CN210405336U - Thermoelectric energy collecting device for self-powered WSN node - Google Patents
Thermoelectric energy collecting device for self-powered WSN node Download PDFInfo
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- CN210405336U CN210405336U CN201922096120.7U CN201922096120U CN210405336U CN 210405336 U CN210405336 U CN 210405336U CN 201922096120 U CN201922096120 U CN 201922096120U CN 210405336 U CN210405336 U CN 210405336U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model belongs to wireless sensor and building safety monitoring field, concretely relates to a thermoelectric energy collection device for self-power WSN node, a serial communication port, including thermocouple sensor and control by temperature change power management module, control by temperature change power management module passes through pin connection thermocouple sensor. The utility model discloses install in the superelevation layer chimney, can monitor superelevation layer chimney operating condition, utilize thermoelectric effect, realize wireless sensor system's self-power. Meanwhile, the power consumption of the wireless sensor node is reduced, long-term and real-time monitoring of the structure can be realized, and the wireless sensor node has positive significance for health maintenance, safety prevention and other work of the structure.
Description
Technical Field
The utility model belongs to wireless sensor and building safety monitoring field, concretely relates to thermoelectric energy collection device for self-power WSN node.
Background
With the development of modern society, the number of super high-rise buildings is increasing day by day, and the safety of the super high-rise buildings is more and more valued by people. Due to factors such as geological conditions, weather conditions, natural disasters, self loads and the like, if the overall structure of the building is unsuccessfully supervised, the safety of the building can be seriously influenced, and even serious casualty accidents can be caused. The rapid development and application of the Wireless Sensor Network (WSN) provide great help for the realization of real-time monitoring and display of super high-rise structures.
The nodes in the wireless sensor network are generally supplied with power by batteries, the electric quantity is very limited, but the survival time of the wireless sensor network is very long, and the batteries are difficult to replace due to the relation between the application environment and the number of the nodes. Once the energy of the sensing node is exhausted, only the abandonment or replacement measures can be taken. Therefore, it is important for the wireless sensor node to realize self-power.
Disclosure of Invention
In order to solve the problem that wireless sensor node power supply is not enough among the prior art, the utility model discloses a thermoelectric energy collection device for self-power WSN node accomplishes the self-power through utilizing the thermocouple sensor, has realized the long-term real-time effectual monitoring of wireless sensor node pair superelevation layer chimney.
In order to realize the purpose, the utility model discloses a technical scheme is:
the thermoelectric energy collection device for the self-powered WSN node is characterized by comprising a thermocouple sensor and a temperature control power management module, wherein the temperature control power management module is connected with the thermocouple sensor through a lead;
the thermocouple sensor comprises a binding post, a thermocouple wire and a fixing device, wherein the thermocouple wire comprises a cold end and a hot end, the cold end of the thermocouple wire is connected with the binding post, and the hot end of the thermocouple wire is a free end;
the fixing device comprises an upper protective sleeve, a measuring protective sleeve and a mounting flange, the upper protective sleeve is sleeved on the upper portion of the thermocouple wire, the measuring protective sleeve is sleeved on the lower portion of the thermocouple wire, and the mounting flange is arranged on the upper portion of the measuring protective sleeve;
the temperature control power management module comprises an LTC3109 chip, a temperature control switch and a peripheral circuit consisting of a transformer T1, a transformer T2, an integrated operational amplifier A1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8 and a capacitor C9.
Further, the upper protection sleeve and the measuring protection sleeve are filled with insulating materials.
Further, the fixing device further comprises a heat dissipation element, and the heat dissipation element is connected with the upper protection sleeve and the measurement protection sleeve.
Furthermore, a plurality of layers of radiating fins are arranged on the radiating element.
Furthermore, the heat dissipation element is filled with heat conduction materials.
Furthermore, fixing device still includes the terminal box, the terminal box sets up the upper portion at last protective sleeve, the lead wire passes through the terminal box and is connected with the terminal post.
