Dual-redundancy cabin temperature sensor and manufacturing method thereof

Abstract

The invention relates to a dual-redundancy cabin temperature sensor which comprises a base, a support assembly, a framework assembly, a nickel wire, a lug plate assembly, a manganese copper wire, a junction pole, a lead and three binding posts, two grooves are formed in the top of the base, the framework assembly is vertically arranged, the bottom of the framework assembly extends into the grooves of the base to be bonded and fixed, and the nickel wire is arranged in the nickel wire. A nickel wire is wound on the upper portion of the framework assembly, a manganese copper wire is wound on the lower portion of the framework assembly, the lug plate assembly comprises a first lug plate, a second lug plate and a third lug plate, one end of the nickel wire is welded to the first lug plate, the other end of the nickel wire is welded to the second lug plate, and one end of the manganese copper wire is welded to the second lug plate. The other end of the manganese copper wire penetrates through a connecting through hole formed in the framework assembly to be welded to a third lug plate, one end of each lead penetrates through the top of the framework assembly, and in a word, the self-heating device has the advantages of being large in heat capacity, small in self-heating error, high in reliability, long in service life and high in response speed.

Description

Technical Field

[0001] The invention belongs to the technical field of temperature sensors, and in particular relates to a dual-redundancy cabin temperature sensor and a manufacturing method thereof. Background Art

[0002] Thermistor sensors have the characteristics of large temperature measurement range, high accuracy, stable performance and good repeatability. They are ideal temperature detection elements and are widely used in the aviation field to measure atmospheric temperature and fuel oil temperature. Moreover, due to the large resistance temperature coefficient of pure metals and rare metal alloys, their resistance-temperature characteristic curve has good reproducibility, making them ideal materials for resistance temperature sensors. Among them, transition metals such as Pt and Ni have large resistivity and good processing performance, so they are often used as resistance temperature sensor materials. According to their respective characteristics, the environments and temperature ranges they are used in are different. Generally speaking, platinum resistance has the characteristics of high temperature measurement accuracy, stable and reliable chemical properties, and a wide temperature measurement range, and can be used as a standard resistance thermometer.

[0003] However, for industrial applications, especially under lower temperature conditions, nickel resistors can partially replace platinum resistors and have broad application prospects. Compared with platinum resistors, nickel resistors have higher resistance temperature coefficients, which are more than 50% higher than platinum resistors, and have higher sensitivity. Under normal circumstances, the chemical properties of nickel wire are relatively stable and will not react with elements such as oxygen and chlorine. At the same time, nickel wire can also form a dense layer of nickel oxide on the surface, which has a protective effect. Moreover, nickel wire has good weldability and is relatively cheap. Below 200°C, the linearity of nickel's resistance-temperature characteristics is also relatively good. Therefore, airborne resistance sensors currently use more nickel resistors below 200°C.

[0004] However, these nickel resistors still have some problems during use. Currently, the most commonly used nickel resistors are thin-film nickel resistors. Thin-film nickel resistors are sensitive elements produced using thin-film technology and micro-machining technology. Therefore, they have the advantages of small size, small heat capacity, and fast dynamic response. However, due to the small size and heat capacity of thin-film nickel resistors, self-heating is very obvious, which will affect the measurement error, thereby causing certain obstacles to the use of thin-film nickel resistors. In addition, wire-wound nickel resistor sensitive elements are usually encapsulated in a fully enclosed metal casing, which will also cause the nickel resistor temperature sensor to have a slow dynamic response, thereby affecting the application of thin-film nickel resistors. Currently, there are no substitutes for thin-film nickel resistors in the field of temperature sensors, and there are no corresponding temperature sensors that can solve the problems of thin-film nickel resistors. Therefore, there is an urgent need for a dual-redundancy cabin temperature sensor and a method for making the same to solve the above-mentioned problems of nickel resistors in the field of temperature sensors. Summary of the invention

[0005] In view of this, the present invention proposes a dual-redundancy cabin temperature sensor and a manufacturing method thereof, which are applied to the technical field of temperature sensors to solve the existing technical problems of easy self-heating, measurement errors and slow dynamic response speed.

