PROTECTIVE CAPSULES FOR EARTHMOVING MACHINES THAT HAVE A SLOTTED ANTENNA

Abstract

A capsule for protecting an electronic device for an earthmoving machine, the capsule comprising walls enclosing an inner chamber configured to house an electronic device or components thereof, the capsule comprising a slot antenna disposed in at least one of the walls, the at least one of the walls in which the slot antenna is disposed being a cover that can be removably attached to one or more of the walls of the capsule. Further, a device for an earthmoving machine comprising a capsule, a method for manufacturing a capsule, and a method for manufacturing a device for an earthmoving machine.

Description

PROTECTIVE CAPSULES FOR EARTHMOVING MACHINES THAT HAVE A SLOTTED ANTENNA TECHNICAL FIELD This disclosure relates to the field of earthmoving machinery. More specifically, this disclosure relates to capsules and devices for earthmoving machinery that, for example, may be inserted into wear parts of such machinery or into excavation implements, to name a few devices of such machinery, and where the capsules and devices are capable of transmitting and / or receiving data with an antenna. STATE OF THE ART Earthmoving machines, such as excavators or loaders, include digging attachments, such as buckets, shovels, dredge heads, etc., in which material is pushed, pulled, and / or scooped. Digging attachments, such as buckets, are subjected to high stress and significant wear, primarily in the area known as the blade. For this reason, blades typically have multiple protective elements installed to shield them and the digging attachments from wear. These protective elements also increase the penetration of the digging attachments into the ground and reduce soil scraping. All these components are subjected to intense mechanical stress, tension, and significant wear. For this reason, they generally need to be replaced fairly frequently, as wear requires. Collectively, these protective elements are often referred to as wear elements or ground engaging tools, or GETs. To monitor wear or any condition of wear parts, the condition of other parts of the earthmoving machine, such as traction equipment, booms, or arms, or other factors that may influence ground contact operations or the machine itself, the various parts of the earthmoving machine may include sensing devices that measure these factors, for example, the stress to which they are subjected or any other parameter. However, the measurements and the resulting information from processing them (if any) remain within the location of the sensing devices, for example, wear parts, traction equipment, a boom, an arm, a hydraulic cylinder, excavation attachments, etc., since that is the QfrRfrnn / eznz / e / YiAi is the location where the electronic detection devices are found. To extract the data, wireless communication links are generally needed to send the data to a remote device, for example, an earthmoving machine cab, a control center, the cloud on the Internet, etc. Therefore, in addition to electronic devices for measurements, and as seen, for example, in patent documents WO-2017017289-A1, WO-2012107848-A1, US-20150284935-A1, and WO-2012116408-A1, when machine devices such as wear parts include sensing devices, they generally also include means for radiating and capturing electromagnetic waves, such as RFID tags, near-field communication antennas, or antennas in the form of, for example, monopoles. In this way, data from the sensing devices can be communicated wirelessly. Regarding the first two, the range of the electromagnetic waves is usually limited.Regarding the latter, the mechanical reliability of these antennas may not be high enough to withstand the stresses to which the wear parts are subjected; likewise, the volume required by these antennas may prevent their integration into certain devices such as wear parts, especially when the operating frequency has to be lower. Consequently, there is interest in providing protective enclosures for earthmoving machinery that incorporate an antenna capable of both better withstanding the stresses of devices within earthmoving machinery and improved radio performance. The protective enclosures are preferably attachable or removable from the earthmoving machinery. Furthermore, there is also interest in providing compact antennas that, in some embodiments, can operate at frequencies below 1000 MHz. There is also interest in providing earthmoving machinery, and especially its components, with antennas that can withstand stress without requiring protective enclosures. In this regard, it would be preferable to have devices that offer antenna capabilities while also protecting components within cavities of earthmoving machinery and maintaining a compact size. BRIEF DESCRIPTION OF THE INVENTION QfrRfrnn / eznz / e / YiAi A first aspect of the disclosure relates to a capsule for protecting an electronic device for an earthmoving machine, the capsule comprising: walls enclosing an interior chamber configured to house an electronic device or at least one or more components thereof, and a slot antenna disposed in at least one of the walls. The capsule allows for the protection of an electronic device or one or more of its components, as well as the wireless transmission of data from the electronic device to a remote electronic device and / or the wireless reception of data from a remote electronic device and its transmission to the electronic device. For example, the electronic device and / or one or more of its components could be, but are not limited to, one or more sensing devices, one or more batteries, one or more memory units, etc. For example, the electronic device could be a controller for monitoring and / or operating the earthmoving machine, and could be located, for example, in a control center or on the earthmoving machine itself, such as in its cab. The capsule does not require the provision of an antenna such as a monopole, dipole, patch antenna, microchip antenna, etc., that would occupy space inside the inner chamber or have to be attached to the capsule or another part of the earthmoving machine away from the capsule. However, it is possible to provide one or more antennas in addition to the slot antenna for wireless transmission and / or reception at frequencies other than the operating frequencies of the slot antenna, or for redundancy purposes. The capsule advantageously utilizes one or more of its walls for the radiation and / or capture of electromagnetic waves in order to wirelessly transmit and / or receive data. This, in turn, can reduce the overall volume required for both protection and wireless transmission / reception, increase communication reliability due to an antenna less prone to damage, and / or simplify and improve the integration of the antenna into the earthmoving machine, especially when the capsule is to be inserted into or attached to a wear element, such as a tooth, adapter, cast lip, or excavation implements like a bucket.To this end, the capsule is preferably adapted for insertion into a cavity of or attachment to a wear element, such as excavation implements, a boom, an arm, a hydraulic cylinder, for example, a bucket cylinder, traction means, for example, crawler tractors, or a lower part of an earthmoving machine cab. In some embodiments, the capsule also comprises dielectric material that fills Qfrpfrnn / eznz / B / YiAi the slot of the slot antenna. The dielectric material can be part of the wall or walls of the slot antenna, part of one or more components adapted to removably fill the slot antenna slot (e.g., a removable plug or cap), or part of a filler material that fills both the slot and the inner chamber containing the electronic device, for example, through an encapsulation process. In the latter case, since the material also fills the inner chamber, it also protects the electronic device within it. The dielectric material preferably fills the slot as much as possible to hermetically seal the inner chamber, thereby reducing or completely preventing the ingress of dirt particles, for example, or other particles capable of short-circuiting or affecting the radio performance of the slot antenna.The dielectric material can be, for example, epoxy, silicone, plastic, etc. In some embodiments, the slot antenna is adapted to operate at a frequency below 3000 MHz. In other embodiments, the frequency is between 2400 MHz and 2500 MHz. The slot antenna is capable or additionally capable of radiating and / or capturing electromagnetic waves in, for example, the 2.4 GHz to 2.5 GHz ISM band. In some embodiments, the slot antenna is adapted or additionally adapted to operate at a frequency below 1000 MHz. In some implementations, the frequency is between 430 MHz and 440 MHz. In some implementations, the frequency is between 433.0 MHz and 435.0 MHz. In some implementations, the frequency is between 865.0 MHz and 870.0 MHz. In some implementations, the frequency is between 900 MHz and 930 MHz. The slot antenna is capable or additionally capable of radiating and / or capturing electromagnetic waves at frequencies below 1.0 GHz, while being compact in dimensions and mechanically more durable than antennas such as monopoles or patch antennas. The slot antenna can radiate and / or capture electromagnetic waves in the ISM band in the frequency range of 430 MHz to 440 MHz, which exhibits lower propagation losses than other bands at higher frequencies, and / or in one or more ISM bands within the frequency ranges of 865 MHz to 870 MHz, and 900 MHz to 930 MHz. In some implementations, at least one of the walls has a maximum length; Qfrpfrnn / eznz / B / YiAi, that is, the largest dimension of at least one of the walls where the slot antenna is arranged, in a particular longitudinal direction, a maximum width in a particular first transverse direction and a thickness in a second transverse direction, the maximum length being greater than or equal to the maximum width and the slot antenna having a maximum length, that is, the largest dimension of the slot antenna on at least one of the walls, in the longitudinal direction, which is at least 60% and less than or equal to 100% of the maximum length of at least one of the walls. The slot antenna can take up most or all of the length of at least one of the walls to establish a path for the currents to follow when electromagnetic waves are to be radiated or captured, thus allowing the operating frequency of the slot antenna to be reduced. In some embodiments, the slot antenna is not a straight slot. The slot antenna can consist of multiple segments, each segment being connected to one or more other segments along its length, such that the longitudinal directions of the respective segments form an angle with each other; that is, two directly adjacent segments are connected in such a way that they are not parallel. This allows for an increase in the effective length of the slot antenna, which in turn determines the operating frequency or frequencies. In some embodiments, one or more segments of the plurality of slot antenna segments are straight. In some embodiments, one or more segments of the plurality of slot antenna segments are curved. In some embodiments, at least one of the walls on which the antenna is arranged is a cover, and the cover may be removably attached to one or more of the capsule walls. The cover, designed to be removably attached to one or more walls, allows personnel to inspect, retrieve, and / or replace any device inside the chamber after detaching or separating the cover. The electronic device may, for example, have one or more memory units where data generated by circuits, sensing devices, and / or processors of the electronic device is stored for later processing. When the capsule is arranged on a wear item, the operation or operations mentioned above may take place when the wear item is to be replaced by another wear item due to wear and damage suffered by Qfrpfrnn / eznz / B / YiAi the wear item, either as part of maintenance tasks or in the event of failure of the wear item in question or another wear item attached to it. Personnel may also replace, for example, a battery in an electronic device when it has run out of power instead of replacing the entire electronic device, although wear items generally have a shorter lifespan than batteries. When the capsule is arranged in, for example, the excavation implements, boom, arm, hydraulic cylinder, the lower part of the cab or the traction means, the operation or operations mentioned above may take place from time to time when performing maintenance on the earthmoving machine or parts thereof, or as part of preventive maintenance tasks, for example. In some embodiments, the slot antenna is arranged in a capsule wall that is located at a rear end of the capsule. In preferred embodiments, the capsule is arranged in a wear element of the earthmoving machine such that the front end is oriented towards a front with respect to the machine and thus towards a ground with which to make contact by the earthmoving machine during machine operation. In some