131results about "Fire alarm hydraulic/pneumatic actuation" patented technology

The present invention relates to a food contamination detector associated with a double bar code, given the trademark GILBAR.TM. by the owner of the present invention, that includes coded indicia used to identify the presence of conditions indicative of microbial contamination in food, including toxic contaminants, bacterial metabolites, and other microbial secretions. Of the two bar code symbols associated with the food contamination detector, the first identifies the food product in terms of the type of food, the quantity, the price and the like, while the second bar code symbol is designed to identify the presence of contaminants. When contamination is not detected, the first bar code symbol is scanner readable, whereas the second bar code symbol is not. Once contamination is detected, bars in both bar code symbols can appear or disappear causing the first bar code symbol to become scanner unreadable and the second bar code symbol to become scanner readable.

A multi-gimbal configured transition protectively interfaces a mooring and communication cable to a communication ocean buoy. The transition interface contains a segmented, flexible sheath formed of a plurality of pivotally interconnected gimbal rings having mutually adjacent interior apertures through which one or more communication link members pass. Successive gimbal rings are orthogonally pivotally interconnected with one another so as to make the flexible sheath flexible in three dimensions. Upper ends of one or more communication link members are connectable with a communication cable connection fixture of the buoy. Lower ends of the communication link members are connectable to communication cable terminal connectors of a terminal end of the mooring cable.

A flow sensor having an inlet and an outlet comprising: a plate moving in response to fluid flow therethrough, being displaced further as flow increases; a sensor for determining moving plate's position and creating an electronic signal related thereto; a biasing means for biasing the plate towards the sensor's inlet end. The sensor may include a sealing means for preventing flow therethrough until a specified differential pressure is reached allowing the device to be used as a bypass mechanism. The sealing means may also constitute a check valve means to prevent flow in an undesired direction. The check means comprises: a bullet rod adapted to be received within an orifice defined in a moving plate, such that the bullet rod prevents flow through the orifice until the moving plate is displaced past a terminal end of the bullet rod; and a plate means sealingly and slidingly received within a cylinder, which is closed for a portion of its length and open for another portion of its length, such that flow is prevented until the plate is displaced past the closed portion of the cylinder. The method using the sensor in multipurpose piping systems includes use of the apparatus in a system incorporating at least one fire sprinkler, the piping system also preferably providing at least one other use in the structure. The other use in the structure may be supplying domestic needs, or supplying heating/cooling water for a heating/air conditioning system.

A freeze resistant buoy system includes a tail-tube buoy having a thermally insulated section disposed predominantly above a waterline, and a thermo-siphon disposed predominantly below the waterline.

An automatic fire containment system is disclosed, together with certain components which may be used therewith. An embodiment of the system attempts to provide fire suppressant to regions surrounding a fire zone, thus containing the fire within limited area, but not flooding a larger area than necessary to contain the fire. Sprinklers which may be selectively automatically activated electrically, optionally in addition to common heat triggering, are also provided. Sensors may be embedded in the sprinklers. Further provided are sprinkler capable of reporting activation thereof via electrical state change. Further provided are devices to reduce installation costs and increase the resolution of firefighting and/or fire containment systems by providing wireless communications between network nodes such as flow switches, valve status switch, and individual sensors, sprinkler, and other ports, and a control panel/controller.

The present invention related to a management system with real-time interaction for environmental monitoring and a method thereof. The management system for environmental monitoring includes a server system, which includes a data processing apparatus and a first management apparatus. The data processing apparatus executes collecting and evaluating monitored data, and importing and exporting monitoring management criteria as well as analyzing and comparing the monitored data and the automatically adjusting the monitoring management criteria. The management system for environmental monitoring also includes a monitoring apparatus, which receives data of monitoring operations transmitted by the first management apparatus via a network, and transmits the monitored data produced in environmental monitoring to the first management apparatus. The data processing apparatus analyzes and compares the monitored data received by the first management apparatus for producing resultant analysis data to the first management apparatus. Thereby, the monitoring apparatus can receive real-timely the resultant analysis data transmitted by the first management apparatus.

A transmitter for measuring a process variable of an industrial process includes a sensor adapted to measure the process variable and to generate a sensor output. A mode selector is adapted to select between operational modes. At least one operational mode is related to an operational range of the sensor. Circuitry is adapted to compensate the sensor output according to the at least one operational mode and to generate a transmitter output representative of the measured process variable.

