Calibration method and calibration device for red light treatment equipment

Abstract

The invention relates to the technical field of calibration equipment, in particular to a calibration method and device for red light treatment equipment, and the method comprises the following steps: S1, configuring a calibration environment: the temperature is 10-40 DEG C, and the relative humidity is 30-75%; s2, selecting the effective red light irradiance as a main metering characteristic, measuring the relative error of the effective red light irradiance indicating value and determining the expansion uncertainty of the effective red light irradiance indicating value; and S3, setting a re-calibration time interval not greater than one year to re-calibrate the red light treatment equipment. According to the invention, parameters such as effective red light irradiation relative indication error, uniformity, stability, time metering error, noise and the like can be calibrated, value traceability is provided, and the method has reliability and effectiveness.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of calibration equipment, in particular to a calibration method and calibration device of red light treatment equipment. BACKGROUND

[0002] The red light treatment instrument is a new type of light therapy equipment that can be applied to hospitals and families. Its basic principle is to use red visible light waveband of 600 to 700 nanometers. This waveband has a deep penetration into the human body and better therapeutic effect. The red light treatment instrument is manufactured for different selective absorption characteristics. It can promote the protein solidification of diseased tissue, improve local blood circulation, enhance immune function, promote local tissue metabolism, and produce a series of benign reactions in a short period of time.

[0003] The quality of the red light treatment equipment affects the treatment results and needs to be effectively controlled. The quality control of equipment of various manufacturers is different, and it is impossible to trace the source, which causes trouble to the users. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a calibration method and calibration device of red light treatment equipment. The relative indication error, uniformity, stability, time measurement error and noise of effective red light irradiation are calibrated, the value traceability is provided, and the reliability and effectiveness are provided.

[0005] The present application is realized by the following technical solutions:

[0006] A calibration method of red light treatment equipment is provided, comprising the following steps:

[0007] S1, configure the calibration environment: temperature 10-40℃, relative humidity 30-75%;

[0008] S2, select effective red light irradiance as the main measurement characteristic, measure the relative error of effective red light irradiance indication value and determine its expanded uncertainty;

[0009] Select the minimum output setting, maximum output setting and manufacturer specified output setting of the red light treatment equipment as the calibration point, start the red light treatment equipment, select the output value, and use the irradiance meter to measure the effective red light irradiance value at at least 9 uniformly distributed points on the effective irradiation surface, each point is measured c times,

[0010] According to formula (1), the relative indication error ΔE of effective red light irradiance is calculated;

[0011]

[0012] In the formula, E is the nominal value of the effective red light irradiance specified by the manufacturer; is the average value of the measured value of the effective red light irradiance;

[0013] The combined sample standard deviation s is calculated according to formula (2) p ;

[0014]

[0015] Where: m is the number of measurement points; n is the number of measurements for each measurement point; E kj is the measurement value of the jth measurement of the kth measurement point; is the arithmetic mean of the measurement values of the kth measurement point;

[0016] The standard uncertainty u introduced by repeatability is calculated A = c * s p ; c is the number of measurements for each point;

[0017] The standard uncertainty introduced by the irradiance meter is calculated is the average value of the measured irradiance, and σ is the maximum permissible error of the irradiance meter;

[0018] The combined standard uncertainty u is calculated according to formula (3) c ;

[0019]

[0020] The expanded uncertainty U is calculated with a coverage factor k = 2 rel = 2u c ;

[0021] S3, set the recheck time interval of no more than 1 year to recheck the red light treatment equipment.

[0022] Further, in step S1, the main metrological characteristics also include the uniformity of the effective red light irradiance;

[0023] At the maximum output setting, the effective red light irradiance values of each uniformly distributed point are measured, and the uniformity G is calculated according to formula (4)

[0024]

[0025] Where: E min and E max are the minimum and maximum values of the effective red light irradiance measurement values at each measurement point, respectively;

[0026] Further, in step S1, the main metrological characteristics also include the instability of the effective red light irradiance;

[0027] Start the output under the maximum output setting, measure the effective red light irradiance value of the center point after 5 min, measure every 5 min, a total of n times, calculate the instability S of the effective red light irradiance according to formula (5) t .

