CN112986187A - Device and method for carrying retroreflection magnitude by lambertian body - Google Patents

Device and method for carrying retroreflection magnitude by lambertian body Download PDF

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CN112986187A
CN112986187A CN202110029339.4A CN202110029339A CN112986187A CN 112986187 A CN112986187 A CN 112986187A CN 202110029339 A CN202110029339 A CN 202110029339A CN 112986187 A CN112986187 A CN 112986187A
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radiation source
measured
spectral sensor
lambertian
lambertian body
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CN112986187B (en
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何华阳
苏文英
王蕊
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Research Institute of Highway Ministry of Transport
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Research Institute of Highway Ministry of Transport
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    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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Abstract

A device and a method for carrying retroreflection magnitude by a Lambertian body belong to the field of traffic safety. The device comprises a measuring radiation source, a spectrum sensor, a space regulator, a bidirectional positioner and a two-dimensional aligner. The spectrum sensor is used for collecting spectrum data of a measuring radiation source and spectrum data of reflected light of the lambertian body, and respectively calculating and regulating a correlated color temperature and a retroreflection magnitude curve of the measured lambertian body under different poses and angle combinations. This patent has utilized the spectral data of measuring radiation source itself and the spectral data's after being reflected by the lambertian body change, obtains the retroreflection quantity value that the lambertian body bore. This patent has carried out automatically regulated to the correlated color temperature of measuring the radiation source to guarantee the accuracy of measuring result at every turn. This patent uses lambertian body to bear contrary reflective quantity value for contrary reflective quantity value can be preserved for a long time through stable lambertian body.

Description

Device and method for carrying retroreflection magnitude by lambertian body
Technical Field
A device and a method for carrying retroreflection magnitude by a Lambertian body belong to the field of traffic safety.
Background
Traffic safety facilities: mainly comprises a reflective film, a traffic sign, a marking line, a raised road sign, a spike, a contour mark and an induction mark.
Retroreflection value: mainly comprises a retroreflection coefficient, a retroreflection brightness coefficient, a luminous intensity coefficient and the like.
Retroreflection measuring instrument: the measuring instrument mainly comprises a retroreflection mark measuring instrument, a retroreflection mark measuring instrument and a raised road sign measuring instrument.
A retro-reflective standard: mainly comprising signs, marked lines or raised road signs bearing traceable quantities.
Standard substance: carrying a traceable amount of material.
2856K: a standard value, corresponding to the color temperature of CIE standard illuminant a, can be achieved by adjusting the voltage and current.
Photopic function: a recognized function determined by CIE at home and abroad was initially calculated by finding several people to observe the same batch of objects. The instrument is adjusted when leaving factory, so that the matching degree of the instrument and the photopic vision function is within 7 percent.
The number of deaths in traffic accidents has increased in recent years. Statistical data show that the probability of the traffic safety facilities with the retroreflection function and the pedestrian wearing and the traffic accident is 70%. Since the first traffic signs made of retroreflective material were introduced in the united states in 1937, road traffic safety facilities were spotlighted by the great effectiveness of night safety by virtue of their unique retroreflective properties. The traffic accident rate can be greatly reduced by the bright traffic sign lines, wearing clothes and the like. Road traffic safety facilities are designed to give road traffic guidance and to give road traffic guidance by visually recognizing information such as the shape, color, character, and pattern of the road traffic safety facilities by a driver. The road traffic safety facilities mainly comprise road traffic signs, road traffic marking lines, raised road signs and the like, the light reflection principle is based on a retroreflection material which is an optical material with a special structure and can retroreflect light back to a light source, and the main measuring equipment is a retroreflection measuring instrument. The testing principle of retro-reflective gauges is an alternative, relying on standard substances with retro-reflective values.
There is no disclosure of a device and method for using lambertian bodies to carry retroreflective magnitude values, and retroreflective bodies are generally used to carry retroreflective magnitude values. The corresponding devices are retro-reflective measuring standard devices or retro-reflective standards, and the corresponding methods are ratio method, direct luminous intensity method, direct brightness method, and alternative method.
