Security device

Abstract

The present disclosure relates to a security device (10) comprising a portable device (11) and a fixture (12), which may be associated with an environment (S) to be monitored having a perimeter (P), or which is configured to define the environment (S) or the perimeter (P). The stationary device (12) and the portable device (11) are configured to interact with each other after approaching each other within an interaction distance. The security apparatus (10) is configured to process a signal relating to an interaction between the two devices (11, 12) to detect entry of the portable device (11) into the environment (S) or to detect crossing of the portable device (11) over the perimeter (P).

Description

Technical Field

[0001] The present invention relates to a safety and control device for use in a closed or perimetered environment. Background Art

[0002] It is well known that various manufacturing and service industries use closed environments, for example, when storing products, especially in cold rooms where the products are kept at a certain temperature and / or controlled atmosphere, which may be critical if the operators are exposed to such environment for a long time.

[0003] One or more users may have more or less access to the interior of these closed environments, for example to move products or to perform maintenance on the products or the environment itself.

[0004] In fact, there are often temperatures and / or environmental conditions that may be dangerous to a user exposed to them, for example if the user is exposed to very low temperatures for a long period of time. In fact, physical factors such as low temperatures may have known harmful effects on the human body, depending on, for example, the temperature and / or the time spent at said temperature.

[0005] Therefore, ensuring the safety and health of people using low temperature environments such as cold rooms is of vital importance, especially when there are extremely low temperature conditions, such as freezing or deep freezing conditions, such as below -18°C, or air scenarios that may pose a danger to users. Summary of the invention

[0006] The technical problem to be solved by the present invention is to ensure the safety and health of users who need to operate in a closed environment or an environment with a perimeter.

[0007] Therefore, the task of the safety device according to the invention is to provide an instrument capable of protecting the user from the known risks of exposure and prolonged exposure to adverse environmental conditions, in particular low temperatures.

[0008] The object of the present invention is to provide a safety device that enables a user to operate in a closed or perimetered environment under safe conditions and also enables a user to avoid health hazards when performing duties or operating in a closed or perimetered environment.

[0009] Another object of the invention is to propose a safety device capable of automatically identifying dangerous situations for a user, for example after a fall or loss of consciousness in a closed environment or a perimeter environment with harsh environmental conditions.

[0010] Another object of the present invention is to provide a safety device that can assist a user while he or she is within such an environment or perimeter so that the user can regulate possible activities and the time spent in the activities before leaving, even temporarily.

[0011] This task as well as these and other aims, which will become more apparent hereinafter, can be achieved by a safety device according to the attached claim 1 .

[0012] Detailed features of the safety device according to the invention are contained in the dependent claims.

[0013] In particular, the present invention contemplates a security device comprising a portable device and a fixed device, the fixed device being associated or associable with an environment or perimeter to be monitored. In particular, the portable device and the fixed device are configured to interact once they are within a certain interaction distance of each other, and the security device is configured to process signals related to such interaction in order to detect the entry of the portable device into the environment or perimeter.

[0014] Other features and modes of use constituting the subject matter of the present disclosure will become more apparent in the following detailed description of preferred embodiments by way of non-limiting examples. It is obvious, however, that each embodiment may have one or more of the above advantages; in any case, it is not necessary for each embodiment to have all of the above advantages at the same time.

[0015] It is also understood that the scope of the present disclosure includes all possible combinations of the above-described embodiments, as well as all possible combinations of the embodiments described with reference to the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Reference will be made to the figures of the accompanying drawings in which:

[0017] - Figure 1 A simplified diagram of an operating sequence is shown according to which the safety device according to the invention can be configured. DETAILED DESCRIPTION

[0018] With reference to the accompanying drawings, the security device, generally indicated by 10, comprises a portable device 11 and a fixed device 12. The fixed device 12 is associated with or can be associated with an environment S to be monitored, i.e. the environment S to be monitored is monitored by the above-mentioned security device 10, and the environment S has a perimeter P, i.e. is bounded or surrounded by the perimeter P. Optionally, the fixed device 12 is configured to define the environment S or the perimeter P. In other words, the fixed device 12 is connected to or can be connected to the environment S, and the environment S is preferably closed or defined by the perimeter P, or is bounded or surrounded by the perimeter P. Optionally, the fixed device 12 is configured to define the environment S or the perimeter P, and the environment S monitored by the security device 10 is within the perimeter P.