[0028]

[0029] In the formula: n is the number of measurements; E i is the effective red light irradiance value of the ith measurement; E max is the maximum value of E i ; E min is the minimum value of E i ;

[0030] Further, in step S1, the main metrological characteristics also include the time value relative error;

[0031] Set the red light treatment equipment timer to the maximum value, measure the time with a stopwatch, and calculate the time value relative error according to formula (6).

[0032]

[0033] Δt is the time relative value error; t s is the time setting value; t is the time measured value;

[0034] Further, in step S1, the main metrological characteristics also include the noise size;

[0035] The red light treatment equipment starts output under the maximum output setting, and uses a sound level meter to measure the A-weighted noise at a distance of 1m in front, back, left and right, and takes the maximum value as the noise measurement value.

[0036] A calibration device applying a calibration method of a red light treatment equipment, comprising a base, an irradiation platform and an irradiation measurement module, the irradiation platform is movably connected with the base through a displacement mechanism, a circular irradiation area is arranged on the irradiation platform, and a plurality of measurement points are uniformly arranged in the irradiation area, and a measurement module is connected at each measurement point through a quick mounting mechanism, the quick mounting mechanism comprises a positioning column and a plug-in sleeve, the lower end of the positioning column is fixed on the irradiation platform, a fixing groove is formed in the upper end face of the positioning column, and two clamping grooves symmetrical about the fixing groove are formed on the circumferential surface of the positioning column; the upper end of the plug-in sleeve is connected with the measurement module, a pin shaft capable of being clamped with the fixing groove is arranged in the inner cavity of the plug-in sleeve, a plurality of through holes are uniformly arranged on the circumferential surface of the plug-in sleeve, and a plurality of balls capable of cooperating with the clamping grooves are movably arranged in the through holes, and a locking sleeve is slidably sleeved outside the plug-in sleeve, and the locking sleeve is used to push the balls into the clamping grooves.

[0037] Further, the lower end inner wall of the locking sleeve is recessed with an annular groove for avoiding the balls, and the top of the annular groove is chamfered.

[0038] Further, the upper part of the plug-in sleeve is circumferentially formed with a step, and a retaining ring is arranged above the step, and the top of the locking sleeve slides between the step and the retaining ring.

[0039] Further, the displacement mechanism comprises a vertical plate vertically connected with the base, an X-axis displacement mechanism is installed on the vertical plate, the X-axis displacement mechanism comprises a sliding block X and a linear module X capable of driving the sliding block X to move laterally, a Z-axis displacement mechanism is installed on the sliding block X, the Z-axis displacement mechanism comprises a sliding block Z and a linear module Z capable of driving the sliding block Z to move vertically, a Y-axis displacement mechanism is installed on the sliding block Z, the Y-axis displacement mechanism comprises a sliding block Y and a linear module Y capable of driving the sliding block Y to move longitudinally, and the sliding block Y is connected with the irradiation platform.

[0040] The linear module X comprises a lateral bottom plate, a lateral lead screw is rotatably installed on the lateral bottom plate through a support, and two sliding rods parallel to each other are fixed on both sides of the lateral lead screw in the length direction of the lateral lead screw, one end of the lateral lead screw is connected with a lateral motor, the lateral lead screw penetrates through the sliding block X and is threadedly connected with the sliding block X, and the two sliding rods penetrate through the sliding block X and are slidably connected with the sliding block X.

[0041] The linear module Z comprises a vertical bottom plate, a vertical lead screw is rotatably installed on the vertical bottom plate through a support, and two sliding rods parallel to each other are fixed on both sides of the vertical lead screw in the length direction of the vertical lead screw, one end of the vertical lead screw is connected with a vertical motor, the vertical lead screw penetrates through the sliding block Z and is threadedly connected with the sliding block Z, and the two sliding rods penetrate through the sliding block Z and are slidably connected with the sliding block Z.