The prior art has the following disadvantages: 1) the retro-reflector has a short lifetime and a large annual variation. 2) Retroreflectors have poor uniformity.
Disclosure of Invention
The device for carrying the retroreflection magnitude by the lambertian body comprises a measuring radiation source, a spectrum sensor, a space regulator, a two-way positioner and a two-dimensional aligner, and a hardware connection diagram is shown in figure 1.
The outer frame 4 is 1 closed cube, the black inside the outer frame is not reflective, external light cannot enter the inside of the outer frame, and the bottom and two sides of the outer frame can be detached when the measured Lambert body is installed; the outer frame is provided with a two-dimensional aligner, and the long edge of the two-dimensional aligner is parallel to the long edge of the upper part of the outer frame; the two-dimensional aligner 5 is provided with a measuring cabinet body 3, a two-way positioner 10 and a placing cabinet body 6; a driving controller 2 is arranged on the measuring cabinet body, a measuring radiation source is arranged on the driving controller, and a diaphragm with adjustable size is arranged at the end part of the right side of the measuring radiation source 1; the driving controller can provide controllable stable voltage and current to drive the measuring radiation source to emit radiation light; the driving controller can receive the spectrum data output by the spectrum sensor; a spectrum sensor is arranged on the bidirectional positioner, and a light sensing surface of the spectrum sensor is vertical to the long edge of the two-dimensional aligner; the bidirectional positioner can control the spectrum sensor, so that the distance between the center of the photosensitive surface of the spectrum sensor and the center of the measuring radiation source is continuously adjustable, and the photosensitive surface of the spectrum sensor and the diaphragm of the measuring radiation source are positioned in the same plane; the bidirectional positioner can control the spectrum sensor 9 to move the spectrum sensor to the right, the photosensitive surface of the spectrum sensor is aligned with the measuring radiation source, the measuring axis passes through the center of the photosensitive surface of the spectrum sensor and the center of the measuring radiation source, and the positioning laser is intersected with the photosensitive surface of the spectrum sensor; a positioning laser and a space adjuster are arranged on the placing cabinet body; the measured Lambertian body is fixed on the space adjuster, so that the measured Lambertian body can rotate along with the space adjuster; the central point of the rotation of the spatial regulator is on the axis of the positioning laser, and the spatial regulator 7 can move to make the central line of the measured Lambertian body coincide with the axis of the positioning laser; the central axis of the measuring radiation source diaphragm is parallel to the long edge of the two-dimensional aligner and passes through the middle point of the measured Lambert body 8; the measuring axis 11 is parallel to the long side of the upper part of the outer frame and is vertical to the sidelines of the left side and the right side of the outer frame.
The device for bearing retroreflection magnitude by the lambertian body consists of a measuring radiation source, a spectrum sensor, a space regulator, a bidirectional positioner, a two-dimensional aligner and the like.
In fig. 3, cs is the initial position or the lower position of the spectrum sensor, and gw is the initial position or the homing state of the measured lambertian body.
In fig. 4, tw is that the measured lambertian body is in a retreating state, and sw is that the spectrum sensor is in an upper state.
The overall technical scheme is realized as follows:
(1) the bottom and two sides of the outer frame are detached, the lambertian body to be measured is arranged on the space adjuster, and the bottom and two sides of the outer frame are arranged.
(2) The device is powered up so that the components preheat.
(3) The driving controller outputs initial voltage and current, lights the measuring radiation source, and waits for the measuring radiation source to stably emit radiation.
(4) As shown in fig. 4, the spatial adjuster drives the measured lambertian body to move vertically downward and deviate from the initial position (the initial position is gw in fig. 3), so that the measured lambertian body is completely unable to be irradiated by the light emitted by the measured radiation source, and the center of the photosensitive surface of the spectrum sensor can be penetrated by the measured axis after the spectrum sensor descends, i.e. the measured lambertian body is in a retreated state (tw in fig. 4).
