FR3088460A1 - MINIATURIZED FREQUENTATION CAPTURE DEVICE - Google Patents

Description

Description

Title of the invention: Miniaturized attendance capture device [0001] The object of the present invention relates to a attendance capture device, its use, as well as a method for implementing this device in a passage space.

Counting devices, in particular of people, generally seek to obtain the greatest possible measurement accuracy. Thus, the state of the art is rich in teaching as to propose means for determining the direction of passage of the entities counted, distinguishing the nature of the entity (living being, object, vehicle, etc.) in order to discriminate the entities not wanted. However, generally in the field, in order to avoid disrupting the passage, the introduction of narrowing necks which are intended to organize the entities in a row which is easier to count is not desired. Indeed, this last step has the disadvantage of slowing the passage. In general, to obtain the best results in terms of reliability, the state of the art has increased the number of counting means arranged on a passage space to "screen" the area considered. For example, a multitude of beams / sensors placed in a particular passage area makes it possible to study the displacements of the entities considered and therefore to increment or not the counting. This results in heavy infrastructure that is very difficult or even impossible to move. Patent documents W00033261, EP0828233, WO9408258, FR2739203, WO9816801, US4278878, WO01 / 88858, US4000400, FR2644269, US2018046860 illustrate this type of embodiment.

In patent document FR2899003, the object described relates to a device for counting and determining the direction of passage of living beings comprising two cells and a processing unit. However, the device described is not autonomous, is not connected and requires an additional counting device with means for storing or transmitting the collected data. In addition and very concretely, this type of device is of relatively large size and weight for several reasons. On the one hand, the various electronic elements constituting this device as they are described are very energy intensive, particularly for continuous use. Indeed, in an approach of measurement accuracy, which is inherently sought in this field, the sensors used require fairly significant processing units (processors), in particular when the processing is continuous, which also implies also relatively large power supply means, all in a housing which can suitably accommodate a significant weight load. Thus, this type of device easily reaches several kilograms, or even several ten kilograms. The financial cost of such an installation is in proportion.

Thus, the state of the art does not really have a simple, light, discreet, small, inexpensive, reliable and robust automatic device, respectful of the law of protection of private data for punctual use of counting ranging up to a few thousand or even ten (s) of thousands of entities. In addition, such a punctual use is part of a rental logic, where the sending of the device by mail, so that it can be interesting and profitable, must be of a limited size and must not exceed one kilogram, even a few kilograms. Thus, for example, on the day when the present invention was made, there was no low-cost passage sensor rental service for measuring public attendance during specific events such as association forums, festivals free themes (science weeks, Christmas markets, etc.). In addition, there is currently no device on the market that the customer can install quickly and easily himself. As explained above, only fixed passage sensors existed (shopping centers, museums, road traffic) and mobile sensors for outdoors, heavy and bulky and therefore unsuitable for temporary rental for occasional public events, for example example of a few days. In addition, such rental use requires ease and speed of implementation, possibly with a tracing system of the counting device, while allowing the user to be able to observe the counting almost in real time (via smartphone, for example). Such use also requires a certain robustness of the device. Such problems do not even seem to be addressed in the state of the art.

The object of the present invention provides several points of innovation for providing a device that meets these specifications.

SUMMARY OF THE INVENTION The object of the present invention relates to a device for capturing attendance comprising an autonomous energy source and / or a charging interface and / or an external power supply means, said device being characterized in that:

(a) it has a total mass of less than 2 kg, preferably less than or equal to 500 g, and (b) it comprises, in the same housing:

- at least one passage sensor,

a means of storage and / or transfer of data preferably in real time, and

- A management and processing unit, adapted to count the number of passage (s) in front of said sensor, to manage the operation of said sensor, and to manage said storage and / or said data transfer.

