36results about "Burglar alarm actuation by fluid pressure change" patented technology

A container security device comprises a sensor and a local memory configured to store input from the sensor, wherein the device is configured to detect a breach of a container. A container security method comprises the steps of detecting a change in a measurement value inside a container, and indicating a breach if a change in measurement value exceeds a threshold. A method of determining if a container was breached comprises the steps of downloading a log of gathered information, and checking the gathered information for any abnormalities, wherein the gathered information includes at least one sensor measurement taken from the inside of a container. A device for maintaining security of a navigation receiver unit comprises an enclosure, comprising a sensor, a processor, a local memory configured to store input from the sensor, and a navigation receiver unit, wherein the device is configured to detect a breach of the enclosure.

Methods for remote detection of humans can include the step of transmitting vertically polarized electromagnetic signals into an area of interest (AOI) when no humans are present. A first time domain measurement of return response signal energy from the AOI can be accomplished to establish a background signal. A second time domain measurement of response signal energy from the AOI can be made when at least one human is present, to establish a background-plus-human signal. The two signals can be subtracted to yield a reference time domain human signal. The electromagnetic signal is periodically re-transmitted. The background subtracted from subsequent response energy, and the result compared to the reference time domain human signal. A visual or audible indication occurs when the resulting signal matches the reference signal. Fast Fourier Transforms (FFT) of the time domain signals can be used to yield frequency responses, which can be monitored.

The present invention can be generally described as a blade monitoring and wireless communications system. This monitoring and communications system is formed by the integration of commonly available or easily developed hardware and/or software components, which may be controlled by non-proprietary, open architecture software. This allows the present invention to easily incorporate a variety of sensors and/or detectors; thereby, providing the user with the first blade monitoring system capable of providing an improved blade monitoring capability.

Apparatus for detecting the breaking of a contact-sensitive surface includes an acoustic, shock, and vibration transducer, a detector circuit responsive to the transducer for detecting an acoustic wave resulting from a contact force applied to the surface and generating a signal, a support for the transducer, and the means for disqualifying a contact force to the support as a breakage event that relies on differentiation of the speed with which a shock wave travels through a solid material versus the speed with which an acoustic wave travels through air. The transducer may include a front electret condenser microphone and in some preferred embodiments the microphone does not have a preamplifier associated therewith. The invention also includes the method for detecting the breaking of a contact-sensitive surface that includes providing an acoustic, shock, and vibration transducer, providing a support for the transducer, providing a detector circuit responsive to the transducer for detecting an acoustic wave resulting from a contact force applied to the surface and generating a signal; and providing means for disqualifying a contact force to the support as a breakage event that relies on differentiation of the speed with which a shock wave travels through a solid material versus the speed with which an acoustic wave travels through air.

A portable security system for detecting and annunciating intrusion into enclosed confines includes a hollow enclosure and a frame which is engageable with the hollow enclosure for concealing it from direct view. A controller is mounted within the hollow enclosure and is operably coupled to a source capable of supplying electrical power. A pressure sensor is mounted within the hollow enclosure in electric communication with the controller and is operable to generate an intrusion signal upon detecting an intrusion condition into such enclosed confines, whereby the controller, when being armed, is responsive to receipt of the generated intrusion signal to generate an annunciation signal annunciating the intrusion condition.

A security alarm device of the present invention detects change of indoor pressure and converts the change to electric signals (more particularly, voltage signals) with a variety of frequencies by using a sensor unit installed therein, particularly sensing a low frequency that is generated when the door opens among other converted electric signals. Then, when the electric signals corresponding to the low frequency turned out to be caused by intrusion of the object from the outside, the device immediately sound an alarm to notify the intrusion to a user in a remote place. According to the security alarm device and the method thereof, the intrusion of the object from the outside is sensed as the electric signals of the low frequency, and notifies the intrusion to the user to alarm the security.

A theft-proof packaging system includes a product package having a compartment configured to encapsulate a product, wherein the compartment is pneumatically pressurized above a surrounding environment. A pressure sensor assembly is located within the compartment. The pressure sensor assembly includes a pressure sensor, a power source electrically connected to the pressure sensor and a transmitter electrically connected to the power source. The transmitter is configured to send a signal. A receiving unit is located outside the compartment of the product package and disposed remote from the product package. The receiving unit includes a receiver configured to receive the signal from the transmitter and an alarm electrically coupled to the receiver. The pressure sensor assembly is configured to detect a change in pressure inside the compartment and then send the signal to the receiving unit activating the alarm.

