CN209858408U - Water quality detection equipment - Google Patents
Water quality detection equipment Download PDFInfo
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- CN209858408U CN209858408U CN201920280160.4U CN201920280160U CN209858408U CN 209858408 U CN209858408 U CN 209858408U CN 201920280160 U CN201920280160 U CN 201920280160U CN 209858408 U CN209858408 U CN 209858408U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 238000001514 detection method Methods 0.000 title claims abstract description 53
- 230000003287 optical effect Effects 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims description 43
- 239000000758 substrate Substances 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 10
- 238000012372 quality testing Methods 0.000 abstract description 10
- 239000005416 organic matter Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000003760 hair shine Effects 0.000 abstract description 3
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
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- 238000009841 combustion method Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
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- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
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- 239000005871 repellent Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The application relates to a water quality testing equipment, including waiting to examine that the detection water holds device, light source board, optical detector board and control mainboard, light source board and optical detector board set up respectively in waiting to examine the relative both sides that the detection water held the device, and light source board and optical detector board are the connection control mainboard respectively. Above-mentioned water quality testing equipment utilizes the ultraviolet ray to wait to detect water and shines, because the organic matter that waits to detect aquatic has certain absorption to the ultraviolet ray for the transmitted light intensity of the ultraviolet ray after waiting to detect water changes. As long as the transmission light intensity emitted after the ultraviolet light passes through the water to be detected and the corresponding preset water quality parameters are used, the first concentration data of the corresponding object to be detected in the water to be detected can be calculated. Meanwhile, in order to avoid the influence of external environmental factors on the accuracy of the measured first concentration data, the first concentration data is compensated according to preset compensation parameters to obtain final concentration data of the object to be measured, so that the detection of the water quality is realized.
Description
Technical Field
The application relates to the technical field of water quality safety, in particular to a water quality detection device.
Background
With water environment pollution caused by industrial development and continuous improvement of the living standard of people, people pay more and more attention to the safety and health of drinking water, and the monitoring of the water quality state also becomes a strong demand. Therefore, in daily life, corresponding equipment is usually adopted to detect whether the total organic carbon (TOC, which refers to the total carbon content of soluble and suspended organic matters in water) in drinking water meets the standard of health and safety.
The traditional water quality detection mainly adopts a combustion method, wherein the combustion method can oxidize organic matters in water and then directly obtain the content of total organic carbon in the water. However, the combustion method is greatly affected by the external environment and cannot perform real-time rapid detection. Therefore, the traditional water quality detection method has the defect of poor detection reliability.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a water quality detection device for solving the problem of poor detection reliability of the conventional water quality detection method.
A water quality detecting apparatus comprising: a water-to-be-detected holding device for holding water to be detected; a light source plate for emitting ultraviolet light to the water to be detected; a light detector plate for receiving the ultraviolet light emitted after passing through the water to be detected; the control mainboard is used for obtaining the transmission light intensity of ultraviolet light emitted after the ultraviolet light passes through water to be detected, calculating to obtain first concentration data of an object to be detected in the water to be detected according to the transmission light intensity of the ultraviolet light and preset water quality parameters, and performing compensation treatment to obtain the concentration data of the object to be detected according to the first concentration data and preset compensation parameters; the light source board with the optical detector board set up respectively in wait to examine the relative both sides that the water that detects held the device, the light source board with the optical detector board is connected respectively the control mainboard.
In one embodiment, the light source board includes: light source base plate, ultraviolet emitting diode and visible light emitting diode, ultraviolet emitting diode with visible light emitting diode all set up in the light source base plate, be provided with light source board interface on the light source base plate, ultraviolet emitting diode with visible light emitting diode all passes through light source board interface connection the control mainboard.
In one embodiment, the ultraviolet light emitting diode is a deep ultraviolet light emitting diode.
In one embodiment, the photodetector panel includes: the ultraviolet detector and the visible light detector are connected with the control mainboard through the optical detector board interface.
In one embodiment, the water quality detection device further comprises a first thermistor and a second thermistor, the first thermistor is arranged on the light source substrate, and the first thermistor is connected with the control main board through the light source board interface; the second thermistor is arranged on the optical detection substrate and is connected with the control main board through the optical detector board interface.