The object of the present invention also relates to a magnetic operation switch, preferably adapted to the device as described herein, characterized in that it comprises:

- at least one magnetizing conductive element preferably in contact with the external environment, such as a case fixing screw possibly extended by a screwing insert,

- at least one magnetic detector, for example Hall effect, arranged so as to be close to said magnetism conducting element,

optionally a second magnetic detector, for example Hall effect, arranged so as to be distant from said magnetism conducting element, and

- Optionally a magnetic element, for example a magnet adapted to stick by magnetism to said at least one magnet conductive element such as the case fixing screw. It is understood that the magnetism conducting element can be placed close to the location where the magnetic element, for example a magnet, is glued, so as to conduct the magnetism to the hall effect sensor. The magnetic element, for example a magnet, can also be glued close to the hall effect sensor.

The object of the present invention further relates to the use of the device as described herein for counting living beings and / or moving objects, said device being preferably used for rental.

The object of the present invention further relates to a method for counting living beings and / or objects in transit in a passage space, characterized in that the method comprises at least one device as described herein, said passage space being preferably segmented into passage plots to place several of said devices in the different plots thus delimited, so as to increase the counting accuracy.

DEFINITIONS By "attendance capture device", it is understood in the present invention a device for measuring passage in a particular delimited area of a number of entities, such as living beings, more particularly humans (men and / or women), or moving objects, more particularly vehicles. By vehicle, it is understood any vehicle for locomotion of people, animals or freight, loaded or empty, such as cars, trucks, motorcycles, bicycles, etc.

By "autonomous energy source", it is understood in the context of the present invention a means of supplying energy, such as electricity, which can be independent of any public network. Such an autonomous energy source can take the form of a battery, a battery or a battery when this source is inside the housing of the device according to the present invention. The term autonomous can also refer in the context of the present invention to means external to the housing for generating energy, such as solar panels.

By "passage sensor", it is understood in the context of the present invention an optoelectronic component for transforming an optical signal into an electrical signal, preferably of a digital nature. For example, the pass sensor has an infrared sensitivity and when an infrared signal is received, the sensor emits an electrical signal.

By "data storage means", it is understood in the context of the present invention any means for retrieving information, to keep it in memory, then to restore it.

By "data transfer means", it is understood in the context of the present invention any means for transmitting data outside the device according to the invention. The transmission can be wired, or wireless for example by electromagnetic waves.

By “real-time data transfer means”, it is understood in the context of the present invention a data transfer means as defined above transferring the data as they are generated allowing for example to consult the data as and when they are collected, for example via a computer or a smartphone. This transfer is advantageously carried out automatically once the device is put into operation and no longer requires human intervention for the transfer of data. This transfer can also be automatic, for example after a quantity of data of a determined size has been generated and / or after a time determined according to the capabilities of the device or quite simply of the will of the user. For example, such a real-time data transfer can be characterized by a transfer whose execution frequency is less than or equal to two hours after it is put into operation, or even less than or equal to 1 hour, less than or equal to 45 minutes. , less than or equal to 30 minutes, less than or equal to 35 minutes, less than or equal to 20 minutes, less than or equal to 15 minutes, less than or equal to 10 minutes, less than or equal to 5 minutes, less than or equal to 4 minutes, less than or equal to 3 minutes, less than or equal to 2 minutes, or a transfer whose execution frequency is less than or equal to 1 minute.

By "management and processing unit", it is understood in the context of the present invention an element for managing the operation of other elements included in the device according to the present invention. In addition, this unit allows the processing of data, that is to say recovering the signals coming from the passage sensor, processing them to make them data which can then be transmitted to the storage and / or data transfer means. . The management and processing unit also advantageously performs its tasks in a time-organized manner by means of a clock (internal or external to said unit).

By "magnetic operation switch", it is understood in the context of the present invention a means of operation (ie able to count and store and / or transmit data) or stop the device according to this invention. The fact that the operation is magnetic, inherently implies the presence of a magnetic detector, for example Hall effect, arranged to detect the presence or not of a magnetic element, such as a magnetized part.

By "rental", it is understood in the context of the present invention a provision of the device according to the present invention for a given period of time. This specificity of use implies particular technical characteristics (e.g. simplicity, robustness, ease of implementation, etc.) of the device according to the present invention.

