阅读说明：本技术 一种水质监测实时预警系统 (Water quality monitoring real-time early warning system ) 是由 王冰 薛帆 王晗 邓晓斐 宋瑶 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种水质监测实时预警系统,包括频率采集电路、调频反馈电路和滤波发射电路,频率采集电路运用型号为SJ-ADC的频率采集器J1检测地面中心接收的水资源环境测量数据信号频率,所述调频反馈电路分两路接收频率采集电路输出信号,一路运用三极管Q1、三极管Q2组成推挽电路防止信号交越失真,二路运用电阻R2-电阻R4和电容C2-电容C4组成选频电路筛选出单一频率信号,最后三极管Q3、三极管Q4和电阻R8-电阻R10组成的调频电路接收两路信号并调频,滤波发射电路运用电感L2和电容C7、电容C8组成滤波电路滤除信号杂波,能够实时检测地面中心接收的水资源环境测量数据信号频率,转换为水环境监测平台预警修正触发信号。(The invention discloses a water quality monitoring real-time early warning system, which comprises a frequency acquisition circuit, a frequency modulation feedback circuit and a filtering transmitting circuit, wherein the frequency acquisition circuit uses a frequency collector J1 with the model of SJ-ADC to detect the frequency of a water resource environment measurement data signal received by a ground center, the frequency modulation feedback circuit receives the output signal of the frequency acquisition circuit in two paths, one path uses a triode Q1 and a triode Q2 to form a push-pull circuit to prevent signal crossover distortion, the other path uses a resistor R2-resistor R4 and a capacitor C2-capacitor C4 to form a frequency selection circuit to screen out a single frequency signal, finally, the frequency modulation circuit consisting of a triode Q3, a triode Q4 and a resistor R8-resistor R10 receives the two paths of signals and modulates the frequency, the filtering transmitting circuit uses an inductor L2, a capacitor C7 and a capacitor C8 to form a filtering circuit to filter the clutter signals, the frequency of the water resource environment measurement data, and converting the signal into a water environment monitoring platform early warning correction trigger signal.)

1. A water quality monitoring real-time early warning system comprises a water quality detector, a signal transmission module, a water environment monitoring platform and a signal early warning module, wherein the water quality detector samples water quality parameters, the signal transmission module transmits water quality sampling signals to the water environment monitoring platform, the signal early warning module comprises a frequency acquisition circuit, a frequency modulation feedback circuit and a filtering transmitting circuit, and the water quality monitoring real-time early warning system is characterized in that the frequency acquisition circuit detects the frequency of water resource environment measurement data signals received by the water environment monitoring platform by using a frequency acquisition device J1 with the model of SJ-ADC, the frequency modulation feedback circuit receives the output signals of the frequency acquisition circuit in two ways, one way uses a triode Q1 and a triode Q2 to form a push-pull circuit to prevent signal cross distortion, and the other way uses a resistor R2-resistor R4 and a capacitor C2-capacitor C4 to form a frequency, and finally, a frequency modulation circuit consisting of a triode Q3, a triode Q4 and a resistor R8-a resistor R10 receives two paths of signals and modulates the frequency, an absolute value circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a diode D3 and a diode D4 is used for converting alternating current into direct current to be input into the filtering and transmitting circuit, wherein the triode Q5 and the triode Q6 detect the amplitude of the output signal of the absolute value circuit, the triode Q6 feeds back an abnormal high-level signal to the base of the triode Q4, the triode Q5 feeds back an abnormal low-level signal to the base of the triode Q2, the amplitude of the output signal of the absolute value circuit is adjusted, and the filtering and transmitting circuit consists of an inductor L2, a capacitor C7 and a capacitor C8 and is used for filtering signal noise and then is sent to.

