Infrared thermal image acquisition device adopting Wi-Fi wireless communication

Abstract

The utility model discloses an infrared thermal image acquisition device adopting Wi-Fi wireless communication, which comprises a shell, a visible light lens arranged at one end of the shell, and an infrared lens unit arranged in parallel with the visible light lens, the central processing unit arranged in the shell is connected with a visible light lens, an infrared lens unit, a communication unit, a data storage unit, an electric energy management unit and a charging management unit, the communication unit is connected with an antenna, and the electric energy management unit and the charging management unit are both connected to a battery. The battery is used for supplying power to the visible light lens, the infrared lens unit, the central processing unit, the communication unit, the data storage unit and the electric energy management unit. According to the utility model, through cooperation with a device with a Wi-Fi communication function, wireless transmission of a measurement result of a temperature field on the surface of an object can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring the surface temperature field of an object, and in particular relates to an infrared thermal image acquisition device adopting Wi-Fi wireless communication. Background Art

[0002] Infrared thermal imaging technology can detect infrared radiation on the surface of an object, convert the temperature distribution image of the target object into a video image, and reflect the distribution of the temperature field on the surface of the object. Infrared thermal imagers can be used for the detection and evaluation of material defects, building energy-saving evaluation, equipment status thermal diagnosis, production process monitoring, automatic testing, disaster reduction and prevention, and many other aspects. Because it does not need to contact the object being measured during use, it can maintain a sufficient safe distance from the high-temperature object being measured.

[0003] Existing infrared thermal imagers generally have two application modes: fixed installation online monitoring and handheld independent detection instruments.

[0004] Fixed-mounted infrared thermal imagers generally do not have a screen and can be seen as an infrared thermal image acquisition front end. They require power supply cables, signal cables, and back-end power supply, control, storage, and analysis devices. They can take and store infrared thermal images of the monitored object at regular intervals according to control commands, and are suitable for use in scenarios with online monitoring needs.

[0005] Handheld instruments generally have a color display screen with a resolution of 640*480 or smaller, and the inspector can directly observe the infrared thermal image of the object being tested on the screen. The general usage steps are: the inspector holds the infrared thermal imager, sets the infrared emissivity according to the main material composition of the object being tested before starting the test, turns on the thermal imager lens, and points the infrared thermal imager at the object being tested. The infrared thermal image of the temperature field on the surface of the object being tested will be displayed on the screen. After the inspector confirms, the thermal image will be stored in the thermal imager. After completing a test and returning to the laboratory, the infrared thermal image stored in the infrared thermal imager can be transferred to the PC using a data cable, and the infrared thermal image can be analyzed using the analysis software in the PC. This method is suitable for use in scenarios where there is no real-time monitoring demand and is used for regular testing.

[0006] If the temperature field of an object needs to be tested more frequently at a production site, the fixed installation method requires not only the arrangement of fixed fixtures, but also the pulling of signal cables and power cables. In industrial sites with many equipment, complex pipelines, and personnel flow, peripheral auxiliary facilities such as isolation, fences, and temporary cable trays are also required. The implementation cost is high, the workload is large, and the cost performance is extremely low. If it is done manually, the inspectors need to frequently go to the site to measure with infrared thermal imagers, which increases the workload of the inspectors and the risk of exposure to high-temperature equipment on site. Utility Model Content

[0007] To solve the deficiencies of the above-mentioned existing technologies, the purpose of the present utility model is to provide an infrared thermal imaging acquisition device using Wi-Fi wireless communication. By utilizing infrared thermal imaging and Wi-Fi wireless communication, components such as the acquisition, storage, wireless transmission, and power management of the object surface temperature field are integrated. Cooperating with a handheld device with Wi-Fi communication function or an on-site Wi-Fi wireless network, the acquisition, storage, and wireless transmission of the infrared thermal image of the object surface can be realized.

[0008] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0009] An infrared thermal imaging acquisition device using Wi-Fi wireless communication includes a housing, a visible light lens arranged at one end of the housing, an infrared lens unit arranged parallel to the visible light lens, and a central processing unit arranged inside the housing is connected to the visible light lens, the infrared lens unit, a communication unit, a data storage unit, a power management unit, and a charging management unit. The communication unit is connected to an antenna. The power management unit and the charging management unit are both connected to a battery, and the battery is used to supply power to the visible light lens, the infrared lens unit, the central processing unit, the communication unit, the data storage unit, and the power management unit.

[0010] A further improvement of the present utility model is that the device is held by hand or fixed with a fixture to align with the object to be measured for measuring the object surface temperature field.

