CN114623886A

CN114623886A - Non-magnetic metering system

Info

Publication number: CN114623886A
Application number: CN202011452760.8A
Authority: CN
Inventors: 吴克兵; 肖德银; 赵永刚; 廖伟军
Original assignee: Nationz Technologies Inc
Current assignee: Nationz Technologies Inc
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2022-06-14

Abstract

The application provides a no magnetism measurement system for carousel formula metering device. The nonmagnetic metering system comprises a turntable, a first oscillation module and a second oscillation module; the turntable comprises a metal area and a non-metal area; the first oscillating module comprises a first inductor; the second oscillating module comprises a second inductor; the first inductor and the second inductor are arranged above the rotary table, and 90-degree included angles are formed between the first inductor and the second inductor relative to the center of the rotary table. The nonmagnetic metering system obtains the information such as the angle, the direction and the number of turns of the rotating disc according to the quantity of the square wave pulses with the uniformly changed periods output by the two LC oscillating circuits, and is higher in precision and better in robustness.

Description

Non-magnetic metering system

Technical Field

The application relates to the technical field of nonmagnetic metering, in particular to a nonmagnetic metering system.

Background

At present, instruments and meters for metering fluid, such as intelligent water meters, are available on the market, and include a pulse accumulation type, a camera type, a photoelectric type, and the like. The pulse accumulation type water meter generally adopts elements such as a reed switch or a Hall element to sample, then converts the pulse number into water consumption in an arithmetic unit, stores the water consumption in a memory in a CPU, and directly reads data of the memory when reading the meter. The pulse accumulation type water meter has the defects that sampling elements such as a reed switch and the like have short service life and are easy to damage, and the metering is easy to be inaccurate under the vibration of an external magnetic field or a pipeline. The camera shooting type water meter is provided with a camera on a water meter display window, and has the defects that the analysis of an image needs very expensive electronic hardware, the power consumption of software processing is too large, and the overall cost is too high. The photoelectric meter puts the direct-reading photoelectric module into a liquid-sealed character wheel box of the water meter, and the liquid-sealed character wheel box is filled with non-conductive liquid, such as transformer oil, purified water or glycerin, and the penetration of tap water can cause the photoelectric module to be short-circuited and lose the function with the passage of time.

Along with the continuous development of sensor technology and the continuous widening of application field, the non-magnetic sensor is applied to the field of fluid metering, so that the interference of an external magnetic field can be avoided, and the metering precision is improved. The basic principle of non-magnetic metering is as follows: information acquisition is carried out by using a plurality of LC oscillating circuits under different damping conditions (such as metal and nonmetal) and different damping oscillation attenuation speeds. For example, a rotating disk in a metrology instrument includes a metallic portion and a non-metallic portion. In the process of rotating the turntable, when the inductor in the LC oscillating circuit is positioned above the nonmetal area of the turntable, the waveform of the LC oscillating circuit is slowly attenuated, and when the inductor is positioned above the metal area of the turntable, the waveform of the LC oscillating circuit is more slowly attenuated. The number of turns of the rotating disc is judged by collecting signals of the LC oscillating circuit, so that the flow of the fluid is further calculated.

Therefore, in the process of nonmagnetic measurement, how to accurately acquire the rotation information of the turntable, such as the rotation angle, the rotation direction, the rotation number and the like, becomes the key of the measurement accuracy.

Disclosure of Invention

Based on this, this application provides a no magnetism measurement system for carousel formula metering device to solve the measurement accuracy problem. The application provides a magnetic metering system, includes:

a first oscillating module comprising a first inductance;

a second oscillating module comprising a second inductance;

the first inductor and the second inductor are arranged above the turntable;

the turntable comprises a metal area and a non-metal area;

the first inductor and the second inductor are arranged at an included angle of 90 degrees relative to the center of the turntable.

