CN219830702U - BOD5 detection device by differential pressure method - Google Patents
BOD5 detection device by differential pressure method Download PDFInfo
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- CN219830702U CN219830702U CN202223611506.5U CN202223611506U CN219830702U CN 219830702 U CN219830702 U CN 219830702U CN 202223611506 U CN202223611506 U CN 202223611506U CN 219830702 U CN219830702 U CN 219830702U
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- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 61
- 239000000523 sample Substances 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims description 18
- 101100462378 Danio rerio otpb gene Proteins 0.000 claims description 15
- 230000001939 inductive effect Effects 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 2
- 244000005700 microbiome Species 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000012895 dilution Substances 0.000 description 5
- 238000010790 dilution Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000012136 culture method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of environmental protection, and particularly relates to a BOD5 detection device by a differential pressure method. The utility model is provided with a display screen on the reagent bottle cap, an electric control board is arranged in the reagent bottle cap, a singlechip is arranged on the electric control board, the bottom of the reagent bottle cap is provided with a pressure probe, the pressure probe is connected with the singlechip, the singlechip obtains the air pressure value of the reagent bottle through the pressure probe and displays the pressure difference value through the display screen, and the stirrer is positioned in the middle of the reagent bottle and is sucked by the bottom magnetic suction piece, so that the reagent bottle is stable, the rotation speed of the stirrer is stable, and microorganisms can survive. The acquisition circuit and the control circuit are isolated by the upper plate and the lower plate, so that the utility model has simple structure and is convenient for wiring. The utility model adopts an internal battery to supply power, can be charged and has various power supply modes.
Description
Technical Field
The utility model belongs to the technical field of environmental protection, and particularly relates to a BOD5 detection device by a differential pressure method.
Background
BOD5 is five-day biochemical oxygen demand, is particularly used for reflecting comprehensive indexes of the pollution degree of water bodies by organic matters, is suitable for surface water, industrial wastewater and domestic sewage, and is also an important parameter for researching the biodegradability and biochemical treatment effect of wastewater and the process design and dynamics research of biochemical treatment wastewater. Biological oxidation of organic matter is a slow process that takes a long time to terminate. Thus, each country has been prescribed to uniformly use 5 days at 20 degrees centigrade as a standard condition for biochemical oxygen demand measurement for comparison, and the biochemical oxygen demand thus measured is designated as BOD5 (20 degrees centigrade) or only BOD5 is written. In BOD measurement, it is usually prescribed to use test conditions of 20℃for 5 days, and the result is expressed in mg/L of oxygen and is expressed as five-day biochemical oxygen demand. Generally, the five-day biochemical oxygen demand of the clean river is not more than 2mg/L, and if the biochemical oxygen demand is more than 10mg/L, foul smell is emitted.
At present, a traditional five-day dilution culture method is adopted to detect BOD5, specifically, a polluted water sample is taken, special dilution water is added according to an estimated pollution degree for dilution during measurement in order to ensure the conditions required by the biochemical process of water body, then the diluted water sample is divided into two parts, one part is used for measuring DO at the moment, the other part is used for culturing for 5 days at about 20 ℃ and then measuring DO, and the difference between the two parts is BOD5.
However, the traditional five-day dilution culture method is complex in operation and inconvenient to detect, and the old mercury pressure detection device is great in harm to human bodies. At present, a detection device which is easy and convenient to operate, can be used at any time and has no harm to human bodies is urgently needed.
Disclosure of Invention
Aiming at the problems of complicated operation and inconvenient detection of the traditional five-day dilution culture method, the utility model provides a differential pressure BOD5 detection device which is simple and convenient to operate and can be used at any time, comprising: a detection table;
a plurality of reagent bottles are arranged on the detection table, and reagent bottle caps are arranged on the reagent bottles;
a display screen is arranged on the reagent bottle cover;
an electric control board is arranged in the reagent bottle cap, and a singlechip is arranged on the electric control board;
the bottom of the reagent bottle cap is provided with a pressure probe which is connected with the singlechip;
the singlechip acquires the air pressure value of the reagent bottle through the pressure probe and displays the differential pressure value through the display screen.
