阅读说明：本技术 一种抗磁感应式水表 (Anti-magnetic induction type water meter ) 是由 刘虎平 于 2020-07-07 设计创作，主要内容包括：本发明涉及水表技术领域,公开了一种抗磁感应式水表,包括壳体,所述壳体上设有仪表盘,所述仪表盘内设有采样指针,所述采样指针上设有圆弧金属片,所述采样指针的一侧设有抗磁感应模块,所述抗磁感应模块内设有MCU控制单元和雷达感应探头,所述MCU控制单元与雷达感应探头电连接,所述MCU控制单元包括电源电压稳恒电路、采样信号处理电路、信号转换电路、信号接收电路、电磁波发生电路和信号放大输出电路,所述雷达感应探头与采样指针组合成触发装置,所述电磁波发生电路与雷达感应探头连接用于探测电磁波返回信号。本发明通过通过采用雷达探测技术和将采样指针做成72度圆弧柱形的金属片,完全规避了外磁及电磁波的干扰。(The invention relates to the technical field of water meters, and discloses a diamagnetic induction type water meter which comprises a shell, wherein an instrument panel is arranged on the shell, a sampling pointer is arranged in the instrument panel, an arc metal sheet is arranged on the sampling pointer, a diamagnetic induction module is arranged on one side of the sampling pointer, an MCU control unit and a radar induction probe are arranged in the diamagnetic induction module, the MCU control unit is electrically connected with the radar induction probe, the MCU control unit comprises a power supply voltage stabilizing circuit, a sampling signal processing circuit, a signal conversion circuit, a signal receiving circuit, an electromagnetic wave generating circuit and a signal amplification output circuit, the radar induction probe and the sampling pointer form a trigger device, and the electromagnetic wave generating circuit is connected with the radar induction probe and used for detecting an electromagnetic wave return signal. According to the invention, by adopting a radar detection technology and making the sampling pointer into a 72-degree arc cylindrical metal sheet, the interference of external magnetism and electromagnetic wave is completely avoided.)

1. An anti-magnetic induction type water meter is characterized in that: including casing (1), be equipped with panel board (2) on casing (1), be equipped with sampling pointer (25) in panel board (2), be equipped with circular arc sheetmetal (251) on sampling pointer (25), one side of sampling pointer (25) is equipped with anti-magnetism response module (22), be equipped with MCU the control unit and radar inductive probe in anti-magnetism response module (22), MCU the control unit is connected with radar inductive probe electricity, MCU the control unit includes steady circuit of power supply voltage, sampling signal processing circuit, signal conversion circuit, signal receiving circuit, electromagnetic wave generating circuit and signal amplification output circuit, radar inductive probe makes up trigger device with the sampling pointer, electromagnetic wave generating circuit is connected with radar inductive probe and is used for surveying the electromagnetic wave, and signal receiving circuit is connected with sampling signal processing circuit and is used for surveying the electromagnetic wave return signal, the sampling signal processing circuit is connected with the signal conversion circuit and used for converting analog signals and digital signals, the signal conversion circuit is connected with the signal amplification output circuit and used for amplifying and outputting signals, and the power supply voltage stabilizing circuit is simultaneously connected with the sampling signal processing circuit, the signal conversion circuit and the signal amplification output circuit and used for supplying power.

2. A diamagnetic induction type water meter according to claim 1, characterized in that: the arc metal sheet (251) is a 72-degree arc cylindrical metal sheet, the arc metal sheet (251) forms an arc cylindrical electromagnetic receiving and reflecting structure, and when detecting electromagnetic waves, the electromagnetic waves are sent to the metal sheet to form echoes, the frequency, the phase and the amplitude of the transmitted waves are changed, so that the transmitting circuit generates sampling signals.

3. A diamagnetic induction type water meter according to claim 1, characterized in that: and a tachometer flowmeter is arranged on the other side of the anti-magnetic induction module (22).

4. A diamagnetic induction type water meter according to claim 1, characterized in that: and a digital display screen (21) is also arranged on the instrument panel (2).

5. A diamagnetic induction type water meter according to claim 1, characterized in that: and the sampling pointer (25) is fixedly connected with a water meter core shaft in the shell.

6. A diamagnetic induction type water meter according to claim 1, characterized in that: the outside of casing (1) still is equipped with RS485 interface, wireless LORA and NB thing networking transmission interface.

Technical Field

The invention relates to the technical field of water meters, in particular to a diamagnetic induction type water meter.

Background

Disclosure of Invention

In view of the above, the present invention provides an anti-magnetic induction water meter, which completely avoids the interference of external magnetism and frequency by adopting a radar detection technology and making a sampling pointer into a 72-degree arc cylindrical metal sheet, thereby achieving true anti-magnetic anti-frequency interference, avoiding the metering error influenced by the external magnetism interference and jitter, and making the water meter more accurate in metering. The signal source is divided into 6 equal parts (12 degrees and one equal part) and the signal is strongest when the signal is positive 72 degrees, a plurality of binary codes are formed, when the metal sheet enters a detection area, the signal is changed from weak to strong, when the metal sheet leaves the detection area, the signal is changed from strong to weak, positive and negative rotation is judged according to the code set by the MCU, and the metering error caused by the positive and negative rotation is solved through the code.