embodiments, the capsule comprises two walls, with the slot antenna arranged in the first wall and a second wall of the same shape as a container. In other embodiments, the capsule comprises three or more walls, and the second, third, and any other walls are mechanically coupled to form a container. The capsule has an inner chamber to protect the electronic device with only two walls, although more walls are possible, provided they are mechanically coupled. Reducing the number of walls can be advantageous from a mechanical standpoint because the mechanical coupling of the walls is often the weakest point of a capsule. During the operation of the earthmoving machine, the stresses or strains applied to the capsule can break it at this weakest point. The portion between the coupled walls may sometimes have a small gap after each pair of walls is coupled, through which soil, whether dry or wet, can enter the inner chamber and damage the protected electronic device. In some embodiments, the capsule also comprises the electronic device, the The electronic device Qfrpfrnn / eznz / B / YiAi comprises an electrical power source; the electronic device is at least configured for wireless data transmission and is electrically connected to the slot antenna; and the inner chamber partially or completely houses the electronic device. In some embodiments, the electronic device is further configured for wireless data reception. The electronic device or its components, while protected by the capsule, can transmit data it generates or processes to other devices located away from the capsule. The electronic device is configured to transmit and / or receive data at the frequency or frequencies at which the slot antenna operates. To this end, the electronic device includes a wireless communications module, such as a modem, to transmit data using a communications protocol or standard that operates at one or more frequency bandwidths; the capsule also protects the wireless communications module. The communications protocol or standard uses an operating bandwidth that has one or more frequencies that the slot antenna is adapted to radiate and receive electromagnetic waves. In addition, in some cases, the electronic device can also receive data from devices far from the capsule, such as commands to change the way the electronic device works, for example, entering a sleep state, waking up from a sleep state, changing the frequency with which the electronic device generates, processes and / or transmits data, changing the type of processing applied to the data, etc. The inner chamber partially houses the electronic device when only one or some components of the electronic device are inside the inner chamber, and fully houses the electronic device when the entire device is inside the inner chamber. In some embodiments, the electronic device also comprises at least one sensor configured to detect changes in a component of the earthmoving machine where the capsule is to be installed. In some embodiments, the at least one sensor is configured to detect one or more of the following: tension, wear, pressure, temperature, acceleration, position (e.g., GPS), material / terrain (for identification purposes), and the detachment of a wear item. The electronic device can process measurements from at least one sensor and transmit them via the slot antenna to an electronic unit to report on ground contact operations, and / or even the condition and / or operation of the affected machine part; for example, when the capsule is inside a wear element, the measurements can indicate how the wear element is penetrating and / or scraping the ground, and / or how worn the wear element is. Consequently, the measurements from at least one sensor can be used to estimate the degree of wear of the machine part or component containing the capsule, characteristics of the ground being contacted, the angle of attack at which the wear element is contacting the ground when it receives the capsule, and so on.Therefore, the measurements and / or any estimates made from them can be used for monitoring the machine part or component, predicting its maintenance, informing an operator of the earthmoving machine or a control center of ground contact operations, controlling the earthmoving machine (e.g., adjustments to the angle of attack, adjustments to the path of the excavating implements when contacting the ground, adjustments to the force applied by the earthmoving machine, etc.) by feeding the data to a controller that automatically adjusts the operation of the earthmoving machine, etc. In some embodiments, the at least one sensor comprises one or more of: a strain gauge, a pressure gauge, a relative displacement meter, an optical fiber strip, a piezoelectric strip, a pressure sensor, and an accelerometer. In some embodiments, the electronic device comprises a PCB. In some embodiments, the PCB is inside the inner chamber. In some other embodiments, the PCB is outside the inner chamber. The PCB can be inside the inner chamber for protection, but it can also be outside to reduce the package size or to protect other electronic components, such as the battery or batteries, sensors, etc. When the PCB is outside and includes a modem, the modem can be connected to the slot antenna, for example, via an SMA cable or similar. In some embodiments, the PCB is flexible, i.e., it is a flexible film PCB. In some embodiments, the capsule has a central axis defining an axial direction, a front end, and a rear end opposite said front end in the axial direction, and comprises a container formed by one or more walls not having the slot antenna disposed therein, the container extending in the axial direction from the front end and having the inner chamber; and the cover may be removably attached to the container and is adapted to cover the rear portion of the container. In some embodiments, the cover is adapted to form a flange when attached to the container. The cover housing the slot antenna is dimensioned to provide the capsule with a flange. This flanged cover simplifies its removal for access to the inner chamber. The cover can be removably attached to the container by means of fasteners such as one or more threaded through-holes and corresponding screw(s) or similar fasteners to be inserted into said hole(s). It is noted that fasteners in the form of one or more threaded holes or through-holes are also provided at the rear end of the container; the screw(s) are inserted into the hole(s) in both the cover and the container to secure them together. In some cases, the back of the container is shaped to also provide a flange to the capsule; that is, each of the back portions of the container and the lid is shaped to form a flange. Providing the flange on the back of the container can further simplify the docking and undocking processes, as the fasteners can be arranged more easily due to the matching shapes of both flanges. In some embodiments, one or more walls of the capsule (including or not, or being or not, at least one wall with the slot antenna disposed therein) comprise one or more holes adapted to receive one or more wires. In some embodiments, the electronic device comprises the one or more wires. The electronic device inside the capsule can be electrically coupled to components within the capsule (e.g., one or more sensors, a battery, etc.) or to another electronic device outside the capsule via a wired physical link in the form of one or more cables. For this purpose, the capsule walls can be provided with through-holes through which the cable(s) extend, allowing one end of the cable(s) to be inside the inner chamber for connection to one or more components of the electronic device, and the other end of the cable(s) to be outside the capsule for connection to the external component(s) or the other electronic device. In some embodiments, the capsule further comprises a shield disposed adjacent to the at least one wall that has the slot antenna arranged therein. Preferably, the shield is disposed on the outer surface of the at least one wall (i.e., the surface of the capsule most facing outwards), although it could also be QbRbnn / PZnZ / B / YIAI be arranged on the inner surface of at least one wall (i.e., the capsule surface facing the inner chamber). When earthmoving machinery operates in environments or terrains with extreme adverse conditions, the ingress of fines into the housing increases, raising the pressure on at least one wall. In such cases, a shield on the housing provides an additional layer of protection. The shield is preferably a cover made of an electrically non-conductive but impact- and abrasion-resistant material. The shield may include a protrusion with a shape and dimensions that match the shape and dimensions of the slot antenna, thus working in conjunction with the slot antenna to further protect at least one wall and prevent the ingress of fines. In some embodiments, the capsule further comprises a lid attachable to at least one wall with the slot antenna or cover, the lid comprising one or more protrusions for contacting cavity walls. In some of these embodiments, the one or more protrusions comprise a plurality of protrusions, the protrusions being separated and parallel to each other. In some of these embodiments, the lid is made of a material such as, for example, ethylene propylene diene monomer rubber (EPDM rubber), Hypalon, Viton, polyurethane, etc.; the material preferably exhibits some flexibility. The cover, due to its material, introduces negligible propagation losses, if any at all. Since the cover protects the slot antenna, it prevents particles from entering the inner chamber through the slot antenna, and the protrusions increase friction between the capsule and the cavity, ensuring the capsule remains securely attached. In some embodiments, the lid is removable and attachable to the cover. In some embodiments, the lid comprises a recess that fits within one or more protruding surfaces of the cover. A second aspect of the disclosure relates to a device for an earthmoving machine, the device comprising a capsule according to the first aspect of the disclosure, and a cavity having the capsule disposed therein. The electronic device protected by the capsule generates and, preferably, processes measurements taken on the device, for example, the stresses exerted on the device. The capsule can be secured to the cavity by means of fastening known in the art, for example, but not limited to, adhesive, space-filling material between the QbRbnn / PZnZ / B / YIAI capsule and cavity which is preferably flexible, epoxy, foam, etc. In some embodiments, the device is a system for adjusting or coupling wear elements. The fitting or coupling system is a mechanical fastening between a female portion or cavity of the tooth and the male portion or nose of an adapter. In some embodiments, the cavity is on the adapter and the nose is on the tooth; these types of couplings are called reverse coupling systems. In some embodiments, the device is a wear item. The arrangement of the capsule in a wear element or in another wear element influences both the measurements taken and the propagation of electromagnetic waves due to the presence of other wear elements, soil and / or both dimensions and material of the wear element itself that interfere with the propagation of the waves. In some embodiments, the wear element is an adapter, an intermediate adapter, or a cast / welded nose. Hereafter, the term "adapter" encompasses the adapter for two-part systems, the intermediate adapter for three-part systems, and also a nose welded or cast onto the blade, and it shall be understood that the disclosure covers embodiments with all alternative wear element systems. The adapters have a first fixing end intended to couple the adapter to the tooth, and a second fixing end intended to couple the adapter to the blade or another adapter (usually in the case of an intermediate adapter). Arranging capsules in the adapter or on the fused / soldered nose can result in more cost-effective capsules than a capsule arrangement on the teeth. Adapters or fused / soldered noses are replaced less frequently than teeth; therefore, new capsules need to be supplied less often than when arranged on the teeth. This, in turn, also reduces the disposal of capsules and / or capsule components, even if they are recycled, because fewer capsules and electronic devices need to be produced in the first place. In some embodiments, the wear element is a tooth. The teeth have a wear end intended to wear down with use, and a locking end intended to attach the tooth to an adapter. In this sense, the fixing end has a cavity portion adapted to receive the male coupling portion, respectively, of an adapter. Qfrpfrnn / eznz / B / YiAi intermediate or a cast / welded nose (depending on whether the wear element system is a two-part system, e.g., tooth and adapter, a three-part system, e.g., tooth, intermediate adapter, adapter, or a cast / welded nose). The female portion has a cavity to receive the male portion of the other wear element in the system; the male portion is also