TEMPERATURE PROBE AND DETECTION SYSTEM
Patent Information
- Authority / Receiving Office
- MX · MX
- Patent Type
- Patents
- Current Assignee / Owner
- VERSUNI HLDG BV
- Filing Date
- 2023-04-28
- Publication Date
- 2026-06-12
Smart Images
Figure MX434773B0
Abstract
Description
PROBE AND TEMPERATURE DETECTION SYSTEM nancnn / eznz / E / YiAi Field of invention This invention relates to a probe and temperature detection system, for example, for detecting the core temperature of a food during cooking. Background of the invention Many cooking and baking appliances make use of interactive recipes to ensure optimized flavor and wholesomeness of cooked foods. For these devices, it is often important to measure the core temperature of the food. For example, it is common to monitor the temperature of a steak during cooking to achieve a desired doneness, such as medium, medium-rare, etc. Similarly, it is also useful to accurately measure the doneness of other types of food, e.g., vegetables. There are a number of disadvantages associated with currently available temperature sensing techniques. For example, some temperature sensors require intrusive wiring that is inconvenient and can make it difficult for a user to operate the sensor easily and correctly. As another example, some temperature sensors require batteries, which can be problematic in terms of installation and replacement. Consumer feedback regarding wired temperature sensors is mostly negative, and consequently, there is a demand for practical wireless temperature sensing solutions. However, currently available wireless temperature sensing solutions typically involve wireless communication technologies such as Wi-Fi and Bluetooth, and are usually limited to a small operating temperature range that may be inadequate or insufficient for cooking applications (e.g., frying, baking, etc.). Other types of wireless temperature sensors currently available involve techniques based on the use of quartz crystals and / or surface acoustic waves, which significantly increases manufacturing and maintenance costs. A cost-effective wireless temperature sensor would be highly preferred by consumers from the standpoint of ease of use, as well as for achieving a desired level of flavor and wholesomeness in the resulting cooked food. WO 2021 / 058390 describes a temperature probe that includes a resonant circuit. The resonant circuit has a temperature-dependent resonant frequency based on a capacitor with a temperature-dependent capacitance. A detector unit is configured to interact with the resonant circuit to receive a response associated with the circuit's current resonant frequency. This probe eliminates the need for a wired connection between the sensing element and the detector unit. Instead, a wireless inductive coupling is formed between the resonant circuit and the detector unit. A control unit determines the circuit's current resonant frequency based on the received response and, in this way, determines the probe's temperature. The detector unit comprises a transmitter-receiver coil and interacts with the resonant circuit, e.g., by controlling the transmitter-receiver coil to perform a frequency sweep and excite the resonant circuit in the sensing element. One problem with using inductive coupling is that the resonant circuit coil needs to be parallel to the detector unit coil to ensure proper system operation. The core temperature probe also requires a section to penetrate the core of the item being monitored and an external handle, which may include, for example, the inductive coupling coil. Therefore, the probe takes up space on a cooking surface or in a cooking chamber. nancnn / pznz / E / YiAi Brief description of the invention The invention is defined by the claims. According to one aspect of the invention, a wireless temperature monitor probe is provided, comprising: a peak for insertion into an object for which a core temperature must be monitored, the peak has a temperature monitoring region; a head at a proximal end of the beak, the head being to remain outside the object; and a circuit having a temperature-dependent feature, wherein the circuit includes a sensor inductor coil for wireless interrogation by means of an external detector unit to determine, in this manner, the temperature in the temperature monitoring region, wherein the sensor inductor coil is located in the head (305), and wherein the beak has an elongated axis that is offset with respect to a plane of the sensor inductor coil. This temperature monitoring probe has a tip for insertion into an object, such as food to be cooked, and an external head. The tip of the probe that is inserted into the object can be considered the distal end, and the opposite end (where the head is attached) is the proximal end. The elongated shaft of the tip and the head are not flat, so there is a curve between them. This