TWI676792B - Wireless, real time laser measurement device for detecting liquid concentration - Google Patents

Abstract

A wireless laser liquid concentration real-time measurement device includes a main control device, a laser light source module, a quartz container, and a light sensor. The main control device includes a wireless transmission module. The laser light source module is electrically connected to the main control device. The quartz container is disposed opposite to the laser light source module. A liquid chamber is formed in the quartz container, and laser light emitted by the laser light source module passes through the liquid chamber. The light sensor is arranged on the quartz container, and is electrically connected to the main control device, and can receive and sense the signal of the laser light emitted from the laser light source module, and the main control device converts the signal into a liquid concentration Measurement information. The laser light of the laser light source module has the advantages of a narrow wavelength spectral width and low divergence, which is conducive to accurate detection of liquid concentration.

Description

Wireless laser liquid concentration instant measurement device

The invention relates to a liquid concentration measuring device, in particular to a wireless laser liquid concentration real-time measuring device, which includes a main control device and a laser light source module. The laser light source module can emit high-intensity laser light having a narrow wavelength spectral width (a width of about 1-2 nm) and low divergence (light concentration). The laser light passes through the quartz container containing the liquid and is detected by the light sensor, and the light intensity measured by the light sensor is converted into liquid concentration measurement information by the main control device. The liquid concentration measurement information is uploaded to a cloud server in real time through a wireless transmission module, so that relevant personnel can monitor the liquid concentration measurement information in real time through the cloud server.

Conventional light sources used in currently available liquid concentration measurement and analysis devices are mainly deuterium lamps, halogen lamps, xenon lamps, or light-emitting diodes (LEDs). Light emitted through the light source penetrates into the liquid containing the specific liquid. The transparent container allows light to be received by a light sensor after passing through the container. The ratio of the light intensity before and after is calculated based on the preset light intensity when the light is emitted and the light intensity detected by the light sensor for further calculation. Out of liquid concentration. The above-mentioned light sources other than the LED light source have a large wavelength spectral width, and need to intercept a single-wavelength light source through various optical gratings and optical lenses, and these light sources are too large to facilitate the miniaturization of the liquid concentration measurement and analysis device. Although LED light sources have the advantages of small size and a single wavelength of emitted light, etc., And it has the shortcomings of large divergence angle, low light intensity, low output power, and lack of energy concentration. When the detected liquid concentration is slightly higher, the light of the LED light source is easily absorbed by the liquid and cannot pass through the liquid container. The light intensity detected by the light sensor or after passing through the liquid container is lower than the lower limit of the intensity that can be detected by the light sensor, so its concentration range for measuring liquid is extremely limited.

In addition, the light source of the liquid concentration measurement and analysis device has a life of only 4000-6000 hours under normal use, which is not ideal. Frequent replacement of light sources will increase the difficulty and cost of maintenance.

In addition, traditional liquid concentration measurement and analysis devices need to record liquid concentration data in the working area where the liquid is located by the staff, and relevant personnel cannot instantly understand and monitor the liquid concentration data in a remote manner. When the liquid concentration in the working area changes abnormally, the relevant personnel will not be able to make any emergency treatment immediately.

The present inventor has the disadvantages that the light source of the existing liquid concentration measurement and analysis device is not ideal to detect the liquid concentration, and the liquid concentration data of the existing liquid concentration measurement and analysis device cannot be obtained and utilized in real time. And then created a wireless laser liquid concentration real-time measurement device

The main purpose of the present invention is to provide a wireless laser liquid concentration real-time measurement device, which includes a main control device and a laser light source module. The laser light source module can emit a narrow wavelength spectral width (about 1-2nm). Width) and low-divergence (light-concentration) high-intensity laser light, so that the laser light is detected by a light sensor after passing through a quartz container containing a liquid, and measured by the light sensor After the light intensity is converted into liquid concentration measurement information by the main control device, the liquid concentration measurement information is further uploaded to a cloud server through a wireless transmission module in real time. So that relevant personnel can monitor the liquid concentration measurement information in real time through the cloud server.

