Abstract: An event notification system includes a wireless device, an Access Point device, a server, and a user application. The server is configured to receive a plurality of heartbeats from the wireless device and through the Access Point device, and send a heartbeat response of a plurality of heartbeat responses in response to a respective heartbeat of the plurality of heartbeats. The user application is configured to send enable and disable commands to the server. The enable command is sent to the wireless device as part of the next heartbeat response of the plurality of heartbeat responses. The disable command is sent to the wireless device after the server receives an event condition from the wireless device through the AP device.

Abstract: A combined HVAC and fire suppression system includes a HVAC apparatus and a fluid outlet for release of heat exchange fluid into a discharge plenum of the HVAC system. The heat exchange fluid is a clean agent, such that release of the heat exchange fluid into the discharge plenum provides a fire suppressant effect for a conditioned space. The HVAC apparatus includes a network of piping holding a heat exchange fluid and arranged for chilling the heat exchange fluid via a chiller connected to the piping; a fan coil unit connected to the network of piping, the fan coil unit includes a coil for passage of the heat exchange fluid chilled by the chiller, a fan for movement of air over the coil in order to transfer heat from the air to the heat exchange fluid in the coil, and the discharge plenum.

Abstract: A security system includes a security panel operable to communicate with a support site via a lightweight binary-based protocol to echo a security panel user interface with the support site. A method of communicating with a security system including communicating with a support site via a lightweight binary-based protocol to echo a security panel user interface at the support site.

Abstract: An oscillator circuit includes an oscillator transistor (Q1) having respective first, second, and control terminals, the oscillator transistor being arranged to generate a microwave oscillating signal at the first terminal. A surface integrated waveguide resonator (Y1) is connected to the second terminal of the oscillator transistor (Q1). An active bias circuit portion (202) including a negative feedback arrangement is between the first terminal of the oscillator transistor (Q1) and the control terminal of the oscillator transistor (Q1), the active bias circuit portion being arranged to supply a bias current to the control terminal of the oscillator transistor (Q1). The bias current is dependent on a voltage at the first terminal of the oscillator transistor (Q1) multiplied by a negative gain.

Abstract: A radar detection system can be calibrated by a method which includes selecting location indicators with corresponding locations. A transmitter of a sensor emits a radar signal to the location of each of the location indicators. The radar signal is reflected off of a target at the location of each of the location indicators. The radar signal which has been reflected off of the target is received with a receiver of the sensor. The location of the target at each of the location indicators is communicated between the sensor and a controller. Locations which define a protected region are selected with the controller. The controller designates the protected region, thereby calibrating the radar detection system such that the radar detection system is capable of detecting an object in the protected region. The calibrated radar detection system can detect targets in an operational mode.

Abstract: A method of operating a secure wireless network between a master controller and a secure device is provided. The method comprising: detecting at least one of a NONCE-GET and a NONCE-REPORT using a sniffer configured to detect wireless signals from a selected wireless protocol; determining that the NONCE-GET was not transmitted by a master controller or that the NONCE-REPORT was not in response to a NONCE-GET transmitted by the master controller, the master controller being in electronic communication with the sniffer; and transmitting a new NONCE-GET to the secure device from the master controller.

Abstract: A method of provisioning a headless device includes the steps of acquiring credentials for a user application, then placing the headless device in a provisioning mode. Once in the provisioning mode, characters associated with the credentials are displayed by the user application, then the characters are read by an optical character reader (OCR) of the headless device, thereby allowing the headless device to join a network associated with the credentials.

Abstract: A security system includes a sensor configured to detect a distance to an object along a direction in an area; an alarm panel in communication with the sensor; at least one of the sensor and the alarm panel configured to determine a state of the object in response to the distance to the object along the direction.

Abstract: An elliptically or circularly polarized microstrip antenna. The antenna includes a substrate, a conductor arranged on a first side of the substrate, and a ground plane. The conductor includes a first antenna extending generally in a first direction, and a second antenna extending generally in a second direction, wherein the second direction is orthogonal to the first direction. The second antenna is connected to the ground plane via one or more electrical components including one or more resistors, one or more inductors and/or one or more capacitors.

Abstract: An oscillator circuit includes an oscillator transistor (Q1) having respective first, second, and control terminals, the oscillator transistor being arranged to generate a microwave oscillating signal at the first terminal. A surface integrated waveguide resonator (Y1) is connected to the second terminal of the oscillator transistor (Q1). An active bias circuit portion (202) including a negative feedback arrangement is between the first terminal of the oscillator transistor (Q1) and the control terminal of the oscillator transistor (Q1), the active bias circuit portion being arranged to supply a bias current to the control terminal of the oscillator transistor (Q1). The bias current is dependent on a voltage at the first terminal of the oscillator transistor (Q1) multiplied by a negative gain.

