CN217304207U

CN217304207U - Multi-purpose wireless passive temperature probe of monitoring

Info

Publication number: CN217304207U
Application number: CN202220197489.6U
Authority: CN
Inventors: 曾招停; 王俊; 何锦坤; 有瑞奇; 罗敏辉; 游智勇; 薛开金
Original assignee: Shenzhen Tepusheng Technology Co ltd
Current assignee: Shenzhen Tepusheng Technology Co ltd
Priority date: 2022-01-22
Filing date: 2022-01-22
Publication date: 2022-08-26
Anticipated expiration: 2032-01-22

Abstract

The utility model discloses a wireless passive temperature probe of multi-purpose monitoring, the wireless passive temperature probe of multi-purpose monitoring includes: the shell, set up in PCB board in the shell, the RFID chip, with the RFID chip separation sets up be used for monitoring food temperature the first sensor, be used for monitoring the interior temperature of oven, wherein, the RFID chip set up in on the PCB board, first sensor with the PCB board set up in the front end of shell, the second sensor set up in the tail end of shell, first sensor, second sensor respectively with RFID chip signal connection. Compared with the prior art, the utility model discloses but the temperature in simultaneous measurement food and the oven to temperature measurement scope and precision have been improved.

Description

Multi-purpose wireless passive temperature probe of monitoring

Technical Field

The utility model discloses temperature probe technical field, in particular to wireless passive temperature probe of multi-purpose monitoring.

Background

When food is baked, a temperature probe is usually inserted into the food, then the food and the probe are put into an oven together, the temperature of the food is monitored by the probe, and the food is prevented from being burnt, the current probe generally has two types, one type is a type with a battery, as shown in figure 1, the battery 1 is placed at the front end of a temperature sensing probe, a PCB 2 is arranged behind the battery 1, and a single temperature sensor 3 is arranged at a temperature sensing head.

The other is a temperature sensor and RFID integrated temperature probe, as shown in fig. 2, the RFID temperature sensing chip 4 includes a radio frequency circuit, a baseband module, a built-in temperature sensor, a voltage stabilizing circuit, and a memory, and the temperature sensor and RFID integrated temperature probe shown in fig. 2 further includes an antenna 5 and a metal tip tube 6.

For the temperature probe with the built-in battery, the battery has low temperature resistance, and if the temperature probe is subjected to high temperature or high temperature and low temperature alternation, the battery has leakage or explosion risks; in addition, because the PCB plate part is a non-high temperature resistant structure, the depth of the probe inserted into the object to be tested is generally 60mm, namely the front end 60mm of the probe is a low temperature region arranged in food, and the rest part is a high temperature region exposed outside the food in the furnace, in other words, the PCB plate is a high temperature region inside the food outside the furnace, and the scheme of the built-in battery limits that one temperature measuring range of the temperature probe of the type is narrow, and is generally only-20 to +125 ℃.

For the sensor and RFID integrated temperature probe, the customization is serious, the cost is high, the sensor is integrated on a PCB, and the circuit processing adopts the simplest mode, so that the processing precision is limited, the temperature measurement precision is low, generally plus or minus 1-2 degrees, in addition, the sensor cannot be directly contacted with a probe metal shell, and the conditions of low heat conductivity and inaccurate temperature measurement exist.

In the use process of an actual user, it is difficult to ensure that the head of the probe is just positioned in food when the probe is inserted. When the force is slightly applied, the head part can be exposed or nearly exposed, and the temperature of the probe position is actually close to the temperature in the furnace and is up to 300 and 400 ℃. The RFID mode with the temperature sensor has great risk, namely the RFID chip with the temperature sensor is directly exposed or approximately exposed to the environment of 400 ℃ up to 300-. The user experience is poor.

In order to design the RFID chip in the food area, the RFID chip-containing PCB portion must be designed to be as short and wide as possible, and the diameter of the probe must be large. The front end is only sharp and can not smoothly penetrate into the body. The user experience is also poor and the above-mentioned over-exertion problem may result.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a temperature measurement scope is wider, the temperature measurement is more accurate, the convenient multi-purpose wireless passive temperature probe of monitoring of both detectable food temperature but also temperature in the detection stove of taking.

In order to achieve the above object, the utility model provides a wireless passive temperature probe of multi-purpose monitoring, the wireless passive temperature probe of multi-purpose monitoring includes: the shell, set up in PCB board in the shell, the RFID chip, with the first sensor that is used for monitoring food temperature that the RFID chip separation set up, the second sensor that is used for monitoring the interior temperature of oven, wherein, the RFID chip set up in on the PCB board, first sensor with the PCB board set up in the front end of shell, the second sensor set up in the tail end of shell, first sensor, second sensor respectively with RFID chip signal connection.

