The Ministry of Justice proposed the construction of a “platform, a standard system, and ten application systems†in the “Nanjing Conference†in May 2007 as the overall goal of prison informationization. After more than five years of exploration and practice, the domestic prison informatization industry has made considerable progress. In recent years, with the rapid development and widespread application of high-tech technologies represented by the Internet of Things technology, the construction of “smart peace prisons†has become the mainstream trend of the current prison digital security system construction.
The "Smart Peace Prison" is an important part of the prison information system. It is based on the essence of the needs of prison informationization. It is basically the goal of building the "object-awareness" prison security system, and the full use of information services "to better promote The concept of "administration of criminal clothing" is a concept that highlights the basic concepts of "information management, scientific management, and harmonious management" of modern prison civilization as the design and construction of an information system.
The Smart Peace Prison, based on the relevant policy documents of the ministries of the Ministry of Justice and other national ministries, integrates video surveillance, emergency alarms, access control, perimeter prevention, and electronic patrols under the premise of a deep analysis of the special security needs of prisons as “detaineesâ€. Furthermore, various techniques and equipment such as communication, radio frequency positioning, and three-dimensional maps are implemented using various modern technologies and equipment such as sophisticated IOT, video surveillance, intelligent analysis, biometrics, software development, and system integration. Systematically integrated and platformized management, establishing a prison alarm linkage business model with alarm as the core, using professional platform software to provide the police tangible combat platform for the grassroots police officers on duty, and providing a policing platform for prison leaders to supervise command and decision analysis.
By integrating the system design and construction experience of the past few years and observing the current state-of-the-art, mature technological means and equipment development and application status, we believe that high-tech means are changing the construction and operation model of the prison security system. “Smart Peace Prison "In this context, melons ripe.
1, the application of high-definition monitoring
According to engineering construction site and practical application needs, 1.3 million pixels, 2 million pixels, and 5 million pixels high-definition monitoring can be configured to improve the clarity of the monitoring image and expand the monitoring range. In particular, the application of lossless coding technology (HD-SDI networking method) makes it possible for prisons to realize high-definition monitoring and reconstruction on the premise of full use of existing cable resources. High-definition monitoring has achieved a leap from “visible†to “clear†surveillance images, a milestone in the progress of surveillance technology.
In addition, panoramic high-definition (5 million pixel) monitoring, also known as fisheye monitoring, can effectively compensate for the defects of the normal monitoring of the blind spot caused by viewing angle limitations. It is usually installed at the top of the inside and outside of the prison gate and is used to monitor the inside and outside of the gate. Without leaving monitoring and blind spots, effectively reducing the demand for monitoring front-ends, thereby reducing construction and operating costs.
2, thermal imaging monitoring applications
Infrared thermal imaging monitoring is the use of the most advanced night surveillance technology equipment - infrared thermal imaging monitoring system, not only can tear the night disguise, so that the night becomes like the day, and can break through the shelter of the trees and other objects, so that all night behavior Being effectively monitored. The application of infrared thermal imaging technology effectively avoids the dependence of traditional monitoring systems on visible light and effectively improves night security. Especially for the key security protection points on both sides of the perimeter of the prison and around the gates, the thermal imaging monitoring application provides powerful technical protection for the night security of the prison, and truly realizes day and night protection.
3, the application of biometrics
In the prison integrated digital security integrated system, the specific application of biometrics technology is commonly used in face recognition, palmprint recognition, vein recognition, etc. This technology uses the human body's biometric data to identify and determine the identity of individuals and is used in prison access control. Control, access management and other occasions, instead of traditional identification methods such as swiping cards and passwords. At present, biometric technologies and equipment are relatively mature, providing effective identification means for the identity management of prison personnel, and providing basic technical support for the modern management of prisons.
4, RF positioning applications
Applications of RF positioning include wireless RF controllers and RF terminal devices (commonly plastic wristbands, etc.), and display the current target's spatial location on electronic maps (commonly, three-dimensional maps, two-dimensional GIS maps, etc.). In the daily security management of prisons, the applications of RF positioning include the movement trajectory of the vehicle in the prison (real-time tracking and historical playback), the space positioning and movement trajectory of the prisoners (serving) in the prison space, the track and patrol of the police patrol route. Statistics of the number of people in the target area and alarms (alarm ratio alarms, etc.). The common application technologies are RFID, which displays all the targets in the prison on an electronic map and realizes centralized control of the current location, movement trajectory, and other information of the current prison target (person, vehicle, etc.) by the monitoring center.