In order to achieve the above object, the wireless laser liquid concentration real-time measurement device of the present invention includes: a main control device including a wireless transmission module, the wireless transmission module is disposed on the main control device, and can measure the liquid concentration The measurement information is sent wirelessly; a laser light source module is electrically connected to the main control device and can emit a laser light; a quartz container is arranged opposite to the laser light source module and is formed in the quartz container There is a liquid chamber, in which the laser light emitted by the laser light source module passes through the liquid chamber of the quartz container; and a light sensor is disposed on the quartz container and is electrically connected to the main control device. Receive and sense the optical signal from the laser light emitted by the laser light source module, convert the optical signal into a voltage or current signal and return the voltage or current signal to the main control device, wherein the main control device The received voltage or current signal is processed and converted into liquid concentration measurement information.

In an embodiment of the present invention, the wireless laser liquid concentration real-time measurement device further includes a water tank and a pump, and the water tank and the pump are connected to the quartz container through a plurality of pipelines of a circulation pipeline, so that The detected liquid circulates between the quartz container, the water tank and the pump.

In an embodiment of the present invention, the pump is a peristaltic pump. An inlet port connected to the water tank is provided on the pump, and an outlet port connected to the quartz container is provided on the pump.

In an embodiment of the present invention, the main control device, the laser light source module, and the stone The British container and the light sensor are disposed in a device casing, and the laser light source module is detachable and can be replaced from the device casing.

In an embodiment of the present invention, the laser light source module has a laser diode. The laser diode includes aluminum gallium nitride (AlGaN), indium gallium arsenide (InGaAsP), and gallium arsenide ( GaAs), aluminum gallium arsenide (AlGaAs), aluminum gallium indium phosphide (AlGaInP), indium gallium nitride (InGaN), or zinc oxide (ZnO).

In an embodiment of the present invention, the laser light source module is a helium-neon laser light source module, an argon ion laser light source module, a krypton ion laser light source module, or a nitrogen laser light source module.

In an embodiment of the present invention, the wavelength of the laser light emitted by the laser light source module is in the visible wavelength range of 400-700 nm.

In an embodiment of the present invention, the wavelength of the laser light emitted by the laser light source module is in a non-visible light range other than 400-700 nm.

In an embodiment of the present invention, the main control device is a main control circuit board and includes a microprocessor, a memory, and a management program stored in the memory. The management program can pass through the wireless transmission module. Send the liquid concentration measurement information to the outside.

In an embodiment of the present invention, the wireless laser liquid concentration real-time measurement device further includes a temperature sensor, and the temperature sensor is electrically connected to the main control device to convert the detected temperature signal into a voltage or The current signal is transmitted to the main control device, and the main control device processes the received voltage or current signal and converts it into temperature information.

In an embodiment of the invention, the wireless laser liquid concentration real-time measurement device further includes a display device, and the display device can display the liquid concentration measurement information.

In an embodiment of the invention, the display device is a touch screen.

In an embodiment of the present invention, the wireless laser liquid concentration real-time measurement device further includes a cloud server, and the cloud server and the wireless transmission module are wirelessly connected to receive the liquid concentration from the main control device. Measurement information.

In an embodiment of the present invention, the wireless laser liquid concentration real-time measurement device further includes a cloud server, and the cloud server and the wireless transmission module are wirelessly connected to receive the liquid concentration from the main control device. Measurement information and temperature information.

In an embodiment of the present invention, the wireless transmission module is a wireless fidelity (Wi-Fi), and the wireless transmission module can transmit or receive Wi-Fi wireless signals.

With the above technical means, the wireless laser liquid concentration real-time measuring device of the present invention has the following advantages:

1. The wireless laser liquid concentration real-time measurement device uses a laser light source module. The laser light emitted by it is highly stable due to the extremely narrow wavelength spectrum width. The divergence angle of the laser light is small and the output power is high. The light source's wavelength spectrum width is too large, causing a misjudgment of the light sensor or insufficient light intensity to be detected by the light sensor, thereby greatly improving the accuracy of the wireless laser liquid concentration real-time measurement device.

