CN113147591A - Method for monitoring children in vehicle - Google Patents
Method for monitoring children in vehicle Download PDFInfo
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- CN113147591A CN113147591A CN202110386370.3A CN202110386370A CN113147591A CN 113147591 A CN113147591 A CN 113147591A CN 202110386370 A CN202110386370 A CN 202110386370A CN 113147591 A CN113147591 A CN 113147591A
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- vehicle
- ultrasonic
- detection
- monitoring method
- radar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
Abstract
The invention discloses a method for monitoring children in a car, wherein an ultrasonic radar system is arranged at the bottom of the back row of the car, car body information is read out through a car body CAN network, and the ultrasonic radar system starts to work when detecting a lock-down signal. The ultrasonic radar system can continuously test the reflected wave of the object in the vehicle and simultaneously continuously compare the current waveform with the change rate of the last waveform. When the waveform change rate reaches the change rate generated by the movement of the child, the child or other creatures in the vehicle are judged to be moving at the moment, and alarm information is sent out. The in-vehicle child monitoring method provided by the invention has the advantages of low cost, low power consumption and the like.
Description
Technical Field
The invention relates to the field of vehicle-mounted application electronic products, in particular to a method for monitoring children in a vehicle.
Background
Some parts of the vehicle-mounted monitoring radar are arranged in the vehicle and used for monitoring abnormal conditions in the vehicle. These monitoring radars are millimeter wave radars which themselves have a high cost and a high power consumption.
Disclosure of Invention
The invention aims to provide a method for monitoring children in a vehicle, and aims to solve the problem that the monitoring cost of millimeter wave radar for abnormal conditions in the vehicle is high.
The invention provides a method for monitoring children in a vehicle, which comprises the following steps: the method comprises the following steps:
step S1: obtaining vehicle body information according to vehicle type information of a vehicle, and detecting a lock falling signal of a rear row safety lock;
step S2: starting an ultrasonic common radar after the lock is dropped, and detecting the position of the back row by using the ultrasonic common radar;
step S3: taking the first or certain detection result of the ultrasonic ordinary radar as a comparison group, continuously detecting the rear row condition of the vehicle by using the ultrasonic ordinary radar, and updating the current comparison group according to the detection result;
if the detected waveform of the rear row of the vehicle is compared with the contrast group after the last detection, and the waveform change rate is greater than a preset threshold value, outputting an abnormal alarm;
otherwise, the back row of the vehicle is continuously detected through the ultrasonic common radar and compared.
The vehicle type information acquisition mode comprises the step of reading vehicle body information through a CAN network.
Wherein the contrast group comprises an ultrasonic detection waveform after last detection.
Wherein the comparison group comprises data packets formed by ultrasonic detection waveforms of near several times including the ultrasonic detection waveform after the last detection.
And detecting the data packet for not less than 3 times.
Wherein the detection time interval of the ultrasonic common radar is not less than 0.5s
According to the method for monitoring the children in the car, the signals of the rear row are monitored in real time through the common ultrasonic radar according to the trigger signals, the signals are compared with the previous detection waveforms, and the final result evaluation is made according to the change rate.
Drawings
FIG. 1 is a schematic flow diagram of the present invention.
Detailed Description
The invention will be further elucidated and described with reference to the embodiments and drawings of the specification:
referring to fig. 1, the method for monitoring children in a vehicle of the present invention includes the following steps:
step S1: and obtaining vehicle body information according to the vehicle type information of the vehicle, and detecting a lock falling signal of a rear row safety lock. The vehicle type information acquisition mode comprises the step of reading vehicle body information through a CAN network. The lock-falling signal refers to a lock-falling signal fed back to the CAN network by the system after the rear safety belt is locked.
Step S2: and starting the ultrasonic common radar after the lock is dropped, and detecting the position of the back row by using the ultrasonic common radar.
Wherein the detection time interval of the ultrasonic common radar is not less than 0.5 s.
Step S3: taking the first or certain detection result of the ultrasonic ordinary radar as a comparison group, continuously detecting the rear row condition of the vehicle by using the ultrasonic ordinary radar, and updating the current comparison group according to the detection result;
if the detected waveform of the rear row of the vehicle is compared with the contrast group after the last detection, and the waveform change rate is greater than a preset threshold value, outputting an abnormal alarm;
otherwise, the back row of the vehicle is continuously detected through the ultrasonic common radar and compared.
In one embodiment, the contrast group comprises a last post-detection ultrasonic detection waveform; in still another embodiment, the contrast group includes packets of ultrasonic detection waveforms of the last few times including the ultrasonic detection waveform after the last detection.