[0006] In order to achieve the above technical objectives, the specific technical solutions adopted by the present invention are:

[0007] A dual-redundancy cabin temperature sensor comprises a base, a bracket assembly, a skeleton assembly, a nickel wire, a terminal lug assembly, a manganese copper wire, a terminal rod, a lead wire and three terminal posts, the three terminal posts are molded into one piece with the base, the three terminal posts are distributed in a triangular shape on the base, two grooves are provided on the top of the base, the skeleton assembly is vertically arranged, the bottom of the skeleton assembly goes deep into the groove of the base for bonding and fixing, the upper part of the skeleton assembly is wound with a nickel wire, the lower part of the skeleton assembly is wound with a manganese copper wire, the terminal lug assembly comprises a first terminal lug, a second terminal lug and a third terminal lug, one end of the nickel wire is welded to the first terminal lug, the other end of the nickel wire is welded to the second terminal lug, the manganese copper One end of the wire is welded to the second terminal plate, and the other end of the manganese copper wire is welded to the third terminal plate through a connecting through hole set on the skeleton component. The skeleton component is provided with multiple rivets and rivet holes for accommodating the rivets. After the connecting through hole and the third terminal plate are assembled, they are expanded and riveted with rivets. The terminal rod passes through the rivet holes at the bottom of the two skeleton components, and the two ends of the terminal rod are connected to the skeleton components through rivets. The middle part of the terminal rod is contacted and welded with the first terminal. There are two leads, and one end of the two leads is respectively passed through the rivet holes at the top of the skeleton component and welded to the rivet, and the other ends of the two leads are respectively installed in the second terminal and the third terminal for welding and fixing.

[0008] Furthermore, two mounting countersunk holes and two mounting through holes are respectively arranged around the base, and two mounting holes are arranged at the bottom of the bracket assembly, and the two mounting holes of the bracket assembly are aligned with the mounting through holes of the base.

[0009] Furthermore, two first slotted cylindrical head screws, two flat washers, two spring washers and two hexagonal nuts are arranged between the base and the bracket assembly. The two slotted cylindrical head screws, two flat washers, two spring washers and two hexagonal nuts are installed in sequence to connect the two mounting holes of the bracket assembly with the two mounting countersunk holes of the base.

[0010] Furthermore, three internal serrated locking washers and three second slotted cylindrical head screws are arranged between the base and the terminal posts, and threaded holes are arranged on the three terminal posts. The three internal serrated locking washers and the three second slotted cylindrical head screws penetrate into the three threaded holes, thereby being threadedly connected with the corresponding terminal posts.

[0011] Furthermore, three wire outlet slots are provided at the bottom of the base, and the wires are led out through the wire outlet slots. The first terminal forms two outputs with the second terminal and the third terminal respectively, and the first terminal is a common terminal.

[0012] Furthermore, the bracket assembly is assembled by multiple sub-brackets, and the contact points of the multiple sub-brackets are connected by welding. The bracket assembly includes an outer ring bracket and a transverse bracket. The outer ring bracket is distributed around the entire skeleton assembly, and the transverse bracket is horizontally arranged, and the two ends of the transverse bracket are respectively connected to the vertical part of the outer ring bracket. There are two transverse brackets, and the two transverse brackets are respectively arranged at the upper ends of the corresponding manganese copper wire and nickel wire.

[0013] Furthermore, the materials of the outer ring bracket and the transverse bracket are both stainless steel wire, the number of the outer ring bracket is one, the number of the transverse bracket is two, the outer ring bracket is rectangular and welded end to end, the transverse bracket is arched and has two bracket mounting holes respectively, and the two transverse brackets are connected to the outer ring bracket through the bracket mounting holes respectively.

[0014] Furthermore, the terminal is a rotating body, the threaded hole is arranged at one end of the terminal, and the other end of the terminal is provided with an inner hole.

[0015] A method for manufacturing a dual-redundancy cabin temperature sensor comprises the following steps:

[0016] S1. The three terminals are molded into one piece with the base. The three terminals are distributed in a triangle. Two grooves are provided on the top of the base, three outlet grooves are provided on the bottom, and two mounting countersunk holes and two mounting through holes are provided around the base.