Preferably, a temperature sensor is arranged in the reagent bottle cap;
the singlechip is connected with the temperature sensor, acquires the temperature inside the reagent bottle through the temperature sensor, and displays through the display screen.
Preferably, a stirrer is arranged inside the reagent bottle;
the inside of the detection table is provided with a magnetic attraction piece, a fixing piece and a motor in sequence from top to bottom;
the motor sucks the stirring rod through the magnetic suction piece.
Preferably, one side of the reagent bottle cap is provided with a USB interface, and a battery is arranged in the reagent bottle cap;
an electric quantity acquisition module is arranged on the electric control board;
the electric quantity acquisition module comprises a current acquisition unit;
the current acquisition unit comprises a power supply chip U1 and a power supply circuit;
the pin TEMP of the power supply chip U1 is connected with GND, and the pin GND of the power supply chip U1 is connected with GND;
the power supply chip U1 pin PROG is connected with the first end of the resistor R3, and the second end of the resistor R3 is connected with the pin TEMP and the pin GND respectively;
the power supply chip U1 pin CE is connected with a 5V power supply, the 5V power supply is connected with a first end of a capacitor C0, and a second end of the capacitor C0 is connected with GND;
the U1 pin VCC of the power supply chip is connected with a 5V power supply;
the pin GHRG of the power supply chip U1 is connected with the negative electrode of the light emitting diode DS 0;
the positive electrode of the light emitting diode DS0 is connected with the first end of the inductive impedance R4, and the second end of the inductive impedance R4 is connected with a 5V power supply;
the pin STDBY of the power supply chip U1 is connected with the cathode of the light emitting diode DS1, and the anode of the light emitting diode DS1 is connected with the first end of the inductive impedance R4;
the pin BAT of the power supply chip U1 is connected with the singlechip.
Preferably, the singlechip is an STM32 singlechip;
the electric quantity acquisition module further comprises a voltage acquisition unit;
the voltage acquisition unit comprises a chip OTP1, a chip OTP2 and a voltage acquisition chip U2, and the OTP1, the chip OTP2 and the voltage acquisition chip U2 are encapsulated through diffusion glue;
the pins VSSB and VDDB of the voltage acquisition chip U2 are respectively connected with the chip OTP 2;
the pin VBN of the voltage acquisition chip U2 is connected with the first end of the capacitor C2, and the second end of the capacitor C2 is connected with GND;
the pin VBP of the voltage acquisition chip U2 is connected with the first end of the capacitor C3, and the second end of the capacitor C3 is connected with GND;
the pin VSS of the voltage acquisition chip U2 is connected with GND, and the pin VBN and the pin VBP are both connected with the chip OTP 2;
the voltage acquisition chip U2 pin SDA is connected with the chip OTP1 and is connected with the first end of the resistor R7;
the second end of the resistor R7 is connected with the first end of the resistor R5, the second end of the resistor R5 is connected with the first end of the capacitor C1, and the second end of the capacitor C1 is connected with the GND;
the voltage acquisition chip U2 pin SCL is connected with the chip OTP1 and connected with the first end of the resistor R8;
the second end of the resistor R8 is connected with the first end of the resistor R6, and the second end of the resistor R6 is connected with a 3.3V power supply;
the U2 pin VDD of the voltage acquisition chip is connected with a 3.3V power supply.
Preferably, the detection table is provided with a switch button, and the bottom of the switch button is provided with a power port;
the switch button is connected with the motor and used for controlling the motor to run;
one side of the detection table is provided with a heat dissipation net, and the bottom of the detection table is provided with a foot pad.
Preferably, the power supply chip U1 adopts a TP4056 chip;
the voltage acquisition chip U2 adopts a JHM1201 chip;
the OTP1201 chip is adopted for the chip OTP1 and the chip OTP 2.