By "passage space", it is understood in the context of the present invention the area where the attendance (i.e. the passage of entities as defined above) wants to be determined. This passage space can be segmented into several "passage plots". In each of these plots is then positioned a device according to the present invention, so that the passage takes place effectively in front of the sensor.

DETAILED DESCRIPTION [0023] Device [0024] The object of the present invention thus relates to a device as described herein, characterized in that:

- the device is autonomous,

- attendance is related to living things, such as humans, or moving objects, such as cars,

- the housing is waterproof,

- the box is immobilized and locked at a fixed point, and / or

- the internal energy source is a battery or a battery whose power is less than 100 W / h, 80 W / h, 50 W / h, 40W / h, 30 W / h, 20 W / h, 10 W / h , 5 W / h, or even less than 2W / h.

Preferably, the internal energy source such as a battery or a battery, has a power is between 2 W / h and 100 W / h, between 5 W / h and 80 W / h, between 10 W / h and 50 W / h, or even between 20W / h and 40 W / h. More preferably, the internal energy source such as a battery or a battery, has a power is between 2 W / h and 40 W / h, between 3 W / h and 20 W / h, between 4 W / h and 10 W / h, or even between 4.2W / h and 5 W / h, preferably 4.5W / h (± 0.5W / h).

The object of the present invention thus relates to a device as described herein, characterized in that the housing is made of an organic material, such as a plastic polymer, or of a metal or metal alloy.

The housing used in the device according to the present invention advantageously has a reduced size, for example being able to be inserted into a rectangular parallelepiped PR of length L1 less than 30 cm, of width L2 equal to or less than 25 cm, of height H equal or equal to or less than 25 cm. Preferably, the rectangular parallelepiped PR has the following characteristics.

- a length L1 equal to or less than 20 cm, a width L2 equal to or less than 15 cm, a height H equal or less than 15 cm,

- a length L1 equal to or less than 15 cm, a width L2 equal to or less than 10 cm, a height H equal to or less than 10 cm,

- a length L1 equal to or less than 10 cm, a width L2 equal to or less than 8 cm, a height H equal to or less than 8 cm, or,

- a length L1 equal to or less than 7 cm, a width L2 equal to or less than 5 cm, a height H equal to or less than 5 cm.

Preferably, the housing according to the present invention can be inscribed in a rectangular parallelepiped PR having the following characteristics: a length L1 equal to or less than 10 cm, a width L2 less than 8 cm, a height H less than 4 cm.

The object of the present invention thus relates to a device as described herein, characterized in that it has a total mass less than or equal to 4 kg, 3kg, 2.5 kg, 2kg, 1.5 kg, 1kg, 900g, 800g, 700g, 600g, 500g, 400g, 300g, 200g, or even less than or equal to 150g.

The internal energy source can be a battery or a battery. Any type of battery or accu can be used as long as it makes it possible to be included in the device according to the present invention. For example, a CR123 NiMnO2 battery delivering a voltage of 3V and a capacity announced at 1500mAHrs can allow use up to 4 weeks in the field. Lithium polymer batteries are also quite suitable for the device according to the present invention. Advantageously, the operation of the device according to the present invention is at a voltage less than 24V, for example between 1 and 12 volts, between 2 and 10 volts, between 2.5 and 8 volts, between 2.8 and 5 volts , preferably between 3 and 4 volts, for example 3.5 volts ± 0.4 volts. Preferably, the operation of the device according to the present invention is at a voltage of 3.2 volts ± 0.3 volts.

The management and processing unit can also comprise a battery management system ("BMS" in English).

The device as described herein can be characterized in that said at least one passage sensor is a digital sensor, such as a digital optical sensor or a digital bus thermal sensor, preferably associated with a Fresnel lens, and said at least one sensor can optionally be associated with at least one second precision sensor adapted to operate on signal from the first passage sensor.

