Wireless transmission temperature sensor

Abstract

A wireless transmission temperature sensor comprises a signal transmission module, a temperature acquisition module and a signal receiving module, the signal transmission module is composed of a wireless transmitter, a circuit board is arranged in an inner cavity of the wireless transmitter, a battery and a male socket are arranged on the circuit board, the male socket extends to the outside, and the temperature acquisition module is connected with the signal receiving module. The temperature acquisition module comprises a protection tube; according to the utility model, through the wireless transmitter and the wireless temperature signal receiver, wireless transmission of the temperature of the fluid to be detected can be realized, the real-time performance of temperature measurement data is enhanced, the temperature can be detected more closely, and temperature information can be fed back in time; meanwhile, temperature signal transmission under the condition that the whole equipment is sealed is achieved, the temperature is accurately measured in real time under the condition that the equipment operates in a sealed mode, long-term operation of the equipment can be achieved, the sealing problem during wired transmission is solved, and inconvenience brought by overhaul is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sensors, and in particular to a wireless transmission temperature sensor. Background Technology

[0002] In temperature measurement, there are several methods that use wired cables, methods that utilize the temperature resistance characteristics or thermoelectric potential of thermistors or thermocouples, or methods that use infrared radiation to measure temperature, or methods that utilize the physical characteristics of piezoelectric elements or elastic surface wave elements, etc.

[0003] Currently, in the use of certain sealed equipment, the configuration of the wired cable for outputting from the measuring unit to the outside is constrained by the chamber or auxiliary devices, etc. At the same time, the limited transmission will affect the sealing performance of the equipment, thus affecting its use. Utility Model Content

[0004] The purpose of this invention is to provide a wireless transmission temperature sensor to solve the problems mentioned in the background art.

[0005] The technical problem solved by this utility model is achieved through the following technical solution:

[0006] A wireless temperature sensor includes a signal transmission module, a temperature acquisition module, and a signal receiving module. The signal transmission module is composed of a wireless transmitter, with a circuit board inside the transmitter. The circuit board has a battery and a male connector, which extends to the outside. The temperature acquisition module includes a protective tube, with a temperature sensor at the bottom of the protective tube's inner cavity. The output end of the temperature sensor is connected to one end of a gray PTFE cable, which extends to the outside of the protective tube. The gray PTFE cable is heat-shrinkable with the upper port of the protective tube using PTFE heat-shrink tubing. The other end of the gray PTFE cable is connected to a female connector, which is connected to the male connector. The signal receiving module is composed of a wireless temperature signal receiver, which also has an interface layer and a data layer. One wireless temperature signal receiver can receive signals transmitted from multiple wireless transmitters.

[0007] Preferably, the wireless transmitter uses 422MHz, FSK radio frequency communication. Compared with WiFi, 433MHz radio frequency communication has lower power consumption and better transmission performance through walls. Compared with 2G / 4G, 433MHz radio frequency communication has lower power consumption and does not require a data card, so it does not generate data traffic.

[0008] Preferably, the outer wall of the protective tube is provided with a process connection thread.

[0009] Preferably, the interface layer reads the buffered data received by the wireless temperature signal receiver via an RS-485 or USB interface.

[0010] Preferably, the data layer adopts the standard MODBUS-RTU protocol, which is simple and easy to use for secondary development.

[0011] Preferably, the temperature sensor can be a thermocouple or a resistance temperature detector (RTD).

[0012] The advantages and positive effects of this utility model are:

[0013] 1. This utility model enables wireless transmission of the temperature of the fluid to be tested through a wireless transmitter and a wireless temperature signal receiver, enhancing the real-time nature of temperature measurement data, allowing for closer temperature monitoring and timely feedback of temperature information. At the same time, it solves the problem of temperature signal transmission when the entire equipment is sealed, ensuring real-time and accurate temperature measurement under sealed operation, enabling long-term operation of the equipment, solving the sealing problem of wired transmission, and reducing the inconvenience caused by maintenance. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the overall front view structure of a wireless transmission temperature sensor according to this utility model;

[0016] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This utility model Figure 1 Schematic diagram of the internal structure of the signal transmission module;

[0018] Figure 4 This is a schematic diagram of the signal receiving module structure of this utility model;

[0019] Figure 5 This utility model Figure 4 A side view of the signal receiving module.

[0020] The labels in the attached diagram are described as follows: 10. Signal output module; 11. Temperature acquisition module; 12. Protective tube; 13. Process connection thread; 14. PTFE heat shrink tubing; 15. Signal receiving module; 16. Temperature sensor; 17. Wireless transmitter; 18. Gray PTFE cable; 19. Female plug; 20. Male socket; 21. Circuit board; 22. Battery; 23. Wireless temperature signal receiver; 24. Interface layer; 25. Data layer. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] The following is combined Figure 1-5 This utility model will be described in detail below. For ease of description, the directions mentioned below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The directions of front, back, left, right, up, and down in the view are consistent. Figure 1 This is a front view of the device of this utility model. Figure 1 The directions shown are consistent with the front-facing, back-facing, left-right, up-down directions of the device.

