With the establishment of China's socialist market economy, the rapid development of electronic banking, the increasing number of ATMs and the popularity of ATMs, ATM machines play an active role in facilitating people's lives and invigorating financial markets.
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ATM technology application
When the ATM machine is in operation, the main purpose of the corresponding monitoring facility installation is the following:
Prevent or monitor criminals from using stolen, forged or altered bank cards to illegally trade on ATM machines, withdraw cash, and provide evidence for the public security organs to collect evidence afterwards;
To reduce the issue of whether the cash withdrawal is issued and whether the cardholder has to withdraw money, etc., to reduce disputes between banks and depositors;
Prevent or monitor the ATM machine from being deliberately beaten or destroyed by criminals, providing a basis for the public security organs to collect evidence afterwards.
Due to the structure of the ATM machine, the environment in which it is used, and the variety of its models, special requirements are placed on the equipment selection and installation of the ATM machine monitoring system.
ATM machine runs for 24 hours, night illumination: about 15 Lux when there is a light box, when there is no light box
With the development of computer and multimedia technology and the emergence and maturity of large-capacity hard disks, digital monitoring equipment has moved to a practical stage and will gradually replace analog monitoring systems. Digital host for ATM monitoring, there are two types commonly used at present, one is a digital recording device composed of a PC (or industrial computer) and a Windows operating system, which is commonly known as a hard disk recorder; It is a so-called embedded DVR consisting of a dedicated hardware system architecture and embedded operating software.
a. Embedded DVR: This system is commonly used for three-way camera rotation video. When someone approaches the ATM, the proximity infrared probe senses the signal, activates the first camera to record the front portrait, and when the cash outlet is slightly moved When the switch senses that there is a cash out action, it will go to the second camera to record the image of the cash withdrawal port. The recording will be carried out for a certain period of time (time can be set), and automatically return to the first image record. When the person leaves the ATM, the recording stops. . If you open the ATM back door cash box, the magnetic switch can activate the third camera to record.
In addition to the single-channel switching recording method described above, the system three-way camera also has a mode of simultaneous recording. The principle is to add a four-picture splitter at the front end of the signal input, and combine the three video signals with one blank signal to synthesize one signal input processing. When someone approaches the ATM machine, the intrusion probe senses the signal, triggers the digital host to record all the signals, and automatically stops recording when the person leaves. At present, the mainstream embedded digital host on the market adopts the MPEG-2 compression algorithm, which has the advantages of good image definition and the disadvantage that the amount of data is too large (the amount of real-time data per hour per hour will exceed 3G).
The ATM digital monitoring system described above is suitable for the independent operation of the network, and the embedded digital host is actually an improvement of the home hard disk recorder. It has no network capabilities. Although there are companies now developing embedded hosts with network capabilities, there are two modes (combined and integrated), and the combination is a communication module. Integrated means hard disk recording and remote transmission within the same system framework. However, because the amount of image data per frame is large, no matter which mode, it can only be transmitted in the broadband network, it is impossible to transmit on a narrowband network such as a telephone line or an ISDN line, and generally only the live image can be transmitted, which is difficult to carry out. Data inquiry has basically no practical value.
b. PC framework network digital monitoring system: This type of ATM monitoring system can realize regional networking through ATM's existing private network, PSTN, ISDN, ADSL, local area network, wide area network, and even ordinary telephone lines, and implement central centralized management. It is the best solution to solve the off-line ATM monitoring system. Generally, it should have the following functions:
Remotely monitor live images and retrieve playback video data;
Remotely store and copy data data;
Remote intercom (customer help call, remote real-time voice intercom);
Automatically judge the faults of the camera, infrared light, power supply and monitoring host and report to the center. After receiving the center, the center can display and voice prompts on the display electronic map, and automatically record and upload images;
Automatically obtain alarm signals and send alarms to the center. After receiving the center, the center can display and voice prompts on the electronic map, and automatically record and upload images. The system consists of 2 to 3 cameras and proximity detectors on the ATM monitoring terminal. The magnetic switch and the network digital monitoring host are composed, and the central end is composed of a PC and network monitoring software.
From the perspective of future development trends, the ATM monitoring system must take the regional centralized management mode. Therefore, the digital host used in ATM monitoring at each network must have a truly complete network function. From the current actual situation and network security considerations, the transmission network adopts PSTN and ISDN. Applying advanced face recognition, key frame retrieval, image optimization and other techniques to the system is an epoch-making leap. Of course, the transmission of data on a narrowband network is also a prominent problem.
ATM common problem analysis
With the rapid development of the financial industry, banking services have surpassed the traditional service concept. ATM ATMs have been popularized throughout the country. It has brought us many conveniences and has become an inseparable assistant in our lives. In the daily life of the people. ATM self-service banking is unattended and provides financial services 24 hours a day. The security of its related equipment and customer transactions has always been one of the important tasks of the bank's security department. With the large-scale use of ATMs in the financial industry, some problems have gradually been exposed, which has seriously restricted the development of ATMs to a deeper level.
1. Supervise whether the ATM machine's money-out port is working properly and whether the cashier withdraws money or the ATM machine swallows the card, and minimize the dispute between the bank and the depositor.
