Pluggable multi-channel wireless temperature sensor

Abstract

The utility model relates to a pluggable multi-channel wireless temperature sensor, which comprises a rectangular shell composed of an upper cover and a bottom bin. The circuit board integrates the functions of power management, multi-channel temperature acquisition and wireless communication; the hollow coil can sense and convert alternating electromagnetic energy into electric energy to realize self power supply; the plurality of temperature sensing probes are connected with the circuit board in a plugging manner to realize rapid installation and replacement; the multi-channel temperature monitoring device is compact in structure, simple to install and convenient to maintain, is suitable for various occasions needing multi-channel temperature monitoring, and has important application value.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a plug-in multi-channel wireless temperature sensor, which is used for realizing rapid collection and wireless transmission of multi-channel temperature information and convenient installation and replacement of temperature sensing probes. Background Art

[0002] In many industries, such as cold chain logistics, chemical production, and power systems, accurate temperature monitoring is essential. Traditional wired active temperature monitoring solutions mostly rely on wired connections, which not only increases the complexity of installation and maintenance, but also limits the deployment flexibility of monitoring points. Although some existing wireless passive temperature sensors solve the problem of wired connections, they can usually only monitor one temperature point and cannot meet the needs of simultaneous monitoring of multiple points. In addition, the temperature sensing elements in these wireless passive sensors are usually fixed inside the shell, which may cause temperature reading deviations due to external temperature fluctuations. On the other hand, even if the design of an external temperature probe is adopted, the fixed welding method of the probe also limits the possibility of flexible replacement or upgrading. Therefore, it is of great practical significance and application value to design a multi-channel wireless temperature sensor with simple structure, convenient installation and convenient maintenance. Utility Model Content

[0003] The utility model provides a plug-in multi-channel wireless temperature sensor, which aims to realize convenient multi-channel temperature measurement and monitoring, while ensuring the measurement accuracy and stability of data transmission. The sensor has a plug-in design, so that the temperature probe can be quickly installed and replaced, adapting to the needs of various application scenarios.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions.

[0005] A pluggable multi-channel wireless temperature sensor, comprising:

[0006] A housing, which is rectangular in design and consists of an upper cover and a bottom compartment, made of plastic or other insulating materials, and is used to fix and protect internal components;

[0007] A circuit board is installed inside the housing, integrating power management, multi-channel temperature collection and wireless communication functions, and the bottom surface of the circuit board is provided with six female connector terminals evenly distributed on both sides, with openings facing outwards;

[0008] A hollow coil, installed inside the housing and electrically connected to the rectifier of the circuit board, capable of sensing and converting alternating electromagnetic energy into electrical energy, which is stored in an energy storage capacitor on the circuit board;

[0009] Multiple temperature sensing probes, each consisting of a temperature sensing electronic component, a cable and a male connecting terminal, are connected to the female connecting terminal on the circuit board by plugging and unplugging the male connecting terminal to achieve temperature detection and signal transmission, and are easy to install and replace.

[0010] The power management part of the circuit board is composed of a rectifier, an energy storage capacitor, and a linear voltage regulator chip. The rectifier converts the alternating current of the air-core coil into direct current and stores it in the energy storage capacitor. The linear voltage regulator chip stabilizes the voltage of the energy storage capacitor to a fixed output, ensuring that the sensor works stably when the external power supply fluctuates.

[0011] The multi-channel temperature acquisition function of the circuit board is realized by a single chip microcomputer, a multi-channel temperature acquisition A / D and the multiple temperature sensing probes, and can monitor the changes of multiple temperature points at the same time.

[0012] The wireless communication function of the circuit board enables the sensor to transmit the collected temperature data to the receiving device in real time, making it convenient for users to perform remote monitoring and management.

[0013] Three square holes matching the female connecting terminals on the circuit board are respectively arranged on both sides of the bottom compartment of the shell for the male connecting terminals to pass through so as to plug and unplug the female connecting terminals.

[0014] The number of the temperature sensing probes is six; the temperature sensing electronic element is a thermistor or a thermocouple, which has the advantages of small size and fast response to temperature changes.