From the above technical scheme, the utility model has the following advantages:
according to the utility model, the old mercury pressure detection device is replaced by the pressure probe, so that the harm to human bodies caused by mercury liquid leakage is avoided, meanwhile, the pressure probe can monitor the air pressure value in the reagent bottle in real time by continuously supplying power to the battery, and the singlechip calculates the initial air pressure value in the reagent bottle and the air pressure value after 5 days to obtain BOD5, and the BOD5 is displayed by the display screen. According to the utility model, the temperature inside the reagent bottle is obtained in real time through the temperature sensor, and heat dissipation is performed through the heat dissipation net. According to the utility model, the magnetic suction sheet is rotated by the motor, and the stirrer is driven to rotate by the magnetic force by the magnetic suction sheet, so that the stirring of the liquid in the reagent bottle is realized, and the detection accuracy is improved. According to the utility model, the electric quantity in the battery is monitored in real time through the electric quantity acquisition module, when the electric quantity is insufficient, the battery is charged through the USB interface, and meanwhile, the data transmission with the singlechip can be carried out through the USB interface.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the control of a BOD5 detection device by differential pressure method.
Fig. 2 is a schematic diagram of agitation control.
FIG. 3 is a schematic diagram of a BOD5 detection device by differential pressure method.
FIG. 4 is a schematic illustration of a reagent bottle.
Fig. 5 is a schematic diagram of a test bench.
Fig. 6 is a circuit diagram of a current collection unit.
Fig. 7 is a circuit diagram of a voltage acquisition unit.
FIG. 8 is a cross-sectional view of a reagent bottle.
In the figure: 1-singlechip, 2-display screen, 3-electric quantity acquisition module, 4-pressure probe, 5-temperature sensor, 6-reagent bottle, 7-motor, 8-magnetism inhale piece, 9-agitator, 10-reagent bottle lid, 11-test bench, 12-USB interface, 14-power mouth, 15-shift knob, 16-heat dissipation net, 17-mounting, 18-relay circuit board.
Detailed Description
In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.
The utility model provides a differential pressure BOD5 detection device, as shown in figures 1 to 7, comprising: the detection table 11 is provided with holes for placing and fixing the reagent bottles 6, each hole corresponds to the reagent bottles 6 one by one, and detection of 6 polluted water samples can be realized simultaneously. The two sides of the outside of the detection table 11 are provided with heat dissipation nets 16, one side of the heat dissipation nets is provided with a switch button 15 and a power port 14, and the lower side of the heat dissipation nets is provided with a foot pad. Inside the detection platform 11, install magnetism from top to bottom and inhale piece 8, mounting 17 and motor 7 in proper order, still install relay circuit board 18 inside the detection platform 11, inhale piece 8, motor 7 through the mounting and fix, motor 7 passes through relay circuit board 18 and is connected with shift knob 15. The switch button 15 controls the motor 7 to run through the relay circuit board 18, and dissipates heat generated by the motor through the heat dissipation net 16, and the motor 7 adopts a stepping motor or a servo motor.
The reagent bottle 6 and reagent bottle lid 10 threaded connection, the sealing washer is installed with reagent bottle lid 10 screwed connection department to reagent bottle 6 mouth, makes reagent bottle 6 inside sealed, prevents that gas leakage from leading to the pressure release, influences the accuracy that pollutes the water sample and detects, and stirring piece 9 has been placed to reagent bottle 6 inside, stirs reagent bottle 6 inside liquid through stirring piece 9, mainly in microorganism culture process, needs to stir the activity that keeps the microorganism to the solution, and the piece 8 is inhaled to magnetism through stirring piece 9 add and accomplish the rotation to the solution. Before stirring is started, the stirrer 9 is positioned in the middle of the reagent bottle 6 and is sucked by the bottom magnetic suction piece 8, so that the motor 7 is restarted to drive the solution to rotate, otherwise, the stirrer is positioned in the edge zone of the reagent bottle 6, the stirrer cannot drive rotation, and the rotating speed cannot be too high. The rotating machine is kept at 60-100 rpm, so that the microorganisms are not easy to survive.
