Ultraviolet flame sensor with temperature measurement function

Abstract

The embodiment of the utility model provides an ultraviolet flame sensor with a temperature measurement function. The ultraviolet flame sensor comprises a support; the shell is fixedly connected with the bracket and is used for protecting internal elements; the ultraviolet tube is arranged in the shell and is used for detecting ultraviolet rays with the wavelength range of 185-260nm; the detection control circuit is electrically connected with the ultraviolet tube and is used for converting the ultraviolet signal into an electrical signal and processing the electrical signal; the sealing rubber ring is filled in the connecting part of the shell and is used for enhancing the waterproof and dustproof performance; the sealing cover is fixed at the top end of the shell and is connected with the sealing rubber ring; the waterproof aviation socket is arranged on the shell and is used for transmitting electric signals to the outside; and the quartz glass cover covers the front end of the shell and is used for protecting the ultraviolet tube, and ultraviolet rays with the wavelength of 185-260nm can penetrate through the quartz glass cover. According to the scheme of the embodiment of the invention, false alarms caused by environmental problems can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sensors, in particular to an ultraviolet flame sensor with temperature measurement function. BACKGROUND

[0002] The ultraviolet flame sensor with temperature measurement function is a device that can identify flames by detecting ultraviolet radiation and simultaneously measure related temperature parameters, widely used in fire alarm and industrial safety monitoring fields. However, such sensors may have false alarm problems due to environmental factors, such as ultraviolet light in sunlight, electric welding arc light or other artificial light sources, which may be misjudged as flame signals, thereby causing false alarms. How to effectively avoid the interference of these environmental factors on the judgment of the sensor is a technical difficulty worth paying attention to. SUMMARY

[0003] Therefore, the present application provides an ultraviolet flame sensor with temperature measurement function to at least partially solve the problems in the prior art.

[0004] The ultraviolet flame sensor with temperature measurement function of the present application comprises:

[0005] a bracket;

[0006] a housing fixedly connected with the bracket for protecting internal elements;

[0007] an ultraviolet tube arranged in the housing for detecting ultraviolet light with a wavelength range of 185-260 nm;

[0008] a detection control circuit electrically connected with the ultraviolet tube for converting ultraviolet signals into electrical signals and processing them;

[0009] a sealing rubber ring filled in the connecting part of the housing for enhancing waterproof and dustproof performance;

[0010] a sealing cover fixed to the top end of the housing and connected with the sealing rubber ring;

[0011] a waterproof aviation socket installed on the housing for transmitting electrical signals externally;

[0012] a quartz glass cover covering the front end of the housing for protecting the ultraviolet tube and being able to transmit ultraviolet light with a wavelength of 185-260 nm;

[0013] a temperature detection circuit arranged in the housing and electrically connected with the detection control circuit for monitoring the temperature of the environment.

[0014] In one specific embodiment, the ultraviolet tube improves sensitivity and field of view range through a plate cathode design.

[0015] In one embodiment, the bracket can adjust the installation angle to adapt the sensor to wall-mounted or ceiling-mounted installation.

[0016] In one embodiment, the size of the shell is 5*56*40mm in length* width* height, and the weight is not more than 200g.

[0017] In one embodiment, the ultraviolet tube does not respond to visible light and infrared light with a wavelength greater than 300nm, avoiding the interference of external strong light or light.

[0018] In one embodiment, the temperature detection circuit is integrated in the detection control circuit and outputs an alarm signal and data through an industrial standard bus protocol.

[0019] In one embodiment, the waterproof aviation socket is connected to the shell through sealing glue.

[0020] In one embodiment, the sensor is installed at a distance of 5-4m from the ground, and the viewing angle range is more than 120 degrees.

[0021] The ultraviolet flame sensor with temperature measurement function provided by the embodiments of the present disclosure comprises a bracket, a shell fixedly connected to the bracket for protecting internal elements, an ultraviolet tube arranged in the shell for detecting ultraviolet light with a wavelength range of 185-260nm, a detection control circuit electrically connected to the ultraviolet tube for converting and processing ultraviolet signals into electrical signals, a sealing glue ring filled in the connecting part of the shell for enhancing waterproof and dustproof performance, a sealing cover fixed to the top end of the shell and connected to the sealing glue ring, a waterproof aviation socket installed on the shell for transmitting electrical signals externally, a quartz glass cover covering the front end of the shell for protecting the ultraviolet tube and being capable of transmitting ultraviolet light with a wavelength of 185-260nm, and a temperature detection circuit arranged in the shell and electrically connected to the detection control circuit for monitoring the temperature of the environment. Through the scheme of the embodiments of the present disclosure, how to avoid false alarms caused by environmental problems can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In the drawings, the same reference numbers in the several drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments in accordance with the present disclosure and should not be considered limiting the scope of the present disclosure.