According to some embodiments of the present application, the nonmagnetic metrology system further comprises:

and the third oscillating module comprises a third inductor, and the third oscillating module and the first inductor and the second inductor are arranged at an included angle of 135 degrees relative to the center of the turntable.

the charging module is connected with the input ends of the first oscillation module, the second oscillation module and the third oscillation module and is used for charging the oscillation circuit;

the positive end of the input end of the comparator module is connected with the output ends of the first oscillation module, the second oscillation module and the third oscillation module;

and the DAC module is connected with the negative end of the input end of the comparator module.

and the pulse counting module is connected with the output end of the comparator module.

and the encoder module is connected with the pulse counting module.

and the excitation voltage is connected with the charging module and used for providing the excitation voltage.

According to some embodiments of the application, the nonmagnetic metering system collects the pulse waveform quantity output by the first oscillation module and the second oscillation module in real time in the process of uniform rotation of the turntable, so as to determine the rotation angle of the turntable relative to the initial position.

According to some embodiments of the application, the nonmagnetic metering system collects the pulse waveform quantity output by the first oscillation module and the second oscillation module in real time in the process of uniform rotation of the turntable, so as to determine the state combination of the first inductor and the second inductor.

According to some embodiments of the present application, the nonmagnetic metrology system determines the direction of rotation of the turntable in a sequence according to a combination of states of the first and second inductors.

According to some embodiments of the present application, the nonmagnetic metering system determines the number of revolutions of the turntable according to the number of cycles of the state combination of the first inductor and the second inductor.

The application provides a no magnetism measurement system becomes the pulse signal among the LC oscillating circuit of 90 degrees settings through gathering two for the pivoted carousel, combines to obtain the rotation angle of carousel, direction of rotation, the number of turns of rotation etc. information accurately according to the 4 kinds of even states of cycle of two inductances.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without exceeding the protection scope of the present application.

FIG. 1 is a block diagram of a nonmagnetic metrology system according to an exemplary embodiment of the present application;

FIG. 2 is a schematic diagram of two inductor mounting locations according to an exemplary embodiment of the present application;

FIG. 3 is a flow chart of an information acquisition method according to a first example embodiment of the present application;

FIG. 4A shows a schematic view of an initial position of a turntable according to an example embodiment of the present application;

fig. 4B is a schematic diagram showing the number of output pulse waveforms of the first LC oscillating circuit and the second LC oscillating circuit in the initial position of the turntable;

FIG. 5A shows a schematic view of a second position of a turntable according to an exemplary embodiment of the present application;

FIG. 5B is a schematic diagram showing the number of output pulse waveforms of the first LC oscillator circuit and the second LC oscillator circuit at the second position of the turntable;

FIG. 6A shows a third schematic position of a turntable according to an example embodiment of the present application;

fig. 6B is a schematic diagram showing the number of output pulse waveforms of the first LC oscillating circuit and the second LC oscillating circuit in the third position of the turntable;

FIG. 7A shows a fourth schematic position of a turntable according to an exemplary embodiment of the present application;

FIG. 7B is a diagram showing the number of output pulse waveforms of the first LC oscillator circuit and the second LC oscillator circuit at the fourth position of the turntable;

FIG. 8A shows a schematic view of the rotation of the turntable;

FIG. 8B is a diagram showing waveforms of the number of output pulse waveforms of the first LC oscillating circuit and the second LC oscillating circuit during the rotation of the turntable;

FIG. 9 is a flow chart of an information acquisition method according to a second example embodiment of the present application;

fig. 10 is a flowchart of an information acquisition method according to a third exemplary embodiment of the present application;

fig. 11 is a block diagram of an information acquisition apparatus according to a first exemplary embodiment of the present application;

fig. 12 is a block diagram of an information acquisition apparatus according to a second exemplary embodiment of the present application;

fig. 13 is a block diagram of an information acquisition apparatus according to a second exemplary embodiment of the present application;

FIG. 14 is a block diagram of an electronic device according to an example embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.

Those skilled in the art will appreciate that the drawings are merely schematic representations of exemplary embodiments, which may not be to scale. The blocks or flows in the drawings are not necessarily required to practice the present application and therefore should not be used to limit the scope of the present application.