In one embodiment, the control motherboard includes: a main board substrate, a power supply processing circuit, a light source driving circuit, a signal operational amplifier circuit, an analog-to-digital conversion circuit and a calculation processing unit, the power supply processing circuit, the light source driving circuit, the signal operational amplifier circuit, the analog-to-digital conversion circuit and the calculation processing unit are all arranged on the mainboard substrate, the light source driving circuit is used for connecting an external power supply, the signal operational amplifier circuit and the calculation processing unit are respectively connected with the power supply processing circuit, the signal operational amplifier circuit is connected with the analog-to-digital conversion circuit, the analog-to-digital conversion circuit is connected with the calculation processing unit, the mainboard base plate is provided with an optical detector board interface and a light source board interface, the signal operational amplifier circuit is connected with the optical detector board through the optical detector board interface, and the light source driving circuit is connected with the light source board through the light source board interface.
In one embodiment, the power supply processing circuit comprises a low-dropout linear voltage stabilizing circuit and a power supply circuit, the low-dropout linear voltage stabilizing circuit is connected with the power supply circuit, the power supply circuit is connected with the signal operational amplifier circuit, and the low-dropout linear voltage stabilizing circuit is connected with the calculation processing unit.
In one embodiment, the computational processing unit is a micro-control unit.
In one embodiment, the equipment still includes quick-operation joint and connector, the quick-operation joint with the connector is connected, the connector is connected wait to detect water and hold the device, the quick-operation joint is used for connecting outside waterway equipment.
In one embodiment, the equipment still includes the protective housing, wait to detect water hold the device the light source board the light detector board with the control mainboard all sets up in the inside of protective housing.
Above-mentioned water quality testing equipment utilizes the ultraviolet ray to wait to detect water and shines, because the organic matter that waits to detect aquatic has certain absorption to the ultraviolet ray for the transmitted light intensity of the ultraviolet ray after waiting to detect water takes place certain change. As long as the transmission light intensity emitted after the ultraviolet light passes through the water to be detected and the corresponding preset water quality parameters are used, the first concentration data of the corresponding object to be detected in the water to be detected can be calculated. Meanwhile, in order to avoid the influence of external environmental factors on the accuracy of the measured first concentration data, the first concentration data is compensated according to preset compensation parameters to obtain final concentration data of the object to be measured, so that the detection of the water quality is realized. The scheme adopts the ultraviolet spectroscopy to realize the detection of water quality, can realize rapid detection, and simultaneously carries out compensation processing on the first concentration data obtained by preliminary detection through the compensation parameters, thereby effectively avoiding the influence of the external environment on the detection result, and compared with the traditional water quality detection method, the method has the advantage of strong detection reliability.
Drawings
FIG. 1 is a schematic diagram of a water quality detecting apparatus according to an embodiment;
FIG. 2 is a schematic diagram of the power board, the photo-detector board and the control board in one embodiment;
FIG. 3 is a schematic structural diagram of a power board, a photo-detector board and a control main board in another embodiment;
FIG. 4 is a schematic structural diagram of a water quality detecting apparatus in another embodiment;
FIG. 5 is a schematic view of a water quality detecting apparatus according to still another embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, a water quality detecting apparatus includes: a water-to-be-detected holding device 110 for holding water to be detected; a light source plate 120 emitting ultraviolet light to water to be detected; a photo detector plate 130 for receiving ultraviolet light emitted after passing through water to be detected; the control main board 140 is used for acquiring the transmission light intensity of ultraviolet light emitted after passing through water to be detected, calculating to obtain first concentration data of an object to be detected in the water to be detected according to the transmission light intensity of the ultraviolet light and preset water quality parameters, and performing compensation processing according to the first concentration data and preset compensation parameters to obtain the concentration data of the object to be detected; light source board 120 and light detector board 130 set up respectively in waiting to examine the relative both sides that water held device 110, and light source board 120 and light detector board 130 are the connection control mainboard 140 respectively.