[0023] Figure 1 is a structural schematic diagram of the ultraviolet flame sensor with temperature measurement function according to the present disclosure;

[0024] Figure 2Is the structure diagram of the connection relationship between the ultraviolet tube and the quartz glass cover in the ultraviolet flame sensor with temperature measurement function of the utility model.

[0025] Figure 3 Is the internal structure diagram of the shell in the ultraviolet flame sensor with temperature measurement function of the utility model.

[0026] Figure 4 Is the structure diagram of the waterproof aviation socket in the ultraviolet flame sensor with temperature measurement function of the utility model.

[0027] In the drawing: 1, support; 2, shell; 3, ultraviolet tube; 4, detection control circuit; 5, sealing rubber ring; 6, sealing cover; 7, waterproof aviation socket; 8, quartz glass cover; 9, temperature detection circuit DETAILED DESCRIPTION

[0028] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can realize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0029] As Figures 1-4 Indicated, the ultraviolet flame sensor with temperature measurement function of the application includes an overall structure composed of multiple components, wherein the design of each component aims to realize accurate detection of flame and real-time monitoring of ambient temperature, while meeting the technical requirements of protection and maintainability.

[0030] The flame sensor has a component for mounting and adjusting angle, through which flexible adjustment of the flame sensor in actual application scenarios can be realized. Specifically, the component can be fixed in a specified position through threads or mechanical clamping slots, while allowing free rotation or inclination within a certain range to ensure the best viewing angle for flame detection.

[0031] The shell 2 as an important part of protecting internal elements is directly fixedly connected with the above-mentioned angle adjusting component, and its main role is to provide reliable physical protection. The shell 2 adopts a protection level design conforming to the IP67 standard, which can work normally under the condition of 1 meter long-time immersion underwater or dust prevention. For example, such protection level can form a seamless shell 2 surface through a precision injection molding process, and is realized in cooperation with a high-strength plastic material.

[0032] The UV tube 3 is arranged inside the housing 2, and is specifically used to detect the UV light emitted by the flame in the wavelength range of 185-260 nm. The selection of this band is derived from the unique energy release characteristics of UV light in the flame. In order to improve the detection accuracy, the UV tube 3 can select high-sensitivity photomultiplier tube technology or metal oxide semiconductor-based detection devices, which can significantly improve the accuracy and efficiency of UV signal capture.

[0033] The detection control circuit 4 is connected to the UV tube 3 through an electrical connection, responsible for converting the captured UV signal into an electrical signal for output and processing. Such circuits are usually composed of analog-to-digital converters (ADC), low-noise amplifiers, and data processing modules, for example, using embedded processors to quickly analyze the received signals to determine whether there is a real flame.

[0034] In order to further improve the overall sealing performance, the sensor uses a flexible material filled in the connection parts of each component. These materials have waterproof and dustproof functions, and can customize the softness and hardness parameters as needed to achieve better assembly compatibility.

[0035] At the top position, the housing 2 is also provided with detachable fixing devices, mainly used for disassembly to access the internal detection devices during maintenance operations. This component is connected to the housing 2 by screw fastening or other quick release mechanisms, and is closely attached to the flexible material mentioned earlier.

[0036] The transmission signal uses a special aviation socket installed on the housing 2, which also achieves IP67 level protection performance. It can ensure the reliability of signal transmission even in harsh environments through the design of metal contact pins and high-quality insulators.

[0037] The quartz glass cover 8 is covered on the front end of the housing 2, which is used to form an additional physical barrier protection for the embedded UV tube 3. At the same time, its material is specially selected to ensure the effective transmission of 185-260 nm UV light, for example, using low-loss, chemically stable industrial-grade quartz glass materials to build this cover.

