阅读说明：本技术 色差灯与色差灯调节方法 (Color difference lamp and color difference lamp adjusting method ) 是由 卞爱霞 蒋存荣 于 2021-09-24 设计创作，主要内容包括：本发明提供了一种色差灯以及一种色差灯的调节方法。该色差灯包括微控制单元、电源驱动电路以及色温调节电路,微控制单元与按键连接,用于实时接收按键发送的触发信号,并生成电源控制信号和色温调节控制信号；电源驱动电路与微控制单元连接,用于接收电源控制信号并生成电源驱动信号；色温调节电路与电源驱动电路以及微控制单元连接,可生成光源驱动信号发送至光源,以使光源在第一色温和第二色温之间自动循环调节。本发明能够实现光源在两个设定色温之间自动进行循环变换,操作人员可以在不进行任何操作的前提下获得不同色温的照明,本发明解决了现有技术中色差灯只能够提供少量色温灯光环境而存在的瑕疵漏检问题。(The invention provides a color difference lamp and an adjusting method thereof. The color difference lamp comprises a micro control unit, a power supply driving circuit and a color temperature adjusting circuit, wherein the micro control unit is connected with a key and used for receiving a trigger signal sent by the key in real time and generating a power supply control signal and a color temperature adjusting control signal; the power supply driving circuit is connected with the micro control unit and used for receiving the power supply control signal and generating a power supply driving signal; the color temperature adjusting circuit is connected with the power supply driving circuit and the micro control unit and can generate a light source driving signal to be sent to the light source so as to enable the light source to automatically adjust in a circulating mode between a first color temperature and a second color temperature. The invention can realize the automatic cyclic conversion of the light source between two set color temperatures, and operators can obtain the illumination of different color temperatures without any operation.)

1. A color difference lamp, comprising:

the micro control unit (1) is connected with the key (2) and is used for receiving the trigger signal sent by the key in real time and generating a power supply control signal and a color temperature regulation control signal;

the power supply driving circuit (3) is connected with the micro control unit and used for receiving the power supply control signal and generating a power supply driving signal;

and the color temperature adjusting circuit (4) is connected with the power supply driving circuit and the micro control unit and is used for receiving the power supply driving signal and the color temperature adjusting control signal, generating a light source driving signal and sending the light source driving signal to the light source (5) so as to enable the light source to automatically change and adjust gradually between a first color temperature and a second color temperature.

2. The color difference lamp as claimed in claim 1, further comprising:

a plurality of indicator lamps are arranged and connected with the micro control unit;

the first color temperature and the second color temperature are equally divided into a plurality of color temperature segments, and the number of the indicator lamps is consistent with that of the color temperature segments and corresponds to that of the color temperature segments one by one;

when the color temperature changes to a certain color temperature segment, the corresponding indicator lamp is lightened for indication;

the lighting indication of the indicator lamp comprises a normally-on indication or a stroboscopic indication.

3. The color difference lamp as claimed in claim 2, further comprising:

when the lighting indication of the indicator light is stroboscopic indication, the stroboscopic frequency of the indicator light is between 2Hz and 5 Hz.

4. Color difference lamp as claimed in claim 1,

the keys comprise multifunctional keys;

the multifunctional key is connected with the micro control unit and used for realizing the on-off of the light source and the gear adjustment at different color temperatures according to a first operation mode and realizing the automatic adjustment of the light source between a first color temperature and a second color temperature according to a second operation mode;

or the keys comprise a main switch key and a start-stop key;

the main switch key is connected with the micro control unit and used for realizing the on-off of the light source, the adjustment at different brightness gears and the adjustment at different color temperature gears according to a first operation mode and realizing the switching of a brightness gear adjustment mode and a color temperature gear adjustment mode according to a second operation mode;

the start-stop key is connected with the micro control unit and used for realizing automatic adjustment of the light source between a first color temperature and a second color temperature according to a first operation mode;

or the keys comprise a main switch key, a start-stop key, an add key and a subtract key;

the main switch key is connected with the micro control unit and used for realizing the on-off of the light source according to a first operation mode; switching a brightness gear adjusting mode and a color temperature gear adjusting mode according to a second operation mode;

the plus key and the minus key are respectively connected with the micro control unit and are used for realizing the brightness gear adjustment and the color temperature gear adjustment of the light source;

the start-stop key is connected with the micro control unit and used for automatically adjusting the light source between a first color temperature and a second color temperature according to a first operation mode.

5. The color difference lamp as claimed in claim 1, wherein:

the light source includes: a first sub-light source and a second sub-light source;

the light source driving signal comprises a first sub light source driving signal and a second sub light source driving signal, the first sub light source driving signal and the second sub light source driving signal are complementary, and the switching time between the first sub light source and the second sub light source is less than the reaction time of human eye nerves;

the switching time between the first sub-light source and the second sub-light source is less than or equal to 0.02S.