[0042] The linear module Y comprises a longitudinal bottom plate, a longitudinal lead screw is rotatably installed on the longitudinal bottom plate through a support, and two sliding rods parallel to each other are fixed on both sides of the longitudinal lead screw in the length direction of the longitudinal lead screw, one end of the longitudinal lead screw is connected with a longitudinal motor, the longitudinal lead screw penetrates through the sliding block Y and is threadedly connected with the sliding block Y, and the two sliding rods penetrate through the sliding block Y and are slidably connected with the sliding block Y.

[0043] The present application has the following advantages:

[0044] The present application can calibrate the relative indication error, uniformity, stability, time measurement error and noise of effective red light irradiation, provide value traceability, and has reliability and effectiveness. The online calibration of the parameters of the in-use red light therapeutic instrument in the hospital can be realized, and reliable support for the quality of infrared treatment is provided.

[0045] The calibration device can adjust the position of the irradiation platform through the displacement mechanism, adjust the irradiation platform to the effective irradiation area of the red light treatment equipment, place the measurement sensor in the pre-set measurement point, accurately measure the effective irradiation of the equipment, cooperate with the calibration method to realize accurate measurement, and verify the reliability of the red light treatment equipment. The measurement module and the irradiation platform are detachably connected, different measurement modules can be replaced for measurement, and the convenience of use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 The structure diagram of the calibration device of the present application.

[0047] Figure 2 The structure diagram of the displacement mechanism of the present application.

[0048] Figure 3 The structure diagram of the quick mounting mechanism of the present application.

[0049] Figure 4 The locking working diagram of the quick mounting mechanism.

[0050] Figure 5 The plan view of the irradiation platform of the present application.

[0051] The diagram shows:

[0052] 1, base, 2, irradiation platform, 3, measurement module, 4, vertical plate, 5, X-axis displacement mechanism, 51, sliding block X, 52, linear module X, 6, Z-axis displacement mechanism, 61, sliding block Z, 62, linear module Z, 7, Y-axis displacement mechanism, 8, positioning column, 9, plug-in sleeve, 10, fixed groove, 11, clamping groove, 12, pin shaft, 13, through hole, 14, ball, 15, annular groove, 16, locking sleeve, 17, step, 18, retaining ring, 19, irradiation area, 20, measurement point. DETAILED DESCRIPTION

[0053] In order to clearly illustrate the technical features of the present application, the present application will be described below through specific embodiments.

[0054] Embodiment 1:

[0055] A calibration method of a red light treatment device, comprising the following steps:

[0056] S1, configure the calibration environment: temperature 10-40℃, relative humidity 30-75%;

[0057] S2, select the effective red light irradiance as the main measurement characteristic, measure the relative error of the effective red light irradiance value and determine its expanded uncertainty;

[0058] Select the minimum output setting, maximum output setting and manufacturer specified output setting of the red light treatment device as the calibration point, start the red light treatment device, select the output value, on the effective irradiation surface, use the irradiance meter to measure the effective red light irradiance value at at least 9 uniformly distributed points, each point is measured c times,

[0059] According to formula (1), the relative value error ΔE of the effective red light irradiance is calculated;

[0060]

[0061] E = manufacturer's specified nominal value of effective red light irradiance E = average of the measured values of effective red light irradiance

[0062] Standard uncertainty introduced by measurement repeatability

[0063] Each measurement point was measured 10 times, and the specific measurement data is shown in the following table:

[0064]

[0065]

[0066] The combined sample standard deviation s was calculated according to formula (2) p ;

[0067]

[0068] E = average of the measured values of effective red light irradiance kj E = the jth measurement value of the kth measurement point E = the jth measurement value of the kth measurement point

[0069] The combined sample standard deviation s was calculated according to formula (2) p ≈1.7 mW / cm 2 .

[0070] The standard uncertainty introduced by measurement repeatability u A = c * s p ; c is the number of measurements at each point

[0071] In actual measurement, each point was measured once, so the standard uncertainty introduced by measurement repeatability is:

[0072] u A = 1.7 mW / cm 2 .

