A magnetic field-destructive electric heating film based on a nested quadrupole wiring configuration

Abstract

A magnetic field-deelectric heating film based on a nested quadrupole routing configuration is used in non-magnetic electric heating systems for quantum sensors such as atomic gyroscopes and atomic magnetometers. By establishing a nested equivalent quadrupole routing configuration, the interference magnetic field introduced by the current-driven heating conductor in the quantum sensor temperature control system is suppressed. This mainly solves the problem that as the quantum sensor volume gradually decreases, the interference magnetic field generated by the temperature control device is too large to adapt to miniaturization and high integration. In addition, as the heating area increases and the inter-layer alignment accuracy of the existing processing technology is improved, the magnetic field suppression performance of the magnetic field-deelectric heating film based on a nested quadrupole routing configuration of the present invention can be further improved. Ultimately, under the same conditions, a magnetic field suppression effect of less than 10nT was achieved, which is better than the existing technical level.

Description

Technical Field

[0001] The present invention relates to a multipole moment electric heating magnetic field cancellation technology, in particular to a magnetic field cancellation electric heating film based on a nested quadrupole moment routing configuration, which can be used in the field of quantum sensor technology such as atomic gyroscopes and atomic magnetometers. Background Art

[0002] With the rapid development of new theories and technologies in the quantum field, the performance of quantum sensors has significantly improved, and they are gradually emerging in fields such as inertial navigation, magnetic anomaly detection, and cardio-cerebral magnetic medical imaging. The atomic gas chamber, the core sensitive component of quantum sensors, requires high-temperature heating to meet the system's required atomic density. Furthermore, due to the measurement mechanism of quantum sensors, the introduction of unnecessary magnetic fields can affect measurement accuracy. Electric heating films, a common heating element in quantum sensor temperature control systems, introduce additional magnetic fields when energized to heat the conductors, directly affecting the output of the quantum sensor. Consequently, stringent requirements are placed on the electric heating film's magnetic field suppression capabilities.

[0003] With the further integration and miniaturization of quantum sensors, the excessive remanence of existing electric heating films has become a limiting factor in further reducing the distance between the atomic gas chamber and the electric heating film. Therefore, there is an urgent need for new wiring configurations and non-magnetic properties of the electric heating film. Summary of the Invention

[0004] The present invention proposes a magnetic field cancellation electric heating film based on a nested quadrupole moment routing configuration, which forms a new equivalent quadrupole moment by looping and bending the heating conductor line in the heating layer with the minimum routing unit of the quadrupole moment. 2+M The nested quadrupole magnetic field cancellation routing configuration of the polar moment, M is a non-negative integer, which effectively suppresses the residual magnetic field in the heating film layer. N The current distribution formed by the stacked heating layers creates a multipole moment magnetic field cancellation configuration between the layers, where N is a positive integer, effectively suppressing the residual magnetic field between the heating film layers. Under the same conditions, the present invention's magnetic field cancellation electric heating film based on a nested quadrupole moment routing configuration can achieve a magnetic field suppression effect with a remanence of less than 10nT, surpassing the state of the art.

[0005] The technical solutions of the present invention are as follows:

[0006] A magnetic field cancellation electric heating film based on a nested quadrupole moment routing configuration, characterized in that it includes an equivalent quadrupole moment, wherein the equivalent quadrupole moment includes two equivalent positive moments and two equivalent negative moments, and the equivalent positive moment is a first type of routing configuration quadrupole moment with a current direction configured as (+, -, -, +) The equivalent negative moment is the second type of routing configuration quadrupole moment with the current direction configured as (-, +, +, -) The routing configuration of the equivalent quadrupole moment is or

[0007] Includes 2 N +1 layer of insulation (3), 2 N+1 Gluing layer (2), 2 N The invention discloses a heating layer (1) having three parts, wherein the heating layer (1) comprises a heating conductor line (101-122), a connection point (11-32) and a soldering pad (131-132). The heating layer (1) is composed of a complete heating conductor (101-122, 11-32) with a first soldering pad (131) as a starting point and a second soldering pad (132) as an end point, and is reasonably arranged in an arbitrary approximately axially symmetrical pattern to form a heating layer main body area (101-116, 11-31) and a soldering pad area (117-122, 32). N is a positive integer, the first soldering pad (131) is an input end of a driving current, and the second soldering pad (132) is an output end of the driving current.

[0008] The specific arrangement of the heating conductors (101-122, 11-32) in the heating layer (1) is as follows: the main area (101-116, 11-31) of the heating layer uses the quadrupole routing configuration as the minimum routing unit to form a nested quadrupole routing configuration, and the nested quadrupole routing configuration is realized in the following manner: every four groups of minimum routing units form an equivalent quadrupole routing configuration, every four groups of equivalent quadrupole moments form a new equivalent quadrupole routing configuration, and so on, ultimately forming a 4-layered quadrupole routing configuration. 2+M The heating film has a polar-moment routing configuration, thereby realizing a structure in which the magnetic field within the heating film layer is canceled, and M is a non-negative integer.

[0009] The nested quadrupole routing configuration is looped and bent to form a 16-pole routing configuration, and its specific routing method is: starting from the first solder plate (131), the first heating conductor line (101) is routed in a counterclockwise direction at a certain distance along the inner edge of the insulating layer (3) to the first connection point (11), the second heating conductor line (102) is connected to the end of the first heating conductor line (101) at a certain distance at the first connection point (11), and is routed in a clockwise direction along the inner side of the first conductor line (101) to the second connection point (12), the seventeenth heating conductor line (117) is directly connected to the end of the second heating conductor line (102) at the second connection point (12), and is routed in a clockwise direction. The first minimum routing unit formed by the quadrupole moment is formed in the heating main area (101-116, 11-31); the third heating conductor line (103) is directly connected to the end of the seventeenth heating conductor line (117) at the third connection point (13); the fourth heating conductor line (104) is connected to the end of the third heating conductor line (103) at the fourth connection point (14) with a certain distance; and the first minimum routing unit formed by the quadrupole moment is formed in the heating main area (101-116, 11-31);

[0010] The fifth heating conductor line (105) is connected to the end of the fourth heating conductor line (104) at a certain distance at the fifth connection point (15), and is arranged in a clockwise direction along the inner side of the fourth conductor line (104) to the sixth connection point (16). The sixth heating conductor line (106) is connected to the end of the fifth heating conductor line (105) at a certain distance at the sixth connection point (16), and is arranged in a counterclockwise direction along the inner side of the fifth conductor line (105) to the seventh connection point (17). The eighteenth heating conductor line (118) is directly connected to the end of the sixth heating conductor line (106) at the seventh connection point (17), and is arranged in a counterclockwise direction along the inner side of the seventeenth heating conductor line (117) to the eighth connection point (18). The seventh heating conductor line (107) is connected to the end of the sixth heating conductor line (106) at the eighth connection point (1 8) is directly connected to the end of the eighteenth heating conductor line (118), and is arranged counterclockwise along the inner side of the sixth heating conductor line (106) to the ninth connection point (19). The eighth heating conductor line (108) is connected to the end of the seventh heating conductor line (107) at a certain distance at the ninth connection point (19), and is arranged clockwise along the inner side of the seventh conductor line (107) to the tenth connection point (20). The nineteenth heating conductor line (119) is directly connected to the end of the eighth heating conductor line (108) at the tenth connection point (20), and is arranged clockwise along the inner side of the eighteenth conductor line (138) to the eleventh connection point (21), forming a second minimum routing unit formed by a quadrupole moment in the heating main body area (101-116, 11-31);

