CN203069237U - Wireless ultrasonic level gauge - Google Patents

Wireless ultrasonic level gauge Download PDF

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CN203069237U
CN203069237U CN 201320073367 CN201320073367U CN203069237U CN 203069237 U CN203069237 U CN 203069237U CN 201320073367 CN201320073367 CN 201320073367 CN 201320073367 U CN201320073367 U CN 201320073367U CN 203069237 U CN203069237 U CN 203069237U
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卢超
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Shaanxi University of Technology
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Abstract

本实用新型公开了一种无线超声波液位计,包括信号检测发送模块和信号接收处理模块,信号检测发送模块包括第一微处理器、超声波探头、功率幅值放大电路、脉冲产生电路、放大电路、滤波电路、A/D转换电路、温度采集电路和无线发射模块,所述温度采集电路和无线发射模块均与第一微处理器相连,第一微处理器控制脉冲产生电路产生信号后,经过功率幅值放大电路和超声波探头连接,超声波探头发出回波信号经过放大电路、滤波电路、A/D转换电路后和第一微处理器相连接,信号接收处理模块包括第二微处理器、无线接收模块、USB接口、按键模块、显示模块、报警模块和存储模块,无线接收模块、按键模块、显示模块、报警模块和存储模块均与第二微处理器相连,第二微处理器通过USB接口和PC机连接。本实用新型设计新颖,功能强大,能够实时测量液位,无线发射模块与无线接收模块之间无线通讯,移动性好,具有应用推广价值。

Figure 201320073367

The utility model discloses a wireless ultrasonic liquid level gauge, which comprises a signal detection and sending module and a signal receiving and processing module. The signal detection and sending module includes a first microprocessor, an ultrasonic probe, a power amplitude amplification circuit, a pulse generation circuit, and an amplification circuit. , filter circuit, A/D conversion circuit, temperature acquisition circuit and wireless transmission module, the temperature acquisition circuit and wireless transmission module are all connected with the first microprocessor, after the first microprocessor controls the pulse generation circuit to generate the signal, after The power amplitude amplification circuit is connected with the ultrasonic probe, and the echo signal sent by the ultrasonic probe is connected with the first microprocessor after passing through the amplification circuit, filter circuit, and A/D conversion circuit, and the signal receiving and processing module includes a second microprocessor, a wireless The receiving module, the USB interface, the key module, the display module, the alarm module and the storage module, the wireless receiving module, the key module, the display module, the alarm module and the storage module are all connected to the second microprocessor, and the second microprocessor is connected through the USB interface Connect with PC. The utility model is novel in design, powerful in function, capable of real-time measurement of the liquid level, wireless communication between the wireless transmitting module and the wireless receiving module, good in mobility, and has the value of application and popularization.

Figure 201320073367

Description

无线超声波液位计Wireless Ultrasonic Level Gauge

技术领域: Technical field:

本实用新型涉及液位计,具体来说为一种无线超声波液位计。  The utility model relates to a liquid level gauge, in particular to a wireless ultrasonic liquid level gauge. the

背景技术: Background technique:

液位测量在工业生产过程中被广泛应用,目前液位测量方法已经有多种,比如利用人工检尺、玻璃管、浮子式、电容法、超声波、雷达、光纤等来测量液位。实际应用中需对密闭容器内的液体液位进行精确测量,由于这些液体一般都是易爆、易挥发、强腐蚀及有毒性液体,给传统的接触式液位检测带来一定难度,实现无接触、智能化、高精度、低功耗是液位计的发展方向,由于超声波的速度与光速相比要小的多,传播时间比较容易检测,并且易于定向发射,方向性好,强度好控制,解决了压力变送器、电容式、浮子式等测量方式带来的缠绕、泄露、接触介质、维护昂贵等麻烦,有明显的优势和广阔的发展前景。  Liquid level measurement is widely used in industrial production processes. At present, there are many liquid level measurement methods, such as using manual dipstick, glass tube, float type, capacitance method, ultrasonic, radar, optical fiber, etc. to measure liquid level. In practical applications, it is necessary to accurately measure the liquid level in a closed container. Since these liquids are generally explosive, volatile, highly corrosive and toxic liquids, it brings certain difficulties to the traditional contact liquid level detection. Contact, intelligence, high precision, and low power consumption are the development directions of liquid level gauges. Since the speed of ultrasonic waves is much smaller than the speed of light, the propagation time is easier to detect, and it is easy to directional launch, with good directionality and good intensity control. , It solves the troubles of winding, leakage, contact with medium, expensive maintenance and other troubles caused by pressure transmitters, capacitive, float and other measurement methods, and has obvious advantages and broad development prospects. the