[0038] Finally, the sensor is provided with a temperature detection subsystem that is integrated with the main detection control circuit 4 through an electrical interface. The subsystem can monitor the surrounding temperature environment with an accuracy of 0.1°C. Its implementation can use high-precision digital temperature sensor chips and their attached compensation circuit components to ensure the consistency and repeatability of measurement results.

[0039] To avoid false alarms caused by environmental problems, the ultraviolet tube 3 first focuses on detecting ultraviolet rays in a specific short-wavelength range (185-260 nm), because the ultraviolet rays generated by flames are concentrated in this interval, and are different from the long-wavelength ultraviolet radiation emitted by daily light or non-flame sources, thus greatly excluding the interference of common light sources such as sunlight on the device. At the same time, the integrated temperature detection subsystem continuously monitors environmental temperature fluctuations, which enables the main detection system to more accurately distinguish between possible disturbances caused by background thermal changes and actual flame activity in complex working conditions, for example, in a temperature-varying environment, the threshold judgment condition can be recalibrated in combination with temperature control information, thereby reducing the probability of false positives and missed detections. Therefore, by optimizing the overall discrimination logic through the dual-signal linkage feedback mode, unnecessary false alarms caused by various environmental factors are significantly reduced.

[0040] As shown in Figure 2 In one embodiment, the ultraviolet tube 3 of the ultraviolet flame sensor with temperature measurement function of the present application adopts the principle of metal and gas multiplication photoelectric effect. The ultraviolet tube 3 is installed in the central area inside the shell 2, and uses its high sensitivity to 185-260 nm ultraviolet rays to detect flame signals. At the same time, by replacing the traditional pin or linear electrode with an improved plate cathode structure design, the sensitivity and field range coverage capability are effectively improved, and the ultraviolet signal can be captured more accurately. The plate cathode is uniformly distributed inside the ultraviolet tube 3 and is connected to the external high-voltage circuit to form a complete photoelectron multiplication system, making the output signal stable and reliable.

[0041] Specifically, the core part of the ultraviolet tube 3 includes a working cavity filled with special inert gas, an inner wall coated with a metal reflective layer to optimize light collection efficiency, and a matching anode collection assembly. To realize the multiplication principle, the electron amplification performance is optimized under the joint action of metal and gas. For example, the plate cathode can be arranged near the front and inclined at a certain angle to increase the incident light receiving area, and cooperate with the rear concentrated anode for signal extraction, further enhancing the working capacity. In addition, the entire ultraviolet tube 3 is protected and isolated from external influences by the quartz glass cover 8 at the front end of the shell 2, ensuring the suitability of its operating environment.

[0042] As shown in Figure 1 In one embodiment, the bracket 1 of the ultraviolet flame sensor with temperature measurement function of the present application can be angle-adjusted to adapt to different installation environment requirements. By adjusting the angle of the bracket 1, the entire device can be flexibly set to a wall-mounted or ceiling-mounted installation mode. This structural improvement significantly enhances the applicability of the product in different scenarios. Specifically, the bracket 1 can firmly fix the shell 2 while allowing angle transformation, so that the detection window of the ultraviolet tube 3 can be accurately pointed to the monitored area.

[0043] For example, the bracket 1 and the shell 2 can be connected through a rotary joint or a sliding buckle, so that the bracket 1 can be adjusted to any angle within a certain range and locked to a specified position by a screw or other fasteners. In this connection form, the bracket 1 and the shell 2 can not only maintain sufficient rigid connection to withstand external force, but also meet the user's demand for direction change.

[0044] As shown in Figure 1 In one embodiment, the shell 2 of the ultraviolet flame sensor with temperature measurement function of the present application is designed to have a size of 94.5 x 56 x 40 mm, which can meet the installation requirements in a narrow space, and the overall weight is not more than 200 g, which reduces the requirements for the supporting structure during the fixing and installation or carrying of the sensor. The design of this size also ensures that the internal components are arranged compactly, thereby optimizing the signal transmission path and circuit wiring method, and avoiding electromagnetic interference or signal loss caused by excessive size.

[0045] The specific structure of the shell 2 is composed of multiple parts. The sealing cover 6 is fixed at the top end of the shell 2 for maintenance convenience, and the bottom thereof is connected with the shell 2 through a sealing rubber ring 5 to achieve reliable waterproof and dustproof connection. The temperature detection circuit 9 is arranged inside the shell 2 and electrically connected with the detection control circuit 4. The positions of the two are reasonably planned to ensure accurate collection of environmental temperature data. In addition, the waterproof aviation socket 7 is installed on the side of the shell 2 and undertakes the task of transmitting electrical signals, and forms an integrated protection performance with the shell 2, which meets the IP67 requirement.

