# US 7,607,338 B1 · Handheld instrument for monitoring and/or identification of chemicals

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- Number: US 7,607,338 B1
- Document ID: US7607338B1
- Status: Granted
- Kind: B1
- Application number: 11/185,109
- Filed: 2005-07-20
- Granted: 2009-10-27
- Earliest claimed: 2004-07-30
- Assignees: The United States of America as represented by the Secretary of Agriculture
- Inventors: Wallace J. Lewis; Glen C. Rains; Samuel L. Utley
- Web page: https://patentgrep.com/patent/US7607338B1

## CPC

- G01N 33/0047: {Organic compounds}
- A01K 29/00: Other apparatus for animal husbandry
- G01N 33/5008: {for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics}
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- A01K: ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS

## Abstract

A Computer Vision Chemical Detector has been developed that uses invertebrate organisms trained to respond to targeted chemical odors.

## Claims

### Claim 1

A computer vision chemical detection device for detecting a presence of at least one chemical during a chemical detection process, the device comprising:
at least one organism to detect the at least one chemical,
a detection chamber enveloping the at least one organism, the detection chamber being structured so that an individual operator can carry the detection chamber from one area of investigation to a subsequent area of investigation;
a region of interest within the detection chamber, the region of interest being structured so that the at least one organism can relocate and ambulate into and out of the region of interest during a chemical detection process; and,
a sensor positioned to detect the a presence or absence of the at least one organism in the region of interest and notify the operator of a presence of the at least one chemical.

### Claim 2 (depends on 1)

The device of claim 1 wherein the sensor is a camera.

### Claim 3 (depends on 1)

The device of claim 1 wherein the device detects the at least one chemical based on a location of the at least one organism relative to the region of interest.

### Claim 4 (depends on 2)

The device of claim 2 wherein the camera is positioned to communicate a population density of the at least one organism present in the region of interest.

### Claim 5 (depends on 2)

The device of claim 2 wherein the camera is positioned to detect and communicate data regarding crowding behavior of the at least one organism in the region of interest.

### Claim 6 (depends on 2)

The device of claim 2 wherein the camera is positioned to detect and communicate data regarding area-restricted searching behavior of the at least one organism in the region of interest.

### Claim 7 (depends on 2)

The device of claim 2 wherein the region of interest is defined by and co-located with a gas inlet portion of the detection chamber.

### Claim 8 (depends on 1)

The device of claim 1 further comprising a user interface communicating with the sensor.

### Claim 9 (depends on 8)

The device of claim 8 wherein the user interface is a laptop computer.

### Claim 10 (depends on 1)

The device of claim 1 wherein the at least one organism is at least one invertebrate.

### Claim 11 (depends on 10)

The device of claim 10 wherein the at least one invertebrate is at least one wasp.

### Claim 12 (depends on 1)

The device of claim 1 wherein the at least one organism is selected from a group consisting of wasps, bees, moths, butterflies, beetles, assassin bugs, spiders, mites, ticks, scorpions, crayfish, lobsters, crabs snails, slugs, squids, and clams.

### Claim 13 (depends on 1)

The device of claim 1 wherein the organism is trained to detect the at least one chemical.

### Claim 14

A computer vision system for detecting a presence of at least one chemical, the system comprising:
at least one organism for detecting a presence of at least one chemical;
a detection chamber enclosing the at least one organism, the detection chamber being structured so that an individual user can carry the detection chamber from one area of investigation to a subsequent area of investigation;
a region of interest within the detection chamber, the detection chamber and the region of interest being structured so that the at least one organism is capable of ambulating and relocating into and out of the region of interest during a chemical detection process;
a camera positioned so that the region of interest is within a field of vision of the camera;
a user interface in communication with the camera;
an elongate housing at least partially enclosing the camera and the detection chamber; and
a fan directing a gas into the elongate housing and through the detection chamber, the camera communicating a presence or absence of the at least one organism in the detection chamber region of interest to the user interface, the user interface notifying a user of a presence or absence of the at least one chemical in the gas.

### Claim 15 (depends on 14)

The system of claim 14 wherein the device detects the at least one chemical based on a location of the at least one organism relative to the region of interest.

### Claim 16 (depends on 14)

The system of claim 14 wherein the region of interest is defined by location of a detection chamber gas inlet.

### Claim 17

A method of detecting a presence of at least one chemical, the method comprising the steps of:
providing at least one organism for detecting a presence of at least one chemical;
depositing the least one organism in a detection chamber, wherein the detection chamber is structured so that an individual user can carry the detection chamber from one area of investigation to a subsequent area of investigation;
identifying a region of interest within the detection chamber, the detection chamber and the region of interest being structured so that the at least one organism is capable of ambulating and relocating into and out of the region of interest during a chemical detection process;
positioning a camera so that the region of interest is within a field of vision of the camera;
connecting a user interface to the camera;
placing the camera and the detection chamber in an elongate housing;
directing a gas into the elongate housing and through the detection chamber;
activating the camera to observe a presence or absence of the at least one organism in the region of interest;
enabling the user interface to analyze observations of the camera so that the user interface notifies a user of a presence of the at least one chemical in the gas based on a presence or absence of the at least one organism in the region of interest.

### Claim 18 (depends on 17)

The method of claim 17 further comprising purging the detection chamber with clean air and replacing the at least one organism after 48 hours.