Device and method for verifying performance of electromagnetic field composite energy-taking passive sensor

Abstract

The invention discloses a device and method for verifying the performance of an electromagnetic field composite energy-taking passive sensor, and the device comprises a verification box which is internally provided with a dual-channel excitation source which is used for outputting magnetic field excitation and electric field excitation. The double-channel excitation source comprises high-voltage electrode plates installed on the left inner wall and the right inner wall of the verification box, two symmetrical brackets fixed to the bottom of the verification box, a convex bottom table fixed to the top ends of the two brackets, and a Helmholtz coil installed at the top end of the convex bottom table. According to the invention, the magnetic field and the electric field are arranged to be a vertically-crossed dual-channel excitation structure, so that excitation of fundamental waves and harmonic waves can be simultaneously or independently carried out to generate electromagnetic composite fields with different waveforms and different phase angles, and an excitation environment is provided for the composite energy-taking sensor through electromagnetic field excitation for a period of time; therefore, the performance of the sensor can be tested in various scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment detection, and in particular to a device and method for performance verification of an electromagnetic field composite energy harvesting passive sensor. Background Art

[0002] Energy-harvesting passive sensors play a key role in power systems. They provide power to sensors and related equipment by collecting energy from the environment. These sensors can use a variety of energy sources, such as solar energy, thermal energy, mechanical vibration, and radio frequency energy, to convert them into electrical energy, thereby achieving self-power. Another example is the current-harvesting temperature sensor. The current-harvesting temperature sensor uses the principle of current induction to obtain power, and obtains induction energy by connecting a coil to a long wire.

[0003] A current energy-taking temperature sensor calibration device disclosed in the Chinese patent authorization announcement number CN218724888U includes: a calibration box, including a box body and a box cover, the box body forming a storage chamber; a platform board; a wire placed on the platform board; a first connector; a second connector fixedly connected to the wire; a current generating component; a host computer; a communication module, which reads the data of the current energy-taking temperature sensor under test and transmits it to the host computer; wherein the first connector and the second connector are detachably electrically connected, and the current energy-taking temperature sensor can be calibrated by integrating the current generating component, wire and other components required for calibration;

[0004] The above technical solution still adopts a single field strength excitation method during operation, that is, it relies on gradually increasing the external field strength to observe the startup threshold of the sensor. However, in the actual environment, the sensor will face a variety of complex excitation conditions, and it is still difficult to analyze the power of the sensor. Therefore, a multi-field strength measurement method has emerged. The multi-field strength measurement method is based on the boost control of the spatial magnetic field and electric field to generate a composite field. However, this method cannot adjust the waveform and phase of the applied field. That is, in actual applications, the energy harvesting sensor may encounter excitations of different frequencies, waveforms and phases, which makes the test results of this method still difficult to reflect the true performance of the energy harvesting sensor under these conditions. Summary of the invention

[0005] The purpose of the present invention is to provide a device and method for performance calibration of electromagnetic field composite energy-harvesting passive sensors, which use Helmholtz coils to generate uniform magnetic fields and high-voltage pole plates to produce uniform electric fields. The two field strengths are placed vertically so that the magnetic flux lines and electric field lines cross vertically, simulating the high-voltage environment on site to form a dual-channel excitation structure for outputting magnetic field excitation or electric field excitation, realizing separate or simultaneous excitation of fundamental waves and harmonics, and adjusting different phase angles and harmonic proportions. At the same time, the Y-axis double-sprocket feeding module, the Z-axis double-pulley lifting and traction module, the sliding rotary drive unit, the worm gear reduction motor and other components control the Z-axis height and Y-axis position of the stage and the energy-harvesting sensor in the excitation environment, so as to accurately position the energy-harvesting sensor at the center of the electromagnetic composite field to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a device for performance verification of electromagnetic field composite energy harvesting passive sensor, comprising:

[0007] A test box, wherein a dual-channel excitation source for outputting magnetic field excitation and electric field excitation is arranged inside the test box, and the dual-channel excitation source comprises high-voltage electrode plates installed on the left and right inner walls of the test box, two symmetrical brackets fixed on the bottom of the test box, a convex base fixed on the top of the two brackets, and a Helmholtz coil installed on the top of the convex base, wherein the Helmholtz coil and the high-voltage electrode plates are placed vertically, and the generated magnetic flux lines and electric field lines cross vertically;

[0008] A mountain-shaped lower slide plate, the mountain-shaped lower slide plate is slidably mounted on the lower surface of the convex base platform, a right-angle frame extending upward is fixed to the back of the mountain-shaped lower slide plate, a Y-axis double-sprocket feed module for driving the mountain-shaped lower slide plate to move along the Y-axis is mounted on the left and right inner walls of the inspection box, a matrix support structure penetrating the outside of the convex base platform is mounted on the top of the mountain-shaped lower slide plate, and a loading platform for supporting an electromagnetic field composite energy-taking passive sensor is slidably mounted on the matrix support structure, a Z-axis double-belt pulley lifting and traction module for driving the loading platform to slide along the Z-axis is arranged between the right-angle frame and the mountain-shaped lower slide plate, and a sliding rotation drive unit for driving the Z-axis double-belt pulley lifting and traction module to work is mounted on one side outer wall of the inspection box;

[0009] A PLC controller is installed on one side of the surface of the test box, and the output end of the PLC controller is electrically connected to the input end of the Helmholtz coil, the Y-axis double sprocket feed module, the matrix support structure, the sliding rotation drive unit, and the high-voltage electrode plate.

[0010] Preferably, side convex plates are integrally formed on both sides of the surface of the U-shaped lower slide plate, a middle convex plate is fixed to the surface of the U-shaped lower slide plate between the two side convex plates, and a double-axis guide structure for maintaining a sliding connection state is provided between the upper surface of the side convex plate and the lower surface of the convex base.

[0011] Preferably, the dual-axis guide structure includes two lower end seats fixed on the lower surface of the convex base, a dovetail guide rail fixed on the upper surface of the middle convex plate, and rollers rotatably installed on the left and right sides of the bottom end of the lower end seat, and the dovetail guide rail and rollers are slidably matched.

[0012] Preferably, the right-angle frame includes a lower grid frame fixed to the back of the U-shaped lower slide plate, a vertical plate fixed to the top of the lower grid frame, and trapezoidal longitudinal arms fixed on both sides of the vertical plate surface, and the Z-axis double-pulley lifting and traction module is arranged between the two trapezoidal longitudinal arms.

[0013] Preferably, the matrix support structure includes a support rod fixed at the front and rear positions of the top ends of the two middle convex plates and a rubber sleeve slidably mounted on one end of the surface of the support rod, the top plane of the support rod is flush with the upper surface of the trapezoidal longitudinal arm, the loading platform is mounted on the four rubber sleeves and slidably cooperates with the support rod, and a straight groove is provided at the corner position inside the convex base platform for the support rod to slide back and forth in the Y-axis direction.

[0014] Preferably, the inspection box and the stage are supported by a composite material of polycarbonate and acrylonitrile-butadiene-styrene copolymer, and the right-angle frame, the herringbone lower slide plate, and the matrix support structure are made of acrylic material.

[0015] Preferably, two wheel seats are fixed on the left and right side walls of the mountain-shaped lower slide plate, and pulleys are rotatably installed inside the two wheel seats.

[0016] Preferably, the Z-axis double-pulley lifting and traction module includes two parallel transmission shafts rotatably installed between the two trapezoidal longitudinal arms and two symmetrical long right-angle beams fixed on the front and rear sides of the top of the middle convex plate. The Z-axis double-pulley lifting and traction module also includes a pulley lifting structure installed between the transmission shaft and the long right-angle beams. The pulley lifting structure is used to drive the loading platform and the rubber sleeve to lift and lower in the extension direction of the support rod. The front and rear sides of the interior of the loading platform are provided with rectangular hollow portions for the pulley lifting structure to move. The sliding rotation drive unit includes a circular frame fixed on the outer wall of one side of one of the trapezoidal longitudinal arms, a worm gear reduction motor 2 installed on the outer wall of one side of the circular frame, and a belt transmission structure installed on the output shaft of the worm gear reduction motor 2 for driving the two transmission shafts to rotate.

[0017] Preferably, the Y-axis double-sprocket feed module includes a front axle seat fixed on the inner wall of one side of the inspection box, a rear axle seat and a driven sprocket rotatably mounted on the outer wall of one side of the rear axle seat, a main shaft is rotatably mounted between the two front axle seats in the same X-axis direction, driving sprockets are fixed at both ends of the main shaft surface, and a chain is installed between the driving sprocket and the driven sprocket, the Y-axis double-sprocket feed module also includes a worm gear reduction motor 1 installed on the outer wall of one side of one of the front axle seats, the output end of the worm gear reduction motor 1 is fixedly connected to one end of the main shaft through a coupling, and the bottom end of the mountain-shaped lower slide plate is fixedly connected to one end of the chain.

[0018] The present invention also provides a method for verifying the performance of an electromagnetic field composite energy harvesting passive sensor, which is performed using the device described above, and the method comprises the following steps:

[0019] S101: placing the energy-harvesting passive sensor whose performance is to be verified on the stage, adjusting it to its position, adjusting the current of the Helmholtz coil through the PLC controller to set the required magnetic field strength, and setting the voltage of the high-voltage electrode plate, monitoring and adjusting through the PLC controller to obtain a uniform electric field, selecting currents of different frequencies and amplitudes to input into the Helmholtz coil, and adjusting the voltages of the two high-voltage electrode plates accordingly to simulate the high-voltage environment on site;

[0020] S102: After the simulation of the excitation environment in the box to be verified is completed, the staff starts the worm gear reduction motor 1 and the sliding rotary drive unit through the PLC controller to work, and the worm gear reduction motor 1 and the Y-axis double sprocket feed module control the mountain-shaped lower slide, the right-angle frame, the Z-axis double-belt pulley lifting and traction module, the sliding rotary drive unit and the matrix support structure, and the position of the stage in the Y-axis direction. The sliding rotary drive unit and the Z-axis double-belt pulley lifting and traction module drive the height of the matrix support structure, the stage, and the electromagnetic field composite energy-taking passive sensor on the Z-axis, so as to position the electromagnetic field composite energy-taking passive sensor to be verified to the center of the electromagnetic composite field, or move it to different positions of the electromagnetic composite field;