Indeed, two types of sensors can be used in the context of the present invention: electrical sensors and / or digital sensors. Electrical sensors are also commonly known as analog sensors. However, advantageously, the digital sensors make it possible to significantly reduce the electrical consumption of the device according to the present invention. Indeed, the signal from such digital sensors is much simpler to process and does not require the use of filters to obtain a usable signal. Thus, the general consumption of the device with such a digital sensor is reduced compared to the consumption of the same device, but equipped with an electrical (analog) sensor and with a signal filtering means in place of the digital sensor.

Thus, even if an optical sensor can be used, the digital bus thermal sensor, such as an infrared digital bus sensor, is the preferred sensor for the device according to the present invention, for reasons of cost, efficiency , power consumption and / or ease of implementation. These thermal infrared sensors also have the particularity of being very little sensitive to wind and rain.

In order to limit the electrical consumption, it can be quite envisaged to add several sensors in the same device. Thus, a first sensor with very low consumption, but of very low precision, can be used during a passage in front of said device to send an active start-up signal to one or more other sensors much more sensitive and precise in their detection. . The precise sensors then go from a standby state or even off to their full detection capacity, at least sufficient capacity, to complement or even replace the data possibly obtained by the first sensor. Several types of sensors can therefore be used on the same device. For example, one (or more) first low-consumption thermal type sensor with digital bus with a low pixel number (eg less than or equal to 10, 8, 6, 4, 2 or even 1 pixel) can be supplemented by a second much more precise sensor, such as an optical or thermal sensor, with a much higher number of pixels (eg greater than or equal to 50, 100, 500, 1000, 5000, 10000, 15000, 20000 or even 30000 pixels) .

The device as described herein can be characterized in that the Fresnel lens is placed at a first end of a tube of a length adapted so that at the second end of said tube is placed the passage sensor in the plane focal of the Fresnel lens.

The Fresnel lens used can be of the type commonly used in infrared digital thermometers. The sensor is positioned at the focal point of the Fresnel lens. Depending on the quality of the lens, and depending on the conditions of the moment (for example thermal in the case of a thermal sensor), the range of the passage detection can reach approximately 8 meters with standard polyethylene lenses.

For example, a thermal infrared sensor associated with a Fresnel lens makes it possible to target a thermal scene with reduced surface area. This is an important condition for counting because a too large and above all heterogeneous scene would generate thermal signals that are difficult to analyze. To further limit the scene and protect the lens from direct stray light, a "telephoto" effect has been added by placing the lens at the end of a tube. For example, the diameter of the tube can be 9mm and a depth of 10mm.

The device as described herein can be characterized in that said at least one passage sensor is adapted to determine the direction of passage.

The device as described herein can be characterized in that said at least one passage sensor comprises at least three active detection units and at least one reference detection unit, said detection units are for example each at least a pixel of the matrix (eg thermal).

In order to respond to the problem of the stagnation of entities / people in front of the passage sensor, the device can also be configured to accommodate a counting algorithm defining that a passage is equivalent to a positive signal in front of the sensor (ie an entity appearing in front of the sensor which therefore emits a signal) followed by a negative signal ((ie no entity in front of the sensor).

The object of the present invention thus relates to a device as described herein, characterized in that the charging interface is also a means of data transfer, such as a USB socket or a micro-USB socket.

The device as described herein can be characterized in that the data transfer means uses a wired network, such as via a USB socket or a micro-USB socket.

Thus, the device as described herein can be characterized in that the charging interface is wired, such as a USB socket, a micro-USB socket, and / or a mains socket, and / or wireless such as a current receiving induction hob.

The device as described herein can be characterized in that the data transfer means comprises or consists of an electronic data transfer card possibly integrated in the management and processing unit, allowing for example to use a wireless network such as a Bluetooth, Wifi network, a mobile telephone network and / or an IOT (“Internet Of Things”) network such as Sigfox or LoRa.

The Sigfox network is the first of the Internet of Things communication networks to be set up. Preferably, the network used is the Sigfox network. This type of network is known to be particularly efficient in terms of radio data transmission energy.

The device as described herein can be characterized in that the data transfer means uses a global computer network such as the Internet.