[0011] The ninth heating conductor line (109) is directly connected to the end of the nineteenth heating conductor line (119) at the eleventh connection point (21), and is arranged in a clockwise direction along the inner side of the eighth heating conductor line (108) to the twelfth connection point (22). The tenth heating conductor line (110) is connected to the end of the ninth heating conductor line (109) at the twelfth connection point (22) at a certain distance, and is arranged in a counterclockwise direction along the inner side of the ninth conductor line (109) to the thirteenth connection point (23). The twentieth heating conductor line (120) is directly connected to the end of the tenth heating conductor line (110) at the thirteenth connection point (23), and is arranged in a counterclockwise direction along the nineteenth heating conductor line ( 119) to the inner side to the fourteenth connection point (24), the eleventh heating conductor line (111) is directly connected to the end of the twentieth heating conductor line (120) at the fourteenth connection point (24), and is arranged counterclockwise along the inner side of the tenth conductor line (110) to the fifteenth connection point (25), the twelfth heating conductor line (112) is connected to the end of the eleventh heating conductor line (111) at the fifteenth connection point (25) with a certain distance, and is arranged clockwise along the inner side of the eleventh conductor line (111) to the sixteenth connection point (26), forming a third minimum routing unit composed of a quadrupole moment in the heating main body area (101-116, 11-31);

[0012] The thirteenth heating conductor line (113) is connected to the end of the twelfth heating conductor line (112) at the sixteenth connection point (26) at a certain distance, and is extended counterclockwise along the inner side of the twelfth conductor line (112) to the seventeenth connection point (27). The fourteenth heating conductor line (114) is connected to the end of the thirteenth heating conductor line (113) at the seventeenth connection point (27) at a certain distance, and is extended clockwise along the inner side of the thirteenth conductor line (113) to the eighteenth connection point (28). The twenty-first heating conductor line (121) is directly connected to the end of the fourteenth heating conductor line (114) at the eighteenth connection point (28), and is extended clockwise along the inner side of the twentieth heating conductor line (120) to the nineteenth connection point (29). The fifteenth heating conductor line (115) is directly connected to the end of the twenty-first heating conductor line (121) at the nineteenth connection point (29). The first heating conductor (116) is connected to the end of the first heating conductor (115) at the 20th connection point (30) along the inner side of the fourteenth conductor (114) in a clockwise direction, the first heating conductor (116) is connected to the end of the first heating conductor (115) at a certain distance at the 20th connection point (30), the first heating conductor (116) is connected to the end of the first heating conductor (115) at the 21st connection point (31) along the inner side of the fifteenth conductor (115) in a counterclockwise direction, the second heating conductor (122) is directly connected to the end of the first heating conductor (116) at the 21st connection point (31), the second soldering pad (132) is connected to the end of the second heating conductor (122) at the 22nd connection point (32) along the inner side of the twenty-first heating conductor (121) in a counterclockwise direction, and the fourth minimum routing unit formed by the quadrupole moment is formed in the heating main area (101-116, 11-31).

[0013] The current direction of the heating conductor lines (101-116) in the main area (101-116, 11-31) of the heating layer is "+" in the clockwise direction and "-" in the counterclockwise direction. The nested quadrupole routing configuration is looped and bent to form 16 poles. The current directions of the heating conductor lines (101-116) in the main area (101-116, 11-31) of the heating layer are: "-", "+", "+", "-", "+", "-", "-", "+", "-", "-", "+", "-", "+", "-", "+", "-", and "-", forming four demagnetization structures of quadrupole routing configurations with quadrupole as the minimum routing unit ("-", "+", "+", "-", or "+", "-", "-", "+"); when the current direction of the minimum routing unit is "-", "+", "+", "-", the central residual magnetism of the core sensitive device of the quantum sensor is equivalent to a current direction of The residual magnetism generated by the heating conductor line; when the current direction of the minimum wiring unit is "+" "-" "-" "+", the residual magnetism in the center of the core sensitive device of the quantum sensor is equivalent to a current direction of The remanence generated by the heated conductor line, the four minimum wiring units constitute the demagnetization structure of the equivalent quadrupole moment wiring, the current direction is

[0014] The heating conductor line is further looped and bent inside or outside the nested quadrupole routing configuration to form a 16-pole routing configuration with the minimum routing unit to form a new equivalent quadrupole, forming 4 2+M (M is a non-negative integer) The nested quadrupole magnetic field cancellation routing configuration of the polar moment, where the larger the value of M, the more significant the magnetic field cancellation performance within the layer.

[0015] Each heating layer (1) is connected to the insulating layer (3) by gluing a glue layer (2) at high temperature on the upper and lower sides respectively, and the series and parallel connection of multiple solder plates (131, 132) realizes the interlayer connection of the heating layer (1) and the input and output of the driving current. Finally, N +1 (N is a positive integer) insulating layer (3), 2 N+1 (N is a positive integer) layers of glue (2), 2 N The interlayer current arrangement formed by the connection between the (N is a positive integer) layers of heating layers (1) and the solder pads (131, 132) constitutes an interlayer multipole moment configuration, thereby realizing a structure in which the magnetic field between the heating film layers is canceled.

[0016] 2 N Each layer of heating conductors (101-122, 11-32) of the heating layer (1) is arranged at the same position with the four 2+M The nested quadrupole loop bending of the polar moments constitutes a magnetic field cancellation structure within the layer.

[0017] 2 N The interlayer parameter N of the heating layer (1) has different values, and the interlayer demagnetization configuration is different. When N=1, the solder plates (131, 132) of the two heating layers (1) are connected in series end to end according to the direction of current. In the same vertical plane, the currents in the conductor lines between any adjacent heating layers are equal in magnitude and opposite in direction, forming an interlayer magnetic field cancellation structure with a dipole moment; when N=2 or N is an odd number greater than 2, 2 N The heating layer (1) is sequentially composed of four layers as the minimum unit. In the same vertical plane, the currents of any four layers of conductor lines are the same in magnitude, the currents of the middle two layers are in the same direction and are opposite in direction to the currents of the outermost two layers, forming a quadrupole moment interlayer magnetic field cancellation structure. The currents of any two adjacent groups of four heating layers (1) are in opposite directions. When N is an even number greater than 2, 2 NThe layer heating layer (1) is sequentially composed of four layers as the minimum component unit, and each four layers are equivalent to a layer of current structure. Four groups of such structures constitute an equivalent quadrupole moment structure, and then four groups of equivalent quadrupole moment structures constitute a new equivalent quadrupole moment structure, and so on, thereby forming a magnetic field cancellation structure composed of nested quadrupole moments between layers, wherein the larger the value of N is, the more significant the interlayer magnetic field cancellation performance is.

