CN111795834A - Brake effect real-time analysis system and method - Google Patents
Brake effect real-time analysis system and method Download PDFInfo
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- CN111795834A CN111795834A CN202010508867.3A CN202010508867A CN111795834A CN 111795834 A CN111795834 A CN 111795834A CN 202010508867 A CN202010508867 A CN 202010508867A CN 111795834 A CN111795834 A CN 111795834A
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Abstract
The invention relates to a real-time brake effect analysis system, which comprises: the acousto-optic alarm mechanism is used for sending a brake effective signal when the received field distance is greater than or equal to the received real-time brake distance, and is also used for sending a brake ineffective signal and executing corresponding acousto-optic alarm action when the received field distance is smaller than the received real-time brake distance; and the data storage chip is positioned in a storage server of a subway operator and used for storing a vehicle speed distance database in advance, and each brake distance corresponding to each vehicle speed value is stored in the vehicle speed distance database. The invention also relates to a real-time brake effect analysis method. The real-time brake effect analysis system and method provided by the invention can judge in time and have a certain automatic control level. Whether the distance from the front human body target to the metro vehicle is beyond the safe distance corresponding to the current vehicle speed can be judged in time, so that whether the current braking action of the metro vehicle is effective or not can be judged.
Description
Technical Field
The invention relates to the field of brake analysis, in particular to a brake effect real-time analysis system and method.
Background
A braking system, also known as the braking system of an associated vehicle, refers to a series of special devices that exert a certain force on certain parts of the vehicle, mainly the wheels, so as to apply a certain degree of positive braking thereto.
The braking action on the vehicle is only the external force which acts on the vehicle and has the direction opposite to the driving direction of the vehicle, and the magnitude of the external force is random and uncontrollable, so a series of special devices must be arranged on the vehicle to realize the functions.
A vehicle brake system is a brake mechanism that is provided exclusively for a brake device in a vehicle in order to technically ensure safe traveling of the vehicle and to increase the average speed of the vehicle. Generally, a vehicle braking system includes two independent sets of service braking device and parking braking device. Among them, the service brake device is operated by the foot of the driver, so it is also called foot brake device. The parking brake device is operated by the hand of the driver, and is also called a hand brake device.
The service brake device functions to decelerate or stop a running vehicle within a minimum distance. And the parking brake device functions to immobilize a vehicle that has been parked on various road surfaces. However, sometimes in an emergency situation, both types of braking devices may be used simultaneously to increase the effectiveness of the vehicle braking. In special-purpose vehicles and vehicles which are often driven in mountainous areas, the service brake device is overheated due to long-term and frequent braking, and therefore various types of auxiliary brake devices are often added to the vehicles to stabilize the vehicle speed when going downhill.
With the development of subways in various cities and regions, the performance of the braking systems of the subway vehicles has become a research and development concern for relevant manufacturers.
Disclosure of Invention
In order to solve the related problems in the prior art, the invention provides a system and a method for analyzing the braking effect in real time, which can analyze the distance from a human target to a subway vehicle in time when the human target is identified in front of the subway vehicle, so as to judge that the current braking action is effective when the distance is beyond the safe distance corresponding to the current vehicle speed.
Therefore, the invention at least needs to have the following two key points:
(1) analyzing a real-time safety distance corresponding to the real-time speed of the metro vehicle, and judging whether the brake at the current speed is effective or not based on a numerical comparison result of the distance between the nearest human body target and the metro vehicle and the real-time safety distance;
(2) and carrying out on-site detection on the distance from the nearest human body target in front to the metro vehicle by adopting a targeted visual detection mechanism.