According to the method for monitoring the children in the car, the signals of the rear row are monitored in real time through the common ultrasonic radar according to the trigger signals, the signals are compared with the previous detection waveforms, the final result evaluation is made according to the change rate, and compared with the existing method for detecting the children through the millimeter wave radar, the cost is greatly reduced.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. An in-vehicle child monitoring method is characterized by comprising the following steps:
step S1: obtaining vehicle body information according to vehicle type information of a vehicle, and detecting a lock falling signal of a rear row safety lock;
step S2: starting an ultrasonic common radar after the lock is dropped, and detecting the position of the back row by using the ultrasonic common radar;
step S3: taking the first or certain detection result of the ultrasonic ordinary radar as a comparison group, continuously detecting the rear row condition of the vehicle by using the ultrasonic ordinary radar, and updating the current comparison group according to the detection result;
if the detected waveform of the rear row of the vehicle is compared with the contrast group after the last detection, and the waveform change rate is greater than a preset threshold value, outputting an abnormal alarm;
otherwise, the back row of the vehicle is continuously detected through the ultrasonic common radar and compared.
2. The in-vehicle child monitoring method according to claim 1, wherein the obtaining of the vehicle type information includes reading the vehicle body information through a CAN network.
3. The in-vehicle child monitoring method of claim 1, wherein the comparison set includes a last post-test ultrasonic test waveform.
4. The in-vehicle child monitoring method according to claim 1 or 3, wherein the comparison group includes data packets formed by the ultrasonic detection waveforms of the last time but a few times including the ultrasonic detection waveform after the last detection.
5. The in-vehicle child monitoring method according to claim 4, wherein the number of detections in the data packet is not less than 3.
6. The in-vehicle child monitoring method according to claim 5, wherein the detection time interval of the ultrasonic ordinary radar is not less than 0.5 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110386370.3A CN113147591B (en) | 2021-04-12 | 2021-04-12 | Method for monitoring children in vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110386370.3A CN113147591B (en) | 2021-04-12 | 2021-04-12 | Method for monitoring children in vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113147591A true CN113147591A (en) | 2021-07-23 |
| CN113147591B CN113147591B (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110386370.3A Active CN113147591B (en) | 2021-04-12 | 2021-04-12 | Method for monitoring children in vehicle |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105966340A (en) * | 2016-05-11 | 2016-09-28 | 东风汽车公司 | Automobile intra-carriage life body anti-forgetting system and method |
| US9847004B1 (en) * | 2016-09-02 | 2017-12-19 | Atieva, Inc. | Vehicle child detection and response system |
| US20170370129A1 (en) * | 2016-06-22 | 2017-12-28 | Mark Ring | Automatic Child Safety Lock Release |
| US20190366965A1 (en) * | 2016-11-25 | 2019-12-05 | Iee International Electronics & Engineering S.A. | Polarimetric radar system and method for detecting and classifying vehicle occupants and other objects in a vehicle interior |
| CN111161508A (en) * | 2020-01-09 | 2020-05-15 | 查又铭 | Multi-mode detection alarm device and method for child mistakenly locking car |
| CN111907460A (en) * | 2020-08-27 | 2020-11-10 | 李滕 | Control method and system of vehicle-mounted safety seat with millimeter wave radar and safety seat |
| US20200353940A1 (en) * | 2019-05-10 | 2020-11-12 | Hyundai Motor Company | Vehicle and method for protecting person left in vehicle |
-
2021
- 2021-04-12 CN CN202110386370.3A patent/CN113147591B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105966340A (en) * | 2016-05-11 | 2016-09-28 | 东风汽车公司 | Automobile intra-carriage life body anti-forgetting system and method |
| US20170370129A1 (en) * | 2016-06-22 | 2017-12-28 | Mark Ring | Automatic Child Safety Lock Release |
| US9847004B1 (en) * | 2016-09-02 | 2017-12-19 | Atieva, Inc. | Vehicle child detection and response system |
| US20190366965A1 (en) * | 2016-11-25 | 2019-12-05 | Iee International Electronics & Engineering S.A. | Polarimetric radar system and method for detecting and classifying vehicle occupants and other objects in a vehicle interior |
| US20200353940A1 (en) * | 2019-05-10 | 2020-11-12 | Hyundai Motor Company | Vehicle and method for protecting person left in vehicle |
| CN111161508A (en) * | 2020-01-09 | 2020-05-15 | 查又铭 | Multi-mode detection alarm device and method for child mistakenly locking car |
| CN111907460A (en) * | 2020-08-27 | 2020-11-10 | 李滕 | Control method and system of vehicle-mounted safety seat with millimeter wave radar and safety seat |
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| CN113147591B (en) | 2023-04-07 |
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