CN110062877B - Control device and color measurement system - Google Patents

Control device and color measurement system Download PDF

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Publication number
CN110062877B
CN110062877B CN201780076237.XA CN201780076237A CN110062877B CN 110062877 B CN110062877 B CN 110062877B CN 201780076237 A CN201780076237 A CN 201780076237A CN 110062877 B CN110062877 B CN 110062877B
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nth
light source
source color
color measurement
driving
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CN110062877A (en
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宫尾庆司
深水智博
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Konica Minolta Inc
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Konica Minolta Inc
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors

Abstract

In the case where color measurement is simultaneously performed in a plurality of color measurement devices, a situation is suppressed in which the electric power supplied from the power supply exceeds the capacity of the power supply when the driving operation is performed in the plurality of color measurement devices. The 1 st to nth color measurement devices perform the 1 st to nth driving jobs, respectively, and perform the 1 st to nth color measurements, respectively. The 1 st to nth driving jobs are driving jobs for preparing the 1 st to nth color measurements, respectively. In the case where the 1 st to nth color measurements are simultaneously performed, the 1 st to nth color measurement devices are controlled so that the timing of performing the 1 st at least one driving operation included in the 1 st to nth driving operations and the timing of performing the 2 nd at least one driving operation different from the 1 st at least one driving operation included in the 1 st to nth driving operations are different.

Description

Control device and color measurement system
Technical Field
The invention relates to a control device and a color measurement system.
Background
The light source color measuring apparatus is an apparatus that measures the brightness and color of a light source.
A light source color measurement system in which a plurality of light source color measurement devices are connected to and controlled by a control device is known. The colorimeter described in patent document 1 is an example thereof. In the colorimeter described in patent document 1, a plurality of probe portions, which are examples of a plurality of light source color measuring devices, are connected to a main body portion, which is an example of a control device, and the plurality of probe portions are controlled by the main body portion (abstract).
The plurality of light source color measurement devices are calibrated as needed. In the colorimeter described in patent document 1, a plurality of stimulus value direct-reading type probe portions connected to a main body portion are corrected based on the measurement results of the spectroscopic probe portions connected to the main body portion (abstract).
In order to correct a plurality of light source color measurement devices with high accuracy, zero correction needs to be performed in the plurality of light source color measurement devices. Therefore, a shutter is provided in each of the plurality of light source color measurement apparatuses. Further, in the case where zero correction is performed in each of the plurality of light source color measurement devices, a driving work of driving the shutter is performed before light source color measurement for zero correction is performed. The zero potential corrected by the zero correction is affected by temperature change. Therefore, in the case where the zero correction is performed in the plurality of light source color measurement apparatuses, it is preferable to perform the zero correction simultaneously in the plurality of light source color measurement apparatuses.
Documents of the prior art
Patent document
Patent document 1: international publication No. 2010/021258
Disclosure of Invention
Problems to be solved by the invention
In the case where the plurality of shutters provided respectively on the plurality of light source color measurement devices are driven by hand, it is not necessary to consider the relationship between the power supplied from the control device to the plurality of light source color measurement devices when the plurality of shutters are driven and the capacity of the power supply.
However, in the case where the shutters are electric shutters, when zero correction is performed simultaneously and a plurality of shutters are driven simultaneously in a plurality of light source color measurement devices, since currents flow simultaneously through a plurality of motors that drive the plurality of shutters, respectively, there is a possibility that the capacity of the power supply is exceeded if there is no margin in the power supplied from the power supply.
This problem also occurs in a case where color measurement other than light source color measurement is performed, a case where light source color measurement other than light source color measurement for zero correction is performed, a case where driving operation other than driving operation for driving the shutter is performed, or the like.
The invention described in the detailed description of the invention aims to solve the problem. The problems to be solved by the invention described in the detailed description of the invention are: in the case where color measurement is simultaneously performed in a plurality of color measurement devices, a situation is suppressed in which the electric power supplied from the power supply exceeds the capacity of the power supply when the driving operation is performed in the plurality of color measurement devices.
Means for solving the problems
In the invention described in the detailed description of the invention, the control device includes an interface, a control unit, and a power supply.
The 1 st to nth color measurement devices are connected to the interface. N is an integer of 2 or more.
The 1 st to nth color measurement devices perform the 1 st to nth driving jobs, respectively, and perform the 1 st to nth color measurements, respectively. The 1 st to nth driving jobs are driving jobs for preparing the 1 st to nth color measurements, respectively.