[0019] For example, in a completely general manner, the environment S may be defined by the space surrounding an antenna designed to emit electromagnetic radiation so as to define a perimeter P at a distance from this antenna at which said signal is subject to a predetermined attenuation, for example of intensity.

[0020] Obviously, in general, the environment S may be defined by a plurality of antennas or a network of such antennas, and the perimeter P may be defined accordingly according to the cumulative effect of the antenna signals.

[0021] The portable device 11 and the fixed device 12 are configured to interact with each other after approaching each other within the interaction distance. For example, the interaction distance can be selected according to the form and size of the environment S or the extension and form of the perimeter P, so that if the user associated with the portable device 11 is located in the environment S, that is, within the perimeter P, this situation can always be detected with appropriate accuracy and a small error range.

[0022] For example, the fixed device 12 may include a plurality of transmitting and / or receiving devices, such as RFID tags, which are designed to interact with the portable device 11 and are distributed along the perimeter P so as to detect the entry or exit of the portable device 11 into the environment S and / or the perimeter P with high reliability.

[0023] In other words, generally, the portable device 11 and the fixed device 12 may be configured such that they can interact with each other when they are within an interaction distance close to each other, for example, they may communicate and / or interact with each other.

[0024] The security device 10 is configured to process signals related to the above interactions in order to detect whether the portable device 11 enters the environment S or detect whether the portable device 11 crosses a perimeter.

[0025] In other words, the security device 10 is capable of processing signals related to the interaction between the portable device 11 and the fixed device 12 in order to determine or signal the entry of the portable device 11 into the environment S or the crossing of the perimeter P.

[0026] Typically, for example, the fixed device 12 may include a conductor element configured to electromagnetically interact with the portable device 11. The conductor element may be distributed along a closed track defining a perimeter P, such that when an operator carrying the portable device 11 crosses the perimeter P, the portable device 11 interacts with the fixed device 12, thereby detecting that the operator has entered the environment S defined by the perimeter P.

[0027] Obviously, the environment S may be defined by walls which primarily define the perimeter P and restrict access to said environment S via apertures or openings in the walls.

[0028] In this case, the fixed device 12 and the portable device 11 can, for example, be composed of or include a device that actively or passively responds to radio frequencies, also known in the professional term RFID tags, and an associated antenna or antenna network, which is designed to interact with it when passing through one of the openings or openings.

[0029] The safety device 10 according to the invention can be used advantageously particularly, although not exclusively, in the field relating to the safety of cold storage rooms.

[0030] In fact, a cold room is a harsh and dangerous environment for operators who must enter and carry out activities inside the cold room.

[0031] First, the temperatures within cold storage rooms are generally incompatible with human survival, and therefore, operators must be exposed to these temperatures as little as possible.

[0032] In addition, due to the low ambient temperature in the cold room, especially after the operator enters the cold room, condensation and / or frost are easily formed on the inner surface of the cold room, which is mainly due to the different relative humidity of the air entering the cold room after the operator enters the cold room.

[0033] Therefore, the floor of the room may be slippery and the operator may fall.

[0034] If the operator loses consciousness in the room, the harsh environment defined therein may cause serious damage to the operator's body or even cause death; therefore, it is urgent to provide a safety device 10 that can greatly improve safety when used in a cold storage room. Therefore, according to the present teachings, the safety device 10 can include a cold storage room, or can be installed in a cold storage room, or is associated with a cold storage room, and the cold storage room includes a chamber with at least one entry point.

[0035] Via this entry point, the user can enter the environment S by crossing the boundary P.

[0036] That is, the chamber may bound or define the environment S and may include walls that bound or define the perimeter P.

[0037] In particular, the fixture 12 may comprise a controller. Preferably, the controller is capable of regulating the temperature of the environment S. More preferably, the controller is designed to keep the temperature of the environment S within a predetermined value or region, for example, for cooling products in said chamber.