[0046] For example, a lightweight material such as aluminum alloy or modified engineering plastic can be selected as the main material of the shell 2 to balance the strength and weight targets. At the same time, the installation position of the internal circuit board is carefully arranged so that the temperature detection circuit 9 is adjacent to the inner wall of the shell 2 without affecting the overall heat dissipation performance, further improving the reliability and adaptability of the product.

[0047] As shown in Figure 2 In one embodiment, the quartz glass cover 8 of the ultraviolet flame sensor with temperature measurement function of the present application is made of high-quality quartz glass material, which has a Mohs hardness of 7 and can withstand a high temperature environment of up to 1100°C. The high-quality quartz glass cover 8 covers the front end region of the shell 2 and mainly plays a role in protecting the internal ultraviolet tube 3. Since this part is directly subjected to high temperature, dust and possible mechanical impact from the external environment, it is crucial to use a quartz glass cover 8 with such characteristics. The high strength and high temperature resistance of the material ensure its stability in harsh environments, while ensuring high transmittance of ultraviolet light with a wavelength of 185-260 nm, meeting the detection requirements of the ultraviolet tube 3.

[0048] Specifically, the high-quality quartz glass cover 8 is directly assembled at the front end opening of the shell 2 after precision machining, and is fastened and sealed by the sealing rubber ring 5 to avoid loosening caused by high temperature or external force. In addition, for example, high-quality quartz glass that has been heat stabilized can be selected during manufacturing to ensure that it has the required hardness and temperature resistance level characteristics. The temperature detection circuit 9 is arranged in the shell 2 and is electrically connected with the detection control circuit 4, and although it works independently, it shares the same protection mechanism. The structure layout formed thereby achieves consistent and coordinated design of multiple functional requirements.

[0049] As shown in Figure 2 In one embodiment, the ultraviolet tube 3 of the ultraviolet flame sensor with temperature measurement function of the present application is not responsive to visible light or infrared light with a wavelength greater than 300 nm by virtue of special material and structural design. This feature enables the ultraviolet tube 3 to avoid external strong light or light interference in complex environmental conditions and diverse light sources, thereby ensuring the accuracy of signal acquisition. The ultraviolet tube 3 is installed inside the shell 2 and is protected by the quartz glass cover 8, which has specific selective transmission performance and only allows ultraviolet light in the wavelength range of 185-260 nm to pass through, further enhancing the selective absorption capability. The detection control circuit 4 is connected with the ultraviolet tube 3 and is responsible for processing the ultraviolet light signal from the flame while shielding unnecessary light wave-induced interference information.

[0050] For example, the core material of the ultraviolet tube 3 can be high-purity borate glass, which is internally doped with a special metal oxide coating to achieve specific wavelength range absorption performance. Specifically, the coating is uniformly coated on the inner surface of the ultraviolet tube 3 during manufacturing, and by strictly controlling the thickness and distribution density, it is ensured that the part with a wavelength greater than 300 nm is completely shielded. This technical implementation is closely matched with the component structure, and during assembly, the ultraviolet tube 3 is firmly placed at the center position of the shell 2 and precisely corresponds to the light path of the quartz glass cover 8, thereby jointly forming the selective response characteristics to the target wavelength.

[0051] As shown in Figure 3 In one embodiment, the detection control circuit 4 of the ultraviolet flame sensor with temperature measurement function of the present application integrates the temperature detection circuit 9 inside. This integrated design enables the sensor to not only achieve flame detection function, but also monitor the temperature information of the surrounding environment in real time. The temperature detection circuit 9 is embedded in the detection control circuit 4 by electrical connection, and the two are closely combined and work cooperatively to ensure the consistency of data processing and output signal. In addition, the temperature detection circuit 9 transmits the alarm signal and temperature-related data to the outside through the industrial standard bus protocol. The industrial standard bus protocol has high stability and compatibility in this application scenario and is suitable for complex industrial field environments.