5, image intelligence analysis application
Traditional image monitoring enables remote viewing and post-playback of live pictures, but it cannot overcome the human eye fatigue or "unintentional" negligence of security risks, so traditional video surveillance can guarantee the "ex post facto" function , but not "prevention" or advance "event intervention" to avoid the occurrence of malignant incidents. The application of monitoring image intelligence analysis is equivalent to configuring the monitoring center with a “never tired†on-duty police officer, real-time recognition of the behavior within the monitoring screen range and timely alarm. Therefore, the intelligent analysis of video images is based on the technical means to truly liberate the workforce of the police and provide a practical experience of the strong science and technology police. This will make the policing work of prison security easier.
In the construction of the “Smart Peace Prison†system, the application of monitoring and intelligent analysis is reflected in the following aspects:
Perimeter prevention
The Perimeter Prevention System is the basic guarantee for prisons to prevent and prevent the escape of prisoners (serving sentences) from being attacked by external forces. Perimeter security is an important point in the deployment of prison police force and safety management. The application of intelligent analysis in the perimeter defense system includes cross-line alarms, intrusion alarms, and other functions. Active tracking, single-ball tracking, and other technical means are used to implement smart tracking domes and intelligent DVRs.
Behavior analysis
The monitoring of the behaviors of the inmates (serving sentences) is an important task of the prison monitoring center, effectively preventing the various extreme behaviors of the inmates (serving sentences) from becoming the focus of police officers on duty. The behavior analysis functions of common surveillance videos in prison security include: climbing alarms, alarms for getting up, overtime for toilets, identification of brawls, and detections of leaving posts (or sleeping guards, on-duty police officers), etc., which are commonly used by prisoners (servants). Behaviors are identified and alerted in real time, and the performance of the personnel in custody (serving sentences) is effectively monitored, and various extreme behaviors are detected and disposed of in a controllable state of affairs.
The implementation of the intelligent video behavior analysis system is to connect the monitoring front-end to a dedicated intelligent analysis server. The intelligent analysis software of the embedded server analyzes and recognizes the current image and triggers an alarm.
License Plate Recognition
The license plate recognition technology can achieve the capture of the current vehicle license plate and license plate number recognition. In the prison security integrated system, a dedicated high-definition vehicle capture identification system is used to realize the identification of the current vehicle license plate number. The license plate recognition technology is applied in the management of the gate of the prison. The technology and related business management platform are used instead of the traditional vehicle registration process to realize intelligent vehicle entry and exit control.
Face recognition
Face recognition is the use of video capture to capture and save the biometric data of captured images. It mainly includes capture and save, identification and comparison functions, and is used in the management of entry and exit personnel in the prison gate management and control system. It can realize the current face and The data in the personnel registration database is compared to realize statistics on the occurrence frequency and identify the alarms by key control personnel, providing technical support for the effective improvement of the policing and control capabilities of the surrounding environment of the prison.
Video diagnosis
Video diagnosis technology is the application technology and solution for monitoring and warning of video picture quality in recent years. The technology supports image display loss, brightness abnormality, image color shift, fringe interference, snowflake interference, PTZ pan tilt control and other common anomaly identification and alarms, effectively guaranteeing video surveillance image quality.
6, digital security integration platform
The Prison Digital Security Integration Platform software is the head of the organization to construct the “Smart Peace Prisonâ€. It is the basic means for realizing the “smartness and informationalization†of the prison security integrated system, and it is also the actual combat platform for prison police officers and policing officers at all levels.
The design and development of the system should comply with the requirements of the system architecture standards of the national e-government system. System development is implemented using mainstream development architecture. Based on the basic support platform for security application components, the design principles of “high cohesion and loose coupling†and the concept of top-level modular design organize the internal structure of the application system to ensure that the system complies with information technology. The development trend and adapt to the needs of future dynamic upgrade applications.
