CN203870096U - Wireless water quality ammonia nitrogen monitoring device - Google Patents
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 47
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Abstract
本实用新型公开了一种无线水质氨氮监测装置，包括至少一个传感器节点及与所述传感器节点通过ZigBee网络连接的汇聚节点；传感器节点包括水质氨氮传感器、信号调理模块、处理模块和第一ZigBee模块；水质氨氮传感器，用于采集水质氨氮参数数据；信号调理模块，用于接收水质氨氮传感器采集的氨氮参数数据，并对数据进行放大转化；处理模块，用于接收信号调理模块调理后的数据，并将数据通过串口通讯传输给第一ZigBee模块；汇聚节点包括第二ZigBee模块、控制模块、GPRS模块和监测终端；第二ZigBee模块，通过ZigBee网络接收来自第一ZigBee模块发送的数据；控制模块，用于接收第二ZigBee模块传输的数据，并将数据通过串口通讯传输给GPRS模块；GPRS模块，用于通过GPRS网络将接收到的数据传输给监测终端。本实用新型能够远程、实时监测水质氨氮参数特性的变化。
The utility model discloses a wireless water quality ammonia nitrogen monitoring device, comprising at least one sensor node and a convergence node connected to the sensor node through a ZigBee network; the sensor node includes a water quality ammonia nitrogen sensor, a signal conditioning module, a processing module and a first ZigBee module The water quality ammonia nitrogen sensor is used to collect the water quality ammonia nitrogen parameter data; the signal conditioning module is used to receive the ammonia nitrogen parameter data collected by the water quality ammonia nitrogen sensor, and to amplify and transform the data; the processing module is used to receive the data adjusted by the signal conditioning module, And the data is transmitted to the first ZigBee module through the serial port communication; the aggregation node includes the second ZigBee module, the control module, the GPRS module and the monitoring terminal; the second ZigBee module receives the data sent from the first ZigBee module through the ZigBee network; the control module , used to receive the data transmitted by the second ZigBee module, and transmit the data to the GPRS module through serial port communication; the GPRS module is used to transmit the received data to the monitoring terminal through the GPRS network. The utility model can remotely and real-time monitor the change of the parameter characteristics of the ammonia nitrogen of the water quality.
Description
技术领域 technical field
本实用新型涉及一种水质监测装置，尤其涉及一种无线水质氨氮监测装置。 The utility model relates to a water quality monitoring device, in particular to a wireless water quality ammonia nitrogen monitoring device.
背景技术 Background technique
水资源是一种重要的基础自然资源, 是生态环境的控制性因素之一, 同时又是战略性经济资源,是一个国家综合国力的有机组成部分。因此，保护水资源是环境保护工作的重中之重。保护水环境、治理水污染，水质监测是必不可少的首要工作, 是有效治理和控制水污染的技术支持和保障。加强水资源管理,保护水环境,实现水质在线自动监测己经成为关系国计民生的大事。然而，长期使用中发现，目前市场上的无线水质监测装置一般仅能进行取样检测，设备复杂且价格昂贵，不适合水质监测的推广应用。 Water resources are an important basic natural resource and one of the controlling factors of the ecological environment. At the same time, they are also strategic economic resources and an integral part of a country's comprehensive national strength. Therefore, the protection of water resources is the top priority of environmental protection. To protect the water environment and control water pollution, water quality monitoring is an essential and primary task, and it is the technical support and guarantee for effective treatment and control of water pollution. Strengthening water resources management, protecting water environment, and realizing online automatic monitoring of water quality have become a major issue related to the national economy and people's livelihood. However, it has been found in long-term use that the wireless water quality monitoring devices currently on the market can only perform sampling and testing, and the equipment is complex and expensive, which is not suitable for the promotion and application of water quality monitoring.
发明内容 Contents of the invention
本实用新型所要解决的技术问题是提供一种能够远程、实时监测水质的无线水质氨氮监测装置。 The technical problem to be solved by the utility model is to provide a wireless water quality ammonia nitrogen monitoring device capable of remote and real-time monitoring of water quality.
