EP2489024A1 - Installation et procede de surveillance d'une zone delimitee et predeterminee a l'aide d'au moins un capteur acoustique - Google Patents
Installation et procede de surveillance d'une zone delimitee et predeterminee a l'aide d'au moins un capteur acoustiqueInfo
- Publication number
- EP2489024A1 EP2489024A1 EP10778690A EP10778690A EP2489024A1 EP 2489024 A1 EP2489024 A1 EP 2489024A1 EP 10778690 A EP10778690 A EP 10778690A EP 10778690 A EP10778690 A EP 10778690A EP 2489024 A1 EP2489024 A1 EP 2489024A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- activity
- monitoring
- alarm
- predetermined
- information signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
- G08B13/1672—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using sonic detecting means, e.g. a microphone operating in the audio frequency range
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0407—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis
- G08B21/043—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis detecting an emergency event, e.g. a fall
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/001—Alarm cancelling procedures or alarm forwarding decisions, e.g. based on absence of alarm confirmation
Definitions
- the present invention relates to an installation, a method and an associated computer program for monitoring a defined and predetermined surveillance zone.
- a monitoring installation comprising:
- At least one acoustic sensor arranged in the surveillance zone and designed to convert, in an information signal, a sound wave captured resulting from an occurrence of an activity in the surveillance zone,
- a processing device designed to receive the information signal
- the invention applies more particularly to the monitoring of at least one human activity in the surveillance zone.
- a known solution in the state of the art is to provide the person with a portable device, for example a collar, comprising a button or a mechanism for calling for help, the actuation triggers the sending of an alarm to the outside, in particular to a monitoring center or to an identified third party.
- a portable device for example a collar
- the actuation triggers the sending of an alarm to the outside, in particular to a monitoring center or to an identified third party.
- This solution requires action by the supervised person, which is not always possible, especially in certain situations of great distress.
- an acoustic sensor arranged in the monitoring zone and designed to convert, in an information signal, a sound wave captured resulting from an occurrence of an activity in the surveillance zone, a processing device designed to receive the information signal, and
- the acoustic sensor is a microphone sensor disposed for example near the bed of the person being monitored.
- the processing device is simply designed to convert the information signal to a sound signal reproducing with a speaker the sound signal at the origin of the acoustic wave captured. It is for example worn by a supervisor of the person located in the surveillance zone. Sound reproduction of any activity in the surveillance zone allows the supervisor to analyze what is happening. A return lane may also allow him to reassure the supervised person in real time.
- the subject of the invention is therefore an installation for monitoring a defined and predetermined surveillance zone, comprising:
- At least one acoustic sensor arranged in the surveillance zone and designed to convert, in an information signal, a sound wave captured resulting from an occurrence of an activity in the surveillance zone,
- a processing device designed to receive the information signal
- the monitoring installation further comprising:
- a database comprising, for each of at least one predetermined reference activity whose occurrence is likely to generate acoustic waves in the surveillance zone, reference characteristics relating to this predetermined reference activity,
- the processing device comprising an analysis system designed to: analyzing the information signal from the reference characteristics of at least one predetermined reference activity of the database, and
- an installation according to the invention provides real assistance to the supervisor in helping him in his diagnosis of the situation and acting itself on an alarm system.
- it may even be envisaged to dispense with a supervisor.
- a monitoring installation according to the invention may comprise, in the monitoring zone, at least one acoustic sensor of seismic waves propagating in a solid medium.
- the monitoring installation of the invention is very effective in detecting a fall of a person in the surveillance zone.
- this solid medium may comprise the floor of the surveillance zone, any information signal supplied by the acoustic seismic wave sensor is then attributable to a truly localized activity in the surveillance zone.
- seismic waves have the advantage of respecting the privacy of the person being monitored: they do not disclose the content of a conversation but are rather characteristic of footsteps, falls, vibrations, etc.
- information contained in a seismic signal is not "sensitive” but “vital”.
- the solid medium in which it propagates fulfills in a way a natural filter function that selects the right "vital" information to be analyzed by the processing device.
