CN106248179B - Centrifugal mass meter and use method thereof - Google Patents
Centrifugal mass meter and use method thereof Download PDFInfo
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- CN106248179B CN106248179B CN201610770960.5A CN201610770960A CN106248179B CN 106248179 B CN106248179 B CN 106248179B CN 201610770960 A CN201610770960 A CN 201610770960A CN 106248179 B CN106248179 B CN 106248179B
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- measuring rod
- clamping device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G9/00—Methods of, or apparatus for, the determination of weight, not provided for in groups G01G1/00 - G01G7/00
Abstract
The invention provides a centrifugal mass determinator and a use method thereof, wherein the centrifugal mass determinator comprises the following steps: the device comprises an alloy support (1), a motor and control module (3), a measuring rod (5), a clamping device (6) and a pressure detection device, wherein the motor and control module (3) is arranged on the alloy support (1) and can drive the measuring rod (5) to do circular motion; the clamping device (6) is arranged at the lower end of the measuring rod (5) and is used for clamping or placing an object to be measured; the pressure detection device is matched with the measuring rod (5) and is used for detecting the centripetal force generated when different objects do circular motion. The invention has wider application range, is not influenced by regional environment, has simple integral result, small occupied space and convenient operation, and eliminates system error by two times of measurement, thereby ensuring that the quality measurement result is more accurate.
Description
Technical Field
The invention relates to the field of mass measurement, in particular to a centrifugal mass measurement instrument and a using method thereof.
Background
In the present society, the existing mass measuring instruments include various scales, a balance, a spring balance, an electronic balance, etc., and the gravity of an object is essentially utilized in the measurement regardless of their accuracy. It is well known that gravity is variable, and altitude, latitude, etc. are factors affecting gravity. In the future, the region that needs to carry out quality measurement is wider and wider, and the required precision will be higher and higher, needs a more accurate quality testing instrument, and convenient when well-using, can also break away from gravity error's influence.
Newton's second law contains the relationship between mass, force and acceleration, where F ═ ma, if a force F is applied to an object and its acceleration a is obtained, the mass m ═ F/a can be calculated from these two parameters, and this formula can calculate the mass without being affected by the change of gravity.
Disclosure of Invention
In view of the shortcomings of the prior art, it is an object of the present invention to provide a centrifugal mass spectrometer and a method of using the same.
According to the present invention, there is provided a centrifugal mass spectrometer comprising: the device comprises an alloy bracket, a motor and control module, a measuring rod, a clamping device and a pressure detection device, wherein the motor and control module is arranged on the alloy bracket and can drive the measuring rod to do circular motion; the clamping device is arranged at the lower end of the measuring rod and used for clamping or placing an object to be measured; the pressure detection device is matched with the measuring rod and used for detecting centripetal force generated when different objects do circular motion.
Preferably, the alloy support comprises: the supporting arm is perpendicular to the plane where the bottom plate is located, and the top plate is located at the upper end of the supporting arm and perpendicular to the supporting arm.
Preferably, the method further comprises the following steps: the power distributor is arranged at the lower end position of the outer side face of the supporting arm, and the control panel is arranged at the upper end position of the outer side face of the supporting arm; the power distributor is used for providing power, and the control panel is used for controlling the quality tester to start different working modes or close the quality tester; specifically, the control panel is provided with: liquid crystal display, pilot lamp, calibration switch, weigh the switch.
Preferably, the method further comprises the following steps: one end of the ball bearing is connected with the motor and the control module; the measuring rod is of a cross structure and comprises a vertical portion and a cross arm, one end of the vertical portion is connected with the other end of the ball bearing, and the other end of the vertical portion is provided with a mounting component of the clamping device.
Preferably, the pressure detecting means includes: an outer barrel, a sleeve and a pressure sensor; the top surface of the outer barrel is fixedly connected with the motor and the control module; the measuring rod, the ball bearing, the sleeve and the pressure sensor are enclosed in an inner accommodating cavity of the outer barrel; one side of the sleeve is fixed on the inner wall of the outer barrel, and the pressure sensor is arranged in the sleeve; one end of the cross arm of the measuring rod extends into the sleeve and can be contacted with a pressure sensor inside the sleeve.