[0021] S103: Provide an excitation environment for the electromagnetic field composite energy sensor through electromagnetic field excitation for a period of time, and calculate the total power consumption P in the current time out , stop the excitation output, observe the continuous working time of the composite energy sensor to be tested, so as to calculate the total power consumption P of the sensor from start to stop in , thus calculating power = P in / P out ;

[0022] S104: Using a PLC controller to control the Helmholtz coil and the high-voltage electrode plate, the calibration box can be quickly switched under different electric and magnetic field conditions to obtain response data of the energy-harvesting passive sensor under a variety of electromagnetic composite environments.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the device and method for electromagnetic field composite energy-harvesting passive sensor performance verification can generate a uniform magnetic field through the Helmholtz coil, and the high-voltage electrode plate generates a uniform electric field, the magnetic flux lines and the electric field lines are vertically crossed, simulating the on-site high-voltage environment, and by setting the magnetic field and the electric field to a dual-channel excitation structure in which the magnetic field and the electric field are vertically crossed, the fundamental wave and the harmonic wave can be excited simultaneously or independently to generate electromagnetic composite fields with different waveforms and different phase angles, and an excitation environment is provided for the composite energy-harvesting sensor through a period of electromagnetic field excitation, thereby simulating the sensor to test the sensor performance in a variety of scenarios, and verifying the sensor's response to excitations of different frequencies and waveforms;

[0024] By equipping the Y-axis double sprocket feeding module, Z-axis double pulley lifting and traction module, sliding rotary drive unit and other components, the energy sensor can be accurately positioned in the center of the electromagnetic composite field. This precise positioning can not only ensure that the sensor is in the optimal excitation area and capture energy to the maximum extent, but also effectively avoid test errors caused by position deviation. By adjusting different Z-axis heights and Y-axis positions, different working environments can be simulated to examine the performance changes of the sensor in various spatial positions and conditions. This flexible adjustment function allows staff to conduct comprehensive tests under multiple variables, thereby better verifying the adaptability and stability of the energy sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0026] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 3 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 4 The three-dimensional structure of the present invention is shown in FIG. Figure 3 ;

[0029] Figure 5 The three-dimensional structure of the present invention is shown in FIG. Figure 4 ;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure of the convex base in the separated state according to the second embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the three-dimensional structure of a right-angle rack according to the second embodiment of the present invention;

[0032] Figure 8 It is a schematic diagram of the three-dimensional structure of the dual-axis guide structure of the second embodiment of the present invention;

[0033] Fig. 9 The three-dimensional structure diagram of the Z-axis double-belt-wheel lifting and traction module of the third embodiment of the present invention is shown in FIG. Figure 1 ;

[0034] Fig.10 The three-dimensional structure diagram of the Z-axis double-belt-wheel lifting and traction module of the third embodiment of the present invention is shown in FIG. Figure 2 ;

[0035] Fig.11 Schematic diagram of the three-dimensional structure of the stage according to the third embodiment of the present invention;

[0036] Fig.12 It is a schematic diagram of the three-dimensional structure of the Y-axis double sprocket feed module of the fourth embodiment of the present invention.

[0037] In the figure: 1, check box; 2, bracket; 3, convex base; 301, straight groove; 4, Helmholtz coil; 5, mountain-shaped lower slide plate; 501, middle convex plate; 502, side convex plate; 503, wheel seat; 504, pulley; 6, Y-axis double sprocket feeding module; 601, front axle seat; 602, main shaft; 603, driving sprocket; 604, chain; 605, rear axle seat; 606, driven sprocket; 7, right-angle frame; 701, lower grid frame; 702, vertical plate; 703, trapezoidal longitudinal arm; 8, matrix support structure; 801, support rod; 8 02. Rubber sleeve; 9. Loading table; 901. Rectangular hollow part; 10. Z-axis double-pulley lifting and traction module; 1001. Transmission shaft; 1002. Long right-angle beam; 1003. Pulley lifting structure; 11. Sliding rotary drive unit; 1101. Circle frame; 1102. Worm gear reduction motor 2; 1103. Belt transmission structure; 12. High-voltage electrode plate; 13. PLC controller; 14. Worm gear reduction motor 1; 15. Double-axis guide structure; 1501. Dovetail guide rail; 1502. Lower end seat; 1503. Roller. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1, by Figures 1 to 5The present invention includes a test box 1, wherein a dual-channel excitation source for outputting magnetic field excitation and electric field excitation is arranged inside the test box 1, and the dual-channel excitation source includes a high-voltage electrode plate 12 installed on the left and right inner walls of the test box 1, two symmetrical brackets 2 fixed at the bottom of the test box 1, a convex base 3 fixed at the top of the two brackets 2, and a Helmholtz coil 4 installed at the top of the convex base 3, the Helmholtz coil 4 and the high-voltage electrode plate 12 are placed vertically, and the generated magnetic flux lines and electric field lines cross vertically, the size of the high-voltage electrode plate 12 is 80cm*80cm*0.2cm, and the distance between the two high-voltage electrode plates 12 is 85cm to 120cm;

[0040] The Helmholtz coil 4 is composed of two groups of identical current coils, which are placed in a straight line to form a uniform magnetic field. By adjusting the current flowing through the coil, the strength of the magnetic field can be accurately controlled. The high-voltage electrode plates 12 are located on both sides of the Helmholtz coil 4 and are perpendicular to the Helmholtz coil 4 to generate a stable electric field. By adjusting the voltage between the two high-voltage electrode plates 12, the strength and distribution of the electric field can be controlled.