为解决上述技术问题，本实用新型提供一种无线水质氨氮监测装置，包括至少一个传感器节点及与所述传感器节点通过ZigBee网络连接的汇聚节点； In order to solve the above technical problems, the utility model provides a wireless water quality ammonia nitrogen monitoring device, including at least one sensor node and a convergence node connected to the sensor node through a ZigBee network;
所述传感器节点包括水质氨氮传感器、信号调理模块、处理模块和第一ZigBee模块； The sensor node includes a water quality ammonia nitrogen sensor, a signal conditioning module, a processing module and a first ZigBee module;
所述水质氨氮传感器，用于采集水质氨氮参数数据； The water quality ammonia nitrogen sensor is used to collect water quality ammonia nitrogen parameter data;
所述信号调理模块，用于接收所述水质氨氮传感器采集的氨氮参数数据，并对数据进行放大转化； The signal conditioning module is used to receive the ammonia nitrogen parameter data collected by the water quality ammonia nitrogen sensor, and to amplify and transform the data;
所述处理模块，用于接收所述信号调理模块调理后的数据，并将数据通过串口通讯传输给所述第一ZigBee模块； The processing module is used to receive the data conditioned by the signal conditioning module, and transmit the data to the first ZigBee module through serial communication;
所述汇聚节点包括第二ZigBee模块、控制模块、GPRS模块和监测终端； The aggregation node includes a second ZigBee module, a control module, a GPRS module and a monitoring terminal;
所述第二ZigBee模块，通过ZigBee网络接收来自所述第一ZigBee模块发送的数据； The second ZigBee module receives data sent from the first ZigBee module through the ZigBee network;
所述控制模块，用于接收所述第二ZigBee模块传输的数据，并将数据通过串口通讯传输给所述GPRS模块； The control module is used to receive the data transmitted by the second ZigBee module, and transmit the data to the GPRS module through serial port communication;
所述GPRS模块，用于通过GPRS网络将接收到的数据传输给监测终端。 The GPRS module is used to transmit the received data to the monitoring terminal through the GPRS network.
还包括供电模块，用于为所述水质氨氮传感器、所述处理模块、所述控制模块、所述第一ZigBee模块和所述第二ZigBee模块供电。 It also includes a power supply module for supplying power to the water quality ammonia nitrogen sensor, the processing module, the control module, the first ZigBee module and the second ZigBee module.
所述信号调理模块包括LM358双运算放大器。 The signal conditioning module includes LM358 dual operational amplifiers.
所述处理模块包括ATmega16L-8PI单片机。 The processing module includes ATmega16L-8PI microcontroller.
所述控制模块包括ATmega16L-8PI单片机。 The control module includes an ATmega16L-8PI microcontroller.
本实用新型的有益效果为：本实用新型通过将近距离传输的ZigBee模块与远距离传输的GPRS模块结合使用，克服了传统的水质监测系统实时性差、远距离信息传输能力弱、控制性差、代价昂贵等缺点，既能灵活方便的对水质氨氮参数进行实时监控，又能及时将数据远距离传输至监测终端，该无线水质氨氮监测装置数据传输安全可靠，且设备体积要求小，无需布线，大大降低了工程造价及运行维修成本。 The beneficial effects of the utility model are: the utility model overcomes the traditional water quality monitoring system with poor real-time performance, weak long-distance information transmission capability, poor controllability and high cost by combining the ZigBee module for short-distance transmission and the GPRS module for long-distance transmission. and other shortcomings, it can not only monitor the water quality ammonia nitrogen parameters in real time flexibly and conveniently, but also transmit the data to the monitoring terminal in a timely manner. Project cost and operation and maintenance cost.
