FR2535492A1 - Meterological microcomputer. - Google Patents

Abstract

The invention, of an electronic type, aims to ally a microprocessor, and thus a processing program, to sensors of several atmospheric variables such as temperature, hygrometric degree. It permits a grower, a sports club, a small collective which is more or less isolated or an individual to have short-term warning of the evolution of his micro-climate and to be aware, for example, of the risks of rain, hail, storm, heatwave, etc. Its various component, probes and sensors electronic components and microcomputer components exist on the market. The trickiest part concerns the program itself, which has to synthesize the measurement in real time and others which are older and already stored in memory: it is important, in effect, to limit the amount of data used in order to remain within the capacity of a microprocessor.

Description

The present invention relates to a device for predicting a likely evolution of the local micro-climate by synthesis in software incorporated into a microprocessor of a set of stored data.
from repeated measurements of some atmospheric variables and their gradients
The technical areas concerned are electronic and 19 IT
To the best of our knowledge, this device has not been used before, performing such a synthesis of these measurements from any computer program.

Barometers and other devices for measuring atmospheric variables simply display these measurements or their trend. With our device, the user (farmer, sports club, local community, individual) will have an evaluation of the likely evolution of the micro-climate. involving equalizations. behavior of atmospheric fluids and standard evolution scenarios of climates.

 The service offered therefore fits between that offered by the barometer-hygrometer-thermometers and that, at a more regional level, offered by the national meteorology.

The difficulty obviously lies in the development of software processing enough data to offer a serious forecast but not too much to stay within the limits of the processing capacities of a microprocessor.
The attached diagram gives an idea of the system.

 First of all, we find in I a set of sensors of the main variables taken into account, which can be on the device itself or be connected to it by wire and arranged at different points in a garden, courtyard, local community, etc. These are thermometric and hygrometric probes, atmospheric pressure and h luminosity sensors, even anemometric probe and PF sensor to measure atmospheric acidity.

 These various sensors supply analog signals which are amplified by an amplifier in 2 then converted into 3 by an analog-digital converter; thus transformed into binary data they are recorded in random access memory 4.

 A microprocessor on which is written, in assembly language for example, the weather forecast program (5), makes it possible to synthesize the measurements of the aforementioned variables but also their different derivatives obtained by comparison of their values at successive times.

Different usual elements in such devices ensure their operation: Power supply, data, address and control bus, non-volatile memory device (mini-cassette), and above all clock,
Finally a video interface (7) allows the display of the results for the user: either the measurements themselves, or an estimate of their evolution, or finally a characterization of typical microclimatic variations likely to occur in the short term (day or two days), such as rain, hail, thunderstorm, heat wave, etc.

 The industrial application will not pose any problem from the moment when a measurement processing program can be devised: It will be recorded on microprocessors existing on the market and assembled with the various components and sensors mentioned.

Claims (3)

 CLAIMS:  1 Device performing the synthesis over time of measurements of atmospheric variables and their gradients from a computer program of behavior of micro-climates contained in a microprocessor, and characterized by a set of sensors measuring atmospheric variables such as PH, luminosity, pressure, temperature, hygrometric degree, the analog-digital conversion of the signals which result from it, and the addressing-in memory of the binary data thus obtained, their processing by a program involving the equations of behavior of fluids and scenarios for the evolution of climates, and finally a video interface expressing to the user different types of results: either the measurements themselves, or an estimate of their evolution, or finally a characterization of microclimatic variations typical, likely to occur in the short term (one or two days), such as rain, hail, snow, thunderstorm, heat wave. 2. Device according to claim I, characterized by the following sensors: thermometric probes and hygrometric probe, barometric sensor and light sensor. 3. Device according to claim 2, characterized by the addition of other sensors; either an anemomeric probe, or a pH sensor, or both.