[0011] A further improvement of the present utility model is that the central processing unit is connected to the visible light lens, the infrared lens unit, the communication unit, the data storage unit, the power management unit, and the charging management unit through a data and control bidirectional bus.

[0012] A further improvement of the present utility model is that the power management unit is connected to the battery through a one-way control bus, the charging management unit is connected to the battery through a charging cable, and the battery is connected to and supplies power to the visible light lens, the infrared lens unit, the central processing unit, the communication unit, the data storage unit, and the power management unit through a power supply bus.

[0013] A further improvement of the present utility model is that the visible light lens adopts an 8-megapixel CMOS sensor.

[0014] A further improvement of the present utility model is that the infrared lens unit adopts a CCD sensor with a resolution of 640X480.

[0015] A further improvement of the present utility model is that the central processing unit is an FM33LG023 chip, a 32-bit ARM microcontroller, with a 32-pin QFN package and a low-power technology platform with a kernel of ARM Cortex-M0.

[0016] A further improvement of the present utility model lies in that the communication unit is a two-way transceiver chip supporting the Wi-Fi communication protocol, with the model number MT7601U, 40-pin QFN package, and supporting the IEEE 802.11b / g / n standard in the 2.4GHz ISM band.

[0017] A further improvement of the present utility model lies in that the data storage unit is a GDP1BFLM-CB chip, DDR3L-1866, with a capacity of 256MB; the power management unit is an NCP699, using a TSOP-5 package; the charging management unit is an STC4054GR chip, using a TSOT23-5L package.

[0018] A further improvement of the present utility model lies in that the shape of the outer shell is a cylinder with a rounded rectangular cross-section, with a carbon fiber bracket inside, made of plastic and covered with black soft rubber on the outside, using a wireless charging method, meeting the IP66 requirements.

[0019] Compared with the prior art, the present utility model has at least the following beneficial technical effects:

[0020] An infrared thermal imaging acquisition device using Wi-Fi wireless communication provided by the present utility model has universality and flexibility in terms of measurement data transmission. Different from the current fixed installation and the use of data cables for handheld instruments to transmit data, the present utility model adopts a general Wi-Fi communication mode, without the need to specifically form a network. If there is a Wi-Fi hotspot in the industrial site, it can be directly connected to the Wi-Fi network of the industrial site and directly send the infrared thermal image of the object surface and its corresponding visible light image to the server in the network as an online infrared monitoring front end; if there is no Wi-Fi hotspot in the industrial site, the point-to-point Wi-Fi method can be used to directly send the measurement data to a handheld or fixed data acquisition terminal.

[0021] Furthermore, the present utility model increases and improves the flexibility of the surface temperature field detection of the device. Install temporarily as needed for measurement, and realize data transmission with the data acquisition terminal through Wi-Fi. At this time, the usage method is similar to that of a handheld infrared thermal imager, except that there is no need to use a data cable for backhaul; when temporarily strengthening the temperature field detection of a certain device, it can be fixedly installed using a fixture according to the detection requirements, and the detection personnel regularly use a handheld data acquisition terminal to collect data, reducing the labor intensity of personnel and improving the measurement efficiency; if long-term monitoring is required, a temporary Wi-Fi network can be built according to the on-site situation, and the acquisition results can be directly sent through the network. When long-term monitoring is not required, the temporary Wi-Fi network can be removed and used where needed.

[0022] Furthermore, the utility model has high compatibility. The communication protocol adopted is public, and the utility model has no specific designation for subsequent communication terminal devices. Currently, wireless transceiver devices that support the Wi-Fi protocol on the market can all obtain the infrared thermal image and visible light image data of the utility model.

[0023] In summary, the utility model constructs chips such as acquisition, processing, communication, electric energy, and power supply in a complete instrument, integrates the infrared thermal image acquisition, storage, and transmission links, and supports automatic infrared thermal image monitoring and manual detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of an infrared thermal image acquisition device using Wi-Fi wireless communication of the utility model.

[0025] Description of the reference numerals:

[0026] 1, visible light lens; 2, infrared lens unit; 3, central processing unit; 4, communication unit; 5, data storage unit; 6, power management unit; 7, charging management unit; 8, battery; 9, housing; 10, data and control two-way bus; 11, charging cable; 12, one-way control bus; 13, power supply bus; 14, antenna. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0028] In the utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0030] It should also be understood that the terms used in the specification of the present utility model are merely for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in the specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0031] It should be further understood that the term "and / or" used in the specification of the present utility model and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0032] Structural schematic diagrams according to the disclosed embodiments of the present utility model are shown in the drawings. These figures are not drawn to scale, where for the purpose of clear expression, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures and their relative sizes and positional relationships are merely exemplary, and may actually deviate due to manufacturing tolerances or technical limitations, and those skilled in the art can additionally design regions / layers with different shapes, sizes and relative positions according to actual needs.