The invention solves the technical problems by the following technical means:

the invention relates to a diamagnetic induction type water meter, which comprises a shell, wherein an instrument panel is arranged on the shell, a sampling pointer is arranged in the instrument panel, an arc metal sheet is arranged on the sampling pointer, a diamagnetic induction module is arranged on one side of the sampling pointer, an MCU control unit and a radar induction probe are arranged in the diamagnetic induction module, the MCU control unit is electrically connected with the radar induction probe, the MCU control unit comprises a power supply voltage stabilizing circuit, a sampling signal processing circuit, a signal conversion circuit, a signal receiving circuit, an electromagnetic wave generating circuit and a signal amplification output circuit, the radar induction probe and the sampling pointer are combined into a trigger device, the electromagnetic wave generating circuit is connected with the radar induction probe and is used for detecting electromagnetic waves, the signal receiving circuit is connected with the sampling signal processing circuit and is used for detecting return signals of the electromagnetic waves, the sampling signal processing circuit is connected with the signal conversion circuit and is used for realizing, the signal conversion circuit is connected with the signal amplification output circuit to realize the amplification output of signals, and the power supply voltage stabilizing circuit is simultaneously connected with the sampling signal processing circuit, the signal conversion circuit and the signal amplification output circuit to realize the power supply. The MCU control unit comprises a power supply stable voltage processing circuit, a meter shell line is connected to replace an equipotential body potential reference point, a radar induction probe is used for detecting a magnetic wave generating circuit, and a receiving circuit for detecting the magnetic wave and a metal sheet reflection and induction signal is used for detecting the electromagnetic wave and sending the electromagnetic wave to the metal sheet to form an echo, so that the frequency and the phase of a transmitted wave are changed, the amplitude is changed, when the metal sheet enters a detection area, the amplitude is reduced instantly, the instant frequency is increased, and then the phase shift change of the detected wave is generated, and the detected wave is processed by a sampling signal and then sent to an analog signal to digital signal conversion circuit, so that the transmitting circuit generates the sampling signal which is amplified and processed by a signal output circuit and then. The non-magnetic induction type (anti-magnetic and anti-jitter) water meter realizes a sampling mode free from the influence of a strong magnetic field, directly converts a sampling analog signal into a digital signal and outputs the digital signal in a digital signal mode so as to achieve the direct receiving of an upper circuit, facilitate information processing and data transmission and communication, and fully play the characteristics of low power consumption, wide voltage supply and good anti-interference capability of a control circuit board; meanwhile, the non-magnetic induction type (diamagnetic) water meter device has a simple structure, is matched with a popular water meter structure, is convenient to install and is maintenance-free. Through a non-magnetic induction type (anti-magnetic and anti-shake) water meter signaling device, a sampling pointer is loaded on a water meter metering component structure to serve as a sampling signal trigger, the sampling signal trigger is of a plane or cylindrical structure, the surface of the sampling signal trigger is a metal sheet, a received electromagnetic wave buckling and scanning signal sent by a reflection sampling circuit is received, a complete metering signal is generated when the metal sheet of the trigger enters or leaves a detection scanning area, the complete metering signal is output as a digital wave after being processed by a circuit, and no resistance is generated on the water meter.

Further, install the sampling pointer on water gauge core pointer, the circular arc sheetmetal is the sheetmetal of 72 degrees circular arc cylindricality, installs anti-magnetic induction module next to water gauge sampling pointer the circular arc sheetmetal forms circular arc cylindricality electromagnetism and receives and the reflection configuration, sends the sheetmetal formation echo when surveying the electromagnetic wave, has changed launching wave frequency and phase place, amplitude for the circuit of sending a signal produces sampling signal.

Further, a tachometer flowmeter is arranged on the other side of the anti-magnetic induction module.

Furthermore, a digital display screen is also arranged on the instrument panel. And the digital display screen is connected with the MCU processor and is used for displaying the flow number.

Furthermore, the sampling pointer is fixedly connected with a water meter core shaft inside the shell.

Further, the outside of casing still is equipped with RS485 interface, wireless LORA and NB thing networking transmission interface. And the RS485 interface, the wireless LORA and NB internet of things transmission interface are connected with the MCU processor and are used for remotely transmitting water meter data.

The invention has the beneficial effects that: by adopting a radar detection technology and making the sampling pointer into a 72-degree arc cylindrical metal sheet, the interference of external magnetism and frequency is completely avoided, so that the true anti-magnetic anti-frequency interference is achieved, the metering error influenced by the external magnetism interference and the jitter is avoided, and the water meter metering is more accurate. The signal source is divided into 6 equal parts (12 degrees and one equal part) and the signal is strongest when the signal is positive 72 degrees, a plurality of binary codes are formed, when the metal sheet enters a detection area, the signal is changed from weak to strong, when the metal sheet leaves the detection area, the signal is changed from strong to weak, positive and negative rotation is judged according to the code set by the MCU, and the metering error caused by the positive and negative rotation is solved through the code.

