GB2496374A

GB2496374A - Cargo protection system

Info

Publication number: GB2496374A
Application number: GB1118630.1A
Authority: GB
Inventors: Brian Eh Oon
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-27
Filing date: 2011-10-27
Publication date: 2013-05-15
Also published as: GB201118630D0

Abstract

A portable intruder detection system is disclosed comprising a transmitter having a sensor system, and a receiver having an audible / visual alerting means. The sensor system comprises multiple sensors which are cross correlated in order to reduce false alerts. Upon detection of an intruder by the sensor system, the transmitter communicates with the receiver in order to warn a user to the presence of an intruder. The communication may be via SMS. The sensors may include sound, infrared, microwave and CO2 detectors.

Description

INTELLECTUAL

*.. . PROPERTY OFFICE Applicalion No. GBI 118630.1 RTM Dare:15 February 2012 The following terms are registered trademarks and should be read as such wherever they occur in this document: Zigbee Intellectual Properly Office is an operaling name of Ihe Patent Office www.ipo.gov.uk

Patent Specification

Internal Portable Cargo Protection Device.

This is a tailored multi sensor portable device for detecting the presence of unwanted intruders within any load area. With its two levels of redundancy and cross checking, the number of false alerts is minimal its electronic Cpu enables it to use a process called SSP (Smart Sensor Protocol) with a final resulting SMS and phone call to alert user when triggered its wireless modems uses duplex packet serial data to monitor the operation of the device as well feedback of possible failures. Trigger data is stored and can be downloaded wirelessly to any computer with the right protocol and password.The process using RF Id and Zigbee technology has also been incorporated within the circuit and can be turned on with a simple CPU flash. The receiver part has a range of lOOM and can be carried anywhere within range but would be normally be docked close to the container. Arming the unit is done by SMS message or small remote control.The use of a forward and reverse motion detector will enable cu to determine whether the transmitter is moving or stationary. The audio sensor will only be activated then the transmitter is still.

A more advanced version offers 36 Video/ Audio via SIM card.

Pinhole Lens and Night Vision Technology is incorporated. The user can record onto a micro SD card and view in real time both video & audio via any 3G Mobile Phone. The advanced video motion detection system will auto record alerts and send out SMS to user.

A series of magnets are fitted to the rear of the case so it can be attached to any bulkhead within seconds and screw holes are provided for a more permanent fixing.

SSP uses multiple inputs to determine whether a genuine alert is present before informing the user. Pre defined footprint values are stored within the memory of the CPU. Only when two inputs within the sensor footprint respond does the Cpu take it to level two. The audio part is only active when the sensor unit is stationary and is finely tuned to only pick up unusual sounds. The Accelerometer is made up of three resonators attached to the metal case and is tuned to certain frequencies only. The radial part is made of brass with the resonators attached to the barrel. A field effect transistor is used to amplifier the signal and the output is interpreted using a series of complex algorithms by the CPU and compared to values stored within the firmware of the processor. This is called Acoustic Dynamic Memory (ADMJ The carbon dioxide device require no fan and uses lnfa Red technology to detect levels, it will only be active for 40 seconds at a time as is controlled at will by the CPU program. Its sole purpose is a reference check. The Cpu is able to calibrate the Carbon Dioxide device and monitor its correct operation.

The sensor operation is automatically adjusted according to conditions and will compensate for wear as well as abnormally high background levels. Without this level of sophistication, the use if C02 to measure is almost useless as certain goods emit C02 naturally as with any fuel powered vehicle. Its use of theiR band to detect rather than the standard heater version gives an extremely quick and accurate reading. The CPU is able to detect sensor failure and report via SMS immediately.

Acoustic Dynamic Memory (ADMJ The device uses highly tuned resonators and will only respond to certain frequencies within the audio spectrum its memory map contains pre defined parameters. The resonators are placed within a ring and a voltage increases sensitivity.

