CN2525491Y - Contrast marking device for tracking and non-tracking measuring sun radiation - Google Patents

Abstract

The utility model relates to an optical radiation energy measurement technology, which is a tracking and non-tracking measurement solar radiation comparison calibration device. Composed of a rotating platform, a sun tracker, an electric control box, a receiver, a scanning turntable and a controller, the measuring instrument for total solar radiation of the utility model generally adopts the method of tracking and measuring solar radiation, but in order to reduce mass and reduce power consumption in aerospace , Improve reliability and use non-tracking measurement methods. The utility model solves the problem of comparing and calibrating the solar radiation for the non-tracking measuring instrument, uses non-tracking and tracking to measure the solar radiation and compares the solar radiation, measures the difference between the non-tracking measurement method and the theoretical value, and gives the non-tracking measurement method. The correction coefficient of the tracking measurement method is compared with the two methods on the ground to improve the measurement accuracy of the non-tracking method, and provide a tracking and non-tracking measurement solar radiation comparison calibration device suitable for the application of the aerospace field for the non-tracking measurement method.

Description

Comparison calibration device for tracking and non-tracking measurement of solar radiation

Technical field: The utility model relates to the technical field of optical radiation energy measurement, and relates to an improvement of a tracking and measuring solar radiation comparison and calibration device.

Background technology: Before the present utility model, there were many devices used for solar radiation measurement, and they generally used tracking measurement, so it was required to use tracking measurement comparison calibration device to calibrate the solar radiation measurement device, and the closest to the utility model has been The existing technology is a tracking measurement comparison calibration device produced by Changchun Optical Machinery, as shown in Figure 1: a two-axis rotating platform 1, a sun tracker 2, a rotation controller 3, a receiver 4 and its electric control box 5, a receiving Device 6 and its electric control box 7. The optical axes of the sun tracker 2, the receiver 4 and the receiver 6 are parallel, and they are all installed on the two-axis rotating platform 1. The sun tracker 2 automatically tracks the sun, so that the two-axis rotating platform 1 has been rotating two-dimensionally to ensure sun tracking The optical axis of the device 2 is parallel to the sunlight, and since the receivers 4 and 6 are coaxial with the sun tracker 2, the receivers 4 and 6 have been tracking the sun for comparison calibration measurement of solar radiation.

The main disadvantage of this kind of comparison and calibration device is: since the receiver and sunlight are also coaxial, the relationship between the receiver and sunlight is equivalent to the comparison and calibration between tracking measurement and tracking measurement. The shortcomings make the structure complex, reduce reliability, heavy mass, and high power consumption, so tracking measurement is not suitable for application in the aerospace field.

Details: In order to overcome the above-mentioned shortcomings, the purpose of this utility model is to adopt a non-tracking measurement method to solve the problem that the tracking measurement method is not suitable for the aerospace field. The utility model is shown in Figure 2: it includes a two-axis rotary platform 1, Sun tracker 2, electric control box 3, receiver 4, electric control box 5, receiver 6, electric control box 7, scanning turntable 8 and its controller 9 and microcomputer 10, sun tracker 2, receiver 4 and scanning The turntable 8 is installed on the two-axis turntable 1, the receiver 6 is installed on the scanning turntable 8, the central axis of the scanning range of the scanning turntable 8 is parallel to the optical axis of the receiver 6 and the receiver 2, and the scanning turntable 8 is in the range of ±θ The scan is performed at the angular velocity of the spacecraft. θ is the half angle of field of view of the receiver 6, which is half of the opening angle of the field of view of the receiver 6 to the center of the receiver. The motor input end of the two-axis rotary platform 1 is connected with the output end of the electric control box 3 with wires, the output end of the sun tracker 2 is connected with the input end of the electric control box 3 with wires, and the output end of the receiver 4 is connected with the electric control box 5. The input end is connected with a wire, the output end of the receiver 6 is connected with the input end of the electric control box 7 with a wire, the output end of the electric control box 5 and the electric control box 7 is connected with the input end of the microcomputer 10 with a wire, and the scanning turntable 8 The input end of the controller is connected with the output end of the controller 9 with wires.

