Detection devices and measuring instruments

Abstract

The present application provides a detection device and a measuring instrument. The detection device provided in the embodiment of the present application generates a pulse signal when the metal part on the moving part acts on the oscillation module, and processes the pulse signal output in response through the pulse processing module to generate a target characteristic signal, so that the counting module counts according to the target characteristic signal, and then determines the number of movements of the moving part. It can be seen that in this embodiment, the motion characteristics of the moving part are detected by the principle that the metal part affects the oscillation module to change the output characteristics of the pulse signal, without relying on the magnetic sampling method or the photoelectric sampling method, effectively avoiding the normal operation of the magnetic sampling method due to magnetic interference during the application process, and also avoiding the strict requirements of the photoelectric sampling method on the light intensity and the angle of light emission.

Description

Technical Field

[0001] The present application relates to the field of measurement technology, and in particular to a detection device and a measuring instrument. Background Art

[0002] With the rapid development of metering technology, automatic metering has been widely used in the gas meter and water meter industries to measure flow.

[0003] Currently, gas meter movement rotation counting is mostly achieved through Hall effect magnetic sampling or infrared light sampling. Hall effect magnetic sampling involves placing a magnet on the movement's rotating device and using a Hall element to detect the magnet's rotation to achieve counting. Infrared light sampling involves placing an infrared blocking component on the rotating device. This component reflects infrared light from the counter plate to the receiving tube, where it detects infrared pulses from the transmitting and receiving tubes to achieve counting.

[0004] However, magnetic sampling and measurement cannot avoid magnetic interference during use; while photoelectric sampling has strict requirements on light intensity and luminous angle, as well as strict requirements on production process, and environmental factors can easily cause inaccurate measurement.

[0005] Application Contents

[0006] The embodiments of the present application provide a detection device and a measuring instrument to replace magnetic sampling and photoelectric sampling solutions, thereby avoiding normal operation being affected by magnetic interference or ambient light interference during application.

[0007] In a first aspect, an embodiment of the present application provides a detection device, comprising: a moving component, an oscillation module, a pulse processing module, and a counting module;

[0008] The moving component is provided with a metal component, and the metal component acts on the oscillation module to generate a pulse signal when moving with the moving component;

[0009] The pulse processing module is used to process the pulse signal to generate a target characteristic signal;

[0010] The counting module is used to count according to the target characteristic signal, wherein the counting result is used to represent the number of movements of the moving component.

[0011] In a possible design, when the positional relationship between the metal component and the oscillation module meets a preset condition, a target pulse feature is generated in the pulse signal, and the target pulse feature is used to generate the target feature signal.

[0012] In one possible design, the target pulse characteristic is a pulse attenuation characteristic.

[0013] In one possible design, the pulse decay characteristic is used to determine the number of pulses in the target characteristic signal.

[0014] In one possible design, the oscillation module includes a first oscillation module and a second oscillation module;

[0015] The first oscillation module and the second oscillation module are arranged at a preset angle.

[0016] In a possible design, when the moving component moves, it acts on the first oscillation module and / or the second oscillation module through the metal component to generate the pulse signals with different characteristics at different times.

[0017] In one possible design, if the metal component acts on the first oscillation module, the pulse signal output by the first oscillation module is in a first characteristic state; if the metal component does not act on the first oscillation module, the pulse signal output by the first oscillation module is in a second characteristic state; and / or,

[0018] If the metal component acts on the second oscillation module, the pulse signal output by the second oscillation module is in a first characteristic state; if the metal component does not act on the second oscillation module, the pulse signal output by the second oscillation module is in a second characteristic state.

[0019] In a possible design, the moving component is a rotating device, and the rotating device performs rotational motion along an axis;

[0020] The counting result is used to represent the number of rotations of the rotating device;

[0021] The pulse feature in the target characteristic signal is used to characterize a characteristic state change of the first oscillation module or the second oscillation module;

[0022] The number of rotations is determined according to a relationship between a characteristic state combination formed by the first oscillation module and the second oscillation module and a preset periodic characteristic state condition.

[0023] In one possible design, the detection device further includes: a signal driving module and a switching switch;

[0024] The signal driving module is used to drive the oscillation module to generate a pulse signal;

[0025] The driving module is connected to the first oscillation module or the second oscillation module through the switch.

[0026] In one possible design, the counting module uses the number of pulses in the last drive cycle in the previous drive window as a comparison benchmark for the number of pulses in the next drive window, so as to determine the working state of the switching switch according to the change state of the number of pulses between two adjacent drive windows.