In the case of simultaneously performing the 1 st to nth color measurements, the control section controls the 1 st to nth color measurement devices so that a timing of performing a 1 st at least one driving operation included in the 1 st to nth driving operations and a timing of performing a 2 nd at least one driving operation included in the 1 st to nth driving operations and different from the 1 st at least one driving operation are different.
The power supply supplies power to the 1 st to nth color measurement devices.
Effects of the invention
According to the invention described in the detailed description of the invention, in the case where color measurement is simultaneously performed in a plurality of color measurement devices, the case where the electric power supplied from the power supply exceeds the capacity of the power supply when the driving operation is performed in the plurality of color measurement devices is suppressed.
Objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.
Drawings
Fig. 1 is a block diagram illustrating a light source color measurement system of embodiment 1, embodiment 2, and embodiment 3, and a comparative example.
Fig. 2 is a diagram showing the configuration of a light source color measurement device provided in the light source color measurement system according to embodiment 1, embodiment 2, and embodiment 3, and a comparative example.
Fig. 3A is a timing chart illustrating the timing of executing each operation in the light source color measurement system of embodiment 1.
Fig. 3B is a timing chart illustrating the timing of performing each operation in the light source color measurement system of embodiment 1.
Fig. 3C illustrates a timing chart of the timing of executing each operation in the light source color measurement system of embodiment 1.
Fig. 3D illustrates a timing chart of the timing of performing each operation in the light source color measurement system of embodiment 1.
Fig. 4 is a timing chart illustrating a temporal change in power supply current in the light source color measurement system of embodiment 1.
Fig. 5A is a timing chart illustrating the timing of executing each operation of comparative example 1.
Fig. 5B is a timing chart illustrating the timing of executing each operation of comparative example 1.
Fig. 5C is a timing chart illustrating the timing of executing each operation of comparative example 1.
Fig. 5D is a timing chart illustrating the timing of executing each operation of comparative example 1.
Fig. 6 is a timing chart illustrating a temporal change in power supply current of comparative example 1.
Fig. 7A is a timing chart illustrating the timing of executing each operation of comparative example 2.
Fig. 7B is a timing chart illustrating the timing of executing each operation of comparative example 2.
Fig. 7C is a timing chart illustrating the timing of executing each operation of comparative example 2.
Fig. 7D is a timing chart illustrating the timing of executing each operation of comparative example 2.
Fig. 8 is a timing chart illustrating a temporal change in power supply current of comparative example 2.
Fig. 9A is a timing chart illustrating the timing of executing each operation of embodiment 2.
Fig. 9B is a timing chart illustrating the timing of executing each operation of embodiment 2.
Fig. 9C is a timing chart illustrating the timing of executing each operation of embodiment 2.
Fig. 9D is a timing chart illustrating the timing of executing each operation of embodiment 2.
Fig. 9E is a timing chart illustrating the timing of executing each operation of embodiment 2.
Fig. 9F is a timing chart illustrating the timing of executing each operation of embodiment 2.
Fig. 10 is a timing chart illustrating a temporal change in power supply current of embodiment 2.
Fig. 11A is a timing chart illustrating timings at which respective operations of comparative example 3 are performed.
Fig. 11B is a timing chart illustrating the timing of executing each operation of comparative example 3.
Fig. 11C is a timing chart illustrating the timing of executing each operation of comparative example 3.
Fig. 11D is a timing chart illustrating the timing of executing each operation of comparative example 3.
Fig. 12 is a timing chart illustrating a temporal change in power supply current of comparative example 3.
Detailed Description
1 embodiment 1
1.1 sequence
Embodiment 1 relates to a light source color measurement system.
1.2 light source color measurement System
Fig. 1 is a block diagram illustrating a light source color measurement system of embodiment 1.
The light source color measurement system 1000 illustrated in fig. 1 is provided with N light source color measurement devices P1、P2、P3、···、PNAnd a control device 1020. N is an integer of 2 or more. The light source color measurement system 1000 may have structural components other than these structural components.
Light source color measuring device P1、P2、P3、···、PNRespectively, light receiving probes, etc., receive light from the light source and measure the light source color. The measurement of the light source color is to take information about the intensity and color of the light from the light source and determine the brightness and color of the light source. Also allowing the light source color measuring device P1、P2、P3、···、PNIs replaced with N object color measurement devices and the light source color measurement system 1000 is replaced with an object color measurement system. N number ofEach of the object color measuring devices receives light from a reflector that reflects light from the light source or a transmitter that transmits light from the light source and measures an object color.