Preferably, the clamping device is mounted at the other end of the vertical portion of the measuring rod, wherein: the clamping device is provided with a first fixing point and a second fixing point, and the clamping device can be connected with the measuring rod through the first fixing point or the second fixing point respectively.
Preferably, the outer end of the clamping device is provided with a storage box or a fixing clip.
Preferably, the distances from the first fixed point and the second fixed point to the measuring rod are different; specifically, when the outer barrel is driven to rotate by the motor and the control module, the sleeve drives the measuring rod to do circular motion, and the radius of the object placing box or the fixing clamp at the outer end of the clamping device rotating around the vertical part of the measuring rod is changed through different installation positions of the clamping device.
The use method of the centrifugal mass spectrometer provided by the invention is applied to the centrifugal mass spectrometer and comprises the following steps:
the calibration step comprises:
step A1: the clamping device is fixedly arranged at the lower end of the measuring rod through a first fixed point, an instrument calibration mode is started through the control panel, and the instrument calibration mode is stopped after the instrument calibration mode is rotated stably;
step A2: taking the clamping device off the first fixed point, tightly installing the clamping device at the lower end of the measuring rod through the second fixed point, starting an instrument calibration mode through the control panel, and resetting the operation to zero after the rotation is stable;
the weighing step comprises:
step B1: fixing an object to be weighed at the outer end of the clamping device, fixing the clamping device on the measuring rod through a first fixing point, starting an instrument weighing mode at the control panel, and stopping after the instrument is rotated stably;
step B2: the clamping device is taken down from the first fixed point and is fixed on the measuring rod through the second fixed point, the instrument weighing mode is started on the control panel, and the mass of the object is read after the instrument is rotated stably.
Preferably, the calculation formula of the object mass is as follows:
F1＝ma1＝mw1 2(R1+d)，
F2＝ma2＝mw2 2(R2+d)，
F1/w1 2-F2/w2 2＝m(R1-R2)，
m＝(F1/w1 2-F2/w2 2)/(R1-R2)，
in the formula: f1Representing the centripetal force, F, at the location of the first fixed point2Representing the centripetal force at the location of the second fixed point, m representing the mass of the object, a1Representing the acceleration of the object at the location of the first fixed point, a2Representing the acceleration, w, of the object at the location of the second fixed point1Representing the angular velocity, w, of the object at the location of the first fixed point2Representing the angular velocity, R, of the object at the location of the second fixed point1Radius, R, representing the circular motion of the object at the location of the first fixed point2The radius of the circular motion of the object at the second fixed point position is shown, and d represents the distance deviation of the center of gravity of the object from the outer end edge of the rod.
Compared with the prior art, the invention has the following beneficial effects:
1. the principle adopted by the invention is Newton's second law, and the weighing is not influenced by the altitude and the latitude, so that the accuracy and the reliability of the result are ensured.
2. The invention has wider application range, and comprises space environments such as spacecrafts, space stations, moon and other stars.
3. The invention adopts a method of making the object do circular motion, occupies small space, is convenient to operate, and eliminates system errors through two measurements.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a front view of a mass spectrometer of the present invention;
fig. 2 is an isometric view of the interior of a mass meter according to the present invention.
In the figure:
1-an alloy support;
2-a control panel;
21-a liquid crystal display screen;
22-an indicator light;
3-a motor and control module;
4-an outer barrel;
5-a measuring rod;
6-a clamping device;
61-first fixation point;
62-a second fixation point;
63-a fixation clamp;
7-a ball bearing;
8-a sleeve;
9-a pressure sensor;
10-distributor bit.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
According to the present invention, there is provided a centrifugal mass spectrometer, as shown in fig. 1, comprising: the device comprises an alloy support 1, a control panel 2, a motor and control module 3, an outer barrel 4, a measuring rod 5, a clamping device 6, a ball bearing 7, a sleeve 8, a pressure sensor 9 and a distributor 10, wherein the motor and control module 3 is fixed below a top plate of the alloy support 1, and the outer barrel 4 is installed at the lower end of the motor and control module 3 in a suspension mode;
the alloy holder 1 includes: the power distribution device comprises a top plate, a supporting arm and a bottom plate, wherein the supporting arm is perpendicular to the plane where the bottom plate is located, the top plate is located at the upper end of the supporting arm and perpendicular to the supporting arm, the power distributor 10 is installed at the lower end of the outer side face of the supporting arm, and the control panel 2 is installed at the upper end of the outer side face of the supporting arm.