[0027] In one possible design, if it is detected that the current pulse number is inconsistent with the current pulse number comparison benchmark in any driving cycle of the driving window, the switching switch is switched and the current pulse number is saved as the pulse number comparison benchmark for the next driving window.

[0028] In a second aspect, an embodiment of the present application further provides a measuring instrument, comprising: any possible detection device as described in the first aspect.

[0029] The present invention provides a detection device and metering instrument. When a metal component on a moving part acts on an oscillation module, a pulse signal is generated. The pulse processing module processes the responsive pulse signal to generate a target characteristic signal, which enables a counting module to count the number of times the moving part has moved. This embodiment utilizes the principle of the metal component influencing the oscillation module to change the pulse signal output characteristics to detect the motion characteristics of the moving part. This eliminates the need to rely on magnetic or photoelectric sampling methods, effectively avoiding the impact of magnetic interference on normal operation of the magnetic sampling method during application. It also avoids the strict requirements of the photoelectric sampling method for light intensity and angle of illumination. Furthermore, since the electronic components in the oscillation module are less susceptible to failure or performance degradation, the stability of the detection device can be ensured. Furthermore, due to the simple structure of the oscillation module, its power consumption during application is relatively low compared to that of magnetic induction elements or photoelectric elements, effectively reducing the power consumption of the product to which it is applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0031] Figure 1 is a schematic structural diagram of a detection device shown in the first embodiment of the present application;

[0032] Figure 2 is a schematic structural diagram of a detection device shown in the second embodiment of the present application;

[0033] Figure 3is a schematic diagram of the layout of the rotating device shown in the second embodiment of the present application;

[0034] Figure 4 is a schematic diagram of a driving pulse shown in the second embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of an unattenuated pulse waveform shown in the second embodiment of the present application;

[0036] Figure 6 FIG. 1 is a schematic diagram of a pulse waveform after attenuation shown in the second embodiment. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] The terms "first," "second," "third," "fourth," etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential sequence. It should be understood that the numbers used in this way are interchangeable where appropriate so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or apparatus.

[0039] Figure 1 This is a schematic diagram of the structure of the detection device shown in the first embodiment of this application. Figure 1 As shown, the detection device provided in this embodiment includes: a moving component 100, an oscillation module 200, a pulse processing module 300, and a counting module 400. The moving component 100 may be provided with a metal component, which acts on the oscillation module 200 to generate a pulse signal when the moving component 100 moves. The pulse processing module 300 then processes the pulse signal to generate a target characteristic signal. The counting module 400 then counts the target characteristic signal, with the count result used to represent the number of times the moving component 100 has moved.

[0040] It is worth noting that the metal component can be set on the meter used above, for example, the metal component can be set on the rotating part of the meter, specifically, it can be set on the turntable of the rotating device. When the metal component rotates with the rotating device, the relative position relationship between it and the oscillation module 200 will also change. If the metal component rotates to the target position with the rotating part so that the relative position relationship between the metal component and the oscillation module 200 meets the preset conditions (for example, the metal component rotates to the top of the oscillation module 200), then at this time, the metal component will act on the oscillation module 200 to output a corresponding pulse signal, and the pulse processing module will process the pulse signal to obtain the target characteristic signal.

[0041] Specifically, when the oscillation module 200 is not affected by a metal component, it outputs a stable original signal. However, when the oscillation module 200 is affected by a metal component, the original signal is affected and changes, which is reflected in the change of signal characteristics, generating a recognizable pulse signal. For example, the recognizable pulse signal can be generated by utilizing the principle that the proximity of a metal component to an LC oscillator circuit causes the oscillating sine wave to attenuate.

[0042] The pulse signal output by the oscillation module 200 can generate the above-mentioned target characteristic signal after being processed by the pulse processing module, and then the counting module can be used to determine the number of movements of the moving part (for example, the number of rotations of the turntable) based on the target characteristic signal, and then determine the measurement result based on the determined number of movements and the preset measurement rules (for example, the total flow rate is determined based on the number of rotations of the turntable and the flow rate corresponding to one rotation).

[0043] In this embodiment, when a metal component on a moving part acts on the oscillation module, a pulse signal is generated. The pulse processing module processes the resulting pulse signal to generate a target characteristic signal, enabling the counting module to count the number of times the moving part has moved. This embodiment utilizes the principle of the metal component influencing the oscillation module to change the pulse signal output characteristics to detect the motion characteristics of the moving part. This eliminates the need for magnetic or photoelectric sampling methods, effectively avoiding the impact of magnetic interference on normal operation of the magnetic sampling method during application. It also avoids the strict requirements of the photoelectric sampling method for light intensity and angle of illumination. Furthermore, since the electronic components in the oscillation module are less susceptible to failure or performance degradation, the stability of the detection device can be ensured. Furthermore, due to the simple structure of the oscillation module, its power consumption during application is relatively low compared to that of magnetic or photoelectric elements, effectively reducing the power consumption of the product in which it is used.