6. Color difference lamp as claimed in claim 1,

the automatic gradual change adjustment of the light source between the first color temperature and the second color temperature comprises one-way adjustment and automatic cycle adjustment, and the automatic cycle adjustment is rolling cycle adjustment or oscillation cycle adjustment;

setting a plurality of intermediate color temperature points between the first color temperature and the second color temperature;

the light source driving signal sent by the color temperature adjusting circuit is a pulse modulation signal: when the light source driving signal is a first pulse signal, the first pulse signal has a first duty ratio, and the light emitted by the light source has a first color temperature; when the light source driving signal is a second pulse signal, the second pulse signal has a second duty ratio, and the light emitted by the light source is a first intermediate color temperature point; when the light source driving signal is a third pulse signal, the third pulse signal has a third duty ratio, and the light emitted by the light source is a second intermediate color temperature point; when the light source driving signal is an (N + 1) th pulse signal, the (N + 1) th pulse signal has an (N + 1) th duty cycle, and light emitted by the light source is an Nth intermediate color temperature point; when the light source driving signal is an (N + 2) th pulse signal, the (N + 2) th pulse signal has an (N + 2) th duty cycle, and the light emitted by the light source is at a second color temperature;

the first color temperature, the first middle color temperature point, the second middle color temperature point, the Nth middle color temperature point and the second color temperature are equal in interval;

all the light source driving signals have the same pulse width, and the difference value between the first duty ratio and the second duty ratio and the difference value between the second duty ratio and the third duty ratio are not completely the same as the difference value between the N +1 th duty ratio and the N +2 th duty ratio;

the micro control unit controls the total time length of the light source driving signal from the first pulse signal to the second pulse signal to be uniformly changed and the total time length of the light source driving signal from the second pulse signal to the third pulse signal to be uniformly changed to be the same.

7. A method for adjusting a color difference lamp is characterized in that,

the color difference lamp is the color difference lamp of claim 1, the adjustment method comprising:

the micro control unit receives a trigger signal sent by a key in real time and generates a power supply control signal and a color temperature regulation control signal;

the power supply driving circuit receives the power supply control signal and generates a power supply driving signal;

the color temperature adjusting circuit receives the power supply driving signal and the color temperature adjusting control signal and generates a light source driving signal to the light source;

the light source is automatically and gradually changed and adjusted between a first color temperature and a second color temperature according to the light source driving signal.

8. The color-difference lamp adjustment method according to claim 7,

the micro control unit receives a trigger signal sent by a key in real time;

the keys comprise multifunctional keys;

when the multifunctional key is pressed in a first operation mode, generating a lighting and extinguishing control signal;

the micro control unit receives the on-off control signal in real time so as to change the current on-off state of the light source;

generating a start trigger signal when the multi-function key is pressed in a second operation mode,

the micro control unit receives the starting trigger signal in real time so that the light source can be automatically changed and adjusted step by step between a first color temperature and a second color temperature continuously based on the current color temperature;

or the keys comprise a main switch key and a start-stop key;

when the main switch key is pressed in a third operation mode, generating a lighting and extinguishing control signal;

the micro control unit receives the on-off control signal in real time so as to change the current on-off state of the light source;

when the start-stop key is pressed in a fourth operation mode, generating a start-stop trigger signal;

the micro control unit receives the start-stop trigger signal in real time so as to enable the light source to start automatic gradual change adjustment or stop automatic gradual change adjustment;

or the keys comprise a main switch key, a start-stop key, an add key and a subtract key;

when the main switch key is pressed in a fifth operation mode, generating a lighting and extinguishing control signal;

the micro control unit receives the on-off control signal in real time so as to change the current on-off state of the light source;

when the start-stop key is pressed in a sixth operation mode, generating a start-stop trigger signal;

the micro control unit receives the start-stop trigger signal in real time so as to enable the light source to start automatic gradual change adjustment or stop automatic gradual change adjustment;

generating a mode switching signal when the main switch key is pressed in a seventh operation mode;

and the micro control unit receives the mode switching signal in real time to realize the switching of a brightness gear adjusting mode and a color temperature gear adjusting mode.

9. The color-difference lamp adjustment method according to claim 7,

a plurality of color temperature segments are divided between the first color temperature and the second color temperature, the color temperature lengths occupied by the color temperature segments are the same, and the time lengths of the light source for driving the light source to finish adjustment and change in the color temperature segments are the same.