Light source color measuring device P1、P2、P3、···、PNElectrically connected to the control device 1020. Control means 1020 to light source color measuring device P1、P2、P3、···、PNSupplying power to control the light source color measuring device P1、P2、P3、···、PNAnd from the light source color measuring device P1、P2、P3、···、PNMeasurements of the color of the light source are collected.
The control means 1020 sends commands, data and signals to the light source color measurement device P1、P2、P3、···、PNEach of the light source color measuring devices P1、P2、P3、···、PNReceives transmitted commands, data, and signals from the control device 1020. Light source color measuring device P1、P2、P3、···、PNSends commands, data and signals to the control means 1020, the control means 1020 from the light source color measuring device P1、P2、P3、···、PNReceives the transmitted command, data, and signals. Commands and data may take the form of signals.
1.3 light source color measuring device
Fig. 2 is a diagram showing a configuration of a light source color measurement device provided in the light source color measurement system according to embodiment 1.
The light source color measuring apparatus P illustrated in fig. 2 is a light source color measuring apparatus P1、P2、P3、···、PNEach of which is provided with a shutter 1040, a motor 1041, a light sensor 1042, a temperature sensor 1043, and a storage element 1044.
The operation of the light source color measuring device P varies depending on the mode of the light source color measuring device P. Among the modes of the light source color measurement device P, there are a normal measurement mode, a correction mode, and a temperature information output mode.
In the case where the mode of the light source color measurement device P is the normal measurement mode, the light source color measurement device P performs light source color measurement for normal measurement, and transmits data representing the light source color measurement value for normal measurement to the control means 1020. In the light source color measurement in the normal measurement, the optical path 1060 of light incident on the light sensor 1042 used for the light source color measurement is opened by the shutter 1040, light to be measured for the light source color is incident on the light sensor 1042, and a signal corresponding to the incident light is output from the light sensor 1042. In the light source color measurement which is a common measurement, the luminance and color of a light emitting body such as a liquid crystal panel are determined.
In the case where the mode of the light source color measurement apparatus P is the correction mode, the light source color measurement apparatus P performs light source color measurement for correction, and stores data representing measured values of the light source color measurement for correction in the storage element 1044. In the light source color measurement for correction, the light path 1060 is blocked by the shutter 1040, light to be a target of the light source color measurement is not incident on the light sensor 1042, and a signal in the case where light to be a target of the light source color measurement is not incident on the light sensor 1042 is output from the light sensor 1042. Therefore, before the light source color measurement for correction is performed, a drive operation in advance of driving the shutter 1040 by the motor 1041 is performed so that the shutter 1040 blocks the optical path 1060. The prior driving work is a driving work for preparing the light source color measurement for correction. After the light source color measurement for correction is performed and data indicating the measurement value is stored, a post-drive operation is performed in which the motor 1041 drives the shutter 1040 so that the shutter 1040 opens the optical path 1060.
In the case where the mode of the light source color measurement device P is the temperature information output mode, the light source color measurement device P performs temperature measurement. In the temperature measurement, the temperature sensor 1043 detects the temperature of the light sensor 1042. In this way, a temperature fluctuation amount, which is a fluctuation from the temperature of the optical sensor 1042 detected at the previous correction to the newly detected temperature of the optical sensor 1042, is obtained. The internal temperature of the light source color measuring device P other than the temperature of the light sensor 1042 may also be detected.
1.4 sense of temperature fluctuation
The characteristics of the light sensor 1042 have temperature dependence. For example, where light sensor 1042 is a silicon element, the sensitivity of light sensor 1042 has only a very small temperature coefficient, while the bias voltage of light sensor 1042 has a slightly larger temperature coefficient of about-2 mV/deg.C. Therefore, in order to maintain sufficient measurement accuracy for weak light in an environment with temperature change, when the obtained temperature fluctuation amount exceeds a temperature fluctuation amount that can maintain the required measurement accuracy, the offset component is removed by calculation based on the measurement value. The means for removing the offset component includes not only calculation but also circuit compensation.
1.5 control device
As shown in fig. 1, the control device 1020 includes a main body 1080 and a power supply 1081. The main body 1080 includes an interface 1100, a control unit 1101, and a determination unit 1102.