Specifically, the control main board 140 first obtains the transmitted light intensity of the ultraviolet light emitted after passing through the water to be detected. Ultraviolet light is a generic term for radiation in the electromagnetic spectrum having wavelengths from 0.01 micron to 0.40 micron and is not capable of causing human vision. The ultraviolet light has shorter wavelength than visible light and longer wavelength than X-ray electromagnetic radiation. The ultraviolet light has a wavelength in the range of 10-400nm in the electromagnetic spectrum. Starting from the short wavelength limit of visible light and overlapping with the long wavelength of X-ray, the ultraviolet light is divided into A-ray, B-ray and C-ray (UVA, UVB and UVC, respectively), and the wavelength ranges are 400-315nm, 315-280nm and 280-190nm, respectively. Wait to detect water and hold in waiting to detect water and hold device 110, waiting to detect the relative both sides that water held device 110 and be provided with light source board 120 and light detector board 130 respectively, the ultraviolet ray passes through the light source board 120 and produces, then hold device 110 through waiting to detect water and wait to detect water and shine after received by light detector board 130, light detector board 130 transmits to control mainboard 140 after the light signal conversion of the ultraviolet ray of receiving is the signal of telecommunication. The control main board 140 performs corresponding processing on the electrical signal to obtain the transmitted light intensity of the ultraviolet light after being absorbed by the organic matter in the water to be detected. It should be noted that, in the present embodiment, the transmitted light intensity of the ultraviolet light is obtained by processing the electric signal acquired by the control main board 140. It is understood that in other embodiments, the light detector board 130 may further perform calculation processing to obtain the transmitted light intensity of the ultraviolet light while converting the optical signal of the ultraviolet light into an electrical signal after receiving the optical signal, and directly send the transmitted light intensity to the control main board 140.
And calculating to obtain first concentration data of the object to be detected in the water to be detected according to the transmitted light intensity of the ultraviolet light and the preset water quality parameter. The control main board 140 has a certain storage function, and when the content of some substances in the water to be detected needs to be detected, preset water quality parameters of corresponding objects to be detected can be preset in the control main board 140, and then calculation can be performed according to the obtained transmission light intensity of the ultraviolet light, so that first concentration data of the corresponding objects to be detected is obtained. It should be noted that in one embodiment, the pre-set water quality parameters include the molar absorption coefficient, also called molar extinction coefficient, which is numerically equal to the absorbance of the solution at a certain wavelength at a concentration of 1mol/L and a liquid layer thickness of 1cm, the intensity of the incident light of the ultraviolet light and the liquid layer thickness (also called optical path length). The molar absorption coefficient is related to the nature of the object to be detected, the solvent and the wavelength of light, and the molar absorption coefficients are different when the object to be detected is different, so that the concentration detection of different objects to be detected in the water to be detected can be realized by setting different molar absorption coefficients. In one embodiment, the object to be detected may be TOC, which is the total amount of carbon contained in the soluble and suspended organic matters in the water body, that is, in this embodiment, the first concentration data of TOC in the water to be detected may be preliminarily obtained by calculating the transmitted light intensity of the ultraviolet rays and the preset water quality parameter related to TOC in the water to be detected. In other embodiments, the analyte may be of other types, such as COD (Chemical Oxygen Demand), and the concentration detection of different analytes can be realized only by setting different preset water quality parameters related to the analyte in the control motherboard 140.
Further, in an embodiment, the step of calculating according to the transmitted light intensity of the ultraviolet light and the preset water quality parameter specifically comprises:where C represents the first concentration data of the analyte, lgIt1 represents the transmitted light intensity of the ultraviolet light, ∈ represents the molar absorption coefficient, and b represents the liquid layer thickness.
Specifically, according to lambert-beer's law, there are:where a represents absorbance, and Io1 represents incident light intensity of ultraviolet light. In this example, for the purpose of calculating the first concentration data of the specimen, the molar absorption coefficient, the incident light intensity of ultraviolet light, and the molar absorption coefficient were regarded as 1 for the same specimen,The thickness of the liquid layer is a fixed value, so that the first concentration data of the object to be detected can be directly calculated after the transmitted light intensity of the ultraviolet light is obtained.
