CN210862839U - Material height monitoring system - Google Patents
Material height monitoring system Download PDFInfo
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- CN210862839U CN210862839U CN201921858497.5U CN201921858497U CN210862839U CN 210862839 U CN210862839 U CN 210862839U CN 201921858497 U CN201921858497 U CN 201921858497U CN 210862839 U CN210862839 U CN 210862839U
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- liquid level
- servo motor
- detector
- level height
- current liquid
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Abstract
For solving current radioactivity charge level indicator structure is more complicated, the higher technical problem of cost, the utility model provides a material height monitoring system, special hardware architecture and mobile control platform have been designed, adopt two sets of synchronous motion's rail block mechanism or screw nut mechanism, realized neutron source and detector synchronous movement and tracked the material charge level, utilize current calculation method behind the neutron number to the detector, can realize the measurement of material charge level height promptly, only need be equipped with the container of measured material when measuring and fix on measuring platform can, do not relate to the complicated installation positioning problem between monitored control system and the container.
Description
Technical Field
The utility model relates to a material height monitoring system, the high control of the material that mainly used chemistry field relates.
Background
The traditional material height measuring device has a contact type and a non-contact type according to a measuring mode; a contact type material height measuring device, such as a contact type liquid level meter, has a measuring accuracy which is easily affected by the environment (such as material dust and material temperature), and is not suitable for use because the material to be measured is a material with strong corrosiveness; the non-contact material height measuring device usually adopts modes such as an ultrasonic probe, a radar probe, a capacitance probe and the like to realize measurement, can measure the heights of corrosive, flammable and explosive materials, but also has the defect that the measurement precision is easily influenced by the environment (such as electromagnetic interference, material dust and material temperature), and when in measurement, the probe still needs to be arranged in a container, so that the probe is easy to stick materials when in improper operation, and the precision of the instrument is influenced.
The radioactive charge level indicator is a non-contact measuring device, the measuring precision is not influenced by material dust and material temperature, the technical problem can be well solved, and the measuring principle is as follows: the intensity attenuation rule of the ray passing through the material is related to the path of the ray passing through the material, and for a certain geometric position, the path is in direct proportion to the material level, so that the measurement of the material level of the material can be realized based on the intensity attenuation rule of the ray passing through the material.
However, the conventional radioactive level gauge has a relatively complicated structure and a relatively high cost.
SUMMERY OF THE UTILITY MODEL
For solving the more complicated, the higher technical problem of cost of current radioactive charge level indicator structure, the utility model provides a material height monitoring system.
The technical scheme of the utility model:
a material height monitoring system is characterized in that:
the system comprises a mobile control platform, a data acquisition unit, a control unit and an upper computer;
the mobile control platform comprises a base, a measuring platform, a first servo motor, a second servo motor, a first guide rail and a second guide rail;
the first guide rail and the second guide rail are both vertically arranged on the base, and the measuring platform is arranged on the first guide rail and is parallel to the base; the measuring platform is used for placing a measured container;
the first servo motor is arranged on the upper part of the first guide rail, and the second servo motor is arranged on the upper part of the second guide rail;
a first sliding block capable of moving relative to the first guide rail is arranged on the first guide rail, and a second sliding block capable of moving relative to the second guide rail is arranged on the second guide rail; the positions of the first sliding block and the second sliding block correspond to each other; the first sliding block is driven by the first servo motor, and the second sliding block is driven by the second servo motor;
the data acquisition unit comprises a neutron source, a detector, a preamplifier and a data acquisition board;
the neutron source is arranged on the first sliding block, and the detector is arranged on the second sliding block; the detector is used for detecting the number of neutrons in the neutron beam emitted by the neutron source;
the preamplifier is used for amplifying the output signal of the detector;
the data acquisition board is used for acquiring the amplified output signal of the detector, converting the output signal into a digital signal and transmitting the digital signal to the control unit;
the control unit is used for converting the digital signal into the current liquid level height, sending the current liquid level height to an upper computer, and simultaneously controlling the first servo motor and the second servo motor to synchronously act to the current liquid level height;
the upper computer is used for displaying the liquid level height.
Furthermore, the control unit comprises an FPGA, a DSP, a first motor power driver and a second motor power driver; the FPGA is used for receiving the digital signal sent by the data acquisition board and sending the digital signal to the DSP; the DSP converts the digital signals into current liquid level height and sends the current liquid level height to an upper computer, and simultaneously controls a first motor power driver and a second motor power driver to respectively drive the first servo motor and the second servo motor to synchronously act to the current liquid level height.
Furthermore, in order to improve the detection sensitivity and the detection precision, the neutron source is a controllable source D-D neutron tube, and the detector is a He3 detector.