Light source color measuring device P1、P2、P3、···、PNIs connected to the interface 1100.
Control part 1101 measures light source color P1、P2、P3、···、PNAnd (5) controlling.
The determination unit 1102 determines the number of motors 1041 that can be driven simultaneously, based on the ratio of the electric power required to drive one motor 1041 to the capacity of the power supply 1081. In embodiment 1, it is determined that the number of motors 1041 that can be driven simultaneously is one.
The power supply 1081 is an AC adapter, a battery, or the like, supplies power to the main body 1080, and supplies power to the light source color measurement device P via the main body 10801、P2、P3、···、PNElectric power is supplied. Thus, the main body 1080 is driven by the power supply 1081 and supplies the light source color measuring device P with the light source color measuring device1、P2、P3、···、PNElectric power is supplied.
1.6 communication between control device and light Source color measurement apparatus
When the mode of the light source color measurement device P is the normal measurement mode, the control section 1101 transmits a measurement command for normal measurement to the light source color measurement device P. The light source color measurement device P receives the transmitted measurement command for the normal measurement from the control section 1101, performs light source color measurement in response to the reception of the measurement command for the normal measurement, and transmits data representing the measurement value of the light source color measurement to the control section 1101.
When the mode of the light source color measurement device P is the correction mode, the control section 1101 transmits a measurement command for correction to the light source color measurement device P. The light source color measurement device P receives the transmitted measurement command for correction from the control section 1101, performs light source color measurement in response to the reception of the measurement command for correction, and transmits a completion signal indicating that the correction has been completed to the control section 1101. Data representing measured values of light source color measurements may also be sent to the control means 1020. Further, the control section 1101 transmits a control signal to the light source color measurement device P at a timing of causing the motor 1041 to drive the shutter 1040. The light source color measurement device P receives the transmitted control signal from the control section 1101, performs a driving operation of causing the motor 1041 to drive the shutter 1040 in response to the reception of the control signal, and transmits a completion signal to the control section 1101 when the driving operation is completed. The control section 1101 receives the transmitted completion signal from the light source color measurement device P.
When the mode of the light source color measurement device P is the temperature information output mode, the light source color measurement device P transmits data indicating the amount of temperature variation to the control section 1101. The control section 1101 receives the transmitted data indicating the temperature fluctuation amount from the light source color measurement device P. Instead of the temperature fluctuation amount, data representing comparison information indicating a comparison result between a preset allowable value and the temperature fluctuation amount may be transmitted. Instead of the temperature fluctuation amount, data indicating the temperature itself may be transmitted. In this case, the control device 1020 obtains the temperature fluctuation amount from the plurality of temperatures at the plurality of different timings received from the light source color measurement device P.
1.7 timing control
Fig. 3A to 3D and fig. 4 are timing charts illustrating the timing of performing each operation and the temporal change of the power supply current in the light source color measurement system of embodiment 1.
The timing of performing each operation and the temporal variation of the power supply current illustrated in fig. 3A to 3D and fig. 4 are the light source color measuring device P1、P2、P3、···、PNIs a calibration mode and is in the light source color measuring device P1、P2、P3、···、PNThe timing and the time variation of the power supply current in the case of performing zero correction at the same time. The power supply current illustrated in fig. 4 is supplied from the power supply 1081 to the light source color measuring device P for the purpose of the driving operation in advance and the driving operation in the future1、P2、P3、···、PNThe time of the supplied current varies.
As shown in fig. 3A to 3D and fig. 4, the light source color measuring device P1、P2、P3、···、PNPerforming a preceding drive operation B1、B2、B3、···、BNSeparately performing light source color measurement M for zero correction1、M2、M3、···、MNRespectively performing subsequent driving operations A1、A2、A3、···、AN. Thus, the light source color measuring device P1、P2、P3、···、PNThe previous driving operations B are respectively and continuously executed1、B2、B3、···、BNLight source color measurement M1、M2、M3、···、MNAnd subsequent driving operation A1、A2、A3、···、AN。
Preliminary drive operation BiComprising a light source color measuring device PiDriving of the motor 1041. Light source color measuring device PiThe shutter 1040 provided by the light source color measuring apparatus PiThe motor 1041 is driven to drive the motor in advanceiIn-process light source color measuring apparatus PiLight source color measuring device P in case of driving of motor 1041 providediThe middle cutoff optical path 1060. i is each of the integers 1, 2, 3, ·, N.