[0073] The standard uncertainty introduced by the irradiance meter E = average of the measured values of effective red light irradiance, σ is the maximum allowable error of the irradiance meter

[0074] The maximum allowable error of the irradiance meter is ±10%, and assuming it is uniformly distributed, the standard uncertainty introduced by it is:

[0075]

[0076] The combined standard uncertainty u c was calculated according to formula (3)

[0077]

[0078] After substituting the data respectively, we get u c = 0.07 mW / cm 2 .

[0079] Take the containing factor k = 2, calculate the expanded uncertainty U rel = 2u c = 8.0%.

[0080] S3, set the recheck time interval of no more than 1 year to recheck the red light treatment equipment.

[0081] In step S1, the main metrological characteristics also include the uniformity of the effective red light irradiance;

[0082] Under the maximum output setting, the effective red light irradiance values of each uniformly distributed point are measured, and the uniformity G is calculated according to formula (4);

[0083]

[0084] In the formula: E min and E max are the minimum and maximum values of the effective red light irradiance measurement values at each measurement point, respectively;

[0085] The measurement is carried out by using the measurement module of the irradiance meter, greater than 0.4, indicating that the uniformity of the red light treatment equipment meets the requirements.

[0086] Under the maximum output setting, start the output, and after 5 min, measure the effective red light irradiance value of the center point, measure every 5 min, a total of n times, and calculate the instability S of the effective red light irradiance according to formula (5) t .

[0087]

[0088] In the formula: n is the number of measurements; E i is the effective red light irradiance value of the i-th measurement; E max is the maximum value of E i ; E min is the minimum value of E i ;

[0089] Set the red light treatment equipment timer to the maximum value, measure the time with a stopwatch, and calculate the relative error of the time indication value according to formula (6).

[0090]

[0091] Δt is the relative indication error of time; ts The value is set for time; t is the time measurement value; by calculating the time relative indication error should be within ±2%, then it meets the requirements.

[0092] Further, in step S1, the main metrological characteristics also include noise size;

[0093] The red light treatment device starts output at the maximum output setting, and uses a sound level meter to measure the A-weighted noise at a distance of 1m in front, behind, left and right, and takes the maximum value as the noise measurement value. The noise value should not be greater than 60dB(A).

[0094] Example 2:

[0095] A calibration device for a calibration method of a red light treatment device, comprising a base 1, an irradiation platform 2 and an irradiation measurement module 3, the irradiation platform 2 is movably connected with the base 1 through a displacement mechanism, the irradiation platform 2 is provided with a circular irradiation area 19, and a plurality of measurement points 20 are arranged in the irradiation area 19 in a uniform array, each measurement point 20 is connected with the measurement module 3 through a quick mounting mechanism, as shown in Figure 5 The irradiation area 19 is a circular area, a plurality of arrayed measurement points 20 are pre-set inside the irradiation area 19, each measurement point 20 is correspondingly provided with a positioning column 8, different sizes of irradiation surfaces can be selected according to the irradiation surface of different infrared treatment devices for measuring irradiance, the quick mounting mechanism comprises the positioning column 8 and a plug-in sleeve 9, the lower end of the positioning column 8 is fixed on the irradiation platform 2, one positioning column 8 is arranged on each measurement point 20, a fixed groove 10 is formed on the upper end face of the positioning column 8, two clamping grooves 11 symmetrical about the fixed groove 10 are formed on the circumferential surface of the positioning column 8; the upper end of the plug-in sleeve 9 is connected with the measurement module 3, a pin shaft 12 capable of being clamped with the fixed groove 10 is arranged in the inner cavity of the plug-in sleeve 9, a plurality of through holes 13 are uniformly arranged on the circumferential surface of the plug-in sleeve 9, and a plurality of rolling balls 14 capable of being matched with the clamping grooves 11 are movably arranged in the through holes 13, a locking sleeve 16 is slidably arranged outside the plug-in sleeve 9, and the locking sleeve 16 is used to push the rolling balls 14 to be embedded in the clamping grooves 13.

[0096] The lower end inner wall of the locking sleeve 16 is recessed with an annular groove 15 for avoiding the rolling balls 14, and the top of the annular groove 15 is provided with a chamfer.