facilitates insertion of the tip while maintaining the desired orientation of the head, particularly to allow for proper communication with the remote detector unit. Furthermore, it allows the head to be positioned against the object so that the probe occupies a minimal amount of space. nancnn / eznz / E / YiAi The curve is, for example, between 90 and 180 degrees, between 135 and 180 degrees, or between 160 and 180 degrees. This forms a U-shaped curve or almost an LJ curve. The spike can then be inserted laterally (horizontally), and the head sits above the spike, also in a horizontal plane. This horizontal orientation of the head and / or spike is, for example, the desired orientation for interrogation by the detector unit. Because the sensor's inductor coil is located in the sensor head, the head's orientation is important to enable interrogation by the external detector unit. The head can be held by hand in a desired orientation (e.g., horizontal), and the probe can be inserted into the object to maintain that orientation. For example, the head can be mounted flat (horizontally) on top of the object. A minimum clearance between the tip of the pick to be inserted into the object and the head is, for example, in the range of 25 mm to 30 mm. When a U-bend is provided, this clearance, for example, corresponds to the depth at which the tip of the pick is inserted into the object. A peak diameter is, for example, in the range of 2 mm to 6 mm. This provides space for any of the circuit components to be formed internally within the peak, such as a temperature-dependent component like a capacitor, while preventing excessive damage to the object from inserting the peak. A length of the beak to insert into the object is, for example, in the range of 2.5 mm to 60 nm. The circuit, for example, comprises one or more components CO Γι nancnn / eznz / E / YiAi temperature-dependent characteristics. The components and the sensor inductor coil together form a resonant circuit. Components with temperature-dependent characteristics, for example, include a capacitor with temperature-dependent capacitance and / or a thermistor with temperature-dependent resistance and / or an inductor with temperature-dependent inductance. Therefore, passive circuit components with temperature dependence are used to form, with the sensor's inductor coil, a temperature-dependent impedance. This temperature-dependent impedance results in a temperature-dependent resonant frequency. Then, the resonant frequency of this circuit can be measured externally by the detector unit to determine the temperature. Temperature-dependent components are preferably at the peak, for example, near a peak tip. The pilco can be rotatably coupled to the head. This allows adjustment of the head's orientation after the pilco is inserted. The pilco may comprise a straight section and a curved section rotatably coupled together. This allows further adjustment of the probe's overall shape. The temperature monitoring probe is preferably used to monitor the core temperature of a food item during cooking. The invention also provides a wireless temperature monitoring system comprising: the temperature monitor probe as defined above; and a detector unit comprising a pickup coil for inductive coupling to the sensor inductor coil and a detection circuit. nancnn / rznz / E / YiAi The detector unit provides remote monitoring of the temperature monitor probe circuit using inductive coupling. Therefore, the probe does not require a separate power supply. The detector unit can be integrated into a cooking appliance. The detection circuit, for example, comprises a frequency sweep circuit and a processor to determine a resonant frequency of the temperature probe circuit. The invention also provides a cooking apparatus comprising the wireless temperature monitoring system defined above, the cooking apparatus comprising a housing, and wherein the collection coil of the detector unit is integrated into a portion of the housing. The detector unit's pickup coil may be integrated into a housing tap. These and other aspects of the invention will become evident from and will be clarified with reference to the modality(ies) described herein. Brief description of the figures For a better understanding of the invention, and to show more clearly how it can be carried out, reference will now be made, by way of example only, to the accompanying figures, in which: Figure 1 shows a block diagram of a known wireless temperature monitoring system; Figure 2 shows an implementation of the system in Figure 1; Figure 3 shows an example of a sensor probe design; Figure 4 shows the curve more clearly and shows the angle of the curve; Figures 5 and 6 show a detailed example with dimensions; Figure 7 shows a second example of a sensor probe design; and Figure 8 shows a third example of a sensor probe design. Detailed description of