Subsequent driving operation AiComprising a light source color measuring device PiDriving of the motor 1041. Light source color measuring device PiThe shutter 1040 provided by the light source color measuring apparatus PiThe motor 1041 is driven to drive the subsequent driving operation AiIn-process light source color measuring apparatus PiLight source color measuring device P in case of driving of motor 1041 providediA central open optical path 1060. i is each of the integers 1, 2, 3, ·, N.
Preliminary drive operation B1、B2、B3、···、BNRespectively at mutually different timings TB1、TB2、TB3、···、TBNAnd (6) executing. Light source color measurement M1、M2、M3、···、MNIs performed simultaneously at the timing TM. Subsequent driving operation A1、A2、A3、···、ANRespectively at mutually different timings TA1、TA2、TA3、···、TANAnd (6) executing.
Therefore, at the light source color measuring device P1、P2、P3、···、PNWhile zero correction is performed and while light source color measurement M is performed1、M2、M3、···、MNIn the case of (1), the control section 1101 measures the light source color measurement device P1、P2、P3、···、PNControl is performed so that the prior driving operation B is performediTiming TB ofiAnd respectively performing a prior driving operation B1、···、Bi-1、Bi+1、···、BNTiming TB of1、···、TBi-1、TBi+1、···、TBNDifferent. i is each of the integers 1, 2, 3, ·, N. Preliminary drive operation BiInvolving prior driving operations B1、B2、B3、···、BNIn (1). Preliminary drive operation B1、···、Bi-1、Bi+1、···、BNInvolving prior driving operations B1、B2、B3、···、BNIn, but prior to, the driving operation BiDifferent. Thus, the control part 1101 measures the light source color P1、P2、P3、···、PNControl is performed so that the driving operation B is performed in advanceiIn the case of (2), the power supplied from the power supply 1081 does not exceed the capacity of the power supply 1081.
The control unit 1101 causes the drive operation B to be performed in advance1、B2、B3、···、BNThe number of the previous driving operations performed simultaneously in the process is equal to the number of the motors 1041 capable of being driven simultaneously determined by the determination unit 1102. Therefore, the number of the prior driving operations performed at the same time is changed so that the electric power supplied from the power supply 1081 does not exceed the capacity of the power supply 1081.
In the timing control according to embodiment 1, a drive operation B is performed in advance1、B2、B3、···、BNIn the case of (2), the maximum value of the power supply current is limited to the power supply current required to drive one motor 1041, the power supply current is uniformized in time, and a large peak is not generated in the power supply current. Thereby, in the light source color measuring device P1、P2、P3、···、PNIn the case of performing zero correction at the same time, the drive operation B before execution is suppressed1、B2、B3、···、BNIs supplied to the light source color measuring device P1、P2、P3、···、PNThe electric power supplied from the power supply 1081 exceeds the capacity of the power supply 1081. This advantage is particularly significant where the power supply 1081 is an AC adapter, battery or the like and the capacity of the power supply 1081 is limited,in this case, it is helpful to suppress a decrease in the power supply voltage and to stably operate the circuit.
1.8 reason for performing light source color measurements simultaneously
In embodiment 1, the timing TB is different from each other1、TB2、TB3、···、TBNPerforming a preceding drive operation B1、B2、B3、···、BNSo that no large peak is generated in the supply current. Therefore, it can be considered that TB is performed at different timings1、TB2、TB3、···、TBNPerforming a preceding drive operation B1、B2、B3、···、BNThen a light source color measurement M is performed1、M2、M3、···、MNThe timing of (c) is arbitrary. However, in embodiment 1, the light source color measurement M is performed simultaneously for the following reason1、M2、M3、···、MNAnd at the light source color measuring device P1、P2、P3、···、PNWhile the correction is performed.
(1) At the light source color measuring device P1、P2、P3、···、PNWhen the correction is not performed simultaneously, the influence of temperature fluctuation occurs. Therefore, it is desirable to provide a light source color measuring device P1、P2、P3、···、PNWhile the correction is performed.