(5) The spectrum sensor starts to measure and record the stray light in the outer frame.
(6) The spectrum sensor moves towards the placing cabinet body under the driving of the two-way positioner, firstly moves towards the right side along the two-dimensional aligner, when the spectrum sensor moves to the position right above a measured Lambert body, the two-way positioner moves downwards, the spectrum sensor is rotated, the photosensitive surface of the spectrum sensor faces towards the plane where the measuring radiation source is located, the center of the photosensitive surface of the spectrum sensor and the center of the measuring radiation source are located on the same horizontal line, namely, the measured axis passes through simultaneously, the position where the laser and the photosensitive surface of the spectrum sensor are intersected is located, the photosensitive surface of the spectrum sensor faces towards the direction opposite to the irradiation direction of the measuring radiation source, namely, the spectrum sensor is in a sw state.
(7) The spectrum sensor collects the spectrum data of the measuring radiation source and calculates to obtain the correlated color temperature.
(8) And if the correlated color temperature of the measuring radiation source does not meet the requirement, the driving controller changes the voltage and the current, so that the correlated color temperature of the measuring radiation source changes. When the correlated color temperature of the measuring radiation source is too low, the output voltage and current value of the driving controller is increased; when the correlated color temperature of the measuring radiation source is too high, the output voltage current value of the driving controller is turned down. The correlated color temperature requirement is 2856K.
(9) When the correlated color temperature of the measuring radiation source meets the requirements, the spectrum sensor collects the spectrum DATA DATA1 and transmits the DATA to the drive controller.
(10) As shown in cs in fig. 3, the spectrum sensor moves to the lower position, i.e., moves toward the measurement cabinet under the driving of the two-way positioner, so that the photosensitive surface of the spectrum sensor and the diaphragm of the measurement radiation source are in the same plane, and the photosensitive surface of the spectrum sensor faces in the same direction as the irradiation direction of the measurement radiation source.
(11) The lambertian body to be measured is returned under the driving of the space adjuster, as shown in gw of fig. 3, so that the laser emitted by the positioning laser coincides with the center line of the lambertian body to be measured, and the included angle between the long side of the lambertian body to be measured and the horizontal direction is set to be beta.
(12) And b is set as the distance between the midpoint of the diaphragm of the measuring radiation source and the midpoint of the measured Lambert body, and the distance L between the center of the photosensitive surface of the spectrum sensor and the center of the measuring radiation source meets the following requirements under the drive of the bidirectional positioner: and tan theta is equal to b/L, wherein theta is an included angle between a connecting line from the center of the photosensitive surface of the spectrum sensor to the center of the measured Lambert body and a connecting line from the middle point of the diaphragm of the measuring radiation source to the center of the measured Lambert body.
(13) The space adjuster is initialized, so that the long side of the measured lambertian body is parallel to the horizontal direction.
(14) Under the drive of the space regulator, the variation range of the included angle beta between the long side of the lambertian body to be measured and the horizontal direction is (-180 degrees).
(15) B is adjusted correspondingly so that the variation range of theta is (0 DEG to 90 deg).
(16) The spectrum sensor continuously collects the spectrum DATA 2.
(17) After traversing all the angle combinations of the beta and the theta, calculating to obtain a retroreflection magnitude curve of the measured Lambert body, wherein the calculating method comprises the following steps: multiplying DATA1 by a photopic function of the spectrum sensor, and then integrating in a corresponding wavelength range to obtain total flux D1 in the corresponding wavelength range; multiplying DATA2 by a photopic function of the spectrum sensor, and then integrating in a corresponding wavelength range to obtain total flux D2 in the corresponding wavelength range; and dividing the total flux D2 by the total flux D1, multiplying the total flux by the correction number k to obtain a retroreflection magnitude curve corresponding to beta and theta, and drawing to obtain a retroreflection magnitude three-dimensional graph by taking beta as an x axis and theta as a y axis and taking the retroreflection magnitude obtained by calculation as a z axis. When the design value of the measurement area of the instrument used with the standard substance is s1 and the effective area of the standard substance is s2, k is (L × s1)/(s2 × s2 × cos (β -1.05 °)). Wherein 1.05 degrees is the observation angle of the retroreflection measuring instrument using the lambertian body, and beta is the included angle between the long side of the measured lambertian body and the horizontal direction. s1 is given by the instruction of the instrument used with the standard substance, that is, when the instrument used with the standard substance is used for measuring the road traffic marking, the spot area of the illumination beam irradiated on the measured road traffic marking is provided. S2 is the spot area of the standard substance irradiated by the illumination beam when the standard substance is used for calibration.