The object of the present invention thus relates to a device as described herein, characterized in that the data storage means is an SSD storage memory, such as a storage card type SD card, micro card -SD, flash card, or a storage memory included in one of the elements of said device, for example in management and processing unit.

The device as described herein can be characterized in that the data storage means is suitable for automatic storage segmented in the first time, possibly implemented by the management and processing unit, for example stored in slices of 15 minutes. This storage can be adapted to the case in point, for example the data can be stored in periods of durations of between 1 minute and 1 hour, 2 minutes and 50 minutes, 3 minutes and 40 minutes, 4 minutes and 30 minutes, 5 minutes and 20 minutes, or between 10 minutes and 15 minutes. The data thus stored can also be transmitted in real time at these same time intervals.

The object of the present invention thus relates to a device as described herein, characterized in that it further comprises a real time RTC clock. Preferably, this real-time RTC clock is included in the management and processing unit.

The object of the present invention thus relates to a device as described herein, characterized in that the management and processing unit is associated with at least one LED, preferably two LEDs, to allow visual control of the counting , preferably from outside said device, for example by means of a transparent window, advantageously sealed.

The device as described herein can be characterized in that:

- said at least one passage sensor,

- said means for storing and / or transferring data, and

- Said management and processing unit, are each adapted to be in continuous operation or in alternation with low electrical consumption. The object of the present invention thus relates to a device as described herein, characterized in that each sensor of passage has low power consumption, for example with a consumption in standby mode less than 50 microamps (μΑ), and in counting mode less than 300 μ A, preferably less than 100 μ A.

The device as described herein can be characterized in that the data transfer means is suitable for having an electrical consumption of less than 500 milliamps (mA), 400 mA, 300mA, 200 mA, 100 mA, 50 mA, 40 mA, 30 mA, 20mA, 10 mA, 5 mA, 2 mA, or even less than 1 mA.

The device as described herein can further be characterized in that the management and processing unit is suitable for operation with low power consumption, in particular with a standby mode. The device as described herein may for example have a consumption of between 60 pA (microamps) and 1 mA (milliamp), between 120 pA and 500 μΑ, or even between 150 μ A and 250 μ A. Preferably, the device as described now has a consumption less than or equal to 1 mA, less than or equal to 500 pA, less than or equal to 250 μ A, less than or equal to 150 μ A, less than or equal to 120 μ A, less than or equal to 60 pA.

The device as described herein can be characterized in that the data transfer means is suitable for intermittent operation, for example suitable for transmission every hour, every 45 minutes, every 30 minutes, every every 15 minutes, every 10 minutes, every 5 minutes, or every minute.

The device as described herein can be characterized in that the data transfer means is adapted to intermittent operation, for example adapted to a transmission of less than 1 minutes, 45 seconds, 30 seconds, 20 seconds, 15 seconds, 10 seconds, or even less than 5 seconds.

The device as described herein can be characterized in that the management and processing unit comprises at least one of the following elements:

- said storage (also called "memory") and / or data transfer means,

- a central unit (comprising a processor, also called a "CPU") with a management of a time base adapted to the scanning of said at least one passage sensor,

- a counting unit possibly adapted for time stamping of the data, and / or

- A real-time RTC clock The device as described herein can be characterized in that said device also comprises a GPS module (eg low consumption or intermittent operation) making it possible to increment the data generated and collected at a place geographical. GPS also makes it possible to locate the device in the event of a malicious act.

The device as described herein can be characterized in that said device further comprises a switch for starting and / or stopping operation, preferably with magnetic operation, comprising for example at least one Hall effect detector adapted to detect the presence or absence of artificial magnetic fields external to said device.

The presence of a switch on the device according to the present invention, for example a magnet fixed to one of the fixing screws of the housing, can allow the sensor to have a mode called "low consumption" guaranteeing it an extended minimum operating time, for example up to 6 months. This mode makes it possible not to have a non-functional battery at the time of counting, which would be linked to possible delays in transport and / or storage of the device.