[0017] S2. Assemble the outer ring bracket and the transverse bracket crosswise and weld the contact points, a total of nine welding points;

[0018] S3, assembling the three connecting through holes of the skeleton assembly with the corresponding wiring piece assembly and then expanding and riveting them with rivets;

[0019] S4, after winding the nickel wire on the upper part of the skeleton assembly, an annealing treatment is performed at 220°C for 10 hours to eliminate the influence of internal stress;

[0020] S5. Adjust the resistance value of the nickel wire so that it reaches the specified resistance value R at 0°C. 0Ni ;

[0021] S6, welding one end of the debugged nickel wire to the first terminal piece, and the other end to the second terminal piece;

[0022] S7. Wind the manganese copper wire at the bottom of the skeleton assembly according to R Mn =R0-R 0Ni , calculate the resistance value R of the manganese copper wire Mn, adjust the manganese copper wire to reach the specified resistance value R Mn Then, one end of the manganese copper wire is welded to the second terminal plate, and the other end is passed through the through hole of the frame component and then welded to the third terminal plate;

[0023] S8, performing annealing treatment on the component obtained in step S7 at 120° C. for 10 hours;

[0024] S9, debugging the component obtained in step S8 so that its resistance value at 0°C reaches the required resistance value R0. To stabilize the accuracy, the component obtained in step S8 is subjected to a temperature cycle treatment of -55°C to 150°C for a total of 5 cycles, and each cycle is maintained at -55°C and 150°C for 1 hour respectively. A layer of insulating paint is applied on the surface of the component and cured to obtain a sensitive element;

[0025] S10, install the frames of the two sensitive elements into the grooves of the base, and apply adhesive to the contact parts before installation;

[0026] S11, passing the connecting rod through the riveting holes at the bottom of the two frame components, welding the two ends to the rivets respectively, and contacting the middle with the first connecting post and welding;

[0027] S12, passing one end of each of the two leads through the rivet hole at the top of the skeleton assembly and welding to the rivet, inserting the other end into the inner hole of the second terminal and the third terminal and welding, and applying insulating paint on the welding part of the assembly and curing;

[0028] S13. Align the mounting holes of the bracket assembly with the mounting holes of the base, install two slotted cylindrical head screws, two flat washers, two spring washers and two hexagonal nuts in sequence, connect the two mounting holes of the bracket assembly with the two mounting countersunk holes of the base, install three internal serrated locking washers and three slotted cylindrical head screws into the threaded holes of the three terminals respectively, lead the connecting wires out through the wire outlet slot, the first terminal forms two outputs with the second terminal and the third terminal respectively, the first terminal is a common terminal, and the other two mounting holes of the bracket assembly and the two mounting through holes of the base are fixed when being installed to obtain a dual-redundancy cabin temperature sensor.

[0029] Furthermore, the debugging process in step S5 includes:

[0030] Measure the nickel wire resistance values ​​R'0Ni and R'100Ni of the assembly obtained in step S4 at 0°C and 100°C, and calculate the resistance temperature coefficient of the nickel wire α = (R' 100Ni -R' 0Ni ) / 100R' 0Ni , according to the resistance values ​​R0 and R0 that the nickel resistance temperature sensing element needs to achieve at 0℃ and 100℃ 100 , combined with the theoretical formula R0 = R0Ni +R Mn and R 100 =R 100Ni +R Mn , and get R 0Ni =(R 100 -R0) / 100 α , where R 0Ni is the theoretical resistance of nickel wire at 0°C, R 100Ni is the theoretical resistance of nickel wire at 100°C, R Mn is the resistance value of manganese copper wire, R Mn R is almost unchanged with the change of temperature. 0Ni is the resistance value of the nickel wire in the temperature sensing element at 0°C, calculate R 0Ni Finally, adjust the nickel wire in the assembly so that it reaches the specified resistance value R at 0°C. 0Ni .

[0031] By adopting the above technical solution, the present invention can also bring the following beneficial effects:

[0032] 1. The present invention mentions a dual-redundancy cabin temperature sensor, which effectively solves the problem of low resistance temperature coefficient and sensitivity of platinum resistance temperature sensor. By winding nickel wire and an appropriate amount of manganese copper wire on the skeleton component, compared with thin-film nickel resistor, it has large heat capacity, small self-heating error, high reliability and long life. At the same time, the sensitive element is in direct contact with the air, and the product has a fast dynamic response. It can be used to measure the temperature of aircraft cabin or cargo hold, effectively promoting the development of temperature sensor related technologies.