[0041] A mountain-shaped lower slide plate 5 is slidably mounted on the lower surface of the convex base platform 3, a right-angle frame 7 extending upward is fixed to the back of the mountain-shaped lower slide plate 5, a Y-axis double-sprocket feeding module 6 for driving the mountain-shaped lower slide plate 5 to move along the Y-axis is mounted on the left and right inner walls of the inspection box 1, a matrix support structure 8 penetrating the outside of the convex base platform 3 is mounted on the top of the mountain-shaped lower slide plate 5, and a loading platform 9 for supporting an electromagnetic field composite energy-taking passive sensor is slidably mounted on the matrix support structure 8, a Z-axis double-belt pulley lifting and traction module 10 for driving the loading platform 9 to slide along the Z-axis is arranged between the right-angle frame 7 and the mountain-shaped lower slide plate 5, and a sliding rotation drive unit 11 for driving the Z-axis double-belt pulley lifting and traction module 10 to work is mounted on one side outer wall of the inspection box 1;

[0042] A PLC controller 13, the PLC controller 13 is installed on one side of the surface of the test box 1, and the output end of the PLC controller 13 is electrically connected to the input end of the Helmholtz coil 4, the Y-axis double sprocket feeding module 6, the matrix support structure 8, the sliding rotation drive unit 11, and the high-voltage electrode plate 12;

[0043] The Helmholtz coil 4 can output the fundamental wave alone or the harmonics alone within 15A, and can also realize the superposition of the fundamental wave and the harmonics. The fundamental wave and the harmonics can adjust different phases respectively, and the phase angle can be adjusted between 0-90 degrees, and the harmonic proportion can meet the arbitrary adjustment of 0-10%; the high-voltage electrode plate 12 can output the fundamental wave alone or the harmonics alone within 1KV, and can also realize the superposition of the fundamental wave and the harmonics. The fundamental wave and the harmonics can adjust different phases respectively, and the phase angle can be adjusted between 0-90 degrees, and the harmonic proportion can meet the arbitrary adjustment of 0-10%; the excitation of the magnetic field and the electric field can be output simultaneously or separately, wherein the phase adjustment is based on the voltage, the current phase is adjusted, and then the voltage and current phase angle difference is changed, so the phase adjustment can only be performed when the voltage and current are output simultaneously;

[0044] This embodiment also provides a method for verifying the performance of an electromagnetic field composite energy harvesting passive sensor, which is performed using the above-mentioned device. The method includes the following steps:

[0045] S101: placing the energy-taking passive sensor to be verified on the stage 9, adjusting it to its position, adjusting the current of the Helmholtz coil 4 through the PLC controller 13 to set the required magnetic field strength, and setting the voltage of the high-voltage electrode plate 12 at the same time, monitoring and adjusting through the PLC controller 13 to obtain a uniform electric field, selecting currents of different frequencies and amplitudes to input into the Helmholtz coil 4, and adjusting the voltages of the two high-voltage electrode plates 12 accordingly to simulate the high-voltage environment on site;

[0046] S102: After the simulation of the excitation environment in the box to be checked 1 is completed, the staff starts the worm gear reduction motor 14 and the sliding rotation drive unit 11 through the PLC controller 13 to work, and the worm gear reduction motor 14 and the Y-axis double sprocket feeding module 6 control the mountain-shaped lower slide 5, the right-angle frame 7, the Z-axis double-belt pulley lifting and traction module 10, the sliding rotation drive unit 11 and the matrix support structure 8, the position of the stage 9 in the Y-axis direction, and the sliding rotation drive unit 11 and the Z-axis double-belt pulley lifting and traction module 10 drive the height of the matrix support structure 8, the stage 9, and the electromagnetic field composite energy-taking passive sensor on the Z-axis, so as to position the electromagnetic field composite energy-taking passive sensor to be checked to the center of the electromagnetic composite field, or move it to different positions of the electromagnetic composite field;

[0047] S103: Provide an excitation environment for the electromagnetic field composite energy sensor through electromagnetic field excitation for a period of time, and calculate the total power consumption P in the current time out , stop the excitation output, observe the continuous working time of the composite energy sensor to be tested, so as to calculate the total power consumption P of the sensor from start to stop in , thus calculating power = Pin / P out ;

[0048] S104: Using the PLC controller 13 to control the Helmholtz coil 4 and the high-voltage electrode plate 12, the calibration box 1 can quickly switch under different electric and magnetic field conditions to obtain the response data of the energy-harvesting passive sensor under a variety of electromagnetic composite environments.