(2) In performing light source color measurement M for zero correctioniIn the case of (2), the signal level of the signal output from the light sensor 1042 is low. Thus, the light source color measuring device PiLight source color measurement M iniSusceptible to being measured by the light source colour measuring device P1、···、Pi-1、Pi+1、···、PNIn (B) drive operation1、···、Bi-1、Bi+1、···、BNThe effect of the generated power supply noise. On the other hand, in the light source color measuring apparatus P1、P2、P3、···、PNIn the case where correction is not performed simultaneously, there is a case where the light source color measuring device P is usediIn performing light source color measurement MiAt the light source color measuring device P1、···、Pi-1、Pi+1、···、PNRespectively perform driving work B1、···、Bi-1、Bi+1、···、BNThe timing of (2) is coincident. Therefore, at the light source color measuring device P1、P2、P3、···、PNIn the case of correction without any simultaneous correction, the light source color measuring device PiLight source color measurement M iniSusceptible to being measured by the light source colour measuring device P1、···、Pi-1、Pi+1、···、PNIn (B) drive operation1、···、Bi-1、Bi+1、···、BNThe effect of the generated power supply noise. Therefore, it is desirable to provide a light source color measuring device P1、P2、P3、···、PNWhile the correction is performed.
(3) At the light source color measuring device P1、P2、P3、···、PNIf the correction is not performed simultaneously, a preceding drive operation B is executed1、B2、B3、···、BNTiming and performing a subsequent driving operation A1、A2、A3、···、ANThe timing of (2) is coincident. Therefore, at the light source color measuring device P1、P2、P3、···、PNWhen the correction is not performed simultaneously, a large peak may occur in the power supply current. Therefore, it is desirable to provide a light source color measuring device P1、P2、P3、···、PNWhile the correction is performed.
Fig. 5A to 5D and fig. 6 are timing charts illustrating the timing of executing each operation of comparative example 1 and the temporal change of the power supply current. The timing of executing each operation and the temporal change in the power supply current shown in fig. 5A to 5D and fig. 6 are timing and temporal changes in the power supply current when the timing of executing a preceding driving operation and the timing of executing a subsequent driving operation do not overlap each other even when the operations are continuously executed.
Fig. 7A to 7D and fig. 8 are timing charts illustrating the timing of executing each operation of comparative example 2 and the temporal change of the power supply current. The timing of executing each operation and the temporal change in the power supply current illustrated in fig. 7A to 7D and fig. 8 are timing and temporal change in the power supply current in the case where each operation is continuously executed and the timing of executing a preceding drive operation and the timing of executing a subsequent drive operation overlap each other.
In a prior drive operation B1、B2、B3、···、BNThe time required for each execution is X, and the subsequent driving operation A1、A2、A3、···、ANThe time required for each execution is X, and the light source color measurement M1、M2、M3、···、MNIn the case where the time required for the respective executions is Y and the number of light source color measurement devices is N, the maximum value for the power supply current is limited to the condition of the power supply current required for driving one motor 1041, that is, as shown in fig. 5A to 5D and fig. 6, the previous driving operation B is executed separately1、B2、B3、···、BNTiming TB of1、TB2、TB3、···、TBNAnd respectively executing subsequent driving operation A1、A2、A3、···、ANTiming TA of1、TA2、TA3、···、TANThe condition of misalignment is that formula (1) is satisfied.
N·X≤Y·····(1)
When the optical path 1060 is blocked by the shutter 1040 and the signal level of the signal output from the optical sensor 1042 is low, the time for acquiring the signal by the charge accumulation means or the like is adjusted to secure the measurement performance. Therefore, the time Y becomes long. However, when the noise performance of the circuit for acquiring the signal is good and the time Y can be shortened, the formula (1) may not be satisfied when the number N of the circuits is large. At this pointIn this case, for example, as shown in fig. 7A to 7D and fig. 8, a drive operation B in advance is performedNTiming TB ofNAnd performing a subsequent driving operation A1Timing TA of1Coincide and produce a large peak in the supply current.
2 embodiment 2
In embodiment 2, the timing of executing each operation is different from that of the light source color measurement system of embodiment 1.
The main differences between embodiment 1 and embodiment 2 are: in embodiment 1, the preceding and subsequent driving operations are not simultaneously performed in two or more light source color measurement apparatuses, whereas in embodiment 2, the preceding and subsequent driving operations are simultaneously performed in two or more light source color measurement apparatuses. The configuration adopted in embodiment 1 may be adopted in embodiment 2 within a range that does not hinder the adoption of the configuration that brings about the main difference described above.
Fig. 9A to 9F and fig. 10 are timing charts illustrating the timing of executing each operation of embodiment 2 and the temporal change of the power supply current.