known as the nose. In some embodiments, the cavity is located within the female portion, either of the tooth or the second fixing end of the adapter. In some of these embodiments, the cavity is formed in a wall of the adapter's nose. The male portion received in the female portion prevents the capsule from moving or falling off the wear element, in addition to the fastening means used to secure the capsule to the cavity. When the cavity is formed in a wall that is as close as possible to the wear end, strain measurements are taken closer to the wear end, which could result in more accurate detection in some types of detection, for example, strain detection. In some embodiments, the cavity is arranged on an external surface of the wear element. In some embodiments, the cavity is arranged on a surface of the tooth that is at an end opposite to the wear end. The surface with the cavity formed in it is preferably in contact with the adapter when the tooth is attached to it. The adapter protects the capsule from falling off the tooth. Furthermore, this arrangement results in fewer interfering elements or materials that negatively affect the propagation of electromagnetic waves. In some embodiments, the cavity is located in the male portion. In some of these embodiments, the cavity is on a surface at a front end of the male portion, i.e., the end furthest inwardly inserted into the female portion of the receiving wear element. In some other embodiments, the cavity is adjacent to a through-hole of the adapter or tooth for receiving a pin to mechanically secure the adapter to the tooth; in these cases, the cavity is preferably parallel to the through-hole. In some embodiments, the cavity is located on the rear portion of the adapter. In some of these embodiments, the cavity is on a surface from which the male portion protrudes at the first fixing end. In some other embodiments, the cavity is on an external surface of the rear portion. In some embodiments, an outermost surface of at least one of the walls having the slot antenna disposed therein is flush with a surface of the wear element (i.e., the tooth or the adapter) where a cavity opening is formed. Positioning the slot antenna flush with the surface where the cavity opening begins significantly reduces propagation losses of the electromagnetic waves radiated and / or captured by the slot antenna compared to propagation losses when the slot antenna is inside the cavity. Consequently, the transmitted power can be lower than in the latter case, or remain the same, but the received power will be higher. In some embodiments, the device is one of: a boom, an arm, a hydraulic cylinder such as, for example, a bucket cylinder, traction means such as, for example, a crawler tractor, or a cab. The capsule protects the electronic device or its components that will be housed within it. Consequently, in addition to protecting the device and / or its components, the capsule enables wireless data transmission and / or reception. Preferably, but not necessarily, the device includes a cavity to receive and house the capsule, at least when the capsule's location within the device is such that it could be exposed to the ground and thus subject to wear; the cavity reduces the capsule's exposure. By way of example, when the device is a traction device, the traction device is preferably provided with such a cavity adapted for the capsule. When the device is a cabin, the capsule is preferably arranged in a lower part of the cabin. In some embodiments, the cavity adapted to receive the capsule has an L-shaped opening, i.e., the opening is formed in place of two walls that are not parallel. A third aspect of disclosure relates to an earthmoving machine comprising one or more capsules according to the first aspect of disclosure, and / or one or more devices according to the second aspect of disclosure or according to the eighth aspect of disclosure, and / or one or more apparatuses according to the seventh aspect of disclosure. QbRbnn / PZnZ / B / YIAI The earthmoving machine may have one or more capsules inserted into parts of it so that the electronic device(s) it contains can process data and transmit it to one or more electronic devices located away from the capsules, and / or so that the electronic device(s) it contains can process data and the capsule(s) can be removed more easily and reliably. When the parts are wear items, the machine may have the capsules inserted into one, several, or all of the wear items of the same type, for example, a tooth, adapter, or cast lip. In addition, the capsules may be inserted into wear items of different types, for example, one capsule in one, some, or each tooth, and one capsule in one, some, or each adapter. In some embodiments, the earthmoving machine further comprises both a wireless data receiver and at least one processing unit, which are located away from each of the one or more capsules or from each of the one or more devices, e.g., wear items. The earthmoving machine can monitor the wear level of its components based on wireless data signals transmitted from each sensor. At least one processing unit is configured to digitally process these wireless data signals and determine the wear level of the component associated with them. In some embodiments, at least one processing unit is configured to digitally process wireless data signals for one or more of the following: predicting device maintenance, e.g., wear item, associated with the wireless data signals; informing an earthmoving machine operator or a control center of the earthmoving machine's ground contact operations; and controlling the earthmoving machine (e.g., adjustments to the angle of attack, adjustments to the path of excavating implements when contacting the ground, adjustments to the force applied by the earthmoving machine, etc.). A fourth aspect of the disclosure relates to a method of manufacturing a capsule in accordance with the first aspect of the disclosure, the method comprising the step of forming or adding a slot antenna in at least one wall of the capsule walls. The slot antenna may be shaped to have one or more features as described with reference to embodiments of the first aspect of the disclosure. When at least one wall is electrically conductive, as when Qfrpfrnn / eznz / B / YiAi comprises, for example, electrically conductive metallic material; the slot antenna is formed by removing part of the material from at least one wall or by producing the at least one wall with a slot already formed in it. When the at least one wall is not electrically conductive, as when it comprises, for example, plastic, a resin, etc., the slot antenna is formed by adding electrically conductive material to the at least one wall so that it comprises a slot in it. In some embodiments, the process further comprises manufacturing the capsule by an encapsulation process in which the encapsulation is carried out in a mold shaped to the capsule, i.e., all the walls or all the walls except at least one wall with the slotted antenna are formed by the encapsulation process, and the at least one wall is manufactured such that it comprises or is made of electrically conductive material. In some of these embodiments, the mold is the cavity of a device according to the second aspect of the disclosure, i.e., the mold is a cavity formed in one of: a wear element, a boom, an arm, a hydraulic cylinder, traction means, or a cab. Furthermore, in some of these embodiments, the process also comprises installing the manufactured capsule in the cavity of the device and installing the device on an earthmoving machine. The capsule can be produced using an encapsulation process with, for example, an epoxy resin that forms the capsule walls. The slot antenna is then formed by adding an electrically conductive component—that is, a component made of electrically conductive material—to at least one of the capsule walls, including the slot. The encapsulation can be done in a mold adapted for this purpose, or the device where the capsule will be inserted during the use of the earthmoving machine can also be used as a mold. In some embodiments, the encapsulation process is carried out with the electronic device or its components already inside the mold. In this way, the electronic device or its components are enclosed within the capsule during the manufacturing process. In some embodiments, the procedure further comprises encapsulating the manufactured capsule to at least fill the slot antenna slot with dielectric material. In some of these embodiments, the encapsulation process further fills the capsule's inner chamber with the electronic device. Qfrpfrnn / eznz / B / YiAi partially or completely introduced into it. The capsule is manufactured using a different process, and once manufactured, it is partially or completely filled with dielectric material through the encapsulation process. The dielectric material prevents particles from entering the inner chamber and can also further protect the contents of the inner chamber when the material fills it. In some embodiments, the process also includes manufacturing the capsule walls from an alloy using a mold, for example, by forging or microcasting. The alloy can be, for example, a material with a hardness between 20 and 50 HRC, such as steel, for example, 30CrNiMo8 (AISI 4340), 42CrMo4 (AISI 4137, AISI 4137H), 34CrNiMo6 (AISI 4337), 36NiCrMo16, etc. In some embodiments, the procedure further comprises providing fastening means; and attaching at least one wall to one or more walls of the capsule, in a removable manner, using the fastening means. In some embodiments, the procedure also includes stages of a procedure according to the fifth aspect below. A fifth aspect of disclosure relates to a manufacturing process for a device, e.g., a wear item, in accordance with the second aspect of disclosure, the process comprising the steps of: forming, in the device, the cavity to receive a capsule in accordance with the first aspect of disclosure; and inserting the capsule into the formed cavity. The device cavity may be formed in such a way as to have one or more features as described with reference to the embodiments of the first and / or second aspect(s) of the disclosure. A sixth aspect of the disclosure relates to a monitoring system for monitoring the degree of wear of a device, e.g., wear item, in accordance with the second aspect of the disclosure, the monitoring system comprising: one or more capsules in accordance with the first aspect of the disclosure, each capsule of the one or more capsules being installed in a different device; a wireless data receiver for receiving wireless data signals from each capsule of the one or more capsules; and at least one processing unit configured to digitally process the wireless data signals in order to determine a degree of wear of the device associated with the wireless data signals. Qfrpfrnn / eznz / B / YiAi In some embodiments, the monitoring system also comprises a control center, the control center being located away from the one or more capsules and comprising both the wireless data receiver and at least one processing unit. In some embodiments, the monitoring system further comprises an earthmoving machine, with the one or more capsules installed in a device separate from the earthmoving machine; the earthmoving machine comprises both the wireless data receiver and at least one processing unit, which are located away from each of the one or more capsules. In some embodiments, at least one processing unit is further configured to digitally process the wireless data signals for one or more of the following: predicting the maintenance of the device associated with the wireless data signals, informing an earthmoving machine operator or a ground contact operations control center of the earthmoving machine, and controlling the earthmoving machine (e.g., adjustments to the angle of attack, adjustments to the path of excavating implements upon contact with the ground, adjustments to the force applied by the earthmoving machine, etc.). A seventh aspect of the disclosure relates to an apparatus for an earthmoving machine, comprising: a sheet; fastening means for attaching the apparatus to a cavity of the earthmoving machine; and at least one electronic device; the at least one electronic device comprising a printed circuit board mechanically coupled to the sheet, and a wireless communications module preferably mounted on the PCB; furthermore, the sheet has a slot antenna disposed therein, and the slot antenna is electrically coupled to the wireless communications module. The device provides the earthmoving machine with data transmission and / or data reception capabilities, particularly within the machine unit housing the device. The plate with the slot antenna can be arranged to cover an opening through which the cavity is accessed, thus forming a protected volume due to the plate of the device and the cavity walls. Furthermore, this arrangement is advantageous for improving radio performance since the device with the cavity is generally made of a metallic material, thereby forming