设计一种造价低廉、使用方便且测量准确的超声波液位计,同时把无线通信技术应用到测量中,也可以吧信息传入电脑,再利用PC机的分析软件对其进行实时监测、分析和处理,显示液位曲线,这种液位计操作简便、运行可靠,是极为有意义的,也是当今测试仪器高速、便捷、网络化发展的一个重要方向。  Design a low-cost, easy-to-use and accurate ultrasonic liquid level gauge. At the same time, wireless communication technology is applied to the measurement, and the information can also be transmitted to the computer, and then the analysis software of the PC is used for real-time monitoring, analysis and analysis. Processing and displaying the liquid level curve, this kind of liquid level meter is easy to operate and reliable in operation, which is extremely meaningful, and it is also an important direction for the development of high-speed, convenient and networked testing instruments today. the

发明内容: Invention content:

本实用新型要解决的技术问题是:提供一种无线超声波液位计,可对液位变化情况进行实时自动监测。  The technical problem to be solved by the utility model is to provide a wireless ultrasonic liquid level gauge, which can automatically monitor the change of the liquid level in real time. the

为了实现上述目的,本实用新型采用的技术方案是:无线超声波液位计,包括信号检测发送模块和信号接收处理模块,信号检测发送模块包括第一微处 理器、超声波探头、功率幅值放大电路、脉冲产生电路、放大电路、滤波电路、A/D转换电路、温度采集电路和无线发射模块,所述温度采集电路和无线发射模块均与第一微处理器相连,第一微处理器控制脉冲产生电路产生信号后,经过功率幅值放大电路和超声波探头连接,超声波探头发出回波信号经过放大电路、滤波电路、A/D转换电路后和第一微处理器相连接,信号接收处理模块包括第二微处理器、无线接收模块、USB接口、按键模块、显示模块、报警模块和存储模块,无线接收模块、按键模块、显示模块、报警模块和存储模块均与第二微处理器相连,第二微处理器通过USB接口和PC机连接。  In order to achieve the above object, the technical solution adopted in the utility model is: a wireless ultrasonic liquid level gauge, including a signal detection and sending module and a signal receiving and processing module, and the signal detection and sending module includes a first microprocessor, an ultrasonic probe, and a power amplitude amplifier circuit, a pulse generating circuit, an amplifying circuit, a filter circuit, an A/D conversion circuit, a temperature acquisition circuit and a wireless transmission module, the temperature acquisition circuit and the wireless transmission module are all connected to the first microprocessor, and the first microprocessor controls After the pulse generation circuit generates the signal, it is connected to the ultrasonic probe through the power amplitude amplification circuit, and the echo signal sent by the ultrasonic probe is connected to the first microprocessor after passing through the amplification circuit, filter circuit, and A/D conversion circuit, and the signal receiving and processing module It includes a second microprocessor, a wireless receiving module, a USB interface, a key module, a display module, an alarm module and a storage module, and the wireless receiving module, the key module, the display module, the alarm module and the storage module are all connected to the second microprocessor, The second microprocessor is connected with the PC through the USB interface. the

作为优选,超声波探头为压电陶瓷一体式超声波传感器。  Preferably, the ultrasonic probe is a piezoelectric ceramic integrated ultrasonic sensor. the

作为优选,温度采集电路为数字式温度传感器,起温度补偿作用。  Preferably, the temperature acquisition circuit is a digital temperature sensor, which plays a role of temperature compensation. the

作为优选,报警模块为语音报警器。  Preferably, the alarm module is a voice alarm. the

作为优选,显示模块为LCD显示屏。  Preferably, the display module is an LCD display. the

作为优选,无线发射模块与无线接收模块相匹配且之间无线通讯。  Preferably, the wireless transmitting module is matched with the wireless receiving module and communicates wirelessly. the