[0049] Embodiment 2, based on embodiment 1, Figure 6 , Figure 7 and Figure 8 It is shown that both sides of the surface of the mountain-shaped lower slide plate 5 are integrally formed with side convex plates 502, and a middle convex plate 501 is fixed on the surface of the mountain-shaped lower slide plate 5 between the two side convex plates 502. The middle convex plate 501 is used to support the lower half structure of the Z-axis double-belt wheel lifting and traction module 10, so that the Z-axis double-belt wheel lifting and traction module 10 can move stably;

[0050] Two wheel seats 503 are fixed on the left and right side walls of the mountain-shaped lower slide plate 5, and pulleys 504 are rotatably installed inside the two wheel seats 503. A double-axis guide structure 15 for maintaining a sliding connection state is provided between the upper surface of the side convex plate 502 and the lower surface of the convex base 3;

[0051] The dual-axis guide structure 15 includes two lower end seats 1502 fixed on the lower surface of the convex base 3, a dovetail guide rail 1501 fixed on the upper surface of the middle convex plate 501, and rollers 1503 rotatably installed on the left and right sides of the bottom of the lower end seat 1502. The dovetail guide rail 1501 and the roller 1503 are slidably matched. The worm gear reduction motor 14 and the Y-axis double sprocket feeding module 6 control the mountain-shaped lower slide 5, the right-angle frame 7, the Z-axis double pulley lifting and traction module 10, the sliding rotation drive unit 11 and the matrix support structure 8, and the loading platform 9 are in the Y When the position in the Y-axis direction is reached, the Y-axis double sprocket feeding module 6 drives the mountain-shaped lower slide plate 5 and the right-angle frame 7 to slide on the Y-axis. In this process, the side convex plates 502 on the left and right sides of the mountain-shaped lower slide plate 5 slide with the lower surface of the convex base 3 through the double-axis guide structure 15. At this time, the lower end seat 1502 is in a fixed state, and the side convex plates 502, the mountain-shaped lower slide plate 5, and the middle convex plate 501 move forward, and the roller 1503 is used to assist the dovetail guide rail 1501 to slide, so that the electromagnetic field composite energy harvesting passive sensor is more stable and smooth when debugging the position in the Y-axis direction;

[0052] The right-angle frame 7 includes a lower grid frame 701 fixed to the back of the mountain-shaped lower slide plate 5, a vertical plate 702 fixed to the top of the lower grid frame 701, and trapezoidal longitudinal arms 703 fixed to both sides of the surface of the vertical plate 702. The Z-axis double-belt-wheel lifting and traction module 10 is arranged between the two trapezoidal longitudinal arms 703;

[0053] The lower grid frame 701 and the vertical plate 702 are stacked in sequence and fixedly extended upward, and the two trapezoidal longitudinal arms 703 extend in the Y-axis direction to form a solid frame, which constitutes a strong structural foundation support, and can effectively disperse the load from the upper part of the Z-axis double-belt wheel lifting and traction module 10, ensuring that the entire system remains stable when the sensor is lifting and lowering, and reducing the measurement error caused by vibration or tilt;

[0054] The matrix support structure 8 includes a support rod 801 fixed at the front and rear positions of the top ends of the two middle convex plates 501 and a rubber sleeve 802 slidably mounted on one end of the surface of the support rod 801. The top plane of the support rod 801 is flush with the upper surface of the trapezoidal longitudinal arm 703. The loading platform 9 is mounted on the four rubber sleeves 802 and slidably cooperates with the support rod 801. When the Z-axis double-belt wheel lifting and traction module 10 pulls the loading platform 9 up and down, the loading platform 9 slides and cooperates with the support rod 801 through the rubber sleeve 802. The rubber sleeve 802 can provide good friction, so that the loading platform 9 is more stable during the movement, reducing the error during sliding, and the flexibility of the rubber material absorbs part of the vibration, which helps to reduce the impact of external vibration on the loading platform 9;

[0055] A straight groove 301 is provided at the corner position inside the convex base 3 for the support rod 801 to slide forward and backward in the Y-axis direction. When the mountain-shaped lower slide plate 5 and the right-angle frame 7 are adjusted for Y-axis sliding, the straight groove 301 provides a sliding area for the support rod 801 to ensure that the bracket 2, the Helmholtz coil 4, and the convex base 3 are in a fixed state, and the matrix support structure 8, the right-angle frame 7, the Z-axis double-belt wheel lifting and traction module 10 and other components can slide normally;

[0056] The inspection box 1 and the loading platform 9 are supported by a composite material of polycarbonate and acrylonitrile-butadiene-styrene copolymer, and the right-angle frame 7, the mountain-shaped lower slide plate 5, and the matrix support structure 8 are made of acrylic material. The non-metallic material will not affect the electromagnetic composite field inside the inspection box 1.