[0033] 2. The present invention mentions a dual-redundancy cabin temperature sensor, which has undergone environmental identification tests, life tests and field flight tests, has stable working performance, and has a simple manufacturing method, low production cost, and very simple operation. It can effectively replace traditional platinum resistance temperature sensors, is very suitable for promotion and application, and has very good economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 The present invention provides a schematic structural diagram of a dual-redundancy cabin temperature sensor;

[0036] Figure 2 This is a schematic diagram of the connection structure between the skeleton assembly and the nickel wire in a specific embodiment of the present invention;

[0037] Among them: 1. Base; 2. Flat washer; 3. Spring washer; 4. Hexagonal nut; 5. First slotted cylindrical head screw; 6. Horizontal bracket; 7. Skeleton assembly; 8. Outer ring bracket; 9. Nickel wire; 10. Terminal block assembly; 11. Manganese copper wire; 12. Internal serrated locking washer; 13. Second slotted cylindrical head screw; 14. Terminal rod; 15. Rivet; 16. Lead wire; 17. Bracket assembly; 18. Terminal post; 19. Wire outlet slot. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0040] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present invention, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0041] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0042] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0043] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, a dual-redundancy cabin temperature sensor includes a base 1, a bracket assembly 17, a skeleton assembly 7, a nickel wire 9, a terminal lug assembly 10, a manganese copper wire 11, a wiring rod 14, a lead 16 and three terminals 18, the three terminals 18 are molded into one piece with the base 1, and the three terminals 18 are distributed in a triangular shape on the base 1. Two grooves are provided on the top of the base 1, the skeleton assembly 7 is vertically arranged, and the bottom of the skeleton assembly 7 is deeply inserted into the groove of the base 1 for bonding and fixing, the upper part of the skeleton assembly 7 is wound with the nickel wire 9, and the lower part of the skeleton assembly 7 is wound with the manganese copper wire 11, the terminal lug assembly 10 includes a first terminal lug, a second terminal lug and a third terminal lug, one end of the nickel wire 9 is welded to the first terminal lug, and the other end of the nickel wire 9 is welded to the second terminal lug, and the manganese copper One end of the wire 11 is welded to the second terminal plate, and the other end of the manganese copper wire 11 is welded to the third terminal plate through a connecting through hole set on the skeleton component 7. The skeleton component 7 is provided with multiple rivets 15 and rivet holes for accommodating the rivets 15. After the connecting through hole is assembled with the third terminal plate, it is expanded and riveted with rivets 15. The terminal rod 14 passes through the rivet holes at the bottom of the two skeleton components 7. The two ends of the terminal rod 14 are connected to the skeleton component 7 through rivets 15. The middle part of the terminal rod 14 is contacted and welded with the first terminal 18. There are two leads 16. One end of the two leads 16 is respectively passed through the rivet holes at the top of the skeleton component 7 and welded to the rivet 15. The other ends of the two leads 16 are respectively installed in the second terminal 18 and the third terminal 18 for welding and fixing.

[0044] Two mounting countersunk holes and two mounting through holes are respectively arranged around the base 1, and two mounting holes are arranged at the bottom of the bracket assembly 17. The two mounting holes of the bracket assembly 17 are aligned with the mounting through holes of the base 1. Two first slotted cylindrical head screws 5, two flat washers 2, two spring washers 3 and two hexagonal nuts 4 are arranged between the base 1 and the bracket assembly 17. The two slotted cylindrical head screws, two flat washers 2, two spring washers 3 and two hexagonal nuts 4 are sequentially installed to connect the two mounting holes of the bracket assembly 17 with the two mounting countersunk holes of the base 1.

[0045] Three inner serrated locking washers 12 and three second slotted cylindrical head screws 13 are arranged between the base 1 and the terminal 18. The three terminal 18 are all provided with threaded holes. The three inner serrated locking washers 12 and the three second slotted cylindrical head screws 13 penetrate into the three threaded holes, thereby being threadedly connected with the corresponding terminal 18. Three outlet grooves 19 are arranged at the bottom of the base 1. The wires are led out through the outlet grooves 19. The first terminal 18 forms two-way output with the second terminal 18 and the third terminal 18 respectively. The first terminal 18 is a common terminal.