Provided is a security surveillance system and method capable of separately detecting fire and intrusion situations on the basis of a sound field variation, including a sound generating device outputting, into a set security surveillance space, a multi-tone sound wave formed of a linear sum of sine waves having a plurality of frequency components, a sound receiving device obtaining sound field information for each frequency represented as sound pressure and a phase from a sound wave received in the security surveillance space, and a sound field signal processing device storing sound field information for each frequency obtained from the sound receiving device in a preparation mode, comparing the stored sound field information with current sound field information for each frequency output from the sound receiving device in a surveillance mode, and determining occurrence of a security situation.

An odor-emitting port is provided in a housing member composed mainly of an inorganic material. An odorous material is contained in the housing member, and the odor-emitting port is sealed with a low-melting metal to constitute a heat-sensitive odor-emitting component. In this heat-sensitive odor-emitting component, as soon as the temperature of a heat generation site has reached a predetermined value, the low-melting metal is instantaneously melted down to open the odor-emitting port through which the odorous material contained in the housing member is immediately spread around the odor-emitting component. Therefore, the odor-emitting component is highly sensitive to temperature. Further, since the housing member is formed of an inorganic material, the long-term stability can be improved.

A monitor can sense the difference in temperature between the inside and the outside of an enclosure containing electrical power equipment. The monitor has a case adapted for mounting at the enclosure. Also included is a first and a second sensor for producing a first signal and a second signal, respectively. The first sensor is mounted at the case and is adapted for insertion through an opening in the enclosure. The second sensor is adapted to sense temperature at a location remote from the first sensor. Specifically, the case is mounted so that one of the sensors is inside the enclosure and the other is outside. The monitor also includes an alarm system mounted at the case and coupled to the first and the second sensor for producing a warning signal in response to the first and the second signals from the first and the second sensor signifying a temperature difference exceeding a predetermined threshold.

The invention discloses a safety monitoring device for an electric power Internet of Things. The safety monitoring device comprises a fireproof box, an alarm and a dry powder extinguishing device, thefireproof box is used for monitoring whether a fire occurs or not, and when the fire is monitored, the alarm is controlled to give an alarm, and the dry powder extinguishing device is controlled to spray dry powder to extinguish the fire. According to the safety monitoring device for the electric power Internet of Things, the fire situation of an equipment line for the electric power Internet ofThings can be discovered in time, and the fire can be alarmed and extinguished in time.

[Theme] To provide a device or a judging method for judging the type of liquid inside a container that can be applied to containers of various shapes and can be applied to cases where the remaining amounts of liquids in containers differ.

[Solution Means] This invention's device for judging the type of liquid inside a container is equipped with: a plate capacitor 1, wherein two plate electrodes 1a and 1b are positioned in opposing manner; a container supporting member 3, holding, in a region besides the region sandwiched between plate electrodes 1a and 1b, a non-conductive container 2 that can contain a liquid in its interior; an oscillation circuit 4, containing capacitor 1; and a control part 5, detecting the oscillation frequency of the oscillation circuit; and container supporting member 3 is arranged to adjust the distance from plate electrode 1a to container 2 in accordance with the size of container 2. Also, a third electrode 18, of the same electric potential as plate electrode 1b, is disposed in contact with a bottom part of container 2.

A sensor head/brew cup with liquid level sensor probes which rotate down into the server to avoid damage to the probes by the server. The sensor head/brew cup moves as a unit, thereby eliminating any gap between the brew cup and the sensor head through which the brewed liquid must pour, thereby preventing spillage. The moveable sensor head/brew allows beverage brewing devices to use servers of various heights. Raising the sensor head/brew cup causes the level sensor probes to rotate upward out of the server, thereby protecting the probes from impact by the server when it is removed from the brewing device. When the level sensor probes are in the upward position they touch electrical contacts completing a self-test circuit confirming electrical continuity through the level sensor probes.

In one aspect, a pneumatic detector assembly is provided. The assembly includes a housing, a sensor tube, a contact pin, and at least one switch having a bellows operatively associated with the sensor tube and the contact pin. The bellows is configured to move into and out of contact with the contact pin based on a pressure in the sensor tube.