- acoustic sensor of seismic waves is ultrasensitive or if it is of "bi-medium” type, acoustic signals can also be sensed, but for example only to locate and verify the membership to the zone of surveillance, not to recognize words and sounds.
- the system for transmitting at least one alarm comprises a device, arranged in the surveillance zone, for generating a so-called first level alarm.
- the monitored person is thus alerted as soon as an abnormal situation is detected by the monitoring installation.
- the monitoring installation optionally also:
- the system for transmitting at least one alarm further comprises a device for generating, outside the surveillance zone, a so-called second level alarm, and
- the analysis system is designed to receive an acknowledgment signal and, if no acknowledgment signal is received within a predetermined period of time following the generation of the first level alarm, activate the generation of the second level alarm.
- a monitoring installation according to the invention may further comprise an acknowledgment device arranged in the monitoring area and activatable by a user for the generation of the acknowledgment signal.
- the monitored person can react to the generation of the first level alarm by disabling it if it is a false alarm. If it does not react, the abnormal situation is confirmed and this triggers the second-level alarm issued outside the surveillance zone, for example to the attention of a monitoring center or an identified third party. .
- the analysis system is designed to, if an acknowledgment signal is received within the predetermined time period following the generation of the first level alarm, update the reference characteristics of a predetermined reference activity of the database.
- the system thus refines its database to limit, by learning, the probability of generating first level alarms without good reason.
- the analysis system is designed to:
- the installation thus detects abnormal situations, not only when certain abnormal activities by nature are detected (falls, screams, etc.), but also according to the occurrences, too much or not enough repeated, activities a priori normal.
- the database includes, for each of a plurality of predetermined reference activities, reference characteristics relating to this predetermined reference activity.
- the subject of the invention is also a method of monitoring a defined and predetermined surveillance zone, comprising a step of receiving an information signal obtained from a conversion carried out by an acoustic sensor of an acoustic wave. resulting from an occurrence of an activity in the surveillance zone, further comprising the steps of:
- a monitoring method according to the invention can use an acoustic sensor of seismic waves propagating in a solid medium.
- the invention also relates to a computer program downloadable from a communication network and / or recorded on a computer readable medium and / or executable by a processor, including program code instructions for the execution of steps of a monitoring method as defined above when said program is run on a computer.
- FIG. 1 is a diagrammatic three-dimensional view of a delimited area equipped with a monitoring installation according to one embodiment of the invention
- FIG. 2 is a detailed perspective view of a device intended to be worn by a person, integrated into the installation of FIG. 1;
- Figure 3 illustrates the successive steps of a monitoring method implemented by the installation of Figure 1.
- the surveillance zone is taken for the sake of simplification of the illustrations as being a part 10 of an apartment 12, defined in particular by walls 10A and soil 10B.
- apartment 12 One person 13 lives in apartment 12. This is for example an elderly or sick person, who is therefore vulnerable and requires regular monitoring. In relation to his movements and his actions, the person 13 carries out various activities in the apartment 12. Each occurrence of an activity is capable of generating an acoustic wave in the air and / or in solid media, in particular the floor 10B and the walls 10A.
- the acoustic waves are generated either directly by the person 13 (vocal activity, movement in the room 10, voluntary or involuntary blow on the ground 10B and / or the walls 10A, etc.), or indirectly by the use of equipment ( moving chairs, use of household appliances, etc.).
- the apartment 12 is equipped with a monitoring facility 14 for taking advantage of these acoustic waves to detect an emergency situation in the room 10, or more generally a situation requiring intervention.
- the monitoring installation 14 comprises a plurality of acoustic sensors 16, 18, 20, 22, 26 and 30.
- Each acoustic sensor 16, 18, 20, 22, 26 or 30 is arranged in the room 10 and designed to convert, in an information signal, a sensed acoustic wave resulting from an occurrence of an activity in the piece 10, said activity detected. Note that to generalize the surveillance to the entire housing 12, it would be enough to place acoustic sensors in all its rooms.
