Autonomous along string measurement tool

An autonomous along string measurement tool, comprising:

• a data collection and transmission system configured to collect downhole data and transmit the downhole data to a surface of a wellbore, the data collection and transmission system comprising:
• a sensor configured to collect the downhole data;
• a communication tool configured to transmit the downhole data to the surface;
• and
• an operations processor configured for receiving downhole data from the sensor and controlling the communication tool to transmit the downhole data to the surface;
• and
• a power bus configured for supplying power to the data collection and transmission system;
• a power source in selective electrical communication with the power bus;
• and
• a power gateway configured to control the selective electrical communication between the power source and the power bus and comprising a power control processor configured to:
• maintain the tool in a sleep mode unless the tool is arranged in a substantially upright condition;
• and
• when the tool is placed in the substantially upright condition and due to the placing in the substantially upright condition, the power control processor places the power source in electrical communication with the power bus.