CN213516044U - Miniaturized passive temperature sensor - Google Patents
Miniaturized passive temperature sensor Download PDFInfo
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- CN213516044U CN213516044U CN202023016020.8U CN202023016020U CN213516044U CN 213516044 U CN213516044 U CN 213516044U CN 202023016020 U CN202023016020 U CN 202023016020U CN 213516044 U CN213516044 U CN 213516044U
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Abstract
The utility model relates to a miniaturized passive temperature sensor, including metal casing, radio frequency main control module and with the temperature perception module, the circuit of getting and the energy storage module that the radio frequency main control module electricity is connected, be fixed with the circuit board in the metal casing, radio frequency main control module, temperature perception module, the circuit of getting and energy storage module integration are on this circuit board, radio frequency main control module is connected with the antenna, it has the electricity generation mechanism to get the circuit connection, the electricity generation mechanism includes induction coil and passes the induction silicon steel sheet in induction coil space; the antenna extends out of the metal shell and is mounted on one side of the circuit board, the temperature sensing module comprises a temperature sensing probe, and the temperature sensing probe is in contact with the shielding metal shell through heat-conducting rapid gel; the utility model discloses a miniaturized design can satisfy the installation demand under the on-the-spot most of the circumstances at arbitrary surface mounting, and the comprehensive cost is lower.
Description
Technical Field
The utility model belongs to the technical field of temperature sensor, concretely relates to miniaturized passive temperature sensor.
Background
The wiring of the power equipment on the industrial site runs for a long time, and the resistance is increased and the temperature is abnormal due to easy aging and loosening, so that safety accidents are caused. The passive temperature sensor can provide full-period temperature monitoring, the traditional temperature sensor acquisition equipment often uses a large induction coil to acquire induction current, the equipment size is large, and the installation requirements of space-limited occasions such as a wiring board and the like cannot be met. In the prior art, a separate installation method is usually adopted for the product, so that the problem of large equipment size is solved: the sensor probe is attached to the surface of a measured object and is connected to the main processing module through a cable, so that the installation is very complex, and the maintenance difficulty is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough and provide a miniaturized passive temperature sensor of prior art.
The technical scheme of the utility model as follows:
a miniaturized passive temperature sensor comprises a metal shell, a radio frequency main control module, a temperature sensing module, a power taking circuit and an energy storage module, wherein the temperature sensing module, the power taking circuit and the energy storage module are electrically connected with the radio frequency main control module; the antenna extends out of the metal shell and is installed on one side of the circuit board, the temperature sensing module comprises a temperature sensing probe, and the temperature sensing probe is in contact with the shielding metal shell through heat conduction quick-acting gel.
Further, a QFN32 packaged CC13XX chip is adopted in the radio frequency main control module.
Furthermore, the power taking circuit comprises an ME6214C33M5G chip and an ME2803A33M3G voltage detector.
Further, the energy storage module comprises a first energy module and a second energy module, the first energy module comprises a capacitor C1, a capacitor C2 and a capacitor C3, the capacitor C1, the capacitor C2 and the capacitor C3 are connected in parallel and then are respectively grounded, and non-grounded terminals of the capacitor C1, the capacitor C2 and the capacitor C3 are respectively connected with a 11 th pin, a 19 th pin and a 27 th pin of the CC13XX chip; the second power module comprises an inductor L1, a capacitor C4, a capacitor C5 and a capacitor C6, the capacitor C4, the capacitor C5 and the capacitor C6 are connected in parallel and then are grounded respectively, a non-grounded end of the capacitor C4 is connected to the 18 th pin of the CC13XX chip through the inductor L1, and a common connection end of the capacitor C4, the capacitor C5 and the capacitor C6 is connected to the 28 th pin and the 32 th pin of the CC13XX chip.
Further, the temperature sensing module adopts a temperature sensor with the model of TMP112 AIRLR.
Furthermore, the radio frequency main control module, the temperature sensing module, the power taking circuit and the energy storage module are located on the front side of the circuit board, and the generating mechanism is arranged on the back side of the circuit board.
Furthermore, the antenna adopts a spiral copper tube coil.