Drawings

Fig. 1 is a schematic view of the overall structure of a diamagnetic induction type water meter of the invention;

FIG. 2 is a schematic structural diagram of a display panel according to the present invention;

wherein: the device comprises a shell 1, an instrument panel 2, a digital display screen 21, an anti-magnetic induction module 22, a sampling pointer disk 23, a pointer shaft 24, a sampling pointer 25, an arc metal sheet 251 and a needle point 252.

Detailed Description

The invention will be described in detail below with reference to the following figures and specific examples:

as shown in fig. 1-2, the diamagnetic induction type water meter of the invention comprises a housing 1, wherein a meter panel 2 is arranged on the housing 1, a sampling pointer 25 is arranged in the meter panel 2, an arc sheet metal 251 is arranged on the sampling pointer 25, a diamagnetic induction module 22 is arranged on one side of the sampling pointer 25, an MCU control unit and a radar induction probe are arranged in the diamagnetic induction module 22, the MCU control unit is electrically connected with the radar induction probe, the MCU control unit comprises a power supply voltage stabilizing circuit, a sampling signal processing circuit, a signal conversion circuit, a signal receiving circuit, an electromagnetic wave generating circuit and a signal amplification output circuit, the radar induction probe and the sampling pointer are combined into a trigger device, the electromagnetic wave generating circuit is connected with the radar induction probe for detecting electromagnetic waves, the signal receiving circuit is connected with the sampling signal processing circuit for detecting return signals of the electromagnetic waves, the sampling signal processing circuit is connected with the signal conversion circuit and used for converting analog signals and digital signals, the signal conversion circuit is connected with the signal amplification output circuit and used for amplifying and outputting signals, and the power supply voltage stabilizing circuit is simultaneously connected with the sampling signal processing circuit, the signal conversion circuit and the signal amplification output circuit and used for supplying power. The MCU control unit comprises a power supply stable voltage processing circuit, a meter shell line is connected to replace an equipotential body potential reference point, a radar induction probe is used for detecting a magnetic wave generating circuit, and a receiving circuit for detecting the magnetic wave and a metal sheet reflection and induction signal is used for detecting the electromagnetic wave and sending the electromagnetic wave to the metal sheet to form an echo, so that the frequency and the phase of a transmitted wave are changed, the amplitude is changed, when the metal sheet enters a detection area, the amplitude is reduced instantly, the instant frequency is increased, and then the phase shift change of the detected wave is generated, and the detected wave is processed by a sampling signal and then sent to an analog signal to digital signal conversion circuit, so that the transmitting circuit generates the sampling signal which is amplified and processed by a signal output circuit and then. The non-magnetic induction type (anti-magnetic and anti-jitter) water meter realizes a sampling mode free from the influence of a strong magnetic field, directly converts a sampling analog signal into a digital signal and outputs the digital signal in a digital signal mode so as to achieve the direct receiving of an upper circuit, facilitate information processing and data transmission and communication, and fully play the characteristics of low power consumption, wide voltage supply and good anti-interference capability of a control circuit board; meanwhile, the non-magnetic induction type (diamagnetic) water meter device has a simple structure, is matched with a popular water meter structure, is convenient to install and is maintenance-free. Through a non-magnetic induction type (anti-magnetic and anti-shake) water meter signaling device, a sampling pointer is loaded on a water meter metering component structure to serve as a sampling signal trigger, the sampling signal trigger is of a plane or cylindrical structure, the surface of the sampling signal trigger is a metal sheet, a received electromagnetic wave buckling and scanning signal sent by a reflection sampling circuit is received, a complete metering signal is generated when the metal sheet of the trigger enters or leaves a detection scanning area, the complete metering signal is output as a digital wave after being processed by a circuit, and no resistance is generated on the water meter.

In this embodiment, a sampling finger 25 is installed on a pointer of a water meter movement, the arc sheet metal 251 is a 72-degree arc-cylindrical sheet metal, an anti-magnetic induction module is installed beside the water meter sampling pointer 25, the arc sheet metal 251 forms an arc-cylindrical electromagnetic receiving and reflecting structure, and when detecting electromagnetic waves, the electromagnetic waves are sent to the sheet metal to form echoes, the frequency, the phase and the amplitude of the emitted waves are changed, so that a sending circuit generates sampling signals.

In this embodiment, a tachometer flowmeter is disposed on the other side of the anti-magnetic induction module 22.

In this embodiment, a digital display screen 21 is further disposed on the instrument panel 2. The digital display screen 21 is connected with the MCU processor and is used for displaying the flow number.

In this embodiment, the sampling pointer 25 is fixedly connected with a spindle of the water meter machine inside the housing 1.

In this embodiment, the outside of casing 1 still is equipped with RS485 interface, wireless LORA and NB thing networking transmission interface. And the RS485 interface, the wireless LORA and NB internet of things transmission interface are connected with the MCU processor and are used for remotely transmitting water meter data.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.