The reagent bottle cap 10 is internally provided with an electric control board, and the electric control board comprises an upper circuit board and a lower circuit board. The acquisition and control circuit is isolated by an upper circuit board and a lower circuit board, the lower circuit board is used for signal acquisition, and the upper circuit board is used for controlling a core circuit, so that the design is convenient for wiring. An upper circuit board, a battery and a lower circuit board are sequentially fixed inside the reagent bottle cap 10, and the upper circuit board and the lower circuit board are fixedly connected with the reagent bottle cap 10 through screws. The reagent bottle cap 10 is provided with a probe hole for placing the pressure probe 4, and the pressure probe 4 adopts a pressure sensor to record the pressure change in the reagent bottle 6. The pressure inside the closed reagent is mainly collected, and in the culture process, as the reagent bottle 6 is a closed space, oxygen of the reagent is consumed when the microorganism breathes, and carbon dioxide is generated. The evolved carbon dioxide is absorbed by the NAOH in the reagent bottle 6 so that the air in the bottle is reduced and the pressure is lowered, thereby creating a difference. This difference will be visually displayed on the screen. This difference is how much oxygen is absorbed and thus converted to solubility. The temperature acquisition is realized through the temperature sensor 5, namely the temperature inside the reagent bottle 6 is mainly acquired, the temperature of the culture environment is required to be kept at 20+/-1 ℃, and the temperature is also intuitively displayed on a screen. The electric quantity collection is to collect the current battery in real time, and the battery adopts a rechargeable lithium battery. Due to the convenience design of the utility model, the internal battery can be used for supplying power, the battery can be charged, and the acquisition circuit comprises voltage and current acquisition.
The singlechip 1 adopts an STM32 singlechip, the singlechip 1 takes an STM32l1051c8t6 chip as a core, and the chip has a low power consumption mode, so that the loss of electric quantity can be greatly reduced in the use process, and the detection times are increased. The chip realizes the functions of automatic sampling, automatic processing, real-time monitoring, manual setting and the like, and the specific realization functions are as follows:
after the pressure signal, the temperature signal and the photoelectric analog quantity are acquired, A/D conversion is carried out, the acquired temperature value or pressure value can be obtained through corresponding data calculation and analysis by the singlechip 1, and the corresponding BOD value can be obtained through internal processing.
The interface of the display screen 2 is written through an upper computer, the interface is imported into the display screen 2 through hardware equipment, 8 channels are adopted between the single chip microcomputer 1 and the screen, and 8 units of binary codes form a character for parallel transmission, so that the stability and the accuracy of the display screen 2 are ensured. The display screen 2 adopts a touch display screen, and the display screen 2 displays current data in real time and can also view history related data at any time. Some of the relevant items displayed on the interface of the display screen 2 can also be changed by changing the upper computer or software programming and transmitting the data through the USB interface 12. One side of the reagent bottle cap 10 is provided with a USB interface 12, a battery is arranged in the reagent bottle cap 10, and an electric quantity acquisition module 3 is arranged on the electric control board.
The electric quantity acquisition module 3 includes the electric current acquisition unit, and the electric current acquisition unit includes power supply chip U1 and power supply circuit, and power supply chip U1 pin TEMP connects GND, and power supply chip U1 pin GND connects GND, and power supply chip U1 pin PROG is connected with resistance R3 first end, and resistance R3 second end is connected with pin TEMP, pin GND respectively, changes the size of charging current value through R3 resistance value.
The U1 pin CE of the power supply chip is connected with a 5V power supply, and the 5V power supply is a direct current power supply. The 5V power supply is connected with the first end of a capacitor C0, the second end of the capacitor C0 is connected with GND, a pin VCC of a power supply chip U1 is connected with the 5V power supply, a pin GHRG of the power supply chip U1 is connected with the cathode of a light emitting diode DS0, the anode of the light emitting diode DS0 is connected with the first end of an inductive impedance R4, the second end of the inductive impedance R4 is connected with the 5V power supply, a pin STDBY of the power supply chip U1 is connected with the cathode of the light emitting diode DS1, the anode of the light emitting diode DS1 is connected with the first end of the inductive impedance R4, and a pin BAT of the power supply chip U1 is connected with the singlechip 1. According to the utility model, the charging state is displayed through the light emitting diode DS0 and the light emitting diode DS1, and the pin GHRG of the power supply chip U1 is a charging state indicating end.