[0033] The embodiments of the present utility model will be described in detail below with reference to the drawings.

[0034] Embodiment 1

[0035] As Figure 1 shown, the present embodiment provides an outer shell 9, a visible light lens 1 arranged at one end of the outer shell 9, an infrared lens unit 2 arranged in parallel with the visible light lens 1, and a central processing unit 3 arranged inside the outer shell 9 is connected to the visible light lens 1, the infrared lens unit 2, a communication unit 4, a data storage unit 5, a power management unit 6 and a charging management unit 7. The communication unit 4 is connected to an antenna 14, and both the power management unit 6 and the charging management unit 7 are connected to a battery 8. The battery 8 is used to supply power to the visible light lens 1, the infrared lens unit 2, the central processing unit 3, the communication unit 4, the data storage unit 5 and the power management unit 6.

[0036] As a preferred embodiment of the present utility model, the central processing unit 3 is connected to the visible light lens 1, the infrared lens unit 2, the communication unit 4, the data storage unit 5, the power management unit 6, and the charging management unit 7 through the data and control bidirectional bus 10.

[0037] As a preferred embodiment of the present utility model, the power management unit 6 is connected to the battery 8 through the unidirectional control bus 12, the charging management unit 7 is connected to the battery 8 through the charging line 11, and the battery 8 is connected to and supplies power to the visible light lens 1, the infrared lens unit 2, the central processing unit 3, the communication unit 4, the data storage unit 5, and the power management unit 6 through the power supply bus 13.

[0038] Embodiment 2

[0039] As Figure 1 shown, an infrared thermal imaging acquisition device using Wi-Fi wireless communication provided in this embodiment is used to measure the temperature field on the surface of an object. It is held by hand or fixed with a fixture and aligned with the object to be measured. It includes the housing 9 of the device, the visible light lens 1 arranged inside the housing 9, the infrared lens unit 2 arranged in parallel with the visible light lens 1. The central processing unit 3 is connected to the visible light lens 1, the infrared lens unit 2, the communication unit 4, the data storage unit 5, the power management unit 6, and the charging management unit 7 through the data and control bidirectional bus 10. The antenna 14 is connected to the communication unit 4. The power management unit 6 is connected to the battery 8 through the unidirectional control bus 12, the charging management unit 7 is connected to the battery 8 through the charging line 11, and the battery 8 is connected to and supplies power to the visible light lens 1, the infrared lens unit 2, the central processing unit 3, the communication unit 4, the data storage unit 5, and the power management unit 6 through the power supply bus 13. The visible light lens 1 and the infrared lens unit 2 simultaneously capture the visible light image and the infrared thermal image of the object to be detected, which is convenient for the user to make a comparison.

[0040] As a preferred embodiment of the present utility model, the infrared thermal imaging acquisition device is aligned with the object to be measured by being held by hand or fixed with a fixture to measure the temperature field on the surface of the object.

[0041] As a preferred embodiment of the present utility model, the housing 9 of the infrared thermal imaging acquisition device is a column with a rounded rectangular cross-section. The inside is made of a carbon fiber bracket, and the outside is made of plastic material, covered with black soft rubber, and provided with anti-slip grooves. It has a comfortable grip, is easy to carry, and its overall integrity is easily acceptable to users, meeting the requirements of the IP66 protection level.

[0042] As a preferred embodiment of the present utility model, the infrared thermal imaging acquisition device adopts a wireless charging method.

[0043] As a preferred embodiment of the present utility model, the visible light lens 1 adopts an 8-megapixel CMOS sensor.

[0044] As a preferred embodiment of the present utility model, the infrared lens unit 2 adopts a CCD sensor with a resolution of 640X480.

[0045] As a preferred embodiment of the present utility model, the communication unit 4 is a bidirectional transceiver chip that supports the Wi-Fi communication protocol.

[0046] As a preferred embodiment of the present utility model, the antenna 14 is arranged annularly along the inner edge of the housing 9 to enhance the communication signal.

[0047] As a preferred embodiment of the present utility model, when communicating between a PC and the present utility model, the configuration parameters and commands can be transmitted to the present utility model, and the infrared thermal image and visible light image sent back by the present utility model can be obtained by calling the wlanapi.dll provided by Microsoft Corporation.

