Systems, methods, and devices for monitoring weather and field conditions
Described herein are systems and method for monitoring weather conditions and controlling field operations based on the weather conditions. In one embodiment, a system for monitoring weather conditions for field operations includes a plurality of weather devices for monitoring weather conditions of fields with at least at one weather device in proximity to each field being monitored and at least one weather device having an electronics module for determining weather data including precipitation data. The system also includes an agricultural computer system having at least one processing unit for executing instructions for monitoring weather conditions. The at least one processing unit is configured to execute instructions to receive weather data from the plurality of weather devices for monitoring weather conditions of fields, to process the weather data, and to generate data including precipitation rate for monitoring weather conditions and operations of the plurality of weather devices.
1. An apparatus for monitoring weather conditions for field operations, the apparatus comprising:
a droplet former disposed to receive precipitation elements at an inlet and form droplets, the droplet former configured to guide the droplets to an outlet, the droplet former defining a funnel having a textured inner surface, wherein an upper portion of the textured inner surface defines a greater downward slope than a lower portion of the textured inner surface; and
a droplet counter positioned to be vertically aligned with the outlet, the droplet counter configured to count droplets released by said outlet of the droplet former based on the droplets passing between first and second electrical contacts of the droplet counter.
2. The apparatus for monitoring weather conditions for field operations of claim 1 , wherein the droplet former is configured to form the droplets and dispense the droplets to the droplet counter at a consistent velocity.
3. The apparatus for monitoring weather conditions for field operations of claim 1 , wherein the textured inner surface of the droplet former is configured to reduce a statistical deviation of droplet size, shape, and velocity of the droplets, which are released at the outlet in comparison to a statistical deviation of size, shape, and velocity of precipitation elements which are received at the inlet.
4. The apparatus for monitoring weather conditions for field operations of claim 1 , wherein the textured inner surface of the droplet former comprises regularly-spaced roughness elements which are arranged in a plurality of radially-spaced groupings disposed at a plurality of heights along the height of the inner surface.
5. The apparatus of claim 1 , wherein the droplet counter includes:
a droplet counter circuit configured to generate an output signal in response to input signals from the first and second electrical contacts; and
a comparator circuit coupled to the droplet counter circuit, the comparator circuit configured to compare the output signal of the droplet counter circuit to a reference voltage signal.
6. The apparatus of claim 5 , wherein the comparator circuit is configured to generate an output signal in response to comparing the output signal of the droplet counter circuit to the reference voltage signal.
7. The apparatus of claim 6 , wherein the output signal of the comparator circuit comprises a first value when the output signal of the droplet counter circuit is less than the reference voltage signal and a second value when the output signal of the droplet counter circuit is greater than the reference voltage signal.
8. The apparatus of claim 7 , wherein the comparator circuit is configured to send the output signal to a data processing system that is communicatively coupled to the comparator circuit, the data processing system configured to increment a droplet count upon the output signal switching from the second value to the first value.
9. The apparatus of claim 1 , wherein the textured inner surface defines a spiral ramp.
10. The apparatus of claim 9 , wherein the spiral ramp includes the upper portion and the lower portion of the textured inner surface.
11. The apparatus of claim 10 , wherein the upper portion of the textured inner surface includes multiple upper portions, and the lower portion of the textured inner surface includes multiple lower portions; and
wherein a vertical spacing between vertically adjacent upper portions of the spiral ramp is greater than a vertical spacing between vertically adjacent lower portions.
12. A circuit for measuring precipitation, comprising:
a droplet-based oscillator circuit to generate a first frequency that is a function of resistance between first and second electrical contacts of a droplet counter;
a fixed-frequency oscillator circuit to generate a second frequency that is constant; and
a divider circuit coupled to the droplet-based oscillator circuit and the fixed-frequency oscillator circuit, the divider circuit to generate an output signal based on a comparison of the first frequency and the second frequency.
13. The circuit for measuring precipitation of claim 12 , wherein the first frequency is greater when a droplet electrically connects the first and second electrical contacts in comparison to when no droplet is present between the first and second electrical contacts.
14. The circuit for measuring precipitation of claim 13 , wherein the first frequency is greater than the second frequency when a droplet electrically connects the first and second electrical contacts and the first frequency is less than the second frequency when no droplet is present between the first and second electrical contacts.
15. The circuit for measuring precipitation of claim 13 , wherein the output signal comprises a droplet pulse having a pulse period and comprising a plurality of sub-pulses.
16. The circuit for measuring precipitation of claim 15 , wherein the pulse period comprises a length that is related to a size of a droplet and a number of the plurality of sub-pulses relates to a conductivity of the droplet.