The electric quantity acquisition module 3 further comprises a voltage acquisition unit, wherein the voltage acquisition unit comprises a chip OTP1, a chip OTP2 and a voltage acquisition chip U2, and the OTP1, the chip OTP2 and the voltage acquisition chip U2 are encapsulated through diffusion glue, so that the effects of moisture prevention, dust prevention, corrosion prevention and vibration prevention can be achieved through the encapsulation, and the circuit board and the circuit are prevented from being electrified.
The voltage acquisition chip U2 pin VSSB, VDDB is connected with chip OTP2 respectively, voltage acquisition chip U2 pin VBN is connected with the first end of electric capacity C2, electric capacity C2 second termination GND, voltage acquisition chip U2 pin VBP is connected with the first end of electric capacity C3, electric capacity C3 second termination GND, voltage acquisition chip U2 pin VSS connects GND, pin VBN, pin VBP all is connected with chip OTP2, voltage acquisition chip U2 pin SDA is connected with chip OTP1, and is connected with the first end of resistance R7, the second end of resistance R7 is connected with the first end of resistance R5, the second end of resistance R5 is connected with the first end of electric capacity C1, the second end of electric capacity C1 is connected with GND, voltage acquisition chip U2 pin SCL is connected with chip OTP1, and is connected with the first end of resistance R8, the second end of resistance R8 is connected with the first end of resistance R6, the second end of resistance R6 is connected with 3.3V power, voltage acquisition chip U2 pin VDD is connected with 3.3V power, 3.3V power.
The voltage acquisition chip U2 pin SCL is a clock line, the voltage acquisition chip U2 pin SDA is a bidirectional data line, when data are transmitted, the highest bit is sent first, the voltage acquisition chip U2 sends out a starting signal, the pin SDA jumps from high level to low level during the high level of the pin SCL, and then the voltage acquisition chip U2 sends out one byte of data. The voltage acquisition chip U2 pin VPP refers to the voltage from the lowest value to the highest value of an alternating current or pulse signal, and is also called a peak value. The power supply chip U1 adopts a TP4056 chip, the voltage acquisition chip U2 adopts a JHM1201 chip, and the chips OTP1 and OTP2 both adopt OTP1201 chips. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the embodiments of the utility model is for the purpose of describing embodiments of the utility model only and is not intended to be limiting of the utility model.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A differential pressure BOD5 detection device, comprising: a detection table;
a plurality of reagent bottles are arranged on the detection table, and reagent bottle caps are arranged on the reagent bottles;
a display screen is arranged on the reagent bottle cover;
an electric control board is arranged in the reagent bottle cap, and a singlechip is arranged on the electric control board;
the bottom of the reagent bottle cap is provided with a pressure probe which is connected with the singlechip;
the singlechip acquires the air pressure value of the reagent bottle through the pressure probe and displays the differential pressure value through the display screen.
2. The BOD5 detection device according to claim 1, wherein,
a temperature sensor is arranged in the reagent bottle cap;
the singlechip is connected with the temperature sensor, acquires the temperature inside the reagent bottle through the temperature sensor, and displays through the display screen.
3. The BOD5 detection device according to claim 1, wherein,
a stirrer is arranged in the reagent bottle;
the inside of the detection table is provided with a magnetic attraction piece, a fixing piece and a motor in sequence from top to bottom;
the motor sucks the stirring rod through the magnetic suction piece.