As we all know, the alarm system is the core of the prison police policing. From the alarm signal source can be divided into triggered alarm, detection alarm, sound alarm, according to the security integration program, the above alarm information (hardware-level electrical signals) unified access platform, from the bottom of the platform (operating system, application middleware And the operational service framework) realizes the "message driving" of the "electrical signal" into the application software layer, and the platform triggers the corresponding linkage output according to the identification of "message routing" information. According to the different types of alarms, the basic information of the alarm event is output to the client (the police duty room) and the emergency command center (the monitoring image of the alarm point and the spatial location of the alarm point), providing information support for the decision-making command of the actual police policing. .
Hi-tech provides the necessary technical support for the realization of the “Smart Peace Prison†blueprint. In the construction of the “Smart Peace Prisonâ€, we need to consider how to make the above-mentioned high-tech means and equipments meticulous in constructing the “Smart Peace Prison†and maximize the potential of cutting-edge technology, from the actual combat of the system. Many aspects such as sex, economy, stability, and so on have comprehensively studied the scientific optimization and application of cutting-edge technology and equipment, which truly makes the prison security system even more powerful in an information-based environment, effectively embodying the essence of the science and technology-encouraged police, and embodying the original intention of science and technology development and serving the modern civilization of prisons. .
Of course, the development of cutting-edge technology, cutting-edge equipment, and upgrading of the actual application of prisons are complementary. The design plan of the “Smart Peace Prison†must fully consider the flexibility of system networking integration, ensure that the system has good compatibility at the architecture level, and make the increasingly updated technical equipment in the prison digital security integrated system as a matter of course; The need for innovation in hammering in actual combat applications will become a powerful driving force for stimulating the upgrading of technical equipment and technological means, and will provide scientific and objective guidance for the continuous development of equipment and means.
The "Smart Peace Prison" is an important part of the prison information system. It is based on the essence of the needs of prison informationization. It is basically the goal of building the "object-awareness" prison security system, and the full use of information services "to better promote The concept of "administration of criminal clothing" is a concept that highlights the basic concepts of "information management, scientific management, and harmonious management" of modern prison civilization as the design and construction of an information system.
The Smart Peace Prison, based on the relevant policy documents of the ministries of the Ministry of Justice and other national ministries, integrates video surveillance, emergency alarms, access control, perimeter prevention, and electronic patrols under the premise of a deep analysis of the special security needs of prisons as “detaineesâ€. Furthermore, various techniques and equipment such as communication, radio frequency positioning, and three-dimensional maps are implemented using various modern technologies and equipment such as sophisticated IOT, video surveillance, intelligent analysis, biometrics, software development, and system integration. Systematically integrated and platformized management, establishing a prison alarm linkage business model with alarm as the core, using professional platform software to provide the police tangible combat platform for the grassroots police officers on duty, and providing a policing platform for prison leaders to supervise command and decision analysis.
By integrating the system design and construction experience of the past few years and observing the current state-of-the-art, mature technological means and equipment development and application status, we believe that high-tech means are changing the construction and operation model of the prison security system. “Smart Peace Prison "In this context, melons ripe.
1, the application of high-definition monitoring
According to engineering construction site and practical application needs, 1.3 million pixels, 2 million pixels, and 5 million pixels high-definition monitoring can be configured to improve the clarity of the monitoring image and expand the monitoring range. In particular, the application of lossless coding technology (HD-SDI networking method) makes it possible for prisons to realize high-definition monitoring and reconstruction on the premise of full use of existing cable resources. High-definition monitoring has achieved a leap from “visible†to “clear†surveillance images, a milestone in the progress of surveillance technology.
In addition, panoramic high-definition (5 million pixel) monitoring, also known as fisheye monitoring, can effectively compensate for the defects of the normal monitoring of the blind spot caused by viewing angle limitations. It is usually installed at the top of the inside and outside of the prison gate and is used to monitor the inside and outside of the gate. Without leaving monitoring and blind spots, effectively reducing the demand for monitoring front-ends, thereby reducing construction and operating costs.
2, thermal imaging monitoring applications
Infrared thermal imaging monitoring is the use of the most advanced night surveillance technology equipment - infrared thermal imaging monitoring system, not only can tear the night disguise, so that the night becomes like the day, and can break through the shelter of the trees and other objects, so that all night behavior Being effectively monitored. The application of infrared thermal imaging technology effectively avoids the dependence of traditional monitoring systems on visible light and effectively improves night security. Especially for the key security protection points on both sides of the perimeter of the prison and around the gates, the thermal imaging monitoring application provides powerful technical protection for the night security of the prison, and truly realizes day and night protection.