The inventors have found that in existing non-magnetic metrology schemes, the two inductors are arranged at 120 degrees relative to the rotating turntable. The result is that the four combined states of the two inductors last for non-uniform periods, for example, the two states 01 and 10 are maintained for 1/3 periods, and the two states 00/11 are maintained for 1/6 periods (0 represents the first state and 1 represents the second state). When the water flow is too fast or the temperature changes, the information such as the rotation angle, the rotation number and the like of the turntable can not be accurately obtained.

In order to solve the problems, the application provides an information acquisition method of a non-magnetic metering system, under the condition that two inductors are arranged at 90 degrees relative to a rotary table, pulse signals in two LC oscillating circuits are acquired, so that 4 states of the two inductors are combined to be changed periodically and uniformly, and information such as the rotation angle, the direction and the number of turns of the rotary table can be accurately acquired.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram of a nonmagnetic metrology system according to an example embodiment of the present application.

The application provides a no magnetism measurement system 1000 is used for carousel formula metering device, the carousel includes metal area and non-metal area. The nonmagnetic metering system 1000 includes an MCU module 100 and a peripheral function module 200. The MCU module 100 includes a comparator module 110, a charging module 120, a DAC module 130, a pulse counting module 140, an encoder module 150, a rotation counting module 160, a clock module 170, and an excitation voltage 180. The peripheral function module 200 includes a first oscillation module 210, a second oscillation module 220, and a third oscillation module 230. The first oscillation module 210 and the second oscillation module 220 are measurement oscillation modules, and the third oscillation module 230 is an alarm oscillation module.

The charging module 120 is connected to the input ends of the first oscillating module 210, the second oscillating module 220, and the third oscillating module; the output ends of the first oscillating module 210, the second oscillating module 220 and the third oscillating module 230 are connected with the positive end of the comparator module 110; the DAC module 130 is connected to the negative terminal of the comparator 110; the output end of the comparator module 110 is connected to the pulse counting module 140, and further connected to the encoder module 150; the encoder module 150 is coupled to a rotation counting module 160.

The first, second, and third

oscillating modules

210, 220, and 230 are LC oscillating circuits. The nonmagnetic metering system 1000 also includes a rotating turntable (not shown). The turntable includes metallic and non-metallic regions. The first inductor L1 in the first oscillation module 210, the first inductor L2 in the second oscillation module 220, and the first inductor L3 in the first oscillation module 230 are disposed above the turntable. The first inductor L1 and the second inductor L2 are arranged at an included angle of 90 degrees relative to the center of the turntable. The third inductor L3 and the first inductor L1 and the second inductor L2 are arranged at an included angle of 135 degrees relative to the center of the turntable.

The charging module 120 charges the first oscillation module 210, the second oscillation module 220, and the third oscillation module 230 in an interval periodic manner, and LC oscillation circuits in the first oscillation module 210, the second oscillation module 220, and the third oscillation module 230 generate LC oscillation signals. When the metal area of the turntable is close to the inductor, the oscillation amplitude attenuation of the corresponding LC oscillation module is accelerated, and the change of the LC oscillation amplitude occurs. Therefore, when the metal area and the non-metal area of the turntable cover the LC oscillating circuit, the oscillation amplitude of the oscillating circuit changes. By detecting the oscillation amplitude of the LC oscillation circuit, the oscillation amplitude is compared with a set threshold value by the comparator module 110, and converted into a square wave pulse to be output. The pulse counting module 140 counts according to the square wave pulse output by the comparator module 110; the encoder module 150 encodes the states of the first inductor and the second inductor according to the counting change condition of the square wave pulse, and outputs the encoded states to the rotation counting module 160; the rotation counting module 160 records the sequence of the state combination codes of the first inductor and the second inductor and the cycle number, so as to judge the information such as the rotation angle, the direction, the number of turns and the like of the disc, thereby realizing the metering.