The utility model uses tracking and non-tracking to compare and calibrate the solar radiation, that is, the receiver 4 and the receiver 6 perform the solar radiation data comparison and calibration measurement: when the solar tracker 2 automatically tracks the sun, the two-axis rotation platform 1 The receiver 4 and other components have been rotating two-dimensionally within the range of 2π solid angle, ensuring that the optical axis of the sun tracker 2 and the receiver 4 is parallel to the sunlight, and the receiver 6 and the scanning turntable 8 are located on the two-axis rotating platform 1 Make a smaller range of one-dimensional rotation or two-dimensional rotation. While the receiver 4 tracks the sun for calibration measurement, the receiver 6 scans at a certain angular velocity and a certain curve, and the sun crosses the field of view of the receiver 6 at a certain angular velocity, so as to perform two types of sun-tracking measurement and non-sun-tracking measurement Method comparison. When the position of the axis in the scanning range of the scanning turntable 8 and the receiver 6 rotates -θ is -10 degrees, that is, the receiver 6 rotates -10 degrees relative to the receiver 4, then the receiver 4 and the receiver 6 receive sunlight simultaneously and The sunlight is measured separately, the receiver 4 has been tracking and measuring the sun, and the receiver 6 scans the sun at a pre-set angular velocity equal to that of the spacecraft, from -θ to +θ, that is, from -10 degrees Scanning to +10 degrees means that the sun sweeps across the field of view of the receiver 6 at the angular velocity of the spacecraft. The receiver 6 realizes that the simulated spacecraft does not perform tracking measurement on the sun when it is running in orbit, that is, non-tracking measurement. The receiver 4 and the receiver 6 finish the measurement at the same time, the receiver 4 and the receiver 6 respectively obtain the data of two sets of solar radiation tracking measurement and non-tracking measurement, and the two sets of solar radiation are given by the electric control box 5 and the electric control box 7 The data are respectively sent to the microcomputer 10 for comparison, so that the comparison of the solar radiation data of the tracking measurement receiver 4 and the non-tracking measurement receiver 6 is realized, thereby achieving the purpose of tracking and non-tracking calibration of the solar radiation measurement device. When the position of the axis in the scanning range of the scanning turntable 8 and the receiver 6 does not rotate, the comparison and calibration of the solar radiation data between the tracking measurement and the tracking measurement can be realized.

The positive effects of the utility model: the instrument for measuring total solar radiation is an absolute radiometer, which generally adopts the method of tracking and measuring solar radiation, but in aerospace, non-tracking measurement method is adopted in order to reduce quality, reduce power consumption and improve reliability. The utility model solves the problem of comparing and calibrating the solar radiation for the non-tracking measuring instrument, uses non-tracking and tracking to measure the solar radiation and compares the solar radiation, measures the difference between the non-tracking measurement method and the theoretical value, and gives the non-tracking measurement method. The correction coefficient of the tracking measurement method is compared with the two methods on the ground to improve the measurement accuracy of the non-tracking method, and provide a tracking and non-tracking measurement solar radiation comparison calibration device suitable for the application of the aerospace field for the non-tracking measurement method.

Description of drawings:

Fig. 1 is the structural representation of prior art;

Fig. 2 is a structural representation of the utility model and is also a summary accompanying drawing;

Fig. 3 is the sectional view of the partial structure of the utility model;

Detailed ways:

The best embodiment is shown in Fig. 2 and Fig. 3 by two-axis turning platform 1, sun tracker 2, electric control box 3, receiver 4, electric control box 5, receiver 6, electric control box 7, scanning turntable 8 and Its controller 9 and microcomputer 10 are composed, and the two-axis rotating platform 1 is made of metal, and is composed of two mutually moving horizontal rotating platforms, a horizontal rotating shaft, a pitching rotating shaft, a pitching rotating bracket and two motors, and at the end of the horizontal rotating shaft of the motor The shaft ends of the pitch and pitch shafts can be equipped with gear shifting and worm gear shifting structures respectively; the sun tracker 2 uses a four-quadrant detector to form two bridge circuits; the drive circuit in the electric control box 3 controls the two bridge circuits according to the positive and negative output signals of the bridge The horizontal or pitch rotation of the pivot platform 1; the receiver 4 and the receiver 6 adopt black body receiving chambers respectively; the electric control box 5 and the electric control box 7 are the sampling circuits of the receiver 4 and the receiver 6; the scanning turntable 8 is made of metal Become; Controller 9 adopts drive circuit to make; Microcomputer 10 adopts common personal computer.

Claims (1)

1. Tracking and non-tracking solar radiation comparison and calibration device, including a two-axis rotating platform 1, a sun tracker 2, an electric control box 3, a receiver 4, and an electric control box 5, and is characterized in that: it also includes a receiver 6 , electric control box 7, scanning turntable 8 and its controller 9 and microcomputer 10, sun tracker 2, receiver 4, scanning turntable 8 are all installed on the two-axis turntable 1, receiver 6 is installed on the scanning turntable 8, The central axis of the scanning range of the scanning turntable 8 is parallel to the optical axis of the receiver 6 and the receiver 2, and the scanning turntable 8 scans at a certain angular velocity within the field angle ± θ range of the receiver 6, and the output terminal of the receiver 6 is connected to the electric The input end of control box 7 is connected with wire, and the output end of electric control box 5 and electric control box 7 is connected with the input end of microcomputer 10 with wire, and the input end of scan turntable 8 is connected with controller 9 output end with wire.