[0046] The bracket assembly 17 is assembled by a plurality of sub-brackets, and the contact points of the plurality of sub-brackets are connected by welding. The bracket assembly 17 includes an outer ring bracket 8 and a transverse bracket 6. The outer ring bracket 8 is distributed around the entire skeleton assembly 7. The transverse bracket 6 is arranged horizontally, and the two ends of the transverse bracket 6 are respectively connected to the vertical part of the outer ring bracket 8. There are two transverse brackets 6, and the two transverse brackets 6 are respectively arranged at the upper end positions of the corresponding manganese copper wire 11 and nickel wire 9. The materials of the outer ring bracket 8 and the transverse bracket 6 are both stainless steel wires. The number of the outer ring bracket 8 is one, and the number of the transverse bracket 6 is two. The outer ring bracket 8 is rectangular and welded end to end. The transverse bracket 6 is arched and is respectively provided with two bracket mounting holes. The two transverse brackets 6 are respectively connected to the outer ring bracket 8 through the bracket mounting holes. The terminal 18 is a rotating body, and the threaded hole is arranged at one end of the terminal 18, and the other end of the terminal 18 is provided with an inner hole.

[0047] A method for manufacturing a dual-redundancy cabin temperature sensor comprises the following steps:

[0048] S1. Three terminals 18 are molded into one body with the base 1. The three terminals 18 are distributed in a triangle. Two grooves are provided on the top of the base 1, three outlet grooves 19 are provided on the bottom, and two mounting countersunk holes and two mounting through holes are provided around the base 1;

[0049] S2, assemble the outer ring bracket 8 and the transverse bracket 6 crosswise, and weld the contact points, a total of nine welding points;

[0050] S3, assembling the three connecting through holes of the skeleton assembly 7 with the corresponding terminal plate assembly 10 and then expanding and riveting them with rivets 15;

[0051] S4, after winding the nickel wire 9 on the upper part of the skeleton assembly 7, an annealing treatment is performed at 220° C. for 10 hours to eliminate the influence of internal stress;

[0052] S5, adjust the resistance value of the nickel wire, the resistance values ​​of the nickel wire R'0Ni and R'100Ni of the assembly at 0°C and 100°C obtained in step S4, calculate the resistance temperature coefficient of the nickel wire α = (R' 100Ni -R' 0Ni ) / 100R'0Ni , according to the resistance values ​​R0 and R0 that the nickel resistance temperature sensing element needs to achieve at 0℃ and 100℃ 100 , combined with the theoretical formula R0 = R 0Ni +R Mn and R 100 =R 100Ni +R Mn , and get R 0Ni =(R 100 -R0) / 100 α , where R 0Ni is the theoretical resistance of nickel wire at 0°C, R 100Ni is the theoretical resistance of nickel wire at 100°C, R Mn is the resistance value of manganese copper wire, R Mn R is almost unchanged with the change of temperature. 0Ni is the resistance value of the nickel wire in the temperature sensing element at 0°C, calculate R 0Ni Finally, adjust the nickel wire in the assembly so that it reaches the specified resistance value R at 0°C. 0Ni ;

[0053] S6, welding one end of the debugged nickel wire 9 to the first terminal piece, and the other end to the second terminal piece;

[0054] S7. Wind the manganese copper wire at the bottom of the skeleton assembly according to R Mn =R0-R 0Ni , calculate the resistance value R of the manganese copper wire Mn , adjust the manganese copper wire to reach the specified resistance value R Mn Then, one end of the manganese copper wire is welded to the second terminal plate, and the other end is passed through the through hole of the frame component and then welded to the third terminal plate;

[0055] S8, performing annealing treatment on the component obtained in step S7 at 120° C. for 10 hours;

[0056] S9, debugging the component obtained in step S8 so that its resistance value at 0°C reaches the required resistance value R0. To stabilize the accuracy, the component obtained in step S8 is subjected to a temperature cycle treatment of -55°C to 150°C for a total of 5 cycles, and each cycle is maintained at -55°C and 150°C for 1 hour respectively. A layer of insulating paint is applied on the surface of the component and cured to obtain a sensitive element;

[0057] S10, install the frames of the two sensitive elements into the grooves of the base 1, and apply adhesive to the contact parts before installation;

[0058] S11, passing the connecting rod 14 through the riveting holes at the bottom of the two frame components 7, welding the two ends to the rivets 15 respectively, and contacting and welding the middle to the first connecting post 18;

[0059] S12, one end of each of the two lead wires 16 passes through the rivet hole at the top of the skeleton component 7 and is welded to the rivet 15, and the other end is inserted into the inner hole of the second terminal 18 and the third terminal 18 and is welded, and insulating paint is applied to the welding part of the component and cured;

