CN206300608U - A kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection - Google Patents
A kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection Download PDFInfo
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- CN206300608U CN206300608U CN201621022541.5U CN201621022541U CN206300608U CN 206300608 U CN206300608 U CN 206300608U CN 201621022541 U CN201621022541 U CN 201621022541U CN 206300608 U CN206300608 U CN 206300608U
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- magnetic field
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- angular sensor
- angle measurement
- measurement apparatus
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Abstract
The utility model discloses a kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection, including the first mark magnet and for detecting the first the first magnetic field angular sensor for marking magnet magnetic line of force direction, there is gap between the first mark magnet and the first magnetic field angular sensor.A kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection of the utility model, realize cheap individual pen absolute value type angular surveying requirement；Measured using magnetic coupling between the measurement apparatus and Magnetic Measurement primary standard substance of angle measurement system, there is no the wear problem in long-term use；Magnetic coupling measurement is without servicing units such as shaft joints, and installation is convenient；Two-stage individual pen absolute value type angle measurement unit can improve certainty of measurement by combining, and meet high-precision smooth heat build-up tracking system measurement request.
Description
Technical field
The utility model belongs to solar tracking system angle detection technique field, and in particular to a kind of based on magnetic field detection
Separate type sun tracing system rotational angle measurement apparatus.
Background technology
Solar tracking system is widely used in solar energy power generating and solar light-heat power-generation field.Solar tracking system
Mainly it is made up of mechanically tracking support and automatic tracking control apparatus two large divisions, optical detection is broadly divided into control mode
Method and astronomical calculating method.Optical detection detects the orientation of the sun and realizes tracing control using photoelectric sensor, although simple
It is cheap but reliability is low.Longitude, latitude and the Time Calculation that astronomical calculating method passes through tracker present position obtain entering for the sun
Firing angle degree, while using the actual attitude angle of angular transducer measurement tracking support, then adjustment tracks the actual measurement appearance of support
State angle is consistent with angle of incidence of sunlight degree, realizes that closed loop angle is controlled.Due to astronomical calculating method tracing control by weather and
The influence that optic probe is stained, therefore tracking reliability and applicability are higher.
, it is necessary to the actual attitude angle of detecting and tracking support could complete the sun in astronomical calculating method solar tracking system
Tracing control.The detection technique commonly used in solar tracking system angular surveying at present is mainly rotational potentiometer technology and rotation
Encoder techniques.
Rotational potentiometer is also referred to as angular displacement type variable-resistance transducer, the electricity when the rotary shaft of potentiometer is in diverse location
Position device centre tap is also different from the resistance between two terminations, by definitely turning for the i.e. measurable rotating shaft of the size for measuring resistance
Angle.But rotational potentiometer is a kind of contact type measurement technology, occur that contact electrode weares and teares with swept resistance in long-time use
Phenomenon.The certainty of measurement of rotational potentiometer is usually 0.1%, and for the attitude angle measurement of solar tracking system, maximum is surveyed
Amount error is about positive and negative 0.36 degree, can only meet photovoltaic tracking, it is impossible to meets high-precision smooth heat build-up solar tracking control and requires.
Rotary encoder is a kind of Non-contact Angle Measurement device, is generally worked using photovoltaic principals or electromagnetic principle,
Precision is higher.Rotary encoder is divided into incremental encoder and absolute position formula encoder, and incremental encoder can only export phase
To angle change, sun tracing system generally can not be applied individually to any.The rotating shaft of absolute position formula encoder is in diverse location
When encoder export different codings, by coding can high-precision measuring encoder rotating shaft the anglec of rotation.Absolute position formula
The shortcoming of rotary encoder is expensive, using the cost that can significantly improve in solar tracking system whole tracking system,
It is less economical.