3, the application of biometrics
In the prison integrated digital security integrated system, the specific application of biometrics technology is commonly used in face recognition, palmprint recognition, vein recognition, etc. This technology uses the human body's biometric data to identify and determine the identity of individuals and is used in prison access control. Control, access management and other occasions, instead of traditional identification methods such as swiping cards and passwords. At present, biometric technologies and equipment are relatively mature, providing effective identification means for the identity management of prison personnel, and providing basic technical support for the modern management of prisons.
4, RF positioning applications
Applications of RF positioning include wireless RF controllers and RF terminal devices (commonly plastic wristbands, etc.), and display the current target's spatial location on electronic maps (commonly, three-dimensional maps, two-dimensional GIS maps, etc.). In the daily security management of prisons, the applications of RF positioning include the movement trajectory of the vehicle in the prison (real-time tracking and historical playback), the space positioning and movement trajectory of the prisoners (serving) in the prison space, the track and patrol of the police patrol route. Statistics of the number of people in the target area and alarms (alarm ratio alarms, etc.). The common application technologies are RFID, which displays all the targets in the prison on an electronic map and realizes centralized control of the current location, movement trajectory, and other information of the current prison target (person, vehicle, etc.) by the monitoring center.
5, image intelligence analysis application
Traditional image monitoring enables remote viewing and post-playback of live pictures, but it cannot overcome the human eye fatigue or "unintentional" negligence of security risks, so traditional video surveillance can guarantee the "ex post facto" function , but not "prevention" or advance "event intervention" to avoid the occurrence of malignant incidents. The application of monitoring image intelligence analysis is equivalent to configuring the monitoring center with a “never tired†on-duty police officer, real-time recognition of the behavior within the monitoring screen range and timely alarm. Therefore, the intelligent analysis of video images is based on the technical means to truly liberate the workforce of the police and provide a practical experience of the strong science and technology police. This will make the policing work of prison security easier.
In the construction of the “Smart Peace Prison†system, the application of monitoring and intelligent analysis is reflected in the following aspects:
Perimeter prevention
The Perimeter Prevention System is the basic guarantee for prisons to prevent and prevent the escape of prisoners (serving sentences) from being attacked by external forces. Perimeter security is an important point in the deployment of prison police force and safety management. The application of intelligent analysis in the perimeter defense system includes cross-line alarms, intrusion alarms, and other functions. Active tracking, single-ball tracking, and other technical means are used to implement smart tracking domes and intelligent DVRs.
Behavior analysis
The monitoring of the behaviors of the inmates (serving sentences) is an important task of the prison monitoring center, effectively preventing the various extreme behaviors of the inmates (serving sentences) from becoming the focus of police officers on duty. The behavior analysis functions of common surveillance videos in prison security include: climbing alarms, alarms for getting up, overtime for toilets, identification of brawls, and detections of leaving posts (or sleeping guards, on-duty police officers), etc., which are commonly used by prisoners (servants). Behaviors are identified and alerted in real time, and the performance of the personnel in custody (serving sentences) is effectively monitored, and various extreme behaviors are detected and disposed of in a controllable state of affairs.
The implementation of the intelligent video behavior analysis system is to connect the monitoring front-end to a dedicated intelligent analysis server. The intelligent analysis software of the embedded server analyzes and recognizes the current image and triggers an alarm.
License Plate Recognition
The license plate recognition technology can achieve the capture of the current vehicle license plate and license plate number recognition. In the prison security integrated system, a dedicated high-definition vehicle capture identification system is used to realize the identification of the current vehicle license plate number. The license plate recognition technology is applied in the management of the gate of the prison. The technology and related business management platform are used instead of the traditional vehicle registration process to realize intelligent vehicle entry and exit control.
Face recognition
Face recognition is the use of video capture to capture and save the biometric data of captured images. It mainly includes capture and save, identification and comparison functions, and is used in the management of entry and exit personnel in the prison gate management and control system. It can realize the current face and The data in the personnel registration database is compared to realize statistics on the occurrence frequency and identify the alarms by key control personnel, providing technical support for the effective improvement of the policing and control capabilities of the surrounding environment of the prison.