Compared with the prior art, the utility model following beneficial effect has:
(1) the utility model discloses install in the superelevation layer chimney, can monitor superelevation layer chimney operating condition, utilize thermoelectric effect, realize wireless sensor system's self-power. Meanwhile, the power consumption of the wireless sensor node is reduced, long-term and real-time monitoring of the structure can be realized, and the wireless sensor node has positive significance for health maintenance, safety prevention and other work of the structure.
(2) The utility model discloses still include control by temperature change power management module, can not only provide stable voltage for the WSN node, can also reduce the consumption of energy storage electric capacity electric quantity at the chimney stop work to the operating time of extension WSN node.
Drawings
FIG. 1 is a schematic diagram of a thermocouple sensor configuration;
FIG. 2 is a schematic cross-sectional view of a thermocouple sensor;
FIG. 3 is a schematic view of a thermocouple sensor mounting arrangement;
FIG. 4 is a circuit diagram of the control and tank circuit according to an embodiment.
The reference numerals in the figures mean: the measuring and heat-insulating device comprises a junction box 1, a lead 2, an upper protective sleeve 3, a heat-radiating element 4, a mounting flange 5, a measuring protective sleeve 6, a wiring post 7, a heat-conducting material 8, an insulating material 9, a thermocouple wire 10, a fixing sleeve 11 and a sealing gasket 12.
Detailed Description
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.
In the present invention, unless otherwise specified, the use of directional terms such as "upper" and "lower" generally means that the terms are defined with reference to the drawing plane of the corresponding drawing, and "inner" and "outer" mean that the terms are inner and outer relative to the outline of the corresponding part.
As shown in fig. 1, 2 and 4, a thermoelectric energy collection device for a self-powered WSN node comprises a thermocouple sensor and a temperature-controlled power management module, wherein the thermocouple sensor is connected with the temperature-controlled power management module through a lead; the thermocouple wires are packaged into the thermocouple sensor, the thermocouple sensor is provided with the fixing sleeve and embedded into the chimney, the acquired heat energy is converted into electric energy by the thermocouple sensor according to the thermoelectric effect, and the electric energy is output to the WSN node by the temperature control power management module, so that the self-power supply of the WSN node is realized.
The thermocouple sensor comprises a binding post 7, a thermocouple wire 10 and a fixing device, wherein the thermocouple wire 10 comprises a cold end and a hot end, the cold end of the thermocouple wire 10 is connected with the binding post 7, the hot end of the thermocouple wire 10 is a free end, the thermocouple wire 10 is formed by welding two conductors with different components of nickel chromium and nickel silicon, according to a thermoelectric effect, when the hot end and the cold end of the thermocouple wire have temperature difference, a thermoelectric current can be generated in a loop, and the thermoelectric current passes through a temperature control power supply management module, so that electric power is provided for a wireless sensor node;
the fixing device comprises an upper protective sleeve 3, a measuring protective sleeve 6 and a mounting flange 5, wherein the upper protective sleeve 3 is sleeved on the upper part of a thermocouple wire 10, the measuring protective sleeve 6 is sleeved on the lower part of the thermocouple wire 10, and the mounting flange 5 is arranged on the upper part of the measuring protective sleeve 6;
the utility model relates to a thermoelectric energy collection device for self-power WSN node, through utilizing the thermocouple sensor to accomplish the self-power, realized the long-term real-time effectual monitoring of wireless sensor node pair chimney.
Specifically, the upper protection sleeve 3 and the measurement protection sleeve 6 are filled with an insulating material 9.
Specifically, the fixing device further comprises a heat dissipation element 4, wherein the heat dissipation element 4 is connected with the upper protection sleeve 3 and the measurement protection sleeve 6.
Preferably, the heat dissipation element 4 is provided with a plurality of layers of heat dissipation fins, so that the cold end temperature of the thermocouple is lower, and the thermocouple sensor outputs more electromotive force.
Specifically, the heat dissipation element 4 is filled with a heat conduction material 8.
Specifically, the fixing device further comprises a junction box 1, the junction box 1 is arranged on the upper portion of the upper protective sleeve 3, and the lead 2 is connected with a binding post 7 through the junction box 1.