2. A water quality monitoring real-time pre-warning system as claimed in claim 1, wherein the frequency modulation feedback circuit comprises a diode D2, the anode of the diode D2 is connected to one end of a resistor R2 and a capacitor C2, the other end of the resistor R2 is connected to one end of a resistor R4 and a capacitor C4, the other end of the capacitor C4 is connected to ground, the other end of the capacitor C2 is connected to one end of a resistor R3 and a capacitor C3, the other end of the resistor R3 is connected to ground, the other end of the capacitor C3 is connected to the base of the transistor Q3 and the base of the transistor Q3, the collector of the transistor Q3 is connected to one end of the resistor R3 and the resistor R3, the emitter of the transistor Q3 is connected to one end of the resistor C3 and the other end of the resistor R3, the other end of the resistor R3 and the other end of the resistor R3 are connected to ground, the cathode of the diode D3, the base of the transistor Q3, the collector of the transistor Q3 is connected to, the emitter of the transistor Q1 is connected to the emitter of the transistor Q2, the base of the transistor Q3, one end of the resistor R8, and the other end of the resistor R9, the collector of the transistor Q3 and the other end of the resistor R8 are connected to the power supply +5V, the emitter of the transistor Q3 is connected to one end of the resistor R11, the other end of the resistor R11 is connected to the collector of the transistor Q11, the resistor R11, one end of the resistor R11 and the inverting input end of the operational amplifier AR 11, the non-inverting input end of the operational amplifier AR 11 is connected to ground, the output end of the operational amplifier AR 11 is connected to the cathode of the diode D11 and the anode of the diode D11, the anode of the diode D11 is connected to the other end of the resistor R11 and one end of the resistor R11, the cathode of the diode D11 is connected to the base of the transistor Q11 and the inverting input end of the operational amplifier AR 11, the inverting input end of the operational amplifier AR, The emitting electrode of the triode Q5 and the other end of the resistor R13, the emitting electrode of the triode Q6 is connected with the negative electrode of the voltage regulator tube D5, the other end of the resistor R15 and the base electrode of the triode Q5, and the positive electrode of the voltage regulator tube D5 is grounded.

3. The water quality monitoring real-time early warning system as claimed in claim 2, wherein the filtering transmitting circuit comprises an inductor L2, one end of the inductor L2 is connected with one end of a resistor R16, one end of a resistor R17 and one end of a capacitor C7, the other end of the resistor R16 is connected with the output end of an amplifier AR2, the other end of the inductor L2 is connected with one end of a resistor R18 and one end of a capacitor C8, the other ends of the resistor R17, the capacitor C7 and the capacitor C8 are connected with the ground, and the other end of the resistor R18 is connected with a signal transmitter E1.

4. The water quality monitoring real-time early warning system as claimed in claim 1, wherein the frequency acquisition circuit comprises a frequency collector J1 with the model of SJ-ADC, a power supply end of a frequency collector J1 is connected with +5V, a grounding end of a frequency collector J1 is grounded, an output end of the frequency collector J1 is connected with one end of a resistor R1 and a cathode of a voltage regulator tube D1, an anode of the voltage regulator tube D1 is grounded, the other end of the resistor R1 is connected with one end of a capacitor C1 and an anode of a diode D2, and the other end of the capacitor C1 is grounded.

Technical Field

The invention relates to the technical field of data aggregation, in particular to a water quality monitoring real-time early warning system.

Background

Disclosure of Invention

In view of the above situation, in order to overcome the defects of the prior art, the present invention aims to provide a water quality monitoring real-time early warning system, which has the characteristics of ingenious design and humanized design, and can detect the frequency of the water resource environment measurement data signal received by the water environment monitoring platform in real time and convert the frequency into the early warning correction trigger signal of the water environment monitoring platform.