According to the oscillation amplitude condition in the oscillation module, two states of the inductance are set: a first state and a second state. The comparator module 110 compares the damping oscillation amplitude of the oscillation module with a set threshold, and when the amplitude is greater than the threshold, square wave pulses are output, and the number of the square wave pulses is recorded as S. The threshold of the number of square wave pulses in the first state is set to S0, and the threshold of the number of square wave pulses in the second state is set to S1. And when S is larger than S1, judging that the inductor is above the non-metal area of the turntable, and the state is a second state. And when S is smaller than S0, the inductor is judged to be above the non-metal area of the turntable, and the state is the first state. According to an exemplary embodiment of the present application, the logic level of the second state is a high level 1, and the logic level of the first state is a low level 0. Through the state combination change condition of the first inductor L1 and the second inductor L2, the information such as the rotation angle, the direction, the number of turns and the like of the turntable can be accurately acquired.

Fig. 2 is a schematic diagram of inductor positions according to an example embodiment of the present application.

In order to more accurately acquire information of the rotation angle, direction, number of turns and the like of the turntable, in the information acquisition method provided by the application, the positions of the inductors L1 and L2 in the two metering oscillation modules are as shown in FIG. 2, and the metering inductors L1 and L2 are arranged at an included angle of 90 degrees relative to the center of the rotating turntable 300. And an inductor L3 in the alarm oscillation module is respectively arranged at an included angle of 135 degrees with the metering inductors L1 and L2. In the arrangement mode, the continuous periods of the four collected combined states of the metering inductors L1 and L2 are equal and are all one-fourth of the rotation period of the turntable. Therefore, the information such as the rotation angle, the direction, the number of turns and the like of the turntable can be more accurately acquired.

Fig. 3 is a flowchart of an information acquisition method according to a first exemplary embodiment of the present application.

According to an exemplary embodiment of the present application, there is provided an information acquisition method of a nonmagnetic metering system, applied to the nonmagnetic metering system shown in fig. 1, as shown in fig. 3, the information acquisition method including:

in step S110, after the nonmagnetic metering system is powered on, the initial position of the turntable is calibrated according to the number of pulse waveforms output by the first LC oscillating circuit and the second LC oscillating circuit which are arranged at an included angle of 90 degrees with respect to the center of the turntable.

In the rotating process of the turntable, when the metal area of the turntable is close to the inductor, the oscillation amplitude attenuation of the corresponding LC oscillation module is accelerated, and the change of the LC oscillation amplitude occurs. In the information acquisition method provided by the application, under a set LC oscillation amplitude detection threshold, when the amplitude of the LC oscillation module is higher than the detection threshold, the LC oscillation module outputs a square wave. The number of square wave pulse waveforms output by the first LC oscillating circuit and the second LC oscillating circuit in an oscillating period can be respectively denoted as LC1 and LC 2.

During the rotation of the turntable 300, the number of square wave pulse waveforms LC1 and LC2 output by the first LC oscillating circuit and the second LC oscillating circuit is continuously changed. After the system is powered on, the initial position of the turntable can be calibrated according to the pulse waveform number in the first LC oscillating circuit and the second LC oscillating circuit. As shown in fig. 4A and 4B, for example, when the numbers of pulse waveforms in the first LC oscillating circuit and the second LC oscillating circuit are 50, 35, respectively, the initial position of the calibration dial is 0 degree. At this time, the first inductor L1 is above the metal area 310 of the turntable 300, and the second inductor L2 and the warning inductor L3 are above the non-metal area 320 of the turntable 300.

In step S120, in the process of uniform rotation of the turntable, the pulse waveform quantity output by the first LC oscillating circuit and the second LC oscillating circuit is collected in real time.

In the process of rotating the turntable, the pulse waveform quantity output by the first LC oscillating circuit and the second LC oscillating circuit is continuously changed. As shown in fig. 5A and 5B, when the dial 300 is rotated clockwise by 90 degrees with respect to the initial position in fig. 4A and 4B, the number of pulse waveforms LC1, LC2 collected in the first LC oscillating circuit and the second LC oscillating circuit are both 50. At this time, the first inductor L1 and the second inductor L2 are above the non-metal area 320 of the turntable 300, and the alarm inductor L3 is above the metal area 310 of the turntable 300.

