CN210862839U - Material height monitoring system - Google Patents
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Abstract
为解决现有的放射性料位计结构比较复杂、成本较高的技术问题，本实用新型提供了一种物料高度监控系统，设计了特殊的硬件架构以及移动控制平台，采用两组同步动作的导轨滑块机构或者丝杠螺母机构，实现了中子源与探测器同步移动追踪物料料面，探测器采集到中子数后利用现有的计算方法，即能够实现物料料面高度的测量，在测量时只需要将装有被测物料的容器固定在测量平台上即可，不涉及监控系统与容器之间的复杂的安装定位问题。
In order to solve the technical problems of complicated structure and high cost of the existing radioactive material level gauge, the utility model provides a material height monitoring system, a special hardware structure and a mobile control platform are designed, and two sets of guide rails with synchronous action are adopted. The slider mechanism or the screw nut mechanism realizes the synchronous movement of the neutron source and the detector to track the material surface. After the detector collects the number of neutrons, the existing calculation method can be used, that is, the height of the material surface can be measured. When measuring, it is only necessary to fix the container containing the material to be measured on the measuring platform, and it does not involve the complicated installation and positioning problem between the monitoring system and the container.
Description
技术领域technical field
本实用新型涉及一种物料高度监控系统，主要用于化学领域所涉及的物料的高度监控。The utility model relates to a material height monitoring system, which is mainly used for the height monitoring of materials involved in the chemical field.
背景技术Background technique
传统物料高度测量装置按照测量方式有接触式和非接触式；接触式物料高度测量装置，如接触式液位计，其测量精度易受环境(例如物料粉尘和物料温度)影响，并且当待测物料为较强腐蚀性物料时，接触式物料高度测量装置因易被腐蚀而不适用；非接触式物料高度测量装置通常采用超声波探头、雷达探头、电容探头等方式实现测量，可以测量腐蚀性及易燃易爆物料高度，但是也存在测量精度易受环境(例如电磁干扰、物料粉尘、物料温度)影响的弊端，而且在测量时，仍需要将探头至于容器内，操作不当时还容易粘料，影响仪器自身精度。The traditional material height measuring device has contact type and non-contact type according to the measurement method; the contact type material height measuring device, such as the contact liquid level meter, its measurement accuracy is easily affected by the environment (such as material dust and material temperature), and when it is to be measured. When the material is a strong corrosive material, the contact type material height measuring device is not suitable because it is easily corroded; the non-contact material height measuring device usually adopts ultrasonic probe, radar probe, capacitance probe and other methods to realize the measurement, which can measure the corrosiveness and corrosion resistance. The height of flammable and explosive materials is high, but there is also the disadvantage that the measurement accuracy is easily affected by the environment (such as electromagnetic interference, material dust, material temperature), and when measuring, the probe still needs to be placed in the container, and it is easy to stick to the material when the operation is improper. , affecting the accuracy of the instrument itself.
放射性料位计为一种非接触测量设备，测量精度不受物料粉尘、物料温度的影响，可以很好的解决上述技术问题，其测量原理是：射线穿过物料时的强度减弱规律与射线通过物料的路径有关，而对于一定的几何位置，路径又与料位成正比，因此可以基于射线穿过物料时的强度减弱规律，实现物料料位的测量。The radioactive material level meter is a non-contact measuring device. The measurement accuracy is not affected by material dust and material temperature. It can solve the above technical problems very well. The path of the material is related, and for a certain geometric position, the path is proportional to the material level, so the measurement of the material level can be realized based on the weakening law of the intensity of the ray passing through the material.
但是，现有的放射性料位计结构比较复杂、成本较高。However, the existing radioactive material level gauge has a complex structure and high cost.
实用新型内容Utility model content
为解决现有的放射性料位计结构比较复杂、成本较高的技术问题，本实用新型提供了一种物料高度监控系统。In order to solve the technical problems of complicated structure and high cost of the existing radioactive material level gauge, the utility model provides a material height monitoring system.