The technical scheme includes that the water quality monitoring real-time early warning system comprises an Internet of things constellation, a ground center, a ground terminal, a water environment monitoring platform and a signal early warning module, wherein the ground terminal collects water resource environment measurement data and sends the water resource environment measurement data to an Internet of things satellite, the Internet of things satellite sends the water resource environment measurement data to the ground center, the ground center receives the water resource environment measurement data and sends the water resource environment measurement data to the water environment monitoring platform through a ground network, the water environment monitoring platform judges whether pollution exists in a monitored area or not based on the water resource environment measurement data, the signal early warning module comprises a frequency acquisition circuit, a frequency modulation feedback circuit and a filtering and transmitting circuit, the frequency acquisition circuit detects the signal frequency of the water resource environment measurement data received by the water environment monitoring platform by using a frequency collector J1 with the model number of SJ-ADC, the frequency modulation feedback circuit receives signals output by the frequency acquisition circuit in two paths, a push-pull circuit consisting of a triode Q1 and a triode Q2 is used for preventing signal cross distortion, a frequency selection circuit consisting of a resistor R2-a resistor R4 and a capacitor C2-a capacitor C4 is used for screening single frequency signals, finally a frequency modulation circuit consisting of a triode Q3, a triode Q4 and a resistor R8-a resistor R10 is used for receiving two paths of signals and modulating frequency, an absolute value circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a diode D3 and a diode D4 is used for converting alternating current into direct current to be input into a filtering emission circuit, wherein the triode Q5 and the triode Q6 are used for detecting the amplitude of the signal output by the absolute value circuit, the triode Q6 feeds back an abnormal high level signal to the base of the triode Q4, the triode Q5 feeds back an abnormal low level signal to the base of the triode Q36, the filtering transmitting circuit utilizes an inductor L2, a capacitor C7 and a capacitor C8 to form a filtering circuit for filtering signal clutter, and the filtering circuit is sent to the water environment monitoring platform through a signal transmitter E1.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;

1. a push-pull circuit consisting of a triode Q1 and a triode Q2 is used for preventing signal crossover distortion, a frequency selection circuit consisting of a resistor R2-a resistor R4 and a capacitor C2-a capacitor C4 is used for two paths of signals to screen out single-frequency signals, the unicity of frequency is ensured, abnormal frequency is filtered out, finally a frequency modulation circuit consisting of a triode Q3, a triode Q4 and a resistor R8-a resistor R10 receives the two paths of signals and modulates the frequency, can further ensure the stability of the signal frequency, namely accurately and stably extract the frequency of the water resource environment measurement data signal received by the water environment monitoring platform to judge whether the signal is abnormal or not, when the signal frequency is high, the output signal of the frequency modulation circuit is high level signal, otherwise, the output signal is low level signal, the signal is divided into two paths to be respectively regulated, then, a frequency modulation circuit is used for frequency modulation, so that the stability and the accuracy of signals can be ensured, and the reliability of the scheme is improved;

2. the triode Q5 and the triode Q6 detect the amplitude of the signal output by the absolute value circuit, the triode Q6 feeds back an abnormal high-level signal to the base electrode of the triode Q4, the triode Q5 feeds back an abnormal low-level signal to the base electrode of the triode Q2, the amplitude of the signal output by the absolute value circuit is further adjusted, the function of protecting the circuit is achieved, the working strength of an abnormal signal trigger signal emitter E1 can be ensured, a filter circuit consisting of an inductor L2, a capacitor C7 and a capacitor C8 is used for filtering signal clutter, when the signal frequency is abnormal, the output signal of the frequency modulation feedback circuit is a high-level signal, the trigger signal emitter E1 works and sends an early warning signal to a water environment monitoring platform, the water environment monitoring platform corrects and adjusts the abnormal water resource environment measurement data signal in time, otherwise, the output signal of the frequency modulation feedback circuit is a low-level signal, the signal emitter E1 cannot be triggered to work, and the frequency, and converting the water environment monitoring platform into a water environment monitoring platform early warning correction trigger signal function.

Drawings

FIG. 1 is a frequency modulation feedback circuit diagram of a water quality monitoring real-time early warning system of the present invention.

Fig. 2 is a frequency acquisition circuit diagram of a water quality monitoring real-time early warning system of the invention.

FIG. 3 is a circuit diagram of a filter transmitter of a real-time water quality monitoring and early warning system according to the present invention.

Detailed Description

The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1 to 3. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.