According to an aspect of the present invention, there is provided a braking effect real-time analysis system, the system including:
the sound and light alarm mechanism is arranged in the subway vehicle and used for sending a brake effective signal when the received field distance is greater than or equal to the received real-time brake distance;
the acousto-optic alarm mechanism is also used for sending a brake invalid signal and executing corresponding acousto-optic alarm action when the received field distance is smaller than the received real-time brake distance;
the data storage chip is positioned in a storage server of a subway operator and used for storing a vehicle speed distance database in advance, and each brake distance corresponding to each vehicle speed value is stored in the vehicle speed distance database;
the content downloading mechanism is connected with the storage server through a network and is used for downloading the speed and distance database from a data storage chip of the storage server when the subway vehicle in which the content downloading mechanism is positioned starts to operate each time;
the speed measuring equipment is arranged in the metro vehicle and used for measuring the speed of the metro vehicle to be output as the real-time vehicle speed;
the signal conversion equipment is respectively connected with the sound-light alarm mechanism, the speed measurement equipment and the content downloading mechanism and is used for searching the corresponding braking distance in the vehicle speed distance database based on the received real-time vehicle speed to serve as the real-time braking distance;
the miniature capturing mechanism is arranged on the metro vehicle and is used for performing image data capturing operation on the front of the metro vehicle so as to obtain a corresponding instant captured image;
the contour extraction equipment is connected with the miniature capture mechanism and used for identifying an imaging area with the matching degree exceeding the human body contour in the instant capture image, acquiring each depth of field value of each pixel point in the imaging area and outputting the mean value of each depth of field value as a depth of field value to be analyzed;
the data conversion equipment is respectively connected with the sound-light alarm mechanism, the miniature capture mechanism and the contour extraction equipment and is used for calculating the field distance of the human body target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capture mechanism;
in the data storage chip, the brake distance corresponding to each speed value is the distance of the subway vehicle which continues to pass after the subway vehicle is braked at full speed from the speed;
in the data storage chip, the distance of the brake corresponding to each speed value is the distance of the subway vehicle passing continuously after the subway vehicle is braked at full speed from the speed value comprises the following steps: the larger the vehicle speed value is, the longer the corresponding braking distance is.
According to another aspect of the present invention, there is also provided a method for real-time analysis of braking effect, the method including:
the system comprises a subway vehicle, a sound-light alarm mechanism, a real-time brake control mechanism and a real-time brake control mechanism, wherein the sound-light alarm mechanism is arranged in the subway vehicle and used for sending a brake effective signal when a received field distance is greater than or equal to a received real-time brake distance;
the acousto-optic alarm mechanism is also used for sending a brake invalid signal and executing corresponding acousto-optic alarm action when the received field distance is smaller than the received real-time brake distance;
the method comprises the following steps that a data storage chip is used, is located in a storage server of a subway operator and is used for storing a vehicle speed distance database in advance, and brake distances corresponding to vehicle speed values are stored in the vehicle speed distance database;
the system comprises a content downloading mechanism, a speed and distance database and a storage server, wherein the content downloading mechanism is connected with the storage server through a network and is used for downloading the speed and distance database from a data storage chip of the storage server when the subway vehicle in which the content downloading mechanism is positioned starts operation each time;
using a speed measuring device, arranged in the metro vehicle, for measuring the speed of the metro vehicle to output as a real-time vehicle speed;
the signal conversion equipment is respectively connected with the sound-light alarm mechanism, the speed measurement equipment and the content downloading mechanism and is used for searching the corresponding braking distance in the vehicle speed distance database based on the received real-time vehicle speed to serve as the real-time braking distance;
the method comprises the steps that a micro capturing mechanism is used, is arranged on a metro vehicle and is used for carrying out image data capturing operation on the front of the metro vehicle so as to obtain a corresponding instant captured image;
using contour extraction equipment connected with the miniature capturing mechanism and used for identifying an imaging area with the matching degree exceeding the human body contour in the instant captured image, acquiring each depth of field value of each pixel point in the imaging area, and outputting the mean value of each depth of field value as a depth of field value to be analyzed;
the data conversion equipment is respectively connected with the sound-light alarm mechanism, the miniature capture mechanism and the contour extraction equipment and is used for calculating the field distance of the human body target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capture mechanism;
in the data storage chip, the brake distance corresponding to each speed value is the distance of the subway vehicle which continues to pass after the subway vehicle is braked at full speed from the speed;
in the data storage chip, the distance of the brake corresponding to each speed value is the distance of the subway vehicle passing continuously after the subway vehicle is braked at full speed from the speed value comprises the following steps: the larger the vehicle speed value is, the longer the corresponding braking distance is.
The real-time brake effect analysis system and method provided by the invention can judge in time and have a certain automatic control level. Whether the distance from the front human body target to the metro vehicle is beyond the safe distance corresponding to the current vehicle speed can be judged in time, so that whether the current braking action of the metro vehicle is effective or not can be judged.
Detailed Description
Embodiments of the braking effect real-time analysis system and method of the present invention will be described in detail below.
