CN221978995U - Test system for driver monitoring equipment - Google Patents

Abstract

The present disclosure relates to the technical field of simulation testing, and specifically, to a test system for a driver monitoring device. A driver monitoring device, a host computer system, and an environmental control box, wherein the driver monitoring device is located in the environmental control box, and the environmental control box is used to place the driver monitoring device at a target temperature and target humidity; the driver monitoring device includes a DMS host and a DMS camera, and the DMS host is connected to the DMS camera and the host computer system, and is used to monitor and judge the images collected by the DMS camera, and feed back the monitoring results to the host computer system; the host computer system is used to display the monitoring results. In this way, the operating environment of the driver monitoring device can be controlled, the environmental reliability verification of the driver monitoring device can be performed, the consistency and stability of the output of the driver monitoring device under different circumstances can be determined, the test environment can be reproduced conveniently, and the data required for optimization can be provided for the development and verification stage.

Description

Test system for driver monitoring equipment

Technical Field

The present disclosure relates to the technical field of simulation testing, and in particular, to a test system for a driver monitoring device.

Background Art

At present, with the continuous development of vehicle technology, more and more vehicles are equipped with DMS (Driver Monitor System). The working environment of driver monitoring equipment is complex and changeable, and usually a lot of tests are required to ensure the stability and reliability of the monitoring system. However, in-vehicle testing and verification is time-consuming and laborious, and the test results are difficult to reproduce.

Utility Model Content

The purpose of the present disclosure is to provide a test system for a driver monitoring device to verify the environmental reliability of the driver monitoring device and provide data required for optimization in the development and verification stage.

In order to achieve the above object, the present disclosure provides a test system for a driver monitoring device, including a driver monitoring device, a host computer system and an environmental control box.

The driver monitoring device is located in the environmental control box, and the environmental control box is used to keep the driver monitoring device at a target temperature and a target humidity;

The driver monitoring device includes a DMS host and a DMS camera. The DMS host is connected to the DMS camera and the host computer system, and is used to monitor and judge the images collected by the DMS camera, and feed back the monitoring results to the host computer system;

The host computer system is used to display the monitoring results.

Optionally, the host computer system includes a controller;

The controller is connected to the DMS host and is used to receive monitoring results and monitor the evidence image sending function of the driver monitoring device, wherein the monitoring results are information indicating the driver status, and the evidence image is an image captured by the DMS camera when the monitoring results are abnormal.

Optionally, the host computer system further includes a first display screen,

The first display screen is connected to the controller, and the controller is further used to send the images in the pre-stored picture test set to the first display screen, so that the first display screen displays the images in the picture test set;

The environmental control box is provided with a perspective window, and the DMS camera collects the image displayed on the first display screen through the perspective window.

Optionally, the controller stores a plurality of image test sets, each of which corresponds to a preset label, and the host computer system further includes an alarm;

The alarm is connected to the controller and is used for giving an alarm when the monitoring result does not match the preset label corresponding to the picture test set.

Optionally, the test system further includes a protocol conversion device, and the protocol conversion device is connected between the host computer system and the DMS host.

Optionally, the protocol conversion device is a PCAN.

Optionally, the test system further comprises a second display screen,

The second display screen is connected to the DMS host and is used to display the real-time image captured by the DMS camera.

Optionally, the second display screen is a CVBS display screen.

Optionally, the test system further comprises a DC power supply and an ignition simulator;

The DMS host is also connected to the DC power supply and the ignition simulator;

The ignition simulator is used to simulate the ignition state of the vehicle and output an ignition signal;

The DMS host is also used to start when the DC power supply is powered and the ignition signal is received.

Optionally, the DMS host is provided with a POE power supply port, and the DMS camera is connected to the POE power supply port.

In the above technical solution, the driver monitoring device is located in the environmental control box, which is used to keep the driver monitoring device at the target temperature and target humidity; the driver monitoring device includes a DMS host and a DMS camera, and the DMS host is connected to the DMS camera and the host computer system, and is used to monitor and judge the images collected by the DMS camera, and feed back the monitoring results to the host computer system; the host computer system is used to display the monitoring results. In this way, the operating environment of the driver monitoring device can be controlled, the environmental reliability of the driver monitoring device can be verified, the consistency and stability of the output of the driver monitoring device under different conditions can be determined, the test environment can be reproduced conveniently, and the data required for optimization can be provided for the development and verification stage.

Other features and advantages of the present disclosure will be described in detail in the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

FIG. 1 is a block diagram of a test system for a driver monitoring device provided by an exemplary embodiment of the present disclosure.