附图说明 Description of drawings
图1为本实用新型的系统框图； Fig. 1 is a system block diagram of the utility model;
图2为图1所示信号调理模块的电路原理图； Fig. 2 is a schematic circuit diagram of the signal conditioning module shown in Fig. 1;
图3为图1所示处理模块和控制模块的电路原理图； Fig. 3 is the circuit principle diagram of processing module and control module shown in Fig. 1;
图4为图3所示控制模块的扩展接口原理图； Fig. 4 is the schematic diagram of the extended interface of the control module shown in Fig. 3;
图5为图1所示信号调理模块和GPRS模块的电源电路原理图； Fig. 5 is the schematic diagram of the power supply circuit of signal conditioning module and GPRS module shown in Fig. 1;
图6为水质氨氮传感器、处理模块、控制模块、第一ZigBee模块和第二ZigBee模块的电源电路原理图。 Fig. 6 is a schematic diagram of the power supply circuit of the water quality ammonia nitrogen sensor, the processing module, the control module, the first ZigBee module and the second ZigBee module.
具体实施方式 Detailed ways
以下结合附图和具体实施方式对本实用新型做进一步详细说明：参见图1所示，本实用新型的一种无线水质氨氮监测装置，包括至少一个传感器节点2及与传感器节点2通过ZigBee网络连接的汇聚节点4； Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail: referring to shown in Fig. 1, a kind of wireless water quality ammonia nitrogen monitoring device of the present utility model comprises at least one sensor node 2 and connects with sensor node 2 by ZigBee network sink node 4;
传感器节点2包括水质氨氮传感器20、信号调理模块22、处理模块24和第一ZigBee模块26； Sensor node 2 comprises water quality ammonia nitrogen sensor 20, signal conditioning module 22, processing module 24 and the first ZigBee module 26;
水质氨氮传感器20，用于采集水质氨氮参数数据； Water quality ammonia nitrogen sensor 20, used for collecting water quality ammonia nitrogen parameter data;
所述信号调理模块22，用于接收水质氨氮传感器20采集的氨氮参数数据，并对数据进行放大转化； The signal conditioning module 22 is used to receive the ammonia nitrogen parameter data collected by the water quality ammonia nitrogen sensor 20, and to amplify and transform the data;
处理模块24，用于接收信号调理模块22调理后的数据，并将数据通过串口通讯传输给第一ZigBee模块26； The processing module 24 is used to receive the data conditioned by the signal conditioning module 22, and transmit the data to the first ZigBee module 26 through serial port communication;
汇聚节点4包括第二ZigBee模块40、控制模块42、GPRS模块44和监测终端46； The aggregation node 4 includes a second ZigBee module 40, a control module 42, a GPRS module 44 and a monitoring terminal 46;
第二ZigBee模块40，通过ZigBee网络接收来自第一ZigBee模块26发送的数据； The second ZigBee module 40 receives the data sent from the first ZigBee module 26 through the ZigBee network;
控制模块42，用于接收第二ZigBee模块40传输的数据，并将数据通过串口通讯传输给GPRS模块44； The control module 42 is used to receive the data transmitted by the second ZigBee module 40, and transmit the data to the GPRS module 44 through serial port communication;
GPRS模块44，用于通过GPRS网络将接收到的数据传输给监测终端46。 The GPRS module 44 is used to transmit the received data to the monitoring terminal 46 through the GPRS network.
本实用新型的原理是：通过采用水质氨氮传感器20监测水质氨氮参数，传感器节点2通过ZigBee网络把水质氨氮参数发送到汇聚节点4上, 由汇聚节点4通过GPRS网络传输到监测终端46，本实用新型通过将近距离传输的ZigBee模块与远距离传输的GPRS模块结合使用，实现实时监测水质氨氮参数特性的变化。 The principle of the utility model is: by using the water quality ammonia nitrogen sensor 20 to monitor the water quality ammonia nitrogen parameters, the sensor node 2 sends the water quality ammonia nitrogen parameters to the convergence node 4 through the ZigBee network, and the convergence node 4 transmits the water quality ammonia nitrogen parameters to the monitoring terminal 46 through the GPRS network. The new type combines the ZigBee module for short-distance transmission with the GPRS module for long-distance transmission to realize real-time monitoring of changes in the characteristics of ammonia nitrogen parameters in water quality.