[0018] The technical effects of the present invention are as follows: The present invention is a magnetic field cancellation electric heating film based on a nested quadrupole routing configuration, which is used in non-magnetic electric heating systems of quantum sensors such as atomic gyroscopes and atomic magnetometers. The present invention is a magnetic field cancellation electric heating film based on a nested quadrupole routing configuration, which includes three parts: an insulating layer, a bonding layer, and a heating layer. The heating layer consists of a heating conductor and a solder disk. The heating layer contains a complete heating conductor, with the first solder disk as the starting point and the second solder disk as the end point. The quadrupole routing configuration in the middle is the smallest routing unit, and any approximately axially symmetrical figure is looped and bent to form a nested quadrupole routing configuration, ultimately forming 4 2+M (M is a non-negative integer) The magnetic field cancellation structure of the heating film layer with a polar moment routing configuration. The heating layer is formed by bonding a layer of adhesive at high temperature on the upper and lower surfaces and then connecting it to the insulating layer. The connection between the heating layers and the input and output of the driving current are achieved through the series and parallel connection of multiple solder pads. Finally, 2 N +1 (N is a positive integer) insulating layer, 2 N+1 (N is a positive integer) layers of glue, 2 N The interlayer current arrangement formed by the connection between (N is a positive integer) layers of heating layers and solder pads constitutes an interlayer multipole configuration, realizing a structure of magnetic field cancellation between heating film layers. The present invention develops a magnetic field cancellation electric heating film based on a nested quadrupole routing configuration. By establishing the concept of a nested equivalent quadrupole routing configuration, it can effectively suppress the interference magnetic field introduced by the current-driven heating conductor in the quantum sensor temperature control system. It mainly solves the problem that as the quantum sensor volume gradually becomes smaller, the interference magnetic field generated by the temperature control device is too large to adapt to miniaturization and high integration. With the increase of the heating area and the improvement of the interlayer alignment accuracy of the existing processing technology, the magnetic field suppression performance of the magnetic field cancellation electric heating film based on the nested quadrupole routing configuration of the present invention is better. Ultimately, under the same conditions, a magnetic field suppression effect better than 10nT was achieved.

[0019] The advantages of the present invention over the prior art are:

[0020] 1. The magnetic field cancellation electric heating film based on the nested quadrupole moment routing configuration of the present invention is formed by looping and bending the heating conductor line with the minimum routing unit of the quadrupole moment in the heating layer. Every four minimum routing units form an equivalent quadrupole moment configuration, and every four groups of equivalent quadrupole moments form a new equivalent quadrupole moment routing configuration. By analogy, 4 equivalent quadrupole moments are formed in the layer. 2+M(M is a non-negative integer) The nested quadrupole magnetic field cancellation routing configuration of the polar moments effectively suppresses the residual magnetic field in the heating film layer.

[0021] 2. The magnetic field elimination electric heating film based on the nested quadrupole moment routing configuration of the present invention is N The current arrangement formed by the superposition of (N is a positive integer) layers of heating layers constitutes an interlayer multi-pole moment magnetic field cancellation routing configuration, which effectively suppresses the residual magnetic field between the heating film layers.

[0022] 3. The magnetic field-destructive electric heating film based on the nested quadrupole wiring configuration of the present invention is not limited to the heating area of ​​any shape and size. The parameters of the heating conductor line in the heating layer are flexible and variable, and the achievable magnetic field suppression performance can be independently selected by optimizing the intra-layer parameter M and the inter-layer parameter N. Under the same conditions, a magnetic field suppression effect of less than 10nT can be achieved, which is better than the existing technology level. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a single-layer 16-pole magnetic field-destructive electric heating film based on a nested quadrupole wiring configuration of the present invention.

[0024] Figure 2 It is a schematic diagram of the current direction of the cross section of the single-layer 16-pole magnetic field de-electric heating film based on the nested quadrupole routing configuration of the present invention and the current direction of its equivalent quadrupole cross section.

[0025] Figure 3 It is a schematic diagram of the current direction of the cross section of the single-layer 64-pole magnetic field de-electric heating film based on the nested quadrupole wiring configuration of the present invention and the current direction of its equivalent quadrupole cross section.

[0026] Figure 4 It is a cross-sectional schematic diagram of the double-layer 16-pole magnetic field cancellation electric heating film based on the nested quadrupole wiring configuration of the present invention.

[0027] Figure 5 It is a cross-sectional schematic diagram of the four-layer 16-pole magnetic field cancellation electric heating film based on the nested quadrupole wiring configuration of the present invention.

[0028] Figure 6 It is a cross-sectional schematic diagram of the sixteen-layer 16-pole magnetic field cancellation electric heating film based on the nested quadrupole wiring configuration of the present invention.

[0029] Figure 7 It is a double-strand winding wire configuration heating film commonly used in this technical field.

[0030] Figure 8 It is a wiring configuration heating film that cannot form a nested quadrupole moment.

[0031] 17-18th connection point, 19-22nd connection point, 20-23rd connection point, 21-24th connection point, 22-25th connection point, 23-26th connection point, 27-28th connection point, 29-29th connection point, 30-20th connection point, 31-21st connection point, 32-22nd connection point, 101-first heating conductor line, 102-second heating conductor line, 103-third heating conductor line, 104-fourth heating conductor line, 105-fifth heating conductor line, 106-sixth Heating conductor wire, 107-seventh heating conductor wire, 108-eighth heating conductor wire, 109-ninth heating conductor wire, 110-tenth heating conductor wire, 111-eleventh heating conductor wire, 112-twelfth heating conductor wire, 113-thirteenth heating conductor wire, 114-fourteenth heating conductor wire, 115-fifteenth heating conductor wire, 116-sixteenth heating conductor wire, 117-seventeenth heating conductor wire, 118-eighteenth heating conductor wire, 119-nineteenth heating conductor wire, 120-twentieth heating conductor wire, 121-twenty-first heating conductor wire, 122-twenty-second heating conductor wire, 131-first solder pad, 132-second solder pad, 2-adhesive layer, 3-insulating layer, 401-first equivalent conductor wire, 402-second equivalent conductor wire, 403-third equivalent conductor wire, 404-fourth equivalent conductor wire. DETAILED DESCRIPTION

[0032] Below is the attached figure ( Figures 1-8 ) and Examples illustrate the present invention.