10. The color-difference lamp adjustment method according to claim 9,

the automatic gradual change adjustment of the light source between the first color temperature and the second color temperature comprises one-way adjustment and automatic cycle adjustment, and the automatic cycle adjustment is rolling cycle adjustment or oscillation cycle adjustment;

setting a plurality of intermediate color temperature points between the first color temperature and the second color temperature;

the first color temperature to the second color temperature are divided by the intermediate color temperature point to form a plurality of color temperature sections;

the first color temperature, the first middle color temperature point, the second middle color temperature point, the Nth middle color temperature point and the second color temperature are equal in interval;

the light source driving signal is a pulse modulation signal: when the light source driving signal is a first pulse signal, the first pulse signal has a first duty ratio, and the light emitted by the light source has a first color temperature; when the light source driving signal is a second pulse signal, the second pulse signal has a second duty ratio, and the light emitted by the light source is a first intermediate color temperature point; when the light source driving signal is a third pulse signal, the third pulse signal has a third duty ratio, and the light emitted by the light source is a second intermediate color temperature point; when the light source driving signal is an (N + 1) th pulse signal, the (N + 1) th pulse signal has an (N + 1) th duty cycle, and light emitted by the light source is an Nth intermediate color temperature point; when the light source driving signal is an (N + 2) th pulse signal, the (N + 2) th pulse signal has an (N + 2) th duty cycle, and the light emitted by the light source is at a second color temperature;

all the light source driving signals have the same pulse width, and the difference value between the first duty ratio and the second duty ratio and the difference value between the second duty ratio and the third duty ratio are not completely the same as the difference value between the N +1 th duty ratio and the N +2 th duty ratio;

the micro control unit controls the total time length of the light source driving signal from the first pulse signal to the second pulse signal to be uniformly changed and the total time length of the light source driving signal from the second pulse signal to the third pulse signal to be uniformly changed to be the same.

Technical Field

The invention belongs to the technical field of auxiliary lighting equipment for surface defect detection, and particularly relates to a color difference lamp and a color difference lamp adjusting method.

Background

The color difference lamp is mainly used in the coating industry, such as the automobile repair industry, and after painting, grinding, polishing and cleaning, the surface needs to be checked to determine whether defects such as color difference, scratches, pinholes or depressions exist.

In the actual operation process, technicians find that flaws such as color differences, scratches, pinholes or depressions on surfaces with different colors are easy to find or difficult to find at different color temperatures, so in the prior art, color difference lamps have developed double color temperature or multi-color temperature functions, and users select and switch color temperatures through keys, so that the users can check the surfaces at different color temperatures, and further, the flaws such as color differences, scratches, pinholes or depressions can be found (if any).

However, the color temperature switching by manual pressing is not very convenient, and only a few fixed color temperatures can be switched, which cannot exclude that some flaws may be easily seen at a certain color temperature or certain specific color temperatures, which are not possessed by the color difference lamp, so that the flaws cannot be correctly detected.

Disclosure of Invention

Problem (A)

In summary, how to solve the problem of missing defects caused by the fact that the color difference lamp in the prior art can only provide a small amount of color temperature light environment becomes a problem to be solved by those skilled in the art.

(II) technical scheme

The present invention provides a color difference lamp, which comprises the following components:

the micro control unit is connected with the key and used for receiving the trigger signal sent by the key in real time and generating a power supply control signal and a color temperature regulation control signal;

the power supply driving circuit is connected with the micro control unit and used for receiving the power supply control signal and generating a power supply driving signal;

and the color temperature adjusting circuit is connected with the power supply driving circuit and the micro control unit and used for receiving the power supply driving signal and the color temperature adjusting control signal, generating a light source driving signal and sending the light source driving signal to the light source so as to enable the light source to automatically change and adjust gradually between a first color temperature and a second color temperature.

Preferably, in the color difference lamp provided by the present invention, further comprising: a plurality of indicator lamps are arranged and connected with the micro control unit; the first color temperature and the second color temperature are equally divided into a plurality of color temperature segments, and the number of the indicator lamps is consistent with that of the color temperature segments and corresponds to that of the color temperature segments one by one; when the color temperature changes to a certain color temperature segment, the corresponding indicator lamp is lightened for indication; the lighting indication of the indicator lamp comprises a normally-on indication or a stroboscopic indication.

Preferably, in the color difference lamp provided by the present invention, further comprising: when the lighting indication of the indicator light is stroboscopic indication, the stroboscopic frequency of the indicator light is between 2Hz and 5 Hz.

Preferably, in the color difference lamp provided by the invention, the key comprises a multifunctional key;

the multifunctional key is connected with the micro control unit and used for realizing the on-off of the light source and the gear adjustment at different color temperatures according to a first operation mode and realizing the automatic adjustment of the light source between a first color temperature and a second color temperature according to a second operation mode;

or the keys comprise a main switch key and a start-stop key; the main switch key is connected with the micro control unit and used for realizing the on-off of the light source, the adjustment at different brightness gears and the adjustment at different color temperature gears according to a first operation mode and realizing the switching of a brightness gear adjustment mode and a color temperature gear adjustment mode according to a second operation mode; the start-stop key is connected with the micro control unit and used for realizing automatic adjustment of the light source between a first color temperature and a second color temperature according to a first operation mode;

or the keys comprise a main switch key, a start-stop key, an add key and a subtract key; the main switch key is connected with the micro control unit and used for realizing the on-off of the light source according to a first operation mode; switching a brightness gear adjusting mode and a color temperature gear adjusting mode according to a second operation mode; the plus key and the minus key are respectively connected with the micro control unit and are used for realizing the brightness gear adjustment and the color temperature gear adjustment of the light source; the start-stop key is connected with the micro control unit and used for automatically adjusting the light source between a first color temperature and a second color temperature according to a first operation mode.