[0023] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0024] Please see Figure 1-5 This utility model provides an embodiment of a wireless temperature sensor, comprising a signal transmission module 10, a temperature acquisition module 11, and a signal receiving module 15. The signal transmission module 10 is composed of a wireless transmitter 17, the wireless transmitter 17 having a circuit board 21 inside, a battery 22 and a male connector 20 on the circuit board 21, the male connector 20 extending to the outside. The temperature acquisition module 11 includes a protective tube 12, and a temperature sensor 16 is located at the bottom of the inner cavity of the protective tube 12. The output end of the temperature sensor 16 is connected to one end of a gray PTFE cable 18. The gray PTFE cable 18 extends to the outside of the protective tube 12. The gray PTFE cable 18 and the upper port of the protective tube 12 are heat-shrinkable through a PTFE heat-shrink tubing 14. The other end of the gray PTFE cable 18 is connected to a female plug 19, and the female plug 19 is connected to a male socket 20. The signal receiving module 15 is composed of a wireless temperature signal receiver 23. The wireless temperature signal receiver 23 is also provided with an interface layer 24 and a data layer 25. One wireless temperature signal receiver 23 can receive signals transmitted by multiple wireless transmitters 17.

[0025] In another embodiment, the wireless transmitter 17 uses 422MHz, FSK radio frequency communication. Compared with WiFi, 433MHz radio frequency communication has lower power consumption and better transmission performance through walls. Compared with 2G / 4G, 433MHz radio frequency communication has lower power consumption and does not require a data card, thus not generating data traffic.

[0026] In another embodiment, a process connection thread 13 is fixedly provided on the outer wall of the protective tube 12.

[0027] In another embodiment, the interface layer 24 reads the buffered data received by the wireless temperature signal receiver via an RS-485 or USB interface.

[0028] In another embodiment, the data layer 25 adopts the standard MODBUS-RTU protocol, which facilitates secondary development.

[0029] In another embodiment, the temperature sensor 16 may be a thermocouple or a resistance temperature detector (RTD).

[0030] In practical implementation, the device is connected to the equipment under test via the process connection thread 13, so that the bottom of the protective tube 12 comes into contact with the fluid under test, thereby allowing the temperature sensor 16 to measure the data. Subsequently, the temperature acquisition module 11 transmits the data to the wireless transmitter 17. The circuit board 21 in the wireless transmitter 17 sends the signal to the wireless temperature signal receiver 23, which in turn receives the temperature of the fluid measured by the temperature sensor 16. Through the wireless transmitter 17 and the wireless temperature signal receiver 23, the temperature of the fluid under test can be wirelessly transmitted, enhancing the real-time performance of the temperature measurement data, enabling closer temperature detection and timely feedback of temperature information. At the same time, it solves the problem of temperature signal transmission when the entire equipment is sealed, ensuring real-time and accurate temperature measurement under sealed operation, enabling long-term operation of the equipment, solving the sealing problem when using wired transmission, and reducing the inconvenience caused by maintenance.

[0031] It should be emphasized that the embodiments described in this utility model are illustrative rather than limiting. Therefore, this utility model is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this utility model are also within the scope of protection of this utility model.

Claims

1. A wireless temperature sensor, characterized in that: The system includes a signal transmission module (10), a temperature acquisition module (11), and a signal receiving module (15). The signal transmission module (10) is composed of a wireless transmitter (17). The wireless transmitter (17) has a circuit board (21) inside its cavity. The circuit board (21) has a battery (22) and a male connector (20) on it. The male connector (20) extends to the outside. The temperature acquisition module (11) includes a protective tube (12). The bottom of the inner cavity of the protective tube (12) has a temperature sensor (16). The output end of the temperature sensor (16) is connected to one end of a gray PTFE cable (18). 8) Extending to the outside of the protective tube (12), the gray PTFE cable (18) is heat-shrinkable with the upper port of the protective tube (12) through a PTFE heat-shrink tubing (14). The other end of the gray PTFE cable (18) is connected to the female plug (19), and the female plug (19) is connected to the male socket (20). The signal receiving module (15) is composed of a wireless temperature signal receiver (23). The wireless temperature signal receiver (23) is also provided with an interface layer (24) and a data layer (25). One wireless temperature signal receiver (23) can receive signals transmitted by multiple wireless transmitters (17).

2. The wireless transmission temperature sensor according to claim 1, characterized in that: The wireless transmitter (17) uses 422MHz, FSK radio frequency communication.

3. The wireless transmission temperature sensor according to claim 1, characterized in that: The outer wall of the protective tube (12) is fixedly provided with a process connection thread (13).

4. The wireless transmission temperature sensor according to claim 1, characterized in that: The interface layer (24) reads the cached data received by the wireless temperature signal receiver through the USB interface.

5. A wireless transmission temperature sensor according to claim 1, characterized in that: The data layer (25) adopts the standard MODBUS-RTU protocol, which facilitates secondary development.

6. A wireless transmission temperature sensor according to claim 1, characterized in that: The temperature sensor (16) can be a thermocouple or a resistance temperature detector (RTD).

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