A modular wall paneling system includes at least two plates. Each plate defines a longitudinal length, and each plate has a plurality of fixture apertures disposed through the plate along the longitudinal length. Each plate has a plurality of panel apertures disposed through plate along the longitudinal length. The plurality of fixture apertures are generally parallel to the plurality of fixture apertures. Included are a plurality of panels, each panel having a panel substrate and each panel having at least two hooks disposed on a backside of the panel substrate. Each of the at least two hooks are configured to removably lock into the panel apertures of the at least two plates.

A sensor-transmitter (20) intended to be fastened to a mobile structure (11, 13, 14) and to transmit a security signal in a home automation installation (10), comprising, in a casing (22, 23): an autonomous power source (36), a vibration sensor (33), a wireless transmitter (35) and a processing logic unit (34) analyzing the signals obtained from the vibration sensor to decide whether to transmit the security signal by the wireless transmitter, which comprises means (27, 32) of detecting the mechanical state of the casing, the sensor-transmitter being:

• • in an operational state when the casing is closed and fastened to the mobile structure, the transmission of a security signal being enabled in this operational state, and
  • in a disabled state otherwise,
    • the transmission of a security signal being prohibited in this disabled state, whereas the transmission of other signals remains possible, or
    • the transmission of a security signal being enabled in this disabled state, the security signal being disabled by a disabling signal.

A noise reduction apparatus is mounted in a container data center. The container data center includes a container and a number of servers mounted inside the container. The noise reduction apparatus includes a first sensor, a number of fan adjusting systems, and a number of temperature sensors. The first sensor is mounted at an entrance of the container. When a user enters the container, the first sensor outputs a first control signal. The fan adjusting systems slow down fans in the servers according to the first control signal. When the user leaves the container, the first sensor outputs a second control signal. The fan adjusting systems speed up the fans according to the second control signal. The temperature sensors sense temperatures inside the servers respectively. The fan adjusting systems further speed up the fans when the temperatures exceed a preset temperature.

We disclose a window blind that includes a security feature. The disclosed window blind includes a plurality of slats, at least one of which includes a hollow core. The hollow core includes at least one pressure sensor, a controller, and a battery. The pressure sensor detects a change in pressure when an adjacent window or door is opened or broken. The controller may be connected to the pressure sensor and to multiple light fixtures and/or audio speakers throughout the building. Program code in the controller may receive instructions which include a defined order in which the controller sends a signal to each of the light fixtures and audio speakers causing them to actuate.

An intrusion alarm system in which intrusion into an protected space is detected as a variation in air pressure. The variable pressure detector uses a membrane and a displacement detector. One side of the membrane is exposed to the protected space and the opposite side of the membrane is enveloped by an enclosure with a limited pressure coupling to the protected space. A signal from the displacement detector is analyzed by a processor to identify rapid changes in air pressure to activate the security alarm. The same type of a variable pressure detector may be used to control electric lights and other devices in response to people entering into a room.

A theft-proof packaging system includes a product package having a clear compartment configured to encapsulate a product that is pneumatically vacuumized below a surrounding environment. A pressure sensor assembly is located within the compartment, the pressure sensor assembly including a pressure sensor, a power source electrically connected to the pressure sensor, and a transmitter electrically connected to the power source. The transmitter is configured to send a signal and a receiving unit located outside the compartment of the product package and disposed remote from the product package receives said signal and sounds an alarm. The pressure sensor assembly is configured to detect a change in pressure inside the compartment and then send the signal to the receiving unit activating the alarm. A passive RFID tag is located within the compartment and configured to be detected when it passes through a walk-through scanner activating a second alarm.

A container security device comprises a sensor and a local memory configured to store input from the sensor, wherein the device is configured to detect a breach of a container. A container security method comprises the steps of detecting a change in a measurement value inside a container, and indicating a breach if a change in measurement value exceeds a threshold. A method of determining if a container was breached comprises the steps of downloading a log of gathered information, and checking the gathered information for any abnormalities, wherein the gathered information includes at least one sensor measurement taken from the inside of a container. A device for maintaining security of a navigation receiver unit comprises an enclosure, comprising a sensor, a processor, a local memory configured to store input from the sensor, and a navigation receiver unit, wherein the device is configured to detect a breach of the enclosure.