A wearable universal blast sensor includes an underwater pressure sensing transducer and at least one blast parameter sensing transducer to measure a blast parameter from the blast other than pressure, an analog-to-digital converter having an analog input and a digital output, the analog input coupled to the pressure sensing transducer and a digital output, a rolling memory buffer coupled to the digital output of the analog-to-digital converter, at least one controller coupled to the rolling memory buffer and configured to store a time sequence of digital pressure signals from the digital output of the analog-to-digital converter, write into a blast event memory data from the rolling memory buffer including data corresponding to the blast event if one of the digital pressure signals exceeds a set first threshold, generate a first blast magnitude indicator signal if any of the digital pressure signals exceeds a second set threshold.

A wearable universal blast sensor includes an underwater pressure sensing transducer and at least one blast parameter sensing transducer to measure a blast parameter from the blast other than pressure, an analog-to-digital converter having an analog input and a digital output, the analog input coupled to the pressure sensing transducer and a digital output, a rolling memory buffer coupled to the digital output of the analog-to-digital converter, at least one controller coupled to the rolling memory buffer and configured to store a time sequence of digital pressure signals from the digital output of the analog-to-digital converter, write into a blast event memory data from the rolling memory buffer including data corresponding to the blast event if one of the digital pressure signals exceeds a set first threshold, generate a first blast magnitude indicator signal if any of the digital pressure signals exceeds a second set threshold.

A wearable blast sensor for simultaneously measuring blast pressure from multiple directions includes multiple pressure sensing transducers oriented in individual planes for simultaneously measuring blast pressure of a blast from multiple directions, at least one blast parameter sensing transducer to measure a blast parameter, a memory for storing blast pressure data and measured blast parameter data, a controller coupled to and responsive to the multiple pressure sensing transducers and to the blast parameter sensing transducer to capture and store measured blast pressure data and measured blast parameter data, at least one indicator to indicate blast exposure severity as a function of amplitude of measured blast pressure data and measured acceleration amplitude, the multi-directional pressure sensor device, the blast parameter sensing transducer, the memory, the controller, and the indicator light and/or display sealed within in a housing, and at least one attachment device coupled to the housing for mounting.

A wearable blast sensor for simultaneously measuring blast pressure from multiple directions includes multiple pressure sensing transducers oriented in individual planes for simultaneously measuring blast pressure of a blast from multiple directions, at least one blast parameter sensing transducer to measure a blast parameter, a memory for storing blast pressure data and measured blast parameter data, a controller coupled to and responsive to the multiple pressure sensing transducers and to the blast parameter sensing transducer to capture and store measured blast pressure data and measured blast parameter data, at least one indicator to indicate blast exposure severity as a function of amplitude of measured blast pressure data and measured acceleration amplitude, the multi-directional pressure sensor device, the blast parameter sensing transducer, the memory, the controller, and the indicator light and/or display sealed within in a housing, and at least one attachment device coupled to the housing for mounting.

Examples extend to methods, systems, apparatus, and computer program products for detecting impacts on metal targets in a live-fire environment. In one aspect, a system determines and displays a bullet impact on a steel target. The system includes a plurality of sensors conjoined with said steel target and including at least one strain gauge for measuring data including strain on a target. A set of LED lights is conjoined with said steel target for displaying bullet impacts. The system includes a wireless transmitter adapted to transmit target impact data. The wireless transmitter is conjoined with or otherwise communicably connected to the plurality of sensors. The system includes at least one remotely located wireless receiver for receiving transmitted target impact data.

Examples extend to methods, systems, apparatus, and computer program products for detecting impacts on metal targets in a live-fire environment. In one aspect, a system determines and displays a bullet impact on a steel target. The system includes a plurality of sensors conjoined with said steel target and including at least one strain gauge for measuring data including strain on a target. A set of LED lights is conjoined with said steel target for displaying bullet impacts. The system includes a wireless transmitter adapted to transmit target impact data. The wireless transmitter is conjoined with or otherwise communicably connected to the plurality of sensors. The system includes at least one remotely located wireless receiver for receiving transmitted target impact data.

A pressure dosimeter can include a body-mountable housing comprising a well having a first end portion open to the atmosphere, a second closed end portion, and a cavity. The dosimeter can include a membrane assembly disposed within the cavity, and a sealing member disposed within the cavity between the membrane assembly and the second end portion. The membrane assembly has a diameter less than a diameter of the cavity and a thickness less than a height of the cavity such that it can move within the cavity allowing air to pass around it and into the second end portion. When exposed to a pressure event the membrane assembly is urged against the sealing member, sealing the second end portion. The membrane will rupture at a selected overpressure threshold.

Examples are directed towards apparatuses, systems, and methods. For example, an apparatus includes a weight including a first side and a second side. The first side of the weight forms a receiving hole in the first side. A pin includes a first end and a second end. The second end of the pin is inserted into the receiving hole of the weight. The pin includes a reduced portion. A pin detonator is coupled to the reduced portion of the pin to sever the pin when detonated.

Examples are directed towards apparatuses, systems, and methods. For example, an apparatus includes a weight including a first side and a second side. The first side of the weight forms a receiving hole in the first side. A pin includes a first end and a second end. The second end of the pin is inserted into the receiving hole of the weight. The pin includes a reduced portion. A pin detonator is coupled to the reduced portion of the pin to sever the pin when detonated.

A method, system, and computer-readable media for identifying false positive data within a set of blast exposure data. After debiasing and filtering the blast exposure data, an algorithm identifies predetermined features within the data that may be indicative of false positive data. The predetermined features are used to calculate a false positive score and if the false positive score exceeds a predetermined score threshold, the data is flagged with a false positive flag and may be removed from the set of blast exposure data.