Abstract: Beacon systems include a beacon including a transmitter, a processor, and a sensor for collecting sensor data, wherein the beacon broadcasts a beacon message comprising informational data based on a value of the sensor data and data regarding a minimum received signal strength for the relevance of the beacon message. The beacon system may include a receiving device, wherein the receiving device comprises a processor and an alarm adapted to be triggered by the beacon message, wherein the processor determines a relevance of the beacon message by comparing the minimum received signal strength for the relevance of the beacon message to an actual received signal strength of the beacon message, wherein, if the actual received signal strength is greater than or equal to the minimum received signal strength, the receiving device is within a range of relevance and the alarm is triggered.

Abstract: A static memory device including an instrument, a wireless radio, a shared memory, an outgoing memory portion and an incoming memory portion. The instrument includes an environmental sensing device, a hazard detection device, and/or an industrial safety device. The wireless radio sends and receives information on a wireless mesh network. The shared memory is connected to the instrument and wireless radio and includes static message memory having static messages related to the instrument. The outgoing memory portion receives outgoing information from the instrument and transmits the outgoing information to the wireless radio for transmission on the wireless mesh network. The incoming memory portion receives incoming information from the wireless radio and transmits the incoming information to the instrument. The shared memory restricts the wireless radio and the instrument from both raising grant lines and granting data to either the incoming memory portion or the outgoing memory portion simultaneously.

Abstract: Disclosed is a tangible article of manufacture having instructions stored thereon that, when executed, cause a machine to perform operations for tracking an operator and operator status using a safety device. The operations include programming a plurality of NFC tags with assignment information, wherein the assignment information is at least one of a location assignment for NFC tags being placed at particular locations and an instrument operator assignment for NFC tags distributed to multi-gas detection instrument operators. The instructions further include receiving temporary assignment information at the safety device when an NFC radio of the safety device is brought in proximity to at least one of the plurality of NFC tags; and tagging safety device data with the temporary assignment information.

Abstract: A monitoring system may include a module configured to couple to a base. The module may include a memory configured to store a firmware application and data, a processor operably coupled to the memory and configured to execute firmware to control the monitoring system, a wireless communication transceiver configured to allow communications between the module and other modules external to the monitoring system, and at least one sensor. The monitoring system is operable to monitor data measured via the at least one sensor and provide monitoring and alarm functions. The module is replaceable separately from the base, which has a shape generally resembling a safety cone.

Abstract: A system including a plurality of network devices including one or more worker monitoring devices and one or more area monitoring devices is provided. The plurality of network devices monitor at least one of a peer alarm, a worker biometric datum or an area environmental datum. The plurality of network devices are structured to communicate with one another in an ad-hoc wireless mesh network. A first network device of the plurality of network devices transmits the at least one peer alarm, worker biometric datum or area environmental datum for presentation on a second network device of the plurality of network devices.

Abstract: Beacon systems include a beacon including a transmitter, a processor, and a sensor for collecting sensor data, wherein the beacon broadcasts a beacon message comprising informational data based on a value of the sensor data and data regarding a minimum received signal strength for the relevance of the beacon message. The beacon system may include a receiving device, wherein the receiving device comprises a processor and an alarm adapted to be triggered by the beacon message, wherein the processor determines a relevance of the beacon message by comparing the minimum received signal strength for the relevance of the beacon message to an actual received signal strength of the beacon message, wherein, if the actual received signal strength is greater than or equal to the minimum received signal strength, the receiving device is within a range of relevance and the alarm is triggered.

Abstract: A system including an instrument node and a wireless mesh network having an encryption key is provided. In response to receiving a scan mode message from the instrument node, the wireless mesh network is operative to transition into a scanning state wherein the wireless mesh network listens on a primary channel for a boPeep message from another wireless mesh network having the same encryption key. In response to receiving the boPeep message, the wireless mesh network generates and queues for receipt by the instrument node a network information message identifying one or more properties of the another wireless mesh network. In response to receiving the network information message, the instrument node joins the another wireless mesh network.

Abstract: A method of providing information about a leader node to a plurality of follower nodes in a wireless mesh communication network is provided. The method includes designating the leader node; designating the plurality of follower nodes; and designating one or more predetermined frequency ranges as a public channel. The method further includes from the leader node and during a plurality of network intervals having a predetermined length of time, transmitting a sync message at a beginning of each network interval to the plurality of follower nodes. The method further includes during each network interval in which a sync message is received by any one of the plurality of follower nodes, transmitting from any of the plurality of follower nodes receiving a sync message, on the public channel, a message advertising at least one property of the leader node after receipt of the sync message.