[0057] Embodiment 3, based on embodiment 2, Fig. 9 , Fig.10 and Fig.11The Z-axis double-pulley lifting and traction module 10 includes two parallel transmission shafts 1001 rotatably mounted between the two trapezoidal longitudinal arms 703 and two symmetrical long right-angle beams 1002 fixed to the front and rear sides of the top of the middle convex plate 501. The Z-axis double-pulley lifting and traction module 10 also includes a belt wheel lifting structure 1003 installed between the transmission shaft 1001 and the long right-angle beam 1002. The belt wheel lifting structure 1003 is used to drive the loading platform 9 and the rubber sleeve 802 to rise and fall in the extension direction of the support rod 801. The loading platform 9 is internally The front and rear sides are provided with rectangular hollow parts 901 for the pulley lifting structure 1003 to move. The worm gear reduction motor 1102 works according to the direction, speed, angle and response time set by the PLC controller 13. The rotary power of the worm gear reduction motor 1102 is synchronously transmitted to the two transmission shafts 1001 through the belt transmission structure 1103. The pulley lifting structure 1003 between the transmission shaft 1001 and the long right-angle beam 1002 drives the loading platform 9 to slide in the vertical extension direction of the support rod 801.

[0058] The design of the two pulley lifting structures 1003 provides more uniform force transmission, reduces the motion jitter caused by uneven force, and thus achieves smooth lifting action. The self-locking characteristic of the worm gear reduction motor 1102 prevents the transmission structure from accidentally sliding when the power is off or stopped, thereby ensuring the stability of the position of the loading platform 9. The rectangular hollow portion 901 provides a space for the pulley lifting structure 1003 to move. The belt in the pulley lifting structure 1003 is fixedly connected to the inner wall of one side of the rectangular hollow portion 901, so that the belt is used to drive the loading platform 9 to move up and down.

[0059] The sliding rotation drive unit 11 includes a circular frame 1101 fixed on the outer wall of one side of one of the trapezoidal longitudinal arms 703, a worm gear reduction motor 1102 installed on the outer wall of one side of the circular frame 1101, and a belt transmission structure 1103 installed on the output shaft of the worm gear reduction motor 1102 for driving the two transmission shafts 1001 to rotate. The circular frame 1101 is slidably matched with the outer wall of one side of the inspection box 1, and a rectangular cavity for the sliding of the circular frame 1101 is reserved on the outer wall of the inspection box 1, so that the Y-axis double sprocket feed module 6 can drive the Z-axis double pulley lifting and traction module 10 and the sliding rotation drive unit 11, and both can still work normally.

[0060] Embodiment 4, based on embodiment 3, Fig.12It is given that the Y-axis double-sprocket feeding module 6 includes a front axle seat 601 fixed on the inner wall of one side of the inspection box 1, a rear axle seat 605, and a driven sprocket 606 rotatably installed on the outer wall of one side of the rear axle seat 605, a main shaft 602 is rotatably installed between the two front axle seats 601 in the same X-axis direction, and driving sprockets 603 are fixed at both ends of the surface of the main shaft 602, and a chain 604 is installed between the driving sprocket 603 and the driven sprocket 606, and the Y-axis double-sprocket feeding module 6 also includes a worm gear reduction motor 14 installed on the outer wall of one side of one of the front axle seats 601, the output end of the worm gear reduction motor 14 is fixedly connected to one end of the main shaft 602 through a coupling, and the bottom end of the mountain-shaped lower slide plate 5 is fixedly connected to one end of the chain 604;

[0061] The rotational power of the worm gear reduction motor 14 is transmitted to the two active sprockets 603 through the main shaft 602. At this time, the chain 604 between the active sprocket 603 and the driven sprocket 606 can rotate and drive the lower plate 5 in the Y-axis direction to adjust the Y-axis position of the sample carrier 9 and the sensor. In this process, the worm gear reduction motor 14 converts high speed into low speed and high torque output, which makes the position adjustment of the Y-axis more precise, and its self-locking characteristics can prevent the lower plate 5 in the shape of a mountain, the right-angle frame 7 and other components from accidentally shifting when the worm gear reduction motor 14 is powered off or under the action of external forces, so that each component can be adjusted accurately and smoothly.