[0044] Figure 2FIG. 1 is a schematic diagram of the structure of the detection device shown in the second embodiment of the present application. Figure 2 As shown, the detection device provided in this embodiment includes: a rotating device 100 , an oscillation module 200 , a signal driving module 500 , a pulse processing module 300 and a counting module 400 .

[0045] The oscillation module 200 is configured to generate a sinusoidal oscillation waveform and sense the approach of a metal component. Optionally, the oscillation module 200 may include a first oscillation module 210 and a second oscillation module 220. Furthermore, the first oscillation module 210 and the second oscillation module 220 may be arranged at a preset angle, i.e., the first oscillation module 210 and the second oscillation module 220 are arranged at a preset angle relative to the rotation axis of the rotating device 100. It is worth noting that the number of oscillation modules included in the oscillation module 200 and their specific arrangement can be adaptively configured based on the detection requirements. In this embodiment, to illustrate the principle, an example is provided in which the oscillation module 200 includes two oscillation modules.

[0046] Figure 3 This is a schematic diagram of the layout of the rotating device shown in the second embodiment of this application. Figure 3 As shown, in this embodiment, the moving component may be a rotating device 100, which performs rotational motion along an axis, wherein the counting result is used to represent the number of rotations of the rotating device 100. It is worth noting that the rotating device 100 may be provided on an applied meter, for example, the rotating device 100 may be a rotating part provided on the meter, such as a turntable.

[0047] If the oscillation module 200 includes a first oscillation module 210 and a second oscillation module 220, the rotating device 100 is a rotating disk. The metal component 110 covers half of the circumference of the rotating disk, while the non-metal component 120 covers the other half. Furthermore, the first inductor 211 on the first oscillation module 210 and the center of the rotating disk form a first line segment, and the first inductor 221 on the second oscillation module 220 and the center of the rotating disk form a second line segment. The angle between the first and second line segments can be 120 degrees.

[0048] When the positional relationship between the metal component and oscillation module 200 meets preset conditions, a target pulse feature is generated in the pulse signal. The target pulse feature is used to generate a target characteristic signal. When this is achieved by leveraging the principle that the proximity of a metal component to an LC oscillator circuit causes the oscillating sine wave to decay, the target pulse feature is a pulse decay feature, which is then used to determine the number of pulses in the target characteristic signal.

[0049] When the rotating device 100 is in motion, the metal component acts on the first oscillation module 210 and / or the second oscillation module 220, thereby generating pulse signals with different characteristics at different times. Specifically, if the metal component acts on the first oscillation module 210, the pulse signal output by the first oscillation module 21 is in a first characteristic state; if the metal component does not act on the first oscillation module 210, the pulse signal output by the first oscillation module 21 is in a second characteristic state; and / or if the metal component acts on the second oscillation module 220, the pulse signal output by the second oscillation module 220 is in the first characteristic state; if the metal component does not act on the second oscillation module 220, the pulse signal output by the second oscillation module 220 is in the second characteristic state.

[0050] For example, when the rotating device 100 rotates one circle, the two inductors will produce four combination states. If 1 represents that the inductor is located above the metal sheet, that is, the output pulse signal is in the first characteristic state, it can be determined as 1, and 0 represents that the metal sheet is located above the non-metal sheet, that is, the output pulse signal is in the second characteristic state, which can be determined as 0. Then the four states generated by the turntable rotating one circle are: forward 11→10→00→01→11, reverse 11→01→00→10→11, and thus counting is performed by detecting the above states.

[0051] Alternatively, the size and arrangement of the metal components on the rotating device 100, the relative position between the turntable and the inductor, and the number of inductors can be varied to produce different combinations of inductor oscillation states per one turntable rotation. For example, if the metal components are one-third of a circle and three inductors are used, the inductance state combination produced per one turntable rotation is: 100 → 001 → 010 → 100.

[0052] The pulse characteristics in the target characteristic signal are used to characterize the characteristic state changes of the first oscillation module 210 or the second oscillation module 220, so as to determine the number of rotations based on the relationship between the characteristic state combination formed by the first oscillation module 210 and the second oscillation module 220 and the preset periodic characteristic state conditions.

[0053] In this embodiment, the number of rotations is counted by detecting the above-mentioned inductance oscillation state combination. Only the two inductance state combinations to be detected are adaptively changed, and the setting mode of the rotating device 100 is adaptively changed to meet different actual detection requirements.