Further, the device also comprises an alarm unit; the alarm unit is connected with the control unit, receives the current liquid level height sent by the control unit, judges whether the current liquid level height reaches a liquid level threshold value, and sends an alarm signal if the current liquid level height reaches the liquid level threshold value.
Furthermore, the device also comprises a shielding cover arranged outside the mobile control platform; the shield is made of lead.
The invention also provides another material height monitoring system which is characterized in that:
the system comprises a mobile control platform, a data acquisition unit, a control unit and an upper computer;
the mobile control platform comprises a base, a measuring platform, a first servo motor, a second servo motor, a first lead screw and a second lead screw;
the first lead screw and the second lead screw are both vertically arranged on the base, and the measuring platform is arranged on the first lead screw and is parallel to the base; the measuring platform is used for placing a measured container;
the first servo motor is arranged on the upper part of the first lead screw, and the second servo motor is arranged on the upper part of the second lead screw;
the first screw rod is provided with a first nut capable of moving relative to the first screw rod, and the second screw rod is provided with a second nut capable of moving relative to the second screw rod; the first nut and the second nut are in corresponding positions; the first lead screw is driven by the first servo motor, and the second lead screw is driven by the second servo motor;
the data acquisition unit comprises a neutron source, a detector, a preamplifier and a data acquisition board;
the neutron source is arranged on the first nut, and the detector is arranged on the second nut; the detector is used for detecting the number of neutrons in the neutron beam emitted by the neutron source;
the preamplifier is used for amplifying the output signal of the detector;
the data acquisition board is used for acquiring the amplified output signal of the detector, converting the output signal into a digital signal and transmitting the digital signal to the control unit;
the control unit is used for converting the digital signal into the current liquid level height, sending the current liquid level height to an upper computer, and simultaneously controlling the first servo motor and the second servo motor to synchronously act to the current liquid level height;
the upper computer is used for displaying the liquid level height.
Furthermore, the control unit comprises an FPGA, a DSP, a first motor power driver and a second motor power driver; the FPGA is used for receiving the digital signal sent by the data acquisition board and sending the digital signal to the DSP; the DSP converts the digital signals into current liquid level height and sends the current liquid level height to an upper computer, and simultaneously controls a first motor power driver and a second motor power driver to respectively drive the first servo motor and the second servo motor to synchronously act to the current liquid level height.
Further, the neutron source is a controllable source D-D neutron tube, and the detector is a He3 detector.
Further, the device also comprises an alarm unit; the alarm unit is connected with the control unit, receives the current liquid level height sent by the control unit, judges whether the current liquid level height reaches a liquid level threshold value, and sends an alarm signal if the current liquid level height reaches the liquid level threshold value.
Furthermore, the device also comprises a shielding cover arranged outside the mobile control platform; the shield is made of lead.
The utility model has the advantages that:
1. simple structure, low cost, easy realization and convenient use
The utility model discloses a special hardware architecture and mobile control platform, adopt the rail block mechanism or the lead screw nut mechanism of two sets of synchronous actions, realized neutron source and detector synchronous motion and tracked the material charge level, the detector utilizes current calculation method after gathering the neutron number, can realize the measurement of material charge level height promptly, only need when measuring with be equipped with the container of measured material fix on measuring platform can, do not relate to the complicated installation location problem between monitored control system and the container.
2. The safety is higher
The utility model adopts the controllable source D-D neutron tube, the radiation radius is very small, the radiation quantity is very low, the influence on the human body is very small, and the safety of the device is ensured; in addition, the shielding cover is arranged outside the mobile control platform, so that the use safety of the system is further improved.
3. High detection sensitivity
The utility model discloses a He-3 detector can discern the neutron number change of high-frequency, and detectivity is higher.
4. The measurement precision is not influenced by the environment
The hardware circuit of the utility model is realized by a digital circuit and is not interfered by electromagnetism; when measuring and measuring, the utility model discloses a set up outside the container at measured material place, therefore measurement accuracy can not receive material dust, material temperature's influence.
5. Wide application range
The utility model discloses a non-contact measurement can be used for measuring the height of inflammable and explosive material, corrosive materials, and the range of application is wide.
6. The measuring efficiency is high
The utility model discloses a FPGA + DSP double chip, measurement of efficiency is high, and the measurement process need not artificial intervention moreover.
