A passive embedded acoustic wave acquisition type concrete temperature measuring device and method

Abstract

This invention discloses a passive embedded acoustic wave acquisition type concrete temperature measuring device and method in the field of measuring equipment technology, including a housing; a temperature sensor attached to the housing; a control unit for receiving temperature data from the temperature sensor and sending it to a back-end receiving device; a power supply group including a hot end and a cold end located at both ends of the housing cavity, and a P-type semiconductor and an N-type semiconductor connected to the hot end and the cold end; the power supply group is connected to the control unit and the temperature sensor through wires; it also includes a unidirectional heat-dissipating element for dissipating heat to the cold end and a unidirectional heat-absorbing element for supplying heat to the hot end; the internal temperature of the concrete is detected in real time by embedding an intelligent temperature measuring device in the concrete. The device power supply is generated based on the principle of thermoelectric effect, converting a large amount of heat energy in the concrete into electrical energy. When the internal temperature of the concrete reaches equilibrium, the device will automatically stop; the real-time detected concrete temperature can be obtained through the back-end data to achieve real-time monitoring.

Description

Technical Field

[0001] This invention relates to the technical field of measuring equipment, and in particular to a passive embedded acoustic wave acquisition type concrete temperature measuring device and method. Background Technology

[0002] In construction engineering, traditional methods for measuring the temperature of large-volume concrete typically involve connecting a pre-embedded temperature measuring cable to a main unit via wired connection. The entire temperature measurement process requires manual intervention at fixed intervals to measure and record the results. Commonly used large-volume concrete temperature measuring devices generally use batteries as their power source.

[0003] Existing technology has the following drawbacks: 1. To prevent large-volume concrete from cracking due to excessive temperature differences, which could lead to quality problems, the temperature needs to be checked every two hours for the first two days of curing, and every four hours from the third to the seventh day of curing. Therefore, the entire curing temperature monitoring process requires 24-hour human monitoring, impacting production efficiency and worker health. 2. This temperature monitoring method cannot monitor the concrete temperature in real time. If abnormal temperatures occur during periods not monitored and cooling is not implemented promptly, it will directly affect the concrete quality. 3. Battery-powered methods may fail to perform temperature monitoring due to insufficient battery power, thus affecting the entire concrete curing process. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the invention, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] Therefore, to solve the problem of cumbersome temperature measurement process for large-volume concrete, this invention provides a passive embedded acoustic acquisition type concrete temperature measurement device and method. The device pre-embeds an intelligent temperature measuring device into the concrete to detect the internal temperature of the concrete in real time. The device's power supply is generated based on the thermoelectric effect, converting a large amount of heat energy in the concrete into electrical energy, without requiring external power supply or battery power. The device automatically stops when the internal temperature of the concrete reaches equilibrium. The real-time detected concrete temperature can be obtained through a backend system for real-time monitoring, eliminating the need for workers to conduct on-site temperature measurement.

[0006] To solve the above-mentioned technical problems, the present invention provides a passive embedded acoustic wave acquisition type concrete temperature measuring device and method, which adopts the following technical solution: including: a shell; a temperature sensor attached to the shell; a control unit for receiving temperature measurement data from the temperature sensor and transmitting it to a background receiving device in the form of acoustic waves; a power supply group including a hot end and a cold end placed at both ends of the inner cavity of the shell, and a P-type semiconductor and an N-type semiconductor connected to the hot end and the cold end; the power supply group is connected to the control unit and the temperature sensor through wires; and also includes a unidirectional heat-releasing element for releasing heat to the cold end and a unidirectional heat-absorbing element for supplying heat to the hot end.

[0007] Optionally, at least one P-type semiconductor and at least one N-type semiconductor between the hot end and the cold end are connected in alternating series to form a power supply circuit, the power supply end of which is connected to a wire connected to the control unit and the temperature sensor.

[0008] Optionally, the temperature sensor has a plurality of sensors evenly arranged on the sidewall of the housing.

[0009] Optionally, the unidirectional heat-releasing element has multiple radially connected to the cold end sidewall, and the unidirectional heat-absorbing element has multiple radially connected to the hot end sidewall.

[0010] Optionally, the unidirectional heat-dissipating element includes a first heat-conducting strip and a first sleeve. The first sleeve is composed of a first heat-conducting sleeve and a first heat-insulating sleeve. A first movable heat-conducting strip is provided between the interior of the first heat-conducting sleeve and the first heat-insulating sleeve. One end of the first heat-conducting strip is connected to the cold end. A first contact break point area is provided between the other end of the first heat-conducting strip extending into the first heat-conducting sleeve and one end of the first movable heat-conducting strip. A first thermal expansion and contraction gas area is provided between the end of the first movable heat-conducting strip away from the first contact break point area and the first heat-insulating sleeve.

[0011] Optionally, the unidirectional heat-absorbing element includes a second heat-conducting strip and a second sleeve. The second sleeve is composed of a second heat-insulating sleeve and a second heat-conducting sleeve. A second movable heat-conducting strip is provided between the interior of the second heat-conducting sleeve and the second heat-insulating sleeve. One end of the second heat-conducting strip is connected to the hot end. A second contact break zone is provided between the other end of the second heat-conducting strip extending into the second heat-insulating sleeve and one end of the second movable heat-conducting strip. A second thermal expansion and contraction gas zone is provided between the end of the second movable heat-conducting strip away from the second contact break zone and the second heat-conducting sleeve.

[0012] Optionally, the control unit has a built-in acoustic wave transmitting module, which converts the received temperature sensor measurement data into acoustic waves and transmits it to the background receiving device, where the background receiving device acquires and converts it into temperature values.

[0013] A temperature measurement method based on the aforementioned passive embedded acoustic wave acquisition type concrete temperature measuring device includes: pre-embedding the temperature measuring device in the concrete; generating a temperature difference through the presence of a unidirectional heat-releasing element at the cold end and a unidirectional heat-absorbing element at the hot end; causing free electrons and holes in the placed P-type and N-type semiconductors to migrate due to the temperature difference, generating a thermoelectric effect and forming a current in the circuit to power the control unit and temperature sensor; the control unit receives the temperature measurement data from the temperature sensor in real time and converts it into acoustic waves for transmission to a background receiving device, which then acquires and converts it into a temperature value; after the heat release phenomenon of the concrete ends, the temperature measuring device automatically stops because the temperature difference between the cold and hot ends is too small to supply power to the control unit and temperature sensor.

[0014] In summary, the present invention has at least one of the following beneficial effects:

[0015] 1. This invention uses a pre-embedded temperature measuring device to detect the internal temperature of concrete in real time. The device is powered by the thermoelectric effect, which converts a large amount of heat energy in the concrete into electrical energy without the need for external power supply or battery power. When the internal temperature of the concrete reaches equilibrium, the device will automatically stop, realizing waste heat recovery and converting waste heat into electrical energy, thereby improving energy utilization.

[0016] 2. During the operation of the device, the present invention detects the concrete temperature in real time and transmits it to the back-end receiving device in the form of sound waves via the sound wave transmitting module. It monitors the on-site temperature sensor values ​​in real time and can check the concrete temperature at any time without the need for workers to go to the site for on-site temperature measurement, thereby reducing manpower consumption and improving production efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 Internal structure diagram;

[0020] Figure 3 This is a schematic diagram of the unidirectional heat dissipation element structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the unidirectional heat absorption element structure of the present invention.

[0022] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Temperature sensor; 3. Control unit; 4. Cold end; 5. Hot end; 6. P-type semiconductor; 7. N-type semiconductor; 8. Wire; 9. One-way heat dissipation element; 901. First heat-conducting strip; 902. First sleeve; 902a. First heat-conducting sleeve; 902b. First heat-insulating sleeve; 903. First movable heat-conducting strip; 904. First contact break point area; 905. First thermal expansion and contraction gas area; 10. One-way heat absorption element; 1001. Second heat-conducting strip; 1002. Second sleeve; 1002a. Second heat-insulating sleeve; 1002b. Second heat-conducting sleeve; 1003. Second movable heat-conducting strip; 1004. Second contact break point area; 1005. Second thermal expansion and contraction gas area. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] The thermoelectric effect is the conversion process from temperature difference to voltage, and vice versa. A thermoelectric device generates a voltage when there is a temperature difference across its terminals, or a voltage applied to it also generates a temperature difference. This effect can be used to generate electrical energy, measure temperature, and cool heated objects. The direction of heating or cooling depends on the applied voltage, making temperature control very easy with thermoelectric devices.

[0027] The thermoelectric effect is also known as the Peltier-Seebeck effect. Different metallic conductors (or semiconductors) have different free electron densities. When two different metallic conductors come into contact, electrons diffuse at the contact surface to eliminate the difference in electron density, forming a stable voltage at the other two ends of the two metals. The rate of electron diffusion is proportional to the temperature of the contact area.

[0028] Example 1

[0029] Reference Figures 1-2 This invention discloses a passive embedded acoustic wave acquisition type concrete temperature measuring device, comprising: a shell 1 for protecting the internal components; a temperature sensor 2 attached to the shell 1 for real-time detection of the internal temperature of a large volume of concrete; a control unit 3 for receiving the temperature data from the temperature sensor 2 and transmitting it to a back-end receiving device in the form of acoustic waves; a power supply group including a hot end 5 and a cold end 4 located at both ends of the inner cavity of the shell 1, both of which are used to form a circuit after generating electricity through thermoelectric effect; and a P-type semiconductor 6 and an N-type semiconductor 7 connected to the hot end 5 and the cold end 4, which are important components for generating thermoelectric effect; the power supply group is connected to the control unit 3 and the temperature sensor 2 through a wire 8 for supplying power to the control unit 3 and the temperature sensor 2; it also includes a unidirectional heat-releasing element 9 for releasing heat to the cold end 4 and a unidirectional heat-absorbing element 10 for supplying heat to the hot end 5, the unidirectional heat-releasing element 9 releasing heat to the cold end 4 to increase the temperature difference between the hot and cold ends; and the unidirectional heat-absorbing element 10 supplying heat to the hot end 5 to increase the temperature difference between the hot and cold ends.

[0030] In this embodiment, at least one P-type semiconductor 6 and at least one N-type semiconductor 7 between the hot end 5 and the cold end 4 are connected in alternating series to form a power supply circuit, and the power supply end of the power supply circuit is connected to the wire 8 connected to the control unit 3 and the temperature sensor 2.

[0031] In this embodiment, the temperature sensor 2 has multiple sensors evenly arranged on the side wall of the housing 1, which can detect temperature data at multiple locations of the concrete.

[0032] In this embodiment, the unidirectional heat-releasing element 9 has multiple radially connected to the side wall of the cold end 4, and the unidirectional heat-absorbing element 10 has multiple radially connected to the side wall of the hot end 5. The arrangement of multiple unidirectional heat-releasing elements 9 can improve the heat release effect of the cold end 4; the arrangement of multiple unidirectional heat-absorbing elements 10 can improve the heat supply effect of the hot end 5.

[0033] Reference Figure 3 In detail, in this embodiment, the unidirectional heat-dissipating component 9 includes a first heat-conducting strip 901 and a first sleeve 902. The first sleeve 902 is composed of a first heat-conducting sleeve 902a and a first heat-insulating sleeve 902b. A first movable heat-conducting strip 903 is provided between the interiors of the first heat-conducting sleeve 902a and the first heat-insulating sleeve 902b. One end of the first heat-conducting strip 901 is connected to the cold end 4. A first contact break point region 904 is provided between the other end of the first heat-conducting strip 901 extending into the first heat-conducting sleeve 902a and one end of the first movable heat-conducting strip 903. A first thermal expansion and contraction gas region 905 is provided between the end of the first movable heat-conducting strip 903 away from the first contact break point 904 and the first heat-insulating sleeve 902b.

[0034] Reference Figure 4 In detail, in this embodiment, the unidirectional heat-absorbing element 10 includes a second heat-conducting strip 1001 and a second sleeve 1002. The second sleeve 1002 is composed of a second heat-insulating sleeve 1002a and a second heat-conducting sleeve 1002b. A second movable heat-conducting strip 1003 is provided between the interior of the second heat-conducting sleeve 1002b and the second heat-insulating sleeve 1002a. One end of the second heat-conducting strip 1001 is connected to the hot end 5. A second contact break point region 1004 is provided between the other end of the second heat-conducting strip 1001 extending into the second heat-insulating sleeve 1002a and one end of the second movable heat-conducting strip 1003. A second thermal expansion and contraction gas region 1005 is provided between the end of the second movable heat-conducting strip 1003 away from the second contact break point region 1004 and the second heat-conducting sleeve 1002b.

[0035] The difference between the unidirectional heat release component 9 and the unidirectional heat absorption component 10 is the different connection positions of the first sleeve 902 and the second sleeve 1002 with the first heat-conducting strip 901. For example, in the unidirectional heat absorption component 10, the temperature of the second heat-conducting sleeve 1002b is higher than that of the second heat-insulating sleeve 1002a. Under the thermal expansion of the second thermal expansion and contraction gas zone 1005, the second movable heat-conducting strip 1003 contacts the second heat-conducting strip 1001. The heat at the second heat-conducting sleeve 1002b moves towards the second heat-conducting strip 1001. The heat moves from a distance towards the hot end 5, thus achieving heat absorption. The unidirectional heat release component 9 works on the same principle as the unidirectional heat absorption component 10. The heat moves from the cold end 4 to a distance, thus achieving heat release.

[0036] Example 2

[0037] Based on the same concept as Embodiment 1 above, a temperature measurement method based on the above-described passive embedded acoustic wave acquisition type concrete temperature measuring device is also included, comprising:

[0038] The entire temperature measuring device is arranged in a pre-embedded manner, with temperature sensor 2 attached to the protective shell for temperature measurement;

[0039] During the temperature measurement of large-volume concrete at both the hot and cold ends, a temperature difference is generated by the presence of the unidirectional heat-releasing element 9 at the cold end 4 and the unidirectional heat-absorbing element 10 at the hot end 5. Due to the temperature difference, the free electrons and holes of the P-type semiconductor 6 and N-type semiconductor 7 placed between them will migrate, generating a thermoelectric effect and forming a current in the circuit to power the control unit 3 and the temperature sensor 2.

[0040] The control unit 3 receives the temperature measurement data from the temperature sensor 2 in real time through its internal acoustic wave emission module, converts it into acoustic waves and transmits it to the background receiving device, which then acquires and converts it into a temperature value.

[0041] After the heat release phenomenon of the concrete ends, the temperature at various points inside is basically the same. The temperature measuring device automatically stops because the temperature difference between the cold end 4 and the hot end 5 is too small to supply power to the control unit 3 and the temperature sensor 2.

[0042] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A passive embedded acoustic wave acquisition type concrete temperature measuring device, characterized in that: include: Outer shell (1); Temperature sensor (2) is attached to the housing (1); The control unit (3) is used to receive the temperature measurement data from the temperature sensor (2) and send it to the background receiving device in the form of sound waves. The power supply unit includes a hot end (5) and a cold end (4) located at both ends of the inner cavity of the housing (1) and a P-type semiconductor (6) and an N-type semiconductor (7) connected to the hot end (5) and the cold end (4). The power supply unit is connected to the control unit (3) and the temperature sensor (2) via a wire (8); It also includes a one-way heat-releasing element (9) that releases heat to the cold end (4) and a one-way heat-absorbing element (10) that supplies heat to the hot end (5). The unidirectional heat-releasing element (9) has multiple radially connected to the side wall of the cold end (4), and the unidirectional heat-absorbing element (10) has multiple radially connected to the side wall of the hot end (5). The unidirectional heat-dissipating component (9) includes a first heat-conducting strip (901) and a first sleeve (902). The first sleeve (902) is composed of a first heat-conducting sleeve (902a) and a first heat-insulating sleeve (902b). A first movable heat-conducting strip (903) is provided between the interior of the first heat-conducting sleeve (902a) and the first heat-insulating sleeve (902b). One end of the first heat-conducting strip (901) is connected to the cold end (4). A first contact break area (904) is provided between the other end of the first heat-conducting strip (901) extending into the first heat-conducting sleeve (902a) and one end of the first movable heat-conducting strip (903). A first thermal expansion and contraction gas area (905) is provided between the end of the first movable heat-conducting strip (903) away from the first contact break area (904) and the first heat-insulating sleeve (902b). The unidirectional heat-absorbing component (10) includes a second heat-conducting strip (1001) and a second sleeve (1002). The second sleeve (1002) is composed of a second heat-insulating sleeve (1002a) and a second heat-conducting sleeve (1002b). A second movable heat-conducting strip (1003) is provided between the interior of the second heat-conducting sleeve (1002b) and the second heat-insulating sleeve (1002a). One end of the second heat-conducting strip (1001) is connected to the hot end (5). A second contact break area (1004) is provided between the other end of the second heat-conducting strip (1001) extending into the second heat-insulating sleeve (1002a) and one end of the second movable heat-conducting strip (1003). A second thermal expansion and contraction gas area (1005) is provided between the end of the second movable heat-conducting strip (1003) away from the second contact break area (1004) and the second heat-conducting sleeve (1002b).

2. The passive embedded acoustic wave acquisition type concrete temperature measuring device according to claim 1, characterized in that: At least one P-type semiconductor (6) and at least one N-type semiconductor (7) between the hot end (5) and the cold end (4) form a power supply circuit in an alternating series manner, wherein the power supply end of the power supply circuit is connected to a wire (8) connected to the control unit (3) and the temperature sensor (2).

3. The passive embedded acoustic wave acquisition type concrete temperature measuring device according to claim 1, characterized in that: The temperature sensor (2) has a plurality of sensors evenly arranged on the side wall of the housing (1).

4. The passive embedded acoustic wave acquisition type concrete temperature measuring device according to claim 1, characterized in that: The control unit (3) has a built-in acoustic wave transmitting module, which is used to convert the temperature measurement data received from the temperature sensor (2) into acoustic waves and transmit it to the background receiving device, which then acquires and converts it into temperature values.

5. A temperature measurement method based on the passive embedded acoustic wave acquisition type concrete temperature measuring device according to any one of claims 1-4, characterized in that: include: The temperature measuring device is embedded in the concrete. The presence of the unidirectional heat-dissipating element (9) at the cold end (4) and the unidirectional heat-absorbing element (10) at the hot end (5) creates a temperature difference. Due to the temperature difference, free electrons and holes in the placed P-type semiconductor (6) and N-type semiconductor (7) will migrate, generating a thermoelectric effect and forming a current in the circuit to power the control unit (3) and the temperature sensor (2). The control unit (3) receives the temperature measurement data from the temperature sensor (2) in real time and converts it into sound waves to transmit to the background receiving device, which then acquires and converts it into a temperature value. After the heat release phenomenon of the concrete ends, the temperature measuring device automatically stops because the temperature difference between the cold end (4) and the hot end (5) is too small to supply power to the control unit (3) and the temperature sensor (2).

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