本实用新型的技术方案：The technical scheme of the present utility model:
一种物料高度监控系统，其特殊之处在于：A material height monitoring system, its special features are:
包括移动控制平台、数据采集单元、控制单元、上位机；Including mobile control platform, data acquisition unit, control unit, upper computer;
移动控制平台包括底座、测量平台、第一伺服电机、第二伺服电机、第一导轨、第二导轨；The mobile control platform includes a base, a measuring platform, a first servo motor, a second servo motor, a first guide rail, and a second guide rail;
第一导轨和第二导轨均垂直设置在底座上，测量平台设置在第一导轨上，并与底座平行；测量平台用于放置被测容器；Both the first guide rail and the second guide rail are 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 to place the container under test;
第一伺服电机设置在第一导轨的上部，第二伺服电机设置在第二导轨的上部；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;
第一导轨上设置有可相对其运动的第一滑块，第二导轨上设置有可相对其运动的第二滑块；第一滑块和第二滑块的位置相对应；第一滑块被所述第一伺服电机驱动，第二滑块被所述第二伺服电机驱动；A first sliding block that can move relative to it is arranged on the first guide rail, and a second sliding block that can move relative to it is arranged on the second guide rail; the positions of the first sliding block and the second sliding block are corresponding; the first sliding block is driven by the first servo motor, and the second slider is driven by the second servo motor;
数据采集单元包括中子源、探测器、前置放大器、数据采集板；The data acquisition unit includes a neutron source, a detector, a preamplifier, and a data acquisition board;
中子源设置在所述第一滑块上，探测器设置在所述第二滑块上；探测器用于探测所述中子源所放射中子束中的中子数目；The neutron source is arranged on the first slider, and the detector is arranged on the second slider; the detector is used to detect the number of neutrons in the neutron beam emitted by the neutron source;
前置放大器用于对探测器的输出信号进行放大；The preamplifier is used to amplify the output signal of the detector;
数据采集板用于采集放大后的探测器输出信号，并转换为数字信号，并发送至控制单元；The data acquisition board is used to collect the amplified detector output signal, convert it into a digital signal, and send it to the control unit;
控制单元用于将所述数字信号转换为当前液位高度并发送至上位机，同时控制所述第一伺服电机和第二伺服电机同步动作至当前液位高度处；The control unit is used to convert the digital signal into the current liquid level height and send it to the host computer, and control the first servo motor and the second servo motor to act synchronously to the current liquid level height at the same time;
上位机用于显示所述液位高度。The upper computer is used to display the liquid level height.
进一步地，控制单元包括FPGA、DSP、第一电机功率驱动器和第二电机功率驱动器；FPGA用于接收所述数据采集板所发送的数字信号，并发送给 DSP；DSP将所述数字信号转换为当前液位高度发送给上位机，同时控制第一电机功率驱动器和第二电机功率驱动器分别驱动所述第一伺服电机和第二伺服电机同步动作至当前液位高度处。Further, the control unit includes an FPGA, a DSP, a first motor power driver and a second motor power driver; the FPGA is used to receive the digital signal sent by the data acquisition board and send it to the DSP; the DSP converts the digital signal into The current liquid level is sent to the host computer, and the first motor power driver and the second motor power driver are controlled to drive the first servo motor and the second servo motor to act synchronously to the current liquid level.
进一步地，为提高探测灵敏度以及探测精度，中子源为可控源D-D中子管，所述探测器为He3探测器。Further, in order to improve detection sensitivity and detection accuracy, the neutron source is a controllable source D-D neutron tube, and the detector is a He3 detector.
进一步地，还包括报警单元；报警单元与控制单元相连，接收控制单元发送的当前液位高度，并判断是否达到液位阈值，若是，则发出报警信号。Further, an alarm unit is also included; the alarm unit is connected with the control unit, receives the current liquid level height sent by the control unit, and judges whether the liquid level threshold is reached, and if so, sends out an alarm signal.
进一步地，还包括设置在移动控制平台外的屏蔽罩；屏蔽罩由铅制成。Further, it also includes a shielding cover arranged outside the mobile control platform; the shielding cover is made of lead.