[0038] In case the environment S consists of or includes a refrigerated compartment, the controller may be designed to adjust the temperature of the environment S by activating the refrigerated compartment.

[0039] In addition, the portable device 11 can be a device designed to be attached to the operator or carried by the operator in order to detect whether the operator has entered the cold storage room and / or is in the cold storage room. In other words, the portable device 11 can be associated with the operator of the cold storage room in a fixed or removable manner, so that the interaction between the portable device 11 and the fixed device 12 can be used to detect when the operator enters and / or is in the cold storage room.

[0040] For example, the portable device 11 can be configured to form a pendant, or can be fixed on the wrist or heel in the form of a bracelet, for example, according to the operator's higher requirements for comfort.

[0041] Preferably, the signal processed by the security device 10 comprises or consists of electromagnetic radiation. For example, the electromagnetic radiation may comprise an electromagnetic field with a frequency in the infrared range or in the visible radiation range, which may be used in a continuous or pulsed manner, for example using a sensor known in the art as a time-of-flight sensor.

[0042] Furthermore, if the portable device is passively responsive and / or actively responsive, the electromagnetic radiation may be within the ultra-wideband radiation range.

[0043] Furthermore, the portable device 11 and the fixed device 12 may be configured to emit and receive processable electromagnetic radiation to define the position of the portable device 11 relative to the environment S and / or the perimeter P.

[0044] The portable device 11 and the fixed device 12 may also include devices designed to emit and / or receive electromagnetic radiation.

[0045] The portable device 11 and the fixed device 12 may further include an electronic processor connected to the transmitting device and configured to interact between the portable device 11 and the fixed device 12 via the transmitting device to identify the relative position of the portable device 11 relative to the environment S and / or the perimeter P. For example, the electronic processor may be configured to interact with the portable device 11 and the fixed device 12 to detect whether the portable device 11 is located inside the environment S and / or the perimeter P.

[0046] For example, the portable device 11 can be selected from a smartphone, a smart watch, a smart tag or a portable tag. In particular, the portable tag is preferably a device configured to be able to interact directly with the fixed device 11, for example without programming or activation by an operator of the cold storage room. A smartphone or a smart watch can be used as a portable device, i.e., once they are provided with a specific application for determining and / or allowing interaction between the portable device 11 and the fixed device 12, they can interact with the fixed device 12 in this way.

[0047] For example, the transmission device may comprise an electromagnetic radiation sensor, such as a sensor designed to detect the infrared radiation range or the visible radiation range.

[0048] These sensors may be configured to use and / or detect continuous or pulsed radiation, and may include, for example, sensors known in the art as "time of flight" sensors.

[0049] Furthermore, if the portable device is passively responsive and / or actively responsive, it may also include an ultra-wideband electromagnetic radiation sensor.

[0050] The cold storage room may, in a conventional manner not further described, comprise a refrigeration device having a cold exchanger in fluid communication with the environment S in order to absorb heat from the environment S.

[0051] The electronic processor may be configured and / or programmed to operate the controller to switch the refrigeration unit from the normal operating mode 100 to the entry operating mode 200 upon detection of an entry condition 300 .

[0052] exist Figure 1 In the flow chart, the detection is represented by way of non-limiting example as a verification operation 400, which is configured to check whether the entry situation 300 occurs in a forward direction or in a reverse direction. The forward direction is exemplified in the flow chart by a branch extending to the entry operation mode 200, and the reverse direction is represented in the flow chart by a branch extending to the left.

[0053] In particular, if the portable device 11 and / or the fixed device 12 detects the presence of the portable device 11 in the environment S and / or the entry of the portable device 11 into the perimeter P after the interaction, an entry situation 300 may occur.

[0054] In other words, if at least one of the portable device 11 and the fixed device 12 detects the presence of the portable device 11 in the environment S and / or the entry of the portable device 11 into the perimeter P after interaction, an entry situation 300 may occur.

[0055] The electronic processor of the security device 10 may also be configured and / or programmed to implement at least one of the operations A, B, C, D, E, F described below by way of non-limiting example, upon transitioning into the operational mode 200 .

