Abstract: A downhole sensor system may include at least two accelerometers having at least two axes of measurement. The at least two accelerometers may include a first accelerometer in a first position and a second accelerometer in a second position. A first axis of the second accelerometer may be substantially coaxial with a first axis of the first accelerometer and a second axis of the second accelerometer may be parallel to and offset from a second corresponding axis of the first accelerometer. The downhole sensor system may further include at least one processor, and at least one non-transitory computer-readable storage medium storing instructions thereon that when executed by the at least one processor may cause the processor to measure a first acceleration from the first accelerometer and measure a second acceleration from the second accelerometer.

Abstract: A downhole sensor apparatus may include a structure securing a circuit board. The structure may be configured to be inserted into a recess in a tool on a drill string. The downhole sensor apparatus may include one or more sensors coupled to the circuit board and a cap over the structure. The downhole sensor apparatus may further include a data port electrically coupled to the circuit board and configured to transmit data from the sensors to an external device. The downhole sensor apparatus may include a threaded element configured to thread into complementary threads in the recess in the tool. The downhole sensor apparatus may be configured to operate in an idle condition. The downhole sensor apparatus may compare readings from at least two sensors to threshold downhole conditions and begin normal operation when the readings from the at least two sensors meet or exceed the threshold downhole conditions.

Abstract: A downhole sensor system may include at least two accelerometers having at least two axes of measurement. The at least two accelerometers may include a first accelerometer in a first position and a second accelerometer in a second position. A first axis of the second accelerometer may be substantially coaxial with a first axis of the first accelerometer and a second axis of the second accelerometer may be parallel to and offset from a second corresponding axis of the first accelerometer. The downhole sensor system may further include at least one processor, and at least one non-transitory computer-readable storage medium storing instructions thereon that when executed by the at least one processor may cause the processor to measure a first acceleration from the first accelerometer and measure a second acceleration from the second accelerometer.