与现有技术相比,本实用新型的优点在于:设计新颖,功能强大,能够实时测量液位,无线发射模块与无线接收模块之间无线通讯,移动性好,具有应用推广价值。  Compared with the prior art, the utility model has the advantages of novel design, powerful functions, real-time liquid level measurement, wireless communication between the wireless transmitting module and the wireless receiving module, good mobility, and application promotion value. the

附图说明: Description of drawings:

图1为本实用新型的信号检测发送模块结构示意图;  Fig. 1 is the structural representation of the signal detection sending module of the present utility model;

图2为本实用新型的信号接收处理模块结构示意图。  Fig. 2 is a schematic structural diagram of the signal receiving and processing module of the present invention. the

具体实施方式: Detailed ways:

下面结合附图和实施例对本实用新型进一步说明。本实施例仅仅是对本实用新型实施方式的描述,并不对本实用新型的范围有任何限制。  Below in conjunction with accompanying drawing and embodiment the utility model is further described. This embodiment is only a description of the implementation of the utility model, and does not limit the scope of the utility model in any way. the

本实用新型包括信号检测发送模块和信号接收处理模块,信号检测发送模 块包括第一微处理器、超声波探头、功率幅值放大电路、脉冲产生电路、放大电路、滤波电路、A/D转换电路、温度采集电路和无线发射模块,所述温度采集电路和无线发射模块均与第一微处理器相连,第一微处理器控制脉冲产生电路产生信号后,经过功率幅值放大电路和超声波探头连接,超声波探头发出回波信号经过放大电路、滤波电路、A/D转换电路后和第一微处理器相连接,信号接收处理模块包括第二微处理器、无线接收模块、USB接口、按键模块、显示模块、报警模块和存储模块,无线接收模块、按键模块、显示模块、报警模块和存储模块均与第二微处理器相连,第二微处理器通过USB接口和PC机连接。超声波探头为压电陶瓷一体式超声波传感器。温度采集电路为数字式温度传感器,起温度补偿作用。报警模块为语音报警器。显示模块为LCD显示屏。无线发射模块与无线接收模块相匹配且之间无线通讯。  The utility model includes a signal detection and sending module and a signal receiving and processing module, and the signal detection and sending module includes a first microprocessor, an ultrasonic probe, a power amplitude amplification circuit, a pulse generation circuit, an amplification circuit, a filter circuit, and an A/D conversion circuit , a temperature acquisition circuit and a wireless transmission module, the temperature acquisition circuit and the wireless transmission module are all connected to the first microprocessor, and after the first microprocessor controls the pulse generation circuit to generate the signal, it is connected to the ultrasonic probe through the power amplitude amplification circuit The echo signal sent by the ultrasonic probe is connected to the first microprocessor after passing through the amplifier circuit, the filter circuit, and the A/D conversion circuit. The signal receiving and processing module includes a second microprocessor, a wireless receiving module, a USB interface, a button module, The display module, the alarm module and the storage module, the wireless receiving module, the button module, the display module, the alarm module and the storage module are all connected with the second microprocessor, and the second microprocessor is connected with the PC through the USB interface. The ultrasonic probe is a piezoelectric ceramic integrated ultrasonic sensor. The temperature acquisition circuit is a digital temperature sensor, which plays the role of temperature compensation. The alarm module is a voice alarm. The display module is an LCD display. The wireless transmitting module matches with the wireless receiving module and communicates wirelessly therebetween. the

优选的是,所述的微处理器选用STC89C52单片机,所述的超声波探头为防水型压电陶瓷一体式超声波传感器TCF40-18TR1,所述A/D转换电路选用ADS930模数转换芯片,所述温度采集电路选用数字式温度传感器DS18B20,所述报警模块选用ISD1420语音芯片,所述存储模块采用AT24C04芯片,所述USB接口选用CH375芯片,所述无线发射模块和无线接收模块选用NRF2401芯片,所述显示模块选用LCD1602液晶显示器。  Preferably, the microprocessor is selected STC89C52 single-chip microcomputer, the ultrasonic probe is a waterproof piezoelectric ceramic integrated ultrasonic sensor TCF40-18TR1, the A/D conversion circuit selects the ADS930 analog-to-digital conversion chip, and the temperature The acquisition circuit selects the digital temperature sensor DS18B20, the alarm module selects the ISD1420 voice chip, the storage module adopts the AT24C04 chip, the USB interface selects the CH375 chip, the wireless transmitting module and the wireless receiving module select the NRF2401 chip, and the display The module uses LCD1602 liquid crystal display. the