s1 and s2 can be measured using a vernier caliper or the like.
This patent has realized that it is automatic to bear contrary reflective quantity value to lambertian body.
This patent has fabulous suitability, can bear multiple traffic safety facility luminosity performance such as contrary reflection coefficient, contrary reflection luminance coefficient, luminous intensity coefficient on lambert's body.
The cost of the method is lower than that of the conventional method.
Drawings
FIG. 1 is a schematic diagram of hardware connection of a device for carrying retroreflection magnitude by Lambertian
In fig. 1, 1 is a measuring radiation source, 1-1 is a diaphragm of the measuring radiation source, 2 is a driving controller, 3 is a measuring cabinet, 4 is an outer frame, 5 is a two-dimensional aligner, 6 is a placing cabinet, 7 is a space adjuster, 8 is a measured lambertian body, 9 is a spectrum sensor, 9-1 is a photosensitive surface on the spectrum sensor, 10 is a bidirectional positioner, 11 is a measuring axis, a is a positioning laser, b is a distance between a midpoint of the diaphragm of the measuring radiation source and a midpoint of the measured lambertian body, β is an included angle between a long side of the measured lambertian body and a horizontal direction, β changes along with the rotation of the measured lambertian body, and L is a distance between a center of the photosensitive surface of the spectrum sensor and a center of the measuring radiation source. cs is that the spectrum sensor is in an initial position or a lower position state, and gw is that the measured Lambert body is in the initial position or a homing state. The device can work as shown in figure 1, and can also work by rotating the device by +/-90 degrees.
FIG. 2 is a schematic diagram of the hardware connection of the device for carrying retroreflection magnitude by Lambertian
FIG. 3 is a flow chart of a method and apparatus for supporting retroreflection magnitude with lambertian bodies
FIG. 4 is a schematic view of the position of FIG. 1
FIG. 5 is a schematic view of the position of FIG. 2
Detailed Description
(1) The bottom and both sides of the outer frame were disassembled, the white mean ceramic plate was mounted on the space adjuster, and the bottom and both sides of the outer frame were mounted.
(2) The device is powered up so that the components preheat.
(3) The driving controller outputs initial voltage and current, lights the measuring radiation source, and waits for the measuring radiation source to stably emit radiation.
(4) The space adjuster drives the measured white mean ceramic plate to deviate from the initial position.
(5) The spectrum sensor starts to measure and record the stray light in the outer frame.
(6) The spectrum sensor is driven by the bidirectional positioner to move towards the placing cabinet body, the photosensitive surface of the spectrum sensor is aligned to the measuring radiation source, the center of the photosensitive surface of the spectrum sensor and the center of the measuring radiation source are positioned on the same horizontal line, and the positioning laser is intersected with the photosensitive surface of the spectrum sensor.
(7) The spectrum sensor collects the spectrum data of the measuring radiation source and calculates to obtain the correlated color temperature.
(8) And if the phase difference between the correlated color temperature of the measuring radiation source and the designed color temperature exceeds 6K, the driving controller changes the voltage and the current, so that the correlated color temperature of the measuring radiation source changes. When the correlated color temperature of the measured radiation source is smaller than the design color temperature, the output voltage and current value of the driving controller is increased; when the correlated color temperature of the measuring radiation source is higher than the design color temperature, the output voltage current value of the driving controller is turned down.