[0097] The upper part of the plug-in sleeve 9 is formed with a step 17 in the circumferential direction, and a blocking ring 18 is arranged above the step 17, and the top of the locking sleeve 16 slides between the step 17 and the blocking ring 18.

[0098] The displacement mechanism comprises a vertical plate 4 connected perpendicularly to the base 1, the vertical plate 4 is provided with an X-axis displacement mechanism 5, the X-axis displacement mechanism comprises a sliding block X51 and a linear module X52 capable of driving the sliding block X51 to move laterally, the sliding block X51 is provided with a Z-axis displacement mechanism 6, the Z-axis displacement mechanism comprises a sliding block Z61 and a linear module Z62 capable of driving the sliding block Z61 to move vertically, the sliding block Z61 is provided with a Y-axis displacement mechanism 7, the Y-axis displacement mechanism 7 comprises a sliding block Y and a linear module Y capable of driving the sliding block Y to move longitudinally, and the sliding block Y is connected with the irradiation platform 2.

[0099] In use, the calibration device can realize the movement of the irradiation platform 2 in the X-axis, Y-axis and Z-axis directions by controlling the linear module X52, the linear module Y and the linear module Z62, so that the irradiation platform 2 can be adjusted to the effective irradiation area below the infrared treatment device, and the irradiation area 19 on the irradiation platform 2 falls into the area, the corresponding measurement module 3 is installed on the measurement point 20 through the quick mounting mechanism, and the irradiation parameters at the corresponding measurement point 20 are obtained by using the measurement module 3 respectively, according to different requirements, the data can be measured multiple times, and the irradiation parameters obtained can be calculated to obtain the size of the indication error of the effective irradiance by using the calculation mode provided by the above calibration method.

[0100] In installation, the locking sleeve 16 is first lifted upward to contact the stop ring 18, and the positioning column 8 is inserted into the plug-in sleeve 9, at this time, the pin shaft 12 is embedded into the fixed groove 10; the locking sleeve 16 is pushed reversely and moved downward to the step of the plug-in sleeve 9, the chamfer on the annular groove 15 at the bottom of the locking sleeve 16 pushes the ball 14 to move, so that the ball 14 is embedded into the clamping groove 11, and the locking installation of the measurement module 3 is completed.

[0101] When it is necessary to replace the measurement module 3, the locking sleeve 16 is only needed to be lifted upward to contact the stop ring 18, the positioning column 8 pushes the ball 14 to the annular groove 15, and the plug-in sleeve 9 is conveniently taken out, so that the measurement module 3 is quickly replaced.

[0102] Of course, the above description is not limited to the above examples, and the technical features not described in the application can be realized by or using the prior art, which will not be described herein; the above examples and drawings are only used to illustrate the technical solutions of the application and are not limited to the application, the application is described in detail with reference to the preferred embodiments, and those skilled in the art should understand that the changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the application do not deviate from the purpose of the application, and should also belong to the protection scope of the claims of the application.

Claims

1. A calibration method for a red light therapy device, characterized in that: Includes the following steps: S1. Configure the calibration environment: temperature 10~40℃, relative humidity 30~75%; S2. Select effective red irradiance as the main metrological characteristic, measure the relative error of the effective red irradiance indication and determine its expanded uncertainty; Select the minimum output setting, maximum output setting, and manufacturer-specified output setting of the red light therapy device as calibration points. Start the red light therapy device, select the output value, and use a radiometer to measure the effective red light irradiance value at at least 9 evenly distributed points on the effective irradiation surface. Measure each point c times. Calculate the relative indication error of effective red irradiance according to formula (1). ; （1） In the formula: E The nominal value of effective red light irradiance specified by the manufacturer; The average value of the effective red irradiance measurements; Calculate the standard deviation of the merged sample according to formula (2). ; （2） In the formula: The number of measurement points; The number of measurements for each measurement point; —The value of the j-th measurement at the k-th measurement point; —The arithmetic mean of the measurements at the k-th measurement point; Calculate the standard uncertainty u introduced by repeatability A =c*; c is the number of measurements for each point; Calculate the standard uncertainty u introduced by the irradiometer B= ‌ ; The average value, This represents the maximum permissible error of the radiometer. According to formula (3), the combined standard uncertainty u c ; （3） Take the inclusion factor k =2, calculate the expanded uncertainty. ; S3. Set a recalibration interval of no more than 1 year for the red light therapy equipment.