Abstract: A method of registering distributed devices includes discovering a plurality of devices at a central panel or server, localizing the devices, and authorizing the devices with a mobile device communicating with the central panel or server. The method also includes registering the devices with the central panel. The model can include verifying link quality with each of the devices before registering the devices with the central panel by comparing signal quality between each device and a central panel with a pre-defined threshold level.

Abstract: A presence detection system and a method for detecting presence using a low-cost radar are provided. The method including a step for emitting a transmitted signal including repetitions of a transmitted signal from a transmitting antenna. The method includes a step for receiving, at one or more receiving antennas, a received signal including a combination of a plurality of reflections of the transmitted signal. The method includes, for each received signal, a step for processing the received signal to determine whether a threshold has been exceeded. When the received signal exceeds the threshold, determining presence due to a motion from a moving body. When the received signal does not exceed the threshold, measuring a periodicity of the received signal to determine whether periodicity of the received signal is within a vital range, determining presence due to a vital sign when the periodicity is within the vital range.

Abstract: An Internet of Things architecture includes a gateway, a first dongle, a first wireless device, and a cloud platform. The gateway includes a first serial port. The first dongle is received by the first serial port, and is configured to communicate using a first communication technology. The first wireless device is configured to communicate a first coded message to the first dongle using the first communication technology. The cloud platform includes a network abstraction layer that includes a first communication technology module configured to receive the first coded message associated with the first communication technology and output a first decoded message.

Abstract: A radar system and a method for operating a radar system are provided. The radar system includes a first radar component, a second radar component, a processing unit, and a controller. At least one of the first radar component and the second radar component are configured to transmit at least one monitoring wave. At least one of the first radar component and the second radar component are configured to receive at least one reflected wave. Each of the first radar component and the second radar component have an active mode and a passive mode. The processing unit is configured to process at least one reflected wave signal received from at least one of the first radar component and the second radar component. The controller is configured to control (e.g., switch between active mode and passive mode) at least one of the first radar component and the second radar component.

Abstract: An event notification system includes a wireless device, an Access Point device, a server, and a user application. The server is configured to receive a plurality of heartbeats from the wireless device and through the Access Point device, and send a heartbeat response of a plurality of heartbeat responses in response to a respective heartbeat of the plurality of heartbeats. The user application is configured to send enable and disable commands to the server. The enable command is sent to the wireless device as part of the next heartbeat response of the plurality of heartbeat responses. The disable command is sent to the wireless device after the server receives an event condition from the wireless device through the AP device.

Abstract: An event notification system includes a wireless device, an Access Point device, a server, and a user application. The server is configured to receive a plurality of heartbeats from the wireless device and through the Access Point device, and send a heartbeat response of a plurality of heartbeat responses in response to a respective heartbeat of the plurality of heartbeats. The user application is configured to send enable and disable commands to the server. The enable command is sent to the wireless device as part of the next heartbeat response of the plurality of heartbeat responses. The disable command is sent to the wireless device after the server receives an event condition from the wireless device through the AP device.

Abstract: A method of registering distributed devices includes discovering a plurality of devices at a central panel or server, localizing the devices, and authorizing the devices with a mobile device communicating with the central panel or server. The method also includes registering the devices with the central panel. The model can include verifying link quality with each of the devices before registering the devices with the central panel by comparing signal quality between each device and a central panel with a pre-defined threshold level.

Abstract: A security system includes a sensor configured to detect a distance to an object along a direction in an area; an alarm panel in communication with the sensor; at least one of the sensor and the alarm panel configured to determine a state of the object in response to the distance to the object along the direction.

Abstract: A method for implementing an image data communication protocol by a panel is provided. The panel is communicatively coupled over a wireless network to alarm sensors and image sensors. The panel requests, under the image data communication protocol, image data from the image sensor by sending an image request packet to the image sensor. The panel receives, under the image data communication protocol, image data as an image data packet from the image sensor.

Abstract: Embodiments include a system and method for tracking individual user health using intrusion detection sensors. The embodiments include a processor module, and one or more sensors of an intrusion detection system configured to measure one or more metrics of users, the one or more sensors are configured to operate in a first mode and a second mode, where the processor module is operably coupled to the one or more sensors. The embodiments also include one or more devices operably coupled to the processor module to identify the users, a health profile having a user profile including one or more metrics from the one or more sensors and user identifiers from the one or more devices, and a transmitter coupled to the processor module configured to transmit notifications based at least in part on a detection associated with the one or more metrics.