使用时,将超声波探头安装在液位上方,与液位正对。系统初始化后,由第一微处理器产生的脉冲信号经功率幅值放大后,激励超声波探头产生高频的超声波,超声波经媒介传到液面,部分超声能量被反射回超声波探头,发射信号和回波信号一同进入信号接收系统中进行放大、滤波处理后,经过A/D转换成数字信号送入第一微处理器,第一微处理器进行处理、计算、转换,并考虑 温度采集电路测量的温度,进行温度补偿,然后通过无线发射模块发送至信号接收处理模块的第二微处理器存储数据,并将测量数据送入液晶进行显示,同时把数据和按键模块输入的最高液位、最低液位进行计算和比较,若不在范围内,则启动语音报警,同时可利用USB接口连接上位PC机,通过编写的软件绘制液位的实时和历史波形曲线。  When in use, install the ultrasonic probe above the liquid level, facing the liquid level. After the system is initialized, the pulse signal generated by the first microprocessor is amplified by the power amplitude to excite the ultrasonic probe to generate high-frequency ultrasonic waves. The ultrasonic waves are transmitted to the liquid surface through the medium, and part of the ultrasonic energy is reflected back to the ultrasonic probe. The transmitted signal and The echo signal enters the signal receiving system together for amplification and filtering, and then it is converted into a digital signal by A/D and sent to the first microprocessor. The first microprocessor performs processing, calculation and conversion, and considers the temperature acquisition circuit measurement The temperature is compensated, and then sent to the second microprocessor of the signal receiving processing module through the wireless transmitting module to store the data, and the measured data is sent to the liquid crystal for display. At the same time, the data and the input of the key module The liquid level is calculated and compared. If it is not within the range, the voice alarm will be activated. At the same time, the USB interface can be used to connect to the upper PC, and the real-time and historical waveform curves of the liquid level can be drawn through the written software. the

对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本实用新型。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本实用新型的精神或范围内的情况下,在其他实施例中实现。因此,本实用新型将不会限制于本文所示的这些实施例,而是要符合于本文所公开的原理和新颖特点相一致的最宽的范围。  The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model . Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein. the

Claims (6)