[0015] The cable is a multi-core twisted soft copper wire to ensure the stability of signal transmission.

[0016] The male connecting terminal and the female connecting terminal adopt the XH-2.54 model, which is small in size, easy to plug and unplug, and reliable in connection.

[0017] The temperature sensing electronic element extends to the outside of the housing through the cable, ensuring that the measured temperature is not affected by the temperature of the housing and the circuit board.

[0018] A circular light emitting diode is arranged on the top surface of the circuit board to display the working status of the sensor.

[0019] The upper cover of the shell is provided with a round hole corresponding to the round light emitting diode on the circuit board, so as to facilitate observation of the flashing state of the diode.

[0020] The front end side of the bottom bin of the shell is provided with a through hole corresponding to the rectangular hollow of the hollow coil, which is suitable for installing a silicon steel sheet core or other magnetic conductive materials to enhance the effect of the hollow coil inducing the magnetic field.

[0021] A tie hole is provided on the rear end side of the bottom bin of the shell for the tie to pass through, so as to facilitate fixing the sensor on the tested device.

[0022] By optimizing the design of the circuit board and the housing, the number of the temperature sensing probes can be further increased, thereby improving the multi-channel temperature acquisition capability of the sensor.

[0023] The advantages and positive effects of the utility model are:

[0024] Compact structure and easy installation: The sensor adopts a rectangular design, compact structure, easy to carry and install. At the same time, the temperature probe is connected to the circuit board by plugging and unplugging, and the installation and replacement process is simple and fast, which improves work efficiency.

[0025] Multi-channel temperature acquisition capability: The sensor realizes multi-channel temperature acquisition through multiple temperature sensing probes, and can monitor the changes of multiple temperature points at the same time to meet the temperature monitoring needs in complex environments.

[0026] Wireless communication function: The sensor has wireless communication function, which can transmit the collected temperature data to the receiving device in real time, making it convenient for users to conduct remote monitoring and management without wiring, reducing installation costs.

[0027] Self-powered design: The hollow coil senses and converts alternating electromagnetic energy into electrical energy, providing a stable power supply for the sensor without the need for an external power supply, reducing the cost of use and the difficulty of maintenance.

[0028] In summary, the plug-in multi-channel wireless temperature sensor has the advantages of compact structure, convenient installation, multi-channel temperature acquisition, wireless communication, self-power supply, etc. These advantages and effects make the sensor have a wide range of application prospects in occasions where multi-point temperature monitoring is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is the structural diagram of the sensor housing;

[0030] Figure 2 is a schematic diagram of the appearance of the sensor;

[0031] Figure 3 It is a schematic diagram of the structure of the circuit board and the hollow coil in the housing;

[0032] Figure 4 It is the structural schematic diagram of the temperature sensing probe;

[0033] Figure 5 is the circuit diagram of the sensor;

[0034] Figure 6 The schematic diagram of the sensor installation is shown in Figure 2.

[0035] Reference numerals:

[0036] 100-shell, 101-shell cover, 102-shell bottom compartment, 103-square holes on both sides of the shell bottom compartment, 104-through holes on the front side of the shell bottom compartment corresponding to the hollow coil, 105-tie holes on the rear side of the shell bottom compartment, 106-round holes on the shell top cover;

[0037] 200-circuit board, 201-light emitting diode, 202-hollow coil, 203-female connector on the circuit board, 204-rectifier, 205-energy storage capacitor, 206-linear voltage regulator chip, 207-single chip microcomputer, 208-wireless communication module, 209-multi-channel temperature acquisition A / D;

[0038] 300-temperature sensing probe, 301-temperature sensing electronic component, 302-cable, 303-male connection terminal;

[0039] 400-AC cable, 401-cable under test, 402-cable tie, 403-magnetic tape, 404-high temperature resistant tape. DETAILED DESCRIPTION

[0040] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0041] A plug-in multi-channel wireless temperature sensor, the structure of which is as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, it mainly includes a housing 100 , a circuit board 200 , an air-core coil 202 and a plurality of temperature sensing probes 300 .