- the monitoring installation 14 comprises acoustic sensors 16, 18, 20 and 22 of seismic waves.
- seismic waves is meant waves propagating in a solid medium.
- the acoustic sensors 16, 18, 20 and 22 of seismic waves are fixed to the ground 10B of the part 10, at fixed and known positions (for example arranged in a triangle, rhombus or rectangle as is the case in the illustrated example), and acoustically coupled to the ground 10B.
- the solid medium constituted by the ground 10B is an integral part of the surveillance zone formed by the part 10.
- the acoustic sensors 16, 18, 20 and 22 are designed to detect the seismic waves propagating in the thickness of the ground 10B and / or on its surface.
- acoustic sensors of seismic waves could also be fixed on the walls 10A.
- the size of the surveillance zone is defined, on the one hand, by the size of the acoustic sensors and their range and, on the other hand, by their configuration. This size can reach several hundred square meters, whether on the ground or in a dwelling.
- the monitoring installation further comprises an acoustic sensor 26 of air waves (but several could be provided).
- air waves means waves propagating in the air of the room 10.
- the acoustic sensor 26 of air waves is attached to one of the walls 10A of the room 10, but it is coupled acoustically to the air from the room 10, so as to fulfill a microphonic function.
- Each of the acoustic sensors 16, 18, 20, 22 and 26 of seismic and aerial waves has a fundamental resonant frequency of between 1 and 10 kHz for use in an apartment, for example 7 kHz.
- the monitoring installation 14 further comprises a portable device, for example a set of shoes 28 worn by the person 13, such as a bracelet.
- This set 28 also comprises a seismic wave acoustic sensor 30 designed to detect the acoustic waves propagating in the body of the person 13, in particular the acoustic waves resulting from the cardiac activity, breathing or sounds emitted by the body.
- This sensor is illustrated in Figure 2.
- the monitoring installation 14 further comprises a processing device 32 designed to receive each information signal of the acoustic sensors 16, 18, 20, 22, 26, 30 previously described.
- the treatment device 32 is integrated in a housing fixed on one of the walls 10A of the apartment 12.
- the monitoring installation 14 further comprises a system 34 for transmitting, to the processing device 32, information signals of the acoustic sensors 16, 18, 20, 22, 26, 30.
- the system transmission 34 comprises wire links 36 connecting the acoustic sensors of seismic waves 16, 18, 20, 22 and aerials 26 to the processing device 32.
- the adornment 28 and the processing device 32 are respectively provided with communication device wireless 38, 40 to be able to communicate with each other.
- the transmission system 34 also comprises these wireless communication devices 38 and 40.
- the wireless communication devices are for example radio wave devices, such as Bluetooth, Zigbee or Wifi devices.
- the transmission system 34 could comprise wireless communication devices, similar to the devices 38 and 40, for transmitting the information signals from the acoustic sensors 16, 18, 20, 22, 26 to the processing device 32.
- the installation 14 further comprises a system 42 for transmitting at least one alarm.
- the system 42 for transmitting at least one alarm comprises a device 44, fixedly arranged in the part 10, for generating a so-called first level visual alarm.
- the first-level visual alarm is intended to be seen by the person 13, when the latter is in the room 10.
- the system 42 for transmitting at least one alarm further comprises a device 46, arranged in a fixed manner in the room 10, generating a sound alarm also said first level.
- the device 46 is for example a loudspeaker.
- the first level audible alarm is intended to be heard by the person 13, when the latter is in the room 10.
- the devices 44 and 46 for generating a first level alarm are for example attached to the processing device 32 .
- the system 42 for transmitting at least one alarm further comprises a mobile device 48 for generating a first level visual alarm, for example an LED type diode, a mobile device 50 of generation a first-level sound alarm, for example a piezoelectric buzzer, and a mobile device 52 for generating a first-level tactile alarm, such as a vibrator for example made using a small engine with off-center weight.
- the devices 48, 50, 52 are attached to the set 28 to follow the person 15 in his movements.