And performing compensation treatment according to the first concentration data and preset compensation parameters to obtain the concentration data of the object to be detected, wherein the concentration data represents the water quality of the water to be detected. The control main board 140 further stores preset compensation parameters, and after the control main board 140 calculates the corresponding concentration data of the object to be detected according to the transmitted light intensity of the ultraviolet light and the preset water quality parameters, in order to ensure the reliability of the obtained concentration data of the object to be detected, after the concentration data (i.e. the first concentration data) of the object to be detected is preliminarily obtained, the control main board 140 can also compensate the obtained first concentration data according to the preset compensation parameters, so as to further enhance the detection reliability of the water quality detection method.
In an embodiment, referring to fig. 2, the light source board 120 includes a light source substrate 121, an ultraviolet light emitting diode 122 and a visible light emitting diode 123, the ultraviolet light emitting diode 122 and the visible light emitting diode 123 are both disposed on the light source substrate 121, a light source board 120 interface is disposed on the light source substrate 121, and the ultraviolet light emitting diode 122 and the visible light emitting diode 123 are both connected to the control motherboard 140 through the light source board 120 interface.
Specifically, the ultraviolet light emitting diode 122(UV LED) is a diode capable of emitting ultraviolet rays having a wavelength of 400nm or less. Be provided with ultraviolet emitting diode 122 and visible light emitting diode 123 on the light source base plate 121 of light source board 120, can produce the ultraviolet ray through emitting diode outside and shine to waiting to examine the measuring water, visible light emitting diode 123 can emit the visible light simultaneously and shine to waiting to examine the measuring water, and then realize the turbidity compensation operation to preliminary testing result.
It should be noted that in one embodiment, the ultraviolet light emitting diode 122 is a deep ultraviolet light emitting diode. The ultraviolet light emitting diode 122 may be classified into a near ultraviolet light emitting diode and a deep ultraviolet light emitting diode according to the wavelength of the emitted ultraviolet light, and the ultraviolet light emitting diode having a light emitting wavelength of more than 380nm is referred to as a near ultraviolet light emitting diode, and the ultraviolet light emitting diode shorter than 300nm is referred to as a deep ultraviolet light emitting diode. Further, in one embodiment, the UV LEDs 122 are deep UV LEDs in the wavelength range of 200nm to 300 nm. It is understood that in other embodiments, other bands of ultraviolet light emitting diodes may be used, as long as the ultraviolet light emitting diodes can emit ultraviolet light to irradiate the water to be detected. It is understood that, in one embodiment, the visible light emitting diode 123 with a certain wavelength may be selected as well, for example, the visible light emitting diode 123 with a wavelength of 400nm to 700nm is selected as the visible light source, and the turbidity compensation operation for the first concentration data of the object to be measured is realized.
In an embodiment, referring to fig. 2, the light detector board 130 includes a light detection substrate 131, an ultraviolet detector 132, and a visible light detector 133, the ultraviolet detector 132 and the visible light detector 133 are disposed on the light detection substrate 131, a light detector board 130 interface is disposed on the light detection substrate 131, and the ultraviolet detector 132 and the visible light detector 133 are both connected to the control motherboard 140 through the light detector board 130 interface.
Specifically, corresponding to the light source board 120, the light detection substrate 131 is provided with a corresponding ultraviolet detector 132 and a corresponding visible light detector 133, which respectively receive the ultraviolet light and the visible light emitted after passing through the water to be detected, and then respectively convert corresponding optical signals into electrical signals to be respectively output to the control motherboard 140 for calculation, so as to respectively obtain the transmission light intensity of the ultraviolet light and the transmission light intensity of the visible light.
In one embodiment, referring to fig. 2, the water quality detecting apparatus further includes a first thermistor 180 and a second thermistor 190, the first thermistor 180 is disposed on the light source substrate 121, and the first thermistor 180 is connected to the control main board 140 through the light source board 120; the second thermistor 190 is disposed on the photo-detecting substrate 131, and the second thermistor 190 is connected to the control main board 140 through the photo-detecting board 130.