2. Since most ATMs are in an unattended environment, it is necessary to supervise and prevent the vandalism of the criminals in order to provide an effective basis for the public security organs to collect evidence.
3. Prevent and monitor criminals' use of ATM's weaknesses for fraudulent activities. After the normal operation of the ATM, the bank lied that the ATM did not spit or spit, because there is no evidence to prove whether he took the money or took it. Money has caused entanglement.
4. Monitor and prevent very few criminals from using high-tech means to copy, misappropriate, or falsify depositors' savings cards to steal money from depositors through ATMs, so as to provide an effective basis for post-publication authorities to collect evidence.
ATM monitoring common technical problems
Question 1: Which areas does ATM monitoring mainly monitor? How many cameras are needed?
A: Generally, the main monitors are front, the cash outlet, and the banknote dispensing area. The front camera is mainly for obtaining the front image of the cashier or the destroyer. The camera at the cash exit port mainly takes out the cash out of the cash outlet or the abnormal situation. The camera mainly monitors the moving image during the banknote dispensing process. The cash-out port and the banknote dispensing area camera generally adopt the automatic] switching mode, so the real video recording is two-way, but three cameras are required. However, with the changes in the financial security situation, in recent times, many local public security departments have proposed the installation of five cameras. This requirement is mainly for the monitoring of the surrounding environment of the teller machine, that is, it is necessary to supplement the two-way environmental cameras (each The environment camera covers 90 degrees and the two channels cover 180 degrees), achieving panoramic coverage and preventing the monitoring of dead angles, providing more comprehensive evidence for after-the-fact forensics. In this way, you need to install 5 cameras, and the actual recording is 4 channels.
Question 2: Why should the image in the keyboard password area be occluded?
A: Due to the special construction of the teller machine, most of the camera at the cash exit port will monitor the keyboard image of the ATM machine, which will result in the image of the input password being recorded. In order to prevent the internal employees of the bank from committing crimes, part of the image of this area of ​​the ATM keyboard must be Be occluded to avoid leaving a security hole in the future.
Question 3: In addition to superimposing time, date, etc., why stack the cashier's bank card number on the video image? How to get the card number?
A: There are several reasons for this. 1 Only by superimposing the bank card number on the front image of the payee can you directly prove that the person has withdrawn the money, and provide the most direct and effective evidence support for the forensic evidence in the aftermath; 2 By superimposing the bank card number, it also provides an aspect for the future video search. Otherwise, it is very troublesome to find the video of the dispute card in the video of several months.
Due to financial security issues, most of the bank card numbers are now read from the card reader using dedicated hardware. The form of the network access card number has been banned by the bank.
Question 4: Why do some banks need to install SMS alarm module?
A: Because the SMS alarm has the characteristics of instant, economical and convenient, it can be transmitted to the mobile phone of the relevant personnel in the first time when there is a sabotage on the teller machine, which provides a possibility to deal with the problem in time.
Question 5: Why do I need to install an emergency help button on the ATM machine? What function should the button have?
A: Due to the special nature of the withdrawal environment, when the cashier feels dangerous or needs help during the withdrawal process, it can promptly and concealed the emergency button installed on the operator panel of the ATM to call the bank security personnel to handle or trigger the relevant sound. The light alarm device prevents timely occurrence of vicious incidents. This button can improve the bank's preventive ability and thus better maintain the bank's reputation.
The buttons generally have the functions of intercom, automatic broadcast, and triggering alarm devices.
Question 6: How to solve the problem of monitoring the host crash?
A: No matter whether it is embedded or industrial-controlled monitoring host, there is a problem that the video is not crashed during the actual use, which leads to many cases being unable to obtain evidence. From the product point of view, there is no absolutely perfect product, the factors that cause the monitoring host to crash are also very complicated. In many cases, it is normal to turn off the power and then turn it back on after the crash. A certain percentage of the crash is usually allowed, but Due to the special nature of ATM monitoring, most monitoring hosts are in an unattended 24-hour working state. Considering security issues, most banks do not allow ATM monitoring systems to access the bank's business network, so when the crash is detected, late.
Solution: Install a host status monitor. When the crash occurs, the monitoring host power will be automatically cut off and re-connected. If it cannot be recovered, the alarm device will be triggered to notify the maintenance personnel to repair.
Question 7: What kind of trigger recording method is generally used for ATM monitoring?
A: The human activity monitor, vibration sensor, and banknote sensor trigger the recording, and the image motion detection triggers the recording as a supplement.
Question 8: How to deal with people's front camera being partially blocked?
A: Due to the extensive installation of ATM monitoring, many criminal suspects also know that the monitoring system is installed on the ATM. They also know that they all block the camera, and the system will alarm. Recently, some parts of the camera have blocked the camera and the monitoring system has been lost. effect. For this new type of crime, it can be solved by a combination of human activity monitor + image motion detection.
Question 9: Why do I need to combine the front image and the cash exit image into one image when recording?
A: If you record independently, there will be many disputes in the future court forensics, and the combination of the front image and the cash withdrawal image into an image is more direct, reliable and effective, and there is no need to make disputed reasoning.
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