a Faraday cage. Thus, when the plate, and therefore the device, is further from the interior of the cavity, the electromagnetic waves radiated by the slot antenna can reach Qfrpfrnn / eznz / B / YiAi greater distances and electromagnetic waves radiated by other devices can reach the slot antenna with greater power. The electronic device enclosed as described above can communicate data, for example, transmit data it generates or processes, receive data that another electronic device outside the cavity is providing to the electronic device, and is also protected from compacted material and fines that reach the device during machine operation. The mechanical coupling of the PCB, the electronic device, and the foil also protects both the PCB and the electronic device thanks to the mechanical properties of the foil, which comprises or is made of a metallic material and may have dimensions adapted to withstand impacts, friction, wear, extremely high or low temperatures, and stresses resulting from contact with the machine floor and / or the environment in which the machine is located.In this regard, the sheet preferably comprises a material with a hardness between 20 and 50 Hrc, such as steel, for example, 30CrNiMo8 (AISI 4340), 42CrMo4 (AISI 4137, AISI 4137H), 34CrNiMo6 (AISI 4337), 36NiCrMo16, etc. Furthermore, the device is easily recyclable. When the device is to be dismantled, the electronic component and the PCB can be separated from the remaining components, and the device without the electronic component and PCB can be recycled along with the device in which it was installed, for example, as a wear item. In other words, since the materials of the device and the PCB may have the same or similar composition, both can be recycled together in such a case. The use of a slot antenna is also advantageous because it avoids other types of antennas less suitable for the harsh and stressful environments in which earthmoving machinery is typically found. For example, chip antennas often fail easily due to electrical circuit failures, and monopoles are prone to breakage upon impact. Slot antennas contain minimal electrical circuitry, and the metallic foil material not only protects the electronics but also provides the antenna with the rigidity needed to withstand the stresses of machine operation. In some embodiments, the electronic device also comprises one or more terminals adapted for electrical connection with an electrical power source. The slot antenna and electronic device components can be electrically powered by a power supply from the earthmoving machine such as Qfrpfrnn / eznz / B / YiAi an energy cell (for example, a battery, a solar cell, etc.) electrically connectable to the device by means of one or more terminals. In some embodiments, the electronic device also includes a battery. The slot antenna and electronic device components can be powered by at least one electronic device battery. In some embodiments, the fastening means comprise one or more of the following: a plurality of screws, a cap, adhesive, one or more solder joints, one or more mechanical clips, and a dielectric material. The dielectric material is preferably any material that can be used in an encapsulation process to secure the apparatus within the cavity. In some embodiments, the at least one electronic device comprises at least one sensor. In some of these embodiments, one of the at least one sensors is mounted on the PCB. In some of these embodiments, one of the at least one sensors is arranged in a channel of the foil. In some of these embodiments, one of the at least one sensors is neither mounted on the PCB nor arranged in a channel of the foil, but is electrically connected to the PCB. When at least one sensor comprises one or more sensors for measuring, for example, forces, stresses, wear, or presence, the sensor(s) may be fixed to the walls of the cavity into which the upper force or stress measuring device is inserted, for example, strain gauges, pressure gauges, accelerometers, etc. However, the sensor(s) use the slot antenna for data communication via its electrical connection to the PCB, which in turn passes the data to a processor in the electronic device for processing before transmitting the processed measurement data, or to wireless communication for transmission of the detected data. In some embodiments, the device is a capsule, in accordance with the first aspect of the disclosure. In this sense, the sheet is one of the walls of the capsule. In some embodiments, a slot in the slot antenna is filled with a dielectric material. An eighth aspect of the disclosure relates to a device for an earthmoving machine comprising: a cavity; and an apparatus according to the seventh aspect of the disclosure, the apparatus being inserted into the cavity. In some embodiments, the apparatus is inserted into the cavity in such a way that the sheet of the apparatus covers an opening that forms the cavity. Qfrpfrnn / eznz / B / YiAi In some embodiments, the apparatus sheet is flush with a surface of the device where the cavity opening is formed. In some embodiments, a chamber formed by cavity walls and the sheet is filled with a dielectric material, for example, by an encapsulation process. In some embodiments, the device is a wear element. In some of these embodiments, the wear element comprises one of: a tooth, an adapter, a wear cap, a protector, and a pin system. In some embodiments, the device is one of: excavation implements, a boom, an arm, a hydraulic cylinder, traction means, and a cab. A ninth aspect of the disclosure relates to a procedure comprising: providing an apparatus in accordance with the seventh aspect of the disclosure; arranging the apparatus in a cavity of an earthmoving machine device; measuring with the at least one sensor; and transmitting measurements from the at least one sensor by radiating electromagnetic waves with the slot antenna. In some embodiments, the device is a wear element. In some of these embodiments, the wear element comprises one of: a tooth, an adapter, a wear cap, a protector, and a pin system. The contact surfaces between teeth and adapters of a coupling system are particularly subject to loads such as friction, rubbing, and crushing between teeth and adapters during the operation of the earthmoving machine. The device provides protection for the electronic component, even when it is located on these wear elements. In some embodiments, the device is one of: excavation implements, a boom, an arm, a hydraulic cylinder, traction means, and a cab. In some embodiments, the procedure also involves receiving data on the device by capturing electromagnetic waves with the slot antenna. In some embodiments, the transmission of measurements takes place at least while the earthmoving machine is in contact with the ground. In some embodiments, the step of placing the device in the cavity comprises securing the device in the cavity by means of fastening means, such as screws, a cap, adhesive, one or more solder joints, one or more mechanical clips, and a dielectric material. When the apparatus is to be fixed with fastening means in the form of welded joints, the step further comprises welding one or more sides of the sheet to a surface Qfrpfrnn / eznz / B / YiAi where the cavity opening and / or cavity walls are formed. When the device is fixed with fastening means in the form of dielectric material, the step further comprises performing an encapsulation process whereby the dielectric material fills the cavity while the device is inserted into it. BRIEF DESCRIPTION OF THE DRAWINGS To complete the description and to provide a better understanding of the disclosure, a set of drawings is provided. These drawings form an integral part of the description and illustrate realizations of the disclosure, which should not be interpreted as restrictions on the scope of the disclosure, but simply as examples of how the disclosure may be carried out. The drawings comprise the following figures: Figure 1 shows a perspective view of a capsule according to realizations. Figure 2 shows a perspective view of a capsule wall according to embodiments, including a slot antenna on the wall. Figure 3 shows a cross-section of a capsule according to embodiments. Figures 4, 5 and 6 show perspective views of capsules according to realizations. Figure 7 shows a cross-section of wear elements illustrating positions where capsule cavities may be arranged according to embodiments. Figure 8 shows a cross-sectional view of a tooth with a capsule according to realizations. Figures 9-10 show perspective views of wear elements. Figure 11 shows an earthmoving machine illustrating devices thereof with positions where capsules can be arranged according to embodiments. Figures 12A-12E schematically show cross-sections of capsules according to embodiments. Figures 13A-13E schematically show slot antenna geometries for capsules according to embodiments. Figures 14A-14B show different views of an apparatus according to QfrRfrnn / eznz / e / YiAi realizations. Figures 15A-15B, 16A-16B and 17A-17B show apparatus according to embodiments, including cross-sections of the apparatus while inserted into a cavity. Figure 18 shows a cross-section of an apparatus according to embodiments while it is inserted into a cavity. Figures 19A-19B show different cross-sections of a capsule according to embodiments. Figures 20A-20B show different views of a protector as provided in a capsule according to embodiments such as those in Figures 19A-19B. Figure 21 shows an exploded view of a capsule according to embodiments. DESCRIPTION OF THE WAYS TO CARRY OUT THE INVENTION Figure 1 shows a perspective view of a capsule 10 according to realizations. The capsule 10 is adapted for insertion into a wear element of an earthmoving machine, preferably into a cavity formed in a wear element. The capsule 10 has two or more walls 15a, 15b, at least one first wall 15a of which has a slot antenna 20 formed therein. The entirety of at least one first wall 15a, or at least a portion surrounding the slot of the slot antenna, comprises or is made of an electrically conductive material such as a metal, for example, an alloy, allowing the flow of current(s) for radiation and capture of electromagnetic waves. The capsule 10, when all walls 15a, 15b thereof are mechanically coupled, has an inner chamber (illustrated, for example, in Figure 3 as inner chamber 16) adapted to house and protect an electronic device (illustrated, for example, in Figure 3 as electronic device 30).In this embodiment, the slot of the slot antenna 20 is filled with dielectric material 22 so that, for example, no dirt enters the inner chamber. The first wall 15a (or first walls 15a) has a maximum length in a particular longitudinal direction, in this case along the illustrated Y-axis, a maximum width in a particular first transverse direction, in this case along the illustrated X-axis, and a thickness in a second transverse direction, in this case along the illustrated Z-axis. QfrAfrnn / eznz / B / YiAi Slot 20 antenna preferably has a maximum length, which is the length measured along an axis that results in the maximum dimension of the Slot 20 antenna, in the longitudinal direction, which is at least 60% and less than or equal to 100% of the maximum length of wall 15a (or walls 15a). In this example, the first wall 15a is a cover that can be detached from a second wall or walls 15b, which in this case is a single second wall 15b shaped to form a container, whereas in some other embodiments, two or more second walls 15b are arranged and coupled to form the container with the inner chamber 16 inside. The first wall 15a is mechanically coupled to one or more of the second walls 15b by means of fasteners such as screws 19a. The fasteners for the first wall 15a also include respective threaded through holes, and the second wall(s) 15b include fasteners in the form of respective threaded holes or through holes (not shown in Figure 4). The first wall 15a preferably comprises one or more projecting surfaces 65 extending parallel to the larger surface of the first wall 15a; the one or more projecting surfaces 65 preferably comprise or are made of a metallic material, for example, steel. The projecting surface(s) 65 assist in the extraction process of the capsule 10 by supporting a torque applied thereto to rotate the capsule 10. For the sake of clarity, the X, Y, and Z axes represented in Figure 1 are also represented in the following figures with the same orientation relative to the elements shown. It will be evident that other definitions of X, Y, and Z are also possible without departing from the scope of this disclosure. Figure 2 shows a perspective view of a wall 15a of a capsule 10 according to embodiments, including a slotted antenna 20 disposed thereon. The side of wall 15a shown corresponds to an inner side of wall 15a, i.e., it is the side of wall 15a facing an inner chamber of the capsule. In some examples, the wall 15a shown is provided as wall 15a in the capsule 10 of Figure 1. In this example embodiment, wall 15a includes a projecting surface 23 that extends