1.无线超声波液位计,包括信号检测发送模块和信号接收处理模块,所述信号检测发送模块包括第一微处理器、超声波探头、功率幅值放大电路、脉冲产生电路、放大电路、滤波电路、A/D转换电路、温度采集电路和无线发射模块,所述温度采集电路和无线发射模块均与第一微处理器相连,第一微处理器控制脉冲产生电路产生信号后,经过功率幅值放大电路和超声波探头连接,超声波探头发出回波信号经过放大电路、滤波电路、A/D转换电路后和第一微处理器相连接,所述信号接收处理模块包括第二微处理器、无线接收模块、USB接口、按键模块、显示模块、报警模块和存储模块,所述无线接收模块、按键模块、显示模块、报警模块和存储模块均与第二微处理器相连,第二微处理器通过USB接口和PC机连接。  1. A wireless ultrasonic liquid level gauge, including a signal detection and sending module and a signal receiving and processing module, the signal detection and sending module includes a first microprocessor, an ultrasonic probe, a power amplitude amplifier circuit, a pulse generation circuit, an amplifier circuit, and a filter circuit , A/D conversion circuit, temperature acquisition circuit and wireless transmission module, the temperature acquisition circuit and wireless transmission module are all connected with the first microprocessor, after the first microprocessor controls the pulse generation circuit to generate the signal, after the power amplitude The amplifying circuit is connected with the ultrasonic probe, and the echo signal sent by the ultrasonic probe is connected with the first microprocessor after passing through the amplifying circuit, the filter circuit and the A/D conversion circuit, and the signal receiving and processing module includes a second microprocessor, a wireless receiving Module, USB interface, key module, display module, alarm module and storage module, the wireless receiving module, key module, display module, alarm module and storage module are all connected with the second microprocessor, and the second microprocessor is connected through USB Interface and PC connection. the 2.根据权利要求1所述的无线超声波液位计,其特征在于:所述超声波探头为压电陶瓷一体式超声波传感器。  2. The wireless ultrasonic liquid level gauge according to claim 1, wherein the ultrasonic probe is a piezoelectric ceramic integrated ultrasonic sensor. the 3.根据权利要求1所述的无线超声波液位计,其特征在于:所述温度采集电路为数字式温度传感器,起温度补偿作用。  3. The wireless ultrasonic liquid level gauge according to claim 1, characterized in that: the temperature acquisition circuit is a digital temperature sensor, which plays a role of temperature compensation. the 4.根据权利要求1所述的无线超声波液位计,其特征在于:所述报警模块为语音报警器。  4. The wireless ultrasonic liquid level gauge according to claim 1, characterized in that: the alarm module is a voice alarm. the 5.根据权利要求1所述的无线超声波液位计,其特征在于:所述显示模块为LCD显示屏。  5. The wireless ultrasonic liquid level gauge according to claim 1, wherein the display module is an LCD display. the 6.根据权利要求1所述的无线超声波液位计,其特征在于:所述无线发射模块与无线接收模块相匹配且之间无线通讯。  6. The wireless ultrasonic liquid level gauge according to claim 1, characterized in that: the wireless transmitting module matches with the wireless receiving module and communicates wirelessly therebetween. the
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CN103575330A (en) * 2013-10-09 2014-02-12 无锡锐泰节能系统科学有限公司 Multi-parameter ultrasonic wave fluid tester and use method thereof
CN104165654A (en) * 2014-07-25 2014-11-26 长城信息产业股份有限公司 Liquid level detection and flow monitoring apparatus and method based on supersonic wave attenuation principle
CN105806448A (en) * 2015-01-03 2016-07-27 中山欧麦克仪器设备有限公司 A sludge interface instrument with wireless output
CN106370270A (en) * 2016-11-07 2017-02-01 合肥同想信息技术有限公司 Portable intelligent ultrasonic water depth detection system
CN106441510A (en) * 2016-10-21 2017-02-22 窦朝海 Liquid level monitoring and alarming device based on ultrasonic distance measuring
CN107044870A (en) * 2017-05-12 2017-08-15 交通运输部天津水运工程科学研究所 A kind of multi-parameter portable warehousing and transportation facilities detector
CN107402055A (en) * 2017-09-07 2017-11-28 河南质量工程职业学院 A kind of external-placed type supersonic liquid level measuring system and method based on ARM
CN112325986A (en) * 2020-11-03 2021-02-05 华能国际电力股份有限公司南通电厂 Limestone slurry circulating tank liquid level measuring device
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103575330A (en) * 2013-10-09 2014-02-12 无锡锐泰节能系统科学有限公司 Multi-parameter ultrasonic wave fluid tester and use method thereof
CN104165654A (en) * 2014-07-25 2014-11-26 长城信息产业股份有限公司 Liquid level detection and flow monitoring apparatus and method based on supersonic wave attenuation principle
CN104165654B (en) * 2014-07-25 2017-04-19 长城信息产业股份有限公司 Liquid level detection and flow monitoring apparatus and method based on supersonic wave attenuation principle
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CN106441510A (en) * 2016-10-21 2017-02-22 窦朝海 Liquid level monitoring and alarming device based on ultrasonic distance measuring
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CN112325986A (en) * 2020-11-03 2021-02-05 华能国际电力股份有限公司南通电厂 Limestone slurry circulating tank liquid level measuring device
CN112325986B (en) * 2020-11-03 2024-04-16 华能国际电力股份有限公司南通电厂 Limestone slurry circulating tank liquid level measuring device
CN114295083A (en) * 2022-01-12 2022-04-08 长江水利委员会长江科学院 Underwater revetment stability monitoring system and monitoring method

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