One element of the security system is the mobile security device (MSD) installed directly inside the secured container. MSD's primary task is continuous status monitoring of container and its cargo. Besides, at specified time intervals MSD determines the geographical coordinates of the container and sends information about its status, location, and alarm events occurred, to the system database. Additionally, MSD can control actuators inside the container, either automatically or under operator's command.
MSD's main element is the processor module that includes sensor unit, computing and control circuitry, and GPRS modem. Additional sensors and actuators can also be connected to the processor module.
The sensors are designed to monitor the status of container and cargo. The composition of sensors may vary, depending on the characteristics of cargo, specifics of container service, and particular requests of the customer.
The sensor unit enables MSD to record different types of alarm events, such as the following.
1. Container unauthorized handling:
- attempts for container break-in by various means;
- penetration of container interior;
- deviation of the container from the scheduled shipping route.
2. Disturbances of cargo shipping conditions:
- intense shocks, impacts and tilts;
- extreme temperature and humidity inside the container;
- displacement of cargo inside the container during shipping.
3. Emergency events:
- fire;
- container flooding.
For processing of signals from the sensors, the MSD processor module implements a proprietary algorithms for data processing and making decisions about the status of container and cargo. The developed algorithms minimize the chance of generation of false alarms caused by accidental triggering of sensors. In addition, the algorithms enable the MSD to generate control signals for the actuating devices autonomously, without unnecessary communications to the operator.
Data exchange between the MSD and the information system server is performed in GPRS format, via wireless channels of cellular communication networks. By special request, the MSD can be augmented to include equipment for satellite communication.
The MSD also includes power supply unit. Proprietary data processing approaches and communications algorithms reduce the overall MSD power consumption and guarantee extended periods of self-contained operation (optional 1, 3 and 5 years), using compact and low-cost battery cells. By customer request, the period of self-contained MSD operation can be increased beyond 5 years. The lifetime depends also on the number of updates per day.
In order to establish communication, a combined GPS/GPRS antenna is connected to the processor module.
Currently, Kirsen Global Security offers two standard MSD designs:
- A relatively simple and low-cost 400 Series model, which meets the requirements of the vast majority of customers. This model has the processor module containing a limited set of internal sensors (temperature, motion, intense shocks and tilts) and one external door opening sensor. 400 Series model does not allow for connection of additional external sensors and actuators; Download datasheet (pdf, 107KB)
- MSD 500 Series model. This model features augmented array of sensors in comparison with the 400 Series, as well as an option to connect additional external sensors and actuators; Download datasheet (pdf, 123KB)