In addition, a mobile viewing site on a network such as the Internet can be offered. The presence of a switch on the device according to the present invention, for example a magnet fixed to one of the fixing screws of the housing, can allow the sensor to transmit its data to the mobile viewing site only during the duration of the public event. This site can interact with the device to notify the user of a possible anomaly, or communicate the latest results, or any other useful message.

Thus, the presence of a switch on the device according to the present invention, for example of a magnet fixed on one of the fixing screws of the housing, in the context of a rental of the device, can allow the lessor (the one who offers the rental device) to be automatically informed of the actions of the user (tenant) by issuing specific information messages that help secure the rental process.

The presence of a switch on the device according to the present invention, for example of a magnet fixed on one of the fixing screws of the housing, allows the customer to be able to control for a few minutes the proper functioning of the sensor at using LEDS flash before the system reduces its consumption.

The device as described herein can also be characterized in that the switch is accessible from outside the housing and is preferably waterproof.

It is an object of the present invention to provide a switch specifically developed for the device according to the present invention. The Applicant proposes an actuatable switch by removing a magnet from the housing. By removing this magnet, the box goes from a standby mode to an active mode. In addition, the very simple use of a magnet (which can be powerfully) fixed to the housing, to an element of the housing, such as a structural element of the housing, for example a screw (eg via a screw head, for example d '' a case fixing screw possibly extended by a screwing insert), can allow greater reliability than the use of an ON / OFF button for the following reasons:

- prevent counting to be stopped by a third party who would activate a visible switch;

- Improving the sealing of the housing (the magnet fixed to a component of the housing does not create any new fragility in terms of sealing) The device as described here can be characterized in that the Hall effect detector is close to the outside of said device or is close to a magnetism conducting element, such as a fixing screw of the housing, where at least a part of said conducting element is also close to the outside of said device, so as to conduct at least one artificial magnetic field external to said device.

The device as described herein can be characterized in that the switch comprises:

- at least one conductive element of magnetism preferably in contact with the external environment, such as a fixing screw of the housing possibly extended by a screwing insert,

at least one first magnetic detector, for example Hall effect, arranged so as to be close (less than 5 cm or 1 cm for example) of said magnetism conducting element,

- optionally at least one second magnetic detector, for example with an effect

Hall, arranged so as to be away from said magnetism conducting element and away from a magnetic (magnetized) element of the device, and

- optionally a magnetic element, for example a magnet adapted to come and stick by magnetism to said at least one conductive element of magnetism such as said housing fixing screw possibly extended by a screwing insert. Said at least one magnetic element can thus be positioned so as to be detected by said at least one first magnetic detector [0069] Thus, in a particular embodiment, the presence of a second magnetic detector remote from said magnetizing conductive element makes it possible to '' act as a repository vis-à-vis the external environment, in case the device according to the present invention should pass through an external magnetic field independent of it unintentionally triggering the switch (in the absence of a repository) .

The object of the present invention also relates to a device as described herein, characterized in that a single internal support to said device, such as an electronic circuit, comprises both the management and processing unit , an energy source, the storage means, the data transfer means, and / or if necessary a magnetic operation switch.

The device as described herein can be characterized in that the single support such as an electronic circuit described above, is internal to the housing.

Thus, preferably, the object of the present invention relates to a traffic capture device comprising an autonomous energy source and / or a charging interface and / or an external power supply means, said device being characterized in that than :

(a) it has a total mass of less than 500g, preferably less than or equal to 300g, and (b) it comprises, in the same housing:

- at least one passage sensor capable of detecting and characterizing the direction of passage,

a means of storage and / or transfer of data preferably in real time, for example in periods of 15 minutes,

a management and processing unit, adapted to count the number of passages (s) in front of said sensor, to manage the operation of said sensor, and to manage said storage and / or said data transfer,

a magnetic switch, preferably sealed, as described above, with a first magnetic detector and possibly a second reference magnetic detector, and

- Optionally, a magnetic element positioned to be detected by said first magnetic detector [0073] Switch [0074] The object of the present invention also relates to a magnetic switch for the device according to the invention, the characteristics of which are given above in the context of said device.

In addition, the present invention also relates to the use of the device described here for counting entities passing through passage space.