As shown in fig. 6A and 6B, when the dial 300 is further rotated clockwise by 90 degrees with respect to the position in fig. 5A and 5B, the numbers of pulse waveforms LC1, LC2 collected in the first LC oscillating circuit and the second LC oscillating circuit are 35, 50, respectively. At this time, the first inductor L1 and the warning inductor L3 are above the metal zone 310 of the turntable 300. The second inductor L2 is above the non-metallic region 320 of the turntable 300.

As shown in fig. 7A and 7B, when the dial 300 is further rotated by 90 degrees clockwise with respect to the position in fig. 6A and 6B, the acquired pulse waveform numbers LC1, LC2 in the first LC oscillating circuit and the second LC oscillating circuit are both 35. At this time, the first inductor L1 and the second inductor L2 are above the metal region 310 of the turntable 300. The alarm inductor L3 is above the non-metallic region 320 of the turntable 300.

In step S130, the angle of rotation of the turntable with respect to the initial position is determined according to the number of pulse waveforms output by the first LC oscillating circuit and the second LC oscillating circuit.

As shown in fig. 8A and 8B, during the continuous rotation of the turntable 300, the number of pulse waveforms collected in the first LC oscillating circuit and the second LC oscillating circuit varies sinusoidally with the rotation angle. Therefore, the rotation angle relative to the initial position can be determined according to the collected LC1 and LC2 pulse waveform numbers.

Fig. 9 shows a flowchart of an information acquisition method according to a second example embodiment of the present application.

According to an exemplary embodiment of the present application, an information obtaining method of a nonmagnetic metering system is provided, which is applied to the nonmagnetic metering system shown in fig. 1 and is used for obtaining the rotation direction and/or the rotation number of a turntable. As shown in fig. 9, in addition to the steps described in fig. 3, the information acquisition method further includes:

in step S210, in the process of uniform rotation of the turntable, the pulse waveform quantities output by the first LC oscillating circuit and the second LC oscillating circuit, which are set at an included angle of 90 degrees with respect to the center of the turntable, are collected in real time. As described above, when the first inductance of the first LC oscillating circuit and the second inductance of the second LC oscillating circuit are arranged at an included angle of 90 degrees with respect to the turntable, the number of pulse waveforms output by the first LC oscillating circuit and the second LC oscillating circuit changes periodically and sinusoidally.

In the rotating process of the turntable, when the metal area of the turntable is close to the inductor, the oscillation amplitude attenuation of the corresponding LC oscillation module is accelerated, and the change of the LC oscillation amplitude occurs. And under the set LC oscillation amplitude detection threshold, when the amplitude of the LC oscillation module is higher than the detection threshold, the LC oscillation module outputs a square wave pulse. In the process that the turntable rotates at a uniform speed for one circle, the first pulse waveform quantity and the second pulse waveform quantity output by the first LC oscillating circuit and the second LC oscillating circuit are respectively collected, that is, the sum of the square wave pulse quantities output by the first LC oscillating circuit and the second LC oscillating circuit in an oscillation period can be respectively recorded as S1 and S2, for example.

In step S220, the state combination of the first inductor and the second inductor is determined according to the number of pulse waveforms output by the first LC oscillating circuit and the second LC oscillating circuit.

According to the first pulse waveform quantity S1 output by the first LC oscillating circuit, the second pulse waveform quantity S2 output by the second LC oscillating circuit and the set first limit value and second limit value, the states of the first inductor and the second inductor can be respectively determined. In the information acquisition method provided by the present application, the first inductance in the first LC tank circuit and the second inductance in the second LC tank circuit define two states, i.e., a second state (e.g., high level, indicated by a numeral 1) and a first state (e.g., low level, indicated by a numeral 0). When the number of the pulse waveforms collected by the LC oscillating circuit is larger than a set first limit value, the inductance in the LC oscillating circuit is considered to be in a first state. And when the number of the pulse waveforms collected by the LC oscillating circuit is less than a set second limit value, the inductance in the LC oscillating circuit is considered to be in a second state. The first limit value and the second limit value may be set according to parameters of the LC oscillating circuit.

