Multifunctional multiplex Bluetooth food probe of sensor
By placing the antenna externally and combining the temperature sensor, charging electrode, and wire into a three-in-one structure, the problems of complex internal structure and insufficient waterproof performance of existing food probes are solved, achieving more stable and faster temperature measurement and better waterproof performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-04-07
AI Technical Summary
Existing food probes have complex internal structures and numerous wires, resulting in unstable antenna signals, easy damage, and insufficient waterproof performance.
The antenna is placed externally, and the temperature sensor, charging electrode, and wires are combined into a three-in-one structure to simplify the internal circuitry. An all-metal handle is used to improve stability and waterproofing.
It improves the stability of antenna signals, reduces the number of internal wires, enhances drop resistance and waterproof performance, and makes the sensor respond faster and measure temperature more accurately.
Smart Images
Figure CN224095288U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of temperature probe technology, and in particular to a multi-functional Bluetooth food probe for sensors. Background Technology
[0002] Food temperature probes are used to measure the internal temperature of food, helping cooks accurately monitor the cooking process and prevent food from being undercooked or overcooked, providing a solid foundation for cooking delicious food. Currently, the internal structure of temperature probes is continuously being streamlined and optimized to improve accuracy and stability, and to reduce product manufacturing costs.
[0003] Existing food probes typically have a first sensor at the probe tip to measure the food temperature and a second sensor at the probe tip to measure the ambient temperature of the food. An antenna is housed within the handle. However, the numerous wires (sensor wires, charging electrode wires, and antenna wires) inside the handle interfere with the antenna signal, and the complex internal wiring is prone to damage. Alternatively, some existing technologies place the antenna externally on the handle, but this still requires internal sensor and charging electrode wires (antenna wires), resulting in a larger number of wires, a less streamlined internal structure, and increased susceptibility to damage from drops.
[0004] Therefore, finding a suitable food probe is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention
[0005] Based on this, in order to solve the problem that the connection lines of the antenna, temperature sensor and charging electrode are independent and the stability is not high in the existing technology, this application provides a multi-functional multiplexed Bluetooth food probe with an external antenna for good signal, and the antenna, temperature sensor and charging electrode wires are integrated into one, which has a simple structure, good waterproof performance and long life.
[0006] In one embodiment, a multi-functional Bluetooth food probe is provided, including a first sensor and a first and second wire of the first sensor, a PCB board, a battery, a main control circuit, a switching circuit, a charging module, a second sensor and a third and fourth wire of the second sensor, a communication module, an antenna, a transition connector, a handle, and a probe body tube.
[0007] The first sensor is disposed at the front end of the probe body tube and is used to measure the food temperature; the first sensor is connected to the PCB board and the main control circuit through the first wire and the second wire, and the probe body tube is provided with a first charging electrode;
[0008] The second sensor is located at the end of the handle away from the probe body tube and is used to measure the temperature of the environment in which the food is located; the second sensor is connected to the PCB board and the main control circuit through the third wire and the fourth wire; the handle serves as an antenna or a second charging electrode;
[0009] The switching circuit is used to switch the third and fourth wires of the second sensor to the charging module or the temperature measurement module.
[0010] In one embodiment, a transition connector is also included. The transition connector is non-conductive and is disposed between the probe body tube and the handle. The probe body tube, the transition connector, and the handle are coaxially arranged.
[0011] In one embodiment, one end of the third wire is electrically connected to one end of the fourth wire to form a second sensor, and the other ends of the third and fourth wires are connected to the main control circuit through a PCB board to switch to the temperature measurement module.
[0012] Alternatively; one end of the third wire, one end of the fourth wire, and the handle are electrically connected, and the handle is connected as the second charging electrode to one electrode of the external charging power supply; so as to switch the connection to the charging module.
[0013] The second sensor is electrically connected to the handle.
[0014] The main control circuit is connected to the switching circuit, and the switching circuit is controlled to switch to charging mode or temperature measurement mode.
[0015] In one embodiment, the switching circuit switches to the charging mode, with the handle serving as the second charging electrode of the charging circuit and the probe body tube serving as the first charging electrode of the charging circuit.