As shown in FIG. 3, when the utility model is used, firstly, the fixing sleeve 11 is transversely embedded into the chimney, then the thermocouple sensor is arranged in the fixing sleeve 11, and the sealing gasket 12 is added between the fixing sleeve 11 and the mounting flange 5, so as to improve the stability of the connecting part. Finally, the thermocouple sensor is fixedly connected to the fixing sleeve 11 by a nut.
Specifically, the circuit that the control by temperature change power management module adopted is shown in fig. 4, the utility model discloses a conventional use circuit of LTC3109 chip, after C1A pin of LTC3109 chip establishes ties electric capacity C2, connects one end of transformer T1 secondary winding; after a C2A pin of the LTC3109 chip is connected with a capacitor C3 in series, the LTC is connected between a secondary winding of a transformer T1 and a capacitor C2, and the other end of the secondary winding of the transformer T1 is grounded; the SWA pin of the LTC3109 chip is connected with one end of the primary winding of the transformer T1, and the other end of the primary winding of the transformer T1 is connected with the positive electrode of the thermocouple sensor; the VINA pin of the LTC3109 chip is connected with the negative electrode of the thermocouple sensor, and the capacitor C1 is connected with the output end of the thermocouple sensor in parallel; after a C1B pin of the LTC3109 chip is connected with a capacitor C4 in series, the LTC3109 chip is connected with one end of a secondary winding of a transformer T2; after a C2B pin of the LTC3109 chip is connected with a capacitor C5 in series, the LTC is connected between a secondary winding of a transformer T2 and a capacitor C4, and the other end of the secondary winding of the transformer T2 is grounded; the SWB pin of the LTC3109 chip is connected with one end of the primary winding of the transformer T1, and the other end of the primary winding of the transformer T1 is connected with the negative electrode of the thermocouple sensor; a VINB pin of the LTC3109 chip is connected with the positive electrode of the thermocouple sensor; the VS2 pin of the LTC3109 chip is grounded; the GND pin of the LTC3109 chip is grounded; the VAUX pin of the LTC3109 chip is divided into two paths: one path is connected with a pin VS1, and the other path is connected with a capacitor C8 and then grounded; the VSTORE pin of the LTC3109 chip is connected with the temperature control switch S1 and the energy storage capacitor C9 in series and then is grounded; the VOUT2_ EN pin of the LTC3109 chip is connected with the microprocessor; the PGOOD pin of the LTC3109 chip is connected with the in-phase end of the integrated operational amplifier A1, and the output end of A1 is divided into two paths: one path is connected with the reverse end of A1, and the other path is connected with the microprocessor; the VLDO pin of the LTC3109 chip is divided into two paths: one path is connected with the capacitor C7 in series and then is grounded, and the other path is connected with the microprocessor; the VOUT pin of LTC3109 chip is divided into two paths: one path is connected with the capacitor C6 in series and then is grounded, and the other path is connected with the radio frequency module; the VOUT2 pin of the LTC3109 chip is empty.
The S1 selects a metal expansion type normally-open series temperature control switch, when the chimney is in a dormant state at night, the temperature cannot reach the condition that the temperature control switch is closed, and the energy storage capacitor and the WSN node are in an open-circuit state, so that the consumption of the electric quantity of the energy storage capacitor is reduced, and the working time of the WSN node is prolonged; when the chimney is in a working state in daytime, the temperature reaches the condition that the temperature control switch is closed, and when the output voltage of the thermocouple sensor does not meet the voltage range of normal working of the LTC3109, the energy storage capacitor can drive the WSN node to enter the working state.
An integrated operational amplifier A1 is connected between a PGOOD pin of the LTC3109 chip and the microprocessor, and the output end of A1 is connected with an inverting end to form a unity gain amplifier, so that the capability of driving the microprocessor is improved.