Thus, when the first pulse waveform number S1 is greater than the first limit value, the state of the first inductor may be defined as a first state; when the second pulse waveform number S2 is greater than the first limit, the state of the second inductor may be defined as the first state. When the first pulse waveform number S1 is smaller than the second limit value, the state of the first inductor may be defined as a second state. When the second pulse waveform number S2 is smaller than the second limit value, the state of the second inductor may be defined as a second state.

Thus, the state combination of the first inductance and the second inductance may include four types:

the first state combination is: the first state and the first state may be noted as 00. In this state, when the metal region 310 of the turntable 300 is located below the first inductor L1 and the second inductor L2, the state of the first inductor L1 is the first state, and the state of the second inductor L2 is also the first state, as shown in fig. 7A.

The second state combination is as follows: the second state and the first state may be noted as 10. In this state, as the turntable 300 rotates, the metal area 310 of the turntable 300 is far away from the first inductor L1, and the non-metal area 320 of the turntable 300 rotates to below the first inductor L1; the metal region 310 of the turntable 300 is still below the second inductance L2. At this time, the state of the first inductor L1 is the second state, and the state of the second inductor L2 is the first state, as shown in fig. 6A.

And the third state combination: the second state and the second state may be noted as 11. In this state, as the turntable 300 rotates, the metal region 310 of the turntable 300 moves away from the first inductor L1 and the second inductor L2 to the lower side of the warning inductor L3 as the turntable 300 rotates. The non-metallic region 320 of the turntable 300 rotates below the first inductor L1 and the second inductor L2. At this time, the state of the first inductor L1 is the second state, and the state of the second inductor L2 is also the second state, as shown in fig. 5A.

And the fourth state combination: the first state and the second state may be noted as 01. In this state, as the turntable 300 rotates, the metal region 310 of the turntable 300 is far away from the third inductor L3, such that the first inductor L1 is located above the metal region 310, and the non-metal region 320 is located below the second inductor L2. At this time, the state of the first inductor L1 is the first state, and the state of the second inductor L2 is the second state, as shown in fig. 4A.

In step S230, the rotation direction of the turntable is determined according to the order of the state combination of the first inductor and the second inductor.

For example, when the order of the state combinations of the first inductor and the second inductor is the first state combination 00, the second state combination 10, the third state combination 11, and the fourth state combination 01, it can be determined that the rotation direction of the turntable is the forward direction.

When the sequence of the state combinations of the first inductor and the second inductor is the first state combination 00, the fourth state combination 01, the third state combination 11, and the second state combination 10 in sequence, it can be determined that the rotation direction of the turntable is reverse.

Fig. 10 shows a flowchart of an information acquisition method according to a third example embodiment of the present application.

According to an exemplary embodiment of the present application, an information obtaining method of a nonmagnetic metering system is provided, which is applied to the nonmagnetic metering system shown in fig. 1 and is used for obtaining the number of rotation turns of a turntable. As shown in fig. 10, the information acquiring method includes, in addition to step S210, step S220, and step S230 shown in fig. 9:

in step S240, the number of rotations of the turntable is determined according to the number of cycles of the state combination of the first inductor and the second inductor.

When the state combinations of the first inductor and the second inductor sequentially traverse the first state combination 00, the second state combination 10, the third state combination 11, and the fourth state combination 01, it can be determined that the turntable rotates one turn in the forward direction.

When the state combinations of the first inductor and the second inductor sequentially traverse the first state combination 00, the fourth state combination 01, the third state combination 11 and the second state combination 10, it can be determined that the turntable reversely rotates for one turn. The number of turns of the turntable can be obtained through the traversal times of the combined state of the four devices.