[0054] The signal driver module 500 is used to drive the two oscillator modules to generate oscillation pulses and connect the two oscillator circuits in a time-sharing manner via a switch. The pulse processing module 300 is used to compare and process the oscillation pulses. Specifically, the first pulse processing module 310 is used to compare and process the oscillation pulses output by the first oscillation module, and the second pulse processing module 320 is used to compare and process the oscillation pulses output by the second oscillation module.

[0055] In addition, the counting module 400 is used to collect and detect changes in the number of oscillation pulses. A metal component is placed on the rotating device 100, and the number of rotations is detected by using the changes in the number of oscillation pulses within a certain time window generated by the metal component approaching the oscillating inductor.

[0056] In this embodiment, the signal driving module 500 is used to drive the oscillation module 200 to generate a pulse signal. Figure 4 Schematic diagram of the driving pulse shown in the second embodiment of the present application. Figure 4 As shown, every n driving pulses (representing a driving window) or less than n pulses (switching immediately when the number of pulses changes) controls the switching switch 600 to be connected to the driven oscillation module, and the value of n is determined according to the maximum rotational angular velocity of the rotation module and the oscillation speed of the oscillation module.

[0057] When a decrease or increase in the number of pulses in a certain drive cycle is detected, the counting module 400 automatically obtains the number of pulses sampled in the last drive cycle of the previous drive window as a comparison benchmark for the number of pulses in the next drive window. For example, if n=2, during the second drive cycle of the first oscillation module 210, the counting module detects a decrease or increase in the number of pulses compared to the number of oscillation pulses in the last drive cycle of the previous drive window stored by the counting module, indicating that the rotating device has rotated and caused a change in the pulse state. After the detection is completed, the changed pulse number value is stored as a comparison benchmark for the next window and the driving module switch is immediately switched to the second oscillation module 220. If a change in the number of pulses is detected in the first drive cycle of the first oscillation module 210, the pulse number is directly stored and used as the comparison benchmark for the next drive window, and the switch is directly switched to the second oscillation module 220 without the second drive cycle. If no change in the number of pulses is detected in either drive cycle, the currently stored pulse number benchmark is not changed and the switch is directly switched to the second oscillation module 220. Similarly, the same detection can be continued on the second oscillation module 210.

[0058] After receiving the driving pulse from the signal driving module 500, the oscillation module 200 generates a gradually decaying sinusoidal oscillation waveform. Figure 5 This is a schematic diagram of an unattenuated pulse waveform shown in the second embodiment of the present application; Figure 6FIG. 1 is a schematic diagram of a pulse waveform after attenuation shown in the second embodiment. Figure 5-Figure 6 As shown, the pulse processing module 320 can generate a corresponding square wave pulse output, and the counting module 400 will count and compare the pulse according to the driving cycle.

[0059] Specifically, the counting module 400 uses the pulse count of the last drive cycle in the previous drive window as a comparison benchmark for the pulse count in the next drive window. This determines the operating state of the switch based on the pulse count variation between two adjacent drive windows. Specifically, within each drive cycle, the counting module detects the pulse count, calculates the rotational state, and outputs the number of rotations based on this state. Based on the pulse count variation and the drive window value, the control signal driving module 500 switches the connection to the oscillating module.

[0060] Furthermore, if the current pulse count is detected to be inconsistent with the current pulse count comparison benchmark within any drive cycle of the drive window, the switch is switched and the current pulse count is saved as the pulse count comparison benchmark for the next drive window. Specifically, during each reset (reset is performed when both inductors are not above the metal sheet), the device detects the number of oscillation pulses of each oscillation module and uses this as the benchmark value for comparing the number of pulses in the next detection window. When the number of pulses is less than this benchmark value, it indicates that the inductor has entered the area above the metal sheet. The counting module 400 then stores this pulse count value as the benchmark value for comparing the number of pulses in the next drive window.

[0061] Therefore, the reference value for pulse number comparison of the counting module 400 can change in real time, avoiding the problem of inaccurate counting caused by the influence of installation accuracy, environmental parameters (such as temperature) changes on the oscillation waveform amplitude and pulse number.