(9) When the difference between the correlated color temperature of the measuring radiation source and the design color temperature is not more than 6K, the spectrum sensor collects the radiation source spectrum DATA DATA1 and transmits the radiation source spectrum DATA DATA1 to the driving controller.
(10) The spectrum sensor is reset and moves towards the measuring cabinet under the drive of the bidirectional positioner, so that the photosensitive surface of the spectrum sensor and the diaphragm of the measuring radiation source are in the same plane.
(11) The measured white mean ceramic plate is reset under the driving of the space regulator, so that the laser emitted by the positioning laser coincides with the central line of the measured white mean ceramic plate, and the included angle between the long edge of the measured white mean ceramic plate and the horizontal direction is recorded as beta.
(12) And setting the distance from the midpoint of the diaphragm of the measuring radiation source to the midpoint of the measured white mean value ceramic plate as b, and enabling the distance L between the center of the photosensitive surface of the spectrum sensor and the center of the measuring radiation source to meet the following requirements under the drive of the bidirectional positioner: and b/L is tan1.05 degrees, wherein 1.05 degrees is an included angle between a connecting line from the center of a photosensitive surface of the spectrum sensor to the center of the measured white mean value ceramic plate and a connecting line from the middle point of a diaphragm of the measuring radiation source to the center of the measured white mean value ceramic plate.
(13) The spatial adjuster was initialized so that the long side of the measured white mean ceramic plate was parallel to the horizontal.
(14) Under the drive of the space regulator, the variation range of the included angle beta between the long edge of the measured white mean ceramic plate and the horizontal direction is (80-90 degrees).
(15) The spectrum sensor continuously collects the spectrum DATA 2.
(16) Calculating to obtain a retroreflection value curve of the measured white mean value ceramic plate, wherein the calculating method comprises the following steps: multiplying DATA1 by a photopic function of the spectrum sensor, and then calculating an integral in a wavelength range of 380 nm-780 nm to obtain total flux D1 in the wavelength range of 380 nm-780 nm; multiplying DATA2 by a photopic function of the spectrum sensor, and then integrating in a wavelength range of 380 nm-780 nm to obtain total flux D2 in the wavelength range of 380 nm-780 nm; the total flux D2 is divided by the total flux D1, and the product is multiplied by the correction number k to obtain the retroreflection brightness coefficient of the white mean value ceramic plate.
This patent has utilized the spectral data of measuring radiation source itself and the spectral data's after being reflected by the lambertian body change, obtains the retroreflection quantity value that the lambertian body bore.
This patent has carried out automatically regulated to the correlated color temperature of measuring the radiation source to guarantee the accuracy of measuring result at every turn.
This patent uses lambertian body to bear contrary reflective quantity value for contrary reflective quantity value can be preserved for a long time through stable lambertian body.
The automatic adjustment of the correlated color temperature of the measuring radiation source is realized, in particular to that (7) the spectrum sensor acquires the spectrum data of the measuring radiation source and then calculates to obtain the correlated color temperature, and the process of fast convergence is difficult to realize if the controller is driven to change the voltage current to adjust the correlated color temperature.
The retro-reflection performance of the lambertian body is very weak, a common method, such as using an illuminometer and the like, cannot receive a weak signal, and the method provided by the patent solves the sensing problem of the weak signal from the perspective of total luminous flux.