The utility model discloses a further technical scheme is, multi-purpose wireless passive temperature probe of monitoring still includes MCU and antenna, wherein, MCU set up in on the PCB board, RFID chip, first sensor, second sensor, antenna respectively with MCU connects, the antenna is the spring winding form.

The utility model discloses a further technical scheme is, be provided with heat conduction silicone grease on first sensor and the second sensor.

The utility model discloses a further technical scheme is, the wireless passive temperature probe of multi-purpose monitoring still including set up in resistance-capacitance piece and analog-to-digital converter on the PCB board, resistance-capacitance piece, analog-to-digital converter respectively with MCU connects.

The utility model discloses a further technical scheme is, the periphery of shell is in being close to the one end of antenna is provided with non-metallic handle.

The utility model discloses a further technical scheme is, being close to of shell the external diameter of the one end of first sensor is by going to back grow step by step.

The utility model discloses wireless passive temperature probe of multi-purpose monitoring's beneficial effect is: the utility model discloses an above-mentioned technical scheme, include: the shell, set up in PCB board in the shell, the RFID chip, with the RFID chip separation sets up be used for monitoring food temperature the first sensor, be used for monitoring the interior temperature of oven the second sensor, wherein, the RFID chip set up in on the PCB board, first sensor with the PCB board set up in the front end of shell, the second sensor set up in the tail end of shell, first sensor, second sensor respectively with RFID chip signal connection can the simultaneous measurement food and the interior temperature of oven to temperature measurement scope and precision have been improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art probe with a battery;

FIG. 2 is a schematic diagram of a prior art temperature sensor and RFID integrated temperature probe;

fig. 3 is a schematic view of the overall structure of the preferred embodiment of the multipurpose wireless and passive temperature monitoring probe of the present invention.

The reference numbers illustrate:

a housing 10; a PCB board 20; an RFID chip 30; a first sensor 40; a second sensor 50; an MCU 60; an antenna 70; a resistive-capacitive element 80; a handle 90.

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 3, the present invention provides a wireless passive temperature probe for monitoring multiple purposes, which comprises a housing 10, a PCB 20, a RFID chip 30, a first sensor 40 and a second sensor 50.

The PCB 20, the RFID chip 30, the first sensor 40 and the second sensor 50 are disposed in the housing 10, and the first sensor 40 and the second sensor 50 are disposed separately from the RFID chip 30.

Specifically, the RFID chip 30 is disposed on the PCB 20, the first sensor 40 and the PCB 20 are disposed at the front end of the housing 10, the second sensor 50 is disposed at the rear end of the housing 10, and the first sensor 40 and the second sensor 50 are respectively in signal connection with the RFID chip 30.

The first sensor 40 is used to monitor the temperature of the food, and the second sensor 50 is used to monitor the temperature inside the oven.

It is worth emphasizing that in the prior art, the first sensor 40 for monitoring the temperature of the food and the RFID chip 30 are generally integrated together, and since the first sensor 40 cannot directly contact with the probe metal shell 10, there are situations of low thermal conductivity and inaccurate temperature measurement, or, when the temperature of the food is high, the RFID chip 30 may be damaged, which reduces the service life. In the embodiment, the first sensor 40 and the RFID chip 30 are separately arranged, so that the first sensor 40 is convenient to contact with food, and the RFID chip 30 is prevented from being affected by high temperature, the temperature measurement range and precision are further improved, the temperature measurement is more accurate and sensitive, the temperature measurement range of a product can reach-50 to +200 ℃, and in addition, the first sensor 40, the second sensor 50 and the RFID chip 30 are separately arranged, so that the production is more convenient, and the production cost is lower.

In addition, in the embodiment, the first sensor 40 is used for measuring the temperature of the food, and the second sensor 50 for measuring the temperature in the oven is arranged at the tail end of the housing 10, so that the dual-sensor design is adopted, and the functionality of the multi-purpose monitoring wireless passive temperature probe is enriched.

Further, in this embodiment, the multi-purpose wireless and passive temperature monitoring probe further includes a MCU60 and an antenna 70, wherein the MCU60 is disposed on the PCB 20, the RFID chip 30, the first sensor 40, the second sensor 50, and the antenna 70 are respectively connected to the MCU60, and the antenna 70 is in a spring-wound shape.