[0056] In a refrigeration shut-off operation A, the electronic processor may operate the refrigeration device in such a way as to prevent or reduce heat exchange between the cold exchanger and the environment S.

[0057] The operating state of the refrigeration device, whether in operation or in non-operation, can be signaled by a first indicator light 13, which can be mounted in the portable device 11 and / or in the fixed device 12, preferably in the latter.

[0058] In other words, after detecting that the operator enters the environment S, ie, the chamber of the refrigerating chamber, the safety device 10 may temporarily interrupt the refrigerating action to prevent the thermal environment conditions of the operator in the chamber of the refrigerating chamber from deteriorating.

[0059] In case the environment S defined, for example, by a cavity of a cold room is provided with a lighting device, the electronic processor may be configured or programmed to perform an operation B involving switching on the lighting device, which may be configured to illuminate the interior of the environment S or in particular the cavity of the cold room.

[0060] The operating state of the lighting device can be signaled by a second indicator light 14, which can be installed in the portable device 11 and / or the fixed device 12, preferably in the latter. The safety device 10 can include an alarm device, which is configured to, once activated, for example Figure 1 As indicated by reference numeral 500, a countdown may be performed according to a predetermined time and an alarm may be activated after the countdown is completed, and the electronic processor may be configured or programmed to perform a timing operation C involving activating the alarm device.

[0061] The operational state of the alarm device may be signaled by a third indicator light 15, which may indicate activation of the countdown, and / or a fourth indicator light 16, which may indicate an activated state and / or a deactivated state of the alarm.

[0062] The third indicator light 15 and / or the fourth indicator light 16 may be installed in the portable device 11 and / or the fixed device 12, preferably in the latter.

[0063] In particular, the alarm device may be deactivated manually, for example via the portable device 11, e.g. Figure 1 600, thereby deactivating the alarm and allowing the operator to remain in the environment S, such as a chamber of a cold room, for a longer period of time without activating the alarm.

[0064] In operation C, an alarm may be activated and, in particular, may be adjusted as required, or a predetermined time may be set automatically depending on an ambient temperature set for an environment S, such as a chamber of a cold room, or an ambient temperature detected in the same environment S, such as the chamber itself. In particular, a countdown may be performed by the alarm device after activation of the alarm device, or may be performed only if the function of the cold room is to keep the temperature of the environment S below a predetermined temperature, such as below -25°C.

[0065] The environment S, in particular when it consists of (or includes) a cold storage room, can be equipped with at least one sensor capable of detecting the presence or entry of a person in or into the environment S, for example, a movement sensor or a heartbeat detection sensor can be conventionally equipped; in this case, the electronic processor can be configured or programmed to perform an operation D involving activating at least one sensor, which is configured and positioned to detect the presence and / or movement of an operator in the chamber of the cold storage room.

[0066] A fifth indicator light 17 may be provided to signal an activated state or a deactivated state of the motion sensor and may be installed in the portable device 11 and / or the fixed device 12 , and preferably in the latter 12 .

[0067] Furthermore, in operation D, it is conceivable that after the motion sensor is activated, i.e. after the motion sensor detects the movement of the operator in the chamber, if the motion sensor does not detect movement within a safety time period, i.e. after the safety time period ends, an alarm is activated.

[0068] The safety time may be preset, or may be adjustable, or may be automatically set based on a set or detected ambient temperature within the chamber.

[0069] The stationary device 12 and / or the portable device 11 may have an input interface connected to the electronic processor and configured to be operated by an operator to control the operation of the refrigeration equipment.

[0070] The input interface may be connected to the electronic processor physically, ie by an electrical or electronic connection, or in a "wireless" manner, ie for example by means of receiving and transmitting electromagnetic signals.

[0071] In this case, the electronic processor may be configured or programmed to perform an input deactivation operation E involving deactivating the input interface, ie the operator may render the input interface inoperable so that activation of the refrigeration device cannot be performed, ie the possibility of activating the refrigeration device is blocked.

[0072] For example, in the event of an entry situation 300 , operation E may be performed to prevent activation of the refrigeration equipment until a portable device 11 , preferably associated with an operator, is located within the environment S or has entered the perimeter P.