Thus, the object of the present invention relates more precisely to the use of the device described here for counting a number of people passing through a passage space.

Preferably, the present invention relates to the rental use of the device described here for counting entities passing through passage space.

In addition, the present invention also relates to a method as described above, for counting living beings and / or objects in transit in a passage space.

Advantageously, the method according to the present invention can be characterized in that said passage space is segmented into passage plots to place several devices according to the present invention. This procedure increases the measurement accuracy.

In addition, the method according to the present invention can be characterized in that said passage space or passage plots, if necessary, is or are limited so as to channel in one or more Indian queues the flow of living beings and / or moving objects.

In addition, the method according to the present invention can be characterized in that the passage space for people or plots for the passage of people is a private or public passage, placed at the entrance of a vehicle or a place of meeting (s) of people, such as during a public event, a private party, in a shopping center, or even in a business center.

FIGURES [Fig. 1]: The figured represents the general principle of counting. It can be seen that the device is placed here in a bottleneck making it possible to count more reliably the number of people (P) and / or objects passing through the counting field (C). FIG. 1A shows an example of a bottleneck where a device (D) according to the present invention is positioned. Figure 1B shows the illustration according to Figure 1A with a passage of two people (P) in the bottleneck.

[Fig.2]: Figure 2 shows the device according to the present invention broken down into these different elements. Thus, the housing (1) is shown; an optional seal (2); a Fresnel lens (3), the assembly (4) of the sensor with the Fresnel lens placed at a first end of a tube of suitable length so that at the second end of said tube is placed the passage sensor (5 ) in the focal plane of the Fresnel lens; (6) transfer unit (card) (e.g. SiPy); (7) battery holder (e.g. CR123); (8) electronic card of the management and processing unit where the storage (not shown here) and / or transfer unit, and the battery support (7) are also supported. Figure 2 also shows the optional special case where two sensors (5, 9) are inserted in the same housing. The second sensor (9) is assembled in the same way as its counterpart (5) behind a second Fresnel lens (10).

[Fig.3]: Figure 3 shows the magnet switch having been developed specifically in the context of the present invention. Thus, it can be seen in Figure 3: the hall effect sensor (CH), the communication card (CC), a representation of the magnetic field (CM) generating the hall effect, the magnet (A). Thus, by removing (down arrow in Fig. 3) the magnet (A) attached to the case by magnetism (for example to a head of the case structure screw), the magnetic field moves away from the case. The Hall effect sensor no longer detects the magnet and sends a signal to the management and processing unit. The latter can then come out of a standby state and the counting begins, for example by an information message sent by the transfer unit, if necessary, and / or by the sending of a signal to an LED. visible from the outside of the housing. By putting a magnet back on the box (arrow up in Fig. 3 in the case where the magnet A is reused), the process is reversed and the management and processing unit can then go into standby mode, possibly accumulated by a last sending of signals by the transfer unit, if applicable. The other units (such as the transfer unit) can of course also go into low power standby mode.

EXAMPLES Example 1: device created [0090] A device according to the present invention was created using the following parts:

- Housing: ABS housing of dimensions 101 x 77 x 40

- Central unit of weak: card is architecture around the microcontroller "MSP430F248®".

- Digital matrix thermal sensor: mechanically installed independently of the electronic card; the connection with the card is made by a wired connection of 3 wires.

- Battery: CR123 NiMnO2, voltage of 3V, announced capacity of 1500 mAHrs

- Sigfox communications card: “SiPy®” cards (from the manufacturer PyCom®)

- Internal storage of quarterly counting results: "I2C 24LC256®" memory

- Switch: electronic card fitted at 2 ends with hall effect electromagnetic sensors.

The assembly of the various elements listed above is simple to implement to obtain a device according to the present invention.

Example 2: device tested [0093] Devices according to example 1 were tested according to the following protocols:

Scripted tests of passage at 1 meter, 4 meters and 7 meters with single passages and double passages in both directions. Video footage associated with algorithmic data measurements was recorded using KDLINK® software for replay and analysis. Developments in the use of the algorithm led to an accuracy of +/- 5% on scenarios of unitary and grouped passages (excluding stagnation and masking).