The utility model is arranged at the cable joint, and the surface of the object to be measured is tightly combined with the metal shell of the utility model; when the current passes through the cable to be measured, the induction coil rectifies the acquired current through the power taking circuit and stores the rectified current into the energy storage module, when the current required by one-time emission is met (completed through a voltage detector of the power taking circuit), the radio frequency main control module starts to start, data of the temperature sensing module are acquired and emitted through wireless radio frequency, and a concentrator nearby receives the data, so that one-time temperature data acquisition is completed.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model adopts the miniaturization design, can be installed on any surface, meets the installation requirements under most conditions on site, and has lower comprehensive cost; through an extremely low power consumption technology and a structural layout, a miniaturized induction coil and a power taking circuit are designed, so that the size of a sensor product is smaller than 22x26x9.5mm, and the sensor can be installed in a narrower space range; the antenna, the circuit board, the induction coil and the temperature sensor probe are reasonably arranged, so that the structure size is smaller, and the installation and integration requirements of various shells can be met; the sensor probe is contacted with the external shielding metal shell through the heat-conducting quick-setting colloid, so that a more quick temperature sensing function is completed, and the reaction is more sensitive.
Drawings
Fig. 1 is a circuit block diagram of an embodiment of the present invention.
Fig. 2 is a schematic circuit diagram of a radio frequency master control module according to an embodiment of the present invention.
Fig. 3 is a schematic circuit diagram of a power-taking circuit according to an embodiment of the present invention.
Fig. 4 is a schematic circuit diagram of an energy storage module according to an embodiment of the present invention.
Fig. 5 is a schematic circuit diagram of the temperature sensing module according to the embodiment of the present invention.
Figure 6 is a schematic top view of an embodiment of the present invention.
Figure 7 is a front view schematic of an embodiment of the invention.
In the figure, a metal shell (1), a circuit board (2), an electricity generating mechanism (3), an antenna (4) and a temperature sensing probe (5).
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 work belong to the protection scope of the present invention.
As shown in fig. 1 to 5, a miniaturized passive temperature sensor comprises a metal shell 1, a radio frequency main control module, a temperature sensing module electrically connected with the radio frequency main control module, a power taking circuit and an energy storage module, wherein a circuit board 2 is fixed in the metal shell 1, the radio frequency main control module, the temperature sensing module, the power taking circuit and the energy storage module are integrated on the circuit board 2, the radio frequency main control module is connected with an antenna 4, the power taking circuit is connected with a power generation mechanism 3, the power generation mechanism 3 comprises an induction coil and an induction silicon steel sheet penetrating through a gap of the induction coil, the induction coil is wound on a coil frame, and a conventional thin copper wire can be adopted; antenna 4 installs in one side of circuit board 2 and stretches out metal casing 1 from metal casing 1's side, and temperature sensing module includes temperature probe 5, and temperature probe 5 passes through the contact of heat conduction quick gel and shielding metal casing, realizes the sensitive perception of temperature.
The size of the sensor product of the embodiment is smaller than 22x26x9.5mm, the sensor product can be installed on any surface, the installation requirements under most situations on site are met, and the comprehensive cost is lower; when the cable is installed, a bulge or a groove can be arranged on the metal shell 1 according to actual needs so as to facilitate the fixation of the utility model, the utility model is installed at a cable joint, and the surface of the object to be measured is tightly combined with the metal shell 1 of the utility model; when the current passes through the cable to be measured, the induction coil obtains the current and stores the current into the energy storage module after the current is rectified by the power taking circuit, when the current required by one-time emission is met, the radio frequency main control module starts to collect the data of the temperature sensing module and emits the data through the wireless radio frequency, and the concentrator nearby receives the data, so that the one-time temperature data collection is completed.
Furthermore, a QFN32 packaged CC13XX chip is adopted in the radio frequency master control module, and the CC13XX chip has ultra-low power consumption, so that the electric energy requirement required by one-time emission is reduced.
Furthermore, the power taking circuit comprises an ME6214C33M5G chip and an ME2803A33M3G voltage detector, and when the voltage stored in the energy storage module is detected by the voltage detector to determine whether the voltage meets the current requirement for one-time emission, the radio frequency main control module starts to start if the current requirement is met, and data of the temperature sensing module is collected.
Further, the energy storage module comprises a first energy module and a second energy module, the first energy module comprises a capacitor C1, a capacitor C2 and a capacitor C3, the capacitor C1, the capacitor C2 and the capacitor C3 are connected in parallel and then are respectively grounded, and non-grounded ends of the capacitor C1, the capacitor C2 and the capacitor C3 are respectively connected with a 11 th pin, a 19 th pin and a 27 th pin of the CC13XX chip; the second power module comprises an inductor L1, a capacitor C4, a capacitor C5 and a capacitor C6, the capacitor C4, the capacitor C5 and the capacitor C6 are connected in parallel and then are grounded respectively, the non-grounded end of the capacitor C4 is connected to the 18 th pin of the CC13XX chip through the inductor L1, and the common-connection ends of the capacitor C4, the capacitor C5 and the capacitor C6 are connected to the 28 th pin and the 32 th pin of the CC13XX chip.
Furthermore, the temperature sensing module adopts a temperature sensor with the model of TMP112 AIRLR, and is a substitute product of a high-precision low-power-consumption NTC/PTC thermistor.
Furthermore, the radio frequency main control module, the temperature sensing module, the power taking circuit and the energy storage module are positioned on the front side of the circuit board 2, and the generating mechanism 3 is arranged on the back side of the circuit board 2, so that the length or the width of the sensor is reduced.
Further, antenna 4 adopts spiral copper pipe coil, has compressed the volume, is convenient for the utility model discloses it is miniaturized.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. A miniaturized passive temperature sensor characterized in that: the temperature sensing module, the power taking circuit and the energy storage module are electrically connected with the radio frequency main control module, a circuit board is fixed in the metal shell, the radio frequency main control module, the temperature sensing module, the power taking circuit and the energy storage module are integrated on the circuit board, the radio frequency main control module is connected with an antenna, the power taking circuit is connected with a power generation mechanism, and the power generation mechanism comprises an induction coil and an induction silicon steel sheet penetrating through a gap of the induction coil; the antenna extends out of the metal shell and is installed on one side of the circuit board, the temperature sensing module comprises a temperature sensing probe, and the temperature sensing probe is in contact with the shielding metal shell through heat conduction quick-acting gel.
2. The miniaturized passive temperature sensor of claim 1, wherein: the radio frequency main control module is internally provided with a CC13XX chip packaged by QFN 32.
3. The miniaturized passive temperature sensor of claim 1, wherein: the power taking circuit internally comprises an ME6214C33M5G chip and an ME2803A33M3G voltage detector.
4. The miniaturized passive temperature sensor of claim 2, wherein: the energy storage module comprises a first energy module and a second energy module, the first energy module comprises a capacitor C1, a capacitor C2 and a capacitor C3, the capacitor C1, the capacitor C2 and the capacitor C3 are connected in parallel and then are respectively grounded, and non-grounded ends of the capacitor C1, the capacitor C2 and the capacitor C3 are respectively connected with a 11 th pin, a 19 th pin and a 27 th pin of a CC13XX chip; the second power module comprises an inductor L1, a capacitor C4, a capacitor C5 and a capacitor C6, the capacitor C4, the capacitor C5 and the capacitor C6 are connected in parallel and then are grounded respectively, a non-grounded end of the capacitor C4 is connected to the 18 th pin of the CC13XX chip through the inductor L1, and a common connection end of the capacitor C4, the capacitor C5 and the capacitor C6 is connected to the 28 th pin and the 32 th pin of the CC13XX chip.
5. The miniaturized passive temperature sensor of claim 2, wherein: the temperature sensing module adopts a temperature sensor with the model of TMP112 AIRLR.
6. The miniaturized passive temperature sensor of claim 1, wherein: the radio frequency master control module, the temperature sensing module, the power taking circuit and the energy storage module are located on the front side of the circuit board, and the power generation mechanism is arranged on the back side of the circuit board.
7. The miniaturized passive temperature sensor of claim 1, wherein: the antenna adopts a spiral copper tube coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023016020.8U CN213516044U (en) | 2020-12-10 | 2020-12-10 | Miniaturized passive temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023016020.8U CN213516044U (en) | 2020-12-10 | 2020-12-10 | Miniaturized passive temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213516044U true CN213516044U (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023016020.8U Active CN213516044U (en) | 2020-12-10 | 2020-12-10 | Miniaturized passive temperature sensor |
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|---|---|
| CN (1) | CN213516044U (en) |
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2020
- 2020-12-10 CN CN202023016020.8U patent/CN213516044U/en active Active
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