[0016] In one embodiment, the switching circuit switches to temperature measurement mode, and the temperature measurement data of the second sensor is transmitted as a sensing signal through the handle, which acts as an antenna.
[0017] In one embodiment, the handle is made of metal, and the handle, the third wire or the fourth wire of the second sensor constitute an antenna.
[0018] In one embodiment, the transition connector is provided with one or two through holes, through which the third wire and the fourth wire pass.
[0019] In one embodiment, the switching circuit includes a circuit switching element, which includes a MOSFET or a Schottky diode.
[0020] In one embodiment, the probe body tube is connected to the transition connector by one of the following methods: interference fit riveting, adhesive bonding, or threaded connection; the transition connector is connected to the handle by interference fit riveting, adhesive bonding, or threaded connection.
[0021] In one embodiment, the transition connector is made of a non-metallic insulating material.
[0022] This application provides a multi-functional Bluetooth food probe with an external antenna for good signal reception. The antenna, temperature sensor, and charging electrode are integrated into a single unit, resulting in a simple structure, good waterproofing, and long lifespan. Specifically, the probe body has an internal cavity. A first sensor is located at the front end of the probe body, used to measure the temperature of the food when inserted into it. The end of the handle furthest from the probe body is used to measure the temperature of the surrounding environment. For example, when grilling meat, the probe body is inserted into the meat, the first sensor acquires the food temperature information, and the second sensor acquires the oven temperature information. Both temperature information are transmitted to the terminal via the handle, which acts as an antenna. Furthermore, only two wires, a third and a fourth wire, are needed in the handle. These wires connect the antenna, the second charging electrode, or the second sensor to the main control circuit to achieve the corresponding functions. When charging is required, the food probe is placed on the charger, aligning the first charging electrode on the probe body and the second charging electrode on the handle. This switches to charging mode and initiates charging. When food temperature needs to be measured, the food probe is placed on the food. In temperature measurement mode, the temperature information acquired by the first and second sensors is transmitted to the terminal via the antenna. The sensor wires, i.e., the third and fourth wires, serve as wires in the charging circuit, making the handle the second electrode in the charging circuit. For example, the second electrode on the handle is the negative electrode, and the first electrode on the probe body tube is the positive electrode. In temperature measurement mode, the sensor wires, i.e., the third and fourth wires, serve as wires for the second sensor and the antenna, realizing the integration of the antenna, sensor, and charging electrode wires in the food probe into one. This reduces the number of wires inside the handle, improves antenna transmission stability, enhances internal structural compactness, strengthens drop resistance, and the handle shell is all-metal, providing better waterproof performance. Furthermore, the second sensor, located at the end of the handle, has a faster sensing speed and more accurate temperature measurement. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the internal structure of a multi-functional Bluetooth food probe for sensors in one embodiment;
[0025] Figure 2 This is a cross-sectional view of a multi-functional Bluetooth food probe sensor in one embodiment;
[0026] Figure 3 This is one of the perspective views of a multi-functional Bluetooth food probe sensor in one embodiment;
[0027] Figure 4 This is a schematic diagram of the switching circuit section in one embodiment;
[0028] Figure 5 This is a second perspective view of a multi-functional Bluetooth food probe sensor in one embodiment.
[0029] Reference numerals: 10, First sensor; 11, First wire; 12, Second wire; 20, Second sensor; 21, Third wire; 22, Fourth wire; 30, Battery; 40, PCB board; 50, Main control circuit; 60, Probe body tube; 61, First charging electrode; 70, Handle; 71, Antenna; 72, Second charging electrode; 80, Transition connector. Detailed Implementation
[0030] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0031] See Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in one embodiment, a multi-functional Bluetooth food probe is provided, including a first sensor 10 and a first wire 11 and a second wire 12 of the first sensor, a PCB board 40, a battery 30, a main control circuit 50, a switching circuit, a charging module, a second sensor 20 and a third wire 21 and a fourth wire 22 of the second sensor, a communication module, an antenna 71, a transition connector 80, a handle 70, and a probe body tube 60.