传感器节点2中的水质氨氮传感器20组成数据采集模块，该水质氨氮传感器20是NH61-A891水质氨氮传感器，能实时监测水质氨氮的变化，具有耐腐蚀，性能稳定和测量精度高等优点。 The water quality ammonia nitrogen sensor 20 in the sensor node 2 forms a data acquisition module. The water quality ammonia nitrogen sensor 20 is an NH61-A891 water quality ammonia nitrogen sensor, which can monitor changes in water quality ammonia nitrogen in real time, and has the advantages of corrosion resistance, stable performance and high measurement accuracy.
传感器节点2中的处理模块24和汇聚节点4中的控制模块42均包括ATmega16L-8PI单片机，该单片机一种基于增强的AVRRISC结构的低功耗8 位CMOS微控制器。由于其先进的指令集以及单时钟周期指令执行时间，ATmega16 的数据吞吐率高达1MIPS/ MHz，从而可以缓减系统在功耗和处理速度之间的矛盾，为许多嵌入式控制应用提供了灵活而低成本的解决方案。参见图3所示，传感器节点2中的处理模块24和汇聚节点4中的控制模块42具体的是由ATmega16L-8PI单片机及其外围电路构成，其中ATmega16L-8PI单片机可以实现8路的AD采集，将调理好的信号直接接至ATmega16L-8PI单片机的40号引脚；ATmega16L-8PI单片机的9号引脚上接有一个10k的电阻R1和10uF的电容C6，电阻R1和电容C6串联后，电容C6的另一端接5V电源，电阻R1的另一端接地，该外围电路起到上电复位的作用，同时在电容C6上并联一个开关S1，实现手动复位功能；ATmega16L-8PI单片机的12号引脚和13号引脚之间串联有一个22.1184M的晶振Y1，该晶振Y1的两端分别连接有一个33pF的电容C7、C12，该电容C7、C12的另一端接地，晶振Y1和电容C7、C12构成的震荡电路，对整个电路长期、可靠、稳定的工作具有非常重要的意义，尤其是在频繁的进行睡眠、唤醒机制中起到了非常重要的作用；ATmega16L-8PI单片机的10号引脚上接5V电源，下接0.1uF的电容；ATmega16L-8PI单片机的30号引脚是端口A 与A/D 转换器的电源。不使用ADC时，该引脚应直接与VCC连接，使用ADC时应通过一个低通滤波器与VCC连接。,控制模块42使用A/D，利用10mH的电感和两个0.1uF的电容来实现低通滤波的功能；ATmega16L-8PI单片机的31号引脚和11号引脚接地；Tmega16L-8PI单片机的32号引脚是 A/D 的模拟基准输入引脚，不能直接接地，需通过10uF的电容C8接地。再参见4所示，汇聚节点4中的控制模块42的扩展接口是以MAX232所构成的一个RS232串口通讯，用于连接GPRS DTU 无线数据传输模块，该扩展接口的15号引脚接地，1号引脚与3号引脚、4号引脚与5号引脚分别串联一个0.1uF的电容C2、C4，2号引脚串联一个0.1uF的电容C3后接电源正极，6号引脚串联一个0.1uF的电容C5后接地， 7号引脚和8号引脚分别接一个RS232的2号引脚和3号引脚，并且RS232的5号引脚、10号引脚和11号引脚都接地；此外，该扩展接口的9号引脚与10号引脚分别接至ATmega16L-8PI单片机的14号引脚与15号引脚。 Both the processing module 24 in the sensor node 2 and the control module 42 in the sink node 4 include an ATmega16L-8PI microcontroller, which is a low-power 8-bit CMOS microcontroller based on an enhanced AVRRISC structure. Due to its advanced instruction set and single clock cycle instruction execution time, the data throughput rate of ATmega16 is as high as 1MIPS/MHz, which can alleviate the contradiction between power consumption and processing speed of the system, and provide flexible and low cost solution. Referring to Fig. 3, the processing module 24 in the sensor node 2 and the control module 42 in the aggregation node 4 are specifically composed of an ATmega16L-8PI single-chip microcomputer and its peripheral circuits, wherein the ATmega16L-8PI single-chip microcomputer can realize 8-way AD acquisition, Connect the conditioned signal directly to pin 40 of the ATmega16L-8PI microcontroller; pin 9 of the ATmega16L-8PI microcontroller is connected to a 10k resistor R 1 and a 10uF capacitor C 6 , resistor R 1 and capacitor C 6 After series connection, the other end of capacitor C 6 is connected to 5V power supply, and the other end of resistor R 1 is grounded. This peripheral circuit plays the role of power-on reset. At the same time, a switch S 1 is connected in parallel with capacitor C 6 to realize manual reset function; ATmega16L -A 22.1184M crystal oscillator Y 1 is connected in series between pin 12 and pin 13 of the 8PI