Claims (2)

1.朗伯体承载逆反射量值的装置，其特征在于：1. The device of Lambertian bearing retroreflection magnitude is characterized in that: 包括测量辐射源、光谱敏感器、空间调整器、双向定位器和二维对准器；外框为1个密闭立方体；外框上安装有二维对准器，二维对准器的长边和外框上部的长边平行；二维对准器上安装测量柜体、双向定位器和放置柜体；测量柜体上安装驱动控制器，驱动控制器上安装测量辐射源，测量辐射源右侧端部装有可调大小的光阑；驱动控制器提供可控的稳定电压电流驱动测量辐射源发出辐射光；驱动控制器接收光谱敏感器输出的光谱数据；双向定位器上安装光谱敏感器，光谱敏感器的感光面垂直于二维对准器的长边；Including measuring radiation source, spectral sensor, space adjuster, bidirectional locator and 2D aligner; the outer frame is a closed cube; the outer frame is installed with a 2D aligner, and the long side of the 2D aligner It is parallel to the long side of the upper part of the outer frame; the measurement cabinet, the bidirectional locator and the placement cabinet are installed on the two-dimensional aligner; the drive controller is installed on the measurement cabinet, and the measurement radiation source is installed on the drive controller. The side end is equipped with an adjustable aperture; the drive controller provides a controllable stable voltage and current to drive the measurement radiation source to emit radiation; the drive controller receives the spectral data output by the spectral sensor; the spectral sensor is installed on the bidirectional positioner , the photosensitive surface of the spectral sensor is perpendicular to the long side of the two-dimensional aligner; 双向定位器可以控制光谱敏感器，使得光谱敏感器的感光面中心到测量辐射源中心之间的距离连续可调，且使得光谱敏感器的感光面和测量辐射源的光阑处于同一个平面内；双向定位器可以控制光谱敏感器，使得光谱敏感器移动到右侧，将光谱敏感器的感光面对准测量辐射源，测量轴线穿过光谱敏感器的感光面中心和测量辐射源中心，且定位激光与光谱敏感器的感光面相交；The bidirectional positioner can control the spectral sensor, so that the distance from the center of the photosensitive surface of the spectral sensor to the center of the measuring radiation source is continuously adjustable, and the photosensitive surface of the spectral sensor and the diaphragm of the measuring radiation source are in the same plane ; The bidirectional positioner can control the spectral sensor, so that the spectral sensor moves to the right, the photosensitive surface of the spectral sensor is aligned with the measurement radiation source, and the measurement axis passes through the center of the photosensitive surface of the spectral sensor and the center of the measurement radiation source, and Position the laser to intersect the photosensitive surface of the spectral sensor; 放置柜体上安装定位激光、空间调整器；空间调整器上固定被测朗伯体，使得被测朗伯体可以随着空间调整器旋转；空间调整器旋转的中心点在定位激光的轴线上，空间调整器可以移动使得被测朗伯体的中线和定位激光的轴线重合；测量辐射源光阑的中轴线平行于二维对准器的长边且穿过被测朗伯体的中点；测量轴线和外框上部的长边平行，和外框左右两侧的边线垂直。The positioning laser and space adjuster are installed on the cabinet; the measured Lambertian body is fixed on the space adjuster, so that the measured Lambertian body can rotate with the space adjuster; the center point of the space adjuster rotation is on the axis of the positioning laser , the spacer can be moved so that the center line of the measured Lambertian body coincides with the axis of the positioning laser; the center axis of the measuring radiation source aperture is parallel to the long side of the two-dimensional aligner and passes through the midpoint of the measured Lambertian body ; The measurement axis is parallel to the long side of the upper part of the outer frame, and perpendicular to the sides of the left and right sides of the outer frame. 2.