Fig. 11 is a block diagram of an information acquisition apparatus according to a first exemplary embodiment of the present application.

According to some embodiments of the present application, there is also provided an information acquisition apparatus 300 of the nonmagnetic metering system 1000 shown in fig. 1, as shown in fig. 11, including an initial position determination module 310, a waveform quantity acquisition module 320, and a rotation angle acquisition module 330.

And the initial position determining module 310 is configured to calibrate the initial position of the turntable according to the number of pulse waveforms output by the first LC oscillating circuit and the second LC oscillating circuit which are arranged at an included angle of 90 degrees with respect to the center of the turntable after the nonmagnetic metering system is powered on.

And the waveform quantity acquisition module 320 is used for acquiring the pulse waveform quantity output by the first LC oscillating circuit and the second LC oscillating circuit in real time in the process of uniform rotation of the turntable.

A rotation angle obtaining module 330, configured to determine, according to the number of pulse waveforms output by the first LC oscillation circuit and the second LC oscillation circuit, an angle at which the turntable rotates relative to the initial position. In the continuous rotation process of the turntable, the number of the collected pulse waveforms in the first LC oscillating circuit and the second LC oscillating circuit periodically changes in a sine mode with the rotated angle. Therefore, the rotation angle relative to the initial position can be determined according to the collected LC1 and LC2 pulse waveform numbers.

Fig. 12 is a block diagram of an information acquisition apparatus according to a second exemplary embodiment of the present application.

According to some embodiments of the present application, there is also provided an information acquisition apparatus 400 of the nonmagnetic metering system 1000 shown in fig. 1, as shown in fig. 12, including a waveform quantity acquisition module 410, an inductance state determination module 420, and a rotation direction acquisition module 330.

And the waveform quantity acquisition module 410 is used for acquiring the pulse waveform quantity output by the first LC oscillating circuit and the second LC oscillating circuit which are arranged at an included angle of 90 degrees relative to the center of the turntable in real time in the process of uniform rotation of the turntable. When the first inductance of the first LC oscillating circuit and the second inductance of the second LC oscillating circuit are arranged at an included angle of 90 degrees relative to the turntable, the pulse waveform quantity output by the first LC oscillating circuit and the second LC oscillating circuit is changed in a periodic sinusoidal mode.

And an inductance state determining module 420, configured to determine a state combination of the first inductance and the second inductance according to the number of pulse waveforms output by the first LC oscillating circuit and the second LC oscillating circuit. According to the first pulse waveform quantity S1 output by the first LC oscillating circuit, the second pulse waveform quantity S2 output by the second LC oscillating circuit and the set first limit value and second limit value, the first state and the second state of the first inductor and the second inductor can be respectively determined. The state combination of the first inductor and the second inductor may include four types:

the first state combination is: a first state and a first state, which may be noted as 00;

the second state combination is as follows: a second state and a first state, which may be noted as 10;

and the third state combination: a second state and a second state, which may be noted as 11;

and the fourth state combination: the first state and the second state may be noted as 01.

A rotation direction obtaining module 430, configured to determine a rotation direction of the turntable according to a sequence of the state combinations of the first inductor and the second inductor. For example, when the order of the state combinations of the first inductor and the second inductor is the first state combination 00, the second state combination 10, the third state combination 11, and the fourth state combination 01, it can be determined that the rotation direction of the turntable is the forward direction. When the order of the state combinations of the first inductor and the second inductor is the first state combination 00, the fourth state combination 01, the third state combination 11, and the second state combination 10 in sequence, it can be determined that the rotation direction of the turntable is reverse.

Fig. 13 is a block diagram of an information acquisition apparatus according to a third exemplary embodiment of the present application.

According to some embodiments of the present application, there is also provided an information acquisition apparatus 500 of the nonmagnetic metrology system 1000 shown in fig. 1, as shown in fig. 13, comprising a rotation number acquisition module 440 in addition to the modules in fig. 12.

A rotation turn number obtaining module 440, configured to determine a turn number of the turntable according to the cycle number of the state combination of the first inductor and the second inductor.