[0060] S13. Align the mounting holes of the bracket assembly 17 with the mounting holes of the base 1, and install two slotted cylindrical head screws, two flat washers 2, two spring washers 3 and two hexagonal nuts 4 in sequence to connect the two mounting holes of the bracket assembly 17 with the two mounting countersunk holes of the base 1. Install three internal serrated locking washers 12 and three slotted cylindrical head screws into the threaded holes of the three terminal posts 18 respectively, and lead the connecting wires out through the wire outlet groove 19. The first terminal post 18 forms two outputs with the second terminal post 18 and the third terminal post 18 respectively. The first terminal post 18 is a common terminal. The other two mounting holes of the bracket assembly 17 and the two mounting through holes of the base 1 are fixed when they are installed to obtain a dual-redundancy cabin temperature sensor.

[0061] In short, the present invention has the advantages of large heat capacity, small self-heating error, high reliability, long life and fast response speed.

[0062] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A dual-redundancy cabin temperature sensor, characterized in that: The invention comprises a base (1), a bracket assembly (17), a frame assembly (7), a nickel wire (9), a terminal block assembly (10), a manganese copper wire (11), a terminal rod (14), a lead wire (16) and three terminal posts (18), wherein the three terminal posts (18) are molded into one piece with the base (1), and the three terminal posts (18) are distributed in a triangular shape on the base (1), and two grooves are provided on the top of the base (1). The frame assembly (7) is vertically arranged, and the bottom of the frame assembly (7) is inserted into the groove of the base (1). The upper part of the skeleton component (7) is wound with a nickel wire (9), the lower part of the skeleton component (7) is wound with a manganese copper wire (11), the terminal plate component (10) comprises a first terminal plate, a second terminal plate and a third terminal plate, one end of the nickel wire (9) is welded to the first terminal plate, the other end of the nickel wire (9) is welded to the second terminal plate, one end of the manganese copper wire (11) is welded to the second terminal plate, and the other end of the manganese copper wire (11) passes through a connecting through hole provided on the skeleton component (7) and is welded to the third terminal plate.

2. A dual-redundancy cabin temperature sensor as claimed in claim 1, characterized in that: The frame assembly (7) is provided with a plurality of rivets (15) and riveting holes for accommodating the rivets (15) to pass through. After the connecting through hole is assembled with the third connecting piece, the rivets (15) are used to expand and rivet. The connecting rod (14) passes through the riveting holes at the bottom of the two frame assemblies (7). The two ends of the connecting rod (14) are connected to the frame assembly (7) through the rivets (15), and the middle part of the connecting rod (14) is contact-welded with the first connecting post (18).

3. A dual-redundancy cabin temperature sensor as claimed in claim 2, characterized in that: There are two leads (16), one end of each of which passes through the riveting holes on the top of the frame assembly (7) and is welded to the rivet (15), and the other end of each of the two leads (16) is respectively inserted into the second terminal (18) and the third terminal (18) and fixed by welding.

4. A dual-redundancy cabin temperature sensor as claimed in claim 3, characterized in that: The bottom of the base (1) is provided with three wire outlet slots (19), the wires are led out through the wire outlet slots (19), the first binding post (18) respectively forms two outputs with the second binding post (18) and the third binding post (18), and the first binding post (18) is a common terminal.

5. A dual-redundancy cabin temperature sensor and a method for manufacturing the same as claimed in claim 4, characterized in that: The support assembly (17) is assembled by a plurality of sub-supports, and the contact points of the plurality of sub-supports are connected by welding. The support assembly (17) comprises an outer ring support (8) and a transverse support (6). The outer ring support (8) is distributed around the entire skeleton assembly (7). The transverse support (6) is arranged horizontally, and the two ends of the transverse support (6) are respectively connected to the vertical part of the outer ring support (8). There are two transverse supports (6), and the two transverse supports (6) are respectively arranged at the upper end positions of the corresponding manganese copper wire (11) and nickel wire (9).

6. A dual-redundancy cabin temperature sensor and a method for manufacturing the same as claimed in claim 5, characterized in that: The outer ring bracket (8) and the transverse bracket (6) are both made of stainless steel wire. The number of the outer ring bracket (8) is one, and the number of the transverse brackets (6) is two. The outer ring bracket (8) is rectangular and welded end to end. The transverse bracket (6) is arched and is respectively provided with two bracket mounting holes. The two transverse brackets (6) are respectively connected to the outer ring bracket (8) through the bracket mounting holes.