Specifically, the light source substrate 121 is also provided with a first thermistor 180, the light detector substrate 131 is provided with a second thermistor 190, and the resistances of the first thermistor 180 and the second thermistor 190 are respectively changed with the temperature of the light source board 120 or the temperature of the light detector board 130 through corresponding circuits. Through the resistance value change condition of the first thermistor 180, the temperature compensation operation can be further performed on the second concentration data of the object to be detected after the turbidity compensation, and the secondary compensation is realized. Meanwhile, the optical detection substrate 131 is further provided with a second thermistor 190, and the temperature compensation operation of the second concentration data of the object to be detected is realized by simultaneously obtaining the resistance value of the second thermistor 190 and the resistance value of the first thermistor 180, so that the accuracy of the concentration data of the object to be detected is further improved.
In one embodiment, the control main board 140 first performs a turbidity compensation process according to the first concentration data and a preset turbidity compensation parameter to obtain second concentration data of the object to be measured; and then carrying out temperature compensation processing according to the second concentration data and preset temperature compensation parameters to obtain the concentration data of the object to be measured.
Specifically, turbidity refers to the degree of obstruction of light passing through by a solution, and includes light scattering by suspended matter and light absorption by solute molecules. The turbidity of water is related not only to the content of suspended substances in the water, but also to their size, shape, refractive index, etc. That is, even under the condition that the concentration data of the object to be detected are consistent, if the turbidity of the water to be detected is inconsistent under the influence of other substances, the first concentration data measured under different turbidity conditions are different from each other, that is, the first concentration data are influenced by the turbidity of the water to be detected, so that a certain detection error is generated. In order to reduce errors and enable the concentration data of the object to be detected by the method to be more accurate, corresponding turbidity compensation is carried out on the first concentration data according to preset turbidity compensation parameters, and the reliability of the water quality detection method is effectively improved. In the working process of the light source board 120 and the light detector board 130, the temperature increases with the increase of time, and the temperature may cause a deviation effect on the efficiency of the light source board 120 and the light detector board 130, that is, even in water with the same concentration of the object to be measured, in the continuous working process, the second concentration data of the object to be measured, which is obtained by detection, may also be changed due to the influence of the temperature. Therefore, in this embodiment, the temperature compensation process is performed on the second concentration data of the analyte obtained after the turbidity compensation process, so as to reduce the influence of the temperature on the detected second concentration data of the analyte, thereby further enhancing the reliability of the water quality detection method.
Further, in one embodiment, the control motherboard 140 obtains the transmitted light intensity of the visible light emitted after passing through the water to be detected; obtaining a turbidity compensation value according to the transmission light intensity of the visible light and a preset turbidity compensation parameter; and obtaining second concentration data of the object to be detected according to the first concentration data and the turbidity compensation value.
Specifically, similar to the above-mentioned transmitted light intensity of the ultraviolet light after acquiring the water to be detected, the light source board 120 can also emit visible light, the visible light emitted through the light source board 120 emits the water to be detected to the optical detector board 130, and the optical detector board 130 has a function of receiving the visible light. The optical detector board 130 receives the optical signal of the visible light, converts the optical signal into an electrical signal, and transmits the electrical signal to the control main board 140, and the control main board 140 obtains the corresponding transmission light intensity of the visible light after calculation processing. The control main board 140 stores preset turbidity compensation parameters, and the preset turbidity compensation parameters include a preset visible light transmission light intensity and a corresponding preset turbidity compensation value. After obtaining the transmission light intensity of the visible light, the control motherboard 140 performs contrastive analysis with the preset transmission light intensity of the visible light, and then directly obtains the preset turbidity compensation value corresponding to the transmission light intensity, that is, the corresponding turbidity compensation value required by the transmission light intensity of the visible light. And after the turbidity compensation value is obtained, directly calculating according to the corresponding turbidity compensation value and the first concentration data, so that second concentration data of the object to be detected in the water to be detected can be obtained.
In one embodiment, the control motherboard 140 further obtains a first thermistor resistance value and a second thermistor resistance value; obtaining a temperature compensation value according to the resistance value of the first thermistor, the resistance value of the second thermistor and a preset temperature compensation parameter; and obtaining the concentration data of the object to be measured according to the second concentration data and the temperature compensation value.