[0062] When the embodiment of the present invention is used, first, the staff places the energy-taking passive sensor whose performance is to be verified on the stage 9, adjusts it to its position, and adjusts the current of the Helmholtz coil 4 through the PLC controller 13 to set the required magnetic field strength. In this process, the PLC controller 13 realizes precise current regulation through programmed control to ensure that the generated magnetic field is uniform and stable. At the same time, the voltage of the high-voltage electrode plate 12 is set, and the PLC controller 13 is used to monitor and adjust to obtain a uniform electric field. The strength of the two fields can be fed back to the operator in real time through the digital screen display on the PLC controller 13 to ensure that it meets the experimental requirements. In this process, currents of different frequencies and amplitudes are selected to be input into the Helmholtz coil 4, and the voltages of the two high-voltage electrode plates 12 are adjusted accordingly to simulate the high-voltage environment on site. These settings can simulate the actual use of the sensor in various electromagnetic environments. In this process, different magnetic field strengths or electric field strengths can be generated respectively, and magnetic field excitation and electric field excitation can also be output simultaneously to achieve the effect of magnetic field superposition and electric field. By adopting two excitation methods, fundamental wave and harmonic wave, separate or simultaneous excitation can be achieved, and different phase angles can be adjusted. After the simulation of the excitation environment in the verification box 1 is completed, the staff starts the worm gear reduction motor 14 and the sliding rotary drive unit 11 through the PLC controller 13 to work. The worm gear reduction motor 14 and the Y-axis double sprocket feeding module 6 control the mountain-shaped lower slide 5, the right-angle frame 7, the Z-axis double-belt pulley lifting and traction module 10, the sliding rotary drive unit 11 and the matrix support structure 8. The position of the stage 9 in the Y-axis direction is driven by the sliding rotary drive unit 11 and the Z-axis double-belt pulley lifting and traction module 10. , the stage 9, and the height of the passive energy sensor on the Z axis, so that the passive energy sensor to be calibrated is positioned at the center of the electromagnetic composite field, or moved to different positions of the electromagnetic composite field, to reduce the test error caused by position deviation, and through a period of electromagnetic field excitation, an excitation environment is provided to the passive energy sensor, and then the total power consumption at the current time is calculated. Through the programmed control of the PLC controller 13, the operator can quickly switch under different electric and magnetic field conditions to obtain the response data of the electromagnetic field composite energy harvesting passive sensor under a variety of electromagnetic composite environments.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for performance verification of electromagnetic field composite energy harvesting passive sensor, characterized in that: include: A calibration box (1), wherein a dual-channel excitation source for outputting magnetic field excitation and electric field excitation is arranged inside the calibration box (1), the dual-channel excitation source comprising a high-voltage electrode plate (12) mounted on the left and right inner walls of the calibration box (1), two symmetrical brackets (2) fixed at the bottom of the calibration box (1), a convex base (3) fixed at the top of the two brackets (2), and a Helmholtz coil (4) mounted at the top of the convex base (3), wherein the Helmholtz coil (4) and the high-voltage electrode plate (12) are arranged vertically, and the generated magnetic flux lines and electric field lines cross vertically; A mountain-shaped lower slide plate (5), the mountain-shaped lower slide plate (5) is slidably mounted on the lower surface of the convex base platform (3), a right-angle frame (7) extending upward is fixed to the back of the mountain-shaped lower slide plate (5), a Y-axis double-sprocket feeding module (6) for driving the mountain-shaped lower slide plate (5) to move along the Y axis is mounted on the left and right inner walls of the inspection box (1), a matrix support structure (8) penetrating the outside of the convex base platform (3) is mounted on the top of the mountain-shaped lower slide plate (5), and a loading platform (9) for supporting an electromagnetic field composite energy-taking passive sensor is slidably mounted on the matrix support structure (8), a Z-axis double-belt wheel lifting and traction module (10) for driving the loading platform (9) to slide along the Z axis is arranged between the right-angle frame (7) and the mountain-shaped lower slide plate (5), and a sliding rotation drive unit (11) for driving the Z-axis double-belt wheel lifting and traction module (10) to work is mounted on one side outer wall of the inspection box (1); A PLC controller (13) is installed on one side of the surface of the calibration box (1), and an output end of the PLC controller (13) is electrically connected to an input end of a Helmholtz coil (4), a Y-axis double sprocket feeding module (6), a matrix support structure (8), a sliding rotation drive unit (11), and a high-voltage electrode plate (12).

2. The device for performance verification of electromagnetic field composite energy harvesting passive sensor according to claim 1 is characterized in that: Side convex plates (502) are integrally formed on both sides of the surface of the U-shaped lower slide plate (5), a middle convex plate (501) is fixed to the surface of the U-shaped lower slide plate (5) between the two side convex plates (502), and a double-axis guide structure (15) for maintaining a sliding connection state is provided between the upper surface of the side convex plate (502) and the lower surface of the convex base (3).

3. The device for performance verification of electromagnetic field composite energy harvesting passive sensor according to claim 2 is characterized in that: The dual-axis guide structure (15) comprises two lower end seats (1502) fixed on the lower surface of the convex base (3), a dovetail guide rail (1501) fixed on the upper surface of the middle convex plate (501), and rollers (1503) rotatably mounted on the left and right sides of the bottom of the lower end seat (1502), and the dovetail guide rail (1501) and the roller (1503) are slidably matched.

4. The device for performance verification of electromagnetic field composite energy harvesting passive sensor according to claim 2 is characterized in that: The right-angle frame (7) comprises a lower grid frame (701) fixed on the back of the mountain-shaped lower slide plate (5), a vertical plate (702) fixed on the top of the lower grid frame (701), and trapezoidal longitudinal arms (703) fixed on both sides of the surface of the vertical plate (702), and the Z-axis double-belt wheel lifting and traction module (10) is arranged between the two trapezoidal longitudinal arms (703).

5. The device for performance verification of electromagnetic field composite energy harvesting passive sensor according to claim 4 is characterized in that: The matrix support structure (8) comprises a support rod (801) fixed at the front and rear positions of the top ends of the two middle convex plates (501) and a rubber sleeve (802) slidably mounted on one end of the surface of the support rod (801); the top plane of the support rod (801) is flush with the upper surface of the trapezoidal longitudinal arm (703); the loading platform (9) is mounted on the four rubber sleeves (802) and slidably cooperates with the support rod (801); and a straight groove (301) is provided at the corner position inside the convex base platform (3) for the support rod (801) to slide forward and backward in the Y-axis direction.