Video diagnosis
Video diagnosis technology is the application technology and solution for monitoring and warning of video picture quality in recent years. The technology supports image display loss, brightness abnormality, image color shift, fringe interference, snowflake interference, PTZ pan tilt control and other common anomaly identification and alarms, effectively guaranteeing video surveillance image quality.
6, digital security integration platform
The Prison Digital Security Integration Platform software is the head of the organization to construct the “Smart Peace Prisonâ€. It is the basic means for realizing the “smartness and informationalization†of the prison security integrated system, and it is also the actual combat platform for prison police officers and policing officers at all levels.
The design and development of the system should comply with the requirements of the system architecture standards of the national e-government system. System development is implemented using mainstream development architecture. Based on the basic support platform for security application components, the design principles of “high cohesion and loose coupling†and the concept of top-level modular design organize the internal structure of the application system to ensure that the system complies with information technology. The development trend and adapt to the needs of future dynamic upgrade applications.
As we all know, the alarm system is the core of the prison police policing. From the alarm signal source can be divided into triggered alarm, detection alarm, sound alarm, according to the security integration program, the above alarm information (hardware-level electrical signals) unified access platform, from the bottom of the platform (operating system, application middleware And the operational service framework) realizes the "message driving" of the "electrical signal" into the application software layer, and the platform triggers the corresponding linkage output according to the identification of "message routing" information. According to the different types of alarms, the basic information of the alarm event is output to the client (the police duty room) and the emergency command center (the monitoring image of the alarm point and the spatial location of the alarm point), providing information support for the decision-making command of the actual police policing. .
Hi-tech provides the necessary technical support for the realization of the “Smart Peace Prison†blueprint. In the construction of the “Smart Peace Prisonâ€, we need to consider how to make the above-mentioned high-tech means and equipments meticulous in constructing the “Smart Peace Prison†and maximize the potential of cutting-edge technology, from the actual combat of the system. Many aspects such as sex, economy, stability, and so on have comprehensively studied the scientific optimization and application of cutting-edge technology and equipment, which truly makes the prison security system even more powerful in an information-based environment, effectively embodying the essence of the science and technology-encouraged police, and embodying the original intention of science and technology development and serving the modern civilization of prisons. .
Of course, the development of cutting-edge technology, cutting-edge equipment, and upgrading of the actual application of prisons are complementary. The design plan of the “Smart Peace Prison†must fully consider the flexibility of system networking integration, ensure that the system has good compatibility at the architecture level, and make the increasingly updated technical equipment in the prison digital security integrated system as a matter of course; The need for innovation in hammering in actual combat applications will become a powerful driving force for stimulating the upgrading of technical equipment and technological means, and will provide scientific and objective guidance for the continuous development of equipment and means.
NSK manufacture a full range of deep groove ball bearings. These bearings are the most common type and are used in a wide variety of applications.
Single-Row Deep Groove Ball Bearings
Pressed Steel Cages
Single-row deep groove ball bearings are the most common type of rolling bearings. Their use is very widespread.
In addition to open type bearings, these bearings often have steel shields or rubber seals installed on one or both sides and are prelubricated with grease. Also, snap rings are sometimes used on the periphery. As to cages, pressed steel ones are the most common.
For big deep groove ball bearings, machined brass cages are used.
Machined cages are also used for high speed applications.
Extra Small Ball Bearings and Miniature Ball Bearings
Miniature and instrument ball bearings can be divided into two basic types, deep groove and angular contact. The first (deep groove) can be further divided into the following five classes depending on their design details:
Standard type
Flanged outer ring
Extended inner ring
Expanded type in which one ring has a radial thickness that is larger than normal compared with the bearing width.
Thin section type in which both rings are extra thin in the radial direction. They can also be classified as: open, shielded, or sealed.
Maximum-Type Ball Bearings
Maximum-Type ball Bearings contain a larger number of balls than normal deep groove ball bearings because of filling slots in the inner and outer rings. Because of their filling slots, they are not suitable for applications with high axial loads. types of bearings have boundary dimensions equal to those of single-row deep groove ball bearings of Series 6200 and 6300 respectively. Besides the open type, ZZ type shielded bearings are also available. When using these bearings, it is important for the filling slot in the outer ring to be outside of the loaded zone as much as possible. Their cages are pressed steel.
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Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearings.com