- the system 42 for transmitting at least one alarm could comprise only one device for generating a first level alarm.
- the first level alarms are intended to warn the person 13 that an abnormal situation has been detected by the monitoring installation 14 and thus give him the opportunity to invalidate this detection by answering it with a message. acknowledgment, as will be explained later.
- the monitoring installation 14 may further comprise a remote monitoring center 54, or be part of such a monitoring center 54 when it is intended for example to supervise several monitoring installations.
- the monitoring center 54 is connected to a data transmission network 58, such as the Internet, and also to a wireless telecommunications network 62, such as the network of a telephone operator.
- the system 42 for transmitting at least one alarm comprises a first device 56 for generating a so-called second level alarm designed to send a second level alert message to the remote monitoring center 54 via the Internet 58.
- the second-level alarm includes, for example, an email.
- the system 42 for transmitting at least one alarm further comprises a second device 60 for generating another second level alarm for the remote monitoring center 54, via the wireless network 62.
- level includes for example an SMS or a conventional telephone call.
- the two devices 56, 60 are integrated in the processing device 32.
- the monitoring installation 14 also comprises a database 64 comprising, for each of at least one predetermined reference activity, an occurrence of which is likely to generate acoustic waves in the room 10 , reference characteristics relating to this predetermined reference activity.
- the database 64 groups reference characteristics for a plurality of reference activities.
- the database 64 is located in the processing device 32.
- the reference characteristics are intended, on the one hand, to make it possible to distinguish the reference activities from each other and, on the other hand, to determine whether a situation is abnormal in the room 10 from a repetition (or a lack of repetition) of one or more activities that occurred in the room 10, among the predetermined reference activities.
- the reference characteristics of each reference activity firstly comprise reference characteristics relating to the information signals themselves.
- these reference characteristics comprise a reference information signal representative of the corresponding reference activity.
- the database 64 associates the event "not in the room" with a reference information signal of footsteps, for example previously recorded.
- a specific reference information signal for each acoustic propagation medium for example solid, aerial, etc.
- each reference activity includes reference characteristics relating to the repetition over time of this reference activity.
- these reference characteristics comprise a datum representing a time interval considered normal between two occurrences of the reference activity considered, as well as a datum representing a threshold time interval, between two successive occurrences, beyond which the Repetition of the activity is considered abnormal, which may indicate a problem for the person 13.
- the reference characteristics may for example include (the first data in parentheses represents the normal repetition time interval, and the second data in brackets represents the threshold repetition time interval):
- the value "rare” may be associated with a predetermined interval of several days, weeks or months, adapted to the person 13.
- the value "never” means that the corresponding interval is infinite: if it is associated with a threshold interval, this means that there is no threshold value beyond which the activity considered must be considered abnormal.
- the reference characteristics relating to the repetition over time of a reference activity may be more complex.
- these reference characteristics may include a probability law over the expected time interval between two occurrences.
- the probability law is preferably centered on the normal time interval and decreases on both sides of this normal time interval.
- a difference between two occurrences of the reference activity is for example considered abnormal when its probability is more than two standard deviations of the normal time interval.
- the monitoring system 14 comprises an acknowledgment system 66 designed to generate an acknowledgment signal in response to an acknowledgment action by the receiver.
- the acknowledgment system includes a fixed acknowledging device 68, fixed on the processing device 32, and a mobile acknowledging device 70, carried by the ornament 28.
- the acknowledgment devices 68, 70 are for example push buttons.
- the processing device 32 further comprises an analysis system 72.
- an analysis system 72 In the example illustrated, it is an electronic card with automatic control of gain and signal processing.
- the analysis system 72 thus comprises a multiplexer 72A for selectively receiving the information signal coming from each acoustic sensor 16, 18, 20, 22, 26, 30.
- the analysis system 72 further comprises a broadband amplifier stage 72B, for example from 0 to 100 kHz, with a numerically programmable gain.