The subway is a rapid, large-traffic and electric power traction rail transit built in cities. The train runs on a totally closed line, the line located in the central urban area is basically arranged in an underground tunnel, the line outside the central urban area is generally arranged on a viaduct or the ground, and the english is metro (underpass). The subway is a special, high-density and high-traffic urban rail transit system (Metro) covering various underground and overground roadways in urban areas, and the Taiwan subway in China is called as 'Rapid transit'.
The type of the subway refers to the type of a vehicle used in the subway (urban rail transit). In general, subway models around the world have no uniform standard and are often customized according to the needs of subways in a certain place, such as the system a and the system B of the new york subway. In continental china, subway cars are often classified into A, B, C three models and L-type.
In the prior art, for some human bodies falling on a subway track unintentionally or intentionally, if the distance from the human bodies to the subway vehicle is beyond a safe distance, the braking action of the subway vehicle is effective, otherwise, the braking action of the subway vehicle is invalid, and at the moment, a manual braking mode or other more severe braking operations are required to complete the braking action, however, the safe distance of the subway vehicle is related to the real-time speed of the subway vehicle, so that the judgment of the safe distance is difficult in a manual mode.
In order to overcome the defects, the invention builds a system and a method for analyzing the braking effect in real time, and can effectively solve the corresponding technical problems.
The brake effect real-time analysis system shown according to the embodiment of the invention comprises:
the sound and light alarm mechanism is arranged in the subway vehicle and used for sending a brake effective signal when the received field distance is greater than or equal to the received real-time brake distance;
the acousto-optic alarm mechanism is also used for sending a brake invalid signal and executing corresponding acousto-optic alarm action when the received field distance is smaller than the received real-time brake distance;
the data storage chip is positioned in a storage server of a subway operator and used for storing a vehicle speed distance database in advance, and each brake distance corresponding to each vehicle speed value is stored in the vehicle speed distance database;
the content downloading mechanism is connected with the storage server through a network and is used for downloading the speed and distance database from a data storage chip of the storage server when the subway vehicle in which the content downloading mechanism is positioned starts to operate each time;
the speed measuring equipment is arranged in the metro vehicle and used for measuring the speed of the metro vehicle to be output as the real-time vehicle speed;
the signal conversion equipment is respectively connected with the sound-light alarm mechanism, the speed measurement equipment and the content downloading mechanism and is used for searching the corresponding braking distance in the vehicle speed distance database based on the received real-time vehicle speed to serve as the real-time braking distance;
the miniature capturing mechanism is arranged on the metro vehicle and is used for performing image data capturing operation on the front of the metro vehicle so as to obtain a corresponding instant captured image;
the contour extraction equipment is connected with the miniature capture mechanism and used for identifying an imaging area with the matching degree exceeding the human body contour in the instant capture image, acquiring each depth of field value of each pixel point in the imaging area and outputting the mean value of each depth of field value as a depth of field value to be analyzed;
the data conversion equipment is respectively connected with the sound-light alarm mechanism, the miniature capture mechanism and the contour extraction equipment and is used for calculating the field distance of the human body target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capture mechanism;
in the data storage chip, the brake distance corresponding to each speed value is the distance of the subway vehicle which continues to pass after the subway vehicle is braked at full speed from the speed;
in the data storage chip, the distance of the brake corresponding to each speed value is the distance of the subway vehicle passing continuously after the subway vehicle is braked at full speed from the speed value comprises the following steps: the larger the vehicle speed value is, the longer the corresponding braking distance is.
Next, a detailed configuration of the braking effect real-time analysis system according to the present invention will be further described.
In the real-time brake effect analysis system:
calculating the field distance of the human body target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capturing mechanism comprises the following steps: the deeper the depth of field value to be analyzed is, the farther the field distance obtained by calculation is;
wherein calculating the field distance of the human target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capturing mechanism comprises: the farther the imaging focal length of the micro-capture mechanism is, the farther the field distance obtained by calculation is.
In the real-time brake effect analysis system:
the content downloading mechanism is also used for deleting the downloaded speed and distance database when the subway vehicle in which the content downloading mechanism is positioned stops operating every time.
In the real-time brake effect analysis system:
the content downloading mechanism also comprises a wireless communication unit and a content storage unit, wherein the content storage unit is connected with the wireless communication unit and is used for receiving and storing the vehicle speed distance database;
the wireless communication unit is used for downloading the speed and distance database from a data storage chip of the storage server when the subway vehicle in which the wireless communication unit is located starts operation every time.