the nancnn / rznz / E / YiAi modalities The invention will be described with reference to the Figures. It should be understood that the detailed description and specific examples, although indicating illustrative embodiments of the apparatus, systems, and methods, are intended for illustrative purposes only and are not intended to limit the scope of the invention. These and other features, aspects, and advantages of the apparatus, systems, and methods of the present invention will be better understood from the following description, appended claims, and accompanying figures. It should be understood that the figures are merely schematic and are not drawn to scale. It should also be understood that the same reference numbers are used in all the figures to indicate the same or similar parts. The invention provides a wireless temperature monitoring probe comprising a probe for insertion into an object for which a core temperature is to be measured, and a head at a proximal end of the probe. A sensor induction coil is located in the head and is used for wireless interrogation by an external detector unit to determine the core temperature. An elongated shaft of the probe is not in the plane of the head, for example, so that there is a curve between them. This allows the head to be mounted against the object, saving space, and facilitates correct alignment of the head for proper interrogation by the external detector unit. nancnn / eznz / E / YiAi The invention relates to a wireless temperature probe and, in particular, the use of inductive coupling between the probe and a remote detector unit. By way of example, the type of wireless temperature probe as described in WO 2021 / 05'8390 will first be described. Further details can be found in WO 2021 / 058390, but the invention can also be applied to other types of wireless temperature probes, with other circuit elements dependent on the temperature. Figures 1 and 2 are taken from WO 2021 / 058390. Figure 1 shows a block diagram of a wireless temperature monitoring system 100 that can be used to detect the temperature of an object, such as the core temperature of a food during cooking. As illustrated in Figure 1, the ICO system comprises a sensing probe 110 configured to be inserted into the object. For example, the sensing probe 110 can be inserted into a solid food such as a potato or a piece of meat. The sensing probe 110 comprises a resonant circuit 112 (e.g., an LC circuit), which has a temperature-dependent resonant frequency. In one example, the resonant circuit 112 comprises a capacitor 114, which has a temperature coefficient of its capacitance. However, other temperature-dependent components, such as thermistors, can be used additionally or alternatively. In some embodiments, the temperature coefficients of the components can be present over a predetermined temperature range that corresponds to an expected temperature range of the object. nancnn / eznz / E / YiAi For the example of a temperature-dependent capacitor 114, the capacitor can be a ceramic capacitor and may comprise Y5V material (dielectric). It can be advantageous to use ceramic capacitors comprising Y5V material in system 100, since these types of capacitors typically possess the beneficial property of allowing the resonant circuit 112 to change its properties depending on the surrounding temperature. Such a change in properties allows the temperature of the object to be determined. In more detail, in multilayer ceramic capacitors (MLCCs), the insulating material between the electrodes (also known as the dielectric material) has a significant impact on the resulting capacitance of the capacitor. The properties of the dielectric material vary with temperature. Typically, this is an undesirable parasitic effect in an electronic circuit, but in this case, this particular effect allows us to estimate or determine the capacitor's temperature. Furthermore, when the detection probe 110 is inserted into an object, the capacitor 114 can be protected from overheating by the object. For example, the capacitor 114 can be protected from overheating once the detection probe 110 is inserted into a food item that is placed inside a cooking oven. Although not shown in Figure 1, in some examples the system 100 may comprise one or more additional sensing probes. In such cases, the sensing probe 110 may be referred to as the first sensing probe, and the one or more additional sensing probes may be collectively referred to as the additional sensing probe(s). In these embodiments, each of the one or more additional sensing probes may comprise a respective resonating circuit, and each of the one or more additional sensing probes may be inserted into or placed adjacent to the object. nancnn / eznz / E / YiAi Each of the respective resonant circuits of one or more additional detection probes may have a different temperature-dependent