6. The device for performance verification of electromagnetic field composite energy harvesting passive sensor according to claim 5, characterized in that: The inspection box (1) and the loading platform (9) are supported by a composite material of polycarbonate and acrylonitrile-butadiene-styrene copolymer, and the right-angle frame (7), the mountain-shaped lower slide plate (5), and the matrix support structure (8) are made of acrylic material.

7. The device for performance verification of electromagnetic field composite energy harvesting passive sensor according to claim 2 is characterized in that: Two wheel seats (503) are fixed on the left and right side walls of the mountain-shaped lower slide plate (5), and pulleys (504) are rotatably installed inside the two wheel seats (503).

8. The device for performance verification of electromagnetic field composite energy harvesting passive sensor according to claim 5, characterized in that: The Z-axis double-belt-wheel lifting and traction module (10) comprises two parallel transmission shafts (1001) rotatably mounted between the two trapezoidal longitudinal arms (703) and two symmetrical long right-angle beams (1002) fixed to the front and rear sides of the top of the middle convex plate (501). The Z-axis double-belt-wheel lifting and traction module (10) further comprises a belt wheel lifting structure (1003) mounted between the transmission shaft (1001) and the long right-angle beam (1002). The belt wheel lifting structure (1003) is used to drive the loading platform (9) and the rubber sleeve (802) to move along the extension of the support rod (801). The loading platform (9) is lifted and lowered in the extending direction, and the front and rear sides inside the loading platform (9) are provided with rectangular hollow parts (901) for the pulley lifting structure (1003) to move, and the sliding rotation drive unit (11) comprises a circular frame (1101) fixed on the outer wall of one side of one of the trapezoidal longitudinal arms (703), a worm gear reduction motor (1102) installed on the outer wall of one side of the circular frame (1101), and a belt transmission structure (1103) installed on the output shaft of the worm gear reduction motor (1102) for driving the two transmission shafts (1001) to rotate.

9. The device for performance verification of electromagnetic field composite energy harvesting passive sensor according to claim 8, characterized in that: The Y-axis double-sprocket feeding module (6) comprises a front axle seat (601) fixed on the inner wall of one side of the inspection box (1), a rear axle seat (605) and a driven sprocket (606) rotatably mounted on the outer wall of one side of the rear axle seat (605); a main shaft (602) is rotatably mounted between the two front axle seats (601) in the same X-axis direction; driving sprockets (603) are fixed at both ends of the surface of the main shaft (602); a chain (604) is mounted between the driving sprocket (603) and the driven sprocket (606); the Y-axis double-sprocket feeding module (6) further comprises a worm gear reduction motor (14) mounted on the outer wall of one side of one of the front axle seats (601); the output end of the worm gear reduction motor (14) is fixedly connected to one end of the main shaft (602) via a coupling; the bottom end of the mountain-shaped lower slide plate (5) is fixedly connected to one end of the chain (604).

10. A performance verification method for an electromagnetic field composite energy harvesting passive sensor, using the device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S101: placing the energy-harvesting passive sensor whose performance is to be verified on the stage (9), adjusting it to its position, adjusting the current of the Helmholtz coil (4) through the PLC controller (13) to set the required magnetic field strength, and setting the voltage of the high-voltage electrode plate (12), monitoring and adjusting through the PLC controller (13) to obtain a uniform electric field, selecting currents of different frequencies and amplitudes to input into the Helmholtz coil (4), and adjusting the voltages of the two high-voltage electrode plates (12) accordingly to simulate the high-voltage environment on site; S102: After the excitation environment simulation in the box to be checked (1) is completed, the staff starts the worm gear reduction motor (14) and the sliding rotation drive unit (11) through the PLC controller (13) to work, and the worm gear reduction motor (14) and the Y-axis double sprocket feeding module (6) control the positions of the mountain-shaped lower slide plate (5), the right-angle frame (7), the Z-axis double belt wheel lifting and traction module (10), the sliding rotation drive unit (11) and the matrix support structure (8), and the loading platform (9) in the Y-axis direction. The sliding rotation drive unit (11) and the Z-axis double belt wheel lifting and traction module (10) drive the height of the matrix support structure (8), the loading platform (9), and the electromagnetic field composite energy-taking passive sensor on the Z-axis, so as to position the electromagnetic field composite energy-taking passive sensor to be checked at the center of the electromagnetic composite field, or move it to a different position of the electromagnetic composite field; S103: Provide an excitation environment for the electromagnetic field composite energy sensor through electromagnetic field excitation for a period of time, and calculate the total power consumption P in the current time out , stop the excitation output, observe the continuous working time of the composite energy sensor to be tested, so as to calculate the total power consumption P of the sensor from start to stop in , thus calculating power = P in / P out ; S104: Using a PLC controller (13) to control the Helmholtz coil (4) and the high-voltage electrode plate (12), the calibration box (1) can be quickly switched under different electric and magnetic field conditions, and the response data of the energy-harvesting passive sensor under a variety of electromagnetic composite environments can be obtained.

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