Abstract:
A device is described for a safety system on an installation in connection with the operation of a habitat (10) in which an object that is carrying out work which results in heat generation such as flames, sparks and the like, is isolated from the surroundings, and where an overpressure of air is set up in the habitat (10) to prevent ingress of flammable gases, and comprising systems for supply of electricity and overpressure air to the equipment inside the habitat, and also an alarm system which can warn of irregularities and the like. The device is characterised in that the safety system comprises a shut-down central (30) to which is connected a number of detectors (32-38) placed in or adjacent to the habitat, and that can register parameters such as gases, temperatures, changes in temperature, and also pressure conditions adjacent to or inside the habitat, and that the shut-down central (30) is arranged to shut down operation of the heat generating equipment when irregularities arise in the operation of the habitat.
Abstract:
An electrical fire indication detector for detecting a pre-fire condition in the electrical distribution connections caused by arcing as well as overheating of the connections. The detector (10) includes a plug (12) capable of being plugged into a wall outlet to be coupled to a power line, and an outlet (14) coupled to the plug by an internal wire for receiving a plug of a load appliance. Signal detection means (20-28) is electrically coupled to the plug (12) and detects a high frequency signal in the power line to output a high frequency data. Temperature sensor (30) detects a temperature of the power line to output temperature data. Control means (32) determines an outbreak of an arcing in the power line based on the high frequency data and determines an overheating of the power line based on the temperature data. Visual and/or audible alarms are provided when the arcing breaks out.
Abstract:
A computer network backbone system that provides integrated monitoring and damage assessment functionality. The system provides equipment and area monitoring functions for the purpose of detecting actual hazards and conditions that can lead to potential hazards. In the case of the detection of an actual hazard such as a fire or a gas leak, the system is capable of automatically triggering remedial measures such as cutting off power, releasing water or CO2 to combat a fire, shutting off gas valves, etc. In the case of a potential hazard, such as items becoming overheated, or a rising water level, or an abnormal vibration pattern, the system can sound alarms and alert operators to a potentially hazardous condition. The system is configurable to integrate a multitude of sensor devices that monitor and respond to a variety of different conditions into a single computer backbone for processing by a single control unit. A single user interface that can be operated by single operator simplifies the operation of the system.
Abstract:
Presented is a communications protocol for use by interconnected hazardous condition detectors, such as smoke and carbon monoxide detectors for use in dwellings and other structures. This communications protocol provides conventional signaling to indicate the presence of a smoke condition necessitating the generation of a smoke temporal pattern by all interconnected detectors. The protocol further defines a signaling method by which conventional smoke detectors that are incapable of providing temporal patterns other than that required for a smoke alarm condition will not be sent into an alarm mode of operation upon receipt of a signal other than the conventional smoke alarm signal. This communications protocol defines a pulsed signal to indicate a non-smoke alarm condition that is of a duration that will not trigger the conventional smoke alarms. To allow for the transmission of multiple hazardous conditions alarm notifications, as well as the transmission of additional hazardous condition detector control signals, the communications protocol utilizes a multi-bit signal transmitted via the conventional single signal I/O wire of currently existing interconnect wiring. Through the use of an 8 bit alarm signal, multiple hazardous conditions may be signaled as well as operating modes such as test, hush, reset, low battery, etc. Also presented are smoke, carbon monoxide, and combination hazardous condition detectors that utilize the communications protocol presented herein.
Abstract:
A flexible smoke generator comprising smoke composition particles embedded in an elastomer, preferably a silicone rubber compound that is molded or extruded into a relatively thin layer. The smoke generator may further comprise flexible circuitry to provide a currency alarm pack having the flexibility and feel of a standard currency pack without an alarm. The smoke composition particles may contain a red dye and/or tear gas. The smoke composition particles have a preferred particle size range small enough to pass through a number (18) sieve and large enough not to pass through a number (40) sieve. The smoke generator may be provided with a film covering, such as polyurethane, which may provide sealing capability for sealing the smoke composition particles and/or tear gas within the elastomer. The smoke generator may contain embedded reinforcing fibers for additional strength.
Abstract:
Method for the monitoring of storage temperature-time conditions of a product and temperature-time indicating device (1) for storage conditions. The present invention refers to a method for monitoring the perishable product storage conditions and, more particularly, to indicate the conditions of such storage as a function of the temperature and time of permanence of the product at that temperature. The present invention also relates to a temperature-time indication device (1) that operates according to this method.
Abstract:
The signals from an alarm, comprising at least one sensor (2, 3, 4), for monitoring characteristic hazard values and an analytical electronic unit (1), connected to the at least one sensor (2, 3, 4), are compared with pre-set parameters. Furthermore, the signals are analysed for repeated or regular occurrence and repeated, or regularly occurring alarm signals are classed as error signals. The classification of signals as error signals gives rise to a corresponding adjustment of the parameter. When an error signal arises, before the parameter is adjusted, the validity of the signal analysis for the at least one sensor (2, 3, 4) is checked and the parameter adjustment is carried out, depending upon the result of said validity check. An alarm with the means for carrying out said method comprises at least one sensor (2, 3, 4), for a characteristic hazard value and an electronic analysis unit (1), containing a microprocessor (6), for the evaluation and analysis of the signal from the at least one sensor (2, 3, 4). The microprocessor (6) has a software programme with an adaptive algorithm based on multiple solutions for the analysis of the signals from the at least one sensor (2, 3, 4).
Abstract:
Fire alarm for persons with impaired hearing including an activating smoke detector and a loudspeaker that is driven by a sound circuit including amplifier and a sound generating part. The sound generating part is so programmed that it delivers both square waves and sawtooth waves with different frequencies below or at 500 Hz. The result is a very powerful wobbling alarm sound that can be heard of the majority of persons with impaired hearing. In many cases also vibrations that are generated by the alarm can be "felt" in other ways than by hearing, in particular by different objects being oscillated.
Abstract:
The invention relates to a signaling fire detector comprising a sensor (10), said sensor having at least one conventional fire detecting sensor (12, 13), and comprising a control and analyzing unit (9). Said unit is connected to the sensor (10), is configured for analyzing the signal (S2, S3) supplied by the at least one fire detecting sensor, and is optionally configured for outputting at least one control signal (T1; T2) for the fire detecting sensor(s) (12, 13). The inventive signaling fire detector is characterized in that the sensor (10) additionally comprises a chemosensor (11) or a chemosensor array which is likewise connected to the control and analyzing unit (9) for analyzing a detection signal (S1), and which is configured based on a chemical sensor operating principle for detecting gas and/or smoke emissions produced by fire. The additional chemosensor is preferably an optoelectronic gas sensor which operates on the basis of an optode or is preferably an optoelectronic gas sensor array which also operates on the basis of an optode.
Abstract:
An electrical, battery-driven audiovisual fire detecting apparatus comprising a smoke/heat detector and a light gleam generating emergency light source electrically interconnected thereto, said source being adapted to generate gleaming or flashing light upon the release of the smoke/heat detector. Said apparatus is mountable outside a sleeping room door. The emergency light source is a flashlight source (20).