应用如权利要求1所述装置的方法，其特征在于:2. the method for applying device as claimed in claim 1, is characterized in that: (1)将外框底部和两侧拆卸下来，将被测朗伯体安装到空间调整器上，将外框底部和两侧安装上；(1) Remove the bottom and both sides of the outer frame, install the Lambertian body to be measured on the space adjuster, and install the bottom and both sides of the outer frame; (2)将装置上电，使得各部件预热；(2) Power on the device to preheat the components; (3)驱动控制器输出初始电压电流，点亮测量辐射源，等待测量辐射源稳定发出辐射；(3) Drive the controller to output the initial voltage and current, light up the measurement radiation source, and wait for the measurement radiation source to emit radiation stably; (4)空间调整器带动被测朗伯体向下竖直移动，使得被测朗伯体完全无法被测量辐射源发出的光照射，且光谱敏感器下降后光谱敏感器的感光面中心可以被测量轴线穿过；(4) The space adjuster drives the measured Lambertian body to move vertically downwards, so that the measured Lambertian body cannot be irradiated by the light emitted by the measurement radiation source at all, and the center of the photosensitive surface of the spectral sensor can be irradiated by the light emitted by the measured radiation source. The measurement axis passes through; (5)光谱敏感器开始测量并记录外框内的杂散光；(5) The spectral sensor starts to measure and record the stray light in the outer frame; (6)光谱敏感器在双向定位器的带动下向放置柜体移动，首先沿着二维对准器向右侧移动，待移动到被测朗伯体正上方时，双向定位器向下移动，并旋转光谱敏感器，使得光谱敏感器的感光面朝向正对测量辐射源所在平面，并使得光谱敏感器的感光面中心和测量辐射源中心处于同一水平线上即同时被测量轴线穿过，且定位激光与光谱敏感器的感光面相交的位置，光谱敏感器的感光面朝向和测量辐射源的照射方向相反；(6) The spectral sensor moves toward the placing cabinet under the drive of the bidirectional locator. First, it moves to the right along the two-dimensional aligner. When it moves to the top of the measured Lambertian body, the bidirectional locator moves downward. , and rotate the spectral sensor so that the photosensitive surface of the spectral sensor faces the plane where the measurement radiation source is located, and the center of the photosensitive surface of the spectral sensor and the center of the measurement radiation source are on the same horizontal line, that is, they are simultaneously passed by the measurement axis, and Locate the position where the laser intersects the photosensitive surface of the spectral sensor, and the photosensitive surface of the spectral sensor faces in the opposite direction to the irradiation direction of the measuring radiation source; (7)光谱敏感器采集测量辐射源的光谱数据，计算得到相关色温；(7) The spectral sensor collects the spectral data of the measured radiation source, and calculates the correlated color temperature; (8)若测量辐射源的相关色温不满足要求，则驱动控制器改变电压电流，使得测量辐射源的相关色温发生变化；当测量辐射源的相关色温过低时，调高驱动控制器输出电压电流值；当测量辐射源的相关色温过高时，调低驱动控制器输出电压电流值；(8) If the correlated color temperature of the measured radiation source does not meet the requirements, drive the controller to change the voltage and current, so that the correlated color temperature of the measured radiation source changes; when the correlated color temperature of the measured radiation source is too low, increase the output voltage of the driving controller Current value; when the correlated color temperature of the measured radiation source is too high, reduce the output voltage and current value of the drive controller; (9)当测量辐射源的相关色温满足要求时，光谱敏感器采集光谱数据DATA1并传输到驱动控制器；相关色温的要求就是为2856K；(9) When the correlated color temperature of the measured radiation source meets the requirements, the spectral sensor collects the spectral data DATA1 and transmits it to the drive controller; the requirement for the correlated color temperature is 2856K; (10)光谱敏感器即在双向定位器的带动下向测量柜体移动，使得光谱敏感器的感光面和测量辐射源的光阑处于同一个平面的位置，且光谱敏感器的感光面朝向和测量辐射源的照射方向一致；(10) The spectral sensor moves to the measurement cabinet under the drive of the bidirectional locator, so that the photosensitive surface of the spectral sensor and the diaphragm of the measuring radiation source are in the same plane position, and the photosensitive surface of the spectral sensor faces and The irradiation direction of the measurement radiation source is consistent; (11)被测朗伯体在空间调整器带动下归位，使得定位激光发出的激光与被测朗伯体的中线重合，设被测朗伯体长边与水平方向的夹角为β；(11) The measured Lambertian body is driven by the space adjuster, so that the laser emitted by the positioning laser coincides with the midline of the