[0073] In other words, the safety device 10 may be configured in such a way that if the operator enters the interior of the refrigerated compartment, the refrigeration device cannot be activated, thereby ensuring the safety of the operator.

[0074] The input interface may be, for example, a display screen or a control panel of the refrigeration appliance and may be installed in the fixing device 12 , for example.

[0075] The fixture 12 may include at least one graphical interface or visual indicator.

[0076] In this case, the electronic processor may be configured or programmed to perform an operation F that warns of the presence of an operator in the environment S or within the perimeter P.

[0077] In particular, operation F may involve activating a visual indicator or operating a graphical interface to indicate the presence of an operator within said environment S and / or perimeter P.

[0078] In particular, the security device 10 may include an input interface and one or both of a graphical interface or a visual indicator, which may preferably be mounted in the fixture 12 .

[0079] In addition, the refrigeration device may include a ventilation device that is in fluid communication with the chamber and the cold exchanger and can be operated to promote heat exchange between the cold exchanger and the environment S by forced convection. In the case where the electronic processor is configured to perform operation A, operation A may include deactivating the ventilation device while interrupting or reducing the heat exchange between the cold exchanger and the environment S or alone.

[0080] The activated or deactivated state of the ventilation device can be signaled by means of the first indicator light 13 .

[0081] The controller of the fixed device 12 may also be configured to activate the cold room in the normal operating mode 100 to adjust the temperature of the environment S to a set point value, which may be set and adjusted by an operator via the fixed device 12 and / or the portable device 11 .

[0082] The safety device 10 may also optionally include at least one of the following safety sensors:

[0083] - a temperature sensor designed to detect the ambient temperature of an operator entering the S environment, preferably a chamber of a cold room; in this case, a sixth indicator light 18 may be provided in order to signal whether the above-mentioned temperature sensor is activated or deactivated, this sixth indicator light 18 may be installed in the portable device 11 and / or in the fixed device 12, and preferably in the latter;

[0084] - a biometric sensor, designed to detect biometric data of a user, which can be installed, for example, in a portable device 11, which can be configured to be wearable, so that the biometric sensor detects biometric data of an operator wearing the portable device 11, such as a thermal beat rate; in this case, a seventh indicator light 19 can be provided to emit a signal if the data detected by the biometric sensor is within a predetermined safety limit; the seventh indicator light 19 can be installed in the portable device 11 and / or the fixed device 12, and preferably in both devices;

[0085] - a light sensor designed to detect the light intensity in the environment A in order to detect a possible lack of light that could affect visibility in the environment S, preferably a chamber of a cold storage room; in this case, an eighth indicator light 20 may be provided to signal whether the data detected by the light sensor complies with predetermined safety limits; the eighth indicator light 20 may be installed in the portable device 11 and / or the fixed device 12;

[0086] - A gas sensor designed to detect whether one or more specific gases exist in the environment A, or to detect whether the amount thereof exceeds a predetermined threshold value; for example, the sensor can be used to detect whether the carbon dioxide content in the environment S exceeds a safe threshold value; in this case, a ninth indicator light can be provided to send a signal indicating whether the gas sensor detects a dangerous condition of the environment S; the ninth indicator light can be installed in the portable device 11 and / or the fixed device 12;

[0087] - an acoustic sensor designed to detect the operator's activities in the environment S by detecting the sounds generated by the operator's activities in the environment S, with the aim of inferring whether the operator has fainted and lost consciousness if the acoustic sensor does not detect any noise in the environment S, preferably the chamber of the cold storage room, within a predetermined safety period of time; it can therefore be envisaged that each time the acoustic sensor detects a sound exceeding a predetermined threshold, the electronic processor resets the safety timer to zero; and when the timer reaches a predetermined time limit, the electronic processor activates an alarm; in this case, a tenth indicator light 21 can be designed to signal whether the acoustic sensor is in an activated state, whether it is activated and / or whether no noise exceeding a preset threshold is detected within a time period equal to or exceeding the preset limit of the environment S; the tenth indicator light 21 can be installed in the portable device 11 and / or the fixed device 12;