The timing of performing each operation and the temporal change in the power supply current illustrated in fig. 9A to 9F and 10 are in the light source color measuring device P1、P2、P3、P4、···、PN-1、PNIs a calibration mode and is in the light source color measuring device P1、P2、P3、P4、···、PN-1、PNThe timing and the time variation of the power supply current in the case of performing zero correction at the same time. The power supply current shown in fig. 10 is supplied from the power supply 1081 to the light source color measuring device P for the purpose of the driving operation in advance and the driving operation after that1、P2、P3、P4、···、PN-1、PNTime variation of the current of (a).
In embodiment 2, the number of the motors 1041 determined to be simultaneously drivable is two.
As shown in FIGS. 9A to 9F and 10, the light source color measuring devicePreparing P1、P2、P3、P4、···、PN-1、PNPerforming a preceding drive operation B1、B2、B3、B4、···、BN-1、BNSeparately performing light source color measurement M for zero correction1、M2、M3、M4、···、MN-1、MNRespectively performing subsequent driving operations A1、A2、A3、A4、···、AN-1、AN。
Preliminary drive operation B1、B3、···、BN-1At timing TB respectively1、TB3、···、TN-1Is executed. Preliminary drive operation B2、B4、···、BNAt timing TB respectively1、TB3、···、TBN-1Is executed. Light source color measurement M1、M2、M3、M4、···、MN-1、MNAt the timing TM is performed simultaneously. Subsequent driving operation A1、A3、···、AN-1Respectively at timing TA1、TA3、···、TAN-1Is executed. Subsequent driving operation A2、A4、···、ANRespectively at timing TA1、TA3、···、TAN-1Is executed.
Therefore, at the light source color measuring device P1、P2、P3、P4、···、PN-1、PNWhile zero correction is performed and while light source color measurement M is performed1、M2、M3、M4、···、MN-1、MNIn the case of (1), the control section 1101 measures the light source color measurement device P1、P2、P3、P4、···、PN-1、PNControl is performed so that the prior driving operation B is performediAnd Bi+1Timing TB ofiAnd performing a prior driving operation B1、···、Bi-1、Bi+2、···、BNTiming TB of1、···、TBi-2、TBi+2、···、TBN-1Different. i is each of the integers 1, 3, N-1. Preliminary drive operation BiAnd Bi+1Involving prior driving operations B1、B2、B3、B4、···、BN-1、BNIn (1). Preliminary drive operation B1、···、Bi-1、Bi+2、···、BNInvolving prior driving operations B1、B2、B3、B4、···、BN-1、BNIn, but prior to, the driving operation BiAnd Bi+1Different. Thus, the control part 1101 measures the light source color P1、P2、P3、P4、···、PN-1、PNControl is performed so that the driving operation B is performed in advanceiAnd Bi+1The power supplied from the power supply 1081 does not exceed the capacity of the power supply 1081.
According to the timing control of embodiment 2, the driving operation B is performed in advance1、B2、B3、B4、···、BN-1、BNThe maximum value of the power supply current is limited to the power supply current required to drive the two motors 1041, and a large peak is not generated in the power supply current. Thereby, in the light source color measuring device P1、P2、P3、P4、···、PN-1、PNIn the case of performing zero correction at the same time, the drive operation B before execution is suppressed1、B2、B3、B4、···、BN-1、BNIs supplied to the light source color measuring device P1、P2、P3、···、PNThe electric power supplied from the power supply 1081 exceeds the capacity of the power supply 1081.
In addition, according to the timing control of embodiment 2, the driving operation B is performed in advance1、B2、B3、B4、···、BN-1、BNIs shortened to the previous driving operation B in embodiment 11、B2、B3、···、BNIs half of the time required for execution.
Embodiment 2 is adopted when the capacity of the power source 1081 is larger than the capacity required for driving the two motors 1041. In the case where the capacity of the power source 1081 is larger than the capacity required for driving the 3 or more motors 1041, the driving operation before and after can be simultaneously performed in the 3 or more light source color measuring devices.
Comparative example 3
Fig. 11A to 11D and fig. 12 are timing charts illustrating the timing of each operation and the temporal change in the power supply current in comparative example 3.
