Digital spectral identifier-controller and related methods

• US 7,099,004 B2
• Filed: 01/05/2005
• Issued: 08/29/2006
• Est. Priority Date: 06/30/1999
• Status: Expired due to Fees

• Current Assignee: Masten Opto-Diagnostic Company
• Original Assignee: Masten Opto-Diagnostic Company
• Inventors: Masten, Billy R.
• Primary Examiner(s): Evans, F. L.
• Application Number:
  US11/029,553
• Publication Number:
  US 20050122513A1
• Time in Patent Office: 601 Days
• Field of Search: 356/326, 356/328, 702/28, 382/109, 382/110
• US Class Current: 356/328
• CPC Class Codes: A01M 21/043 by chemicals
• CPC Class Codes: A01M 7/0089 Regulating or controlling systems the delivery being related to the movement of a vehicle B05B9/06
• CPC Class Codes: G01J 3/28 Investigating the spectrum using colour filters G01J3/51
• CPC Class Codes: G01J 3/42 Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry beam switching arrangements G01J3/08
• CPC Class Codes: G01N 21/31 Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry G01N21/72 takes precedence
• CPC Class Codes: G01N 21/3563 for analysing solids; Preparation of samples therefor

Abstract

A portable high speed, low cost, wide spectrum light scanning unit with an aiming device for receiving reflected light from an object and diffracting the light into segments of wavelengths and a linear sensor array having elements positioned to receive the segments and to measure the relative magnitude of such segments to define a spectral distribution of the object for transmission to a remote site for identification and/or analysis without augmentation. In addition, the specification discloses the use of a micro-controller to process the distribution and to identify and/or analyze the object.

Claims

1. A low cost, high speed sensing method for collecting and wirelessly transmitting spectral information of an object, such as plants, tissue, fluids and gasses for remote analysis of the condition and/or identity of the objects, said method comprising the steps of:

a) focusing a portable spectrometer on an object from which the spectral information is to be gathered with the use of an aiming device carried by the portable spectrometer;

b) sensing the magnitude of a plurality of wave lengths of light received from the object for remote analysis with an image array;

c) electronically collecting the magnitude of the plurality of wavelengths to define a spectral distribution of light received from said object;

d) wirelessly transmitting the spectral distribution to a remote readable electronic memory to facilitate said remote analysis of the object.

2. The method recited in claim 1 in which the spectral distribution is first converted to digital information prior to transmittal.

3. The method as recited in claim 1 in which said wave lengths included those of infra-red and/or visible light and/or ultraviolet light.

4. A method as recited in claim 1 in which said method includes:

a) the sensing of a plurality of spectral distributions of points along a line with an area array;

b) the electronic measurement of the magnitude of the received wavelengths of those points along the line; and

c) the transmission of each spectral distribution.

5. A method as recited in claim 4 in which the electronic measurement of the magnitude of received wave lengths is accomplished by the use of an area imager.

6. A low cost, objective and efficient method of examining plants, tissue and fluids for the presence of stress, disease, moisture and nutrient deficiencies and other conditions, said method comprising the steps of:

a) using a lens to collect light received from said plants, tissue and/or fluid and to pass said light through a diffraction device for dividing the light into a plurality of groups of wave lengths;

b) directing said groups of wave lengths upon a plurality of imagers to generate signals of the magnitude of the light received by the imagers;

b) electronically reading said signals from said imagers to define a spectral distribution of the received light;

c) transmitting said spectral distribution to a remote facility for computer analysis of the spectral distribution to determine the presence of stress, disease, moisture and nutrient deficiencies and other conditions.

7. A method as recited in claim 6 in which a plurality of spectral distributions are collected along a line across the plant, tissue or fluid by an area array and a plurality of spectral distributions are transmitted to said remote facility.

8. An apparatus as recited in claim 6 in which said electronic data is indicative of the relative magnitude of the spectral distribution.

9. A method as recited in claim 6 in which a light beam is used to target the plant, tissue and/or fluid from which the light is to be sensed.

10. An method as recited in claim 9 in which said light beam is turned off prior to the collection of the spectral distribution.

11. A low cost, sensing method for obtaining spectral information on the identity and/or physical condition of objects such as plants, fluids and/or tissue for subsequent analysis of their identity and/or physical condition, comprising the steps of:

a) sensing the spectral distribution of a plurality of wave lengths of light collected from the object through a lens, a diffraction device and an imager;

b) electronically measuring the magnitude of different wave lengths of light received by the imager to electronically define the spectral distribution of said object; and

c) wirelessly transmitting said spectral information to a readable electronic memory for said subsequent analysis and/or identification of said object, and

d) said spectral distribution being sensed by a portable spectral apparatus having a target device for aiming the apparatus at said object.

12. A method as recited in claim 11 in which said spectral information is transmitted in analog format.

13. A method as recited in claim 11 in which a micro controller is used to control said transmission.

14. An apparatus as recited in claim 13 in which said micro controller contains an algorithm for analysis and/or identification of said object.

15. A portable low cost spectral apparatus for scanning an object, including plants, tissue and/or fluids, and obtaining spectral distributions therefrom, said apparatus including;

a) a portable scanning and sensing unit having an aperture from receiving light from an object and a lens for directing the light to a diffraction device;

b) a diffraction device for separating the light into a plurality of different wave lengths;

c) a sensor array mounted in the path of said diffracted light having sensors to receive said different wave lengths of light and provide a plurality of spectral distributions of light from said object; and

d) an aiming device aligned with said aperture for identifying the object and/or portions thereof from which the light is to be received.

16. A sensing apparatus as recited in claim 15 in which said aiming device is a target light is directed in the opposite direction of the reflected light.

17. A sensing apparatus as recited in claim 15 in which said spectral distributions includes ultra violet and/or visible and/or infra-red spectral distributions.

18. A low cost, remote diagnostic method for identifying the condition, disease, nutrient needs of plants, tissue and fluids, said method comprising the steps of:

a) using a lens to collect light transmitted from said plant, tissue and/or fluids;

b) diffracting said light into a plurality of wave lengths;

c) directing a plurality of said diffracted wave lengths upon a plurality of sensors of an imager;

d) measuring the magnitude of the diffracted wave lengths of light upon the sensors and collecting electronic data reflecting the magnitude of the transmitted light; and

e) transmitting said magnitudes of said diffracted wave lengths to a remote computer for analysis of thereof to determine the condition, disease, nutrient needs of said plant, tissue and/or fluids.

19. A method as recited in claim 18 in which said light is received from a plant and the magnitude of the diffracted wave lengths are transmitted for the purpose of identification of a plant disease and/or deficiency.

20. A method as recited in claim 18 in which said light is received from a plurality of points along a line and imposed upon an area array for linear identification and/or analysis.