Drawings
Fig. 1 is a schematic block diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
The method comprises the following steps of 1-a base, 2-a first servo motor, 3-a second servo motor, 4-a first guide rail, 5-a second guide rail, 6-a first sliding block, 7-a second sliding block, 8-a neutron source, 9-a detector, 10-a measured container and 11-a measuring platform.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the material height monitoring system provided by the embodiment of the present invention comprises a mobile control platform, a data acquisition unit, a control unit, an upper computer and an alarm unit;
the mobile control platform comprises a base 1, a measuring platform 11, a first servo motor 2, a second servo motor 3, a first guide rail 4 and a second guide rail 5;
the first guide rail 4 and the second guide rail 5 are both vertically arranged on the base 1, and the measuring platform 11 is arranged between the first guide rail 4 and the second guide rail 5 and is parallel to the base 1; the measuring platform 11 is used for placing the container 10 to be measured;
the first servo motor 2 is arranged on the upper part of the first guide rail 1, and the second servo motor 3 is arranged on the upper part of the second guide rail 5;
a first slide block 6 which can move relative to the first guide rail 4 is arranged on the first guide rail, and a second slide block 7 which can move relative to the second guide rail is arranged on the second guide rail; the positions of the first slide block 6 and the second slide block 7 correspond; the first slide 6 is driven by the first servomotor 2, and the second slide 7 is driven by the second servomotor 3;
the data acquisition unit comprises a neutron source 8, a detector 9, a preamplifier and a data acquisition board;
the neutron source 8 is arranged on the first sliding block 6, and the detector 9 is arranged on the second sliding block 7; the detector 9 is used for detecting the number of neutrons in the neutron beam emitted by the neutron source 8; in other embodiments, the slide-rail mechanism in this embodiment may be replaced by a lead screw-nut mechanism, i.e. the first rail 4 may be replaced by a first lead screw, the first slide 6 by a first nut, and the neutron source 8 arranged on the first nut; correspondingly, the second guide rail 5 can be replaced by a second threaded spindle, the second slide 7 can be replaced by a second nut, and the detector 9 can be arranged on the second nut.
The preamplifier is used for amplifying the output signal of the detector 9;
the data acquisition board is used for acquiring the amplified output signal of the detector 9, converting the output signal into a digital signal and sending the digital signal to the control unit;
the control unit comprises an FPGA, a DSP, a first motor power driver and a second motor power driver; the FPGA is used for receiving the digital signal sent by the data acquisition board and sending the digital signal to the DSP; the DSP converts the digital signals into current liquid level height and sends the current liquid level height to the upper computer, and simultaneously controls the first motor power driver and the second motor power driver to respectively drive the first servo motor 2 and the second servo motor 3 to synchronously act to the current liquid level height.
The upper computer is used for displaying the liquid level height.
The alarm unit is connected with the control unit, receives the current liquid level height sent by the control unit, judges whether the current liquid level height reaches a liquid level threshold value, and sends an alarm signal if the current liquid level height reaches the liquid level threshold value.
In order to improve the detection sensitivity, detection accuracy and safety, the neutron source 8 in this embodiment is a controllable source D-D neutron tube (when not powered, the radioactive source does not generate neutrons, and at this time, radiation is not generated), and the detector 9 is a He3 detector.
In order to reduce radiation and further improve safety, the embodiment further comprises a shielding cover arranged outside the mobile control platform; the shield is made of lead.
The utility model discloses a theory of operation:
the utility model discloses utilize the material to shelter from the neutron ray and can lead to the principle that the neutron count that the detector detected descends (being the ray intensity decay), the hardware architecture and the mobile control platform that combine special design have realized the pursuit and the neutron count collection of material charge level position, and then can utilize current calculation method) change the neutron count into the material charge level height, realize the material height measurement.
Claims (10)
1. A material height monitoring system is characterized in that:
the system comprises a mobile control platform, a data acquisition unit, a control unit and an upper computer;
the mobile control platform comprises a base, a measuring platform, a first servo motor, a second servo motor, a first guide rail and a second guide rail;
the first guide rail and the second guide rail are both vertically arranged on the base, and the measuring platform is arranged on the first guide rail and is parallel to the base; the measuring platform is used for placing a measured container;
the first servo motor is arranged on the upper part of the first guide rail, and the second servo motor is arranged on the upper part of the second guide rail;
a first sliding block capable of moving relative to the first guide rail is arranged on the first guide rail, and a second sliding block capable of moving relative to the second guide rail is arranged on the second guide rail; the positions of the first sliding block and the second sliding block correspond to each other; the first sliding block is driven by the first servo motor, and the second sliding block is driven by the second servo motor;
the data acquisition unit comprises a neutron source, a detector, a preamplifier and a data acquisition board;
the neutron source is arranged on the first sliding block, and the detector is arranged on the second sliding block; the detector is used for detecting the number of neutrons in the neutron beam emitted by the neutron source;
the preamplifier is used for amplifying the output signal of the detector;
the data acquisition board is used for acquiring the amplified output signal of the detector, converting the output signal into a digital signal and transmitting the digital signal to the control unit;
the control unit is used for converting the digital signal into the current liquid level height, sending the current liquid level height to an upper computer, and simultaneously controlling the first servo motor and the second servo motor to synchronously act to the current liquid level height;
the upper computer is used for displaying the liquid level height.