into the inner chamber when the capsule is provided. The projecting surface 23 may be shaped to improve the attachment of wall 15a to another capsule wall or walls to close the capsule; thus, the projecting surface 23 may result in a hermetic seal of the walls. The slot antenna 20 is also formed on this surface. Qfrpfrnn / eznz / B / YiAi outgoing 23. Wall 15a includes fastening means in the form of threaded through-holes 18a for removable coupling with another wall or walls of the capsule, and threaded holes 18b for attaching a printed circuit board 32, i.e., PCB, of an electronic device. The electronic device also includes fastening means by means of screws 39 that engage with the threaded holes 18b in wall 15a. The PCB 32, which is arranged parallel to and adjacent to wall 15a, also includes holes for receiving the screws 39. It will be evident that other fastening means may be used instead of these threaded holes 18a and 18b and the respective screws 39. In this example embodiment, the electronic device is connected to the slot 20 antenna via PCB 32, more specifically PCB terminals 35 and 36, or wall 15a, to power the slot 20 antenna. Terminals 35 and 36 can be, for example, spring contacts with connectors, soldered terminals as shown in Figure 2, snap-fit ​​contact pads, etc. Also, in some embodiments, one or more wires connect the electronic device to the slot 20 antenna. Figure 3 shows a cross-section of a capsule 10 according to embodiments. The plane intersecting capsule 10 for the cross-sectional view is an XZ plane. As explained above and best seen in this Figure or in Figure 4, the second wall 15b has a shape such that it forms a container. As shown in this Figure, the inner chamber 16 houses and protects the electronic device 30, which includes the PCB 32 and a battery 40. The battery 40 is electrically connected to the PCB 32 to power the electronic components of the PCB and the slot antenna 20. The battery 40 is secured inside the inner chamber 16 by means of fastening such as clamps (lustered, for example, in Figure 4 as clamps 48), screws 49, and threaded holes 18d formed in the second wall 15b. Figure 4 shows a perspective view of a capsule 10 according to realizations. The wall fixing means 15b in the form of threaded holes receive screws 19a to couple the first wall or cover 15a to the second wall or container 15b. Although the polished 40 battery occupies a significant amount of the volume within the inner chamber 16, it will be noted that other types of batteries are also possible within the scope of this disclosure. By way of example only, a single or several button cell batteries may be used. Figure 5 shows a perspective view of a capsule 10 according to realizations. Capsule 10 includes first, second, and third walls 15a-15c. First wall 15a is removably attached to second wall 15b of capsule 10, and second wall 15b is preferably permanently attached to third wall 15c, the latter being shaped like a container to house an electronic device in a protected manner. Second wall 15b is shaped to provide a flange to third wall 15c, and first wall 15a is similarly shaped to form a flange. When capsule 10 is provided with a flange, the removal of the first wall 15a may be easier to inspect the inside of capsule 10, retrieve the contents or replace them, for maintenance purposes or for recycling, for example. In comparison with the embodiments illustrated in Figures 1-4, the slot antenna 20 of capsule 10 in Figure 5 is a straight slot antenna with a single straight segment. Figure 6 shows a perspective view of a capsule 10 according to realizations. In comparison to the embodiment in Figure 5, the slot antenna 20 of capsule 10 in Figure 6 is not straight and comprises a plurality of segments. In this case, there are three straight segments arranged such that a longitudinal axis of each segment forms an angle other than 0° with respect to the longitudinal axis of the segment or segments to which it is connected. Although the slot antennas 20 of the embodiments in Figures 1-6 are arranged on an outer wall of the capsule 10, it is noted that slot antennas 20 arranged on one or more inner walls of the capsule 10, or between an inner and an outer wall, are also within the scope of this disclosure. When the slot antenna is arranged on an inner wall, the wall(s) between that inner wall and an opening in the cavity where the capsule is arranged is / are made of electrically non-conductive materials so as not to produce interference or block the propagation of electromagnetic waves. Figure 7 shows a cross-section of wear elements 100, 200 illustrating positions 60a-60c and 61a-61e where cavities for receiving capsules can be arranged according to embodiments; for illustrative purposes only, cavity positions 60a-60c and 61a-61e are shown as rectangular polygons to represent the possible placement of cavities according to embodiments. The plane intersecting wear elements 100 and 200 for the cross-sectional view is an XZ plane. For clarity, this plane is illustrated in both Figure 9 with arrow line 150 and Figure 10 with arrow line 250. A first wear element 100 is a tooth 100, and a second wear element 200 is an intermediate adapter 200, but in other embodiments the second wear element is an adapter when a two-part wear element system is provided. Tooth 100 comprises a female portion 110 adapted to receive a male portion 205 of the intermediate adapter 200 when an earthmoving machine is to carry out ground contact operations. A first position 60a for a capsule receiving cavity (illustrated in Figure 8 as cavity 126) in tooth 100 is within the female portion 110. Preferably, the cavity is formed in a wall 111 of the female portion 110 that is closest to a wear end intended to wear with use. The wear end is the front portion of tooth 100 and is the end intended to contact the ground during operation of the earthmoving machine. The wear end is opposite a rear end through which the male portion 205 of the intermediate adapter 200 is received. Both the wear end and the rear end are illustrated in Figure 8 as wear end 101 and rear end 102. A second position 60b for a cavity (illustrated in Figure 9 as cavity 127 with dashed lines for illustrative purposes only) on tooth 100 is an external surface (illustrated in Figure 9 as external surface 106) that is intended to come into contact with the ground during the operation of the earthmoving machine; i.e., the external surface is a surface intended to wear out with use. Another position 60c for a capsule receiving cavity (illustrated in Figure 9 as cavities 125a, 125b, the latter with dashed lines for illustrative purposes only) on tooth 100 is a surface at the rear end of tooth 100; with reference to Figures 8 and 9, this surface is surface 121. The cavity, shown in Figure 9 as cavity 125a or cavity 125b, is on one side of the rear end that comes into contact with the intermediate adapter 200 when they are mechanically coupled. For mechanical coupling of both tooth 100 and intermediate adapter 200, The male portion 205 of the intermediate adapter is inserted into the female portion 110 of tooth 100 to receive the intermediate. While inserted, fastening means in the form of, for example, a pin are inserted both into a through hole (shown with numerical reference 120 in Figure 8) of tooth 100 and into a through hole 220 of the intermediate adapter 200. The first and second positions 61a, 61b for a cavity (illustrated in Figure 10 as cavities 225, 226, the latter with dashed lines for illustrative purposes only) in the intermediate adapter 200 are in the male portion 205. The cavity may be adjacent to the through-hole 220 for receiving the pin, and is preferably parallel to it. The cavity may be arranged in a portion of the male portion 205 as close as possible to a front end thereof (i.e., the end to be inserted into the female portion 110 of tooth 100, shown as cavity 226 in Figure 10) or in a portion of the male portion 205 closer to a rear end thereof.It may be preferable to arrange the cavity in accordance with the latter, i.e., as cavity 225 in the embodiment of Figure 10, to minimize reductions in the mechanical strength of the male portion 205 at its front end, which usually suffers greater stress during the operation of the earthmoving machine. A third position 61 c for a cavity (illustrated in Figure 10 as cavity 227 with dashed lines for illustrative purposes only) in the intermediate adapter 200 is the surface 206 of the male portion 205 that is at the front. Another position 61d for a cavity (illustrated in Figure 10 as cavity 228 with dashed lines for illustrative purposes only) in the intermediate adapter 200 is the surface 208 of the posterior portion 207. Typically, such surface 208 is in contact with the posterior surface of tooth 100, thereby blocking the cavity opening. In this way, the capsule cannot fall out of the cavity even if the means of securing the capsule within the cavity fail. Another position 61 and further for a cavity (polished in Figure 10 as cavity 229 with dashed lines for illustrative purposes only) in the intermediate adapter 200 is an external surface (polished in Figure 9 as external surface 106) of the rear portion 207 and may wear out with use as it comes into contact with the ground. It will be noted that although Figure 7 shows a system of wear elements in which the tooth 100 comprises a female portion 110 at its fixing end, and the intermediate adapter 200 comprises a male portion 205 at its first fixing end (i.e., Qfrpfrnn / eznz / B / YiAi the end for customer attachment 100), in other embodiments the wear element system comprises the same wear elements (or an adapter instead of the intermediate adapter 200) wherein the tooth 100 comprises a male portion at its attachment end, and the intermediate adapter 200 comprises a female portion at its first attachment end. In such cases, the described cavity positions 60a, 61a-61c can be interchanged so that they are on the female portion of the intermediate adapter 200 and the male portion of the tooth 100, respectively. Figure 8 shows a cross-sectional view of a wear element 100, specifically a tooth 100, with a cap 10 according to embodiments. The plane intersecting tooth 100 and 200 for the cross-sectional view is an XZ plane, as is the plane corresponding to arrow line 150 in Figure 9. A cavity 126 is formed within a female portion 110, on the frontmost wall 111 of the female portion 110, i.e., on a wall 111 closest to the wear end 101. Note that, in other embodiments, the cavity 126 is formed on a different wall within the female portion 110. As can be seen, the female portion 110 is shaped and sized to receive a male portion of an intermediate, while the cavity 126 is shaped and sized to receive the cap 10. The through-hole 120 of the tooth 100 will align with the through-hole of the intermediate adapter when the latter is inserted into the tooth, thus allowing the two wear elements to be mechanically coupled with a pin. Preferably, cavity 126 is shaped such that a cover 15a of capsule 10 is as close as possible to the rear end 102, particularly when such cover 15a provides capsule 10 with a flange. By removing the fastening means of cover 15a, either while capsule 10 is inside tooth 100 or after capsule 10 has been removed from it, personnel can inspect the device(s) and their components housed in capsule 10. It may also be preferable to dimension cavity 126 and capsule 10 such that, when capsule 10 is inside cavity 126 and the slot antenna is formed, for example, in cover 15a, the slot antenna is flush with the wall 111.The slot antenna is considered flush when the outermost face of the slot antenna is coplanar or nearly coplanar with at least a portion of the wall where the opening of the 126 capsule receiver cavity is formed; the face and wall are nearly coplanar when the depth difference is less than 20 mm, and preferably less than or equal to 10 mm and / or 5 mm. When it is not flush with the wall. Qfrpfrnn / eznz / B / YiAi 111, the capsule and slot antenna are preferably positioned further inward in the cavity to increase the protection of both. Figure 9 shows a perspective view of a wear element 100, particularly a tooth 100. In this embodiment, tooth 100 does not include the capsule receiving cavity of the embodiment in Figure 9, but includes a cavity 125a formed on the surface 121 located at the rear end 102 of tooth 100. As seen in Figure 7, when the intermediate adapter 200 is coupled to tooth 100, a surface of the adapter adjacent to the male portion 205 (or female portion when the first fixing end of the intermediate adapter or adapter includes it) comes into contact with the surface 121, thus securing the capsule in addition to securing the means of fixing it. Figure 9 also shows, with dashed lines, another possible cavity 125b formed on surface 121, but such that the cavity opening is L-shaped. A first portion of the opening is on surface 121, while a second portion of the opening is on a surface inside the female portion 110. When the intermediate adapter is connected to the tooth, the two parts of the