[0033] The present invention provides a magnetic field cancellation electric heating film based on a nested quadrupole routing configuration. The magnetic field cancellation principle is based on the Biot-Savart law to calculate the magnetic field generated by the current element at any point in space (the arbitrary point here is the center point of the core sensitive device of the quantum sensor, that is, the center point of the air chamber). The total magnetic field generated by the electric heating film at the center point of the air chamber is obtained by vector superposition of the magnetic fields generated by each heating conductor line at the center of the air chamber. The magnetic field suppression ability of the electric heating film is evaluated based on the comparison of the size of the residual magnetism.

[0034] The present invention is a magnetic field cancellation electric heating film based on a nested quadrupole routing configuration. By performing loop bending in the heating layer with the quadrupole routing configuration as the minimum routing unit, every four minimum routing units form an equivalent quadrupole configuration, and every four groups of equivalent quadrupole moments form a new equivalent quadrupole routing configuration. By analogy, 4 quadrupole routing configurations are formed in the layer.2+M (M is a non-negative integer) The nested quadrupole magnetic field of the polar moment cancels the routing configuration, and then the 2 N The current arrangement formed by the superposition of (N is a positive integer) layers of heating films constitutes an interlayer multi-pole moment magnetic field cancellation routing configuration, achieving magnetic field suppression performance with a residual magnetism of almost zero at the center of the gas chamber.

[0035] Example 1

[0036] like Figure 1 The heating film shown comprises an insulating layer (3) and a heating layer (1). The insulating layer (3) is made of polyimide material. The shape and size of the insulating layer (3) are determined according to the size of the required heating area. The heating layer (1) comprises three parts: heating conductor wires (101-122), connection points (11-32) and solder pads (131, 132).

[0037] The heating layer (1) is composed of a complete heating conductor (101-122, 11-32) with a first soldering plate (131) as a starting point and a second soldering plate (132) as an end point, and is reasonably arranged in an arbitrary approximately axially symmetrical pattern to form a heating layer main body area (101-116, 11-31) and a soldering plate area (117-122, 32).

[0038] The specific arrangement of the heating conductors (101-122, 11-32) in the heating layer (1) is as follows: the main area (101-116, 11-31) of the heating layer uses the quadrupole routing configuration as the minimum routing unit to loop back and bend to form a nested quadrupole routing configuration. The nested quadrupole routing configuration is implemented as follows: every four minimum routing units form an equivalent quadrupole routing configuration, every four groups of equivalent quadrupoles form a new equivalent quadrupole routing configuration, and so on, ultimately forming a 4-layer equivalent quadrupole routing configuration. 2+M (M is a non-negative integer) a heating film with a polar-moment routing configuration, thereby realizing a structure in which the magnetic field within the heating film layer is canceled.

[0039] The nested quadrupole routing configuration loops and bends to form 16(4 2+M, M=0) polar moment routing configuration, the specific routing method is: with the first solder plate (131) as the starting point, the first heating conductor line (101) is routed in a counterclockwise direction at a certain distance along the edge of the insulating layer (3) to the first connection point (11), the second heating conductor line (102) is connected to the end of the first heating conductor line (101) at a certain distance at the first connection point (11), and is routed in a clockwise direction along the inner side of the first conductor line (101) to the second connection point (12), the seventeenth heating conductor line (117) is directly connected to the end of the second heating conductor line (102) at the second connection point (12), and is routed in a clockwise direction around the second solder plate (131). The outer periphery of the disk (132) extends to the third connection point (13), the third heating conductor line (103) is directly connected to the end of the seventeenth heating conductor line (117) at the third connection point (13), and is arranged in a clockwise direction along the inner side of the second heating conductor line (102) to the fourth connection point (14). The fourth heating conductor line (104) is connected to the end of the third heating conductor line (103) at the fourth connection point (14) at a certain distance, and is arranged in a counterclockwise direction along the inner side of the third conductor line (103) to the fifth connection point (15), forming a first minimum routing unit composed of a quadrupole moment in the heating main area (101-116, 11-31).

[0040] The fifth heating conductor line (105) is connected to the end of the fourth heating conductor line (104) at a certain distance at the fifth connection point (15), and is arranged in a clockwise direction along the inner side of the fourth conductor line (104) to the sixth connection point (16). The sixth heating conductor line (106) is connected to the end of the fifth heating conductor line (105) at a certain distance at the sixth connection point (16), and is arranged in a counterclockwise direction along the inner side of the fifth conductor line (105) to the seventh connection point (17). The eighteenth heating conductor line (118) is directly connected to the end of the sixth heating conductor line (106) at the seventh connection point (17), and is arranged in a counterclockwise direction along the inner side of the seventeenth heating conductor line (117) to the eighth connection point (18). The seventh heating conductor line (107) is connected to the end of the sixth heating conductor line (106) at the eighth connection point (1 8) is directly connected to the end of the eighteenth heating conductor line (118), and is arranged counterclockwise along the inner side of the sixth heating conductor line (106) to the ninth connection point (19). The eighth heating conductor line (108) is connected to the end of the seventh heating conductor line (107) at a certain distance at the ninth connection point (19), and is arranged clockwise along the inner side of the seventh conductor line (107) to the tenth connection point (20). The nineteenth heating conductor line (119) is directly connected to the end of the eighth heating conductor line (108) at the tenth connection point (20), and is arranged clockwise along the inner side of the eighteenth conductor line (138) to the eleventh connection point (21), forming a second minimum routing unit composed of a quadrupole moment in the heating main area (101-116, 11-31).

[0041] The ninth heating conductor line (109) is directly connected to the end of the nineteenth heating conductor line (119) at the eleventh connection point (21), and is arranged in a clockwise direction along the inner side of the eighth heating conductor line (108) to the twelfth connection point (22). The tenth heating conductor line (110) is connected to the end of the ninth heating conductor line (109) at the twelfth connection point (22) at a certain distance, and is arranged in a counterclockwise direction along the inner side of the ninth conductor line (109) to the thirteenth connection point (23). The twentieth heating conductor line (120) is directly connected to the end of the tenth heating conductor line (110) at the thirteenth connection point (23), and is arranged in a counterclockwise direction along the nineteenth heating conductor line ( The eleventh heating conductor line (111) is directly connected to the end of the twentieth heating conductor line (120) at the fourteenth connection point (24), and is arranged counterclockwise along the inner side of the tenth conductor line (110) to the fifteenth connection point (25). The twelfth heating conductor line (112) is connected to the end of the eleventh heating conductor line (111) at the fifteenth connection point (25) at a certain distance, and is arranged clockwise along the inner side of the eleventh conductor line (111) to the sixteenth connection point (26), forming a third minimum routing unit composed of a quadrupole moment in the heating main body area (101-116, 11-31).