FIG. 2 is a schematic diagram of a test system for a driver monitoring device provided by an exemplary embodiment of the present disclosure.

FIG. 3 is a block diagram of a test system for a driver monitoring device provided by an exemplary embodiment of the present disclosure.

Description of Reference Numerals

10 Driver Monitoring Equipment 101 DMS Host 102 DMS Camera

11 Host computer system 111 Controller 112 First display screen

113 alarm 12 environmental control box 13 protocol conversion equipment

14 Second display screen 15 DC power supply 16 Ignition simulator

DETAILED DESCRIPTION

The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

FIG1 is a block diagram of a test system for a driver monitoring device provided by an exemplary embodiment of the present disclosure. As shown in FIG1 , the test system for a driver monitoring device 10 provided by the present disclosure includes a driver monitoring device 10 , a host computer system 11 and an environmental control box 12 , wherein the driver monitoring device 10 includes a DMS host 101 and a DMS camera 102 .

The driver monitoring device 10 is located in an environmental control box 12, and the environmental control box 12 is used to keep the driver monitoring device 10 at a target temperature and a target humidity;

The DMS host 101 is connected to the DMS camera 102 and the host computer system 11, and is used to monitor and judge the images collected by the DMS camera 102, and feed back the monitoring results to the host computer system 11;

The host computer system 11 is used to display the monitoring results.

For example, the target temperature may range from -40°C to +85°C, and the target humidity may range from 10%RH to 98%RH. The target temperature and target humidity provided during the operation of the environmental control box 12 may be set by relevant personnel through the control panel of the environmental control box 12. In this way, the driver monitoring device 10 is set in the environmental control box 12, which can provide the temperature and humidity required for the test for the driver monitoring device 10 under test, so that the driver monitoring device 10 can operate various standard working conditions in a reliability environment, save test costs, and provide the data required for optimization in the development verification stage.

The images collected by the DMS camera 102 may be images in a predetermined image test set, and during the test, the images in the image test set are displayed within the effective recognition range of the DMS camera 102. For example, the static fatigue driving images collected by the real vehicle may be classified according to the DMS fatigue driving behavior, for example, they may be divided into a fatigue image test set, a distraction image test set, a non-driving behavior image test set, and the like.

Taking the image A in the distraction picture test set captured by the DMS camera 102 as an example, at this time, the DMS host 101 can generate monitoring results based on the captured image and feed the monitoring results back to the host computer system 11. If the detection result displayed by the host computer system 11 indicates user fatigue, which is inconsistent with the user distraction actually represented by image A, at this time, it can be determined that the monitoring result does not match the content in image A, and it can be determined that under the current environment, the reliability of the operation of the DMS host 101 of the driver monitoring device 10 is low, that is, the accuracy of the monitoring result output by the DMS host 101 is low, that is, under the current humidity and temperature conditions, the DMS host 101 does not have the ability to accurately judge the driver's state. If the detection result displayed by the host computer system 11 indicates user distraction, which is consistent with the user distraction actually represented by image A, at this time, it can be determined that the monitoring result matches the content in image A, and it can be determined that under the current environment, the reliability of the operation of the DMS host 101 of the driver monitoring device 10 is high, that is, under the current humidity and temperature conditions, the DMS host 101 has the ability to accurately judge the driver's state. In addition, the image collected by the DMS camera 102 can also be uploaded to the host computer system 11, and the reliability of the DMS camera 102 can be determined based on the collected image displayed by the host computer system 11. For example, if the collected image displayed by the host computer system 11 is clear and consistent with image A, it can be determined that the DMS camera 102 has a high reliability, that is, under the current humidity and temperature conditions, the DMS camera 102 has the ability to accurately collect images; if the collected image displayed by the host computer system 11 is not clear or has a large difference from image A, it can be determined that the DMS camera 102 does not have a high reliability, that is, under the current humidity and temperature conditions, the DMS camera 102 does not have the ability to accurately collect images.

In this way, relevant personnel can match the determined monitoring results with the content in image A to determine the reliability of the operation of the driver monitoring device 10 under the current environment.

