CN210269806U

CN210269806U - Multi-parameter sewage quality detection system

Info

Publication number: CN210269806U
Application number: CN201920707691.7U
Authority: CN
Inventors: 覃东安
Original assignee: Guangdong Zengyuan Test And Services Co ltd
Current assignee: Guangdong Zengyuan Test And Services Co ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2020-04-07
Anticipated expiration: 2029-05-16

Abstract

The utility model discloses a multi-parameter sewage quality detection system, which comprises a detection device body and a control module, wherein the front side of the detection device body is provided with a display and a control button, and a turbidity detector, a conductivity detector, an ammonia nitrogen tester, a total phosphorus tester, a residual chlorine tester and a BOD tester are fixedly arranged inside the detection device body; the control module is electrically connected with a power supply, a display, a buzzer, a control key and a signal processing module, and the signal processing module is electrically connected with a signal acquisition module; the utility model discloses a structure with multiple parameter detection to ATM89C51 singlechip carries out the selectivity of little control CD4052 analog switch to signal processing module, and is equipped with the two-stage signal and enlargies, and be equipped with various steady voltage, filtering, impedance, common mode suppression and chopper circuit, makes the stability of the transmission ten minutes of signal, can send out the police dispatch newspaper when data surpass standard data.

Description

Multi-parameter sewage quality detection system

Technical Field

The utility model relates to a detecting system technical field specifically is a multi-parameter sewage quality of water detecting system.

Background

The water quality monitoring system (On-line WaterQualityMonitoringSystemA) is a comprehensive On-line automatic monitoring system which takes an automatic analysis instrument as a core and uses modern sensing technology, automatic measurement technology, automatic control technology, computer application technology, and related special analysis software and communication network. WQMS can discover the abnormal change of water quality as early as possible, make early warning forecast rapidly for preventing downstream water quality pollution, track pollution sources in time, thereby serve for management decision, but the universal problem in the prior art is that the function of detection device is single, the quality of water parameter that can detect is less, often need several kinds of instruments to detect together, just can detect the parameter of water quality completely, and the in-process of data acquisition and transmission of current water quality detection system often has the in-process that has data transmission because of circuit design, make the signal can not be accurate complete when receiving and gathering, can cause the scheduling problem of losing of data like this, and can not accurate control show every kind of data acquisition, so an urgent need for a can the accurate detection system of being convenient for control of multi-parameter acquisition and data.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multi-parameter sewage quality of water detecting system has multiple parameter acquisition, and the circuit is stabilized data acquisition and is accurate, advantages such as stability control for solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a multi-parameter sewage quality detection system comprises a detection device body and a control module, wherein four groups of supporting legs are fixedly welded at the bottom end of the detection device body, a glass cover is movably connected at the upper end of the detection device body, a display and a control button are arranged on the front surface of the detection device body, a handle is fixedly connected on the glass cover, and a turbidity detector, a conductivity detector, an ammonia nitrogen tester, a total phosphorus tester, a residual chlorine tester and a BOD tester are fixedly arranged in the detection device body;

the control module electric connection has power, display, bee calling organ, control button and signal processing module, signal processing module electric connection has signal acquisition module, electric connection has the mutual-inductor to keep apart the input among the signal acquisition module circuit, and electric connection has signal amplification triode U2C among the signal acquisition module circuit, electric connection has CD4052 analog switch among the signal processing module circuit, and electric connection has RC low pass filter circuit to and electric connection has TIL7650 to enlarge the triode.

Preferably, the turbidity detector comprises a hernia lamp, a reflective mirror and an astigmatism detector, and the hernia lamp and the reflective mirror are symmetrically arranged and are positioned on two sides of the detection liquid.

Preferably, the ammonia nitrogen tester and the total phosphorus tester adopt photometers for detection, and the light source receiver are respectively positioned at two sides of the detection liquid.

Preferably, the residual chlorine tester adopts a BCL-200A tester, and the BCL-200A tester can simultaneously detect residual chlorine, pH value and temperature.

Preferably, the control module adopts ATM89C51 to control a single chip microcomputer.