MCU, and a 33pF capacitor C 7 and C 12 are respectively connected to both ends of the crystal oscillator Y 1 . The capacitors C 7 , The other end of C 12 is grounded, and the oscillating circuit composed of crystal oscillator Y 1 and capacitors C 7 and C 12 is of great significance to the long-term, reliable and stable operation of the entire circuit, especially in frequent sleep and wake-up mechanisms. It plays a very important role; pin 10 of the ATmega16L-8PI microcontroller is connected to a 5V power supply, and a capacitor of 0.1uF is connected to the bottom; pin 30 of the ATmega16L-8PI microcontroller is the power supply for port A and the A/D converter. When the ADC is not used, this pin should be directly connected to VCC, and when the ADC is used, it should be connected to VCC through a low-pass filter. , the control module 42 uses A/D, and uses 10mH inductance and two 0.1uF capacitors to realize the function of low-pass filtering; ATmega16L-8PI MCU pin 31 and pin 11 are grounded; Tmega16L-8PI MCU 32 The No. pin is the analog reference input pin of A/D, it cannot be grounded directly, but needs to be grounded through a 10uF capacitor C 8 . Referring to 4 again, the expansion interface of the control module 42 in the aggregation node 4 is a RS232 serial port communication composed of MAX232, which is used to connect the GPRS DTU wireless data transmission module. The 15th pin of the expansion interface is grounded, and the 1st pin A 0.1uF capacitor C 2 , C 4 is connected in series between pin 3, pin 4 and pin 5 respectively, and a capacitor C 3 of 0.1uF is connected in series with pin 2 and then connected to the positive pole of the power supply. A 0.1uF capacitor C 5 is connected in series with the pin and grounded. Pin 7 and pin 8 are respectively connected to pin 2 and pin 3 of RS232, and pin 5, pin 10 and pin 11 of RS232 All pins are grounded; in addition, pins 9 and 10 of the expansion interface are respectively connected to pins 14 and 15 of the ATmega16L-8PI microcontroller.
传感器节点2的第一ZigBee模块26和汇聚节点的第二ZigBee模块40均采用无线射频芯片CC2530，该芯片数据处理准确度高、效率高，保证了无线数据传输的精确度和实时性。 Both the first ZigBee module 26 of the sensor node 2 and the second ZigBee module 40 of the sink node use the wireless radio frequency chip CC2530, which has high data processing accuracy and high efficiency, and ensures the accuracy and real-time performance of wireless data transmission.
GPRS模块44采用长沙易道电子测量仪器有限公司生产的EDAO-3360 GPRS DTU 无线数据传输模块，该DTU内置8位嵌入式处理器，内嵌完备的TCP/IP协议栈，同时提供1个RS232串口（端子接口），其内部采用华为最新款MG323无线模块工业级主控芯片，可以长期稳定可靠的工作，抗干扰能力强，使用方便。 The GPRS module 44 adopts the EDAO-3360 GPRS DTU wireless data transmission module produced by Changsha Yidao Electronic Measuring Instrument Co., Ltd. The DTU has a built-in 8-bit embedded processor, a complete TCP/IP protocol stack embedded, and a RS232 serial port at the same time (terminal interface), which uses Huawei's latest MG323 wireless module industrial-grade main control chip, which can work stably and reliably for a long time, has strong anti-interference ability, and is easy to use.