[0052] Specifically, a microcontroller supporting multi-channel data acquisition can be selected as the core component embedded in the detection and control circuit 4, and functional modules can be integrated within it to meet temperature acquisition requirements. For example, an analog-to-digital converter with an integrated thermistor can be used to achieve temperature sampling. The sampled electrical signal is then transmitted to the processing unit inside the microcontroller, and finally, the data is output via an interface supporting industrial standard bus protocols. This implementation method simplifies the internal wiring of the sensor and improves system reliability.

[0053] like Figure 4 As shown, in one embodiment, the waterproof aviation socket 7 of the ultraviolet flame sensor with temperature measurement function of this application is firmly connected to the housing 2 by sealant, and the waterproof aviation socket 7 forms a reliable waterproof seal for the housing 2. The housing 2 mainly serves to protect the internal components of the sensor and provide a mounting base. The waterproof aviation socket 7 is installed on the housing 2, specifically at the location where electrical signals need to be transmitted, ensuring unimpeded external signal transmission while meeting the IP67 protection level requirements. Furthermore, the waterproof aviation socket 7 is connected to the internal circuitry of the sensor, enabling signal transmission between the sensor and an external controller under electrical connection conditions, supporting a maximum distance of up to 1000m.

[0054] For example, installation can be completed by embedding the waterproof aviation socket 7 into a pre-drilled opening on the side wall of the housing 2, and then filling any gaps between them with appropriate sealant. Structurally, the waterproof aviation socket 7 is made of high-temperature resistant, anti-aging metal or engineering plastic, and its ports include multiple electrical interfaces, which are connected to the detection and control circuit 4 via internal wires to achieve effective signal transmission. In addition, the material and shape of the housing 2 are designed to be compatible with the waterproof aviation socket 7, ensuring reliability after connection and enabling the sensor to operate stably in demanding environments.

[0055] like Figure 2 As shown, in one embodiment, the ultraviolet tube 3 of the ultraviolet flame sensor with temperature measurement function of this application has an optimized electrode structure, thereby significantly improving its resistance to mechanical shock. This capability can reach 10000 m / s 2 This makes its application in complex environments more reliable and stable. The UV tube 3 is installed inside the housing 2 and protected by a quartz glass cover 8. The quartz glass cover 8 not only effectively transmits ultraviolet rays within the required wavelength range (185-260nm), but also forms a barrier for the UV tube 3 to resist external impacts. Since the housing 2 as a whole has an IP67 protection rating, it is not only waterproof and dustproof, but also indirectly improves the durability of the UV tube 3.

[0056] Furthermore, to enhance the strength and shock resistance of the UV tube 3, the electrode structure was redesigned, specifically by improving the electrode shape, reducing vibration transmission paths, and optimizing the connection method to ensure effective cushioning when subjected to impact. For example, asymmetric supports or spring damping are used to distribute external impact energy reasonably throughout the structure, rather than concentrating it on a single component.

[0057] Specifically, electrodes can be manufactured using materials with high elasticity and low coefficient of thermal expansion, and then precisely installed in designated areas and electrically connected to the detection and control circuit 4 to complete signal transmission and processing functions. This ensures that the entire device not only has excellent temperature measurement and flame sensing capabilities, but also maintains normal operation in harsh environments.

[0058] like Figure 1 As shown, in one embodiment, the optimal installation position of the ultraviolet flame sensor with temperature measurement function of this application is within a height range of 3.5 to 4 meters above the ground to ensure that the sensor can accurately capture flame signals within a wide viewing angle. The sensor is designed with a wide viewing angle, exceeding 120 degrees, to adapt to multi-directional monitoring needs in complex application scenarios. By adjusting the position and angle of the bracket 1, the sensor's coverage of the target area can be further optimized, making it adaptable to different installation environments.

[0059] The sensor's overall structure consists of a housing 2 and its internal components. A bracket 1 connects to and secures the housing 2 at a set height and angle. A quartz glass cover 8 is mounted at the front of the housing 2 to protect the ultraviolet tube 3, while a sealing cap 6 enhances overall airtightness at the rear. Sealing rings 5 ​​at the connection points achieve IP67-level waterproof and dustproof performance. Furthermore, the detection and control circuit 4 works in conjunction with the temperature detection circuit 9 to convert and process the ultraviolet signal and acquire real-time ambient temperature data.