[0032] The first sensor 10 is disposed at the front end of the probe body tube 60 and is used to measure the food temperature; the first sensor 10 is connected to the PCB board 40 and the main control circuit 50 through the first wire 11 and the second wire 12, and the probe body tube 60 is provided with a first charging electrode 61;
[0033] The second sensor 20 is located at the end of the handle 70 away from the probe body tube 60 and is used to measure the temperature of the environment in which the food is located; the second sensor 20 is connected to the PCB board 40 and the main control circuit 5 through the third wire 21 and the fourth wire 22; the handle 70 serves as an antenna 71 or a second charging electrode 72.
[0034] The switching circuit is used to switch the third wire 21 and the fourth wire 22 of the second sensor 20 to the charging module or the temperature measuring module.
[0035] It should be noted that in Meater's technology, although both the antenna 71 and the charging electrode are located on the handle 70, the antenna 71 and the charging electrode share a common wire, and sensor wires are also required. This results in a large number of wires, making the structure less stable. Furthermore, the second sensor is not connected to the end of the handle, leading to slow temperature response and inaccurate temperature measurement. This embodiment provides a multi-functional Bluetooth food probe with a cavity inside the probe body tube 60. A first sensor 10 is located at the front end of the probe body tube 60, used to measure the temperature of the food when inserted into it. A sensor is located at the end of the handle 70 away from the probe body tube 60, used to measure the temperature of the environment in which the food is located. For example, when cooking or grilling meat, the probe body tube 60 is inserted into the meat. The first sensor 10 acquires the food temperature information, and the second sensor 20 acquires the oven temperature information. Both temperature information are transmitted to the terminal via the handle 70, which acts as the antenna 71. Additionally, only two wires are needed in the handle 70: the third wire 21 and the fourth wire 22. These wires connect the antenna 71, the second charging electrode 72, or the second sensor 20 to the main control circuit, enabling corresponding functions. Specifically, when charging is required, the food probe is placed on the charger, positioning it in the corresponding position so that the first charging electrode 61 on the probe body tube 60 and the second charging electrode 72 on the handle 70 are in their respective positions. This switches to charging mode and begins charging. When food temperature needs to be measured, the food probe is placed on the food. In temperature measurement mode, the temperature information acquired by the first sensor 10 and the second sensor 20 is transmitted to the terminal via the antenna 71.
[0036] Specifically, in charging mode, the sensor wires, namely the third wire 21 and the fourth wire 22, serve as wires in the charging circuit, making the handle 70 the second electrode in the charging circuit. For example, the second electrode on the handle 70 is the negative electrode, and the first electrode on the probe body tube 60 is the positive electrode. In temperature measurement mode, the sensor wires, namely the third wire 21 and the fourth wire 22, serve as wires for the second sensor 20 and the antenna 71, combining the wires of the antenna 71, sensor, and charging electrode in the food probe into one. This reduces the number of wires inside the handle 70, improves the transmission stability of the antenna 71, enhances the compactness of the internal structure, strengthens drop resistance, and, with the handle 70's all-metal shell providing better waterproofing, and the second sensor 20 positioned at the end of the handle 70, has a faster sensing speed and more accurate temperature measurement.
[0037] It is worth noting that the switching circuit in this embodiment controls the switching of the circuit switching elements through the main control circuit to switch to charging mode or temperature sensing mode. The circuit switching elements include, but are not limited to, MOSFETs, Schottky diodes, etc.
[0038] In one embodiment, a transition connector 80 is also included. The transition connector 80 is non-conductive and is disposed between the probe body tube 60 and the handle 70. The probe body tube 60, the transition connector 80, and the handle 70 are coaxially arranged.
[0039] It should be noted that the transition connector 80 is made of ceramic material and is non-conductive, so that the probe body tube 60 serves as the first pole in the charging circuit and the handle 70 serves as the second pole in the charging circuit.
[0040] In one embodiment, one end of the third wire 21 is electrically connected to one end of the fourth wire 22 to form a second sensor 20, and the other ends of the third wire 21 and the fourth wire 22 are connected to the main control circuit 50 through the PCB board 40 to switch to the temperature measurement module.