[0048] The working principle of the present utility model is as follows:

[0049] The communication unit 4 receives commands in the Wi-Fi network through the antenna 14. After receiving the commands, it wakes up the central processing unit 3 and sends the received commands to the central processing unit 3 through the data and control bidirectional bus 10. The central processing unit 3 analyzes the received commands according to the disclosed communication protocol. If the command is not addressed to this device, it will stop responding and enter the sleep state again. If the command is confirmed to be addressed to this device, it will execute according to the command content. The central processing unit 3 starts the power management unit 6 through the data and control bidirectional bus 10. The power management unit 6 manages the battery 8 through the unidirectional control bus 12. The battery 8 supplies power to the visible light lens 1 and the infrared lens unit 2 through the power supply bus 13. The visible light lens 1 takes a visible light picture, and the infrared lens unit 2 takes an infrared thermal image picture. The central processing unit 3 stamps these two pictures with timestamps and stores them in the data storage unit 5. According to the command of the central processing unit 3, the communication unit 4 sends the infrared thermal image and its corresponding visible light image stored in the data storage unit 5 through the antenna 14 according to the disclosed protocol, completing the acquisition and transmission of the infrared thermal image of the object surface temperature field and its corresponding visible light image.

[0050] The above has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0051] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of the present utility model, and the protection scope of the present utility model cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the present utility model falls within the protection scope of the claims of the present utility model.

Claims

1. An infrared thermal image acquisition device using Wi-Fi wireless communication, characterized in that: The invention comprises a housing (9), a visible light lens (1) arranged at one end of the housing (9), an infrared lens unit (2) arranged in parallel with the visible light lens (1), a central processing unit (3) arranged inside the housing (9) and connected to the visible light lens (1), the infrared lens unit (2), a communication unit (4), a data storage unit (5), a power management unit (6) and a charging management unit (7), the communication unit (4) being connected to an antenna (14), the power management unit (6) and the charging management unit (7) being connected to a battery (8), and the battery (8) being used to supply power to the visible light lens (1), the infrared lens unit (2), the central processing unit (3), the communication unit (4), the data storage unit (5) and the power management unit (6).

2. The infrared thermal image acquisition device using Wi-Fi wireless communication according to claim 1, characterized in that: The device is handheld or fixed with a clamp and aimed at the object to be measured, and is used to measure the surface temperature field of the object.

3. The infrared thermal image acquisition device using Wi-Fi wireless communication according to claim 1, characterized in that: The central processing unit (3) is connected to the visible light lens (1), the infrared lens unit (2), the communication unit (4), the data storage unit (5), the power management unit (6) and the charging management unit (7) via a data and control bidirectional bus (10).

4. The infrared thermal image acquisition device using Wi-Fi wireless communication according to claim 1, characterized in that: The power management unit (6) is connected to the battery (8) via a unidirectional control bus (12), the charging management unit (7) is connected to the battery (8) via a charging line (11), and the battery (8) is connected to the visible light lens (1), the infrared lens unit (2), the central processing unit (3), the communication unit (4), the data storage unit (5) and the power management unit (6) via a power supply bus (13) and supplies power.

5. The infrared thermal image acquisition device using Wi-Fi wireless communication according to claim 1, characterized in that: The visible light lens (1) uses an 8-megapixel CMOS sensor.

6. The infrared thermal image acquisition device using Wi-Fi wireless communication according to claim 1, characterized in that: The infrared lens unit (2) uses a CCD sensor with a resolution of 640X480.

7. The infrared thermal image acquisition device using Wi-Fi wireless communication according to claim 1, characterized in that: The central processing unit (3) is a FM33LG023 chip, a 32-bit ARM microcontroller, a 32-pin QFN package, and a low-power technology platform with an ARM Cortex-M0 core.

8. The infrared thermal image acquisition device using Wi-Fi wireless communication according to claim 1, characterized in that: The communication unit (4) is a bidirectional transceiver chip supporting the Wi-Fi communication protocol, model MT7601U, 40-pin QFN package, supporting the 2.4 GHz ISM frequency band IEEE 802.11b / g / n standard.

9. The infrared thermal image acquisition device using Wi-Fi wireless communication according to claim 1, characterized in that: The data storage unit (5) is a GDP1BFLM-CB chip, DDR3L-1866, with a capacity of 256MB; the power management unit (6) is an NCP699 chip, which adopts a TSOP-5 package; and the charging management unit (7) is an STC4054GR chip, which adopts a TSOT23-5L package.

10. The infrared thermal image acquisition device using Wi-Fi wireless communication according to claim 1, characterized in that: The shape of the housing (9) is a cylindrical body with a rounded rectangular cross section, with a carbon fiber bracket inside and a plastic material and covered with black soft rubber outside. It adopts a wireless charging method and meets IP66 requirements.

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