Abstract: A static memory device including an instrument, a wireless radio, a shared memory, an outgoing memory portion and an incoming memory portion. The instrument includes an environmental sensing device, a hazard detection device, and/or an industrial safety device. The wireless radio sends and receives information on a wireless mesh network. The shared memory is connected to the instrument and wireless radio and includes static message memory having static messages related to the instrument. The outgoing memory portion receives outgoing information from the instrument and transmits the outgoing information to the wireless radio for transmission on the wireless mesh network. The incoming memory portion receives incoming information from the wireless radio and transmits the incoming information to the instrument. The shared memory restricts the wireless radio and the instrument from both raising grant lines and granting data to either the incoming memory portion or the outgoing memory portion simultaneously.

Abstract: A network for connecting a plurality of network nodes including a leader node and a plurality of follower nodes is provided. The leader node transmits a sync message to the plurality of follower nodes indicating a beginning of a network interval. The sync message contains data indicating a number of network nodes in the network. The leader node and the plurality of follower nodes transmit information during a transmission period of the network interval and do not transmit information during a sleep period of the network interval. The network interval is of a fixed length of time, the transmission period is of a variable length of time based upon the number of network nodes in the network, and the sleep period includes remaining time of the network interval after the transmission period.

Abstract: A wireless mesh network including a leader node and a plurality of follower nodes is provided. The leader node transmits a sync message to the plurality of follower nodes indicating a beginning of a network interval. The leader node and the plurality of follower nodes transmit information during a transmission period of the network interval and do not transmit information during a sleep period of the network interval. The leader node and the plurality of follower nodes use less power in the sleep period than in the transmission period; and the plurality of follower nodes each include a timer adapted to time the transmission period and the sleep period for each of a plurality of future network intervals in an absence of continued receipt of the sync message from the leader node during the plurality of future network intervals.

Abstract: The systems and methods of this disclosure enable evaluation, verification, and testing of toxic gas sensors without the need for a target gas cylinder. The systems and methods for testing toxic gas sensors over a broad range of frequencies facilitates evaluation and diagnosis of mechanisms underlying sensor performance. The systems and methods of this disclosure may be incorporated into portable gas sensing equipment for in field diagnostics.

Abstract: A system for calculating a heat index includes a temperature sensor, a humidity sensor, and at least two microphones. The sensors and microphones are in communication with a microprocessor, and the microprocessor is configured to analyze data from the microphones to estimate wind speed and to calculate a heat index using data from the temperature sensor, humidity sensor and the estimated wind speed.

Abstract: A system for creating of list of active beacons includes at least one receiving device, comprising a receiver adapted to receive a beacon broadcast from one or more of a plurality of beacons, resulting in one or more received beacon broadcasts, a processor, a memory, and a smart beacon application. For each received beacon broadcast comprising informational data and data regarding a range of relevance for that beacon, the smart beacon application: 1) determines whether the beacon is relevant by comparing a strength of the received beacon broadcast to the range of relevance in the beacon broadcast, and 2) creates a list of relevant beacons.

Abstract: A portable electrochemical or combustible lower explosive limit gas sensing apparatus includes a housing comprising at least one exterior surface and an interior space. At least one depression is formed in the at least one exterior surface and is adapted to accommodate, at least in part, components of an electrochemical gas sensor or a combustible LEL gas sensor. A processing unit is disposed in the interior space of the housing and is in electrical communication with the electrochemical gas sensor or the combustible LEL gas sensor.

Abstract: Systems for muster include an entrance receiving device in a location adapted to receive a plurality of beacon broadcasts from one or more of a plurality of mobile beacons, each associated with a worker and broadcasting an identification ID of the worker, to create an on-site record of workers entering or exiting the location. The system includes a muster site receiving device at a muster site to record an identification ID from beacon broadcasts of workers at the muster site. The on-site record is compared to the recorded muster site IDs to determine if all workers have mustered. Alarms may be triggered if not.

Abstract: A network for connecting a plurality of network nodes includes a leader node and a plurality of follower nodes. The leader node transmits a sync message to the plurality of follower nodes indicating a beginning of a network interval, wherein the leader node and the plurality of follower nodes transmit information during a transmission period and do not transmit information during a sleep period of the network interval, and wherein during a predetermined time of the transmission period of the network interval each of the follower nodes that received the sync message transmit a message advertising one or more properties of the leader node. The network nodes are environmental sensing devices that are part of a worker safety system.

Abstract: Environmental monitoring devices for detecting and warning users of unhealthy levels of a given substance are disclosed having more than one sensor for each substance to be detected. A processing unit, wirelessly coupled to the sensors in the devices can be configured to receive each of the output signals from the sensors, determine a detection signal for the substance based on the output signals, determine a gain of a majority of the sensors, and generate a calibration action responsive to the output signals deviating by a threshold amount, wherein the calibration action comprises adjusting a gain of a deviating sensor to correspond with the gain of the majority of sensors.