2. The wireless transmission module can upload the data of liquid concentration measurement information in real time, and upload the data to the cloud server for relevant personnel to monitor liquid concentration measurement information such as liquid concentration in real time through a remote connection. The wireless transmission module can greatly improve the accuracy of measurement data and reduce or avoid manual recording.

3. The laser light source module of the present invention can use a single laser diode as the laser source, so the laser light source module is larger in volume than a traditional deuterium lamp, halogen lamp, xenon lamp or multiple The light source composed of the light emitting diode is small, which is beneficial to the reduction of the wireless laser liquid concentration instant measurement device.

4. The laser light source module can be designed as a detachable module, so different laser light source modules with different wavelengths can be replaced according to the detection of specific absorption bands of different liquids. For example, different laser light source modules can be designed as In the visible light range with a wavelength of 400-700nm and in the non-visible light wavelength range, for example, an ultraviolet light source module with a wavelength of 200nm, a blue light source module with a wavelength of 400nm, and a red light source module with a wavelength of 700nm And an infrared laser light module with a wavelength of 1000 nm, and then a specific laser light source module is replaced according to the type or concentration range of the liquid to be detected.

10‧‧‧Master Control Device

100‧‧‧device housing

11‧‧‧Microprocessor

13‧‧‧Memory

17‧‧‧Wireless Transmission Module

18‧‧‧ Management Program

20‧‧‧laser light source module

200‧‧‧laser light

30‧‧‧Quartz Container

35‧‧‧Circulation pipeline

350‧‧‧ Pipeline

40‧‧‧light sensor

45‧‧‧Temperature sensor

50‧‧‧ Cloud Server

60‧‧‧Display device

70‧‧‧ water tank

81‧‧‧Inlet

83‧‧‧ Outlet

80‧‧‧Pump

FIG. 1 is a schematic diagram of a wireless laser liquid concentration instant measurement device according to the present invention.

FIG. 2 is a block diagram of a main control device of a wireless laser liquid concentration real-time measurement device according to the present invention.

1 and FIG. 2, the wireless laser liquid concentration real-time measurement device of the present invention includes: a main control device 10, a laser light source module 20, a quartz container 30, a light sensor 40, and a temperature sensor. A measuring device 45, a cloud server 50, a display device 60, a water tank 70, and a pump 80.

The main control device 10 includes a wireless transmission module 17. The wireless transmission module 17 is disposed on the main control device 10 and can measure liquid concentration measurement information (including liquid concentration information, liquid composition information, etc.) to Send wirelessly. In a preferred embodiment, the main control device 10 is a main control circuit board and includes a microprocessor, a memory, and a memory stored in the memory. The management program can send the liquid concentration measurement information to the outside through the wireless transmission module 17.

The laser light source module 20 is electrically connected to the main control device 10 and can emit a laser light 200. In a preferred embodiment, the laser light source module 20 has a laser diode. The laser diode includes aluminum gallium nitride (AlGaN), indium gallium arsenide (InGaAsP), and gallium arsenide ( GaAs), aluminum gallium arsenide (AlGaAs), aluminum gallium indium phosphide (AlGaInP), indium gallium nitride (InGaN), or zinc oxide (ZnO). Alternatively, in a preferred embodiment, the laser light source module 20 is a helium-neon laser light source module, an argon ion laser light source module, a krypton ion laser light source module 20, or a nitrogen laser light source module. . In a preferred embodiment, the wavelength of the laser light 200 emitted by the laser light source module 20 is in the visible wavelength range of 400-700 nm. Alternatively, in a preferred embodiment, the wavelength of the laser light 200 emitted by the laser light source module 20 is in a non-visible light range other than 400-700 nm. Generally, the wavelength spectral width of the laser light 200 emitted by the laser light source module 20 is less than 1-2 nm, and its divergence is extremely low. For example, the diameter of the laser beam 200 at the laser exit is 1 mm. , When the distance is 1 km, the diameter is only about 10cm or less.

The quartz container 30 is opposite to the laser light source module 20. A liquid chamber is formed in the quartz container 30, and the laser light 200 emitted by the laser light source module 20 passes through the liquid of the quartz container 30. Chamber.

The light sensor 40 is disposed on the quartz container 30 and is electrically connected to the main control device 10. The light sensor 40 can receive and sense a light signal from the laser light 200 emitted by the laser light source module 20 and convert the light signal. Is the voltage or current signal and returns the voltage or current signal to the main control device 10, wherein the main control device 10 processes the received voltage or current signal and converts it into liquid concentration measurement information.

The temperature sensor 45 is electrically connected to the main control device 10, converts the detected temperature signal into a voltage or current signal, and transmits the voltage or current signal back to the main control device 10. The main control device 10 will receive The received voltage or current signal is processed and converted into temperature information, and the temperature information can be transmitted to the outside through the wireless transmission module 17. In addition, the temperature sensor 45 can be installed on the laser light source module 20 or the quartz container 30 to measure the temperature there. For example, when installed on the laser light source module 20, it can detect It is tested whether the laser light source module 20 is abnormally overheated and needs to be powered off for protection.

The cloud server 50 is wirelessly connected to the wireless transmission module 17 and can receive liquid concentration measurement information and temperature information from the main control device 10.

The display device 60 can display the liquid concentration measurement information, and the display device 60 can be a touch screen for the viewer to switch the desired information, such as switching liquid concentration information or liquid temperature measurement information.

The water tank 70 and the pump 80 are connected to the quartz container 30 through a plurality of pipelines 350 of a circulation pipeline 35, so that the liquid to be detected circulates between the quartz container 30, the water tank 70 and the pump 80. . In a preferred embodiment, the pump 80 may be a peristaltic pump 80. An inlet port 81 connected to the water tank 70 is provided on the pump 80, and a quartz container 30 is connected to the pump 80.出水 港 83。 The water port 83.

In addition, in a preferred embodiment, the main control device 10, the laser light source module 20, the quartz container 30, the light sensor 40, and the temperature sensor 45 are installed in a device housing 100 together. The laser light source module 20 is detachable and can be replaced from the device casing 100.

In a preferred embodiment, the wireless transmission module 17 is a wireless fidelity (Wi-Fi) wireless transmission module 17 and can transmit or receive Wi-Fi wireless signals.

With the above technical means, the wireless laser liquid concentration real-time measuring device of the present invention has the following advantages:

1. The wireless laser liquid concentration real-time measurement device uses the laser light source module 20, and the laser light 200 emitted by it has high stability due to the extremely narrow wavelength spectrum width, and the laser light 200 has a small divergence angle and high output power, which can Avoiding the problem of misjudgment of the light sensor 40 or insufficient light intensity that cannot be sensed by the light sensor 40 due to the excessively large wavelength spectrum width of the traditional light source, which can greatly improve the wireless laser liquid concentration real-time measurement device. Precision.

2. The wireless transmission module 17 can upload data of liquid concentration measurement information in real time, and upload the data to the cloud server 50, so that relevant personnel can monitor liquid concentration measurement information such as liquid concentration in real time through a remote connection. Therefore, the wireless transmission module 17 can greatly improve the accuracy of measurement data and reduce or avoid manual recording.

3. The laser light source module 20 of the present invention can use a single laser diode as a laser source, so the laser light source module 20 is lighter in volume than a conventional deuterium lamp, a halogen lamp, a xenon lamp, or multiple lights. The light source composed of the diode is small, which is beneficial to the reduction of the wireless laser liquid concentration instant measurement device.

4. The laser light source module 20 can be designed as a detachable module, so the laser light source module 20 with different wavelengths can be replaced according to the detection of specific absorption bands of different liquids. For example, different laser light source modules can be used. 20 is designed to be in the visible light range with a wavelength of 400-700nm and in the non-visible light wavelength range. For example, it is designed as a UV laser light source module 20 with a wavelength of 200nm, a blue laser light source module 20 with a wavelength of 400nm, and a red light with a wavelength of 700nm. The laser light source module and the infrared laser light 200 module with a wavelength of 1000 nm, and then the specific laser light source module 20 is replaced according to the type or concentration range of the liquid to be detected.