The invention provides a dust explosion prevention integration system. The system comprises a main control unit, an explosion suppression system, an explosive-proof system, an explosion venting systemand a spark detection and fire extinction system. The explosive-proof system comprises a mechanical automatic explosive-proof system, a passive two-way explosive-proof valve and a passive one-way explosive-proof valve. The explosion venting system comprises an explosion venting sheet, a flameless venting device and a spring-type flameless venting valve. The main control unit is connected with theexplosion suppression system, the mechanical automatic explosive-proof system and the spark detection and fire extinction system and controls the explosion suppression system, the mechanical automatic explosive-proof system and the spark detection and fire extinction system, and the explosion suppression system and the explosive-proof system or the explosion venting system can be combined for use. The dust explosion prevention integration system mainly adopts the explosion suppression system, the mechanical automatic explosive-proof system, a two-way passive explosive-proof system, the explosion venting system and the spark detection and fire extinction system and adopts proper safeguard procedures for explosion prevention on the basis of existing danger zones with dust explosion and thelike.

An apparatus for shutting-off electrical appliances and electrical devices upon detection of an audible alarm issued by a separate fire alarm. The separate fire alarm device generates an audible warning upon detecting fire. The shutting off device make use of these ever improving ubiquitous fire alarms to greatly reduce the cost and complexity of providing a power shut-off response in the case of fire. The shut-off device includes a switch to interrupt electrical power to an appliance, the switch is activated by a microphone for detecting an audible alarm.

The invention relates to a multi-channel tubular linear temperature sensing fire detector which is characterized in that a detection circuit is connected with a current collector via a common joint; two common terminals of the current collector respectively are connected with input terminals of a metal gas pump and a pressure sensor; the other terminal of the pressure sensor is connected with a reference chamber; the pressure sensor is connected with a CPU via a first circuit; the CPU is connected with a multi-channel signal output terminal via a third circuit, and with a linear stepped micromotor via a second circuit; and a pressure emulation generator and the current collector are disposed on a mounting plate which is fixed in a box body. The invention can be used for early detecting overtemperature of various industrial devices or articles in a harsh environment, monitoring abnormal temperature due to spark, self-combustion, etc. and combining with an automatic fire extinguishment system. Alarm temperature, temperature raising rate and sensitivity of the fire detector can be set and regulated. The invention has the advantages of reduced engineering device numbers, increased protection area, lowered device investment, and reduced artificial mounting cost.

A pneumatic pressure detector for a fire alarm system includes a housing having an internal surface defining an interior volume. Also included is an alarm switch located within the interior volume of the housing and comprising a first deformable diaphragm responsive to an increase in pressure of a gas disposed in a sensor tube to indicate an overheat condition. Further included is an integrity switch located within the interior volume and comprising a second deformable diaphragm disposed in contact with an electrical contact during pressurization of the gas within a predetermined pressure range and in an electrically open condition when the pressure of the gas is less than the predetermined range. Yet further included is a mica sleeve located within the interior volume of the housing and disposed along at least a portion of the internal surface of the housing to insulate the alarm switch and the integrity switch.

The invention relates to the technical field of fire fighting equipment, and discloses an alarm type fire proof door with high fire resistance. The alarm type fire proof door with the high fire resistance comprises a fire proof door body, a door lock fixedly installed in the middle of one side of the fire proof door body and a door closer fixedly installed at the top of the fire proof door body. Aheat absorption tank is formed in the inner bottom of the fire proof door body, the heat absorption tank is filled with non-combustible liquid heated to produce gas under atmospheric pressure, a plurality of supporting rods are arranged in the heat absorption tank, a vertical gas guide pipe is arranged at the position, located above the heat absorption tank, in the fire proof door body, and a horizontal jet groove is formed in the position, located above the air guide pipe, of an inner cavity of the fire proof door body. According to the alarm type fire proof door with the high fire resistance, by forming the heat absorption tank at the inner bottom of the fire proof door body and filling the heat absorption tank with the non-combustible liquid heated to produce the gas, the bottom of thedoor can be heated and vaporized to have heat absorption performance when a fire occurs, the fire resistance duration can be prolonged on the basis of existing fire proof door materials, and the fireresistance of the fire proof door can be improved effectively.