It should be noted that, in the prior art, the antenna 70 is usually disposed on a carrier such as the PCB 20 in a printing manner, and the temperature resistance of the antenna 70 is not good due to the influence of the carrier, but the antenna 70 is disposed in a spring winding manner in this embodiment, so that the influence of the carrier can be avoided, the temperature resistance can be improved, and higher temperature can be resisted.

Further, in this embodiment, the first sensor 40 and the second sensor 50 are provided with a high thermal conductivity and thermal grease. In this embodiment, the first sensor 40 and the second sensor 50 are added with high thermal conductivity heat-conducting silicone grease, so that the silicone grease can contact with food or an oven as much as possible, and the temperature measurement accuracy is further improved.

Further, in this embodiment, the multi-purpose wireless and passive temperature monitoring probe further includes a capacitance element 80 and an analog-to-digital converter disposed on the PCB 20, and the capacitance element 80 and the analog-to-digital converter are respectively connected to the MCU 60.

Furthermore, in the present embodiment, a non-metal handle 90 is disposed at an end of the outer periphery of the housing 10 close to the antenna 70, and preferably, a ceramic handle 90 is selected in the present embodiment.

The ceramic handle 90 can protect the antenna 70 from being interfered by the housing 10, so that the antenna has better coupling capability, and the ceramic radio frequency interference is small, thereby effectively preventing the radio frequency from being isolated and influenced by organisms.

Further, in the present embodiment, the outer diameter of the end of the housing 10 close to the first sensor 40 is gradually increased from the front to the back. In the embodiment, the end of the housing 10 close to the first sensor 40 is designed to be variable-diameter, so that the housing can be inserted into food conveniently.

In addition, it is worth proposing that, compared with the prior art, the present embodiment cancels a built-in battery, uses the RFID chip 30, and migrates the PCB 20, so that the area where the PCB 20 is located is a low temperature area, and the PCB 20 can be prevented from being damaged due to high temperature, thereby improving the service life thereof, and improving the temperature measurement accuracy thereof. When the multifunctional temperature monitoring device is used specifically, the multifunctional monitoring wireless passive temperature probes of the embodiment can be inserted into multiple positions on food, and the temperature of the probes can be read by one reader at the same time, so that the multipoint temperature of the food can be monitored wirelessly at the same time.

The utility model discloses wireless passive temperature probe of multi-purpose monitoring's beneficial effect is: the utility model discloses an above-mentioned technical scheme, include: the shell, set up in PCB board in the shell, the RFID chip, with the first sensor that is used for monitoring food temperature that the RFID chip separation set up, the second sensor that is used for monitoring the interior temperature of oven, wherein, the RFID chip set up in on the PCB board, first sensor with the PCB board set up in the front end of shell, the second sensor set up in the tail end of shell, first sensor, second sensor respectively with RFID chip signal connection can measure the temperature in food and the oven simultaneously to temperature measurement range and precision have been improved.

The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. A multi-purpose monitoring wireless passive temperature probe, characterized in that it comprises: the shell, set up in PCB board in the shell, the RFID chip, with the RFID chip separation sets up be used for monitoring food temperature the first sensor, be used for monitoring the interior temperature of oven, wherein, the RFID chip set up in on the PCB board, first sensor with the PCB board set up in the front end of shell, the second sensor set up in the tail end of shell, first sensor, second sensor respectively with RFID chip signal connection.

2. The multipurpose monitoring wireless passive temperature probe according to claim 1, further comprising an MCU and an antenna, wherein the MCU is disposed on the PCB, the RFID chip, the first sensor, the second sensor and the antenna are respectively connected to the MCU, and the antenna is in a spring-wound shape.

3. The multi-purpose monitoring wireless passive temperature probe of claim 2, wherein the first sensor and the second sensor are provided with thermally conductive silicone grease.

4. The multipurpose monitoring wireless passive temperature probe according to claim 2, further comprising a capacitance-resistance element and an analog-digital converter arranged on the PCB, wherein the capacitance-resistance element and the analog-digital converter are respectively connected with the MCU.

5. The multi-purpose monitoring wireless passive temperature probe of claim 2, wherein a non-metallic handle is provided around the outer perimeter of the housing at an end proximate to the antenna.

6. The multipurpose monitoring wireless passive temperature probe according to any one of claims 1 to 5, wherein the outer diameter of the end of the housing near the first sensor is gradually increased from the beginning to the end.