The working principle of the circuit is as follows:
the thermocouple sensor converts the temperature difference on the two sides of the thermocouple sensor into a direct current electric signal to be output, and the direct current electric signal flows into pins of the chip LTC3109 through a peripheral circuit of the chip LTC 3109. The LTC3109 converts weak voltage (30-500 mv) into voltage capable of working by a microcontroller, a sensor and a wireless transceiver, and residual current flows into an energy storage capacitor C9 through a metal expansion type normally open series temperature control switch S1. When the chimney is in a dormant state at night, the temperature cannot reach the condition that the temperature control switch is closed, and the energy storage capacitor and the WSN node are in an open-circuit state, so that the consumption of the electric quantity of the energy storage capacitor is reduced, and the working time of the WSN node is prolonged; when the chimney is in a working state in daytime, the temperature reaches the condition that the temperature control switch is closed, and when the output voltage of the thermocouple sensor does not meet the voltage range of normal working of the LTC3109, the energy storage capacitor can drive the WSN node to enter the working state.
Claims (6)
1. The thermoelectric energy collection device for the self-powered WSN node is characterized by comprising a thermocouple sensor and a temperature control power management module, wherein the temperature control power management module is connected with the thermocouple sensor through a lead (2);
the thermocouple sensor comprises a binding post (7), a thermocouple wire (10) and a fixing device, wherein the thermocouple wire (10) comprises a cold end and a hot end, the cold end of the thermocouple wire (10) is connected with the binding post (7), and the hot end of the thermocouple wire (10) is a free end;
the fixing device comprises an upper protective sleeve (3), a measuring protective sleeve (6) and a mounting flange (5), wherein the upper protective sleeve (3) is sleeved on the upper part of a thermocouple wire (10), the measuring protective sleeve (6) is sleeved on the lower part of the thermocouple wire (10), and the mounting flange (5) is arranged on the upper part of the measuring protective sleeve (6);
the temperature control power management module comprises an LTC3109 chip, a temperature control switch and a peripheral circuit consisting of a transformer T1, a transformer T2, an integrated operational amplifier A1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8 and a capacitor C9.
2. The thermoelectric energy harvesting device for self-powered WSN nodes according to claim 1, characterized in that the upper protective sleeve (3) and the measuring protective sleeve (6) are filled with insulating material (9).
3. The thermoelectric energy harvesting device for a self-powered WSN node according to claim 1, wherein the fixture further comprises a heat-dissipating element (4), the heat-dissipating element (4) connecting the upper protective sleeve (3) and the measurement protective sleeve (6).
4. The thermoelectric energy harvesting device for self-powered WSN nodes according to claim 3, characterized in that said heat dissipating element (4) is provided with a plurality of layers of heat dissipating fins.
5. The thermoelectric energy harvesting device for a self-powered WSN node according to claim 3, wherein the heat dissipating element (4) is filled with a thermally conductive material (8).
6. The thermoelectric energy harvesting device for self-powered WSN nodes according to claim 1, characterized in that the fixture further comprises a junction box (1), the junction box (1) is arranged on the upper part of the upper protective sleeve (3), and the leads (2) are connected with the binding posts (7) through the junction box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922096120.7U CN210405336U (en) | 2019-11-29 | 2019-11-29 | Thermoelectric energy collecting device for self-powered WSN node |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922096120.7U CN210405336U (en) | 2019-11-29 | 2019-11-29 | Thermoelectric energy collecting device for self-powered WSN node |
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| CN210405336U true CN210405336U (en) | 2020-04-24 |
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| CN201922096120.7U Expired - Fee Related CN210405336U (en) | 2019-11-29 | 2019-11-29 | Thermoelectric energy collecting device for self-powered WSN node |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202023101498U1 (en) | 2023-03-24 | 2023-05-05 | Ram Kaji Budhathoki | A self-contained wireless sensor node system for energy harvesting |
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2019
- 2019-11-29 CN CN201922096120.7U patent/CN210405336U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202023101498U1 (en) | 2023-03-24 | 2023-05-05 | Ram Kaji Budhathoki | A self-contained wireless sensor node system for energy harvesting |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200424 Termination date: 20211129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |