Passive embedded sound wave acquisition type concrete temperature measuring device and method

Abstract

The invention discloses a passive embedded sound wave acquisition type concrete temperature measuring device and method in the technical field of measuring equipment. The passive embedded sound wave acquisition type concrete temperature measuring device comprises a shell; the temperature sensor is attached to the shell; the control unit is used for receiving temperature measurement data of the temperature sensor and sending the temperature measurement data to the background receiving device; the hot end and the cold end are arranged at the two ends of an inner cavity of the shell, and the P-type semiconductor and the N-type semiconductor are connected to the hot end and the cold end. The power supply group is connected with the control unit and the temperature sensor through wires. The one-way heat release part releases heat for the cold end, and the one-way heat absorption part supplies heat for the hot end; an intelligent temperature measuring device is pre-embedded into concrete to detect the internal temperature of the concrete in real time, a device power source is generated according to the thermoelectric effect principle, a large amount of heat energy in the concrete is converted into electric energy, and after the internal temperature of the concrete is balanced, the device can automatically stop; the concrete temperature detected in real time can be monitored in real time by acquiring data through a background.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring equipment, and in particular to a passive embedded sound wave collection type concrete temperature measuring device and method. Background Art

[0002] In construction projects, the traditional method of measuring the temperature of large-volume concrete usually uses a pre-buried temperature measuring wire connected to the host computer for temperature measurement. The entire temperature measurement process requires manual temperature measurement at fixed intervals and recording of the temperature measurement results. Commonly used large-volume concrete temperature measurement devices generally use batteries as the power supply of the device.

[0003] The existing technology has defects: 1. In order to avoid quality problems caused by cracks in large-volume concrete due to excessive temperature differences, the temperature needs to be tested every two hours in the first two days of the curing process. From the 3rd to the 7th day of the curing process, it needs to be tested every 4 hours. Therefore, the entire curing and temperature measurement process requires manual standby 24 hours a day, affecting production efficiency and workers' health. 2. This temperature measurement method cannot monitor the temperature of the concrete in real time. If the abnormal temperature occurs in the undetected time period and is not cooled in time, it will directly affect the quality of the concrete. 3. The battery-powered method may cause the equipment to be unable to perform temperature measurement due to insufficient battery power, thereby affecting the entire curing process of the concrete. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of the present invention to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] Therefore, in order to solve the problem of complicated temperature measurement process of large-volume concrete, the present invention provides a passive embedded acoustic wave collection type concrete temperature measurement device and method. The internal temperature of the concrete is detected in real time by pre-embedding an intelligent temperature measuring device into the concrete. The power supply of the device is generated by the principle of 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 is balanced, the device will automatically stop. The real-time detected concrete temperature can achieve real-time monitoring purposes by obtaining data through the background, without the need for workers to go to the site for on-site temperature measurement operations.

[0006] In order to solve the above technical problems, the present invention provides a passive embedded acoustic wave collection type concrete temperature measurement device and method, which adopts the following technical scheme: comprising: a shell; a temperature sensor fittedly mounted on the shell; a control unit, used to receive the temperature measurement data of the temperature sensor and send 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 connects the control unit and the temperature sensor through a wire; and also includes a unidirectional heat dissipating component for dissipating heat for the cold end and a unidirectional heat absorbing component 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 series alternately to form a power supply loop, and the power supply end of the power supply loop is connected to a wire connected to the control unit and the temperature sensor.

[0008] Optionally, there are multiple temperature sensors evenly arranged on the side wall of the housing.

[0009] Optionally, the one-way heat release component has multiple components radially connected to the cold end side wall, and the one-way heat absorption component has multiple components radially connected to the hot end side wall.

[0010] Optionally, the one-way heat release component includes a first thermally conductive strip and a first sleeve, the first sleeve is composed of a first thermally conductive sleeve and a first thermal insulation sleeve, a first movable thermally conductive strip is arranged between the first thermally conductive sleeve and the inside of the first thermal insulation sleeve, one end of the first thermally conductive strip is connected to the cold end, a first contact breakpoint area is arranged between the other end of the first thermally conductive strip extending into the first thermally conductive sleeve and one end of the first movable thermally conductive strip, and a first thermal expansion and contraction gas area is arranged between one end of the first movable thermally conductive strip away from the first contact breakpoint area and the first thermal insulation sleeve.

[0011] Optionally, the one-way heat absorption element includes a second thermally conductive strip and a second sleeve, the second sleeve is composed of a second thermally insulating sleeve and a second thermally conductive sleeve, a second movable thermally conductive strip is arranged between the second thermally conductive sleeve and the second thermally insulating sleeve, one end of the second thermally conductive strip is connected to the hot end, a second contact breakpoint area is arranged between the other end of the second thermally conductive strip extending into the second thermally insulating sleeve and one end of the second movable thermally conductive strip, and a second thermal expansion and contraction gas area is arranged between one end of the second movable thermally conductive strip away from the second contact breakpoint area and the second thermally conductive sleeve.

[0012] Optionally, the control unit is equipped with a sound wave transmitting module for converting the received temperature sensor temperature measurement data into sound waves and transmitting them to a background receiving device, which then acquires and converts the sound waves into temperature values.

[0013] A temperature measurement method based on the above-mentioned passive embedded acoustic wave collection type concrete temperature measuring device comprises: arranging the temperature measuring device in concrete in a pre-embedded manner; generating a temperature difference through the existence of a unidirectional heat release component at the cold end and a unidirectional heat absorption component at the hot end, and the placed P-type semiconductor and N-type semiconductor will migrate due to the temperature difference, generate a thermoelectric effect, form a current in the loop, and supply power to a control unit and a temperature sensor; the control unit receives the temperature measurement data of the temperature sensor in real time, and converts it into sound waves and transmits it to a background receiving device, which obtains and converts it into a temperature value through the background receiving device; after the heat release phenomenon of the concrete ends, the temperature measuring device automatically stops because the temperature difference between the cold end and the hot end is too small to supply power to the control unit and the temperature sensor.

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

[0015] 1. The present invention detects the internal temperature of concrete in real time by pre-embedding a temperature measuring device into concrete. The power supply of the device is generated by the principle of thermoelectric effect, which converts a large amount of heat energy in the concrete into electrical energy without external power supply or battery power supply. When the internal temperature of the concrete is balanced, the device will automatically stop to realize waste heat recovery, convert waste heat into electrical energy, and improve 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 background receiving device in the form of sound waves via the sound wave transmitting module, monitors the value of the on-site temperature sensor in real time, and can check the concrete temperature of the measuring point at any time. There is no need for workers to go to the site for on-site temperature measurement, which reduces manpower loss and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

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

[0019] Figure 2 For the present invention Figure 1 Schematic diagram of the internal structure;

[0020] Figure 3 It is a schematic diagram of the structure of the one-way heat release element of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the one-way heat absorption element of the present invention.

[0022] Explanation of the reference numerals: 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 release component; 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 breakpoint area; 905. first thermal expansion and contraction gas area; 10. one-way heat absorption component; 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 breakpoint area; 1005. second thermal expansion and contraction gas area. DETAILED DESCRIPTION

[0023] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Thermoelectric effect is a conversion process that generates voltage from temperature difference, and vice versa. When there is a temperature difference between the two ends of a thermoelectric device, a voltage is generated, or when a voltage is applied to it, a temperature difference is also generated. 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. Thermoelectric devices make temperature control very easy.

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

[0028] Embodiment 1

[0029] Reference Figure 1-Figure 2 The present invention discloses a passive embedded acoustic wave collection type concrete temperature measuring device, comprising: a housing 1 for protecting various components inside the device; a temperature sensor 2 fitted and mounted on the housing 1 for real-time detection of the internal temperature of a large volume of concrete; a control unit 3 for receiving the temperature measurement data of the temperature sensor 2 and sending it to a background receiving device in the form of acoustic waves; a power supply group, comprising a hot end 5 and a cold end 4 placed at both ends of the inner cavity of the housing 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, the P-type semiconductor 6 and the N-type semiconductor 7 are important components for generating thermoelectric effect; the power supply group connects the control unit 3 and the temperature sensor 2 through a wire 8, and is used to supply power to the control unit 3 and the temperature sensor 2; and also comprises a one-way heat release component 9 for releasing heat to the cold end 4 and a one-way heat absorption component 10 for supplying heat to the hot end 5, the one-way heat release component 9 releases heat to the cold end 4 to increase the temperature difference between the hot and cold ends; the one-way heat absorption component 10 supplies 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 series alternately to form a power supply loop, and the power supply end of the power supply loop is connected to a wire 8 connected to the control unit 3 and the temperature sensor 2.

[0031] In this embodiment, there are multiple temperature sensors 2 evenly arranged on the side wall of the housing 1, which can detect temperature data of multiple positions of the concrete.

[0032] In this embodiment, the one-way heat release components 9 have multiple ones radially connected to the side wall of the cold end 4, and the one-way heat absorption components 10 have multiple ones radially connected to the side wall of the hot end 5. The arrangement of multiple one-way heat release components 9 can improve the heat release effect of the cold end 4; the arrangement of multiple one-way heat absorption components 10 can improve the heating effect of the hot end 5.

[0033] Reference Figure 3 In detail, in the present embodiment, the one-way heat release member 9 comprises 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 arranged between 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 breakpoint area 904 is arranged 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 arranged between one end of the first movable heat-conducting strip 903 away from the first contact breakpoint area 904 and the first heat-insulating sleeve 902b.

[0034] Reference Figure 4 In detail, in this embodiment, the one-way heat absorption element 10 includes a second thermally conductive strip 1001 and a second sleeve 1002, the second sleeve 1002 is composed of a second thermally insulating sleeve 1002a and a second thermally conductive sleeve 1002b, a second movable thermally conductive strip 1003 is arranged between the second thermally conductive sleeve 1002b and the second thermally insulating sleeve 1002a, one end of the second thermally conductive strip 1001 is connected to the hot end 5, a second contact breakpoint area 1004 is arranged between the other end of the second thermally conductive strip 1001 extending into the second thermally insulating sleeve 1002a and one end of the second movable thermally conductive strip 1003, and a second thermal expansion and contraction gas area 1005 is arranged between one end of the second movable thermally conductive strip 1003 away from the second contact breakpoint area 1004 and the second thermally conductive sleeve 1002b.

[0035] The difference between the one-way heat release element 9 and the one-way heat absorption element 10 lies in the different connection positions of the first sleeve 902, the second sleeve 1002 and the first heat conductive strip 901. For example, in the one-way heat absorption element 10, the temperature of the second heat conductive 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 conductive strip 1003 contacts the second heat conductive strip 1001, and the heat at the second heat conductive sleeve 1002b moves toward the second heat conductive strip 1001, and the heat moves from a distance toward the hot end 5 to achieve heat absorption. The one-way heat release element 9 is based on the same principle as the one-way heat absorption element 10, and the heat moves from the cold end 4 to a distance to achieve heat release.

[0036] Embodiment 2

[0037] Based on the same concept as the first embodiment, a temperature measurement method based on the passive embedded acoustic wave collection type concrete temperature measurement device is also included, including:

[0038] The entire temperature measuring device is arranged in a pre-embedded manner, and the temperature sensor 2 is attached to the protective housing to measure the temperature;

[0039] During the temperature measurement of the mass concrete, the temperature difference is generated by the one-way heat release component 9 at the cold end 4 and the one-way heat absorption component 10 at the hot end 5. Due to the temperature difference, the free electrons and holes of the P-type semiconductor 6 and the N-type semiconductor 7 placed therebetween migrate, generating a thermoelectric effect, forming a current in the loop, and supplying power to the control unit 3 and the temperature sensor 2.

[0040] The control unit 3 receives the temperature measurement data of the temperature sensor 2 in real time through the internal sound wave transmitting module, and converts it into sound waves and transmits it to the background receiving device, which obtains and converts it into a temperature value.

[0041] After the heat release of the concrete ends, the temperatures of various points inside are basically the same, and 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 protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A passive embedded acoustic wave collection type concrete temperature measuring device, characterized in that: include: Housing (1); A temperature sensor (2) mounted on the housing (1); A control unit (3) is used to receive temperature measurement data from the temperature sensor (2) and send the data to a background receiving device in the form of sound waves; A power supply group, comprising a hot end (5) and a cold end (4) disposed at two 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 group is connected to the control unit (3) and the temperature sensor (2) via a wire (8); It also includes a one-way heat release component (9) for releasing heat to the cold end (4) and a one-way heat absorption component (10) for supplying heat to the hot end (5).

2. A passive embedded acoustic wave collection 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) are connected in series in an alternating manner to form a power supply loop, and the power supply end of the power supply loop is connected to a wire (8) connected to the control unit (3) and the temperature sensor (2).

3. The passive embedded acoustic wave collection type concrete temperature measuring device according to claim 1 is characterized in that: The temperature sensors (2) are multiple and are evenly arranged on the side wall of the housing (1).

4. The passive embedded acoustic wave collection type concrete temperature measuring device according to claim 1 is characterized in that: The one-way heat-releasing component (9) has a plurality of components connected radially to the side wall of the cold end (4), and the one-way heat-absorbing component (10) has a plurality of components connected radially to the side wall of the hot end (5).

5. A passive embedded acoustic wave collection type concrete temperature measuring device according to claim 4, characterized in that: The one-way heat release element (9) comprises 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 arranged between 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 breakpoint area (904) is arranged 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); and a first thermal expansion and cold contraction gas area (905) is arranged between one end of the first movable heat-conducting strip (903) away from the first contact breakpoint area (904) and the first heat-insulating sleeve (902b).

6. The passive embedded acoustic wave collection type concrete temperature measuring device according to claim 4, characterized in that: The one-way heat absorbing element (10) comprises 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 arranged between the inside 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 breakpoint area (1004) is arranged 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); and a second thermal expansion and contraction gas area (1005) is arranged between one end of the second movable heat conducting strip (1003) away from the second contact breakpoint area (1004) and the second heat conducting sleeve (1002b).

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

8. A temperature measurement method based on the passive embedded acoustic wave collection type concrete temperature measurement device according to any one of claims 1 to 7, characterized in that: include: The temperature measuring device is arranged in the concrete in a pre-embedded manner; A temperature difference is generated by the presence of a one-way heat release component (9) at the cold end (4) and a one-way heat absorption component (10) at the hot end (5). Due to the temperature difference, free electrons and holes in the placed P-type semiconductor (6) and N-type semiconductor (7) migrate to generate a thermoelectric effect, forming a current in the loop to supply power to the control unit (3) and the temperature sensor (2); The control unit (3) receives the temperature measurement data of the temperature sensor (2) in real time, and converts it into sound waves and transmits it to the background receiving device, which then obtains and converts it into a temperature value. After the heat release 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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