[0042] 1. Shell part

[0043] Shell 100 Figure 1 It adopts a rectangular design, consisting of an upper cover 101 and a bottom compartment 102, and is made of plastic or other insulating materials to ensure the insulation and safety of the sensor. Three square holes 103 are provided on each side of the bottom compartment 102, for the male connection terminal 303 of the temperature sensor to pass through and connect with the female connection terminal 203 on the circuit board 200. A through hole 104 corresponding to the rectangular hollow of the hollow coil 202 is provided on the front side of the bottom compartment 102, which is convenient for adapting and installing a silicon steel sheet core or other magnetic conductive materials to enhance the effect of the hollow coil inducing the magnetic field. A tie hole 105 is provided on the rear end side to facilitate fixing the sensor on the device. A round hole 106 is provided on the upper cover 101 to facilitate observing the flashing state of the light-emitting diode 201 on the circuit board 200.

[0044] 2. Circuit board part

[0045] Circuit board 200 Figure 3Installed inside the housing 100, it integrates power management, multi-channel temperature collection and wireless communication functions. Figure 5 As shown, the power management part is composed of a rectifier 204, an energy storage capacitor 205, and a linear voltage regulator chip 206, which ensures that the sensor can work stably when the external power supply fluctuates. Specifically, the rectifier 204 converts the alternating current output by the air-core coil 202 into direct current and stores it in the energy storage capacitor 205. The linear voltage regulator chip 206 stabilizes the fluctuating voltage of the energy storage capacitor 205 at 3.3V and supplies power to the single-chip microcomputer 207 and the wireless communication module 208. The single-chip microcomputer 207 sequentially collects the temperature signals of the six temperature sensing probes 300 through the multi-channel temperature acquisition A / D 209, and then transmits the collected temperature data to the receiving device in real time through the wireless communication module 208, which is convenient for users to conduct remote monitoring and management.

[0046] The top surface of the circuit board 200 is provided with a circular light-emitting diode 201 for displaying the working status of the sensor. The bottom surface of the circuit board 200 is provided with six female connection terminals 203 evenly distributed on both sides, with openings facing outwards, which are convenient for plugging and unplugging with the male connection terminals 303 of the temperature sensing probe 300.

[0047] 3. Hollow coil part

[0048] Air core coil 202 Figure 3 It is installed inside the housing 100 and is electrically connected to the rectifier 204 on the circuit board 200. It can sense and convert alternating electromagnetic energy into electrical energy to provide power supply for the sensor.

[0049] 4. Temperature sensor part

[0050] The structure of the temperature probe 300 is as follows: Figure 4 As shown, each probe is composed of a temperature sensing electronic component 301, a cable 302 and a male connection terminal 303. The temperature sensing electronic component 301 uses a thermistor or a thermocouple and other components, which can quickly respond to temperature changes. The cable 302 is used to transmit temperature signals, and the male connection terminal 303 is used to plug and unplug the female connection terminal 203 on the circuit board 200.

[0051] 5. Installation and Use

[0052] In practical applications, the sensor is installed as follows Figure 6 As shown. First, the sensor is fixed on the AC cable 400 by passing the cable tie 402 through the cable tie hole 105. Then, the male connection terminal 303 of the temperature sensing probe 300 is passed through the square hole 103 of the bottom compartment 102, and is plugged and connected with the female connection terminal 203 on the circuit board 200. Next, the temperature sensing electronic component 301 is closely attached to the joint of the cable 401 to be tested, and is fixed with a high temperature resistant tape 404.

[0053] When the sensor is working, the hollow coil 202 can sense the alternating electromagnetic energy of the AC cable 400 and convert it into electrical energy to power the circuit board 200, and the light-emitting diode 201 will flash to show the working status. The temperature probe 300 senses the temperature change in real time and transmits the analog temperature signal to the circuit board 200 through the cable 302. The multi-channel temperature acquisition A / D 209 converts the received analog temperature signal into a digital signal and transmits it to the single-chip microcomputer 207. After the single-chip microcomputer 207 processes it, it sends the data to the receiving end through the wireless communication module 208.