Specifically, the first thermistor resistance value is a resistance value of the first thermistor 180 disposed on the light source board 120 of the water quality detecting apparatus, and the second thermistor resistance value is a resistance value of the second thermistor 190 disposed on the photo detector board 130 of the water quality detecting apparatus. The first thermistor 180 is disposed on the light source board 120, and a temperature change condition of the light source board 120 can be intuitively obtained through a resistance value change of the first thermistor 180. Therefore, in the present embodiment, only the thermistors are required to be respectively disposed on the direct acquisition power board and the photo-detector board 130, and then different temperature compensation operations are realized through the resistance value changes of the first thermistor 180 and the second thermistor 190. It is understood that, in other embodiments, the temperature data of the light source board 120 and the light detector board 130 may also be directly obtained by a temperature acquisition device (e.g., a temperature sensor, etc.), and then a corresponding temperature compensation operation is performed according to the temperature data, so that temperature compensation on the second concentration data of the object to be measured can also be implemented, so that the finally obtained concentration data of the object to be measured is more accurate and reliable.
Similar to the turbidity compensation operation, the preset temperature compensation parameters stored in the control main board 140 include a first preset resistance value, a second preset resistance value and a preset temperature compensation value. After obtaining the resistance value of the first thermistor 180 and the resistance value of the second thermistor 190, the control motherboard 140 respectively performs a comparison analysis with the first preset resistance value and the second preset resistance value, so as to directly obtain the corresponding preset temperature compensation value. It can be understood that the preset temperature compensation parameter may be that the first thermistor 180 and the second thermistor 190 are respectively provided with corresponding preset temperature compensation values, or that two resistance value parameters of the first thermistor 180 and the second thermistor 190 correspond to one preset temperature compensation value, as long as the corresponding temperature compensation parameter can be obtained according to the obtained resistance value of the first thermistor and the resistance value of the second thermistor to perform the temperature compensation processing. Similar to the above-mentioned second concentration data of the object to be measured obtained by processing according to the first concentration data and the turbidity compensation value, after the temperature compensation value is obtained, the corresponding concentration data of the object to be measured can be obtained by performing analysis calculation according to the second concentration data and the corresponding turbidity compensation value.
In one embodiment, referring to fig. 2, the control main board 140 includes a main board substrate 141, a power processing circuit 142, a light source driving circuit 143, and a signal operational amplifier circuit 144, the light source driving circuit 143 is used for connecting an external power source, the signal operational amplifier circuit 144 and the calculation processing unit 146 are respectively connected with the power source processing circuit 142, the signal operational amplifier circuit 144 is connected with the analog-to-digital conversion circuit 145, the analog-to-digital conversion circuit 145 is connected with the calculation processing unit 146, an optical detector board 130 interface and a light source board 120 interface are arranged on the main board substrate 141, the signal operational amplifier circuit 144 is connected with the optical detector board 130 through the optical detector board 130 interface, and the light source driving circuit 143 is connected with the light source board 120 through the light source board 120 interface. The light detector board 130 collects the light signal of the ultraviolet light or the visible light emitted from the light source board 120, and then converts the light signal into a corresponding electrical signal to transmit to the control main board 140. Controlling the photo-detection of the motherboard 140
Specifically, the main board substrate 141 of the control main board 140 is provided with a power processing circuit 142, the power processing circuit 142 can provide corresponding operating voltages for the signal operational amplifier circuit 144, the analog-to-digital conversion circuit 145 and the calculation processing unit 146, and the light source driving circuit 143 is connected to the light source board 120 to provide corresponding driving currents for the light source board 120. The light detector board 130 collects the light signal of the ultraviolet light or the visible light emitted from the light source board 120, and then converts the light signal into a corresponding electrical signal to transmit to the control main board 140. The electrical signal is transmitted to the signal operational amplifier circuit 144 through the optical detector board 130 interface of the control main board 140, then is amplified, and then is converted into a digital signal by the analog-to-digital conversion circuit 145, and is transmitted to the calculation processing unit 146, and the calculation processing unit 146 performs analysis and calculation to obtain the corresponding transmission light intensity. It should be noted that in one embodiment, the calculation processing Unit 146 is a Micro Controller Unit (MCU), which has the advantages of high operational reliability and easy implementation.
