CN210347450U - Ultraviolet detection device for remote passive detection - Google Patents
Ultraviolet detection device for remote passive detection Download PDFInfo
- Publication number
- CN210347450U CN210347450U CN201921342089.4U CN201921342089U CN210347450U CN 210347450 U CN210347450 U CN 210347450U CN 201921342089 U CN201921342089 U CN 201921342089U CN 210347450 U CN210347450 U CN 210347450U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- converter
- sensor
- light
- ultraviolet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model provides a remote passive detection's ultraviolet detection device, relates to a remote passive detection's ultraviolet detection device, solves current ultraviolet detection device and can cause destruction at low temperature and high temperature state to the light modulation and demodulation circuit, leads to the service condition of sensor probe to receive the problem of restriction, the utility model discloses pass through optical fiber transmission respectively with measured signal and return signal, optical modem passes through optical fiber transmission to the sensor with measured signal in, and adopts fluorescent substance at the optic fibre end, converts the light of optical fiber transmission into the light of ultraviolet band and measures the material to be measured. Ultraviolet light is absorbed after passing through a measured substance, the light power is changed, the ultraviolet light irradiates the end face of an optical fiber of a return signal after passing through the measured substance, the end face is provided with a fluorescent substance which converts the ultraviolet light into light which can be transmitted by the optical fiber, the return signal is converted into the light which is transmitted by the optical fiber and is transmitted to an optical modem, and the return signal is analyzed into measurement data through the modem.
Description
Technical Field
The utility model relates to an ultraviolet detection device of remote passive detection.
Background
The traditional ultraviolet detection device mainly comprises a main control part, a light emitting part, a receiving part and a light modulation and demodulation part. Since a large portion of the frequency of the ultraviolet light cannot be transmitted through the optical fiber, part of the light modulation and demodulation circuit of the conventional ultraviolet detection apparatus must be installed in the sensor probe. In this case, the environmental adaptability of the sensor probe is poor due to the limitation of the optical modulation and demodulation circuit part, and the sensor probe can only work at normal temperature, and the use condition of the sensor probe is limited due to the damage of the optical modulation and demodulation circuit caused by the low-temperature and high-temperature states, so that the sensor probe cannot be used in many application occasions, such as environments of strong magnetic fields, strong electric fields, high temperature, low temperature and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current ultraviolet detection device and can cause destruction at low temperature and high temperature state to the light modulation demodulation circuit, lead to sensor probe's service condition to receive the problem of restriction, provide a remote passive detection's ultraviolet detection device.
An ultraviolet detection device for remote passive detection comprises a host, a transmission optical fiber and a sensor; the host comprises a main controller and an optical modem; at least one group of converters is arranged on one side of the sensor, each group of converters comprises two converters, and each converter comprises a converter shell, a fluorescent chamber, a focusing lens and a fiber collimator;
one end of the transmission optical fiber is connected with the optical modem, and the other end of the transmission optical fiber is connected with the sensor through each group of converters;
the main controller controls the optical modem to send optical signals with different wavelengths, and the optical signals with different wavelengths are transmitted to each group of converters through the transmission optical fiber; after passing through the fluorescent chamber of the first converter in each group of converters, exciting a fluorescent substance A in the fluorescent chamber, transmitting an optical signal into the optical fiber collimator after passing through the focusing lens of the first converter, transmitting a parallel light beam which is collimated by the optical fiber collimator into the sensor through the emergent end of the first converter, after being reflected by the inner wall of the sensor, entering the fluorescent chamber through an optical channel of the second converter, exciting the optical signal by a fluorescent substance B in the fluorescent chamber, and returning the excited optical signal to the optical modem through the transmission optical fiber after passing through the focusing lens of the second converter and the optical fiber collimator;
the optical modem analyzes the returned signal into a digital signal and transmits the digital signal to the main controller, and the main controller divides the frequency and the amplitude of the digital signal to obtain detection data.
The utility model has the advantages that:
ultraviolet detection device adopt optical fiber transmission's mode, pass through optical fiber transmission respectively with measuring signal and return signal, make measuring signal and return signal mutual noninterference. The light modulation and demodulation part transmits the measurement signal to the sensor probe through the optical fiber, and the fluorescent substance is adopted at the tail end of the optical fiber, so that the light transmitted by the optical fiber is converted into light in an ultraviolet band to measure the substance to be measured. Ultraviolet light can be absorbed after passing through a measured substance, the light power can be changed at the moment, the ultraviolet light irradiates the end face of an optical fiber of a return signal after passing through the measured substance, the end face is provided with a fluorescent substance which can convert the ultraviolet light into light which can be transmitted by the optical fiber, the return signal is converted into the light which can be transmitted by the optical fiber and is transmitted to a light modulation and demodulation part, and the return signal is analyzed into measurement data through the modulation and demodulation part. The concrete advantages are that:
the sensor has no electronic parts inside, can bear high temperature, and can bear environments such as a strong magnetic field and the like.
And secondly, the sensor is separated from the host part, so that remote measurement can be performed, and the toxic damage of the sample is avoided.
And thirdly, the sensor and the host part can be detached, so that later maintenance and part replacement are facilitated.
And fourthly, the probe can be sent to the sample position to measure the sample without sampling, so that the sampling work is reduced.
Drawings
Fig. 1 is a structural diagram of an ultraviolet detection device for remote passive detection according to the present invention;
fig. 2 is a structural diagram of a first converter in the remote passive detection ultraviolet detection device according to the present invention;
fig. 3 is a structural diagram of a second converter in the ultraviolet detection device for remote passive detection according to the present invention;
fig. 4 is a schematic diagram illustrating a correspondence relationship between a converter and an internal optical path of a sensor in the remote passive detection ultraviolet detection apparatus of the present invention;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a view A-A of FIG. 4;
fig. 7 is a structural diagram of a host in the ultraviolet detection device for remote passive detection according to the present invention. Detailed Description
First embodiment, the present embodiment is described with reference to fig. 1 to 7, and an ultraviolet detection apparatus for remote passive detection includes a host 1, a transmission fiber 2, and a sensor 3; the host 1 comprises a main controller, a display, a power supply and an optical modem; the main controller controls other parts to work, and the power supply is responsible for supplying power.
At least one group of converters is arranged on one side of the sensor 3, each group of converters comprises two converters, and each converter comprises a converter shell 4, a fluorescent chamber 5, a focusing lens 6 and a fiber collimator 7; the phosphor chamber 5, focusing lens 6 and fiber collimator 7 are disposed within the converter housing 4.
One end of the transmission optical fiber 2 is connected with the optical modem, and the other end of the transmission optical fiber is connected with the sensor 3 through each group of converters;
the main controller controls the optical modem to send optical signals with different wavelengths, and the optical signals with different wavelengths are transmitted to each group of converters through the transmission optical fiber; after passing through the fluorescent chamber 5 of the first converter in each group of converters, the fluorescent substance A in the fluorescent chamber 5 is excited, the emitted light signal enters the optical fiber collimator 7 after passing through the focusing lens 6 of the first converter, the parallel light beam emitted after being collimated by the optical fiber collimator 7 enters the sensor 3 through the emitting end of the first converter, after being reflected by the inner wall of the sensor 3, enters the fluorescent chamber 5 through the light channel of the second converter, and is excited by the fluorescent substance B in the fluorescent chamber 5, and the excited light signal returns to the optical modem through the transmission optical fiber 3 after passing through the focusing lens 6 of the second converter and the optical fiber collimator 7; the optical modem analyzes the returned signal into a digital signal and transmits the digital signal to the main controller, and the main controller divides the frequency and the amplitude of the digital signal to obtain detection data.
In this embodiment, the two ends of the transmission fiber 2 are plug-type, one end is connected to the sensor 3, and the other end is connected to the host 1. The transmission optical fiber is internally provided with a steel wire framework, and is externally provided with a wire coating and a rubber coating, so that the strength and the flexibility are ensured.
Referring to fig. 2 and 3, the present embodiment is described, in which one end of the converter 1 is an optical fiber plug, which is connected to a transmission optical fiber, and the other end is a light emitting end, which is located inside the sensor after installation. For example, light having a wavelength of n1 and n1 transmitted through the transmission fiber passes through the fluorescent chamber 5 of the converter 1, and excites the fluorescent substance a in the fluorescent chamber 5 to emit light having a wavelength of n2, whereas light having a wavelength of n2 can measure a certain substance but cannot be transmitted through the fiber. Light with a wavelength of n2 enters the fiber collimator 7 of the converter 1 after passing through the focusing lens 6 of the converter 1, and the collimator of the converter 1 converts light with a wavelength of n2 into a bundle of parallel light with dense energy, enters the sensor 3 through the exit end, and enters the converter 2 after being reflected inside the sensor 3. One end of the converter 2 is an incident end and is positioned in the sensor, and the other end of the converter is an optical fiber plug and is connected with a transmission optical fiber. The light with the wavelength of n2 enters the fluorescent chamber 5 of the converter 2 through the light channel at the incident end, the fluorescent substance B in the fluorescent chamber 5 is excited to emit light with the wavelength of n1, and the light with the wavelength of n1 passes through the focusing lens 6 of the converter 2 and then enters the transmission fiber 2 through the fiber plug of the converter 2. This is a complete sensor operation.
In this embodiment, the wavelength range of n1 is 850nm to 1550 nm. The wavelength range of n2 is 120 nm-380 nm. The fluorescent substance A is an up-conversion luminescent material, the main material is NaGdF4, and the activator is Tm. The host material of the fluorescent substance B is BaAl2O4, and the activator is Er.
During normal work, the sampling is started through an operation unit (such as a button and the like) in the host 1, the main controller controls the optical modem to emit light with the wavelength of n1, the light is transmitted to the sensor through the transmission optical fiber, the light returns to the optical modem after a completed working process of the sensor, the optical modem analyzes a returned signal into a digital signal and transmits the digital signal to the main controller, and the main controller analyzes effective information (frequency and amplitude) in the signal to obtain a measurement result and displays the measurement result through the display.
In the present embodiment, the material of the sensor 3 is fiber reinforced plastic, which is corrosion resistant, and the sensor is a hollow rectangular barrel-shaped frame, and the inner wall of the hollow rectangular barrel-shaped frame is coated with a reflective film and then attached with a protective layer (acrylic plastic) which can reflect light waves in the ultraviolet band. The side of the rectangular framework is provided with a mounting position of the converter, the converters are arranged in pairs and respectively are a converter 1 and a converter 2, and light emitted by the converter 1 enters the converter 2 after being reflected by the inner wall of the rectangular framework. Through multiple reflections, the optical path of light contacting with the measured object is increased, the detection sensitivity can be improved, and the size of the sensor is reduced.
In fig. 4, the converter position 1 has two converter mounting positions, the converter 1 and the converter 2 are respectively mounted, the converter and the framework form a certain angle (1 degree to 1.5 degrees), so that a light path is ensured to be emitted from the converter 1, and the light path enters the converter 2 after being reflected for multiple times. One material can be monitored by analysing the returned signal, the other transducers being position transducers 1 and 2 (each transducer being of the same configuration) so that different materials can be monitored and the respective paths are in different planes, without cross-over and interference, and can be measured simultaneously.
Claims (7)
1. An ultraviolet detection device for remote passive detection comprises a host (1), a transmission optical fiber (2) and a sensor (3); the host (1) comprises a main controller and an optical modem; the method is characterized in that:
at least one group of converters are arranged on one side of the sensor (3), each group of converters comprises two converters, and each converter comprises a converter shell (4), a fluorescent chamber (5), a focusing lens (6) and a fiber collimator (7);
one end of the transmission optical fiber (2) is connected with the optical modem, and the other end of the transmission optical fiber is connected with the sensor (3) through each group of converters;
the main controller controls the optical modem to send optical signals with different wavelengths, and the optical signals with different wavelengths are transmitted to each group of converters through the transmission optical fiber; after passing through a fluorescent chamber (5) of a first converter in each group of converters, a fluorescent substance A in the fluorescent chamber (5) is excited, an emitted light signal enters an optical fiber collimator (7) after passing through a focusing lens (6) of the first converter, a parallel light beam emitted after being collimated by the optical fiber collimator (7) enters a sensor (3) through an emitting end of the first converter, enters the fluorescent chamber (5) through an optical channel of a second converter after being reflected by the inner wall of the sensor (3), is excited by a fluorescent substance B in the fluorescent chamber (5), and returns to an optical modem through a transmission optical fiber (2) after passing through the focusing lens (6) of the second converter and the optical fiber collimator (7);
the optical modem analyzes the returned signal into a digital signal and transmits the digital signal to the main controller, and the main controller divides the frequency and the amplitude of the digital signal to obtain detection data.
2. A remote passive ultraviolet sensing apparatus as claimed in claim 1, wherein: the sensor (3) is a hollow rectangular barreled framework, and the first converter and the second converter are at a certain angle with the rectangular barreled framework, so that optical signals reflected inside the sensor enter the second converter.
3. A remote passive ultraviolet sensing apparatus as claimed in claim 2, wherein: the angle ranges between 1 ° and 1.5 °.
4. A remote passive ultraviolet sensing apparatus as claimed in claim 1, wherein: the two ends of the transmission optical fiber (2) are in a plug type, a steel wire framework is arranged inside the transmission optical fiber (2), and a wire wrapping and a rubber wrapping are arranged outside the transmission optical fiber.
5. A remote passive ultraviolet sensing apparatus as claimed in claim 1, wherein: the fluorescent substance A is an up-conversion luminescent material, the main material is NaGdF4, the activator is Tm, the main material of the fluorescent substance B is BaAl2O4, and the activator is Er.
6. A remote passive detection uv detection device according to claim 1, wherein; the inner wall of the sensor (3) is sequentially plated with a reflecting film and a protective layer, and the protective layer is made of acrylic plastics.
7. A remote passive detection uv detection device according to claim 1, wherein; the host 1 further comprises a power supply and a display; the power supply and the display are connected with a main controller, and the display is used for displaying the measurement data obtained by the main controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921342089.4U CN210347450U (en) | 2019-08-19 | 2019-08-19 | Ultraviolet detection device for remote passive detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921342089.4U CN210347450U (en) | 2019-08-19 | 2019-08-19 | Ultraviolet detection device for remote passive detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210347450U true CN210347450U (en) | 2020-04-17 |
Family
ID=70175419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921342089.4U Active CN210347450U (en) | 2019-08-19 | 2019-08-19 | Ultraviolet detection device for remote passive detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210347450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346318A (en) * | 2019-08-19 | 2019-10-18 | 大连世有电力科技有限公司 | A kind of ultraviolet detector of long distance passive detection |
-
2019
- 2019-08-19 CN CN201921342089.4U patent/CN210347450U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346318A (en) * | 2019-08-19 | 2019-10-18 | 大连世有电力科技有限公司 | A kind of ultraviolet detector of long distance passive detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102301206B (en) | Fiber optic measuring apparatus | |
| CN102261966B (en) | Fluorescent optical fiber temperature measurement optical system | |
| CN102735633B (en) | Light path online calibration type cavity enhanced atmosphere trace gas detection system | |
| CN210347450U (en) | Ultraviolet detection device for remote passive detection | |
| CN207232005U (en) | Multiplexing fiber-optic gas sensing system based on weak optical fiber Bragg grating and optical time domain reflectometer | |
| CN210427702U (en) | Partial discharge ultrahigh frequency, ultrasonic wave and optical pulse combined detection system for GIS | |
| CN205081787U (en) | Light module parameter testing arrangement | |
| CN201373781Y (en) | Semiconductor absorption optical fiber temperature detection device | |
| CN117665669A (en) | Magnetic field measuring device based on diamond nitrogen vacancy color center | |
| CN102798639A (en) | Instrument for field measurement of microwave absorption coating reflectivity performance | |
| CN109188219A (en) | Built-in GIS shelf depreciation ultrasonic wave and light pulse combined detection system and method | |
| CN108871697A (en) | A kind of gas leakage detection device of all optical fibre structure | |
| CN110346318B (en) | Ultraviolet detection device for remote passive detection | |
| CN203785642U (en) | All-fiber bending sensor based on peanut-shaped structure | |
| CN109547097A (en) | Optical signal transmitting device capable of monitoring light intensity | |
| CN213688666U (en) | Light sensing device capable of detecting tiny light spots and little influenced by incident light direction | |
| CN108318135A (en) | A kind of optical-fiber laser on-line monitoring system | |
| CN104237179A (en) | Optical fiber sensing equipment by fluorescence method | |
| CN203287318U (en) | Optical fiber sensing device of fluorescence method | |
| CN114137446A (en) | Temperature sensitive magnetic field eliminating sensing device of FBG (fiber Bragg Grating) cascade optical fiber composite structure | |
| CN209689741U (en) | A kind of partition type optical fiber vibration measuring system | |
| CN107478577A (en) | Multiplexing fiber-optic gas sensing system based on weak optical fiber Bragg grating and optical time domain reflectometer | |
| CN208091381U (en) | A kind of light path optical-fibre precise displacement sensor altogether | |
| CN107607889B (en) | Li-Fi-based all-optical transmission magnetic field detection system | |
| CN207691809U (en) | Optical signal transmitting device capable of monitoring light intensity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |