates a warning signal to the vehicle-mounted device 40 . Or when the processing device 30 judges that there is only the user's face image in the sensing image, but there is no breathing detection information, it means that the user may not have blown air on the breathing detection device 10, which makes this detection doubtful. 30 also generates a warning signal to the vehicle-mounted device 40 .

The processing device 30 can further determine whether the substance concentration exceeds the standard concentration value based on the breath detection information, and generate a warning signal when the substance concentration exceeds the standard concentration value. For example, when the display 12 is a screen, the displayed information can be respiratory concentration data information or coded barcodes. At this time, the processing device 30 judges the data of the breath detection information through the breath concentration data information or coded barcodes. When the breath detection information When the data exceeds the standard concentration value, that is, greater than or equal to 0.15 mg, the processing device 30 will generate a warning signal to the vehicle-mounted device 40 .

When the display 12 is a light emitting element, when the substance concentration of alcohol is greater than or equal to 0.15 mg, the light emitting element displays red light. At this time, the processing device 30 judges that the display 12 displays red light through the received sensing image, and the processing device 30 judges that the concentration exceeds the standard value, and the processing device 30 also generates a warning signal to the vehicle-mounted device 40 . Through the above actions, it is determined that the user has exceeded the drink-driving standard, and the processing device 30 generates a warning signal to the vehicle-mounted device 40, and the vehicle-mounted device 40 reminds the user not to drive.

In addition, the processing device 30 can be used to determine the identity of the user. Specifically, the database 32 connected to the processing device 30 stores default user identity information. The processing device 30 can use facial image recognition technology to identify the user identity information from the user's face image, and then the processing device 30 retrieves the default user identity information from the database 32 to compare the user identity Information and user identity default information, when the user identity information is different from the default user identity information, it means that there is doubt about the currently detected user identity, and the processing device 30 generates a warning signal to the vehicle-mounted device 40 to avoid fraudulent use identity.

The respiration detection information and user identity identified by the processing device 30, as well as the sensing image, time information and positioning information received by the processing device 30 can all be stored in the database 32 for data collection and subsequent data analyze.

In addition, the processing device 30 can also recognize the user's facial muscles and mouth shape changes based on the user's facial image, and judge the user's exhalation state, so as to confirm whether the user is exhaling, and assist in judging whether the user is exhaling. It is indeed blown to detect.

Please refer to the second figure, the vehicle-mounted device 40 can be an auxiliary driving system, which is installed in the vehicle and connected to the processing device 30. The vehicle-mounted device 40 can be provided with a light-emitting unit, a screen or a sound unit (not shown). When the vehicle-mounted device 40 receives the warning signal generated by the processing device 30, the light-emitting unit, screen or sound unit of the vehicle-mounted device 40 can emit flashes of different colors, image warnings or sound warnings according to the warning signal to remind the user that the detection status is abnormal. question. In addition, after receiving the warning signal, the vehicle-mounted device 40 can also lock the steering wheel or accelerator of the vehicle to prevent the user from driving, so as to further ensure the safety of passers-by.

The steps applied by the above breath sensing system 1 are described as follows. Please refer to the first picture to the third picture. First enter step S10, when the breath detection device 10 detects the concentration of the substance, generate a breath detection information to be displayed on the display 12, when the display 12 finishes displaying the breath detection information, turn off the display 12 immediately, for example, turn off the display 12 after one second . Then enter step S12, the imaging device 20 immediately captures a sensing image when the display 12 displays the breathing detection information, and the imaging range includes the display 12 of the breathing detection device 10 and the user, wherein the sensing image includes the display image. Then enter step S14, the imaging device 20 transmits the sensing image to the processing device 30, so that the processing device 30 first judges whether the breathing detection information can be recognized from the display image of the sensing image, or whether the user's face can be recognized from the sensing image video. If not, when the processing device 30 cannot recognize the breathing detection information or the user's facial image according to the sensing image, it proceeds to step S18 to generate a warning signal. But if it is, when the processing device 30 can judge the breathing detection information and the user's face image, then enter step S16, the processing device 30 recognizes the breathing detection information according to the display image of the sensing image, and recognizes the user according to the sensing image A user ID for . Of course, the processing device 30 can further judge the substance concentration of the breathing detection information, and generate a warning signal when the substance concentration exceeds a standard concentration value.

In summary, the present invention can confirm that the user has indeed exhaled on the breath detection device, and directly uses the image to judge the breath detection information displayed by the breath detection device during detection, which can avoid errors or failures due to signal interference during signal transmission. Using it can improve the accuracy and stability of information. In addition, the present invention can simultaneously input the identity of the subject and the breath detection information during the detection to ensure the identity of the exhaled breath detection information and avoid the occurrence of proxy testing. At the same time, a warning can be issued to remind the subject to avoid driving, and the above All information can be integrated and stored in the cloud server for data analysis. When applied to commercial vehicles, it can effectively evaluate drivers, eliminate recidivist drivers who often drink and drive, and improve driving safety.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all equivalent changes or modifications based on the features and spirit described in the scope of the application of the present invention shall be included in the scope of the patent application of the present invention.

1: Respiration sensing system 10: Respiratory detection device 12: Display 14: Communication unit 16: Detection unit 20: Imaging device 30: Processing device 32: Database 34: Communication unit 36: Processor 40: Vehicle-mounted device 50: time unit 60: Positioning unit

The first figure is a schematic view of the use state of the breath sensing system according to an embodiment of the present invention. The second figure is a system block diagram of the breathing sensing system in the first figure. The third figure is a flowchart of the steps of the breathing sensing method according to an embodiment of the present invention.

1: Respiration sensing system

10: Respiratory detection device

12: Display

14: Communication unit

16: Detection unit

20: Imaging device

30: Processing device

32: Database

34: Communication unit

36: Processor

40: Vehicle-mounted device

50: time unit

60: Positioning unit

Claims (16)

A breath sensing system, which is suitable for detecting the concentration of a substance exhaled by a user, the breath sensing system includes: a breath detection device, including a display and a detection unit, when the detection unit detects the substance concentration, generate a breathing detection information to be displayed on the display, wherein the display displays a device identification information of the breathing detection device; an imaging device, the imaging range of which includes the display of the breathing detection device and the user's face, to capture a sensing image, which includes a display image; and a processing device, connected to the image capturing device, to receive the sensing image, and the processing device recognizes the sensing image according to the display image of the sensing image breathing detection information and the device identification information, and identify a user identity information of the user according to the sensing image; wherein, when the display displays the breathing detection information, the imaging device captures the sensing image synchronously . The breath sensing system as described in Claim 1, wherein the processing device determines whether the concentration of the substance exceeds a standard concentration value based on the breath detection information, and when the standard concentration value is exceeded, the processing device generates a warning signal. The breathing sensing system as described in claim 2 further includes a vehicle-mounted device connected to the processing device, which receives the warning signal generated by the processing device and sends out a warning according to the warning signal. The breathing sensing system according to claim 1, wherein the display is a light emitting element or a display screen. The breath sensing system as described in Claim 1, wherein the display displays breath concentration data information or coded barcodes. The breath sensing system according to claim 1, wherein the breath detection device is an alcohol test device. The breathing sensing system as described in claim 1 further includes a database connected to the processing device, the database has default user identity information, and the processing device retrieves the default user identity information in the database , to compare whether the user identity information matches the default user identity information. The respiration sensing system as described in claim 7, wherein the database stores the respiration detection information and the user identity information. The breathing sensing system as claimed in claim 1, wherein the processing device is an in-vehicle device or a remote server. The breathing sensing system as described in Claim 1 further includes a time unit and a positioning unit connected to the processing device, the time unit and the positioning unit generate time information and positioning information respectively to be integrated with the sensing image passed to the processing unit. The respiration sensing system as claimed in claim 1, wherein the display is turned off immediately after displaying the respiration detection information. The breathing sensing system as described in claim 1, wherein the processing device determines whether the breathing detection information can be recognized from the display image of the sensing image, or whether the user's face image can be recognized from the sensing image, when When the processing device cannot identify the breathing detection information or the user's facial image according to the sensing image, it generates a warning signal. A breath sensing method, which is suitable for a breath detection device, the breath detection device is used to detect the concentration of a substance exhaled by a user, and the breath detection device includes a display, wherein the steps of the breath sensing method include: When the breath detection device detects the concentration of the substance, generate a breath detection information to display on the display; capture a sensing image, and its imaging range includes the display of the breath detection device and the user's face part, wherein the sensed image comprises a display image; and Recognize the breathing detection information and the device identification information according to the display image of the sensing image, and recognize a user identity information of the user according to the sensing image; wherein, when the display displays the breathing detection information , to capture the sensing image synchronously. The breathing sensing method as claimed in claim 13 further includes generating a warning signal when the concentration of the substance exceeds a standard concentration value. The breathing sensing method according to claim 13, wherein the display is turned off immediately after the display finishes displaying the breathing detection information. The breathing sensing method according to claim 13, wherein before the step of recognizing the breathing detection information according to the display image of the sensing image, it is determined whether the breathing detection information can be recognized from the display image of the sensing image , or whether the user's facial image is recognized from the sensing image, and when the breathing detection information or the user's facial image cannot be recognized according to the sensing image, a warning signal is generated.

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