resonant frequency. Furthermore, the temperature-dependent resonant frequency of each of the resonant circuits may be different from the temperature-dependent resonant frequency of the resonant circuit of the first detection probe 110. System 100 further comprises a detector unit 120. The detector unit 120 is configured to interact with the resonant circuit 112 to receive a response associated with a current resonant frequency of the resonant circuit 112. The detector unit 120 in particular comprises a transmitter-receiver coil. The interface between the detection probe 110 and the detector unit 120 comprises a magnetic coupling between the detector unit 120 and the resonant circuit 112. In more detail, a magnetic coupling can be induced between the transmitter-receiver coil of the detector unit 120 and the resonant circuit 112 when the detection probe 110 is placed within the adjacent area of the detector unit 120. Furthermore, the detector unit 120 can be configured to interact with the resonant circuit 112 by controlling the transceiver coil to perform a frequency sweep to excite the resonant circuit 112 in the detection probe 110. This control is implemented by a control unit 130, which functions as the detection circuit. The frequency sweep can be a stepped sweep comprising a plurality of distinct stages, each associated with a different frequency band. The detector unit 120 can be configured to perform each stage in the frequency sweep by transmitting a corresponding radio frequency excitation signal to the resonant circuit 112 of the detection probe 110, and the resonant circuit 112 can be configured to transmit a response signal for each stage in the sweep as a result of the excitation. nancnn / rznz / E / YiAi A corresponding radio frequency stimulating signal may fall within the frequency range of 10 kHz to 1 MHz. Other frequency band ranges and values would be possible depending on the type of circuit used as the resonant circuit. As previously stated, in some examples, system 100 may comprise one or more additional detection probes, each comprising a respective resonant circuit. In these configurations, detector unit 120 can be configured to interface with each of the resonant circuits of the additional detection probe(s) and the first detection probe 110, to receive a response associated with the current resonant frequency of the respective resonant circuit. Therefore, in these configurations, a respective response can be received for each of the resonant circuits associated with the first detection probe and the additional detection probe(s). Although both the 110 detection probe and the 120 detector unit are part of the 100 system, the 110 detection probe and the 120 detector unit are not physically connected. Therefore, the temperature monitoring probe is wireless. It also does not require a power source and is, therefore, a passive circuit, but it can be remotely interrogated by the inductive coupling mentioned above. The detection probe 110 and the control unit 130 can also be physically disconnected. Therefore, during system 100 operation, the detection probe 110 can be inserted into the object wirelessly, which in turn improves the ease of use and flexibility of the entire system 100. Furthermore, since the detection probe 110 can be physically separated from the other system 100 components, it can be easily maintained, replaced, and cleaned. nancnn / eznz / E / YiAi Control unit 130 is configured to determine the current resonant frequency of resonant circuit 112 based on the received response. Control unit 130 is also configured to determine the object's temperature based on the current resonant frequency of the resonant circuit. Within a suitable temperature range, the capacitor is selected such that there is a strong correlation between the temperature and a resonant frequency of resonant circuit 112. Therefore, the object's temperature is determined based on this correlation. Furthermore, since a change in the temperature surrounding capacitor 114 of resonant circuit 112 would result in a change in the resonant frequency of resonant circuit 112, the change in resonant frequency is indicative of a change in the temperature surrounding capacitor 114. Based on preliminary test measurements, depending on the material used in capacitor 114, and / or the type of capacitor 114 used in the resonant circuit 112, system 100 may have an operating temperature range of 10 °C to 100 °C. In some examples, the detection probe 110 p <uede configurarse de manera que cuando la temperatura en el condensador 114 exceda un valor predeterminado (p. ej . , 120 °C), se efectúe un mecanismo de cierre para evitar daños a la sonda de detección 110 y / o al resto de los componentes en el sistema 100. As previously stated, the resonant circuit 112 can be configured to transmit a response for each stage in a stepped sweep. For