measured Lambertian body, and the angle between the long side of the measured Lambertian body and the horizontal direction is β; (12)设测量辐射源光阑中点到被测朗伯体中点间的距离为b，在双向定位器的带动下使得光谱敏感器的感光面中心到测量辐射源中心之间的距离L满足如下要求：tanθ＝b/L，其中θ为光谱敏感器的感光面中心到被测朗伯体中心的连线与测量辐射源光阑中点到被测朗伯体中心的连线之间的夹角；(12) Suppose the distance between the midpoint of the measuring radiation source aperture and the midpoint of the measured Lambertian body is b, and the distance L from the center of the photosensitive surface of the spectral sensor to the center of the measuring radiation source is driven by the bidirectional locator. Satisfy the following requirements: tanθ=b/L, where θ is the line connecting the center of the photosensitive surface of the spectral sensor to the center of the measured Lambertian body and the line connecting the midpoint of the measuring radiation source aperture to the center of the measured Lambertian body the included angle; (13)空间调整器初始化，使得被测朗伯体长边平行于水平方向；(13) Initialize the space adjuster so that the long side of the measured Lambertian body is parallel to the horizontal direction; (14)在空间调整器带动下，被测朗伯体长边与水平方向的夹角β变化范围为(-180°～180°)；(14) Driven by the space adjuster, the variation range of the angle β between the long side of the Lambertian body and the horizontal direction is (-180°～180°); (15)对应地调整b，使得θ的变化范围为(0°～90°)；(15) Adjust b accordingly, so that the variation range of θ is (0°～90°); (16)光谱敏感器连续采集光谱数据DATA2；(16) The spectral sensor continuously collects spectral data DATA2; (17)当遍历了β和θ的上述所有角度组合后，计算得到被测朗伯体的逆反射量值曲线，计算方法如下：将DATA1乘以光谱敏感器的明视觉函数后，在对应波长范围求积分，得到对应波长范围的总通量D1；对DATA2乘以光谱敏感器的明视觉函数后，在对应波长范围求积分，得到对应波长范围的总通量D2；总通量D2除以总通量D1，乘上修正数k，即可得到对应β和θ下的逆反射量值曲线，以β为x轴，θ为y轴，计算得到的逆反射量值为z轴，绘制得到逆反射量值三维图形；当标准物质配套使用的仪器，其测量面积设计值为s1，标准物质有效面积为s2，则k＝(L×L×s1)/(s2×s2×cos(β-1.05°))；其中1.05°是使用朗伯体的逆反射测量仪的观测角，β是被测朗伯体长边与水平方向的夹角；s1由标准物质配套使用的仪器说明书给出，即标准物质配套使用的仪器在测量道路交通标线时，照明光束照射在被测道路交通标线上的光斑面积；S2是标准物质配套使用的仪器在使用标准物质进行校准时，照明光束照射在标准物质上的光斑面积。(17) After traversing all the above-mentioned angle combinations of β and θ, the retroreflection value curve of the measured Lambertian body is calculated. The calculation method is as follows: after multiplying DATA1 by the photopic vision function of the spectral sensor, at the corresponding wavelength Integrate the range to obtain the total flux D1 in the corresponding wavelength range; after multiplying DATA2 by the photopic function of the spectral sensor, integrate in the corresponding wavelength range to obtain the total flux D2 in the corresponding wavelength range; divide the total flux D2 by The total flux D1, multiplied by the correction number k, can obtain the retroreflection value curve corresponding to β and θ. With β as the x-axis and θ as the y-axis, the calculated retroreflection value is the z-axis, and the plotted Three-dimensional graph of retroreflection value; when the standard material is used with the instrument, the design value of its measurement area is s1, and the effective area of the standard material is s2, then k=(L×L×s1)/(s2×s2×cos(β- 1.05°)); where 1.05° is the observation angle of the retroreflectometer using the Lambertian body, β is the angle between the long side of the Lambertian body and the horizontal direction; s1 is given by the instrument manual used with the standard material, That is, when the instrument used with the reference material is used to measure the road traffic marking, the spot area of the illumination beam irradiated on the measured road traffic marking; S2 is when the instrument used with the reference material is calibrated with the reference material, the illumination beam is irradiated on The spot area on the standard material.
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