[0060] For example, to achieve a wide viewing angle of over 120 degrees, the position of the ultraviolet tube 3 is precisely adjusted and paired with a quartz glass cover 8 with specific optical properties, enabling ultraviolet signals to be captured over a large area. Simultaneously, the design of the bracket 1 allows for flexible changes in direction and height, forming a stable working angle to meet installation requirements, further ensuring the technical realization of the viewing angle coverage capability.

[0061] In actual operation, when this device is in use, the ultraviolet tube 3 detects ultraviolet light emitted by the flame with a wavelength range of 185 to 260 nm and transmits the signal to the detection and control circuit 4. The detection and control circuit 4 converts and processes the received ultraviolet signal to generate an electrical signal, which is then output to the outside through the waterproof aviation socket 7 to achieve effective monitoring of the flame. At the same time, the temperature detection circuit 9 monitors the ambient temperature in real time and transmits the temperature data to the detection and control circuit 4 for analysis and processing to achieve accurate temperature monitoring. The quartz glass cover 8 protects the ultraviolet tube 3 from external damage while allowing ultraviolet light to pass through smoothly. The outer shell 2, together with the sealing ring 5 and the sealing cover 6, provides a high level of protection to ensure the safety and stability of the internal components.

[0062] This document describes several embodiments of the present invention; however, for the sake of brevity, the descriptions of the embodiments are not exhaustive, and identical or similar features or parts between the embodiments may be omitted. In this document, "one embodiment," "some embodiments," "example," "specific example," or "some examples" refers to embodiments applicable to at least one, but not all, of the present invention. The above terms do not necessarily refer to the same embodiments or examples. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of the different embodiments or examples.

[0063] The exemplary systems and methods of the present invention have been specifically shown and described with reference to the above embodiments, which are merely examples of the best mode for implementing the systems and methods. Those skilled in the art will understand that various changes can be made to the embodiments of the systems and methods described herein without departing from the spirit and scope of the invention as defined in the appended claims when implementing the systems and / or methods.

Claims

1. An ultraviolet flame sensor with temperature measurement function, characterized in that, The utility model relates to a kind of sensor, including: Support (1); Shell (2), with the support (1) fixed connection, for protecting internal element; Ultraviolet tube (3) is arranged in shell (2), for detecting the ultraviolet light of wavelength range 185~260nm; Detection control circuit (4) is electrically connected with the ultraviolet tube (3), for converting ultraviolet signal into electrical signal and processing; Sealing rubber ring (5) is filled in the connecting portion of shell (2), for enhancing waterproof, dustproof performance; Sealing cover (6) is fixed in the top of shell (2) and is connected with sealing rubber ring (5); Waterproof aviation socket (7) is installed on shell (2), for transmitting electrical signal to outside; Quartz glass cover (8) is covered in the front end of shell (2), for protecting ultraviolet tube (3), and can pass through 185~260nm wavelength ultraviolet light; Temperature detection circuit (9) is arranged in shell (2) and is electrically connected with detection control circuit (4), for monitoring the temperature of environment.

2. The ultraviolet flame sensor with temperature measurement function according to claim 1, characterized in that: The ultraviolet tube (3) improves sensitivity and field of view range through plate cathode design.

3. The ultraviolet flame sensor with temperature measurement function according to claim 1, characterized in that: The support (1) can adjust installation angle, so that sensor is suitable for wall-mounted or ceiling-mounted installation.

4. The ultraviolet flame sensor with temperature measurement function according to claim 1, characterized in that: The size of shell (2) is long x wide x high: 94.5 x 56 x 40 mm, and the weight is not more than 200 g.

5. The ultraviolet flame sensor with temperature measurement function according to claim 1, characterized in that: The ultraviolet tube (3) is not responsive to visible light and infrared light with wavelength greater than 300 nm, avoiding the interference of external strong light or light.

6. The ultraviolet flame sensor with temperature measurement function according to claim 1, characterized in that: The temperature detection circuit (9) is integrated in the detection control circuit (4), and outputs alarm signal and data through industry standard bus protocol.

7. The ultraviolet flame sensor with temperature measurement function according to claim 1, characterized in that: The waterproof aviation socket (7) is connected with shell (2) through sealing glue.

8. The ultraviolet flame sensor with temperature measurement function according to claim 1, characterized in that: The sensor is installed at 3.5~4m from ground, and the angle of view is more than 120 degrees.

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