this purpose, the control unit 130 determines the current resonant frequency of the resonant circuit 112 by processing the response signals from the resonant circuit 112. Specifically, the control unit 130 can determine the current resonant frequency of the resonant circuit 112 based on the corresponding resistances and / or measured frequency values of the frequency-dependent response signals from the resonant circuit 112. nancnn / eznz / E / YiAi When multiple sensing probes are used, the 130 control unit can be configured to determine the temperature of different parts of the object, based on the current resonant frequency of the respective resonant circuit of the multiple sensing probes. The part of the object corresponding to a respective additional sensing probe can be a partial volume immediately adjacent to the location where the respective additional sensing probe is placed. Control unit 130 generally controls the operation of system 100. Control unit 130 may comprise one or more processors, processing units, or multiprocessor modules that are configured or programmed to control system 100. In particular implementations, control unit 130 may comprise a plurality of software and / or hardware modules, each configured to perform, or intended to perform, individual or multiple stages of the method described herein. System 100 may also include a display unit 140 configured to show the determined temperature of the object. Figure 2 shows an implementation of the system in Figure 1. System 100 comprises the detection probe 110, the detector unit, and the control unit 130. The detector unit includes a collection coil 122. The detection probe 110 is not physically connected to the detector unit and the control unit 130. The detection probe 110 has a tip 114 at one end of the detection probe 110 to allow the detection probe 110 to be inserted into an object, e.g., a food such as a piece of meat or a potato. The resonant circuit 112 is shown as an inductor L, which is a sensor inductor coil for wireless interrogation by the external detector unit, and a temperature-dependent capacitor C. Therefore, the LC circuit 112 has a temperature-dependent resonant frequency. The resonant circuit 112 is encapsulated, for example, within the detection probe. The capacitor C has a temperature coefficient within a predetermined range. nancnn / eznz / E / YiAi The detector unit's pickup coil 122 is for inductive coupling to the sensor's inductor coil L and the detection circuit 130 to analyze the response of the resonant circuit 112. Therefore, the detector unit interacts with the resonant circuit 112 to receive a response associated with the current resonant frequency of the resonant circuit 112. The magnetic coupling M between the detector unit 120 and the resonant circuit 112, resulting from the interaction between these two components, is represented by a lightning bolt icon in Figure 2. The resonant circuit 112 of the detection probe 110 is placed within the magnetic field generated by the transmitter-receiver coil of the detector unit 120, thus resulting in the magnetic coupling M between these components. 3.1 degree described' antera or me nte , known, with a condensado r used as the temperature dependent component. This invention relates, in particular, to the design of the sensor probe. To achieve the desired inductive coupling between the sensor's inductor coil L and the detector unit's pickup coil 122, the two coils should preferably be in parallel planes. Furthermore, the sensor's inductor coil L should not be too close to adjacent metal parts. Figure 3 shows an example of a sensor monitor probe design. The temperature monitor probe 300 comprises a spike 302 for insertion into an object (e.g., a food product) for which a core temperature is to be monitored. The spike is elongated with an elongated shaft 305. The main section of the spike to be inserted into the object is, for example, straight, hence with a linear elongated shaft, but it could equally be curved. A direction of the spike and of the elongated shaft can in that case be considered an average of the tangent to the curvature of the spike along the length of the spike and thus a general direction of the spike. The beak has a temperature monitoring region, such as region 304 near the distal tip of the beak. A 306 head is at the proximal end of the beak, opposite the tip, and the 306 head is to remain outside the object. nancnn / eznz / E / YiAi The circuit described above, a temperature-dependent characteristic, is formed within the 300 sensor probe. In a preferred example, capacitor C is formed at the peak 302 in the temperature monitoring region 304, and the sensor inductor coil L is formed at the head 306. In the example shown, the head has a disk shape that corresponds to the shape of the sensor inductor coil. This allows for the formation of a large sensor coil, as