2. The calibration method for the red light therapy device according to claim 1, characterized in that: In step S1, the main metrological characteristics also include the uniformity of effective red light irradiance; Under the maximum output setting, the effective red irradiance value of each uniformly distributed point is measured, and the uniformity G is calculated according to formula (4); （4） In the formula: E min and E max These represent the minimum and maximum values ​​of the effective red irradiance measurements at each measurement point.

3. The calibration method for the red light therapy device according to claim 2, characterized in that: In step S1, the main metrological characteristics also include the instability of effective red irradiance; Start the output at maximum output setting, and measure the effective red irradiance value at the center point after 5 minutes. Measure once every 5 minutes for a total of n measurements. Calculate the instability S of the effective red irradiance according to formula (5). t ; （5） In the formula: For the number of measurements; For the first i The effective red irradiance value measured in this instance; for The maximum value; for The minimum value.

4. The calibration method for the red light therapy device according to claim 3, characterized in that: In step S1, the main metrological characteristics also include the relative error of the time indication; Set the timer of the red light therapy device to the maximum value, measure the time with a stopwatch, and calculate the relative error of the time reading according to formula (6); （6） Δ t This refers to the relative error of the time indication. t s Set a value for the time; t This is a time measurement.

5. The calibration method for the red light therapy device according to claim 4, characterized in that: In step S1, the main measurement characteristics also include noise level; When the red light therapy device is set to maximum output, the A-weighted noise at a distance of 1 m in front, behind, left, and right is measured using a sound level meter, and the maximum value is taken as the noise measurement value.

6. A calibration apparatus for applying the calibration method of the red light therapy device according to claim 5, characterized in that: The device includes a base, an irradiation platform, and an irradiation measurement module. The irradiation platform is movably connected to the base via a displacement mechanism. A circular irradiation area is set on the irradiation platform, and multiple measurement points are evenly arranged in an array within the irradiation area. Each measurement point is connected to the measurement module via a quick-release mechanism. The quick-release mechanism includes a positioning post and a plug-in sleeve. The lower end of the positioning post is fixed to the irradiation platform, and the upper end face of the positioning post is recessed to form a fixing groove. Two symmetrical slots about the fixing groove are formed on the circumference of the positioning post. The upper end of the plug-in sleeve is connected to the measurement module. The inner cavity of the plug-in sleeve is provided with a pin that can engage with the fixing groove. Through holes are evenly opened on the circumference of the plug-in sleeve, and ball bearings that can engage with the slots are movably arranged in the through holes. A locking sleeve is slidably fitted on the outside of the plug-in sleeve, and the locking sleeve is used to push the ball bearings into the slots.

7. The calibration apparatus according to claim 6, characterized in that: The lower end of the locking sleeve has an annular groove recessed on its inner wall to avoid the balls, and the top of the annular groove has a chamfer.

8. The calibration apparatus according to claim 6, characterized in that: The upper circumferential part of the plug sleeve forms a step, and a retaining ring is provided above the step. The top of the locking sleeve slides between the step and the retaining ring.

9. The calibration apparatus according to claim 6, characterized in that: The displacement mechanism includes a vertical plate connected to the base, an X-axis displacement mechanism mounted on the vertical plate, the X-axis displacement mechanism including a slider X and a linear module X that can drive the slider X to move laterally, a Z-axis displacement mechanism mounted on the slider X, the Z-axis displacement mechanism including a slider Z and a linear module Z that can drive the slider Z to move vertically, a Y-axis displacement mechanism mounted on the slider Z, the Y-axis displacement mechanism including a slider Y and a linear module Y that can drive the slider Y to move longitudinally, and the slider Y is connected to the irradiation platform.

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