- the analysis system 72 further comprises a filter 72C receiving the amplified information signal and designed to locate, in the room 10, an activity detected by the acoustic sensors 16, 18, 20, 22. Preferably, the location is realized by measurement of differential transit time between at least three different acoustic sensors.
- the filter 72C is furthermore designed, if less than three sensors only detect the acoustic waves resulting from a detected activity in a time interval of less than 20 ms (to allow the detection of noise at 50 Hz), for example 15 ms , to classify the event as a parasitic (non-acoustic) electrical signal.
- the analysis system 72 further comprises a microcontroller unit (of the English "MicroController Unit” or MCU) 72D receiving the amplified information signals and able to convert them by integrated analog / digital converters.
- a computer program is loaded in the microcontroller unit 72D to perform the functions detailed below, which are also functions of the analysis system 72.
- the microcontroller unit 72D is thus designed to automatically control the gain of the amplification stage 72A, so that the information signals are amplified up to a self-trigger threshold corresponding to a situation where the signal-to-signal ratio noise is considered too degraded.
- the sensitivity level of each of the sensors is thus variable in steps, for example over a range of sixteen steps, over time while being maintained at one or two levels below a predetermined number of false trips, for example less 50 false triggers per second.
- the microcontroller unit 72D is further adapted to compare the intensity of each amplified information signal with a predetermined threshold level, indicating, when exceeded, that the corresponding acoustic sensor is picking up acoustic waves resulting from an activity. , said activity detected, in the room 10.
- the microcontroller unit 72D is designed to record the information signal of at least one acoustic sensors having sensed the acoustic waves resulting from detected activity.
- the information signals are slidably recorded for a maximum of 5 seconds to ensure that the privacy of the person 13 is respected.
- the microcontroller unit 72D is also designed to analyze the recorded information signal (s), based on the reference characteristics of at least one of the reference activities of the database 64. Specifically, the 72D microcontroller unit is designed to consult the reference characteristics relating to reference information signals, in order to determine, from these reference characteristics, a predetermined reference activity of the database 64 corresponding to the activity detected. In the illustrated example, the microcontroller unit 72D is designed to correlate each recorded information signal with the reference information signals, in order to identify the detected activity as corresponding to the most strongly reference activity. correlated.
- the microcontroller unit 72D is designed to activate at least one of the first level alarm generating devices 44, 46, 48, 50, 52, to inform the person 13 that an abnormal situation has been detected by the monitoring installation 14.
- the microcontroller unit 72D is further designed to precisely date the occurrence of the reference activity corresponding to the activity detected and to record this date of occurrence. As indicated above with the definition of reference characteristics relating to the time-repetition of each reference activity, this makes it possible, for example, to detect an abnormal situation on the basis of an abnormal frequency of the detected occurrences of the reference activity considered. .
- the microcontroller unit 72D is further adapted to estimate at a given instant the time interval that has elapsed between that given instant and the date of the last recorded occurrence of each reference activity.
- the time interval thus estimated for a given activity is compared with the threshold repetition time interval of this activity. This estimate makes it possible to determine which reference activity (s) have an abnormal repetition.
- the microcontroller unit 72D is designed to make this estimate at regular intervals.
- this regular interval is shorter while an activity is being detected by the acoustic sensors, for example 1 second instead of 5 seconds when no activity is detected.
- the microcontroller unit 72D is further adapted to activate the system 42 for transmitting at least one alarm based on this estimate of the elapsed time since the last occurrence of each reference activity. More specifically, the microcontroller unit 72D is programmed to activate the system 42 for transmitting at least one alarm as a function of the reference activities whose repetition is determined to be abnormal, on the basis of a following rule system, for example a law of probability that a situation is abnormal as a function of abnormal repetitions of one or more activities.
- the microcontroller unit 72D is designed to activate at least one of the first level alarm generating devices 44, 46, 48, 50, 52, to inform the person 13 that an abnormal situation has been detected by the monitoring installation 14.
- the microcontroller unit 72D is further adapted to receive an acknowledgment signal from the person 13 and, if no acknowledgment signal is received within a predetermined period of time (eg 1 minute). at the generation of the first level alarm, activate at least one of the second level alarm generating devices 56, 60.