The outer barrel 4 covers the ball bearing 7, the measuring rod 5 and the sleeve 8, wherein one side of the sleeve 8 is fixed on the inner wall of the outer barrel 4, and the other side of the sleeve 8 is sleeved on the measuring rod 5.
The measuring rod 5 is of a cross structure and comprises a vertical part and a cross arm, one end of the vertical part is connected with the other end of the ball bearing 7, and the other end of the vertical part is provided with an installation part of the clamping device 6; one end of the cross arm extends into the sleeve 8 and contacts a pressure sensor 9 inside the sleeve 8.
The clamping device 6 is mounted at the other end of the vertical portion of the measuring rod 5, wherein: the holding device 6 is provided with a first fixing point 61 and a second fixing point 62, and the holding device 6 can be connected to the measuring rod 5 via the first fixing point 61 or the second fixing point 62, respectively.
The outer end of the clamping device 6 is provided with a storage box or a fixing clamp 63.
The distances from the first fixed point 61 and the second fixed point 62 to the measuring rod 5 are different, when the outer barrel 4 is driven by the motor to rotate, the sleeve 8 drives the measuring rod 5 to do circular motion, the radius of the object placing box or the fixed clamp 63 at the outer end of the clamping device 6 rotating around the vertical part of the measuring rod 5 is changed through different installation positions of the clamping device 6, and therefore system errors are eliminated through calculation of difference values.
The distributor 10 is arranged at the side position of the lower end part of the alloy bracket 1, the distributor 10 is connected with the control panel 2 and other electric components to provide power for each component, and an emergency brake button is arranged for cutting off all power supplies in an emergency state by one key.
The motor and control module 3 is internally provided with a rechargeable battery, so that the motor and control module can conveniently work without an external power supply.
As shown in fig. 2, the measuring rod 5 is vertically suspended by a ball bearing 7 and can be driven to rotate by a sleeve 8 fixed on the outer barrel 4, the measuring rod 5 drives the clamping device 6 to rotate, and the pressure applied to the sleeve by the measuring rod is different according to different clamped weights.
The use method of the centrifugal mass spectrometer according to the invention comprises the following steps:
a calibration step:
the instrument is not used for a long time and needs to be calibrated before use.
Step A1: the clamping device 6 is fixed at the lower end of the measuring rod 5 through a first fixing point 61, an instrument calibration mode is started through the control panel 2, and the instrument calibration mode is stopped after the rotation is stable (an indicator lamp is on);
step A2: the clamping device is taken down from the first fixed point 61, fixed at the lower end of the measuring rod 5 through the second fixed point 62, the instrument calibration mode is started through the control panel 2, and after the rotation is stable (the indicator light is on), the operation is reset to zero.
Weighing:
step B1: fixing an object to be weighed at the object placing end of the clamping device 6, fixing the clamping device on the measuring rod 5 through a first fixing point 61, starting an instrument weighing mode at the control panel 2, and stopping after the rotation is stable (an indicator lamp is on);
step B2: the gripping device 6 is removed from the first fixing point 61 and fixed to the measuring rod 5 by means of the second fixing point 62, and after the control panel 2 has started the instrument weighing mode and has stabilized rotation (the indicator light is on), the mass m can be read.
The basic principles of mass calculation are newton's second law, F ═ ma, and centripetal acceleration a, a ═ w2R, w represents the angular velocity, R represents the radius of the circular motion, which passes through two different fixed points so as to obtain different radii of rotation, denoted as R1、R2And the distance deviation between the gravity center of the object and the outer end edge of the rod is recorded as d, and the specific calculation formula is as follows:
F1＝ma1＝mw1 2(R1+d)，
F2＝ma2＝mw2 2(R2+d)，
F1/w1 2-F2/w2 2＝m(R1-R2)，
m＝(F1/w1 2-F2/w2 2)/(R1-R2)，
in the formula: f1Representing the centripetal force, F, at the location of the first fixed point2Representing the centripetal force at the location of the second fixed point, m representing the mass of the object, a1Representing the acceleration of the object at the location of the first fixed point, a2Indicating a second fixed point locationAcceleration of the object, w1Representing the angular velocity, w, of the object at the location of the first fixed point2Representing the angular velocity, R, of the object at the location of the second fixed point1Radius, R, representing the circular motion of the object at the location of the first fixed point2Representing the radius of the circular motion of the object at the location of the second fixed point.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. A centrifugal mass spectrometer, comprising: the device comprises an alloy support (1), a motor and control module (3), a measuring rod (5), a clamping device (6) and a pressure detection device, wherein the motor and control module (3) is arranged on the alloy support (1) and can drive the measuring rod (5) to do circular motion; the clamping device (6) is arranged at the lower end of the measuring rod (5) and is used for clamping or placing an object to be measured; the pressure detection device is matched with the measuring rod (5) and is used for detecting centripetal force generated when different objects do circular motion;
further comprising: one end of the ball bearing (7) is connected with the motor and the control module (3); the measuring rod (5) is of a cross structure and comprises a vertical part and a cross arm, one end of the vertical part is connected with the other end of the ball bearing (7), and the other end of the vertical part is provided with an installation part of the clamping device (6);
the pressure detection device includes: an outer barrel (4), a sleeve (8) and a pressure sensor (9); the top surface of the outer barrel (4) is fixedly connected with the motor and the control module (3); the measuring rod (5), the ball bearing (7), the sleeve (8) and the pressure sensor (9) are enclosed in an inner accommodating cavity of the outer barrel (4); one side of the sleeve (8) is fixed on the inner wall of the outer barrel (4), and the pressure sensor (9) is arranged inside the sleeve (8); one end of the cross arm of the measuring rod (5) extends into the sleeve (8) and can be contacted with a pressure sensor (9) inside the sleeve (8).
2. Centrifugal mass meter according to claim 1, characterized in that the alloy holder (1) comprises: the supporting arm is perpendicular to the plane where the bottom plate is located, and the top plate is located at the upper end of the supporting arm and perpendicular to the supporting arm.
3. The centrifugal mass meter of claim 2, further comprising: the power distributor (10) is installed at the lower end position of the outer side face of the supporting arm, and the control panel (2) is installed at the upper end position of the outer side face of the supporting arm; wherein the distributor (10) is used for providing electric energy, and the control panel (2) is used for controlling the quality tester to start different working modes or close the quality tester; specifically, the control panel (2) is provided with: liquid crystal display (21), pilot lamp (22), calibration switch, weigh the switch.
4. Centrifugal mass meter according to claim 1, characterized in that the clamping device (6) is mounted at the other end of the vertical part of the measuring rod (5), wherein: the clamping device (6) is provided with a first fixing point (61) and a second fixing point (62), and the clamping device (6) can be connected with the measuring rod (5) through the first fixing point (61) or the second fixing point (62).
5. Centrifugal mass meter according to claim 1, characterized in that the outer end of the holding device (6) is provided with a storage box or retaining clip (63).
6. Centrifugal mass meter according to claim 4, characterized in that the distances of the first fixing point (61), the second fixing point (62) to the measuring rod (5) are different; specifically, when the outer barrel (4) is driven to rotate by the motor and the control module (3), the sleeve (8) simultaneously drives the measuring rod (5) to do circular motion, and the radius of the object placing box or the fixing clamp (63) at the outer end of the clamping device (6) rotating around the vertical part of the measuring rod (5) is changed through different installation positions of the clamping device (6).