7. A dual-redundancy cabin temperature sensor and a method for manufacturing the same as claimed in claim 6, characterized in that: The terminal post (18) is a rotating body, the threaded hole is arranged at one end of the terminal post (18), and the other end of the terminal post (18) is provided with an inner hole.

8. A method for manufacturing a dual-redundancy cabin temperature sensor as claimed in claim 7, characterized in that: The following steps are involved: S1. The three terminal posts (18) are molded into one piece with the base (1). The three terminal posts (18) are distributed in a triangular shape. The top of the base (1) is provided with two grooves, the bottom is provided with three outlet grooves (19), and the surroundings are respectively provided with two mounting countersunk holes and two mounting through holes; S2, cross-assemble the outer ring bracket (8) and the transverse bracket (6), and weld the contact points, a total of nine welding points; S3, assembling the three connecting through holes of the skeleton component (7) and the corresponding terminal plate component (10), and then expanding and riveting them with rivets (15); S4, winding the nickel wire (9) on the upper part of the skeleton component (7), and then performing an annealing treatment at 220° C. for 10 hours to eliminate the influence of internal stress; S5. Adjust the resistance value of the nickel wire (9) so that the nickel wire (9) reaches a specified resistance value R at 0°C. 0Ni ; S6, welding one end of the debugged nickel wire (9) to the first terminal piece, and the other end to the second terminal piece; S7, winding the manganese copper wire (11) at the bottom of the skeleton assembly (7), according to R Mn =R0-R 0Ni , the resistance value R of the manganese copper wire (11) is calculated Mn , adjust the manganese copper wire (11) to reach the specified resistance value R Mn Then, one end of the manganese copper wire (11) is welded to the second terminal plate, and the other end is passed through the through hole of the frame component (7) and then welded to the third terminal plate; S8, performing annealing treatment on the component obtained in step S7 at 120° C. for 10 hours; S9, debugging the components obtained in step S8 to obtain sensitive components; S10, installing the frames of the two sensitive elements into the grooves of the base (1), and applying adhesive to the contact parts before installation; S11, passing the connecting rod (14) through the riveting holes at the bottom of the two frame components (7), welding the two ends to the rivets (15) respectively, and contacting and welding the middle to the first connecting post (18); S12, passing one end of each of the two lead wires (16) through the rivet hole at the top of the skeleton assembly (7) and welding to the rivet (15), inserting the other end into the inner hole of the second terminal (18) and the third terminal (18) and welding, and applying insulating paint on the welding part of the assembly and curing; S13, lead the connecting wire out through the outlet slot (19), the first terminal (18) forms two outputs with the second terminal (18) and the third terminal (18), the first terminal (18) is a common terminal, and the dual-redundancy cabin temperature sensor is obtained.

9. The method for manufacturing a dual-redundancy cabin temperature sensor according to claim 8, characterized in that: The debugging process in step S5 includes: Measure the nickel wire resistance values ​​R'0Ni and R'100Ni of the assembly obtained in step S4 at 0°C and 100°C, and calculate the resistance temperature coefficient of the nickel wire α = (R' 100Ni -R' 0Ni ) / 100R' 0Ni , according to the resistance values ​​R0 and R0 that the nickel resistance temperature sensing element needs to achieve at 0℃ and 100℃ 100 , combined with the theoretical formula R0 = R 0Ni +R Mn and R 100 =R 100Ni +R Mn , and get R 0Ni =(R 100 -R0) / 100 α , where R 0Ni is the theoretical resistance of nickel wire at 0°C, R 100Ni is the theoretical resistance of nickel wire at 100°C, R Mn is the resistance value of manganese copper wire, R Mn R is almost unchanged with the change of temperature. 0Ni is the resistance value of the nickel wire in the temperature sensing element at 0°C, calculate R 0Ni Finally, adjust the nickel wire in the assembly so that it reaches the specified resistance value R at 0°C. 0Ni .

10. The method for manufacturing a dual-redundancy cabin temperature sensor according to claim 9, characterized in that: The debugging process in step S9 includes: The resistance value of the component obtained in step S8 at 0°C reaches the required resistance value R0. In order to stabilize the accuracy, the component obtained in step S8 is subjected to a temperature cycle treatment of -55°C to 150°C, for a total of 5 cycles, and maintained at -55°C and 150°C for 1 hour in each cycle. A layer of insulating paint is applied on the surface of the component and cured to obtain a sensitive element.

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