2. The material level monitoring system of claim 1, wherein: the control unit comprises an FPGA, a DSP, a first motor power driver and a second motor power driver; the FPGA is used for receiving the digital signal sent by the data acquisition board and sending the digital signal to the DSP; the DSP converts the digital signals into current liquid level height and sends the current liquid level height to an upper computer, and simultaneously controls a first motor power driver and a second motor power driver to respectively drive the first servo motor and the second servo motor to synchronously act to the current liquid level height.
3. The material level monitoring system of claim 1, wherein: the neutron source is a controllable source D-D neutron tube, and the detector is a He3 detector.
4. A material level monitoring system according to claim 1, 2 or 3, wherein: the device also comprises an alarm unit; the alarm unit is connected with the control unit, receives the current liquid level height sent by the control unit, judges whether the current liquid level height reaches a liquid level threshold value, and sends an alarm signal if the current liquid level height reaches the liquid level threshold value.
5. The material level monitoring system of claim 4, wherein: the shielding cover is arranged outside the mobile control platform; the shield is made of lead.
6. A material height monitoring system is characterized in that:
the system comprises a mobile control platform, a data acquisition unit, a control unit and an upper computer;
the mobile control platform comprises a base, a measuring platform, a first servo motor, a second servo motor, a first lead screw and a second lead screw;
the first lead screw and the second lead screw are both vertically arranged on the base, and the measuring platform is arranged on the first lead screw and is parallel to the base; the measuring platform is used for placing a measured container;
the first servo motor is arranged on the upper part of the first lead screw, and the second servo motor is arranged on the upper part of the second lead screw;
the first screw rod is provided with a first nut capable of moving relative to the first screw rod, and the second screw rod is provided with a second nut capable of moving relative to the second screw rod; the first nut and the second nut are in corresponding positions; the first lead screw is driven by the first servo motor, and the second lead screw is driven by the second servo motor;
the data acquisition unit comprises a neutron source, a detector, a preamplifier and a data acquisition board;
the neutron source is arranged on the first nut, and the detector is arranged on the second nut; the detector is used for detecting the number of neutrons in the neutron beam emitted by the neutron source;
the preamplifier is used for amplifying the output signal of the detector;
the data acquisition board is used for acquiring the amplified output signal of the detector, converting the output signal into a digital signal and transmitting the digital signal to the control unit;
the control unit is used for converting the digital signal into the current liquid level height, sending the current liquid level height to an upper computer, and simultaneously controlling the first servo motor and the second servo motor to synchronously act to the current liquid level height;
the upper computer is used for displaying the liquid level height.
7. The material level monitoring system of claim 6, wherein: the control unit comprises an FPGA, a DSP, a first motor power driver and a second motor power driver; the FPGA is used for receiving the digital signal sent by the data acquisition board and sending the digital signal to the DSP; the DSP converts the digital signals into current liquid level height and sends the current liquid level height to an upper computer, and simultaneously controls a first motor power driver and a second motor power driver to respectively drive the first servo motor and the second servo motor to synchronously act to the current liquid level height.
8. The material level monitoring system of claim 6, wherein: the neutron source is a controllable source D-D neutron tube, and the detector is a He3 detector.
9. The material level monitoring system of claim 6 or 7 or 8, wherein: the device also comprises an alarm unit; the alarm unit is connected with the control unit, receives the current liquid level height sent by the control unit, judges whether the current liquid level height reaches a liquid level threshold value, and sends an alarm signal if the current liquid level height reaches the liquid level threshold value.
10. The material level monitoring system of claim 9, wherein: the shielding cover is arranged outside the mobile control platform; the shield is made of lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921858497.5U CN210862839U (en) | 2019-10-31 | 2019-10-31 | Material height monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921858497.5U CN210862839U (en) | 2019-10-31 | 2019-10-31 | Material height monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN210862839U true CN210862839U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921858497.5U Expired - Fee Related CN210862839U (en) | 2019-10-31 | 2019-10-31 | Material height monitoring system |
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| CN (1) | CN210862839U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031808A (en) * | 2022-05-26 | 2022-09-09 | 西安航空学院 | Level meter and detection method thereof |
| CN115031807A (en) * | 2022-01-13 | 2022-09-09 | 东华理工大学 | Neutron radiation double-collimation real-time material level measuring system based on nuclear material level meter |
-
2019
- 2019-10-31 CN CN201921858497.5U patent/CN210862839U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031807A (en) * | 2022-01-13 | 2022-09-09 | 东华理工大学 | Neutron radiation double-collimation real-time material level measuring system based on nuclear material level meter |
| CN115031808A (en) * | 2022-05-26 | 2022-09-09 | 西安航空学院 | Level meter and detection method thereof |
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Granted publication date: 20200626 Termination date: 20211031 |