7. Use of a centrifugal mass spectrometer, characterized in that it is applied to a centrifugal mass spectrometer according to any of claims 1 to 5, comprising the steps of:
the calibration step comprises:
step A1: the clamping device (6) is fixedly arranged at the lower end of the measuring rod (5) through a first fixed point (61), an instrument calibration mode is started through the control panel (2), and the instrument calibration mode is stopped after the rotation is stable;
step A2: the clamping device is taken down from the first fixed point (61), is fixedly arranged at the lower end of the measuring rod (5) through the second fixed point (62), starts an instrument calibration mode through the control panel (2), and returns to zero after the rotation is stable;
the weighing step comprises:
step B1: fixing an object to be weighed at the outer end of a clamping device (6), fixing the clamping device (6) on a measuring rod (5) through a first fixing point (61), starting an instrument weighing mode on a control panel (2), and stopping after the instrument is rotated stably;
step B2: the clamping device (6) is removed from the first fixing point (61), is fixed on the measuring rod (5) through the second fixing point (62), the instrument weighing mode is started on the control panel (2), and the mass of the object is read after the rotation is stable.
8. Use of a centrifugal mass spectrometer according to claim 7, characterized in that the calculation formula of the mass of the object is as follows:
F1＝ma1＝mw1 2(R1+d)，
F2＝ma2＝mw2 2(R2+d)，
F1/w1 2-F2/w2 2＝m(R1-R2)，
m＝(F1/w1 2-F2/w2 2)/(R1-R2)，
in the formula: f1Representing the centripetal force, F, at the location of the first fixed point2Representing the centripetal force at the location of the second fixed point, m representing the mass of the object, a1Representing the acceleration of the object at the location of the first fixed point, a2Representing the acceleration, w, of the object at the location of the second fixed point1Representing the angular velocity, w, of the object at the location of the first fixed point2Representing the angular velocity, R, of the object at the location of the second fixed point1Radius, R, representing the circular motion of the object at the location of the first fixed point2The radius of the circular motion of the object at the second fixed point position is shown, and d represents the distance deviation of the center of gravity of the object from the outer end edge of the rod.
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| CN201610770960.5A CN106248179B (en) | 2016-08-29 | 2016-08-29 | Centrifugal mass meter and use method thereof |
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| CN110160612A (en) * | 2019-05-21 | 2019-08-23 | 江汉大学 | A kind of loss of weight scale |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139755A (en) * | 1994-08-04 | 1997-01-08 | 豪尼机械制造股份公司 | Method and device for determining weight of bar-shape articles in tabacoo industry |
| CN1264465A (en) * | 1997-07-25 | 2000-08-23 | 海因科尔股份公司 | Device for conducting weight measurement in centrifuges |
| CN103017874A (en) * | 2012-09-03 | 2013-04-03 | 中山大学 | Vehicle weight measuring system based on GPS (Global Position System) and inertial sensor |
| CN103278226A (en) * | 2013-06-24 | 2013-09-04 | 耿国强 | Weighing method for adhesive powder materials and weighing device |
| CN203824625U (en) * | 2014-03-05 | 2014-09-10 | 浙江海洋学院 | Weight-scale table used in lab |
-
2016
- 2016-08-29 CN CN201610770960.5A patent/CN106248179B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139755A (en) * | 1994-08-04 | 1997-01-08 | 豪尼机械制造股份公司 | Method and device for determining weight of bar-shape articles in tabacoo industry |
| CN1264465A (en) * | 1997-07-25 | 2000-08-23 | 海因科尔股份公司 | Device for conducting weight measurement in centrifuges |
| CN103017874A (en) * | 2012-09-03 | 2013-04-03 | 中山大学 | Vehicle weight measuring system based on GPS (Global Position System) and inertial sensor |
| CN103278226A (en) * | 2013-06-24 | 2013-09-04 | 耿国强 | Weighing method for adhesive powder materials and weighing device |
| CN203824625U (en) * | 2014-03-05 | 2014-09-10 | 浙江海洋学院 | Weight-scale table used in lab |
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