The real-time brake effect analysis system can further comprise:
and the liquid crystal display mechanism is arranged in a center console of the subway vehicle and is used for receiving and displaying the real-time vehicle speed and the real-time braking distance corresponding to the real-time vehicle speed.
The brake effect real-time analysis method shown according to the embodiment of the invention comprises the following steps:
the system comprises a subway vehicle, a sound-light alarm mechanism, a real-time brake control mechanism and a real-time brake control mechanism, wherein the sound-light alarm mechanism is arranged in the subway vehicle and used for sending a brake effective signal when a received field distance is greater than or equal to a received real-time brake distance;
the acousto-optic alarm mechanism is also used for sending a brake invalid signal and executing corresponding acousto-optic alarm action when the received field distance is smaller than the received real-time brake distance;
the method comprises the following steps that a data storage chip is used, is located in a storage server of a subway operator and is used for storing a vehicle speed distance database in advance, and brake distances corresponding to vehicle speed values are stored in the vehicle speed distance database;
the system comprises a content downloading mechanism, a speed and distance database and a storage server, wherein the content downloading mechanism is connected with the storage server through a network and is used for downloading the speed and distance database from a data storage chip of the storage server when the subway vehicle in which the content downloading mechanism is positioned starts operation each time;
using a speed measuring device, arranged in the metro vehicle, for measuring the speed of the metro vehicle to output as a real-time vehicle speed;
the signal conversion equipment is respectively connected with the sound-light alarm mechanism, the speed measurement equipment and the content downloading mechanism and is used for searching the corresponding braking distance in the vehicle speed distance database based on the received real-time vehicle speed to serve as the real-time braking distance;
the method comprises the steps that a micro capturing mechanism is used, is arranged on a metro vehicle and is used for carrying out image data capturing operation on the front of the metro vehicle so as to obtain a corresponding instant captured image;
using contour extraction equipment connected with the miniature capturing mechanism and used for identifying an imaging area with the matching degree exceeding the human body contour in the instant captured image, acquiring each depth of field value of each pixel point in the imaging area, and outputting the mean value of each depth of field value as a depth of field value to be analyzed;
the data conversion equipment is respectively connected with the sound-light alarm mechanism, the miniature capture mechanism and the contour extraction equipment and is used for calculating the field distance of the human body target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capture mechanism;
in the data storage chip, the brake distance corresponding to each speed value is the distance of the subway vehicle which continues to pass after the subway vehicle is braked at full speed from the speed;
in the data storage chip, the distance of the brake corresponding to each speed value is the distance of the subway vehicle passing continuously after the subway vehicle is braked at full speed from the speed value comprises the following steps: the larger the vehicle speed value is, the longer the corresponding braking distance is.
Next, the specific steps of the method for real-time analysis of braking effect according to the present invention will be further described.
The brake effect real-time analysis method comprises the following steps:
calculating the field distance of the human body target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capturing mechanism comprises the following steps: the deeper the depth of field value to be analyzed is, the farther the field distance obtained by calculation is;
wherein calculating the field distance of the human target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capturing mechanism comprises: the farther the imaging focal length of the micro-capture mechanism is, the farther the field distance obtained by calculation is.
The brake effect real-time analysis method comprises the following steps:
the content downloading mechanism is also used for deleting the downloaded speed and distance database when the subway vehicle in which the content downloading mechanism is positioned stops operating every time.
The brake effect real-time analysis method comprises the following steps:
the content downloading mechanism also comprises a wireless communication unit and a content storage unit, wherein the content storage unit is connected with the wireless communication unit and is used for receiving and storing the vehicle speed distance database;
the wireless communication unit is used for downloading the speed and distance database from a data storage chip of the storage server when the subway vehicle in which the wireless communication unit is located starts operation every time.
The real-time brake effect analysis method can further comprise the following steps:
the method comprises the steps that a liquid crystal display mechanism is arranged in a center console of the subway vehicle and used for receiving and displaying real-time vehicle speed and real-time brake distance corresponding to the real-time vehicle speed.
In addition, the data storage chip is a static random access memory. Static random-Access Memory (SRAM) is one type of random Access Memory. By "static," it is meant that the data stored in such a memory is always maintained as long as the memory remains powered on. In contrast, data stored in a Dynamic Random Access Memory (DRAM) needs to be periodically updated. However, when the power supply is stopped, the data stored in the SRAM is still lost (called a "volatile memory"), which is different from the ROM or flash memory that can store data after power is turned off.