Preferably, in the color difference lamp provided by the present invention, the light source includes: a first sub-light source and a second sub-light source; the light source driving signal comprises a first sub light source driving signal and a second sub light source driving signal, the first sub light source driving signal and the second sub light source driving signal are complementary, and the switching time between the first sub light source and the second sub light source is less than the reaction time of human eye nerves; the switching time between the first sub-light source and the second sub-light source is less than or equal to 0.02S.

Preferably, in the color difference lamp provided by the invention, the automatic gradual change adjustment of the light source between the first color temperature and the second color temperature comprises one-way adjustment and automatic cycle adjustment, and the automatic cycle adjustment is rolling cycle adjustment or oscillating cycle adjustment; setting a plurality of intermediate color temperature points between the first color temperature and the second color temperature; the light source driving signal sent by the color temperature adjusting circuit is a pulse modulation signal; when the light source driving signal is a first pulse signal, the first pulse signal has a first duty ratio, and the light emitted by the light source has a first color temperature; when the light source driving signal is a second pulse signal, the second pulse signal has a second duty ratio, and the light emitted by the light source is a first intermediate color temperature point; when the light source driving signal is a third pulse signal, the third pulse signal has a third duty ratio, and the light emitted by the light source is a second intermediate color temperature point; when the light source driving signal is an (N + 1) th pulse signal, the (N + 1) th pulse signal has an (N + 1) th duty cycle, and light emitted by the light source is an Nth intermediate color temperature point; when the light source driving signal is an (N + 2) th pulse signal, the (N + 2) th pulse signal has an (N + 2) th duty cycle, and the light emitted by the light source is at a second color temperature; the first color temperature, the first middle color temperature point, the second middle color temperature point, the Nth middle color temperature point and the second color temperature are equal in interval; all the light source driving signals have the same pulse width, and the difference value between the first duty ratio and the second duty ratio and the difference value between the second duty ratio and the third duty ratio are not completely the same as the difference value between the N +1 th duty ratio and the N +2 th duty ratio; the micro control unit controls the total time length of the light source driving signal from the first pulse signal to the second pulse signal to be uniformly changed and the total time length of the light source driving signal from the second pulse signal to the third pulse signal to be uniformly changed to be the same.

The invention also provides a color difference lamp adjusting method, and the color difference lamp adjusting method provided by the invention has the operation object of the color difference lamp. Specifically, the adjusting method provided by the invention comprises the following steps: the micro control unit receives a trigger signal sent by a key in real time and generates a power supply control signal and a color temperature regulation control signal; the power supply driving circuit receives the power supply control signal and generates a power supply driving signal; the color temperature adjusting circuit receives the power supply driving signal and the color temperature adjusting control signal and generates a light source driving signal to the light source; the light source is automatically and gradually changed and adjusted between a first color temperature and a second color temperature according to the light source driving signal.

Preferably, in the color difference lamp adjusting method provided by the present invention, the micro control unit receives a trigger signal sent by a key in real time; the keys comprise multifunctional keys; when the multifunctional key is pressed in a first operation mode, generating a lighting and extinguishing control signal; the micro control unit receives the on-off control signal in real time so as to change the current on-off state of the light source; when the multifunctional key is pressed in a second operation mode, a starting trigger signal is generated, and the micro control unit receives the starting trigger signal in real time so that the light source can continuously change and adjust between a first color temperature and a second color temperature automatically and gradually based on the current color temperature; or the keys comprise a main switch key and a start-stop key; when the main switch key is pressed in a third operation mode, generating a lighting and extinguishing control signal; the micro control unit receives the on-off control signal in real time so as to change the current on-off state of the light source; when the start-stop key is pressed in a fourth operation mode, generating a start-stop trigger signal; the micro control unit receives the start-stop trigger signal in real time so as to enable the light source to start automatic gradual change adjustment or stop automatic gradual change adjustment; or the keys comprise a main switch key, a start-stop key, an add key and a subtract key; when the main switch key is pressed in a fifth operation mode, generating a lighting and extinguishing control signal; the micro control unit receives the on-off control signal in real time so as to change the current on-off state of the light source; when the start-stop key is pressed in a sixth operation mode, generating a start-stop trigger signal; the micro control unit receives the start-stop trigger signal in real time so as to enable the light source to start automatic gradual change adjustment or stop automatic gradual change adjustment; generating a mode switching signal when the main switch key is pressed in a seventh operation mode; and the micro control unit receives the mode switching signal in real time to realize the switching of a brightness gear adjusting mode and a color temperature gear adjusting mode.