参见图2所示，传感器节点2中的信号调理模块22，是基于LM358的信号调理模块。NH61-A891水质氨氮传感器，输出的4-20mA的电流信号，经信号调理模块转化成0~5V的电压信号才能传给单片机。电阻R7起I/V转换取样电阻的作用，电流信号在 R7上产生一个对应电压，即4mA对应0.04V，20mA对应0.2V，然后通过LM358进行25倍放大后，就变成对应的1-5V的电压信号。电阻R8起校对作用，调节R8使输入电流信号为20mA时输出为5V。 Referring to FIG. 2 , the signal conditioning module 22 in the sensor node 2 is a signal conditioning module based on LM358. NH61-A891 water quality ammonia nitrogen sensor, the output current signal of 4-20mA is converted into a voltage signal of 0~5V by the signal conditioning module before being transmitted to the microcontroller. Resistor R 7 acts as an I/V conversion sampling resistor. The current signal generates a corresponding voltage on R 7 , that is, 4mA corresponds to 0.04V, 20mA corresponds to 0.2V, and then after 25 times amplification by LM358, it becomes the corresponding 1 -5V voltage signal. Resistor R8 acts as a proofreader, adjust R8 so that the output is 5V when the input current signal is 20mA.
参见图5、图6所示，本实用新型中的水质氨氮传感器20、处理模块24、控制模块42、第一ZigBee模块26和第二ZigBee模块42均需提供5v电压，信号调理模块22需提供正负12V电压，GPRS模块44也需提供12V电压，故采用变压器T1变压，将220V的供电电压降至至正负16V，采用LM7812芯片将+16V降压至-12V并稳压，采用LM7912芯片将+16V降压至-12V并稳压，采用LM7805芯片将12V降压至5V并稳压。 Referring to Fig. 5 and shown in Fig. 6, the water quality ammonia nitrogen sensor 20, the processing module 24, the control module 42, the first ZigBee module 26 and the second ZigBee module 42 in the utility model all need to provide 5v voltage, and the signal conditioning module 22 needs to provide Positive and negative 12V voltage, GPRS module 44 also needs to provide 12V voltage, so the transformer T1 is used to transform the voltage, and the 220V power supply voltage is reduced to positive and negative 16V, and the LM7812 chip is used to step down +16V to -12V and stabilize the voltage. The LM7912 chip will step down +16V to -12V and stabilize the voltage, and the LM7805 chip will step down the voltage from 12V to 5V and stabilize the voltage.
以上所述仅为本实用新型的较佳实施方式，本实用新型的保护范围并不以上述实施方式为限，但凡本领域普通技术人员根据本实用新型所揭示内容所作的等效修饰或变化，皆应纳入权利要求书中记载的保护范围内。 The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, as long as those of ordinary skill in the art make equivalent modifications or changes based on the contents disclosed in the present utility model, All should be included in the scope of protection described in the claims.
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| CN105158409A (en) * | 2015-06-23 | 2015-12-16 | 中山欧麦克仪器设备有限公司 | An online ammonia nitrogen monitor with remote wireless transmission |
| CN109191819A (en) * | 2018-09-28 | 2019-01-11 | 东南大学 | A kind of multiple spot Monitoring And Analysis of The Quality system and method for monitoring and analyzing based on clustering algorithm |
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| CN105158409A (en) * | 2015-06-23 | 2015-12-16 | 中山欧麦克仪器设备有限公司 | An online ammonia nitrogen monitor with remote wireless transmission |
| CN109191819A (en) * | 2018-09-28 | 2019-01-11 | 东南大学 | A kind of multiple spot Monitoring And Analysis of The Quality system and method for monitoring and analyzing based on clustering algorithm |
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