1.2 Monitoring System Functions

Infrared thermal imager adopts the latest electronic technology, infrared thermal image temperature measurement technology is through the infrared detector to receive the infrared radiation of the measured object, and then from the signal processing system into a video thermal image of the target technology. With the leading domestic and international advanced level, the main characteristics are:

➢ advanced detector technology

External detector is the core component of thermal imager. Its performance, reliability and maintainability are the most important parts in the whole thermal imager system.

Using 384*288, 17 m uncooled focal plane detector, the detector performance is mature, cost-effective, stable supply. The detector has higher pixel size, smaller pixel size, clearer image display and higher resolution.

➢ the real-time imaging

Thermal imager output image field frequency up to 50 frames/second, complete real-time, no trailing, no jumping frame, to ensure that within the effective detection range, the object profile, appearance characteristics and behavior action can be clearly resolved, meet the requirements of behavioral analysis.

➢ digital image enhancement (DDE)

The system adopts infrared digital image detail enhancement (DDE) technology to solve the problem that the temperature range of application scene is large and the gray scale range of target information is much larger than the 256-level limit of image display equipment. In short, a high-speed processor is used to analyze the original target information and extract the distribution of useful gray level information and useless gray level information, and then to compress the gray level of useless information in a large scale, and compress or even stretch the gray level of useful information in a small scale, so as to obtain images with rich actual levels.

➢ intelligent uniformity correction technique

The non-uniformity correction of thermal imager is a major problem affecting the image performance. Our company adopts the intelligent uniformity correction technology, which can not only achieve good results, but also greatly reduce the frequency of thermal imager correction, reduce the fatigue degree of the correction mechanism, and effectively improve the reliability of the thermal imager working for a long time. In normal long working hours, as the internal temperature of the system is stable, the scenario-based correction technology is automatically adopted at this time, and good and clear images can be obtained without motion correction mechanism. If the uniformity of the thermal imager deteriorates due to environmental temperature change or power supply failure, the thermal imager will automatically correct according to the signal of the internal sensor to ensure a good and clear image; At the same time, as the working time of the thermal imager increases, the internal temperature becomes more and more stable, and the intelligent calibration interval increases. Until the internal temperature is basically stable, the calibration is no longer performed, and the scene-based calibration technology is automatically adopted to effectively improve the reliability of the system.

➢ the whole temperature range and stable work

Whatever is formed coke planar array or refrigeration is taixi planar array, because its itself is the focal plane array resistance temperature characteristic is used to detect the infrared target, only as far as possible to ensure sensitive pixels in the focal plane array itself the consistency and stability of the reference temperature, to improve the resolution of the thermal imaging system, reduce the difficulty of the late nonuniformity correction system, fundamentally solve the image quality.

➢ the comprehensive reliability assurance

In addition to the unique lens design and control algorithm, intelligent uniformity correction technology to improve the reliability of the mechanical structure of the system, at the same time, the design of power protection, high temperature object protection circuit, effectively improve the electrical reliability of the thermal imager.

The electric protection circuit of thermal imager can effectively prevent the damage to thermal imager caused by over current, over voltage and repetitive switching machine.

The protection of high temperature objects can effectively prevent the sun and other high temperature objects from directly entering the thermal imager and causing damage to the detector. This problem is especially obvious in the case of plateau and desert, clear sky and strong sunlight.

2.4 Monitoring software platform and functions

u Real-time display: real-time display of all radiation heat map, watch staff can check the instantaneous temperature at any position of the picture through the mouse, record, take photos, analyze the abnormal situation, and issue professional report.

u Temperature tracking: high and low temperature tracking can automatically analyze the temperature rise trend of the whole image or specific area of the thermal image to find hidden areas in advance.

u High temperature trigger shooting and alarm: When abnormal temperature occurs, the monitoring background can find it in time. When the alarm is triggered, the acousmo-optic alarm module will emit an alarm sound and the software background will take pictures in the process of the incident.

u Temperature curve: The software can observe the real-time temperature curve of the temperature measuring object, so as to determine the trend.

u Timed storage: the data of thermal imaging images can be saved regularly for later analysis. Users can set the storage time interval by themselves and view the historical temperature curve of saved files, which is overwritten every six months.

u Data playback: Remote query and playback of front-end historical images.

u Custom alarm thresholds and levels: The system can define different alarm thresholds and levels to assist the staff to assess the urgency and development of hidden dangers.

u Automatic classification storage: monitoring data, abnormal data and alarm information will be automatically stored in the corresponding device data column, which can be quickly and accurately called for analysis.

u Report function: Various reports can be customized according to customer requirements, and can be exported to Word format.

u Fault self-diagnosis: the system can remind the personnel on duty when the terminal equipment fails.

u Automatic recovery: the device has the function of automatic detection and recovery of network interruption.