Further, in an embodiment, referring to fig. 3, the power processing circuit 142 includes a low dropout linear regulator 1421 and a power circuit 1422, the low dropout linear regulator 1421 is connected to the power circuit 1422, the power circuit 1422 is connected to the signal amplifier circuit 144, and the low dropout linear regulator 1421 is connected to the calculation processing unit 146.
Specifically, the low dropout linear voltage regulator circuit 1421 and the power supply circuit 1422 can provide stable voltage sources for the signal operational amplifier circuit 144, the analog-to-digital conversion circuit 145, the calculation processing unit 146, and the like on the control motherboard 140, so as to ensure the operational reliability of the whole water quality detection device. It should be noted that in one embodiment, power supply circuit 1422 is a 3.3V power supply circuit.
In one embodiment, referring to fig. 4 or 5, the water quality detecting apparatus further includes a quick connector 150 and a connector 160, the quick connector 150 is connected to the connector 160, the connector 160 is connected to the water containing device 110 to be detected, and the quick connector 150 is used for connecting to an external waterway apparatus. Specifically, through installing connector 160 and quick-operation joint 150 respectively at the both ends that wait to detect water and hold device 110 for can directly, rapidly carry out water quality testing with water quality testing equipment installation on outside waterway equipment when carrying out water quality testing, have the convenient strong advantage of operation. Simultaneously, the water quality testing equipment who makes according to this application still has advantages such as small, light.
Further, in one embodiment, the connector 160 is a food grade plastic connector. Adopt food level plastic connector to realize quick-operation joint 150 and wait to detect that water holds being connected of device 110 to in waiting to detect water introduction and waiting to detect water and hold device 110, have easy operation and easy advantage of realizing. It is understood that in other embodiments, other types of connectors 160 may be used, and the connectors are matched with the quick connector 150 to quickly mount the water quality detection device on the external waterway device.
In an embodiment, referring to fig. 4, the water quality detecting apparatus further includes a protective casing 170, and the water containing device 110 to be detected, the light source board 120, the light detector board 130 and the control main board 140 are all disposed inside the protective casing 170. In this embodiment, will wait to examine that the water that detects holds device 110, light source board 120, optical detector board 130 and control mainboard 140 parcel setting through protective housing 170, guaranteed water quality testing equipment's safety in utilization effectively, can also do water repellent to protective housing 170 simultaneously, further guarantee whole water quality testing equipment's safety in utilization. It should be noted that in one embodiment, the water containing device 110 to be detected is a quartz glass tube. The quartz glass tube has high temperature resistance, corrosion resistance, strong light transmission and thermal stability, so that the water quality detection equipment can detect the water with serious pollution or extremely strong acidity and alkalinity, and has stronger use reliability.
Above-mentioned water quality testing equipment utilizes the ultraviolet ray to wait to detect water and shines, because the organic matter that waits to detect aquatic has certain absorption to the ultraviolet ray for the transmitted light intensity of the ultraviolet ray after waiting to detect water takes place certain change. As long as the transmission light intensity emitted after the ultraviolet light passes through the water to be detected and the corresponding preset water quality parameters are used, the first concentration data of the corresponding object to be detected in the water to be detected can be calculated. Meanwhile, in order to avoid the influence of external environmental factors on the accuracy of the measured first concentration data, the first concentration data is compensated according to preset compensation parameters to obtain final concentration data of the object to be measured, so that the detection of the water quality is realized. The scheme adopts the ultraviolet spectroscopy to realize the detection of water quality, can realize rapid detection, and simultaneously carries out compensation processing on the first concentration data obtained by preliminary detection through the compensation parameters, thereby effectively avoiding the influence of the external environment on the detection result, and compared with the traditional water quality detection method, the method has the advantage of strong detection reliability.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A water quality detecting apparatus, comprising:
a water-to-be-detected holding device for holding water to be detected;
a light source plate for emitting ultraviolet light to the water to be detected;
a light detector plate for receiving the ultraviolet light emitted after passing through the water to be detected;
the control mainboard is used for obtaining the transmission light intensity of ultraviolet light emitted after the ultraviolet light passes through water to be detected, calculating to obtain first concentration data of an object to be detected in the water to be detected according to the transmission light intensity of the ultraviolet light and preset water quality parameters, and performing compensation treatment to obtain the concentration data of the object to be detected according to the first concentration data and preset compensation parameters;
the light source board with the optical detector board set up respectively in wait to examine the relative both sides that the water that detects held the device, the light source board with the optical detector board is connected respectively the control mainboard.