[0062] Continue to refer to Figure 5 According to the unattenuated pulse waveform, the number of pulses is 8. This value is the comparative reference value obtained in the previous driving window. When the turntable rotates, the oscillation sine waveform of the oscillation module 200 is attenuated, resulting in a decrease in the number of square wave pulses generated after processing by the pulse processing module 300. Figure 6 The 5 pulses shown in the figure, at this time the counting module will store the oscillation state of the oscillation module from state 0 to state 1. When the oscillation state combination of the two oscillation modules completes the state change of 11→10→00→01→11, it means that the base meter rotating device has rotated one circle in the forward direction. When the state change of 11→01→00→10→11 is completed, it means that the base meter rotating device has rotated one circle in the reverse direction. It is worth noting that Figure 5-Figure 6 It is only used to illustrate the counting principle and does not represent the actual pulse waveform and number.

[0063] In addition, the present application also provides a meter, comprising: the detection device provided in any of the above embodiments. Specifically, the meter can be a gas meter or a water meter.

[0064] In the description of this application, it should be understood that the terms used, such as "center", "length", "width", "thickness", "top", "bottom", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "axial", and "circumferential", to indicate orientations or positional relationships may be based on the orientations or positional relationships shown in the accompanying drawings. These are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the position or component referred to must have a specific orientation, a specific structure, and operation, and therefore should not be understood as a limitation on this application.

[0065] In this application, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," etc. should be understood broadly. For example, they can mean fixed, removable, or integrated; they can mean mechanical, electrical, or communicative; they can mean direct or indirect connection through an intermediate medium, allowing for internal communication between two components or for interaction between the two components. A person skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances. Unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but contacting via another feature between them. Furthermore, "above," "above," and "above" a first feature can include the first feature being directly above or diagonally above the second feature, or simply mean that the first feature is at a higher level than the second feature. "Below," "below," and "below" a first feature can include the first feature being directly below or diagonally below the second feature, or simply mean that the first feature is at a lower level than the second feature.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A detection device, characterized in that: include: Moving parts, oscillation module, pulse processing module, counting module, signal driving module and switching switch; The moving component is provided with a metal component, and the metal component acts on the oscillation module to generate a pulse signal when moving with the moving component; The signal driving module is used to drive the oscillation module to generate a pulse signal, and to switch the different oscillation circuits in the oscillation module in a time-sharing manner through the switching switch; The pulse processing module is used to process the pulse signal to generate a target characteristic signal; The counting module uses the number of pulses in the last driving cycle in the previous driving window as a comparison benchmark for the number of pulses in the next driving window, so that when the number of pulses in the driving cycle of the next window changes compared with the comparison benchmark, the working state of the switching switch is switched, and counting is performed according to the target characteristic signal, wherein the counting result is used to characterize the number of movements of the moving part. Within a driving window, the switching switch remains connected to the same oscillation module, a driving window includes at least one driving cycle, and a driving cycle includes multiple pulses.

2. The detection device according to claim 1, characterized in that When the positional relationship between the metal component and the oscillation module satisfies a preset condition, a target pulse feature is generated in the pulse signal, and the target pulse feature is used to generate the target feature signal.

3. The detection device according to claim 2, characterized in that The target pulse characteristic is a pulse decay characteristic.

4. The detection device according to claim 3, characterized in that The pulse decay characteristic is used to determine the number of pulses in the target characteristic signal.

5. The detection device according to any one of claims 1 to 4, characterized in that: The oscillation module includes a first oscillation module and a second oscillation module; The first oscillation module and the second oscillation module are arranged at a preset angle.

6. The detection device according to claim 5, characterized in that When the moving component moves, it acts on the first oscillation module and / or the second oscillation module through the metal component, so as to generate the pulse signals with different characteristics at different times.

7. The detection device according to claim 6, characterized in that If the metal component acts on the first oscillation module, the pulse signal output by the first oscillation module is in a first characteristic state; if the metal component does not act on the first oscillation module, the pulse signal output by the first oscillation module is in a second characteristic state; and / or, If the metal component acts on the second oscillation module, the pulse signal output by the second oscillation module is in a first characteristic state; if the metal component does not act on the second oscillation module, the pulse signal output by the second oscillation module is in a second characteristic state.

8. The detection device according to claim 7, characterized in that The moving part is a rotating device, and the rotating device performs rotational motion along an axis; The counting result is used to represent the number of rotations of the rotating device; The pulse feature in the target characteristic signal is used to characterize a characteristic state change of the first oscillation module or the second oscillation module; The number of rotations is determined according to a relationship between a characteristic state combination formed by the first oscillation module and the second oscillation module and a preset periodic characteristic state condition.

9. The detection device according to claim 1, characterized in that If it is detected that the current pulse number is inconsistent with the current pulse number comparison benchmark in any driving cycle of the driving window, the switch is switched and the current pulse number is saved as the pulse number comparison benchmark for the next driving window.

10. A measuring instrument, characterized in that: include: The detection device according to any one of claims 1 to 9.

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