Preferably, in the color difference lamp adjustment method provided by the present invention, a plurality of color temperature segments are divided between the first color temperature and the second color temperature, the color temperature segments occupy the same length of color temperature, and the light source driving signal drives the light source for the same time length when the adjustment change is completed in each color temperature segment.

Preferably, in the color difference lamp adjusting method provided by the present invention, the automatic gradual change adjustment of the light source between the first color temperature and the second color temperature includes a one-way adjustment and an automatic cycle adjustment, and the automatic cycle adjustment is a rolling cycle adjustment or an oscillating cycle adjustment; setting a plurality of intermediate color temperature points between the first color temperature and the second color temperature; the first color temperature to the second color temperature are divided by the intermediate color temperature point to form a plurality of color temperature sections; the first color temperature, the first middle color temperature point, the second middle color temperature point, the Nth middle color temperature point and the second color temperature are equal in interval; the light source driving signal is a pulse modulation signal: when the light source driving signal is a first pulse signal, the first pulse signal has a first duty ratio, and the light emitted by the light source has a first color temperature; when the light source driving signal is a second pulse signal, the second pulse signal has a second duty ratio, and the light emitted by the light source is a first intermediate color temperature point; when the light source driving signal is a third pulse signal, the third pulse signal has a third duty ratio, and the light emitted by the light source is a second intermediate color temperature point; when the light source driving signal is an (N + 1) th pulse signal, the (N + 1) th pulse signal has an (N + 1) th duty cycle, and light emitted by the light source is an Nth intermediate color temperature point; when the light source driving signal is an (N + 2) th pulse signal, the (N + 2) th pulse signal has an (N + 2) th duty cycle, and the light emitted by the light source is at a second color temperature; all the light source driving signals have the same pulse width, and the difference value between the first duty ratio and the second duty ratio and the difference value between the second duty ratio and the third duty ratio are not completely the same as the difference value between the N +1 th duty ratio and the N +2 th duty ratio; the micro control unit controls the total time length of the light source driving signal from the first pulse signal to the second pulse signal to be uniformly changed and the total time length of the light source driving signal from the second pulse signal to the third pulse signal to be uniformly changed to be the same.

Preferably, in the color difference lamp adjusting method provided by the present invention, the micro control unit controls a time length from the first pulse signal to the second pulse signal, and from the second pulse signal to the third pulse signal to be uniformly changed from the N +1 th pulse signal to the N +2 th pulse signal to be less than or equal to 0.02S.

(III) advantageous effects

The invention provides a color difference lamp and also provides an adjusting method of the color difference lamp. In the invention, the color difference lamp specifically comprises a micro control unit, a power supply driving circuit and a color temperature adjusting circuit. The micro control unit is connected with the keys and used for receiving trigger signals sent by the keys in real time and generating power supply control signals and color temperature adjusting control signals; the power supply driving circuit is connected with the micro control unit and used for receiving the power supply control signal and generating a power supply driving signal; the color temperature adjusting circuit is connected with the power supply driving circuit and the micro control unit and used for receiving the power supply driving signal and the color temperature adjusting control signal, generating a light source driving signal and sending the light source driving signal to the light source so as to enable the light source to automatically adjust in a circulating mode between a first color temperature and a second color temperature. The color difference lamp provided by the invention can realize automatic cycle conversion of the light source between two set color temperatures by adjusting through the adjusting method, and operators can obtain illumination with different color temperatures on the premise of not performing any operation. Meanwhile, the invention also has the advantages of structural design, simple and convenient use and operation and the like.

Drawings

Fig. 1 is a schematic block diagram of a color difference lamp according to an embodiment of the present invention.

In fig. 1, the correspondence between the component names and the reference numerals is:

the device comprises a micro control unit 1, a key 2, a power supply driving circuit 3, a color temperature adjusting circuit 4 and a light source 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In addition, in the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.

Referring to fig. 1, fig. 1 is a schematic block diagram of a color difference lamp according to an embodiment of the invention.

The invention provides a color difference lamp, which can orderly and controllably transform the color temperature of the lamp light in a color temperature band with a set width by the structural design of the color difference lamp (particularly the design of a control circuit structure and a control program in the color difference lamp).

In one embodiment of the invention, the color difference lamp mainly comprises the following components: the device comprises a micro control unit 1, a power supply driving circuit 3, a color temperature adjusting circuit 4 and a light source 5. The micro control unit 1 is a control core of the present invention, the power driving circuit 3 and the color temperature adjusting circuit 4 may be integrated on the micro control unit 1 (when the micro control unit 1 is a single chip), and the power driving circuit 3 may generate a power driving signal to the power according to a control signal (power control signal) sent by the micro control unit 1, so as to change a power supply state of the power, for example, change a magnitude of a current or a voltage, or change an on/off state of the power.

The color temperature adjusting circuit 4 is connected to the power driving circuit 3 and the micro control unit 1, and is configured to receive the power driving signal and the color temperature adjusting control signal, generate a light source driving signal, and send the light source driving signal to the light source 5, so that the light source 5 can automatically change and adjust the brightness of the light source 5 step by step between the first color temperature and the second color temperature.