In the above technical solution, the driver monitoring device 10 is located in the environmental control box 12, and the environmental control box 12 is used to keep the driver monitoring device 10 at the target temperature and target humidity; the driver monitoring device 10 includes a DMS host 101 and a DMS camera 102, and the DMS host 101 is connected to the DMS camera 102 and the host computer system 11, and is used to monitor and judge the image collected by the DMS camera 102, and feed back the monitoring results to the host computer system 11; the host computer system 11 is used to display the monitoring results. In this way, the operating environment of the driver monitoring device 10 can be controlled, the environmental reliability of the driver monitoring device 10 can be verified, the consistency and stability of the output of the driver monitoring device 10 under different conditions can be determined, the test environment can be reproduced conveniently, and the data required for optimization can be provided for the development and verification stage.

In an optional embodiment, the host computer system 11 may include a controller 111, which is connected to the DMS host 101 and is used to receive monitoring results and monitor the evidence image sending function of the driver monitoring device 10, wherein the monitoring results are information indicating the driver's status, and the evidence image is an image captured by the DMS camera 102 when the monitoring results are abnormal.

For example, if the DMS host 101 monitors and judges the image collected by the DMS camera 102, and the obtained monitoring result indicates that the driver is abnormal, such as distracted, fatigued, etc., then the evidence image that determines that the monitoring result is abnormal can be sent to the controller 111. If the controller 111 receives the evidence image, it can be determined that there is no abnormality in the evidence image sending function of the driver monitoring device 10. In the case of determining that the monitoring result is abnormal, the DMS host 101 can synchronously send the monitoring result and the corresponding evidence image to the controller 111, so that relevant personnel can determine whether the judgment of the DMS host 101 is correct in the subsequent review process.

In an optional embodiment, the test system of the driver monitoring device 10 provided by the present disclosure may further include a test display screen for displaying images in a predetermined picture test set, which may be placed in the environmental control box 12 .

However, the environmental conditions required by the driver monitoring device 10 during the test process are relatively harsh. In this state, the display screen may be difficult to operate normally, that is, the display screen may be difficult to operate normally in a low temperature environment or a high temperature and high humidity environment. Therefore, in another optional embodiment, if the environmental control box 12 is provided with a perspective window as shown in the dotted line portion of FIG. 2, the display screen for displaying the images in the predetermined picture test set (i.e., the first display screen 112 hereinafter) can be placed on the side of the environmental control box 12 provided with the perspective window.

In an optional embodiment, the host computer system 11 may also include a first display screen 112, and the controller 111 is also used to send images in a pre-stored picture test set to the first display screen 112, so that the first display screen 112 displays the images in the picture test set; a perspective window is provided on the environmental control box 12, and the DMS camera 102 captures the image displayed on the first display screen 112 through the perspective window.

For example, the first display screen 112 and the controller 111 may be integrated into the same device, such as a PC host computer, or may be two independent devices connected to each other, which is not limited here.

In this way, the first display screen 112 can display static pictures of the driver in different states, that is, simulate different fatigue states and driving scenes, so as to more comprehensively evaluate the reliability of the environmental reliability of the driver monitoring device 10 .

In an optional embodiment, the controller 111 stores a plurality of image test sets, each image test set corresponds to a preset label, and the host computer system 11 further includes an alarm 113;

The alarm 113 is connected to the controller 111 and is used to sound an alarm when the monitoring result does not match the preset label corresponding to the image test set.

For example, if the monitoring result is that the user is distracted while driving due to answering a phone call, the controller 111 may receive the abnormal monitoring result and the corresponding evidence image. The image is one of the image test sets, that is, the image test set to which the image belongs and the corresponding preset label can be determined. If the preset label is fatigue, which does not match the determined monitoring result, it can be determined that the DMS host 101 is abnormal. At this time, an alarm is issued through the alarm 113, and relevant personnel can be reminded to handle the DMS host 101 in time.

In an optional embodiment, the test system of the driver monitoring device 10 provided in the present disclosure may further include a protocol conversion device 13 , and the protocol conversion device 13 is connected between the host computer system 11 and the DMS host 101 .

As shown in FIG2 , the protocol conversion device 13 may be a PCAN. The communication protocol in the vehicle is usually CAN communication, and the DMS host 101 may also adopt this communication protocol, and the message on the CAN network may be transmitted to the host computer system 11 through the USB interface via the PCAN. Specifically, the protocol conversion device 13 may be connected between the controller 111 and the DMS host 101.

In an optional embodiment, the test system of the driver monitoring device 10 provided in the present disclosure may further include a second display screen 14 , which is connected to the DMS host 101 and is used to display the real-time image captured by the DMS camera 102 .