[0054] 6. Optimization and expansion

[0055] By optimizing the design of the circuit board 200 and the housing 100, the number of temperature sensing probes 300 can be increased, and the multi-channel temperature acquisition capability of the sensor can be improved. In addition, the magnetic conductive tape 403 is adapted to be installed in the through hole 104 and wrapped around the AC cable 400, which can enhance the effect of the air-core coil 202 inducing the magnetic field and improve the energy conversion efficiency of the sensor.

[0056] The plug-in multi-channel wireless temperature sensor of the utility model has the advantages of compact structure, convenient installation, accurate measurement, wireless communication, etc. It is suitable for various occasions requiring multi-point temperature monitoring and has broad application prospects.

[0057] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A plug-in multi-channel wireless temperature sensor, characterized in that: include: A housing, which is rectangular in design and consists of an upper cover and a bottom compartment, and is made of electrically insulating material to fix and protect internal components; A circuit board is installed inside the housing, integrating power management, multi-channel temperature collection and wireless communication functions, and the bottom surface of the circuit board is provided with six female connector terminals evenly distributed on both sides, with openings facing outwards; A hollow coil, installed inside the housing and electrically connected to the rectifier of the circuit board, capable of sensing and converting alternating electromagnetic energy into electrical energy, which is stored in an energy storage capacitor on the circuit board; Multiple temperature sensing probes, each consisting of a temperature sensing electronic component, a cable and a male connecting terminal, are connected to the female connecting terminal on the circuit board by plugging and unplugging the male connecting terminal to achieve temperature detection and signal transmission, and are easy to install and replace.

2. A plug-in multi-channel wireless temperature sensor as claimed in claim 1, characterized in that: The power management part of the circuit board is composed of a rectifier, an energy storage capacitor, and a linear voltage regulator chip. The rectifier converts the alternating current of the air-core coil into direct current and stores it in the energy storage capacitor. The linear voltage regulator chip stabilizes the voltage of the energy storage capacitor to a fixed output to ensure that the sensor works stably when the external power supply fluctuates. The multi-channel temperature acquisition function of the circuit board is realized by a single chip microcomputer, a multi-channel temperature acquisition A / D and the multiple temperature sensing probes, and can monitor the changes of multiple temperature points at the same time; The wireless communication function of the circuit board enables the sensor to transmit the collected temperature data to the receiving device in real time, making it convenient for users to perform remote monitoring and management.

3. A plug-in multi-channel wireless temperature sensor as claimed in claim 1, characterized in that: Three square holes matching the female connecting terminals on the circuit board are respectively arranged on both sides of the bottom compartment of the shell for the male connecting terminals to pass through so as to plug and unplug the female connecting terminals.

4. A plug-in multi-channel wireless temperature sensor as claimed in claim 1, characterized in that: The number of the temperature sensing probes is six; The temperature sensing electronic element is a thermistor or a thermocouple, which has the advantages of small size and fast response to temperature changes; The cable is a multi-core twisted soft copper wire to ensure the stability of signal transmission; The male connection terminal and the female connection terminal adopt the XH-2.54 model, which is small in size, easy to plug and unplug, and reliable in connection; The temperature sensing electronic element extends to the outside of the housing through the cable, ensuring that the measured temperature is not affected by the temperature of the housing and the circuit board.

5. The pluggable multi-channel wireless temperature sensor according to claim 1, characterized in that: A circular light emitting diode is provided on the top surface of the circuit board for displaying the working status of the sensor; The upper cover of the housing is provided with a circular hole corresponding to the circular light-emitting diode on the circuit board, so as to facilitate observation of the flashing state of the diode; The front end side of the bottom bin of the shell is provided with a through hole corresponding to the rectangular hollow of the hollow coil, which is suitable for installing magnetic conductive material to enhance the effect of the hollow coil inducing magnetic field; A tie hole is provided on the rear end side of the bottom bin of the shell for the tie to pass through, so as to facilitate fixing the sensor on the tested device.

6. The plug-in multi-channel wireless temperature sensor according to any one of claims 1 to 5, characterized in that: By optimizing the design of the circuit board and the housing, the number of the temperature sensing probes can be further increased, thereby improving the multi-channel temperature acquisition capability of the sensor.

Images