[0041] Alternatively, one end of the third wire 21, one end of the fourth wire 22, and the handle 70 are electrically connected, and the handle 70 is connected as the second charging electrode 72 to one electrode of the external charging power supply to switch the connection to the charging module.
[0042] It should be noted that the switching circuit switches the connection to the temperature measurement module to form a temperature measurement mode; or the switching circuit switches the connection to the charging module to form a charging mode. Furthermore, the second sensor 20 is located at the end of the handle 70, providing rapid sensing.
[0043] In one embodiment, the switching circuit switches to the charging mode, with the handle 70 serving as the second charging electrode 61 of the charging circuit and the probe body tube 60 serving as the first charging electrode 72 of the charging circuit.
[0044] It should be noted that the first charging electrode 61 is the positive electrode, and the second charging electrode 72 is the negative electrode.
[0045] In one embodiment, the switching circuit switches to temperature measurement mode, and the temperature measurement data of the second sensor 20 is transmitted as a sensing signal through the handle 70, which serves as an antenna 71.
[0046] It should be noted that the second sensor 20 acquires the temperature data of the environment in which the food is located, and the first sensor 10 acquires the temperature data of the food. Both temperature data are transmitted as sensing signals through the handle 70, which serves as the antenna 71.
[0047] In one embodiment, the handle 70 is made of metal, and the handle 70, the third wire 21 or the fourth wire 22 of the second sensor 20 constitute an antenna 71.
[0048] It is worth noting that, see Figure 5 As shown, the transition connector 80 and the handle 70 can together serve as the handle body. The proportion of the transition connector 80 in the handle body can be set to be larger than that of the metal handle 70. In this case, the small-sized metal handle 70 mainly serves as the second charging electrode 72. At this time, the main part to hold is the transition connector 80. The third wire 21 or the fourth wire 22 of the second sensor 20 serves as part of the antenna 71.
[0049] It should be noted that the handle 70 body has a cavity facing the probe body tube 60, and the end of the handle 70 away from the probe body tube 60 is closed. The handle 70 body is integrally molded, which has better waterproof performance and better temperature resistance, and can measure higher temperatures, up to 800℃.
[0050] In one embodiment, the transition connector 80 is provided with one or two through holes, through which the third conductor and the fourth conductor 22 pass.
[0051] It should be noted that the preferred transition connector 80 is provided with two through holes, through which the third wire 21 and the fourth wire 22 pass respectively, so that the third wire and the fourth wire 22 pass through the two through holes from the handle 70 and connect to the PCB board 40 and the main control circuit 50 provided in the probe body tube 60. Alternatively, the third wire 21 and the fourth wire 22 pass through the through hole together.
[0052] In one embodiment, the switching circuit includes a circuit switching element, which includes a MOSFET or a Schottky diode.
[0053] It should be noted that the charging mode or temperature measurement mode is automatically switched by the MOSFET. For example, in the charging mode, when the food probe is placed in the charger, the main control circuit detects the connection to the charger, and the active circuit turns on the MOSFET after detecting the charging signal, thus activating the charging circuit and de-energizing the temperature measurement communication circuit. In the temperature measurement mode, when the food probe is removed from the charger, the charging MOSFET is disconnected, the power supply is switched to the battery, and the first sensor 10, the second sensor 20, and the antenna 71 are activated.
[0054] For example, the switching state of the MOSFET is controlled by outputting high and low levels through the GPIO of the main control circuit. Specifically, in charging mode, GPIO_A = low level, GPIO_B = high level → MOSFET1 is off, MOSFET2 is on; in temperature measurement mode, GPIO_A = high level, GPIO_B = low level → MOSFET1 is on, MOSFET2 is off.
[0055] For example, a voltage comparator circuit can also be used to detect voltage changes when the charger is plugged in, triggering the main control circuit to switch to charging mode. For instance, when the voltage threshold is greater than a preset threshold, it is determined that the charger is plugged in.
