Combined system for detecting animal's motion and activity

• US 5,915,332 A
• Filed: 09/09/1996
• Issued: 06/29/1999
• Est. Priority Date: 09/09/1996
• Status: Expired due to Fees

• Current Assignee: Ming-Shing Young, Yan-Chay Li
• Original Assignee: Ming-Shing Young, Yan-Chay Li
• Inventors: Young, Ming-Shing, Li, Yan-Chay
• Primary Examiner(s): PRICE JR, RICHARD THOMAS
• Application Number:
  US08/709,758
• Time in Patent Office: 1,023 Days
• Field of Search: 119/421, 119/907, 119/174
• US Class Current: 119/421
• CPC Class Codes: A01K 1/031 Cages for laboratory animals; Cages for measuring metabolism of animals
• CPC Class Codes: A01K 29/005 Monitoring or measuring activity, e.g. detecting heat or mating
• CPC Class Codes: A61B 2503/40 Animals
• CPC Class Codes: A61B 2503/42 for laboratory research
• CPC Class Codes: A61B 2562/046 in a matrix array
• CPC Class Codes: A61B 5/1105 of laboratory animals, e.g. activity

Abstract

There is provided a system for automatically sensing the activities of an animal within a confined space. The system generally includes a containment assembly having top and side portions within which an animal may be confined. The system also includes an infrared light matrix subsystem for sensing the animal'"'"'s position within the containment assembly relative to a first plane; an ultrasonic phase shift subsystem for sensing animal'"'"'s position change within the containment assembly relative to a second plane; as well a decoding and interface circuit subsystems coupled to both the infrared light matrix and ultrasonic phase shift subsystems to perform the necessary decoding and input/output interface functions. The infrared light matrix subsystem is formed by a plurality of infrared transmitter and receiver pairs preferably attached to the side portions of the containment assembly and controlled by a single-chip microcomputer. The ultrasonic phase shift subsystem is formed by a plurality of ultrasonic transmitter and receiver pairs preferably attached to the top portion of the containment assembly which are also controlled by a single-chip microcomputer.

Claims

1. A system for automatically sensing the activities of an animal within a confined space comprising:

(a) a containment assembly adapted to confine said animal therein, said containment assembly having at least a top portion and a plurality of side portions;

(b) an infrared light matrix subsystem including a plurality of infrared transmitter and receiver pairs attached to said side portions of said containment assembly and a single chip microcomputer coupled thereto, said infrared light matrix subsystem single chip microcomputer controlling said infrared transmitter and receiver pairs to sense the position of said animal relative to a first plane;

(c) an ultrasonic phase shift subsystem including a plurality of ultrasonic transmitter and receiver pairs attached to said top portion of said containment assembly and a single chip microcomputer coupled thereto, said ultrasonic phase shift subsystem single chip microcomputer controlling said ultrasonic transmitter and receiver pairs to sense the position change of said animal relative to a second plane; and

,

(d) a decoding circuit subsystem coupled to said infrared light matrix and said ultrasonic phase shift subsystems; and

,

(e) an interface circuit subsystem coupled to said infrared light matrix and said ultrasonic phase shift subsystems for input and output therethrough of data of said system.

2. The system for sensing the activities of an animal within a confined space as recited in claim 1 wherein said infrared light matrix subsystem further includes a transmitter module and a receiver module, said transmitter module actuating said infrared transmitters, said receiver module receiving output signals from said infrared receivers.

3. The system for sensing the activities of an animal within a confined space as recited in claim 1 wherein said ultrasonic phase shift subsystem further includes a signal generator circuit and a digital phase meter, said signal generator circuit producing ultrasonic sound signals, said digital phase meter detecting phase differences between incident ultrasonic waves transmitted from said ultrasonic transmitters and reflected waves received by said ultrasonic receivers.

4. The system for sensing the activities of an animal within a confined space as recited in claim 1 wherein said decoding circuit subsystem includes a multiplexer and a demultiplexer, said multiplexer and said damultiplexer cooperatively selecting for actuation at least one of said ultrasonic transmitter and receiver pairs responsive to signals received from said infrared light matrix subsystem.

5. The system for sensing the activities of an animal within a confined space as recited in claim 1 wherein said interface circuit subsystem includes a plurality of first-in-first-out buffer chips, said first-in-first-out buffer chips receiving signals from said infrared light matrix subsystem and said ultrasonic phase shift subsystem.

6. The system for sensing the activities of an animal within a confined space as recited in claim 5 wherein said interface circuit subsystem includes means for reversibly transmitting 16-bit data signals to a computer.