Finally, it should be noted that each functional device in the embodiments of the present invention may be integrated into one processing device, or each device may exist alone physically, or two or more devices may be integrated into one device.
The functions, if implemented in the form of software-enabled devices and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A system for real-time analysis of braking effectiveness, the system comprising:
the sound and light alarm mechanism is arranged in the subway vehicle and used for sending a brake effective signal when the received field distance is greater than or equal to the received real-time brake distance;
the acousto-optic alarm mechanism is also used for sending a brake invalid signal and executing corresponding acousto-optic alarm action when the received field distance is smaller than the received real-time brake distance;
the data storage chip is positioned in a storage server of a subway operator and used for storing a vehicle speed distance database in advance, and each brake distance corresponding to each vehicle speed value is stored in the vehicle speed distance database;
the content downloading mechanism is connected with the storage server through a network and is used for downloading the speed and distance database from a data storage chip of the storage server when the subway vehicle in which the content downloading mechanism is positioned starts to operate each time;
the speed measuring equipment is arranged in the metro vehicle and used for measuring the speed of the metro vehicle to be output as the real-time vehicle speed;
the signal conversion equipment is respectively connected with the sound-light alarm mechanism, the speed measurement equipment and the content downloading mechanism and is used for searching the corresponding braking distance in the vehicle speed distance database based on the received real-time vehicle speed to serve as the real-time braking distance;
the miniature capturing mechanism is arranged on the metro vehicle and is used for performing image data capturing operation on the front of the metro vehicle so as to obtain a corresponding instant captured image;
the contour extraction equipment is connected with the miniature capture mechanism and used for identifying an imaging area with the matching degree exceeding the human body contour in the instant capture image, acquiring each depth of field value of each pixel point in the imaging area and outputting the mean value of each depth of field value as a depth of field value to be analyzed;
the data conversion equipment is respectively connected with the sound-light alarm mechanism, the miniature capture mechanism and the contour extraction equipment and is used for calculating the field distance of the human body target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capture mechanism;
in the data storage chip, the brake distance corresponding to each speed value is the distance of the subway vehicle which continues to pass after the subway vehicle is braked at full speed from the speed;
in the data storage chip, the distance of the brake corresponding to each speed value is the distance of the subway vehicle passing continuously after the subway vehicle is braked at full speed from the speed value comprises the following steps: the larger the vehicle speed value is, the longer the corresponding braking distance is.
2. The system for real-time analysis of braking effectiveness of claim 1, wherein:
calculating the field distance of the human body target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capturing mechanism comprises the following steps: the deeper the depth of field value to be analyzed is, the farther the field distance obtained by calculation is;
wherein calculating the field distance of the human target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capturing mechanism comprises: the farther the imaging focal length of the micro-capture mechanism is, the farther the field distance obtained by calculation is.
3. The system for real-time analysis of braking effectiveness of claim 2, wherein:
the content downloading mechanism is also used for deleting the downloaded speed and distance database when the subway vehicle in which the content downloading mechanism is positioned stops operating every time.
4. The system for real-time analysis of braking effectiveness of claim 3, wherein:
the content downloading mechanism also comprises a wireless communication unit and a content storage unit, wherein the content storage unit is connected with the wireless communication unit and is used for receiving and storing the vehicle speed distance database;
the wireless communication unit is used for downloading the speed and distance database from a data storage chip of the storage server when the subway vehicle in which the wireless communication unit is located starts operation every time.
5. The system for real-time analysis of braking effectiveness of claim 4, wherein the system further comprises:
and the liquid crystal display mechanism is arranged in a center console of the subway vehicle and is used for receiving and displaying the real-time vehicle speed and the real-time braking distance corresponding to the real-time vehicle speed.