In the invention, the light source driving signal sent by the color temperature adjusting circuit 4 is a pulse modulation signal, and the pulse modulation signal comprises two sub-signals which respectively control the on and off of the first sub-light source and the second sub-light source. The two sub-signals constitute a pulse modulation signal, and two light source driving signals (sub-signals) for controlling the first sub-light source and the second sub-light source are complementary, and the color temperature value is adjusted by controlling the brightness ratio of the first sub-light source and the second sub-light source.

Specifically, the automatic gradual change adjustment of the light source between the first color temperature and the second color temperature comprises one-way adjustment and automatic cycle adjustment, wherein the one-way adjustment is stopped when the first color temperature is changed to the second color temperature or stopped when the second color temperature is changed to the first color temperature, and the automatic cycle adjustment is rolling cycle adjustment or oscillating cycle adjustment; the invention arranges a plurality of intermediate color temperature points between a first color temperature and a second color temperature, and all the color temperature points are the first color temperature, the first intermediate color temperature point, the second intermediate color temperature point. The color temperature adjusting circuit 4 can send a corresponding light source driving signal for each color temperature point (N +2 color temperature points, and therefore N +2 light source driving signals are also provided). When the light source driving signal is a first pulse signal, the first pulse signal has a first duty ratio, and the light emitted by the light source is a first color temperature; when the light source driving signal is a second pulse signal, the second pulse signal has a second duty ratio, and light emitted by the light source is a first intermediate color temperature point; when the light source driving signal is a third pulse signal, the third pulse signal has a third duty ratio, and the light emitted by the light source is a second intermediate color temperature point; when the light source driving signal is an (N + 1) th pulse signal, the (N + 1) th pulse signal has an (N + 1) th duty cycle, and the light emitted by the light source is an Nth intermediate color temperature point; when the light source driving signal is an (N + 2) th pulse signal, the (N + 2) th pulse signal has an (N + 2) th duty cycle, and the light emitted by the light source is at a second color temperature; the first color temperature, the first middle color temperature point, the second middle color temperature point, the Nth middle color temperature point and the second color temperature are equal in interval; all the light source driving signals have the same pulse width, and the difference value between the first duty ratio and the second duty ratio and the difference value between the second duty ratio and the third duty ratio are not completely the same as the difference value between the N +1 th duty ratio and the N +2 th duty ratio; and the micro control unit controls the total time length of the light source driving signal from the first pulse signal to the second pulse signal to be uniformly changed and the total time length of the light source driving signal from the second pulse signal to the third pulse signal to be uniformly changed to be the same as the total time length of the light source driving signal from the (N + 1) th pulse signal to the (N + 2) th pulse signal to be uniformly changed.

The light source 5 has two important parameters to be controlled during operation, one is color temperature and the other is brightness. Therefore, the present invention provides the color temperature adjusting circuit 4 and the power supply driving circuit 3. The color temperature adjusting circuit 4 mainly changes the color temperature of the light source 5. The power supply driving circuit 3 functions to turn on and off the light source 5 and to regulate the brightness of the light source 5. As the control core of the invention, the micro control unit 1 can also send two groups of control signals, namely a power supply control signal and a color temperature adjusting control signal, wherein the color temperature adjusting control signal is directly received by the color temperature adjusting circuit 4 and correspondingly changes the color temperature of the light source 5, the power supply control signal is received by the power supply driving circuit 3, and then the power supply driving circuit 3 correspondingly sends a power supply driving signal to the power supply, thereby regulating and controlling the voltage or current of the power supply for supplying power to the light source 5.

The micro control unit 1 can send out control signals (power supply control signals and color temperature adjusting control signals), the micro control unit 1 sends out the control signals according to control instructions input by operators, and the control instructions are triggered by the operators pressing the keys 2. In the invention, the micro control unit 1 is connected with the key 2 and is used for receiving the trigger signal sent by the key 2 in real time and generating a power supply control signal and a color temperature regulation control signal.

Specifically, the keys 2 can be specifically classified into two types: one is that a plurality of control functions are integrated on one key 2 to realize one-key multi-control, and the key 2 is defined as a multifunctional key; the other is that one key 2 corresponds to a control function to realize "single key single control", specifically, the key 2 includes a main switch key, an add key and a subtract key, the main switch key is used for controlling the on/off and the cyclic pause and continuation of the light source 5, and the add key and the subtract key are used for realizing the control of the brightness of the light source 5.

In the present invention, the first color temperature and the second color temperature are two different color temperature values, and the difference value between the first color temperature and the second color temperature is large (that is, the color temperature width is large), so that the light source 5 can provide illumination with a significant difference. Specifically, in one embodiment of the present invention, the first color temperature is set to 2500K, and the second color temperature is set to 6500K. After the color difference lamp is turned on, the micro control unit 1 sends out a control signal according to a set program, so that the light source 5 completes the uniform speed conversion from the first color temperature to the second color temperature within a set time (generally, several seconds or ten seconds, if the color temperature width is larger, the time may be slightly longer, for example, several tens of seconds).