Either rotational potentiometer or rotary encoder, this class angle-measuring equipment is generally all by a measurement apparatus and one
The rotating shaft of individual rotation is constituted, and both are encapsulated in a housing.Measurement apparatus and rotating shaft are connected respectively to rotation when using
In the fixed component and rotatable parts of machinery, the outer corner measurement of rotating machinery is realized.In order to ensure coaxial work, required during installation
Sensor shaft is strictly located on machinery rotation device center, can deform shaft bending when otherwise rotating, and then damages measurement
Device.It is difficult to accomplish with one heart due to strict, generally needs to increase flexible clutch in engineering practice to realize connection, causes to install
Cost is improved and installation is bothered.
Utility model content
The purpose of this utility model is to provide a kind of separate type sun tracing system rotation angular measurement based on magnetic field detection
Device, solves the problems, such as that existing solar tracking support rotational angle measurement apparatus high cost, installation requirement be strict, precision is low.
The technical scheme that the utility model is used is that a kind of separate type sun tracing system based on magnetic field detection rotates
Angle measuring device, including the first mark magnet and the first magnetic field angle sensing for detecting the first mark magnet magnetic line of force direction
Device, has gap between the first mark magnet and the first magnetic field angular sensor.
The characteristics of the utility model, also resides in：
First magnetic field angular sensor includes the first magnetic field sensing element, and the first magnetic field sensing element is connected to first
Power supply and the first digital processor, the first power supply are connected with the first digital processor.
First magnetic field angular sensor is arranged on the fixed support affixed with tracking support ground, the first mark magnet peace
On the central shaft of tracking holder pivots mechanism.
First mark magnet is arranged on the fixed support affixed with tracking support ground, the first magnetic field angular sensor peace
On the central shaft of tracking holder pivots mechanism.
Also include the second mark magnet and for detecting the second the second magnetic field angle sensing for marking magnet magnetic line of force direction
Device, has gap between the second mark magnet and the second magnetic field angular sensor.
Second magnetic field angular sensor includes the second magnetic field sensing element, and the second magnetic field sensing element is connected to second
Power supply and the second digital processor, the second power supply are connected with the second digital processor.
Second mark magnet is arranged on the primary drive shaft of the upper level deceleration system of rotary drive mechanism, the second magnetic field
Angular transducer is arranged on the support concentric with rotary shaft.
The beneficial effects of the utility model are：A kind of separate type sun tracing system based on magnetic field detection of the utility model
Rotational angle measurement apparatus, realize cheap individual pen absolute value type angular surveying requirement；The measurement apparatus of angle measurement system with
Measured using magnetic coupling between Magnetic Measurement primary standard substance, there is no the wear problem in long-term use；Magnetic coupling measurement need not
The servicing units such as shaft joint, installation is convenient；Two-stage individual pen absolute value type angle measurement unit can improve measurement by combining
Precision, meets high-precision smooth heat build-up tracking system measurement request.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model separate type sun tracing system rotational angle measurement apparatus；
Fig. 2 is the first magnetic field angular sensor in the utility model separate type sun tracing system rotational angle measurement apparatus
Structural representation；
Fig. 3 is the second magnetic field angular sensor in the utility model separate type sun tracing system rotational angle measurement apparatus
Structural representation；
The combination of two-stage measuring system signal is shown in Fig. 4 the utility model separate type sun tracing system rotational angle measurement apparatus
It is intended to；
Fig. 5 is magnetic field angular sensor work original in the utility model separate type sun tracing system rotational angle measurement apparatus
Reason figure.
In figure, 1. first magnet is marked, 2. the first magnetic field angular sensor, 3. fixed support, 4. track holder pivots machine
Structure, 5. tracks carrier, 6. rotation support, 7. the second mark magnet, 8. the second magnetic field angular sensor, 9. primary drive shaft,
10. the first magnetic field sensing element, 11. first digital processors, 12. first power supplies, 13. rotation central axis, 14. magnetic force
Line, 15. second magnetic field sensing elements, 16. second digital processors, 17. second power supplies.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection of the utility model, structure is as schemed
Shown in 1, including the first mark magnet 1 and the first magnetic field angular sensor for detecting the first mark magnet 1 magnetic line of force direction
2, there is gap between the first mark magnetic field angular sensor 2 of magnet 1 and first, do not contact each other, carry out coupling by magnetic field
Detection is closed, without accessory structures such as shaft couplings.
As shown in Fig. 2 the first magnetic field angular sensor 2 includes the first magnetic field sensing element 10, the first magnetic field sensing element
10 are connected to the first power supply 12 and the first digital processor 11, the first power supply 12 and the first digital treatment
Device 11 is connected.
Embodiment 1
First magnetic field angular sensor 2 is arranged on the fixed support 3 affixed with tracking support ground i.e. remains stationary, the
One mark magnet 1 is arranged on the central shaft of tracking holder pivots mechanism 4 with holder pivots.Tracking when tracking support and thereon
The first mark synchronous rotary of magnet 1 when carrier 5 is around rotation 6 rotation of support, magnetic line of force direction changes, the first magnetic field angle
Sensor 2 tracks the absolute rotation angle of support by determining magnetic line of force orientation measurement.
Embodiment 2
The installation site of first 1 and first magnetic field angular sensor of mark magnet 2 in embodiment 1 is exchanged, i.e., the first mark
Magnet 1 is arranged on the fixed support 3 affixed with tracking support ground, and remains stationary, the first magnetic field angular sensor 2 is arranged on
With holder pivots on the central shaft of tracking holder pivots mechanism 4.
Embodiment 1 and embodiment 2 realize low precision tracking angular surveying.
Embodiment 3
On the basis of above-described embodiment 1 or embodiment 2, the second mark magnet 7 is also equipped with and for detecting second
Second magnetic field angular sensor 8 in mark magnet 7 magnetic line of force direction, the second mark magnet 7 and second magnetic field angular sensor 8 it
Between have gap, do not contact.
As shown in figure 3, the second magnetic field angular sensor 8 includes the second magnetic field sensing element 15, the second magnetic field sensing element
15 are connected to the second power supply 17 and the second digital processor 16, the second power supply 17 and the second digital treatment
Device 16 is connected.
Second mark magnet 7 is arranged on the primary drive shaft 9 of the upper level deceleration system of rotary drive mechanism, the second magnetic
Field angular transducer 8 is arranged on the support concentric with rotary shaft.When primary drive shaft 9 drives second to mark magnet 7 to rotate, the
Two magnetic field angular sensors 8 mark the angle position of the magnetic line of force angle detecting primary drive shaft 9 of magnet 7 by measure second.
Embodiment 3 realizes two-stage type high precision tracking angular surveying.
On embodiment 3, there is a speed reducing ratio N, such as Fig. 4 between primary drive shaft 9 and tracking holder pivots mechanism 4
Shown, after primary drive shaft 9 turns over N circles, tracking holder pivots mechanism 4 is rotated by 360 ° (N=8 in Fig. 3).The anglec of rotation is surveyed
Amount device uses the second magnetic field angle on the basis of the output signal of the first magnetic field angular sensor 2 in its different measured zone
The signal for spending sensor 8 is finely divided to measurement result, so as to improve overall measurement accuracy.
Such as：When tracking holder pivots mechanism 4 spends in 45-90, rotational angle measurement apparatus can determine whether the work of primary rotary shaft 9
Make in the 2nd circle (90-135 degree works in the 3rd circle by that analogy), primary rotary shaft 9 does the rotation of 0-360 degree and is equivalent to tracking support
The angle of rotating mechanism 4 changes from 45-90 degree, in the case where system does not have gash spacing error, it is assumed that the angle of primary drive shaft 9 is surveyed
Accuracy of measurement 0.1%, worst error is positive and negative 0.36 degree, in this angular error conversion to next stage tracking branch frame transmission mechanism 4
Then angular error is then positive and negative 0.045, and overall precision is 0.0125%, and precision improves 8 times of (speed reducing ratio phases being driven with two-stage
Together).
The first mark magnet 1 is as shown in Figure 5 with the measuring principle of the first magnetic field angular sensor 2 in the utility model：The
One mark magnet 1 is coaxially arranged with the first magnetic field sensing element 10, when the first mark magnet 1 rotates around rotation central axis 13, its
The magnetic line of force 14 in magnetic field is also rotated with, and the first magnetic field sensing element 10 detects the change of magnetic field angle, digital by first
Output angle measurement signal after the operational analysis of processor 11.
The measuring principle of the second mark magnetic field angular sensor 8 of magnet 7 and second is ibid.
A kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection of the utility model, realize honest and clean
The individual pen absolute value type angular surveying requirement of valency；Magnetic is used between the measurement apparatus and Magnetic Measurement primary standard substance of angle measurement system
Field coupling measurement, does not have the wear problem in long-term use；Magnetic coupling is measured without the servicing units such as shaft joint, installation
It is convenient；Two-stage individual pen absolute value type angle measurement unit can by combine improve certainty of measurement, meet high-precision smooth heat build-up with
The requirement of track systematic survey.
Claims (6)
1. a kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection, it is characterised in that including first
Mark magnet (1) and the first magnetic field angular sensor (2) for detecting first mark magnet (1) magnetic line of force direction, the first mark
There is gap between note magnet (1) and the first magnetic field angular sensor (2)；
First magnetic field angular sensor (2) includes the first magnetic field sensing element (10), the first magnetic field sensing element (10) point
The first power supply (12) and the first digital processor (11), the first power supply (12) and the first digital place are not connected with
Reason device (11) connection.
2. a kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection according to claim 1,
Characterized in that, first magnetic field angular sensor (2) is on the fixed support (3) affixed with tracking support ground,
First mark magnet (1) is on the central shaft of tracking holder pivots mechanism (4).
3. a kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection according to claim 1,
Characterized in that, first mark magnet (1) installed in the tracking affixed fixed support (3) of support ground on, described the
One magnetic field angular sensor (2) is on the central shaft of tracking holder pivots mechanism (4).
4. a kind of separate type sun tracing system rotation angular measurement based on magnetic field detection according to Claims 2 or 3 is filled
Put, it is characterised in that also including the second mark magnet (7) and for detecting that second marks the second of magnet (7) magnetic line of force direction
Magnetic field angular sensor (8), has gap between the second mark magnet (7) and the second magnetic field angular sensor (8).
5. a kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection according to claim 4,
Characterized in that, second magnetic field angular sensor (8) includes the second magnetic field sensing element (15), the second magnetic field sensing element
(15) the second power supply (17) and the second digital processor (16), the second power supply (17) and the second number are connected to
Word formula processor (16) is connected.
6. a kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection according to claim 5,
Characterized in that, primary drive shaft of second mark magnet (7) installed in the upper level deceleration system of rotary drive mechanism
(9) on, the second magnetic field angular sensor (8) is on the support concentric with rotary shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621022541.5U CN206300608U (en) | 2016-08-30 | 2016-08-30 | A kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621022541.5U CN206300608U (en) | 2016-08-30 | 2016-08-30 | A kind of separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection |
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| CN206300608U true CN206300608U (en) | 2017-07-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441080A (en) * | 2016-08-30 | 2017-02-22 | 赵跃 | Separate solar tracking system rotation angle measurement apparatus based on magnetic field detection |
-
2016
- 2016-08-30 CN CN201621022541.5U patent/CN206300608U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441080A (en) * | 2016-08-30 | 2017-02-22 | 赵跃 | Separate solar tracking system rotation angle measurement apparatus based on magnetic field detection |
| CN106441080B (en) * | 2016-08-30 | 2019-07-05 | 赵跃 | Separate type sun tracing system rotational angle measurement apparatus based on magnetic field detection |
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