When the state combinations of the first inductor and the second inductor sequentially traverse the first state combination 00, the second state combination 10, the third state combination 11, and the fourth state combination 01, it can be determined that the turntable rotates one turn in the forward direction. When the state combinations of the first inductor and the second inductor sequentially traverse the first state combination 00, the fourth state combination 01, the third state combination 11 and the second state combination 10, it can be determined that the turntable reversely rotates for one turn. The number of turns of the turntable can be obtained through the traversal times of the combined state of the four devices.

The present application further provides an information acquisition electronic device 700 without magnetic metering. The electronic device 700 shown in fig. 14 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.

As shown in fig. 14, the electronic device 700 is embodied in the form of a general purpose computing device. The components of the electronic device 700 may include, but are not limited to: at least one processing unit 710, at least one memory unit 720, a bus 730 that couples various system components including the memory unit 720 and the processing unit 710, and the like.

The storage unit 720 stores program codes, which can be executed by the processing unit 710, so that the processing unit 710 executes the information acquisition method according to the above embodiments of the present application described in the present specification.

The storage unit 720 may include readable media in the form of volatile memory units, such as a random access memory unit (RAM)7201 and/or a cache memory unit 7202, and may further include a read only memory unit (ROM) 7203.

The memory unit 720 may also include programs/utilities 7204 having a set (at least one) of program modules 7205, such program modules 7205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.

Bus 730 may be any representation of one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

The electronic device 700 may also communicate with one or more external devices 7001 (e.g., touch screen, keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 700, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 700 to communicate with one or more other computing devices. Such communication may occur via an input/output (I/O) interface 750. Also, the electronic device 700 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the internet) via the network adapter 760. The network adapter 760 may communicate with other modules of the electronic device 700 via the bus 730. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the electronic device 700, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.

The application provides a no magnetism measurement system acquires carousel pivoted angle and acquires the direction of rotation and the number of rotations of carousel according to the even state combination of two 4 kinds of periods of inductance through gathering the square wave pulse quantity of two LC oscillating circuit outputs that become 90 degrees contained angles and arrange for the carousel center, and the precision is high, the robustness is better.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the description of the embodiments is only intended to facilitate the understanding of the methods and their core concepts of the present application. Meanwhile, a person skilled in the art should, according to the idea of the present application, change or modify the embodiments and applications of the present application based on the scope of the present application. In view of the above, the description should not be taken as limiting the application.

Claims

1. The utility model provides a no magnetism metering system for carousel formula metering device which characterized in that includes:

a turntable comprising a metal region and a non-metal region;

a first oscillating module comprising a first inductance;

a second oscillating module comprising a second inductance;

wherein the first inductor and the second inductor are arranged above the turntable,

2. The nonmagnetic metering system of claim 1, further comprising:

3. The nonmagnetic metering system of claim 1, further comprising:

4. The nonmagnetic metering system of claim 3, further comprising:

5. The nonmagnetic metering system of claim 4, further comprising:

and the encoder module is connected with the pulse counting module.

6. The nonmagnetic metering system of claim 5, further comprising:

7. The nonmagnetic metering system according to claim 6, wherein the nonmagnetic metering system collects the number of pulse waveforms output by the first oscillation module and the second oscillation module in real time in the process of uniform rotation of the turntable, so as to determine the rotation angle of the turntable relative to the initial position.

8. The nonmagnetic metering system according to claim 6, wherein the nonmagnetic metering system collects the number of pulse waveforms output by the first oscillation module and the second oscillation module in real time in the process of uniform rotation of the turntable, so as to determine the state combination of the first inductor and the second inductor.

9. The nonmagnetic metering system of claim 8, wherein the nonmagnetic metering system determines the direction of rotation of the turntable according to the order of the state combinations of the first and second inductors.

10. The nonmagnetic metering system of claim 8, wherein the nonmagnetic metering system determines the number of revolutions of the turntable according to the number of cycles of the state combination of the first and second inductors.