[0088] - radiation sensors and / or humidity sensors and / or electrical sensors and / or high-voltage sensors, respectively designed to detect radiation harmful to the operator, humidity (in the form of steam and / or condensed water) in the environment S, such that the movement and presence of the operator in the environment S, preferably the chamber of the cold room, is dangerous, such as a risk of falling, currents caused or caused by stray currents, or high-voltage conditions that may endanger the operator; in this case, corresponding indicator lights may be provided, which are Figure 1 Indicated by reference numerals 21 to 24, they are respectively designed to send out signals whether the radiation sensor detects that harmful radiation in the environment S exceeds a predetermined threshold, or whether the humidity sensor detects a dangerous situation, such as a slipping situation, or whether the electrical sensor detects stray current, or whether the high-voltage sensor detects that the operator is in danger of electric shock.

[0089] The electronic processor, preferably mainly installed in the fixture 12, can be designed or programmed to perform a cyclic verification operation 600 designed to cyclically check whether the portable device 11 is detected to leave the environment S or further cross the perimeter P after the entry situation 300 occurs, thereby leaving the perimeter.

[0090] The electronic processor may be configured or programmed to:

[0091] - If the result of the cycle verification operation 600 is positive, the electronic processor operates the controller to switch the refrigeration device to the normal operating mode 100;

[0092] If the result of the cyclic verification operation 600 is negative, the electronic processor activates a monitoring operation 700 consisting in checking whether the above-mentioned at least one safety sensor detects a dangerous situation for an operator inside the environment S, such as a chamber of a cold room.

[0093] The electronic processor may be configured or programmed to:

[0094] - If the result of the monitoring operation 700 is negative, reference numeral 701 , the operation is repeated;

[0095] If the result of the monitoring operation 700 is positive, reference numeral 702 , an alarm procedure 800 is triggered and may lead to the activation of a safety device, for example at least one of the following actions:

[0096] - Activate siren 901;

[0097] - activating a visual alarm signal 902, which may include lighting one of said indicator lights 15 to 24 in order to signal to any rescuers that an alarm situation has begun to occur; for example, Figure 1An example is shown in which the fifth indicator light 17 is on, which indicates that no movement is detected in the room, so it can be inferred that the operator may have fallen or lost consciousness in the room.

[0098] In order to prevent false alarm situations and to ensure the safety of operators entering the environment S, such as the chamber of a cold room, the alarm device can be manually deactivated by the portable device 11, as described above, e.g. Figure 1 The method generally indicated at 600 in the figure disables the alarm and allows the operator to remain in the refrigerated compartment for a long time without activating the alarm.

[0099] It can thus be understood how the solution according to the invention makes it possible to achieve the intended aims and tasks, in particular to ensure a significantly increased level of safety for operators within the refrigerated compartment.

[0100] So far, the subject matter of the present disclosure has been described with reference to its embodiments. It should be understood that other embodiments related to the same inventive concept may also exist, all of which belong to the scope of protection of the appended claims. In addition, all details can be replaced by other technically equivalent elements.

[0101] Where operating features and techniques mentioned in the appended claims are followed by reference numerals or symbols, the sole purpose of these reference numerals or symbols is to facilitate the understanding of the claims and they do not in any way limit the interpretation of each element which is identified purely by way of example by such reference numerals or symbols.

Claims

1. A safety device (10), comprising: - Portable devices (11) - fixing device (12), wherein the fixture (12) is associated with or can be associated with an environment (S) to be monitored having a perimeter (P), or the fixture (12) is configured to define the environment (S) or the perimeter (P); The fixed device (12) and the portable device (11) are configured to interact with each other after approaching each other within an interaction distance; The security device (10) is configured to process signals related to the interaction to detect the portable device (11) entering the environment (S), or to detect the portable device (11) crossing the perimeter (P).

2. The security device (10) according to claim 1, comprising a cold storage room, said cold storage room comprising a chamber having at least one entry point, said chamber delimiting said environment (S) and comprising walls defining said perimeter (P); in, The fixture (12) includes a controller capable of operating the refrigeration chamber to adjust the temperature of the environment (S); The portable device (11) is a device designed to be attached to an operator or to be carried by the operator to detect the operator's entry and / or presence in the cold storage compartment.