本发明还提供了另一种物料高度监控系统，其特殊之处在于：The present invention also provides another material height monitoring system, which is special in that:
包括移动控制平台、数据采集单元、控制单元、上位机；Including mobile control platform, data acquisition unit, control unit, upper computer;
移动控制平台包括底座、测量平台、第一伺服电机、第二伺服电机、第一丝杠、第二丝杠；The mobile control platform includes a base, a measurement platform, a first servo motor, a second servo motor, a first lead screw, and a second lead screw;
第一丝杠和第二丝杠均垂直设置在底座上，测量平台设置在第一丝杠上，并与底座平行；测量平台用于放置被测容器；Both the first lead screw and the second lead screw are 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 to place the container to be measured;
第一伺服电机设置在第一丝杠的上部，第二伺服电机设置在第二丝杠的上部；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;
第一丝杠上设置有可相对其运动的第一螺母，第二丝杠上设置有可相对其运动的第二螺母；第一螺母和第二螺母的位置相对应；第一丝杠被所述第一伺服电机驱动，第二丝杠被所述第二伺服电机驱动；The first lead screw is provided with a first nut that can move relative to it, and the second lead screw is provided with a second nut that can move relative to it; the positions of the first nut and the second nut are corresponding; the first lead screw is the first servo motor is driven, and the second lead screw is driven by the second servo motor;
数据采集单元包括中子源、探测器、前置放大器、数据采集板；The data acquisition unit includes a neutron source, a detector, a preamplifier, and a data acquisition board;
中子源设置在所述第一螺母上，探测器设置在所述第二螺母上；探测器用于探测所述中子源所放射中子束中的中子数目；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;
前置放大器用于对探测器的输出信号进行放大；The preamplifier is used to amplify the output signal of the detector;
数据采集板用于采集放大后的探测器输出信号，并转换为数字信号，并发送至控制单元；The data acquisition board is used to collect the amplified detector output signal, convert it into a digital signal, and send it to the control unit;
控制单元用于将所述数字信号转换为当前液位高度并发送至上位机，同时控制所述第一伺服电机和第二伺服电机同步动作至当前液位高度处；The control unit is used to convert the digital signal into the current liquid level height and send it to the host computer, and control the first servo motor and the second servo motor to act synchronously to the current liquid level height at the same time;
上位机用于显示所述液位高度。The upper computer is used to display the liquid level height.
进一步地，控制单元包括FPGA、DSP、第一电机功率驱动器和第二电机功率驱动器；FPGA用于接收所述数据采集板所发送的数字信号，并发送给 DSP；DSP将所述数字信号转换为当前液位高度发送给上位机，同时控制第一电机功率驱动器和第二电机功率驱动器分别驱动所述第一伺服电机和第二伺服电机同步动作至当前液位高度处。Further, the control unit includes an FPGA, a DSP, a first motor power driver and a second motor power driver; the FPGA is used to receive the digital signal sent by the data acquisition board and send it to the DSP; the DSP converts the digital signal into The current liquid level is sent to the host computer, and the first motor power driver and the second motor power driver are controlled to drive the first servo motor and the second servo motor to act synchronously to the current liquid level.
进一步地，中子源为可控源D-D中子管，所述探测器为He3探测器。Further, the neutron source is a controllable source D-D neutron tube, and the detector is a He3 detector.
进一步地，还包括报警单元；报警单元与控制单元相连，接收控制单元发送的当前液位高度，并判断是否达到液位阈值，若是，则发出报警信号。Further, an alarm unit is also included; the alarm unit is connected with the control unit, receives the current liquid level height sent by the control unit, and judges whether the liquid level threshold is reached, and if so, sends out an alarm signal.
进一步地，还包括设置在移动控制平台外的屏蔽罩；屏蔽罩由铅制成。Further, it also includes a shielding cover arranged outside the mobile control platform; the shielding cover is made of lead.
本实用新型的优点：The advantages of the utility model:
1、结构简单、成本低、易实现，且使用方便1. Simple structure, low cost, easy to implement, and easy to use
本实用新型设计了特殊的硬件架构以及移动控制平台，采用两组同步动作的导轨滑块机构或者丝杠螺母机构，实现了中子源与探测器同步移动追踪物料料面，探测器采集到中子数后利用现有的计算方法，即能够实现物料料面高度的测量，在测量时只需要将装有被测物料的容器固定在测量平台上即可，不涉及监控系统与容器之间的复杂的安装定位问题。The utility model designs a special hardware structure and a mobile control platform, adopts two sets of synchronously acting guide rail slider mechanisms or lead screw nut mechanisms, so that the neutron source and the detector can move synchronously to track the material surface, and the detector collects the middle After counting, the existing calculation method can be used, that is, the measurement of the material surface height can be realized. During the measurement, the container containing the measured material only needs to be fixed on the measurement platform, without involving the monitoring system and the container. Complex installation and positioning problems.