Claims (14)

A wireless laser liquid concentration real-time measurement device includes: a main control device including a wireless transmission module, the wireless transmission module is disposed on the main control device, and can wirelessly measure liquid concentration measurement information Sent to the outside; a laser light source module is electrically connected to the main control device and can emit a laser light; a quartz container is disposed opposite the laser light source module, and a liquid chamber is formed in the quartz container, The laser light emitted by the laser light source module passes through the liquid chamber of the quartz container; and a light sensor is disposed on the quartz container and is electrically connected to the main control device, which can receive and sense signals from The optical signal of the laser light emitted by the laser light source module, converts the optical signal into a voltage or current signal and returns the voltage or current signal to the main control device, where the main control device will receive the The voltage or current signal is processed and converted into liquid concentration measurement information; wherein the main control device, the laser light source module, the quartz container, and the light sensor are disposed in a device housing, and the lightning The light source module may be detachable from the apparatus housing is replaced. The wireless laser liquid concentration real-time measurement device according to claim 1, wherein the wireless laser liquid concentration real-time measurement device further includes a water tank and a pump, and the water tank and the pump pass through a circulation pipeline. A pipeline is connected to the quartz container, so that the liquid to be detected circulates between the quartz container, the water tank and the pump. The wireless laser liquid concentration real-time measurement device according to claim 2, wherein the pump is a peristaltic pump, an inlet port connected to the water tank is provided on the pump, and a connection is provided on the pump The water outlet of the quartz container. The wireless laser liquid concentration real-time measurement device according to claim 1, wherein the laser light source module has a laser diode, and the laser diode is made of aluminum gallium nitride (AlGaN), phosphorous arsenide Made of indium gallium (InGaAsP), gallium arsenide (GaAs), aluminum gallium arsenide (AlGaAs), aluminum gallium indium phosphide (AlGaInP), indium gallium nitride (InGaN), or zinc oxide (ZnO). The wireless laser liquid concentration real-time measurement device according to claim 1, wherein the laser light source module is a helium-neon laser light source module, an argon ion laser light source module, a krypton ion laser light source module, or Nitrogen laser light source module. The wireless laser liquid concentration real-time measurement device according to claim 1, wherein the wavelength of the laser light emitted by the laser light source module is between the visible wavelength light range of 400-700 nm. The wireless laser liquid concentration real-time measurement device according to claim 1, wherein the wavelength of the laser light emitted by the laser light source module is in a non-visible light range other than 400-700 nm. The wireless laser liquid concentration real-time measurement device according to claim 1, wherein the main control device is a main control circuit board and includes a microprocessor, a memory, and a management program stored in the memory, the The management program can send the liquid concentration measurement information to the outside through the wireless transmission module. The wireless laser liquid concentration real-time measurement device according to claim 1, wherein the wireless laser liquid concentration real-time measurement device further includes a temperature sensor, the temperature sensor is electrically connected to the main control device, and The detected temperature signal is converted into a voltage or current signal and the voltage or current signal is transmitted back to the main control device, wherein the main control device processes the received voltage or current signal and converts it into temperature information. The wireless laser liquid concentration real-time measurement device according to claim 1, wherein the wireless laser liquid concentration real-time measurement device further includes a display device, and the display device can display the liquid concentration measurement information. The wireless laser liquid concentration real-time measurement device according to claim 10, wherein the display device is a touch screen. The wireless laser liquid concentration real-time measurement device according to claim 1, wherein the wireless laser liquid concentration real-time measurement device further includes a cloud server, and the cloud server and the wireless transmission module are wirelessly connected, It can receive liquid concentration measurement information from the main control device. The wireless laser liquid concentration real-time measurement device according to claim 9, wherein the wireless laser liquid concentration real-time measurement device further includes a cloud server, and the cloud server and the wireless transmission module are wirelessly connected, It can receive liquid concentration measurement information and temperature information from the main control device. The wireless laser liquid concentration real-time measurement device according to claim 1, wherein the wireless transmission module is a wireless fidelity (Wi-Fi) wireless transmission module and can transmit or receive Wi-Fi wireless Signal.