it does not need to be inserted into the object. The elongated shaft 305 of the probe is offset from the plane of the sensor's inductor coil in the head 306. Therefore, instead of forming a linear probe with a probe at one end and a head at the other, there is a bend 30EA between the probe 302 and the head 306. This means that the sensor probe occupies less external space once the probe is inserted because the head can be positioned closer to, or more preferably against, the item. This means, in particular, that the probe occupies less space around the object, which may be limited in the case of food inside a cooking chamber of an oven, air fryer, etc. It also means that a distance can be maintained from metal parts, such as the walls of a cooking chamber, by having the head mounted on top of the object. With the sensor head against the object, objects can be compacted more densely, e.g., food inside a cooking chamber. With the sensor head above the object (when the head contains the sensor coil), the coupling between the sensor coil and a collection coil located above it can be improved. Figure 3 shows a 310 reinforcement frame that also limits peak insertion. nancnn / eznz / E / YiAi The 308 curve preferably has an angle of between 90 and 180 degrees (inclusive). A 90-degree curve allows, for example, the nozzle to be inserted downwards, with the head remaining flat on the upper part of the object. This is suitable for thick items, such as a potato. A curve of almost 180 degrees allows the nozzle to be inserted laterally with the head on top. This is suitable for thinner items, such as a steak. The 308 curve between the beak and the head makes it easier to insert the beak while maintaining a desired orientation of the beak and / or the head, in particular to allow correct communication with the emo detector unit. Because the sensor head contains the sensor coil, it is the orientation of the sensor coil that must be chosen. For example, the pickup coil of the detector unit can be mounted on a lid of a cooking device on a horizontal plane (when the cooking device is mounted on a horizontal surface), and then the sensor head is also oriented horizontally. Figure 4 shows the curve angle α. The curve α is, for example, between 90 and 180 degrees as mentioned earlier, for example, between 135 and 180 degrees, for example, between 160 and 180 degrees. The example shown is an almost U-shaped curve so that the p <ico puede insertarse lateralmente (horizontalmente) y el cabezal se asienta por encima del pico también en un plano horizontal.nancnn / eznz / E / YiAi The diameter D of the peak (shown in Figure 3) is, for example, in the range of 2 mm to 6 mm. This provides ample space for any of the circuit components to be formed internally within the peak, particularly the capacitor and / or other temperature-dependent passive components, while preventing excessive damage to the object. A minimum separation S between one end of the tip 302 for insertion into the object and the head 306 is, for example, in the range of 25 mm to 30 mm. When pyro-perforating a U-bend, this separation, for example, corresponds to the depth (in the vertical direction) at which the tip of the tip is inserted into the object. A length L of the 302 piar beak to be inserted into the object is, for example, in the range of 25 mm to 60 πτη. Figures 5 and 6 show a detailed example with dimensions. Figure 5 is a top view of the 306 header, and Figure 6 is a side cross-sectional view through line AA of the Figure 5. In this example, the angle is 172 and the tip is at 8 degrees. The total length of the probe head is 60 mm. The length of the tip is 48 mm, the head has a diameter of 40 mm, and the tip diameter is 6.0 mm and it has a thickness of 6.0 mm. As shown, capacitor C is at the tip of the beak and sensor coil L is in the head. The feed is also displayed as 60. Figure 7 shows a second example of a sensor probe design in which the peak 302 (formed integrally with the curve 308) is rotatably mounted to the head 306 in a coupling 320. This allows adjustment of the orientation of the head and, therefore, the sensor inductor coil, after the peak 302 is inserted into the article. nancnn / eznz / E / YiAi Figure 8 shows a third example of a sensor probe design in which there are two pivot couplings 320a, 320b. The head 306 is rotatably coupled to the bend 308 at a first coupling 320a, and the bend 308 is rotatably coupled to the beak 302 at a second coupling 320b. Therefore, the beak has a separate straight section and a curved section rotatably coupled to each other. This allows adjustment of the head's orientation as well as the bend's orientation. This means that the probe can be shaped to fit the external contour of the article into which the beak is inserted, thus providing a snug fit. The general system 100 can be incorporated into a cooking device or general