2、安全性较高2. High security
本实用新型采用可控源D-D中子管，辐射半径很小，辐射量很低，对人体影响很小，保证了设备的安全性；另外，在移动控制平台外设置了屏蔽罩，进一步提高了系统使用的安全性。The utility model adopts the controllable source D-D neutron tube, the radiation radius is very small, the radiation amount is very low, the impact on the human body is small, and the safety of the equipment is ensured; in addition, a shielding cover is arranged outside the mobile control platform, which further improves the Security of system use.
3、探测灵敏高3. High detection sensitivity
本实用新型采用He-3探测器，能够识别高频率的中子数变化，探测灵敏度更高。The utility model adopts the He-3 detector, which can identify the change of high-frequency neutron number and has higher detection sensitivity.
4、测量精度不受环境影响4. The measurement accuracy is not affected by the environment
本实用新型的硬件电路通过数字电路实现，不受电磁干扰；在测量测量时，本实用新型是设置在被测物料所在的容器外，因而测量精度不会受到物料粉尘、物料温度的影响。The hardware circuit of the utility model is realized by a digital circuit and is not subject to electromagnetic interference; during measurement, the utility model is arranged outside the container where the material to be measured is located, so the measurement accuracy is not affected by material dust and material temperature.
5、适用范围广5. Wide range of application
本实用新型为非接触式测量，可以用于测量易燃易爆物料、腐蚀性物料的高度，应用范围广。The utility model is a non-contact measurement, which can be used to measure the height of inflammable and explosive materials and corrosive materials, and has a wide application range.
6、测量效率高6. High measurement efficiency
本实用新型采用FPGA+DSP双芯片，测量效率高，而且测量过程无需人工干预。The utility model adopts FPGA+DSP dual chips, has high measurement efficiency, and does not require manual intervention in the measurement process.
附图说明Description of drawings
图1本实用新型实施例的原理框图。Fig. 1 is a schematic block diagram of an embodiment of the present invention.
图2是本实用新型的结构示意图。Figure 2 is a schematic structural diagram of the present invention.
1-底座，2-第一伺服电机，3-第二伺服电机，4-第一导轨，5-第二导轨， 6-第一滑块，7-第二滑块，8-中子源，9-探测器，10-被测容器，11-测量平台。1-base, 2-first servo motor, 3-second servo motor, 4-first guide rail, 5-second guide rail, 6-first slider, 7-second slider, 8-neutron source, 9-detector, 10-measured container, 11-measurement platform.
具体实施方式Detailed ways
以下结合附图对本实用新型作进一步说明。The present utility model will be further described below in conjunction with the accompanying drawings.