[0056] In one embodiment, the probe body tube 60 and the transition connector 80 are connected by one of the following methods: interference fit riveting, adhesive bonding, or threaded connection. The transition connector 60 and the handle 70 are connected by one of the following methods: interference fit riveting, adhesive bonding, or threaded connection. Interference fit riveting is preferred.
[0057] It should be noted that interference fit riveting is preferred. The second sensor 20 is welded to the handle 70. The third and fourth wires 22 of the second sensor 20 pass through the transition connector 80, which is made of ceramic material. The handle 70 is filled with ceramic glue. The handle 70 and the transition connector 80 are riveted together. The first wire 11 and the second wire 12 are welded to the PCB board 40. The third wire 21 and the fourth wire 22 are welded to the PCB board 40. The battery is soldered on. The assembled components are placed into the probe body tube 60, filled with waterproof glue, and then the probe body tube 60 is riveted to the transition connector 80.
[0058] In one embodiment, the transition connector 80 is a non-metallic insulating material, preferably a structural ceramic material.
[0059] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.
[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.
[0061] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.
[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A multi-functional Bluetooth food probe for sensors, characterized in that, Includes a first sensor and its first and second wires, a PCB board, a battery, a main control circuit, a switching circuit, a charging module, a second sensor and its third and fourth wires, a communication module, an antenna, a transition connector, a handle, and a probe body tube; The first sensor is disposed at the front end of the probe body tube and is used to measure the food temperature; the first sensor is connected to the PCB board and the main control circuit through the first wire and the second wire, and the probe body tube is provided with a first charging electrode; The second sensor is located at the end of the handle away from the probe body tube and is used to measure the temperature of the environment in which the food is located; the second sensor is connected to the PCB board and the main control circuit through the third wire and the fourth wire; the handle serves as an antenna or a second charging electrode; The switching circuit is used to switch the third and fourth wires of the second sensor to the charging module or the temperature measurement module.
2. The sensor multi-functional multiplexed Bluetooth food probe according to claim 1, characterized in that, It also includes a transition connector, which is non-conductive and is disposed between the probe body tube and the handle. The probe body tube, the transition connector, and the handle are coaxially arranged.
3. The sensor multi-functional multiplexed Bluetooth food probe according to claim 1, characterized in that, One end of the third wire is electrically connected to one end of the fourth wire to form a second sensor, and the other ends of the third and fourth wires are connected to the main control circuit through a PCB board to switch to the temperature measurement module. Alternatively; one end of the third wire, one end of the fourth wire, and the handle are electrically connected, and the handle is connected as the second charging electrode to one electrode of the external charging power supply; so as to switch the connection to the charging module.
4. The sensor multifunctional multiplexed Bluetooth food probe according to claim 3, characterized in that, The switching circuit switches to charging mode, with the handle serving as the second charging electrode of the charging circuit and the probe body tube serving as the first charging electrode of the charging circuit.
5. A multi-functional Bluetooth food probe for sensors according to claim 3, characterized in that, The switching circuit switches to temperature measurement mode, and the temperature measurement data of the second sensor is transmitted as a sensing signal through the handle, which acts as an antenna.
6. The sensor multi-functional multiplexed Bluetooth food probe according to claim 1, characterized in that, The handle is made of metal, and the handle and the third or fourth wire of the second sensor constitute an antenna.
7. A multi-functional Bluetooth food probe for sensors according to claim 2, characterized in that, The transition connector is provided with one or two through holes, and the third wire and the fourth wire pass through the through holes.
8. A multi-functional Bluetooth food probe for sensors according to claim 1, characterized in that, The switching circuit includes a circuit switching element, which may include a MOSFET or a Schottky diode.
9. A multi-functional Bluetooth food probe for sensors according to claim 2, characterized in that, The probe body tube is connected to the transition connector by one of the following methods: interference fit riveting, adhesive bonding, or threaded connection. The transition connector is connected to the handle by interference fit riveting, adhesive bonding, or threaded connection.
10. A multi-functional Bluetooth food probe for sensors according to claim 9, characterized in that, The transition connector is made of non-metallic insulating material.