kitchen appliance for temperature detection. For example, the system can be implemented in an air fryer, a cooking oven, a grill, a stirrer, or a steamer, etc. The detection probe 110 is for insertion into food within the cooking device. The invention can be used when the core temperature of food needs to be measured during the operation of a cooking appliance. However, the 100 system can be implemented in other fields including medicine, wellness, process monitoring, etc., where a passive temperature detection technique can be advantageous. The variations of the described modalities can be understood and implemented by those skilled in the art in the practice of the claimed invention, based on a study of the figures, the description, and the appended claims. In the claims, the words "comprising" do not exclude other elements or steps, and the indefinite article "a" does not exclude a plurality. nancnn / eznz / E / YiAi The mere fact that certain measures are mentioned in mutually dependent claims does not indicate that a combination of these measures cannot be used advantageously. If the term adapted for is used in the claims or description, it is noted that the term adapted for is intended to be equivalent to the term configured for. Any reference in the claims shall not be construed as limiting the scope< / ico>
Claims
1. A wireless temperature monitor probe (300), comprising: a spike (302) for insertion into an object for which a core temperature is to be monitored, the spike having a temperature monitoring region (304); a head (306) at a proximal end of the spike (302), characterized in that the head (306) is to remain outside the object; a circuit (L, C) having a temperature-dependent characteristic, wherein the circuit includes a sensor inductor coil (L) for wireless interrogation by means of an external detector unit to thereby determine the temperature in the temperature monitoring region, wherein the sensor inductor coil is located in the head (306), and wherein the spike has an elongated axis (which is offset) with respect to a plane of the sensor inductor coil.
2. The temperature monitor probe of claim 1, characterized in that there is a curve between the elongated e~e of the peak and the plane of the sensor inductor coil of between 90 and 180 degrees, for example between 135 and 180 degrees, for example between 160 and 180 degrees.
3. The temperature monitor probe of any one of claims 1 to 2, characterized in that a minimum separation (S) between one end of the beak to be inserted into the object and the head is in the range of 25 rrm to 30 rrm.
4. The temperature monitor probe of any one of claims 1 to 3, characterized in that a diameter (D) of the probe is in the range of 2 rrm to 6 rrm.
5. The temperature monitor probe of any one of claims 1 to 4, characterized in that the length (L) of the probe for insertion into the object is in the range of 25 mm to 60 mm. nancnn / eznz / E / YiAi 6. The temperature monitor probe of any one of claims 1 to 5, characterized in that the circuit further comprises one or more components with temperature-dependent characteristics, wherein the components and the sensor inductor coil together form a resonant circuit. The temperature monitor probe of claim 6, characterized in that the one or more components with temperature-dependent characteristics comprise a capacitor with temperature-dependent capacitance and / or a thermistor with temperature-dependent resistance.
8. The temperature monitor probe of claim 7, characterized in that one or more components with temperature-dependent characteristics are at the peak.
9. The temperature monitor probe of any one of claims 1 to 8, characterized in that the beak is rotatably coupled to the head.
10. The temperature monitor probe of claim 9, characterized in that the 302 beak comprises a straight section and a curved section rotatably coupled to each other.
11. The temperature monitor probe of any one of claims 1 to 10, for monitoring the core temperature of a food during cooking.
12. A wireless temperature monitoring system comprising: the temperature monitor probe (300) of any one of claims 1 to 11; and a detector unit (120) comprising a collection coil for inductive coupling to the sensor inductor coil and a detection circuit (130).
13. The system of claim 12, characterized in that the detection circuit comprises a frequency sweep circuit and a processor for determining a resonant frequency of the temperature probe circuit.
14. A cooking apparatus comprising the wireless temperature monitoring system of claim 12 or 13, the cooking apparatus comprising a housing, and characterized in that the pickup coil of the detector unit is integrated into a part of the housing. nancnn / eznz / E / YiAi 15. The cooking apparatus of claim 14, characterized in that the collection coil of the detector unit is integrated into a lid 2 0 of the housing.