Field tests were carried out repeatedly at the entrance / exit of the "Gaulois Village of Pleumeur-Bodou" (tourist park welcoming around 60,000 visitors per year), where a device according to Example 1 was concealed and positioned at the entrance of the park. The figures obtained by the devices according to example 1 were compared with reference devices and with the numbers of paying park entrances.

Thus, on August 15, 2018, for 1,192 paying entries, the device according to example 1 recorded 1,248 round trips. The following day, for 921 paying entries, the sensor recorded 990 round trips. These figures are consistent with the fact that the sensor counts all the passages and aims for an accuracy of +/- 10%.

Claims (1)

Claims [Claim 1] Attendance capture device comprising an autonomous energy source and / or a charging interface and / or an external power supply means, said device being characterized in that: (a) it has a total mass of less than 2 kg, preferably less than or equal to 500 g, and (b) it comprises, in the same housing: - at least one passage sensor, a means of storage and / or transfer of data preferably in real time, and - A management and processing unit, adapted to count the number of passage (s) in front of said sensor, to manage the operation of said sensor, and to manage said storage and / or said data transfer. [Claim 2] Device according to claim 1, characterized in that: - the device is autonomous, - attendance is related to living things, such as humans, or moving objects, such as cars, - the housing is waterproof, - the box is immobilized and locked at a fixed point, and / or - the internal energy source is a battery or a battery whose power is less than 100 W / h, 80 W / h, 50 W / h, 40W / h, 30 W / h, 20 W / h, 10 W / h , 5 W / h, or even less than 2W / h. [Claim 3] Device according to any one of the preceding claims, characterized in that: - said at least one passage sensor, - said means for storing and / or transferring data, and - said management and processing unit, are each adapted to be in continuous operation or in alternation with low electrical consumption. [Claim 4] Device according to claim 3, characterized in that said at least one passage sensor is a digital sensor such as a digital optical sensor or a digital bus thermal sensor, preferably associated with a Fresnel lens, and said at least one sensor can optionally be associated with at least one second precision sensor adapted to operate on the signal of the first passage sensor. [Claim 5] Device according to any one of the preceding claims, characterized in that the data transfer means comprises or consists of an electronic data transfer card possibly integrated in the management and processing unit, allowing for example to use a wireless network such as a Bluetooth, Wifi network, a mobile telephone network and / or an IOT network such as Sigfox or LoRa. [Claim 6] Device according to any one of the preceding claims, characterized in that the management and processing unit comprises at least one of the following elements: - said means for storing and / or transferring data, - a central unit with a management of a time base adapted to the scanning of said at least one passage sensor, - a counting unit possibly adapted for time stamping of the data, and / or - a real time RTC clock. [Claim 7] Device according to any one of the preceding claims, characterized in that said device further comprises a switch for starting and / or stopping operation, preferably with magnetic operation, comprising for example at least one detector Hall effect adapted to detect the presence or absence of artificial magnetic fields external to said device. [Claim 8] Magnetically operated switch, preferably adapted to the device according to any one of the preceding claims, characterized in that it comprises: - at least one magnetizing conductive element preferably in contact with the external environment, such as a case fixing screw possibly extended by a screwing insert, - at least one magnetic detector, for example Hall effect, arranged so as to be close to said magnetism conducting element, optionally a second magnetic detector, for example Hall effect, arranged so as to be distant from said magnetism conducting element, and - Optionally a magnetic element, for example a magnet adapted to come and stick by magnetism to said at least one magnetizing conductive element such as the case fixing screw. [Claim 9] Use of the device according to any one of claims 1 to 7 for counting living beings and / or moving objects, said device being preferably used for rental. [Claim 10] Method for counting living beings and / or objects in transit in a passage space, characterized in that the method comprises at least one device according to any one of claims 1 to 7, said passage space being preferably segmented into passage plots to place several of said devices in the different plots thus delimited so as to increase the counting accuracy.