opening are blocked by the intermediate. In addition, another possible cavity 127 formed on the external surface 106 of tooth 100 is shown with discontinuity. Figure 10 shows a perspective view of a wear item 200, particularly an intermediate adapter 200, but it could equally be an adapter when the wear item system is a two-part system. The intermediate adapter 200 has a front end 201 with the male portion 205 and a rear end 202 with a rear portion 207 that provides a second attachment end for attachment to an earthmoving machine blade, via an adapter, a welded nose, or a cast nose. A cavity 225 is arranged in the male portion 205 and adjacent to the through-hole 220 for the pin. In this case, the cavity 225 is, relative to the through-hole 220, closer to the rear end 202 than to the front end 201. Conversely, in other embodiments, a cavity 226 is arranged closer to the front end 201 than to the rear end 202 compared to the position of the through-hole 220. This part of the male portion 205, which is close to the neutral plane, is subject to less stress and deformation than other parts of the adapter 200, and is also subject to fewer or less intense lateral impacts than other parts of the adapter 200.Furthermore, this part of the male portion 205 is less prone to material compaction, which normally occurs on surfaces between the teeth and adapters and where the removal of such material is more difficult, such as on the front part of adapter 200. These characteristics make the cavities 225 and 226 next to the through hole 220 suitable for the placement of a capsule, not only to increase the service life of the capsule and the electronic device it protects, but also to reduce losses in the transmission and reception of wireless signals and to provide on-site data during machine operation resulting from measurements taken by the electronic device. Other possible cavities are shown in the same Figure for illustrative purposes only. As an example, cavity 227 is shown formed on surface 206 at the front end 201, i.e., the attachment end of the tooth. As another example, cavity 228 is formed on surface 208 of the rear portion 207 from which the male portion 205 protrudes. And as in a tooth, another possible cavity 229 is formed on an external surface 229 of the rear portion 207; this surface 229 may contact the ground during ground contact operations. Figure 11 shows an earthmoving machine 300 illustrating devices thereof with positions where capsules can be arranged according to embodiments. The machine 300 comprises an arm 301, a hydraulic cylinder 302, a boom 303, wear parts 304, digging implements 305, traction means 306 and a cab 307. A capsule in accordance with the present disclosure may be arranged in each of these devices 301-307 in different embodiments. By way of example, capsules may be arranged in a position 311 of the arm 301 that, for example, is not subject to regular contact with the ground during ground contact operations, for example, on an upper half of the arm 301, and in a similar position 312 along the length of the hydraulic cylinder 302. Capsules may be arranged in a position 313 of the boom 303 that is preferably the closest to a joint with the arm 301. Capsules may be arranged in various positions 314 of wear items 304 as described, for example, with reference to Figures 7-10, and on the side faces or inside 315 of digging implements. Capsules may be arranged on the tracks 316 of crawler tractors of traction means 306, or under the cab 307. Qfrpfrnn / eznz / B / YiAi When capsules are placed in positions prone to wear, soil compaction, or impact, they are preferably arranged in cavities formed in devices 301-307 at these locations. Alternatively, the capsules may be placed directly on the surface of devices 301-307, i.e., not in any cavity, in which case they are secured to the devices 301-307 using fasteners such as bolts, welding, etc. Figures 12A-12E schematically show cross-sections of capsules 10a-10c according to embodiments. In Figure 12A, the slot antenna 20 of capsule 10a is positioned midway with respect to the illustrated X-axis. A PCB 32 of the electronic device 30 is oriented along an axial direction (the illustrated Z-axis) and is parallel to the slot antenna 20. More specifically, a length of the PCB 32 (along the illustrated Z-axis) is parallel to the slot antenna 20 (along the illustrated Z-axis). However, the PCB 32 is offset from the position of the slot antenna 20 (along the illustrated X-axis). The electronic device 30 preferably also includes at least one sensor 45 soldered to the PCB 32.The at least one sensor 45 can also be located away from the PCB 32 as in Figures 12B12D where at least one sensor 45 is fixed to a wall of the inner chamber 16, or even away from the capsule; in these cases, the electronic device 30 comprises an electrical connection and / or a wireless communication link between the at least one sensor 45 and the PCB 32 to send the measurements, and through the same or another electrical connection, the battery 40 powers the at least one sensor 45 if it is not provided with its own battery. In Figure 12B, the slot 20 antenna of capsule 10b is offset from the medium relative to the illustrated X-axis. In this embodiment, the PCB is also oriented along the axial direction and is not only parallel to the slot 20 antenna but also aligned with it. In Figure 12C, the slot antenna 20 is arranged as in the embodiment of Figure 11B. The PCB 32 is perpendicular to the axial direction and is fixed to the wall 15a such that at least a portion of the slot antenna 20 is covered by the PCB 32. Such an arrangement can facilitate the electrical connection of the PCB 32 to the slot antenna 20. The capsules 10 of Figures 12A-12C each include four walls 15a-15d, a first wall 15a where the slot antenna 20 is provided, and second, third, and fourth walls 15b-15d mechanically coupled (preferably permanently, for example, welded together) to form a container. The first wall 15a may be removably coupled to the second and fourth walls 15b, 15d. In these examples, the wall 15a containing the slot antenna 20 comprises, either in an area surrounding the slot or throughout the entire wall, electrically conductive material so that the slot antenna 20 is capable of radiating and receiving electromagnetic waves. When the entire wall 15a does not comprise the electrically conductive material, one or more portions of it may comprise another material such as, for example, resin.The remaining walls, i.e., walls 15b-15d, may comprise electrically conductive or non-conductive material. In this example, a plug or cap made of dielectric material 22 is arranged in the slot of the slot antenna 20. The plug or cap can be fixed to the walls delimiting the slot with, for example, adhesive or fixing means. In Figure 12D, the capsule 10c comprises at least one wall 15a made of electrically conductive material where the slot antenna 20 is provided, and the at least one wall 15a is coupled with other walls 15b-15d made of a different material, whether electrically conductive or not. In this example, a snap-on plug or cap made of dielectric material 22 is provided on the at least one wall 15a where the slot antenna 20 is arranged. The plug or cap can be attached to the capsule wall 15a by, for example, adhesive or fastening means. In Figure 12E, the capsule 10c comprises the same walls 15a-15d and slot antenna, but instead of a plug or attachable cap, the dielectric material 22 fills the entire inner chamber 16 in addition to the slot antenna slot 20. In similar embodiments, the dielectric material 22 forms the walls (e.g., walls 15b–15d excluding the slot antenna 20, or all walls 15a–15d) and also fills the inner chamber 16, so that the walls and the filled inner chamber are made of a single piece; in this respect, the outer faces of the filler are capsule walls. Such capsules can be produced, for example, by an encapsulation process. In other embodiments, PCB 32, a sensor fixed to or connected to PCB 32, and / or battery 40 may be located outside the inner chamber 16, for example, in another cavity formed to receive said component(s), or they may be attached to one of the walls 15a-15d of the capsule 10 from the outside. In these embodiments, the electrical connection between component(s) outside the inner chamber 16 and component(s) inside the inner chamber 16 may be made by means of, for example, one or more cables, flexible printed circuit boards, etc. QbRbnn / PZnZ / B / YIAI It should be noted that the slot antenna 20 of embodiments such as those described with reference to Figures 12A-12E can be formed in the space between two or more adjacent walls. For example, the upper and lower walls 15a illustrated in Figures 12A-12E can each be a separate wall and arranged such that the slot is present between the two walls 15a, thus forming a slot antenna 20 when at least the portion surrounding the slot is electrically conductive. That is, the slot antenna 20 is formed by two or more walls 15a and the way they are coupled together. Figures 13A-13E schematically show 20a-20e slot antenna geometries for capsules according to embodiments. The 20a-20e slot antennas can be formed on one or more capsule walls. A first slot antenna 20a is a straight slot antenna because it has only one segment 21a, which is also straight in this example. The capsule in Figure 5 includes a slot antenna like the first slot antenna 20a. A second slot antenna 20b comprises three segments 21a-21c arranged such that a first, more intermediate segment 21a is connected, at one end thereof, to a second segment 21b and, at the other end thereof, to a third segment 21c. Longitudinal axes of the first and third segments 21a and 21c are represented by dashed lines for illustrative purposes only. An angle 22 formed between these longitudinal axes is also shown. A similar representation could be made with respect to the first and second segments 21a and 21b. The smaller or larger angle 22 could also be measured, but it is clear that whatever angle 22 is measured, the longitudinal axes form an angle other than 0s. A third slot antenna 20c comprises three segments 21a-21c arranged such that a first, more intermediate segment 21a is connected, at its respective ends, to the second and third segments 21b and 21c, forming 90° angles. As shown in this example, the segments 21a-21c do not necessarily have to be connected at their ends, but can be connected at any point along the length of the segments. The capsule in Figure 6 includes a slot antenna such as the third slot antenna 20c. A fourth slot antenna 20d comprises five segments 21a-21e. A first intermediate segment 21a is connected, at one end thereof, to a second segment 21b, which is in turn connected to a third segment 21c that is parallel to the first segment 21a. The first intermediate segment 21a is connected, at one end of the Qfrpfrnn / eznz / B / YiAi itself, to a fourth segment 21 d, which in turn is connected to a fifth segment 21 e that is parallel to the first segment 21 a. Another slot antenna 20e comprises a plurality of segments 21a-21e, including five segments. The arrangement of segments 21a-21e is somewhat similar to the arrangement of the fourth slot antenna 20d, but in this example, the third and fifth segments 21c and 21e extend inwards. In this way, the length of the wall or walls where the slot antenna 20e is mounted is reused by the antenna to lengthen its radio path length, that is, to lengthen the path that currents will follow to radiate and / or receive electromagnetic waves. In this case, this path is the concatenation of all segments 21a-21e, so its length is the sum of the lengths of segments 21a-21e. The different arrangements of the second, third, fourth, and fifth 20b-20e slot antennas are intended to increase the effective length of the 20 slot antenna based on, for example, the size of the capsule wall in which they are formed. In this way, the operating frequency of the 20 slot antenna can be reduced with a shorter wall length. Although the example slot antennas 20a-20e in Figures 13A-13E have straight segments, other embodiments may have similar or different slot antenna geometries in which one, some, or all of the segments are curved. Furthermore, slot antennas 20a-20e need not be symmetrical and may even have an irregular geometry. Slot antennas may also have a meander-like geometry designed to utilize a larger portion of the surface of the wall or walls on which they are mounted, thus increasing the radio length. In some embodiments, the maximum dimension of the slot antenna 20 (of embodiments such as, but not limited to, any of those in Figures 1 to 6, 12A to 12E, and 13A to 13E) is at least 40 mm. In some embodiments, the maximum dimension of the slot antenna 20 (of embodiments such as, but not limited to, any of those in Figures 1 to 6, 12A to 12E, and 13A to 13E) is equal to or less than 115 mm. The maximum dimension is understood to be the longest side of a rectangle (such as rectangle 25 shown with dashed lines in Figure 13D, but it is evident that a similar rectangle 25 can be drawn for any other