4. The BOD5 detection device according to claim 1, wherein,
one side of the reagent bottle cap is provided with a USB interface, and a battery is arranged in the reagent bottle cap;
an electric quantity acquisition module is arranged on the electric control board;
the electric quantity acquisition module comprises a current acquisition unit;
the current acquisition unit comprises a power supply chip U1 and a power supply circuit;
the pin TEMP of the power supply chip U1 is connected with GND, and the pin GND of the power supply chip U1 is connected with GND;
the power supply chip U1 pin PROG is connected with the first end of the resistor R3, and the second end of the resistor R3 is connected with the pin TEMP and the pin GND respectively;
the power supply chip U1 pin CE is connected with a 5V power supply, the 5V power supply is connected with a first end of a capacitor C0, and a second end of the capacitor C0 is connected with GND;
the U1 pin VCC of the power supply chip is connected with a 5V power supply;
the pin GHRG of the power supply chip U1 is connected with the negative electrode of the light emitting diode DS 0;
the positive electrode of the light emitting diode DS0 is connected with the first end of the inductive impedance R4, and the second end of the inductive impedance R4 is connected with a 5V power supply;
the pin STDBY of the power supply chip U1 is connected with the cathode of the light emitting diode DS1, and the anode of the light emitting diode DS1 is connected with the first end of the inductive impedance R4;
the pin BAT of the power supply chip U1 is connected with the singlechip.
5. The BOD5 detection device according to claim 1, wherein,
the singlechip adopts an STM32 singlechip;
the electric quantity acquisition module further comprises a voltage acquisition unit;
the voltage acquisition unit comprises a chip OTP1, a chip OTP2 and a voltage acquisition chip U2, and the OTP1, the chip OTP2 and the voltage acquisition chip U2 are encapsulated through diffusion glue;
the pins VSSB and VDDB of the voltage acquisition chip U2 are respectively connected with the chip OTP 2;
the pin VBN of the voltage acquisition chip U2 is connected with the first end of the capacitor C2, and the second end of the capacitor C2 is connected with GND;
the pin VBP of the voltage acquisition chip U2 is connected with the first end of the capacitor C3, and the second end of the capacitor C3 is connected with GND;
the pin VSS of the voltage acquisition chip U2 is connected with GND, and the pin VBN and the pin VBP are both connected with the chip OTP 2;
the voltage acquisition chip U2 pin SDA is connected with the chip OTP1 and is connected with the first end of the resistor R7;
the second end of the resistor R7 is connected with the first end of the resistor R5, the second end of the resistor R5 is connected with the first end of the capacitor C1, and the second end of the capacitor C1 is connected with the GND;
the voltage acquisition chip U2 pin SCL is connected with the chip OTP1 and connected with the first end of the resistor R8;
the second end of the resistor R8 is connected with the first end of the resistor R6, and the second end of the resistor R6 is connected with a 3.3V power supply;
the U2 pin VDD of the voltage acquisition chip is connected with a 3.3V power supply.
6. The apparatus for detecting BOD5 by differential pressure method according to claim 3,
the detection table is provided with a switch button, and the bottom of the switch button is provided with a power port;
the switch button is connected with the motor and used for controlling the motor to run;
one side of the detection table is provided with a heat dissipation net, and the bottom of the detection table is provided with a foot pad.
7. The apparatus for detecting BOD5 by differential pressure method according to claim 3,
the power supply chip U1 adopts a TP4056 chip;
the voltage acquisition chip U2 adopts a JHM1201 chip;
the OTP1201 chip is adopted for the chip OTP1 and the chip OTP 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223611506.5U CN219830702U (en) | 2022-12-30 | 2022-12-30 | BOD5 detection device by differential pressure method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223611506.5U CN219830702U (en) | 2022-12-30 | 2022-12-30 | BOD5 detection device by differential pressure method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219830702U true CN219830702U (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223611506.5U Active CN219830702U (en) | 2022-12-30 | 2022-12-30 | BOD5 detection device by differential pressure method |
Country Status (1)
| Country | Link |
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| CN (1) | CN219830702U (en) |
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2022
- 2022-12-30 CN CN202223611506.5U patent/CN219830702U/en active Active
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