The color temperature transition of the light source 5 is completed in a short time, generally within ten seconds, the detection time of the operator for the surface defect is long, and the light source 5 is required to provide illumination in the whole detection process, so the color temperature transition of the light source 5 needs to be controlled by the micro control unit 1 to realize automatic cycle adjustment, and particularly, the automatic cycle adjustment is rolling cycle adjustment or oscillation cycle adjustment.

The rolling type cyclic adjustment refers to that a group of color temperature data (such as 2500K, 3500K, 4500K, 5500K, 6500K) is arranged in sequence and is cyclically adjusted in a head-to-tail connection mode (the tail of the previous group of data is connected with the head of the next group of data), and the specific form is as follows: 2500K, 3500K, 4500K, 5500K, 6500K-2500K, 3500K, 4500K, 5500K, 6500K.. 9K.

The above-mentioned oscillation type cyclic adjustment means that a group of color temperature data (for example, 2500K, 3500K, 4500K, 5500K, 6500K) is arranged in sequence, and cyclic adjustment is performed by head-to-head + tail-to-tail connection (tail of the previous group of data is connected to tail of the next group of data, and head of the next group of data is connected to head of the next group), and the specific form is: 2500K, 3500K, 4500K, 5500K, 6500K, 5500K, 4500K, 3500K, 2500K-2500K, 3500K, 4500K, 5500K, 6500K, 5500K, 4500K, 3500K.

In the oscillation type cyclic adjustment mode, two adjacent groups of data can share one "head" or one "tail", for example: 2500K, 3500K, 4500K, 5500K, 6500K, 5500K, 4500K, 3500K, 2500K.

The color temperature value is only a value selected in a preferred embodiment of the present invention, and may be other color temperature values.

In addition, the invention is also provided with an indicator light which can indicate the color temperature value of the current light source 5 in a flashing mode. In the invention, one or more indicator lamps can be arranged, when one indicator lamp is arranged, the indicator lamp is connected with the micro control unit 1, the micro control unit 1 can control the indicator lamp to work, and the indicator lamp can respectively indicate the color temperature value of the current light source 5 through different flashing modes such as normal lighting, flash lighting, slow flashing and the like. When the indicator light is provided with a plurality of indicator lights, the indicator lights are connected with the micro control unit 1, and each indicator light corresponds to a specific color temperature value.

Specifically, the first color temperature and the second color temperature are equally divided into a plurality of color temperature segments, that is, a plurality of intermediate color temperatures are inserted between the first color temperature and the second color temperature, the first color temperature, the intermediate color temperatures and the second color temperatures can form an arithmetic progression, and the number of the indicator lights is consistent with the number of the color temperature segments and corresponds to the color temperature segments one by one. The indicator lamps are controlled by the micro control unit 1, and when the color temperature changes to a certain color temperature section, the corresponding indicator lamps are lighted for indication. Specifically, the lighting indication of the indicator lamp includes a normally-on indication or a stroboscopic indication. Further, when the lighting indication of the indicator light is stroboscopic indication, the stroboscopic frequency of the indicator light is between 2Hz and 5Hz (2Hz, 3Hz, 4Hz, 5Hz), and 2Hz is taken as the optimal stroboscopic frequency.

Based on the above embodiment, the present invention sets the first color temperature, the second color temperature, and the intermediate color temperature in advance to equally divide the color temperature width, and then, the present invention optimizes the key 2:

the first optimization mode is as follows: the keys 2 comprise multifunctional keys (one key is used for controlling a plurality of keys), the multifunctional keys are connected with the micro control unit 1 and are used for realizing the on-off of the light source 5 and the gear adjustment at different color temperatures according to a first operation mode or realizing the automatic adjustment of the light source 5 between the first color temperature and the second color temperature according to a second operation mode. The first operation mode and the second operation mode are distinguished by the pressing duration of the key 2 (or the triggering duration of the key 2), specifically, the first operation mode is a short-press operation mode, and the second operation mode is a long-press operation mode. Of course, the short press and the long press can be interchanged.

The second optimization mode is as follows: the key 2 comprises a main switch key, an adding key and a subtracting key, wherein the main switch key is connected with the micro control unit 1 and used for realizing the on-off of the light source 5 according to a first operation mode or realizing the switching of a brightness gear adjusting mode and a color temperature gear adjusting mode according to a second operation mode, and the adding key and the subtracting key are respectively connected with the micro control unit 1 and used for realizing the brightness gear adjusting and the color temperature gear adjusting of the light source 5. In practical products, for convenience of operation, the second key 2 optimization mode, namely the single-key single-control mode, is a preferred embodiment.