Xband sensor has the ability to pick up certain objects and can be programmed to ignore others. Its major benefit is the ability to penetrate solid objects.

The wireless modems can operate on any of the following frequencies.315MHz, 433MHz or 900Mhz.

Fig 1-4 shows the construction and breakdown of various items.

The heart of the device is a RISC processor with a clock speed of 20Mhz. The inputs use various gates with multiple serial lines and the internal voltage line is SY DC. The processor is programmed to go to sleep to conserve battery life and is triggered on by the sensors. It also can is programmed to wake up after sometime of inactivity to check all is well. The memory onboard can store data from all of the sensors and can be downloaded via RF id or Zigbee.

The metal cabinet of the transmitter has been designed to act as a echo chamber and the metal work of the container is used to conduct noises back to the resonator.

The use of Magnets enables the unit to be attached to metal work within seconds and be operational within 5 mins.

The unit is battery operated with the facility to connect an external DC, so will be suitable for all sorts of loads even containers where there is no power. There are two parts to this device, a wireless transmitter and a receiver.

The transmitter contains the sensor system and the receiver sends out the warning visually and audibly.The range of the wireless system is lOOM giving protection within the range for any load. More than one transmitter box can be uniquely coded to the receiver if the load area is large.

Being a portable unit it can be transferred very easily and used where needed.

The unit make use of highly tuned audio accelerometer a PIR, Xband or C02 monitor to cross reference the presence of any intruders.

Process of Detection.

Depending on the use of the device,it can be configured in any number of sensor combinations.

Microprocessor controlled sensors are able monitor and determined what is present thus cutting down the number of force alerts. The microprocessor is able to switch on and off each sensor at will and can calibrate the IR C02 sensor to eliminate drift and detect normal levels of C02 as well as factoring in fuel driven exhaust vehicles.

This multi sensor system uses audio, movement and gas to monitor the surrounds and the electronics is able to use preset reference value to make sure that false triggering is kept to a minimum.

Technology The system uses advanced 2 way Packet based codes. Both receiver and transmitter are in constant communication with each other via wireless digital communication. The process data is stored and can be used to give full diagnostic monitoring with warning lights should any fault be detected. The receiver device can be placed in the cab in the case of vehicle. When triggered by the transmit side, will sound an alarm alert and a red LED will light up to warn the driver.

An Anti Tamper switch has been fitted to protect the transmitter side should someone decide to try to remove the box. Any number of transmitter boxes can be setup inside the load and each one has unique codes so no other receiver box will pick up the signal.

Fig 9 shows the 36 Version with PIR and Audio sensor. Live video is only a phone call away and the recording section is capable of 6900 mins using a 46 micro SD card. The Video motion detection can be programmed to send out SMS alerts with warnings of low battery and intruder.

Battery 101 Metal Enclosure P65 102 C02 Sensor 103 X Band module 104 PrInted Circuit Board Antenna 106 Rubber Gasket 107 Sound Accelerometer 108 Anti Tamper Switch 109 Forward & Reverse Switch MagnetBehind 111 Magnet Front Fig 2 605 C02 Sensor 602 X Band Sensor 603 IRSensor FIg 3 LED (set) 201 LED (alert) 202 Status 203 DCin 204 SMS Card 205 Buzzer 206 Antenna (GSM) 207 Antenna F1g4 112 C02 Sensor 113 IRSensor 114 LEO (see) LED (alert) 116 Magnet 117 Magnet 118 Accelerometer 119 Tamper Switch MotIon Sensor 121 0Cm 122 Screw 4mm Fig S 601 Screw 4mm F1g7 400 Receiver 401 Holder Fig B 301 Arns Button 302 DIsarm Button FIg 9 701 Signal LIghts 702 PIn Hole Camera 703 IRSensor 704 LED 705 Antenna 706 NIght VisIon LEDs 707 Reset Fig 10 Block Diagram of System