[0042] The thirteenth heating conductor line (113) is connected to the end of the twelfth heating conductor line (112) at the sixteenth connection point (26) at a certain distance, and is extended counterclockwise along the inner side of the twelfth conductor line (112) to the seventeenth connection point (27). The fourteenth heating conductor line (114) is connected to the end of the thirteenth heating conductor line (113) at the seventeenth connection point (27) at a certain distance, and is extended clockwise along the inner side of the thirteenth conductor line (113) to the eighteenth connection point (28). The twenty-first heating conductor line (121) is directly connected to the end of the fourteenth heating conductor line (114) at the eighteenth connection point (28), and is extended clockwise along the inner side of the twentieth heating conductor line (120) to the nineteenth connection point (29). The fifteenth heating conductor line (115) is directly connected to the end of the twenty-first heating conductor line (121) at the nineteenth connection point (29). The first heating conductor (116) is connected to the end of the first heating conductor (115) at the 20th connection point (30) along the inner side of the fourteenth conductor (114) in a clockwise direction, the first heating conductor (116) is connected to the end of the first heating conductor (115) at a certain distance at the 20th connection point (30), the first heating conductor (116) is connected to the end of the first heating conductor (115) at the 21st connection point (31) along the inner side of the fifteenth conductor (115) in a counterclockwise direction, the second heating conductor (122) is directly connected to the end of the first heating conductor (116) at the 21st connection point (31), the second soldering pad (132) is connected to the end of the second heating conductor (122) at the 22nd connection point (32) along the inner side of the twenty-first heating conductor (121) in a counterclockwise direction, and the fourth minimum routing unit formed by the quadrupole moment is formed in the heating main area (101-116, 11-31).

[0043] The first solder pad (131) serves as an input end of the driving current, and the second solder pad (132) serves as an output end of the driving current.

[0044] Under the premise that the heating conductors (101-122, 11-32) in the heating layer (1) are reasonably arranged to form an approximately axisymmetric pattern and the main area (101-116, 11-31) of the heating layer is looped and bent to form a nested quadrupole routing configuration, the first solder plate (131), the second solder plate (132), the heating conductor lines (101-122) and the connection points (11-32) can be located at any preferred position within the boundary of the insulating layer (3), and the width, thickness and line spacing of each heating conductor line (101-122) can be of any preferred size.

[0045] The nested quadrupole routing configuration loops and bends to form 16(4 2+M , M=0) polar moment heating film, the current direction of the cross section of the heating conductor line (101~116) in the main area (101~116, 11~31) of the heating layer and the current direction of the cross section of the equivalent quadrupole moment are as follows Figure 2As shown. It is considered that the current direction of the heating conductor line (101-116) in the main area (101-116, 11-31) of the heating layer is "+" in the clockwise direction and "-" in the counterclockwise direction. The nested quadrupole moment routing configuration is looped and bent to form 16 (4 2+M , M=0) polar moment, the current directions of the heating conductor lines (101~116) in the main area (101~116, 11~31) of the heating layer are: “-” “+” “+” “-”, “+” “-” “-” “+”, “+” “-” “-” “+”, “-” “+” “+” “-”, and four demagnetization structures of quadrupole moment routing configurations are formed with quadrupole moment as the minimum routing unit (“-” “+” “+” “-” or “+” “-” “-” “+”); when the current direction of the minimum routing unit is “-” “+” “+” “-”, the central residual magnetism of the core sensitive device of the quantum sensor is equivalent to a current direction of The residual magnetism generated by the heating conductor line; when the current direction of the minimum wiring unit is "+" "-" "-" "+", the residual magnetism in the center of the core sensitive device of the quantum sensor is equivalent to a current direction of The remanence generated by the heated conductor line, the four minimum wiring units constitute the demagnetization structure of the equivalent quadrupole moment wiring, the current direction is

[0046] The nested quadrupole routing configuration loops and bends to form 16(4 2+M ,M=0) The magnetic field cancellation principle of the polar moment is as follows Figure 2 As shown, the first heating conductor line (101) of the main part (101-116, 11-31) of the heating layer and the second heating conductor line (102) adjacent thereto have the same current magnitude and opposite direction. According to the Biot-Savart law, the two heating conductor lines (101, 102) can achieve a magnetic field cancellation at the center point P of the air chamber. However, since the positions of the two heating conductor lines cannot completely overlap, there is a small residual magnetic field. Since the second heating conductor (102) is closer to the center point P of the air chamber than the first heating conductor line (101), the residual magnetic field of the two heating conductor lines (101, 102) at the center of the air chamber can be equivalent to a conductor line with a smaller current and the same direction as the second heating conductor line (102) (the direction is "+"). Similarly, the residual magnetic field of the third heating conductor line (103) and the fourth heating conductor line (104) at the center point P of the air chamber can be equivalent to a conductor line with a smaller current and the same direction as the fourth heating conductor line (104) (the direction is "-"). At this point, the currents of the two equivalent conductor lines are in opposite directions, and the magnetic field can be canceled twice at the center point P of the air chamber. After the secondary demagnetization, there will be a smaller residual magnetic field at the center point P of the air chamber, which can be equivalent to a smaller current in the direction of The first equivalent conductor line (401) of the quadrupole moment routing configuration is used as the minimum routing unit, and the heating conductor is continued to be looped and bent. Similarly, the fifth heating conductor line (105), the sixth heating conductor line (106), the seventh heating conductor line (107), and the eighth heating conductor line (108) can be equivalent to a smaller current line with a direction of Similarly, the ninth heating conductor line (109), the tenth heating conductor line (110), the eleventh heating conductor line (111), and the twelfth heating conductor line (112) can be equivalent to a single line with a smaller current and a direction of Similarly, the thirteenth heating conductor line (113), the fourteenth heating conductor line (114), the fifteenth heating conductor line (115), and the sixteenth heating conductor line (116) can be equivalent to a single line with a smaller current and a direction of At this point, the first equivalent conductor line (401), the second equivalent conductor line (402), the third equivalent conductor line (403), and the fourth equivalent conductor line (404) once again form a quadrupole demagnetization routing configuration (the current direction is ), forming a 16-pole demagnetization routing configuration composed of a nested quadrupole routing configuration, achieving three-fold and four-fold cancellation of the magnetic field, and achieving magnetic field suppression performance with nearly zero residual magnetism at the center of the air chamber.

[0047] Example 2

[0048] The nested quadrupole routing configuration loops and bends to form 64(4 2+M , M=1) polar moment heating film, the difference between this embodiment and embodiment 1 is that: in embodiment 1, the nested quadrupole routing configuration is looped and bent to form a 16-pole routing configuration. The heating conductor line is further looped and bent inside or outside the quadrupole minimum routing unit to form a new equivalent quadrupole moment, forming a 64(4 2+M ,M=1) nested quadrupole magnetic field cancellation routing configuration, the current direction of the heating conductor line cross section in the heating main area of ​​the heating layer and its equivalent quadrupole cross section current direction are as follows Figure 3 As shown, a 64-pole demagnetization wiring configuration consisting of a nested quadrupole wiring configuration is formed in the heating layer (1), achieving five-fold and six-fold cancellation of the magnetic field, further improving the magnetic field suppression performance of the heating film.

[0049] Example 3

[0050] The difference between this embodiment and embodiment 1 or 2 is that: if the heating area is large enough, the heating conductor line can be looped and bent inside or outside the nested quadrupole routing configuration of embodiment 2 to form a 64-pole routing configuration, and a new equivalent quadrupole can be formed by looping and bending the heating conductor line with the quadrupole minimum routing unit. 2+M(M is an integer greater than 1) A nested quadrupole magnetic field cancellation configuration. The larger the value of M, the more significant the intra-layer magnetic field cancellation performance.

[0051] Example 4

[0052] In this embodiment, the above single-layer wiring configuration heating film is expanded into 2 N (N is a positive integer) layers of heating film. N +1 (N is a positive integer) insulating layer (3), 2 N+1 (N is a positive integer) layers of glue (2), 2 N The interlayer current arrangement formed by the connection between the (N is a positive integer) layers of heating layers (1) and the solder plates (131, 132) forms an interlayer multipole moment configuration, thereby realizing a structure in which the magnetic field between the heating film layers is canceled. Depending on the value of N, the interlayer demagnetization configuration is different; the larger the value of N, the more significant the magnetic field cancellation performance.

[0053] like Figure 4 As shown, it is a double layer (2 N ,N=1) Nested quadrupole routing configuration loops and bends to form 16(4 2+M ,M=0) polar pattern heating film, three layers (2 N +1, N=1) layer insulation layer (3) through four layers (2 N+1 , N=1) glue layer (2) middle high temperature glue double layer (2 N , N=1) heating layer (1), the heating conductor lines (101~116) of the main area (101~116, 11~31) of the double-layer heating layer are all bent in the same position in the nested quadrupole routing configuration to form 16 (4 2+M The dipole moment wiring configuration forms a magnetic field cancellation structure within the layer. The first solder pads (131) of the first and second heating layers serve as the output and input ends of the current source, respectively. The second solder pads (132) of the first and second heating layers are connected in series, so that within the same vertical plane, the currents in the conductor lines between any adjacent heating layers are equal in magnitude and opposite in direction, forming a dipole moment interlayer magnetic field cancellation structure. Similarly, if the heating area is large enough, the wiring configurations of Examples 2 and 3 can be formed within the layer.

[0054] like Figure 5 As shown, there are four layers (2 N ,N=2) nested quadrupole routing configuration loops and bends to form 16(4 2+M ,M=0) polar pattern heating film, five layers (2 N +1, N=2) layer insulation layer (3) through eight layers (2 N+1 , N=2) glue layer (2) middle high temperature glue four layers (2 N, N=2) heating layer (1), the heating conductor lines (101-116) of the main areas (101-116, 11-31) of the four heating layer are all bent in the same position in the nested quadrupole routing configuration to form a 16-pole routing configuration to form an intra-layer magnetic field cancellation structure, the first solder plates (131) of the first and fourth heating layers (1) are connected in parallel, the first solder plates (131) of the second and third heating layers (1) are connected in parallel, and after being connected in parallel, they serve as the output end and input end of the current source respectively, the second solder plates (132) of the first and second heating layers (1) are connected in series, and the second solder plates (132) of the third and fourth heating layers (1) are connected in series, so that in the same vertical plane, the currents of the four layers of conductor lines are the same, the current directions of the middle two layers are the same and the current directions of the outermost two layers are opposite, forming an inter-layer magnetic field cancellation structure of the quadrupole moment. Similarly, if the heating area is large enough, the routing configurations of embodiment 2 and embodiment 3 can be formed in the layer. Similarly, if the multi-layer processing technology is fine enough and the multi-layer alignment accuracy is high, two quadrupole moment trace configurations with opposite current directions can be alternately superimposed longitudinally on the basis of the four-layer heating film to form a 2 N+1 (N is an odd number greater than 2) insulating layer (3), 2 N+1 (N is an odd number greater than 2) glue layer (2), 2 N (N is an odd number greater than 2) layers of heating layers (1) further form an interlayer magnetic field cancellation structure.

[0055] Example 6

[0056] like Figure 6 As shown, there are sixteen layers (2 N ,N=4) nested quadrupole routing configuration loops and bends to form 16(4 2+M ,M=0) polar pattern heating film, seventeen layers (2 N +1, N = 4) layer insulation layer (3) through the thirty-second layer (2 N+1 , N=4) glued layer (2) middle high temperature glued sixteen layers (2 N, N=4) heating layer (1), the heating conductor lines (101-116) of the main areas (101-116, 11-31) of the sixteen heating layers are all bent in the same position in the nested quadrupole routing configuration to form a 16-pole routing configuration, forming a magnetic field cancellation structure within the layer. The first solder plates (131) of the first, fourth, sixth, seventh, tenth, eleventh, thirteenth and sixteenth heating layers are connected in parallel, and the first solder plates (131) of the second, third, fifth, eighth, ninth, twelfth, fourteenth and fifteenth heating layers are connected in parallel, and after being connected in parallel, they serve as the output and input ends of the current source respectively. The second solder plates (132) of the first and second heating layers (1) are connected in series, the second solder plates (132) of the third and fourth heating layers (1) are connected in series, the second solder plates (132) of the fifth and sixth heating layers (1) are connected in series, and the seventh and eighth heating layers ( 1) are connected in series, the second solder plates (132) of the ninth and tenth heating layers (1) are connected in series, the second solder plates (132) of the eleventh and twelfth heating layers (1) are connected in series, the second solder plates (132) of the thirteenth and fourteenth heating layers (1) are connected in series, and the second solder plates (132) of the fifteenth and sixteenth heating layers (1) are connected in series, so that in the same vertical plane, the currents of each of the four layers of conductor wires are the same, the current directions of the middle two layers are the same and the current directions of the outermost two layers are opposite, forming an interlayer magnetic field cancellation structure of the quadrupole moment. Every four layers are equivalent to a layer of current structure, and four groups of such structures constitute an equivalent quadrupole moment structure again, forming a 16-pole moment demagnetization structure formed by the nested quadrupole moment between layers. Similarly, if the heating area is large enough, the routing configuration of Example 2 and Example 3 can be formed within the layer. Similarly, if the multi-layer processing technology is fine enough and the multi-layer alignment accuracy is high, the sixteen-layer heating film can be stacked longitudinally with the quadrupole moment as the smallest component unit to form a 2 N+1 (N is an even number greater than 2) insulating layer (3), 2 N+1 (N is an even number greater than 2) glue layer (2), 2 N (N is an even number greater than 2) heating layer (1), further forming a 2 N (N is an even number greater than 2) pole moment demagnetization structure.

[0057] Comparative Example 1

[0058] like Figure 7As shown, it is a double-strand pair winding wiring configuration heating film commonly used in this technical field, which has the same heating conductor line width, thickness, the same heating conductor line spacing, the same heating substrate shape and size as Example 1, but the wiring configuration in the heating layer is that two wires with opposite current directions are arranged alternately. Under the same heating power, the simulation result of the residual magnetism in the center of the air chamber of the double-layer double-strand pair winding wiring configuration heating film is 32.5nT, while the simulation result of the residual magnetism in the center of the air chamber of the wiring configuration shown in the double-layer Example 1 is 7.8nT. The magnetic field suppression performance at the center of the air chamber is improved by 76%. And with the increase of the heating area and the maturity of the alignment accuracy of the multi-layer processing technology, by realizing the superposition of the nested quadrupole moment within the layer and the nested quadrupole moment between layers, the magnetic field suppression performance of the de-electrical heating film based on the nested quadrupole moment wiring configuration of the present invention will be better.

[0059] Comparative Example 2

[0060] like Figure 8 As shown, it is a quadrupole routing configuration heating film invented by others in the field of this technology. It has the same heating conductor line width, thickness, the same heating conductor line spacing, the same heating substrate shape and size as Example 1, but the routing configuration in the heating layer is a simple alternating arrangement of two quadrupole moments with opposite current directions. Under the same heating power, the simulation result of the residual magnetism in the center of the air chamber of the quadrupole routing configuration heating film is 13.6nT, while the simulation result of the residual magnetism in the center of the air chamber of the routing configuration shown in the double-layer Example 1 is 7.8nT. The magnetic field suppression performance at the center of the air chamber is improved by 42.6%. And with the increase of the heating area and the maturity of the alignment accuracy of the multi-layer processing technology, through the superposition of the nested quadrupole moments within the layer and the nested quadrupole moments between layers, the magnetic field suppression performance of the de-electrical heating film based on the nested quadrupole routing configuration of the present invention will be better.

[0061] Any content not described in detail in this specification is prior art known to those skilled in the art. It should be noted that the above description is intended to help those skilled in the art understand the present invention, but does not limit the scope of protection of the present invention. Any equivalent substitution, modification, improvement, and / or simplification of the above description that does not depart from the essence of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A magnetic field cancellation electric heating film based on a nested quadrupole moment routing configuration, characterized in that: Including equivalent quadrupole moment, the equivalent quadrupole moment includes two equivalent positive moments and two equivalent negative moments, the equivalent positive moment is the first type of routing configuration quadrupole moment with the current direction configured as (+, -, -, +) The equivalent negative moment is the second type of routing configuration quadrupole moment with the current direction configured as (-, +, +, -) The routing configuration of the equivalent quadrupole moment is or The magnetic field formed by the routing configuration of the equivalent quadrupole moment can achieve a magnetic field suppression effect of less than 10 nT on the de-electric heating film.

2. The magnetic field cancellation electric heating film based on the nested quadrupole wiring configuration according to claim 1 is characterized in that: Includes 2 N +1 layer of insulation (3), 2 N+1 Layer glue layer (2), 2 N The invention discloses a heating layer (1) having three parts, wherein the heating layer (1) comprises a heating conductor line (101-122), a connection point (11-32) and a soldering pad (131-132). The heating layer (1) is composed of a complete heating conductor (101-122, 11-32) with a first soldering pad (131) as a starting point and a second soldering pad (132) as an end point, and is reasonably arranged in an arbitrary approximately axially symmetrical pattern to form a heating layer main body area (101-116, 11-31) and a soldering pad area (117-122, 32). N is a positive integer, the first soldering pad (131) is an input end of a driving current, and the second soldering pad (132) is an output end of the driving current.

3. The magnetic field cancellation electric heating film based on the nested quadrupole wiring configuration according to claim 2 is characterized in that: The specific arrangement of the heating conductors (101-122, 11-32) in the heating layer (1) is as follows: the main area (101-116, 11-31) of the heating layer uses the quadrupole routing configuration as the minimum routing unit to form a nested quadrupole routing configuration, and the nested quadrupole routing configuration is realized in the following manner: every four groups of minimum routing units form an equivalent quadrupole routing configuration, every four groups of equivalent quadrupole moments form a new equivalent quadrupole routing configuration, and so on, ultimately forming a 4-layered quadrupole routing configuration. 2+M The heating film has a polar-moment routing configuration, thereby realizing a structure in which the magnetic field within the heating film layer is canceled, and M is a non-negative integer.

4. The magnetic field cancellation electric heating film based on the nested quadrupole wiring configuration according to claim 3 is characterized in that: The nested quadrupole routing configuration is looped and bent to form a 16-pole routing configuration, and its specific routing method is: starting from the first solder plate (131), the first heating conductor line (101) is routed in a counterclockwise direction at a certain distance along the inner edge of the insulating layer (3) to the first connection point (11), the second heating conductor line (102) is connected to the end of the first heating conductor line (101) at a certain distance at the first connection point (11), and is routed in a clockwise direction along the inner side of the first conductor line (101) to the second connection point (12), the seventeenth heating conductor line (117) is directly connected to the end of the second heating conductor line (102) at the second connection point (12), and is routed in a clockwise direction. The first minimum routing unit formed by the quadrupole moment is formed in the heating main area (101-116, 11-31); the third heating conductor line (103) is directly connected to the end of the seventeenth heating conductor line (117) at the third connection point (13); the fourth heating conductor line (104) is connected to the end of the third heating conductor line (103) at the fourth connection point (14) with a certain distance; and the first minimum routing unit formed by the quadrupole moment is formed in the heating main area (101-116, 11-31); The fifth heating conductor line (105) is connected to the end of the fourth heating conductor line (104) at a certain distance at the fifth connection point (15), and is arranged in a clockwise direction along the inner side of the fourth conductor line (104) to the sixth connection point (16). The sixth heating conductor line (106) is connected to the end of the fifth heating conductor line (105) at a certain distance at the sixth connection point (16), and is arranged in a counterclockwise direction along the inner side of the fifth conductor line (105) to the seventh connection point (17). The eighteenth heating conductor line (118) is directly connected to the end of the sixth heating conductor line (106) at the seventh connection point (17), and is arranged in a counterclockwise direction along the inner side of the seventeenth heating conductor line (117) to the eighth connection point (18). The seventh heating conductor line (107) is connected to the end of the sixth heating conductor line (106) at the eighth connection point (1 8) is directly connected to the end of the eighteenth heating conductor line (118), and is arranged counterclockwise along the inner side of the sixth heating conductor line (106) to the ninth connection point (19). The eighth heating conductor line (108) is connected to the end of the seventh heating conductor line (107) at a certain distance at the ninth connection point (19), and is arranged clockwise along the inner side of the seventh conductor line (107) to the tenth connection point (20). The nineteenth heating conductor line (119) is directly connected to the end of the eighth heating conductor line (108) at the tenth connection point (20), and is arranged clockwise along the inner side of the eighteenth conductor line (138) to the eleventh connection point (21), forming a second minimum routing unit formed by a quadrupole moment in the heating main body area (101-116, 11-31); The ninth heating conductor line (109) is directly connected to the end of the nineteenth heating conductor line (119) at the eleventh connection point (21), and is arranged in a clockwise direction along the inner side of the eighth heating conductor line (108) to the twelfth connection point (22). The tenth heating conductor line (110) is connected to the end of the ninth heating conductor line (109) at the twelfth connection point (22) at a certain distance, and is arranged in a counterclockwise direction along the inner side of the ninth conductor line (109) to the thirteenth connection point (23). The twentieth heating conductor line (120) is directly connected to the end of the tenth heating conductor line (110) at the thirteenth connection point (23), and is arranged in a counterclockwise direction along the nineteenth heating conductor line ( 119) to the inner side to the fourteenth connection point (24), the eleventh heating conductor line (111) is directly connected to the end of the twentieth heating conductor line (120) at the fourteenth connection point (24), and is arranged counterclockwise along the inner side of the tenth conductor line (110) to the fifteenth connection point (25), the twelfth heating conductor line (112) is connected to the end of the eleventh heating conductor line (111) at the fifteenth connection point (25) with a certain distance, and is arranged clockwise along the inner side of the eleventh conductor line (111) to the sixteenth connection point (26), forming a third minimum routing unit composed of a quadrupole moment in the heating main body area (101-116, 11-31); The thirteenth heating conductor line (113) is connected to the end of the twelfth heating conductor line (112) at the sixteenth connection point (26) at a certain distance, and is extended counterclockwise along the inner side of the twelfth conductor line (112) to the seventeenth connection point (27). The fourteenth heating conductor line (114) is connected to the end of the thirteenth heating conductor line (113) at the seventeenth connection point (27) at a certain distance, and is extended clockwise along the inner side of the thirteenth conductor line (113) to the eighteenth connection point (28). The twenty-first heating conductor line (121) is directly connected to the end of the fourteenth heating conductor line (114) at the eighteenth connection point (28), and is extended clockwise along the inner side of the twentieth heating conductor line (120) to the nineteenth connection point (29). The fifteenth heating conductor line (115) is directly connected to the end of the twenty-first heating conductor line (121) at the nineteenth connection point (29). The first heating conductor (116) is connected to the end of the first heating conductor (115) at the 20th connection point (30) along the inner side of the fourteenth conductor (114) in a clockwise direction, the first heating conductor (116) is connected to the end of the first heating conductor (115) at a certain distance at the 20th connection point (30), the first heating conductor (116) is connected to the end of the first heating conductor (115) at the 21st connection point (31) along the inner side of the fifteenth conductor (115) in a counterclockwise direction, the second heating conductor (122) is directly connected to the end of the first heating conductor (116) at the 21st connection point (31), the second soldering pad (132) is connected to the end of the second heating conductor (122) at the 22nd connection point (32) along the inner side of the twenty-first heating conductor (121) in a counterclockwise direction, and the fourth minimum routing unit formed by the quadrupole moment is formed in the heating main area (101-116, 11-31).

5. The magnetic field cancellation electric heating film based on the nested quadrupole wiring configuration according to claim 4 is characterized in that: The current direction of the heating conductor lines (101-116) in the main area (101-116, 11-31) of the heating layer is "+" in the clockwise direction and "-" in the counterclockwise direction. The nested quadrupole routing configuration is looped and bent to form 16 poles. The current directions of the heating conductor lines (101-116) in the main area (101-116, 11-31) of the heating layer are: "-" +" +" -", "+" -" -" -" +", "+" -" -" -" +", "-" +" +" -", and four demagnetization structures of quadrupole routing configurations are formed with quadrupole as the minimum routing unit ("-" +" +" -" or "+" -" -" +"); when the current direction of the minimum routing unit is "-" +" +" -", the central residual magnetism of the core sensitive device of the quantum sensor is equivalent to a current direction of " "The residual magnetism generated by the heating conductor line; when the current direction of the minimum wiring unit is "+"-"-"+", the residual magnetism in the center of the core sensitive device of the quantum sensor is equivalent to a current direction of " The remanence generated by the heating conductor line of ", the four minimum wiring units constitute the demagnetization structure of the equivalent quadrupole moment wiring, and the current direction is" ”.

6. The magnetic field cancellation electric heating film based on the nested quadrupole wiring configuration according to claim 3 is characterized in that: The heating conductor line is further looped and bent inside or outside the nested quadrupole routing configuration to form a 16-pole routing configuration with the minimum routing unit to form a new equivalent quadrupole, forming 4 2+M The nested quadrupole magnetic field cancellation routing configuration of the polar moment, where the larger the value of M is, the more significant the magnetic field cancellation performance within the layer is.

7. The magnetic field cancellation electric heating film based on the nested quadrupole wiring configuration according to claim 4, characterized in that: Each heating layer (1) is connected to the insulating layer (3) by gluing a glue layer (2) at high temperature on the upper and lower sides respectively, and the series and parallel connection of multiple solder plates (131, 132) realizes the interlayer connection of the heating layer (1) and the input and output of the driving current. Finally, N +1 layer of insulation (3), 2 N+1 Layer glue layer (2), 2 N The interlayer current arrangement formed by the connection between the heating layer (1) and the soldering plates (131, 132) constitutes an interlayer multipole moment configuration, thereby realizing a structure in which the magnetic field between the heating film layers is canceled.

8. The magnetic field cancellation electric heating film based on the nested quadrupole wiring configuration according to claim 3 is characterized in that: 2 N Each layer of heating conductors (101-122, 11-32) of the heating layer (1) is arranged at the same position with the four 2+M The nested quadrupole loop bending of the polar moments constitutes a magnetic field cancellation structure within the layer.

9. The magnetic field cancellation electric heating film based on the nested quadrupole wiring configuration according to claim 2, characterized in that: 2 N The interlayer parameter N of the heating layer (1) has different values, and the interlayer demagnetization configuration is different. When N=1, the solder plates (131, 132) of the two heating layers (1) are connected in series end to end according to the direction of current. In the same vertical plane, the currents in the conductor lines between any adjacent heating layers are equal in magnitude and opposite in direction, forming an interlayer magnetic field cancellation structure with a dipole moment; when N=2 or N is an odd number greater than 2, 2 N The heating layer (1) is sequentially composed of four layers as the minimum unit. In the same vertical plane, the currents of any four layers of conductor lines are the same in magnitude, the currents of the middle two layers are in the same direction and are opposite in direction to the currents of the outermost two layers, forming a quadrupole moment interlayer magnetic field cancellation structure. The currents of any two adjacent groups of four heating layers (1) are in opposite directions. When N is an even number greater than 2, 2 N The layer heating layer (1) is sequentially composed of four layers as the minimum component unit, and each four layers are equivalent to a layer of current structure. Four groups of such structures constitute an equivalent quadrupole moment structure, and then four groups of equivalent quadrupole moment structures constitute a new equivalent quadrupole moment structure, and so on, thereby forming a magnetic field cancellation structure composed of nested quadrupole moments between layers, wherein the larger the value of N is, the more significant the interlayer magnetic field cancellation performance is.

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