6. A real-time analysis method for braking effect is characterized by comprising the following steps:
the system comprises a subway vehicle, a sound-light alarm mechanism, a real-time brake control mechanism and a real-time brake control mechanism, wherein the sound-light alarm mechanism is arranged in the subway vehicle and used for sending a brake effective signal when a received field distance is greater than or equal to a received real-time brake distance;
the acousto-optic alarm mechanism is also used for sending a brake invalid signal and executing corresponding acousto-optic alarm action when the received field distance is smaller than the received real-time brake distance;
the method comprises the following steps that a data storage chip is used, is located in a storage server of a subway operator and is used for storing a vehicle speed distance database in advance, and brake distances corresponding to vehicle speed values are stored in the vehicle speed distance database;
the system comprises a content downloading mechanism, a speed and distance database and a storage server, wherein the content downloading mechanism is connected with the storage server through a network and is used for downloading the speed and distance database from a data storage chip of the storage server when the subway vehicle in which the content downloading mechanism is positioned starts operation each time;
using a speed measuring device, arranged in the metro vehicle, for measuring the speed of the metro vehicle to output as a real-time vehicle speed;
the signal conversion equipment is respectively connected with the sound-light alarm mechanism, the speed measurement equipment and the content downloading mechanism and is used for searching the corresponding braking distance in the vehicle speed distance database based on the received real-time vehicle speed to serve as the real-time braking distance;
the method comprises the steps that a micro capturing mechanism is used, is arranged on a metro vehicle and is used for carrying out image data capturing operation on the front of the metro vehicle so as to obtain a corresponding instant captured image;
using contour extraction equipment connected with the miniature capturing mechanism and used for identifying an imaging area with the matching degree exceeding the human body contour in the instant captured image, acquiring each depth of field value of each pixel point in the imaging area, and outputting the mean value of each depth of field value as a depth of field value to be analyzed;
the data conversion equipment is respectively connected with the sound-light alarm mechanism, the miniature capture mechanism and the contour extraction equipment and is used for calculating the field distance of the human body target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capture mechanism;
in the data storage chip, the brake distance corresponding to each speed value is the distance of the subway vehicle which continues to pass after the subway vehicle is braked at full speed from the speed;
in the data storage chip, the distance of the brake corresponding to each speed value is the distance of the subway vehicle passing continuously after the subway vehicle is braked at full speed from the speed value comprises the following steps: the larger the vehicle speed value is, the longer the corresponding braking distance is.
7. The method for real-time analysis of braking effectiveness according to claim 6, wherein:
calculating the field distance of the human body target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capturing mechanism comprises the following steps: the deeper the depth of field value to be analyzed is, the farther the field distance obtained by calculation is;
wherein calculating the field distance of the human target corresponding to the imaging area based on the depth of field value to be analyzed and the imaging focal length of the miniature capturing mechanism comprises: the farther the imaging focal length of the micro-capture mechanism is, the farther the field distance obtained by calculation is.
8. The method for real-time analysis of braking effectiveness according to claim 7, wherein:
the content downloading mechanism is also used for deleting the downloaded speed and distance database when the subway vehicle in which the content downloading mechanism is positioned stops operating every time.
9. The method for real-time analysis of braking effectiveness according to claim 8, wherein:
the content downloading mechanism also comprises a wireless communication unit and a content storage unit, wherein the content storage unit is connected with the wireless communication unit and is used for receiving and storing the vehicle speed distance database;
the wireless communication unit is used for downloading the speed and distance database from a data storage chip of the storage server when the subway vehicle in which the wireless communication unit is located starts operation every time.
10. The method for real-time analysis of braking effectiveness according to claim 9, wherein the method further comprises:
the method comprises the steps that a liquid crystal display mechanism is arranged in a center console of the subway vehicle and used for receiving and displaying real-time vehicle speed and real-time brake distance corresponding to the real-time vehicle speed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010508867.3A CN111795834A (en) | 2020-06-06 | 2020-06-06 | Brake effect real-time analysis system and method |
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| CN202010508867.3A CN111795834A (en) | 2020-06-06 | 2020-06-06 | Brake effect real-time analysis system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112287139A (en) * | 2020-10-26 | 2021-01-29 | 泰州镭昇光电科技有限公司 | System and method for analyzing track duration by applying data analysis |
| CN112825133A (en) * | 2020-11-18 | 2021-05-21 | 无锡臻永科技有限公司 | Intelligent object information analysis platform and method |
-
2020
- 2020-06-06 CN CN202010508867.3A patent/CN111795834A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112287139A (en) * | 2020-10-26 | 2021-01-29 | 泰州镭昇光电科技有限公司 | System and method for analyzing track duration by applying data analysis |
| CN112287139B (en) * | 2020-10-26 | 2021-10-26 | 泰州润瀚环境科技有限公司 | System and method for analyzing track duration by applying data analysis |
| CN112825133A (en) * | 2020-11-18 | 2021-05-21 | 无锡臻永科技有限公司 | Intelligent object information analysis platform and method |
| CN112825133B (en) * | 2020-11-18 | 2021-11-05 | 广西飞云科技产业有限公司 | Intelligent object information analysis system and method |
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Application publication date: 20201020 |