Preferably, the 1 st stage of the preamplifier in the signal processing module circuit adopts a differential connection method, and the amplification factor of the 2 nd stage inverting amplifier is adjusted by a RW2 multi-turn potentiometer.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a structure with multiple parameter detection, can detect simultaneously sewage through same instrument is quick, and it is little controlled signal processing module through ATM89C51 singlechip, receive the request that the control button sent and come at ATM89C51 singlechip promptly, control the various signals that detect detecting instrument transmission and return of the selectivity of CD4052 analog switch, and be equipped with two-stage signal amplification on signal processing module, and the two-stage is enlargied and is adopted different modes, and be equipped with various steady voltage, filtering, impedance, common mode suppression and chopper circuit, make the stability of the conveying ten minutes of signal, and show through the display, make things convenient for the staff to watch, and the ATM89C51 singlechip can carry out data comparison in received signal, can send out the police dispatch newspaper when data exceed standard data.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a circuit block diagram of the present invention;

fig. 4 is a circuit diagram of the signal acquisition module of the present invention;

fig. 5 is a circuit diagram of the signal processing module of the present invention.

In the figure: 1. a detection device body; 2. a support leg; 3. a glass cover; 4. a display; 5. a control key; 6. a handle; 7. a turbidity detector; 8. a conductivity detector; 9. an ammonia nitrogen tester; 10. A total phosphorus determinator; 11. a residual chlorine tester; 12. BOD measuring instrument.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The same reference numbers in different drawings identify the same or similar elements; it should be further understood that terms such as "first," "second," "third," "upper," "lower," "front," "rear," "inner," "outer," "end," "portion," "section," "width," "thickness," "zone," and the like, may be used solely for convenience in reference to the figures and to aid in describing the invention, and are not intended to limit the invention.

Referring to fig. 1-5, the present invention provides a technical solution: a multi-parameter sewage quality detection system comprises a detection device body 1 and a control module, wherein four groups of supporting legs 2 are fixedly welded at the bottom end of the detection device body 1, and the supporting legs 2 at the position can keep the stability of the detection device body 1; the upper end of the detection device body 1 is movably connected with a glass cover 3, the front side of the detection device body 1 is provided with a display 4 and a control key 5, the display 4 at the position can display detected data, and the control key 5 can control the displayed parameter category; the glass cover 3 is fixedly connected with a handle 6, a turbidity detector 7, a conductivity detector 8, an ammonia nitrogen tester 9, a total phosphorus tester 10, a residual chlorine tester 11 and a BOD tester 12 are fixedly arranged in the detection device body 1, and various detection instruments at the position can detect different types of sewage;

the control module is electrically connected with a power supply, a display 4, a buzzer, a control button 5 and a signal processing module, the signal processing module is electrically connected with a signal acquisition module, a circuit of the signal acquisition module is electrically connected with a mutual inductor isolation input, and the liver protection isolation input at the position can raise an alternating current signal; the signal acquisition module circuit is electrically connected with a signal amplification triode U2C, and a signal amplification triode U2C at the position can amplify signals; the signal processing module circuit is electrically connected with a CD4052 analog switch, the CD4052 at the position is a double-4-to-1 multi-path analog switch, and the switching of the signals is controlled by a program through an interface wire of the singlechip; and the RC low-pass filter circuit is electrically connected with the temperature sensor, and the RC low-pass filter circuit is used for detecting the temperature signal which is a slowly-changing signal. The anti-interference capability of the instrument can be effectively improved through the RC low-pass filter circuit; and the electric connection is with TIL7650 amplification triode, the amplifier here chooses the little drift, low maladjustment, high gain high common mode rejection ratio chopped mode auto-zero operational amplifier TIL 7650.

Specifically, turbidity detector 7 includes hernia lamp, reflector and astigmatism detector, and hernia lamp and reflector symmetry set up to be in and detect the liquid both sides, the setting of this department can make the light of hernia lamp can direct irradiation detect liquid on, and the reflector can improve the accuracy that detects.

Specifically, the ammonia nitrogen tester 9 and the total phosphorus tester 10 adopt photometers for detection, a light source and a light source receiver are respectively positioned at two sides of detection liquid, the ammonia nitrogen tester 9 at the position adopts a salicylic acid photometry specified by national standard GB7148-81 and international ISO7150/1-1948 as a basic test means, and is assisted with sample colorimetric reaction pretreatment, so that the rapid and accurate colorimetric determination of a sample is realized, and the device has the advantages of stability, sensitivity, reliability, no mercury content and the like. Measurement range: directly measuring the ammonia nitrogen concentration of 0.01-1.0 mg/L; the water quality dilution of more than 1.0mg/L is measured, and the total phosphorus determinator 10 system at the position consists of two modules, including a high-temperature chemical digestion module and a photometer analysis module, and can realize rapid and complete testing. The module has the functions of automatic cleaning and automatic calibration as other modules, and has the characteristics of maintenance saving and continuous and reliable operation. As long as the TresCon has two empty slots, a total phosphorus analysis module can be installed.