如图1、图2所示，本实用新型实施例所提供的物料高度监控系统，包括移动控制平台、数据采集单元、控制单元、上位机和报警单元；As shown in Figure 1 and Figure 2, the material height monitoring system provided by the embodiment of the present invention includes a mobile control platform, a data acquisition unit, a control unit, a host computer and an alarm unit;
移动控制平台包括底座1、测量平台11、第一伺服电机2、第二伺服电机 3、第一导轨4、第二导轨5；The mobile control platform includes a base 1, a measurement platform 11, a
第一导轨4和第二导轨5均垂直设置在底座1上，测量平台11设置在第一导轨4和第二导轨5之间，并与底座1平行；测量平台11用于放置被测容器10；Both the first guide rail 4 and the
第一伺服电机2设置在第一导轨1的上部，第二伺服电机3设置在第二导轨5的上部；The
第一导轨4上设置有可相对其运动的第一滑块6，第二导轨上设置有可相对其运动的第二滑块7；第一滑块6和第二滑块7的位置相对应；第一滑块6 被所述第一伺服电机2驱动，第二滑块7被所述第二伺服电机3驱动；The first guide rail 4 is provided with a first sliding block 6 that can move relative to it, and the second guide rail is provided with a second sliding block 7 that can move relative to it; the positions of the first sliding block 6 and the second sliding block 7 correspond to each other. ; The first slider 6 is driven by the
数据采集单元包括中子源8、探测器9、前置放大器、数据采集板；The data acquisition unit includes a
中子源8设置在所述第一滑块6上，探测器9设置在所述第二滑块7上；探测器9用于探测所述中子源8所放射中子束中的中子数目；在另一些实施例中，本实施例中的滑块导轨机构可由丝杠螺母机构替代，即将第一导轨4 可以由第一丝杠替代，第一滑块6由第一螺母替代，而将中子源8设置在第一螺母上；相应的，第二导轨5可由第二丝杠替代，第二滑块7可由第二螺母替代，将探测器9设置在第二螺母上。The
前置放大器用于对探测器9的输出信号进行放大；The preamplifier is used to amplify the output signal of the
数据采集板用于采集放大后的探测器9输出信号，并转换为数字信号，并发送至控制单元；The data acquisition board is used to collect the amplified output signal of the
控制单元包括FPGA、DSP、第一电机功率驱动器和第二电机功率驱动器； FPGA用于接收所述数据采集板所发送的数字信号，并发送给DSP；DSP将数字信号转换为当前液位高度发送给上位机，同时控制第一电机功率驱动器和第二电机功率驱动器分别驱动所述第一伺服电机2和第二伺服电机3同步动作至当前液位高度处。The control unit includes an FPGA, a DSP, a first motor power driver and a second motor power driver; the FPGA is used to receive the digital signal sent by the data acquisition board and send it to the DSP; the DSP converts the digital signal into the current liquid level and sends it To the upper computer, control the first motor power driver and the second motor power driver to drive the
上位机用于显示所述液位高度。The upper computer is used to display the liquid level height.
报警单元与控制单元相连，接收控制单元发送的当前液位高度，并判断是否达到液位阈值，若是，则发出报警信号。The alarm unit is connected with the control unit, receives the current liquid level height sent by the control unit, and judges whether the liquid level threshold is reached, and if so, sends out an alarm signal.
为提高探测灵敏度、探测精度以及安全性，本实施例中子源8为可控源 D-D中子管(不通电时放射源不产生中子，此时不会产生辐射)，所述探测器 9为He3探测器。In order to improve the detection sensitivity, detection accuracy and safety, the
为减小辐射，以进一步提高安全性，本实施例还包括设置在移动控制平台外的屏蔽罩；屏蔽罩由铅制成。In order to reduce radiation and further improve safety, this embodiment further includes a shielding cover disposed outside the mobile control platform; the shielding cover is made of lead.
本实用新型的工作原理：The working principle of the present utility model:
本实用新型利用物料遮挡中子射线会导致探测器探测到的中子计数下降 (即射线强度衰减)的原理，结合特殊设计的硬件架构以及移动控制平台实现了物料料面位置的追踪和中子计数采集，进而得以利用现有的计算方法) 将中子计数转变为物料料面高度，实现物料高度测量。The utility model utilizes the principle that the material shielding the neutron rays will cause the neutron count detected by the detector to decrease (that is, the attenuation of the ray intensity), and combined with the specially designed hardware structure and the mobile control platform, the tracking of the material surface position and the neutron detection are realized. Count collection, and then use the existing calculation method) to convert the neutron count into the material surface height to realize the material height measurement.
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| CN115031807A (en) * | 2022-01-13 | 2022-09-09 | 东华理工大学 | A neutron radiation dual-collimation real-time level measurement system based on nuclear level gauge |
| CN115031808A (en) * | 2022-05-26 | 2022-09-09 | 西安航空学院 | Level meter and detection method thereof |
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| CN115031807A (en) * | 2022-01-13 | 2022-09-09 | 东华理工大学 | A neutron radiation dual-collimation real-time level measurement system based on nuclear level gauge |
| CN115031808A (en) * | 2022-05-26 | 2022-09-09 | 西安航空学院 | Level meter and detection method thereof |
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