- a predetermined period of time eg 1 minute
- the acknowledgment signal is either the signal generated by the acknowledgment system 66, or a specific reference activity (such as hitting in his hands) performed by the person 13 in the room 10 and detected by the monitoring facility 14 as previously described.
- the microcontroller unit 72D is designed to update the reference characteristics of at least one of the reference activities in the database 64.
- the microcontroller unit 72D is designed to update the reference characteristics of reference activities whose repetition has been detected as abnormal and the cause of the alarm. first level. The purpose of this update is to adapt the database 64 to the life cycle of the person 15.
- the threshold repetition time intervals are initialized to low values, or adjusted following a questionnaire.
- updating the reference characteristics of a reference activity includes increasing the threshold time interval between two occurrences of this reference activity.
- the remote monitoring center 54 comprises a display device 74 of a plane of the part 10 (or more generally of the housing of the person 13).
- the display device 74 is then designed to display, on request, the position on this plane of the last occurrences of the reference activities detected in the room.
- the display device is further adapted to display a list of the latest occurrences of the reference activities detected in the monitoring area.
- the acoustic sensors continuously generate the information signals which are transmitted to the processing device 32 by the transmission means 34.
- an activity is produced in the room 10, for example the person 13 moves while walking, causing foot impacts on the ground.
- the activity generates acoustic waves in the room 10 that propagate in the air and / or in the ground.
- the information signal resulting from the acoustic wave captured is transmitted via the transmission system 34 and is received, during a step 106, by the analysis system 72 . Then, during a step 108, the microcontroller unit 72D compares the intensity of each (amplified) information signal with a predetermined threshold level, and determines which acoustic sensor (s) is picking up. acoustic waves resulting from an activity, said activity detected, in the room 10.
- the microcontroller unit 72D records the information signal of at least one of the acoustic sensors sensing the acoustic waves resulting from the detected activity.
- the microcontroller unit 72D analyzes the recorded information signal (s), using the reference characteristics of at least one of the reference activities of the database 64 , and determines the reference activity corresponding to the detected activity. In this case, it is a step noise.
- the microcontroller unit 72D does not activate at this stage the devices for generating a first level alarm.
- the microcontroller unit 72D dates the occurrence of the reference activity corresponding to the activity detected and records the date of occurrence of this reference activity.
- the microcontroller unit 72D estimates the time that has elapsed since the date of the last recorded occurrence of each reference activity. From the reference characteristics related to the normal occurrences or limits of the reference activities, the microcontroller unit 72D determines which reference activity (s) has (have) an abnormal repetition.
- step 1 16 If during step 1 16 at least one reference activity is detected as having an abnormal repetition, then in the following step 1 18, the microcontroller unit 72D activates at least one of the generation devices a first level alarm 44, 46, 48, 50, 52.
- the person 13 possibly responds to the first level alarm by returning an acknowledgment signal, either by using the acknowledgment system 66, or by carrying out the reference activity of aforementioned acknowledgment.
- Step 120 is followed by a step 122, in which the microcontroller unit 72D waits for the acknowledgment signal. If no acknowledgment signal is received within a predetermined time period (for example 1 minute) following the generation of the first level alarm (step 1 18), the microcontroller unit 72D activates, during a step 124, at least one of the second level alarm generating devices 56, 60.
- a predetermined time period for example 1 minute
- the microcontroller unit 72D updates in a step 126 the reference characteristics of at least one of the reference activities in the database 64 (in our example, update of the step noise activity).
- the invention makes it possible to identify an abnormal situation or to recognize a distress signal coming from persons living alone or isolated in an apartment, a building or more generally a delimited area of surveillance.
- the monitoring installation of the invention is very effective for detecting a fall of people in the surveillance zone, by the use of acoustic sensors, and in particular acoustic sensors of seismic waves.
- the acoustic sensors can be adapted to any physical medium wave propagation seat, be it a solid medium, liquid or gaseous (air).
- the treatment device 32 is not necessarily disposed in the surveillance zone. It can be remotely deported, including a monitoring center of several surveillance zones.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Gerontology & Geriatric Medicine (AREA)
- Multimedia (AREA)
- Engineering & Computer Science (AREA)
- Psychiatry (AREA)
- Psychology (AREA)
- Social Psychology (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0957175A FR2951303B1 (fr) | 2009-10-13 | 2009-10-13 | Installation et procede de surveillance d'une zone delimitee et predeterminee a l'aide d'au moins un capteur acoustique |
| PCT/FR2010/052075 WO2011045500A1 (fr) | 2009-10-13 | 2010-09-30 | Installation et procede de surveillance d'une zone delimitee et predeterminee a l'aide d'au moins un capteur acoustique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2489024A1 true EP2489024A1 (fr) | 2012-08-22 |
| EP2489024B1 EP2489024B1 (fr) | 2015-02-25 |
Family
ID=42167282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10778690.7A Not-in-force EP2489024B1 (fr) | 2009-10-13 | 2010-09-30 | Installation et procede de surveillance d'une zone delimitee et predeterminee a l'aide d'au moins un capteur acoustique |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8830059B2 (fr) |
| EP (1) | EP2489024B1 (fr) |
| CN (1) | CN102630324B (fr) |
| FR (1) | FR2951303B1 (fr) |
| WO (1) | WO2011045500A1 (fr) |
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| US9232046B2 (en) * | 2010-07-21 | 2016-01-05 | Tksn Holdings, Llc | System and method for controlling mobile services using sensor information |
| US11288472B2 (en) | 2011-08-30 | 2022-03-29 | Digimarc Corporation | Cart-based shopping arrangements employing probabilistic item identification |
| US9367770B2 (en) | 2011-08-30 | 2016-06-14 | Digimarc Corporation | Methods and arrangements for identifying objects |
| JP5953721B2 (ja) * | 2011-10-28 | 2016-07-20 | セントラル硝子株式会社 | 保護膜形成用薬液の調製方法 |
| CN102693600B (zh) * | 2011-12-14 | 2014-07-16 | 河南科技大学 | 一种单元式灾害控制方法及系统 |
| TWI497424B (zh) * | 2012-12-14 | 2015-08-21 | Univ Tajen | 人體姿態動作辨識系統 |
| ITAN20130056A1 (it) * | 2013-03-18 | 2014-09-19 | Paolo Olivetti | Sistema per la rilevazione e prevenzione di caduta anziani,, mediante cassa di risonanza a pavimento |
| US10515309B1 (en) * | 2013-09-20 | 2019-12-24 | Amazon Technologies, Inc. | Weight based assistance determination |
| US10664795B1 (en) | 2013-09-20 | 2020-05-26 | Amazon Technologies, Inc. | Weight based item tracking |
| US10657411B1 (en) | 2014-03-25 | 2020-05-19 | Amazon Technologies, Inc. | Item identification |
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2009
- 2009-10-13 FR FR0957175A patent/FR2951303B1/fr not_active Expired - Fee Related
-
2010
- 2010-09-30 EP EP10778690.7A patent/EP2489024B1/fr not_active Not-in-force
- 2010-09-30 US US13/501,863 patent/US8830059B2/en not_active Expired - Fee Related
- 2010-09-30 WO PCT/FR2010/052075 patent/WO2011045500A1/fr not_active Ceased
- 2010-09-30 CN CN201080053372.0A patent/CN102630324B/zh not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| US8830059B2 (en) | 2014-09-09 |
| FR2951303B1 (fr) | 2012-04-06 |
| FR2951303A1 (fr) | 2011-04-15 |
| CN102630324B (zh) | 2014-12-03 |
| WO2011045500A1 (fr) | 2011-04-21 |
| EP2489024B1 (fr) | 2015-02-25 |
| CN102630324A (zh) | 2012-08-08 |
| US20120262294A1 (en) | 2012-10-18 |
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