Movement pattern recognizing apparatus for detecting movements of human bodies and number of passed persons
First Claim
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1. A movement pattern recognizing apparatus comprising:
- movement signal detection means including a converging lens for converging infrared rays into a predetermined angle and an infrared ray sensor for detecting a mobile body to detect, in a detection region in which said mobile body which can be detected by said sensor moves, a movement signal indicating the position of said mobile body, said movement signal changing as time elapses, said infrared ray sensor having a plurality of detection portions that detect infrared rays converged by said conveying lens to provide said movement signal;
movement signal normalizing means for generating normalized data corresponding to a movement signal provided by said movement signal detection means; and
reference temperature storage means for storing reference data about a predetermined reference temperature, wherein said movement signal normalizing means uses the reference data stored in said reference temperature storage means to obtain a ratio of or a difference between signals obtainable from said plural detection portions of said infrared array sensor, and compares said ratio or the magnitude of said difference between said detection portions and detection portions adjacent to said detection portions to perform a binary-coding process so as to generate normalized data corresponding to said movement signal;
movement pattern storage means for storing data about previous movement patterns which were realized when said mobile body moved in said detection region; and
movement pattern selection means for selecting data about a movement pattern, corresponding to said movement signal detected by said movement signal detection means, from said movement pattern storage means, whereinsaid predetermined reference temperature is a temperature which is detected by said movement signal detection means in a case where the heat generating body does not exist in said detection region, andsaid reference data is a mean value and a standard deviation of said reference temperature calculated by using said reference temperature obtained by sampling performed for a predetermined time.
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Abstract
A movement pattern recognizing apparatus has a movement signal detection device including a sensor for detecting a mobile body in a detection region and for providing a movement signal indicating the position of the mobile body. The signal changes as time elapses. The apparatus further has a movement pattern storage device for storing data about previous movement patterns which were realized when a mobile body moved in the detection region, and a movement pattern selection device for selecting data about the movement pattern from the movement pattern storage device based upon the movement signal detected by the movement signal detection device.
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Citations
18 Claims
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1. A movement pattern recognizing apparatus comprising:
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movement signal detection means including a converging lens for converging infrared rays into a predetermined angle and an infrared ray sensor for detecting a mobile body to detect, in a detection region in which said mobile body which can be detected by said sensor moves, a movement signal indicating the position of said mobile body, said movement signal changing as time elapses, said infrared ray sensor having a plurality of detection portions that detect infrared rays converged by said conveying lens to provide said movement signal; movement signal normalizing means for generating normalized data corresponding to a movement signal provided by said movement signal detection means; and reference temperature storage means for storing reference data about a predetermined reference temperature, wherein said movement signal normalizing means uses the reference data stored in said reference temperature storage means to obtain a ratio of or a difference between signals obtainable from said plural detection portions of said infrared array sensor, and compares said ratio or the magnitude of said difference between said detection portions and detection portions adjacent to said detection portions to perform a binary-coding process so as to generate normalized data corresponding to said movement signal; movement pattern storage means for storing data about previous movement patterns which were realized when said mobile body moved in said detection region; and movement pattern selection means for selecting data about a movement pattern, corresponding to said movement signal detected by said movement signal detection means, from said movement pattern storage means, wherein said predetermined reference temperature is a temperature which is detected by said movement signal detection means in a case where the heat generating body does not exist in said detection region, and said reference data is a mean value and a standard deviation of said reference temperature calculated by using said reference temperature obtained by sampling performed for a predetermined time.
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2. A movement pattern recognizing apparatus comprising:
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movement signal detection means including a converging lens for converging infrared rays into a predetermined angle and an infrared array sensor having a plurality of detection portions for detecting infrared rays converged by said converging lens to provide a movement signal indicating a position of a heat generating body, said movement signal changing as time elapses as said heat generating body moves in a detection region into which the infrared rays are converged; movement signal normalizing means for generating normalized data corresponding to a movement signal provided by said movement signal detection means; movement pattern storage means for storing data about previous movement patterns based upon normalized data generated by said movement signal normalizing means, the previous movement patterns having been realized when a heat generating body moved in said detection region; movement pattern selection means for selecting, from said movement pattern storage means, selected data about a movement pattern that corresponds to the normalized data generated by said movement signal normalizing means; movement pattern recognizing means for recognizing a movement pattern of the heat generating body in accordance with the selected data selected by said movement pattern selection means; and reference temperature storage means for storing reference data about a predetermined reference temperature, wherein said movement signal normalizing means uses the reference data stored in said reference temperature storage means to obtain a ratio of or a difference between signals obtainable from said plural detection portions of said infrared array sensor, and compares said ratio or the magnitude of said difference between said detection portions and detection portions adjacent to said detection portions to perform a binary-coding process so as to generate normalized data corresponding to said movement signal. - View Dependent Claims (3, 4, 5)
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6. A movement pattern recognizing apparatus comprising:
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movement signal detection means including a sensor for detecting a mobile body in a detection region in which the mobile body moves, and for providing a movement signal indicating the position of the mobile body, said movement signal changing as time elapses; movement pattern storage means for storing data about previous movement patterns realized when a mobile body moved in said detection region; movement pattern selection means for selecting data about a movement pattern, corresponding to said movement signal detected by said movement signal detection means, from said movement pattern storage means; and reference temperature storage means for storing reference data about a predetermined reference temperature, wherein said movement signal normalizing means uses the reference data stored in said reference temperature storage means to obtain a ratio of or a difference between signals obtainable from said plural detection portions of said infrared array sensor, and compares said ratio or the magnitude of said difference between said detection portions and detection portions adjacent to said detection portions to perform a binary-coding process so as to generate normalized data corresponding to said movement signal. - View Dependent Claims (7, 8, 9)
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10. An apparatus for detecting movements of human bodies comprising:
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an infrared array sensor having a plurality of devices arranged in a direction in which human beings move; signal change detection means for detecting change in a leading edge and/or trailing edge of output signals from each of said devices of said infrared array sensor which occur in a predetermined period of time; determining means using a predetermined rule to, in accordance with a detected value obtained from each of said devices of said infrared array sensor, determine movements of human bodies in an area sensed by said infrared array sensor; and a threshold setting means which causes said infrared array sensor to detect an average of a background temperature over a certain period so as to set a predetermined upper threshold and a predetermined lower threshold with respect to the detected average background temperature, wherein said signal change detection means detects the change in the leading edge and/or trailing edge of each of said output signals by using said thresholds as references to provide a change value representative of the detected change, said predetermined rule is a rule in which the number of pairs of the leading edge and the trailing edge detected from each of said devices is the number of persons for each device, said predetermined rule is a rule in which the number of persons obtained from each device is totally determined to finally determine the number of persons, said determining means makes a determination of no person even when a change value provided by said signal change detection means is outside of one of the thresholds, if a rate of change of the change value exceeds a predetermined rate, and said determining means determines that a direction in which detection states adjoin is a direction in which human bodies have been moved, and in a case where the number of adjoining devices, which are in a non-detecting state, is smaller than a predetermined number and the time from the trailing edge to the leading edge of the device is shorter than a predetermined time, said determining means determines that said non-detecting state is a detecting state. - View Dependent Claims (11, 12, 13)
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14. An apparatus for detecting movements of human bodies comprising:
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a plurality of infrared array sensors having a plurality of devices arranged in a direction in which human beings move; signal change detection means for detecting change in the leading edge and/or trailing edge of output signals from each of said devices of each of said infrared arrays occurring in a predetermined period of time; determining means using a predetermined rule to, in accordance with a state of appearance of said detected value of each of said devices of each of said infrared arrays between said infrared arrays, determine movements of human bodies in an area which is sensed by said plural infrared arrays; and a threshold setting means which causes said infrared array sensor to detect an average of a background temperature over a certain period so as to set a predetermined upper threshold and a predetermined lower threshold with respect to the detected average background temperature, wherein said signal change detection means detects the change in the leading edge and/or trailing edge of each of said output signals by using said thresholds as references to provide a change value representative of the detected change, said predetermined rule is a rule in which the number of pairs of the leading edge and the trailing edge detected from each of said devices is the number of persons for each device, said predetermined rule is a rule in which the number of persons obtained from each device is totally determined to finally determine the number of persons, said determining means makes a determination of one person when a change value provided by said signal change detection means falls below the lower threshold for a predetermined period after the change value exceeded the upper threshold. said determining means determines that a direction in which detection states adjoin is a direction in which human bodies have been moved, and in a case where the number of adjoining devices, which are in a non-detecting state, is smaller than a predetermined number and the time from the trailing edge to the leading edge of the device is shorter than a predetermined time, said determining means determines that said non-detecting state is a detecting state. - View Dependent Claims (15, 16, 18)
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17. An apparatus for detecting movements of human bodies comprising:
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a plurality of infrared array sensors having a plurality of devices arranged in a direction in which human beings move; signal change detection means for detecting change in the leading edge and/or trailing edge of output signals from each of said devices of each of said infrared arrays occurring in a predetermined period of time; determining means which determines an output denoting a result of detection performed by each of said infrared array sensors in terms of time and spatially so as to obtain a state of transition and appearance of said detected values between each of said infrared array sensors and which uses a predetermined rule to, in accordance with the obtained state of transition and appearance, determine movements of human bodies in an area which is sensed by said plural infrared arrays; and a threshold setting means which causes said infrared array sensor to detect an average of a background temperature over a certain period so as to set a predetermined upper threshold and a predetermined lower threshold with respect to the detected average background temperature, wherein said signal change detection means detects the change in the leading edge and/or trailing edge of each of said output signals by using said thresholds as references to provide a change value representative of the detected change, said predetermined rule is a rule in which the number of pairs of the leading edge and the trailing edge detected from each of said devices is the number of persons for each device, said predetermined rule is a rule in which the number of persons obtained from each device is totally determined to finally determine the number of persons, said determining means makes a determination of one person when a change value provided by said signal change detection means falls below the lower threshold for a predetermined period after the change value exceeded the upper threshold, said determining means makes a determination of no person even when a change value provided by said signal change detection means is outside of one of the thresholds, if a rate of change of the change value exceeds a predetermined rate, and said determining means determines that a direction in which detection states adjoin is a direction in which human bodies have been moved, and in a case where the number of adjoining devices, which are in a non-detecting state, is smaller than a predetermined number and the time from the trailing edge to the leading edge of the device is shorter than a predetermined time, said determining means determines that said non-detecting state is a detecting state.
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Specification