Patent ID: 6285955
Filing Date: 2001-09-04
Classification: G01D

Abstract:
A data logger for collecting analog data or discrete data using a connected analog sensor or a connected discrete sensor, comprising:a substantially cylindrical tube and a top and a bottom, and including disposed within the tube:a microcontroller coupled to control logic and power management circuitry bit and adapted to send commands to the control logic and instructions to the power management circuitry;an analog processor capable of being electrically coupled to any connected analog sensor and adapted to receive analog data therefrom, wherein any connected analog sensor is adapted to receive sensor selection signals from the control logic and voltage selection signals from the power management circuitry, and wherein the analog processor is adapted to convert the analog data to digital data and transmit the digital data to the microcontroller;a discrete sensor counter electrically coupled to any connected discrete sensor and adapted to receive discrete data from any connected discrete sensor and output counter output data;a data memory coupled to the microcontroller and adapted to store as real-time data the digital data and the counter output data; anda battery coupled to the power management circuitry;a bottom cap mechanically connected to the bottom of the tube and allowing for the mechanical connection of an analog sensor and a discrete sensor thereto, and thereby being electrically coupled to the analog processor and the discrete sensor counter; anda top cap mechanically connected to the top of the tube and including thereon a digital display that is coupled to the microcontroller and capable of displaying the real-time data and a description of each connected sensor at different periods of time.