slot antenna) enclosing a shape of the slot 20 with sides of the rectangle tangent to the slot 20; with reference to rectangle 25 in Figure 13D, the Qfrpfrnn / eznz / B / YiAi maximum dimension corresponds to the length of the side indicated by the letter L, which is greater than the length of the side indicated by the letter W. The maximum dimension of the slot antenna affects its radio performance for different frequencies, thus increasing or decreasing the gain at each frequency. In some embodiments, the maximum width of at least one of the walls where the slot antenna 20 is arranged (of embodiments such as, but not limited to, any of those in Figures 1 to 6, 12A to 12E, and 13A to 13E) is at least 20 mm. In some embodiments, the width is at most 60 mm. A rectangle enclosing the at least one wall can be drawn like rectangle 25 for a slot antenna, but with the sides of the rectangle tangent to the at least one wall; the maximum width in these cases is the length of the shorter side of the rectangle, that is, the one corresponding to the length W shown in Figure 13D, but with a rectangle for the at least one wall. The rectangle is thus drawn with respect to a particular longitudinal direction and a first transverse direction of the at least one wall. The width of the wall or walls affects the gain of the slot antenna; the width is measured along the direction of the two perpendicular directions that close the capsule and has the shortest length between those two perpendicular directions. In some embodiments, at least one of the walls where the slot antenna 20 is located (of embodiments such as, but not limited to, any of those in Figures 1 to 6, 12A to 12E, and 13A to 13E) has a thickness of at least 1.0 mm and, preferably, is less than or equal to 20.0 mm. In some embodiments, the thickness is between 2.0 mm and 8.0 mm, inclusive of the endpoints in that range. The thickness is the third dimension of the wall that is not included in the rectangle enclosing the at least one wall, i.e., the thickness in a second transverse direction. The thickness of the wall or walls can be selected based on the expected stresses or wear the capsule will experience during ground contact operations, depending on its location within the earthmoving machine. The thickness is measured along the inward direction of the inner chamber and therefore not along either of the two perpendicular directions that enclose the capsule—namely, the maximum length and maximum width. Thicknesses within the range mentioned above have been found to have little to no influence on the antenna gain. Qfrpfrnn / eznz / B / YiAi slot. Figures 14A-14B show different views of a 500a apparatus according to embodiments. The apparatus 500a comprises a sheet 515 with a slotted antenna 20 disposed thereon. Furthermore, in preferred embodiments such as those in these Figures, the sheet 515 also comprises at least one channel 25 for installing a sensor 90 of an electronic device 30, such as a Hall effect sensor, and protruding surfaces 65 that could facilitate the removal of the apparatus 500a when it is inserted into a device (as in Figure 15) by means of an extraction tool. In other embodiments, only one of these additional features, i.e., channel(s) 25 and protruding surface(s) 65, or neither of them, is present. An extraction tool can be partially inserted into a portion of the device 500a that is recessed relative to the protruding surface 65. The extraction tool is brought into contact with the protruding surface 65. The extraction tool is then rotated toward an opening in a cavity where the device 500a is inserted, or in other words, in an extraction direction. In this way, the extraction tool applies torque to the protruding surface 65, and as a result, the device 500a tends to rotate within the cavity. The extraction tool is preferably a pointed device such as, for example, a punch, a screwdriver, etc. The apparatus 500a further comprises the electronic device 30, which includes a printed circuit board 32 and a battery 40. The PCB 32 is mechanically coupled to the sheet 515 for improved resistance to, for example, impacts and stresses. For this purpose, fastening means such as screws 39 can join the PCB 32 to the sheet 515, which may include its own fastening means to cooperate with those of the PCB 32, for example, threaded holes in this case. The battery 40 is also preferably mechanically coupled to the PCB 32, for example, by means of clamps 48. Terminals 35 and 36 are arranged on or between PCB 32 and slot 20 to electrically connect the antenna to PCB 32 for power. A wireless communications module 38, mounted on PCB 32, controls the operation of the antenna so that it can radiate and / or receive electromagnetic waves. As mentioned above, the electronic device 30 may comprise a sensor 90 to be arranged in a channel 25, and / or a sensor not arranged in any channel, for example, mounted on the PCB 32. Qfrpfrnn / eznz / B / YiAi In other embodiments such as those in Figures 15A to 18, the 500a apparatus can be even more compact when the battery 40 of the electronic device 30 is one or a plurality of button cells. Figure 15A shows a perspective view of an apparatus 500b, and Figure 15B shows a cross-section of said apparatus 500b while it is inserted into a cavity 97. The apparatus 500b comprises, in addition to the sheet 515, one or more side walls 516 extending from the sheet 515 to form an open container intended to provide additional protection to the housed electronic device and to increase the rigidity of the apparatus 500b. The one or more side walls 516 may be mechanically coupled to the sheet 515, for example, they may be welded together, or the sheet 515 may be bent to form one or more side walls 516, i.e., the sheet 515 integrally provides the side wall or walls. As mentioned previously, the 40 battery is a button cell to reduce the profile of the 500b device. The screws 19a pass through the entire plate 515 and the side walls 516, but in other embodiments the through holes for the screws 19a are arranged only in the plate 515, i.e., they are outside the projection of the walls 516. The screws 19a fix the apparatus 500b to the cavity 97, which has holes arranged in at least one wall 99 thereof. The apparatus 500b is preferably arranged such that the sheet 515 covers an opening 96 of the cavity 97, and is preferably arranged flush with a surface 94 where the opening 96 is formed. In this way, the propagation of the electromagnetic waves radiated by the slot antenna is improved, and electromagnetic waves can be received with greater power than in an arrangement in which the sheet 515 is provided within the cavity 97. As can be seen, the electronic device of apparatus 500b is arranged on one face of sheet 515 that faces inward with respect to cavity 97. In this way, sheet 515 and the walls 99 of cavity 97 define a chamber that is protected by each of these members; the one or more side walls 516, in embodiments in which apparatus 500b includes them, also serve to protect the chamber. Particle ingress can be further reduced by providing a dielectric material in the slot of the slot antenna to cover it. And since the slot antenna is not inside this chamber, the Faraday cage formed by sheet 515 and the walls Qfrpfrnn / eznz / B / YiAi does not affect the radioelectric performance of the slot antenna. Figure 16A shows a perspective view of an apparatus 500c, and Figure 16B shows a cross-section of said apparatus 500c while it is inserted into a cavity 97. The apparatus 500c is similar to the apparatus 500b of Figures 15A-15B, but instead of screws, the apparatus 500c comprises a cap 70 disposed on the sheet 515 as a fastening means. The cap 70 includes protrusion(s) 71 or fin(s) for securing the apparatus 500c to the walls 99 of the cavity 97 and producing friction that more reliably retains the apparatus 500c inserted therein. The apparatus 500c preferably also comprises one or more side walls 516 (or the sheet 515 bent to form a side wall or walls) such that the cap 70 is supported by the side wall(s). Figure 17A shows a perspective view of an apparatus 500d, and Figure 17B shows a cross-section of said apparatus 500d while it is inserted into a cavity 97. The apparatus 500d comprises the sheet 515 and, as fastening means, one or more sides thereof are welded to walls 99 or to a surface 94 where the opening 96 of the cavity 97 is formed, thereby forming one or more weld joints 600. One or more sides of the sheet 515 may be arranged at an angle other than 90° with respect to a larger surface of the sheet 515, i.e., they are not perpendicular to a larger surface thereof (i.e., the one on which the slot antenna is arranged), which may facilitate the welding process. Figure 18 shows a cross-section of an apparatus 500e while it is inserted into a cavity 97. The apparatus 500e comprises dielectric material 601 fixed to the sheet 515 and an electronic device, and also fixed to the cavity walls 99. The dielectric material 601 is preferably applied by an encapsulation process. With reference to Figures 14A to 18, in those embodiments where the sheet 515 comprises one or more channels 25, and one or more Hall effect sensors are arranged in one of these channels 25, these channels 25 are preferably located on a face of the sheet 515 that faces outward from the cavity 97 so that the sensor(s) can detect the exterior of the device 95 without being blocked by the metallic material of the sheet 515. The Hall effect sensors are capable of detecting magnetic fields, and detect them better when arranged in such a channel since there are fewer disturbances to the magnetic fields than on the other face of the sheet 515. The sensor can be used for detecting drops in the machine device. Qfrpfrnn / eznz / B / YiAi earthmoving from another device of the earthmoving machine, for example, a wear element such as a tooth from another wear element such as an intermediate adapter, a welded adapter or a mechanically fixed adapter. For this purpose, the sensor detects magnetic fields from one or more magnets arranged in the other device in such a way that the magnetic fields of the same are mediated by the Hall effect sensor. In other embodiments, the electronic device of apparatus as described with reference to Figures 14A to 18 does not include battery 40, in which case the device and slot antennas can be powered by a separate power supply. Figures 19A-19B show different cross-sections of a capsule 10 according to embodiments. Capsule 10 includes a plurality of walls 15a-15b, and although not visible, one of the walls 15a has a slot antenna arranged on it. Inside the inner chamber formed by the plurality of walls 15a-15b is a PCB 32 electrically connected to the slot antenna and a battery 40. Capsule 10 also includes a shield 50 positioned adjacent to wall 15a with the slot antenna, specifically on an external surface thereof. The shield 50, also illustrated in Figures 20A-20B, protects wall 15a from, for example, fine particles. In an embodiment in which the capsule 10 comprises a cover 70, as in Figures 19A-19B, the protector 50 is preferably located between the cover 70 and the wall 15a with the slot antenna. Figures 20A-20B show different views of a protector 50 as provided in a capsule according to embodiments, such as those in Figures 19A-19B. The shield 50 is made of an electrically non-conductive material to avoid interfering with the transmission and / or reception of wireless signals by the slot antenna. The material of the shield 50 is preferably selected to make the shield 50 rigid, including but not limited to electrically non-conductive alloys. The shield 50 is preferably provided with fastening means 51, in this case through-holes for screws, although other fastening means, including adhesive, are also possible. On one side of the shield 50, there is preferably a protrusion 52 shaped and sized to match the antenna slot. When the shield 50 is arranged as in Figures 19A-19B, i.e., on the outer surface of the capsule, the side with the protrusion 52 faces the inner chamber. QbRbnn / PZnZ / B / YIAI and is positively coupled to the slotted antenna slot. Figure 21 shows an exploded view of a capsule 10 according to embodiments. The capsule 10 includes at least the plurality of walls 15a-15b providing the 5 inner chamber, a battery 40, a PCB 32, a slot antenna 20 in one of the walls 15a, a shield 50, fixing means in the form of screws 19a and cooperating nuts 19b, and a lid 70. In this text, the term includes and its derivations (such as understanding, etc.) should not be understood in an exclusive sense, that is, these terms should not be interpreted as excluding the possibility that what is described and defined may include other elements, stages, etc. On the other hand, disclosure is obviously not limited to the specific embodiment(s) described in this document, but also covers any variation that may be considered by any person skilled in the art (for example, with regard to the choice of materials, dimensions, components, configuration, etc.), within the general scope of the invention as defined in the claims.