Specifically, the residual chlorine determinator 11 adopts a BCL-200A type determinator, the BCL-200A type determinator can simultaneously detect residual chlorine, pH value and temperature, and the residual chlorine total chlorine determinator of the residual chlorine total chlorine determinator is a highly intelligent online monitor and consists of a sensor and a secondary meter.

Specifically, the control module adopts an ATM89C51 control single chip microcomputer, and the ATM89C51 control single chip microcomputer is provided with an 8-bit CPU; an on-chip oscillator and a clock circuit; 32I/O lines; external memory addressing range ROM, RAM 64K; 2 16-bit timer/counter; 5 interrupt sources, two interrupt priorities; a full-duplex serial port; a Boolean processor; the system requirements can be effectively controlled.

Specifically, the 1 st stage of the preamplifier in the signal processing module circuit adopts a differential connection method, and the amplification factor of the 2 nd stage inverting amplifier is adjusted by the RW2 multi-turn potentiometer, and the setting of the position can effectively amplify signals, ensure the stability of circuit signals and reduce various fluctuations.

The working principle is as follows: the glass cover 3 is opened through the handle 6, then the sewage is respectively put into each detection instrument, namely a turbidity detector 7, an electric conductivity detector 8, an ammonia nitrogen tester 9, a total phosphorus tester 10, a residual chlorine tester 11 and a BOD tester 12, then the glass cover 3 is covered, then the whole device is started through a control key 5 on the detection device body 1, so that the turbidity detector 7, the electric conductivity detector 8, the ammonia nitrogen tester 9, the total phosphorus tester 10, the residual chlorine tester 11 and the BOD tester 12 in the detection device body 1 start to detect the sewage, then the signal acquisition module receives the data detected by each detection instrument, then the signals are isolated and input through a mutual inductor to realize the rising of the signals, then the signal acquisition module sends the signals to the signal processing module, the signal processing module carries out various treatments such as two-stage amplification, RC low-pass filtering, TIL7650 amplification triode and the like, make signal amplification, stable and accurate control module that sends to control module can receive control button 5's information, shows different data message on display 4, and when data exceeded standard data's value, control module can start bee calling organ, realizes that the alarm rings, reminds the staff to carry out the record.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multi-parameter sewage quality detection system, includes detection device body (1) and control module, its characterized in that: the device comprises a detection device body (1), four groups of supporting legs (2) are fixedly welded at the bottom end of the detection device body (1), a glass cover (3) is movably connected at the upper end of the detection device body (1), a display (4) and a control key (5) are arranged on the front surface of the detection device body (1), a handle (6) is fixedly connected on the glass cover (3), and a turbidity detector (7), a conductivity detector (8), an ammonia nitrogen tester (9), a total phosphorus tester (10), a residual chlorine tester (11) and a BOD tester (12) are fixedly arranged in the detection device body (1); the control module electric connection has power, display (4), bee calling organ, control button (5) and signal processing module, signal processing module electric connection has signal acquisition module, electric connection has the mutual-inductor to keep apart the input in the signal acquisition module circuit, and electric connection has signal amplification triode U2C in the signal acquisition module circuit, electric connection has CD4052 analog switch in the signal processing module circuit, and electric connection has RC low pass filter circuit to and electric connection has TIL7650 and amplifies the triode.

2. The multi-parameter sewage quality detection system according to claim 1, characterized in that: the turbidity detector (7) comprises a hernia lamp, a reflector and an astigmatism detector, wherein the hernia lamp and the reflector are symmetrically arranged and are positioned on two sides of the detection liquid.

3. The multi-parameter sewage quality detection system according to claim 1, characterized in that: the ammonia nitrogen tester (9) and the total phosphorus tester (10) adopt photometers for detection, and the light source receiver are respectively positioned at two sides of the detection liquid.

4. The multi-parameter sewage quality detection system according to claim 1, characterized in that: the residual chlorine tester (11) adopts a BCL-200A type tester.

5. The multi-parameter sewage quality detection system according to claim 1, characterized in that: the control module adopts ATM89C51 to control the singlechip.

6. The multi-parameter sewage quality detection system according to claim 1, characterized in that: the 1 st stage of the preamplifier in the signal processing module circuit adopts a differential connection method, and the amplification factor of the 2 nd stage inverting amplifier is adjusted by a RW2 multi-turn potentiometer.