2. The water quality detecting apparatus according to claim 1, wherein the light source plate comprises: light source base plate, ultraviolet emitting diode and visible light emitting diode, ultraviolet emitting diode with visible light emitting diode all set up in the light source base plate, be provided with light source board interface on the light source base plate, ultraviolet emitting diode with visible light emitting diode all passes through light source board interface connection the control mainboard.
3. The water quality detection apparatus of claim 2, wherein the ultraviolet light emitting diode is a deep ultraviolet light emitting diode.
4. The water quality detecting apparatus according to claim 2, wherein the photo detector plate comprises: the ultraviolet detector and the visible light detector are connected with the control mainboard through the optical detector board interface.
5. The water quality detection device of claim 4, further comprising a first thermistor and a second thermistor, wherein the first thermistor is arranged on the light source substrate and is connected with the control main board through the light source board interface; the second thermistor is arranged on the optical detection substrate and is connected with the control main board through the optical detector board interface.
6. The water quality detecting apparatus according to claim 1, wherein the control main board includes: a main board substrate, a power supply processing circuit, a light source driving circuit, a signal operational amplifier circuit, an analog-to-digital conversion circuit and a calculation processing unit, the power supply processing circuit, the light source driving circuit, the signal operational amplifier circuit, the analog-to-digital conversion circuit and the calculation processing unit are all arranged on the mainboard substrate, the light source driving circuit is used for connecting an external power supply, the signal operational amplifier circuit and the calculation processing unit are respectively connected with the power supply processing circuit, the signal operational amplifier circuit is connected with the analog-to-digital conversion circuit, the analog-to-digital conversion circuit is connected with the calculation processing unit, the mainboard base plate is provided with an optical detector board interface and a light source board interface, the signal operational amplifier circuit is connected with the optical detector board through the optical detector board interface, and the light source driving circuit is connected with the light source board through the light source board interface.
7. The water quality detection device of claim 6, wherein the power supply processing circuit comprises a low-voltage-difference linear voltage stabilizing circuit and a power supply circuit, the low-voltage-difference linear voltage stabilizing circuit is connected with the power supply circuit, the power supply circuit is connected with the signal operational amplifier circuit, and the low-voltage-difference linear voltage stabilizing circuit is connected with the calculation processing unit.
8. The water quality detection device of claim 6, wherein the calculation processing unit is a micro control unit.
9. The water quality detection device of claim 1, further comprising a quick connector and a connector, wherein the quick connector is connected with the connector, the connector is connected with the water to be detected containing device, and the quick connector is used for connecting external waterway devices.
10. The water quality detection device of claim 1, further comprising a protective shell, wherein the water containing device to be detected, the light source board, the optical detector board and the control main board are all arranged inside the protective shell.
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| CN201920280160.4U CN209858408U (en) | 2019-03-06 | 2019-03-06 | Water quality detection equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827902A (en) * | 2019-03-06 | 2019-05-31 | 深圳市智水小荷技术有限公司 | Water quality detection equipment and its water quality detection method, device |
| CN117420092A (en) * | 2023-12-19 | 2024-01-19 | 河北德润厚天科技股份有限公司 | Water quality detection method, device and equipment |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827902A (en) * | 2019-03-06 | 2019-05-31 | 深圳市智水小荷技术有限公司 | Water quality detection equipment and its water quality detection method, device |
| CN117420092A (en) * | 2023-12-19 | 2024-01-19 | 河北德润厚天科技股份有限公司 | Water quality detection method, device and equipment |
| CN117420092B (en) * | 2023-12-19 | 2024-03-12 | 河北德润厚天科技股份有限公司 | Water quality detection method, device and equipment |
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