Claims

1. A capsule (10) for protecting an electronic device (30) for an earthmoving machine, the capsule (10) comprising walls (15a-15d) enclosing an inner chamber (16) configured to house an electronic device (30); CHARACTERIZED IN THAT the capsule (10) comprises a slot antenna (20) disposed in at least one of the walls (15a-15d), and the at least one of the walls (15a-15d) in which the slot antenna (20) is disposed is a cover, wherein the cover (15a) can be removably coupled to one or more of the walls (15a-15d) of the capsule (10).

2. The capsule (10) of claim 1, CHARACTERIZED IN THAT the slot antenna (20) is adapted to operate at a frequency below 1000 MHz, and preferably between 430.0 MHz and 440.0 MHz.

3. The capsule (10) of any of the preceding claims, CHARACTERIZED IN THAT it further comprises dielectric material (22) that fills the slot of the slot antenna (20).

4. The capsule (10) of any of the preceding claims, CHARACTERIZED IN THAT the at least one of the walls (15a-15d) has a maximum length in a particular longitudinal direction, a maximum width in a particular first transverse direction and a thickness in a second transverse direction, wherein the maximum length is greater than or equal to the maximum width and wherein the slot antenna (20) has a maximum length in the longitudinal direction that is at least 60% and less than or equal to 100% of the maximum length of the at least one of the walls.

5. The capsule (10) of any of the preceding claims, CHARACTERIZED IN THAT it further comprises the electronic device (30), wherein the electronic device comprises an electrical power source (40) and is at least configured for wireless data transmission; wherein the electronic device (30) is electrically connected to the slot antenna (20); and wherein the inner chamber (16) houses the electronic device (30) or at least one or more components thereof. Qfrpfrnn / eznz / B / YiAi 6. The capsule (10) of claim 5, CHARACTERIZED IN THAT the electronic device (30) further comprises at least one sensor (45) configured to detect one or more of: tension, wear, pressure, temperature, acceleration, position, material or terrain, and drop of a wear element.

7. The capsule (10) of any of the preceding claims, CHARACTERIZED IN THAT the slot antenna has either a single straight segment or a plurality of segments, each segment being connected to one or more other segments.

8. The capsule (10) of any of the preceding claims, CHARACTERIZED IN THAT the cover (15a) where the slot antenna (20) is arranged comprises an electrically conductive material.

9. A device (100, 200, 301-307) for an earthmoving machine, CHARACTERIZED IN THAT it comprises: a capsule (10) as claimed in any of the preceding claims; wherein the device is one of: a wear element (100, 200, 304), digging implements (305), a boom (303), an arm (301), a hydraulic cylinder (302), traction means (306) or a cab (307).

10. The device (100, 200, 301-307) of claim 9, CHARACTERIZED IN THAT it further comprises a cavity having the capsule (10) disposed therein.

11. The device (100, 200, 301-307) of claim 10, CHARACTERIZED IN THAT the device is a wear element comprising a tooth (100), and wherein one of: - the cavity (126) is within a female portion (110) of the tooth (100); - the cavity (125) is on a surface (121) of the tooth (100) at an end (102) opposite a wear end (101) of the tooth (100); and - the cavity (127) is on an external surface (106). Qfrpfrnn / eznz / B / YiAi 12. The device (100, 200, 301-307) of claim 10, CHARACTERIZED IN THAT the device is a wear element comprising an adapter or intermediate adapter (200), the adapter or intermediate adapter (200) having a male portion (205) adapted for insertion into a female portion (110) of a tooth (100) and defining a first end of the wear element, and a rear portion (207) defining a second end of the wear element, and wherein one of: - the cavity (225-227) is located in the male portion (205), either on a surface (206) at a tooth contact end (201) or adjacent to a through hole (220) of the adapter or intermediate adapter (200) for receiving a pin for mechanically coupling the adapter or intermediate adapter (200) to the tooth (100) and preferably parallel to the through hole (220);- the cavity (228-229) is located in the posterior portion (207) either on a surface (208) from which the male portion (205) protrudes or on an external surface (209).; 13. The device (100, 200, 301-307) of any of claims 11 and 12, CHARACTERIZED IN THAT an outermost surface of at least one of the walls (15a-15d) having the slot antenna (20) disposed therein is flush with a surface of the wear element (100, 200) where a cavity opening (125-127, 225-229) is formed.

14. A method for manufacturing a capsule (10) as claimed in any of claims 1-8, the method being CHARACTERIZED IN THAT it comprises: manufacturing capsule (15A-15D) walls (15A-15D) from an alloy using a mold, or manufacturing capsule (15A-15D) walls (15A-15D) from a resin by an encapsulation process using a device (100, 200, 301-307) for an earthmoving machine as a mold wherein at least one wall (15A) of the walls (15A-15D) comprises or is made of electrically conductive material; forming or adding a slot antenna (20) in the at least one wall (15A); where at least one wall (15a) is manufactured in such a way as to form a cover (15a) that can be removably attached to one or more of the walls (15b-15d) of the capsule (10) to close the inner chamber (16). Qfrpfrnn / eznz / B / YiAi 15. The process of claim 14, CHARACTERIZED IN THAT the process comprises the wall manufacturing step (15a-15d) with the encapsulation process, and the encapsulation process is carried out with the electronic device (30) of the capsule (10) inserted into the mold.

16. The method of any of claims 14-15, CHARACTERIZED IN THAT it further comprises: providing fastening means; and attaching the cover (15a) to one or more walls (15a-15d) using the fastening means in a removable manner.

17. A method of any of claims 14-16, CHARACTERIZED IN THAT it further comprises: providing a device (100, 200, 301-307) according to any of claims 10-13; forming, in the device (100, 200, 301-307), the cavity (125-127, 225-229) adapted to receive the capsule (10); and introducing the capsule (10) into the formed cavity (125-127, 225-229).

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