3. The safety device (10) according to one of the preceding claims, wherein: The signal comprises or consists of electromagnetic radiation; The portable device (11) and the fixed device (12) are configured to emit and receive electromagnetic radiation, which can be processed to define the position of the portable device (11) relative to the environment (S) and / or relative to the perimeter (P).

4. The safety device (10) according to the preceding claim, wherein: The portable device (11) and the fixed device (12) comprise means suitable for emitting and / or receiving the electromagnetic radiation; The portable device (11) and / or the fixed device (12) comprises an electronic processor connected to a transmitting device and configured to cause the portable device (11) and the fixed device (12) to interact via the transmitting device to identify the mutual position of the portable device (11) relative to the environment (S) and / or relative to the perimeter (P); The portable device (11) can be selected from a smart phone, a smart watch or a portable tag.

5. The safety device (10) according to claims 1, 2 and 4, wherein: The cold storage room comprises a refrigeration device having a cold exchanger in fluid communication with the environment (S) so as to absorb heat from the environment (S); The electronic processor is configured and / or programmed to control the controller to switch the refrigeration device from a normal operation mode (100) to an entry operation mode (200) upon detecting an entry condition (300); The entry situation (300) occurs if, after the interaction, the portable device (11) and / or the fixed device (12) detects the following: - the portable device (11) is present in the environment (S) - The portable device (11) enters the perimeter (P).

6. The safety device (10) according to claim 5, wherein: The processor is configured and / or programmed to perform at least one of the following operations after switching to the entry operation mode (200): - a refrigeration shut-down operation A, wherein the processor operates the refrigeration device so as to prevent or reduce heat exchange between the cold exchanger and the environment (S); - operation B, in which case the cold storage compartment is equipped with lighting means and the operation B involves turning on the lighting means; the lighting means is configured to illuminate the interior of the cold storage compartment; - a timed operation C, in which case the safety device (10) comprises an alarm device, the alarm device being configured such that, after activation, a countdown is performed relative to a predetermined time and an alarm is activated after completion of the countdown, the alarm device being capable of being manually deactivated, for example by means of the portable device (11) in order to deactivate the alarm and allow an operator to remain in the cold storage chamber for a longer period of time without activating the alarm, the operation C involving the activation of the alarm device; the predetermined time being capable of being adjusted as required or being automatically set according to the ambient temperature set for the chamber or detected in the chamber; - a monitoring operation D, in which case the cold storage chamber is equipped with at least one motion sensor and the monitoring operation involves activating the at least one motion sensor configured and positioned to detect the movement of the operator inside the chamber; the operation D involves activating an alarm if, after activation of the motion sensor, the motion sensor does not detect movement within a safety time period, the safety time period being predefined and being adjustable or being automatically set according to an ambient temperature set for the chamber or detected in the chamber; - an input deactivation operation E, in which case the portable device (11) and / or the fixed device (12) has an input interface, the input interface is connected to the processor and is configured to be operated by an operator to control the refrigeration device; in the operation E, the input interface is deactivated, i.e., cannot be operated by an operator to activate the refrigeration device; - Operation F, alerting the presence of an operator in the environment (S) or within the perimeter (P); in this case, the fixed device (12) comprises at least a graphical interface or a visual indicator, and the operation F involves activating the visual indicator or operating the graphical interface to indicate the presence of the operator in the environment (S) and / or the perimeter (P).

7. A safety device (10) according to claim 5 or 6, wherein: The refrigeration device comprises ventilation means in fluid communication with the chamber and with the refrigerated compartment and operable to promote heat exchange between the cold exchanger and the environment (S) by forced convection; In case the processor is configured according to claim 6 to perform the operation A, the operation A involves deactivating the ventilation device.

8. The safety device according to one of claims 5 to 7, wherein: The controller of the fixed device (12) is configured such that, in the normal operating mode (100), the controller activates the cold room to adjust the temperature of the environment (S) to a set point value, which can be set and adjusted by an operator via the fixed device (12) and / or the portable device (11).

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