Among them, the second display screen 14 can be a CVBS display screen. The DMS host 101 can output real-time images to an external CVBS display screen through its video output chip, and monitor the output status of the DMS camera 102 through the image status of the CVBS display screen. In this way, relevant personnel can determine whether the output image of the DMS camera 102 during the environmental test will have obvious state changes based on the CVBS display, such as whether the image clarity, image contrast, image color and image stability (i.e., whether the image is shaking) have changed. For example, if any one of the image clarity, image contrast, image color and image stability changes significantly, it can be determined that the DMS camera 102 may have an abnormal operation, that is, under the current humidity and temperature conditions, the DMS camera 102 does not have the ability to accurately collect images, that is, the reliability of the DMS camera 102 is insufficient. If the image clarity, image contrast, image color and image stability do not change significantly, it can be determined that the DMS camera 102 does not have the possibility of abnormal operation, that is, under the current humidity and temperature conditions, the DMS camera 102 has the ability to accurately collect images, that is, the DMS camera 102 has reliability.

As shown in FIG3 , the test system of the driver monitoring device 10 provided in the present disclosure may further include a DC power supply 15 and an ignition simulator 16 ;

The DMS host 101 is also connected to a DC power supply 15 and an ignition simulator 16;

The ignition simulator 16 is used to simulate the ignition state of the vehicle and output an ignition signal;

The DMS host 101 is also used to start up when the DC power supply 15 supplies power and receives an ignition signal.

Among them, the DC power supply 15 provides power to the DMS host 101, and the ignition simulator 16 provides an ignition signal to the DMS host 101. In this way, the ignition state of the vehicle can be simulated by the ignition simulator 16, making the test environment of the driver monitoring device 10 closer to the actual vehicle state, thereby improving the reliability of the test results.

Optionally, the DMS host 101 is provided with a POE power supply port, and the DMS camera 102 is connected to the POE power supply port. In this way, the DMS host 101 can provide power to the DMS camera 102.

The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims (10)

1. A test system for a driver monitoring device, comprising a driver monitoring device (10), a host computer system (11) and an environmental control box (12), The driver monitoring device (10) is located in the environmental control box (12), and the environmental control box (12) is used to keep the driver monitoring device (10) at a target temperature and a target humidity; The driver monitoring device (10) comprises a DMS host (101) and a DMS camera (102); the DMS host (101) is connected to the DMS camera (102) and the host computer system (11) and is used to monitor and judge the image collected by the DMS camera (102), and feed back the monitoring result to the host computer system (11); The host computer system (11) is used to display the monitoring results. 2. The test system according to claim 1, characterized in that the host computer system (11) comprises a controller (111); The controller (111) is connected to the DMS host (101) and is used to receive monitoring results and monitor the evidence image sending function of the driver monitoring device (10), wherein the monitoring results are information indicating the driver status, and the evidence image is an image captured by the DMS camera (102) when the monitoring results are abnormal. 3. The test system according to claim 2, characterized in that the host computer system (11) further comprises a first display screen (112), The first display screen (112) is connected to the controller (111), and the controller (111) is further used to send images in a pre-stored picture test set to the first display screen (112), so that the first display screen (112) displays the images in the picture test set; The environmental control box (12) is provided with a perspective window, and the DMS camera (102) collects the image displayed on the first display screen (112) through the perspective window. 4. The test system according to claim 3, characterized in that the controller (111) stores a plurality of image test sets, each of which corresponds to a preset label, and the host computer system (11) further comprises an alarm (113); The alarm (113) is connected to the controller (111) and is used to alarm when the monitoring result does not match the preset label corresponding to the image test set. 5. The test system according to claim 1 is characterized in that the test system further comprises a protocol conversion device (13), and the protocol conversion device (13) is connected between the host computer system (11) and the DMS host (101). 6. The test system according to claim 5, characterized in that the protocol conversion device (13) is a PCAN. 7. The test system according to claim 1, characterized in that the test system further comprises a second display screen (14), The second display screen (14) is connected to the DMS host (101) and is used to display the real-time image collected by the DMS camera (102). 8. The test system according to claim 7, characterized in that the second display screen (14) is a CVBS display screen. 9. The test system according to claim 1, characterized in that the test system further comprises a DC power supply (15) and an ignition simulator (16); The DMS host (101) is also connected to the DC power supply (15) and the ignition simulator (16); The ignition simulator (16) is used to simulate the ignition state of the vehicle and output an ignition signal; The DMS host (101) is also used to start up when the DC power supply (15) supplies power and receives the ignition signal. 10. The test system according to claim 9, characterized in that the DMS host (101) is provided with a POE power supply port, and the DMS camera (102) is connected to the POE power supply port.