The timing of each operation and the temporal change in the power supply current illustrated in fig. 11A to 11D and 12 are in the light source color measuring device P1、P2、P3、···、PNIs a calibration mode and is in the light source color measuring device P1、P2、P3、···、PNThe timing and the time variation of the power supply current in the case of performing zero correction at the same time. The power supply current shown in fig. 12 is supplied from the power supply 1081 to the light source color measuring device P for the purpose of the previous driving operation and the subsequent driving operation1、P2、P3、···、PNThe time of the supplied current varies.
As shown in fig. 11A to 11D and 12, the light source color measurement device P1、P2、P3、···、PNPerforming a preceding drive operation B1、B2、B3、···、BNSeparately performing light source color measurement M for zero correction1、M2、M3、···、MNRespectively performing subsequent driving operations A1、A2、A3、···、AN。
Preliminary drive operation B1、B2、B3、···、BNAt timing TB quiltAre executed simultaneously. Light source color measurement M1、M2、M3、···、MNAt the timing TM is performed simultaneously. Subsequent driving operation A1、A2、A3、···、ANIs performed simultaneously at timing TA.
In this case, a large peak of the power supply current occurs at each of the timings TB and TA, and the electric power supplied from the power supply 1081 may reach the capacity of the power supply 1081.
Although the present invention has been described in detail, the above description is an example in all aspects, and the present invention is not limited thereto. It will be appreciated that many variations not illustrated can be envisaged without departing from the scope of the invention.
Industrial applicability of the invention
The control device and the color measurement system according to the present invention have a possibility of being utilized in the field of color measurement in which color measurement is performed by a plurality of color measurement apparatuses.
Description of the reference symbols
1000 light source color measurement system
1020 control device
1040 shutter
1041 Motor
1081 power supply
P1、P2、P3、P4、···、PN-1、PNLight source color measuring apparatus
P light source color measuring equipment
B1、B2、B3、B4、···、BN-1、BNA priori driving operation
M1、M2、M3、M4、···、MN-1、MNLight source color measurement
A1、A2、A3、A4、···、AN-1、ANSubsequent driving operation

Claims (7)

1. A control device is provided with:
an interface connected with 1 st to nth color measurement devices, N being an integer of 2 or more, the 1 st to nth color measurement devices performing 1 st to nth driving jobs, respectively, performing 1 st to nth color measurements, respectively, and the 1 st to nth driving jobs being driving jobs for preparing the 1 st to nth color measurements, respectively;
a control section that controls the 1 st to nth color measurement devices such that a timing of executing a 1 st at least one driving operation included in the 1 st to nth driving operations and a timing of executing a 2 nd at least one driving operation included in the 1 st to nth driving operations and different from the 1 st at least one driving operation are different in a case where the 1 st to nth color measurements are simultaneously executed; and
a power supply supplying power to the 1 st to Nth color measurement devices.
2. The control device as set forth in claim 1,
the 1 st to Nth color measuring devices are respectively provided with 1 st to Nth motors,
the 1 st to nth driving operations include driving of the 1 st to nth motors, respectively.
3. The control device as set forth in claim 2,
the 1 st to Nth color measuring devices are provided with 1 st to Nth photosensors, respectively, and with 1 st to Nth shutters, respectively,
the 1 st through nth photosensors are used for the 1 st through nth color measurements respectively,
the 1 st to nth shutters block or open optical paths of light incident to the 1 st to nth photosensors, respectively, and are driven by the 1 st to nth motors, respectively, in the case where the 1 st to nth motors are driven.
4. The control device according to any one of claim 1 to claim 3,
the 1 st to nth color measurements are color measurements for correcting the 1 st to nth color measurement devices, respectively.
5. The control device according to any one of claim 1 to claim 3,
the control section changes the number of driving operations simultaneously performed in the 1 st to nth driving operations so that the power supplied from the power supply does not exceed the capacity of the power supply.
6. The control device according to any one of claim 1 to claim 3,
the control part receives 1 st to Nth completion signals when the 1 st to Nth driving operations are completed, respectively.
7. A color measuring system provided with the control device of any one of claims 1 to 6 and the 1 st to nth color measuring apparatuses.
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CN1945405A (en) * 2005-10-07 2007-04-11 夏普株式会社 Back light lamp and display device having this device, method for driving and adjusting the device
CN103201602A (en) * 2010-09-28 2013-07-10 莱卡地球系统公开股份有限公司 Digital multi-spectral camera system having at least two independent digital cameras
CN102854707A (en) * 2011-06-30 2013-01-02 株式会社尼康 Accessory, camera, accessory control program, and camera control program

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