Handheld moisture sensor device

摘要

A handheld moisture sensing device for use in determining the moisture content of biological material, such as animal feed. Adapted to be pressed against biological material to be analyzed, the device includes a sensor assembly, including a housing with an end structure including a grate adapted to engage the material to be examined, a near infrared (NIR) LED, an NIR light sensor, a glass mounted in the housing adjacent the light source so that light from the light source passes through the glass, a glass heater positioned adjacent the glass for heating the glass, a lens mounted in the housing adjacent the NIR sensor so that the NIR light reflected off the biological material passes through the glass and is focused by the lens onto the NIR sensor, and a controller connected to the NIR sensor and receiving a signal related to the reflected NIR light received by the NIR sensor.

主权项

1. A near infrared spectroscope adapted to be pressed against material to be analyzed, the spectroscope comprising:
a sensor assembly including a housing with an end structure adapted to engage material to be examined; a near infrared light source mounted in the housing; a near infrared light sensor mounted in the housing, and positioned to receive near infrared light from the near infrared light source, reflected off of the material; a glass mounted in the housing adjacent the light source so that light from the light source passes through the glass, the glass being spaced apart from the end structure, the near infrared light sensor being positioned such that the glass is between the sensor and the end structure; a glass heater adjacent the glass and capable of heating the glass; and a temperature sensor capable of sensing a temperature from the glass, the glass heater being activated in response to the temperature from the glass being lower than a predetermined value.