In the present invention, the light source 5 is an LED lamp light source, and the light source 5 includes: a first sub-light source and a second sub-light source. The first sub-light source and the second sub-light source are light emitting units capable of emitting a specific color temperature.

The light source driving signal comprises a first sub light source driving signal and a second sub light source driving signal (the first sub light source and the second sub light source share a set of color temperature adjusting circuit), the first sub light source driving signal and the second sub light source driving signal are complementary, and the switching time between the first sub light source and the second sub light source is shorter than the reaction time of human eye nerves, so that the stroboscopic visual effect cannot be generated when the first sub light source and the second sub light source are switched, and in popular terms, the light source 5 is always in a lighting state when being seen by human eyes.

Specifically, the switching time between the first sub-light source and the second sub-light source is less than or equal to 0.02S, that is, the switching frequency of the first sub-light source and the second sub-light source is 50Hz, and in order to achieve the eye protection function, the switching frequency of the first sub-light source and the second sub-light source is as high as possible, for example, may be increased to 120Hz or higher.

Based on the color difference lamp, the invention particularly provides a color difference lamp adjusting method, and the color difference lamp adjusting method is used for adjusting the color difference lamp.

The color difference lamp provided by the invention has two structural forms, and the difference is that the number of the keys is different. The first color difference lamp is provided with a key, namely a multifunctional key; the second color difference lamp is provided with a plurality of keys which are respectively a main switch key, a start-stop key, an add key and a subtract key. Furthermore, the second color difference lamp also comprises two structural forms, namely only a main switch key and a start-stop key are arranged, or the main switch key, the start-stop key, the plus key and the minus key are arranged.

For the first color difference lamp, the mode of operation is as follows: the micro control unit 1 receives a trigger signal sent by a key in real time; when the multifunctional key is pressed (for example, pressed for a short time) in a first operation mode, a lighting and extinguishing control signal is generated, and the micro control unit 1 receives the lighting and extinguishing control signal in real time so as to enable the light source 5 to change the current lighting and extinguishing state; when the multifunctional key is pressed in a second operation mode (for example, long-time pressing is carried out, the pressing time is 2s-3s, and mode switching is carried out), generating a starting trigger signal; the micro control unit 1 receives a start trigger signal in real time to automatically cycle and adjust the light source 5 between the first color temperature and the second color temperature.

For the second color difference lamp, the mode of operation is as follows: the keys comprise a main switch key and a start-stop key, when the main switch key is pressed (for example, the main switch key is pressed for a short time) in a third operation mode, a lighting and extinguishing control signal is generated, and the micro control unit 1 receives the lighting and extinguishing control signal in real time so as to enable the light source 5 to change the current lighting and extinguishing state; when the start-stop button is pressed (e.g. briefly pressed) in the fourth operation mode, which is implemented based on the light source 5 being turned on after the start of the third operation mode, the micro control unit 1 receives the start-stop trigger signal in real time to enable the light source 5 to start the automatic circulation adjustment or stop the automatic circulation adjustment. When the key of the main switch is pressed in a fifth operation mode in the structural design that the keys comprise the main switch key, the start-stop key, the add key and the subtract key, a lighting and extinguishing control signal is generated, and the micro control unit 1 receives the lighting and extinguishing control signal in real time so as to enable the light source to change the current lighting and extinguishing state. When the start-stop key is pressed in a sixth operation mode, generating a start-stop trigger signal; and the micro control unit receives the start-stop trigger signal in real time so as to enable the light source to start automatic cycle adjustment or stop automatic cycle adjustment. When the main switch key is pressed in a seventh operation mode, generating a mode switching signal; and the micro control unit receives the mode switching signal in real time to realize the switching of the brightness gear adjusting mode and the color temperature gear adjusting mode. In a seventh operation mode, the main switch key is pressed for a long time, the pressing time is 2s-3s, mode switching is performed, a brightness adjusting signal is generated during the main switch key pressing, the micro control unit 1 receives the brightness adjusting signal in real time and enters a brightness adjusting mode, and in the brightness adjusting mode, brightness adjustment is achieved by triggering an add key or a subtract key.

Specifically, the adjusting method comprises the following steps: the micro control unit 1 receives the trigger signal sent by the key 2 in real time and generates a power supply control signal and a color temperature regulation control signal; the power driving circuit 3 receives the power control signal and generates a power driving signal; the color temperature adjusting circuit 4 receives the power supply driving signal and the color temperature adjusting control signal and generates a light source driving signal to the light source 5; the light source 5 is automatically cycled between a first color temperature and a second color temperature in response to a light source drive signal. The micro control unit 1 receives a trigger signal sent by the key 2 in real time (the key 2 is triggered by being pressed by an operator, so that the trigger signal is sent out).

When the key 2 is pressed in the first operation mode, a lighting and extinguishing control signal is generated, and the micro control unit 1 receives the lighting and extinguishing control signal in real time, so that the light source 5 changes the current lighting and extinguishing state, for example, the light source 5 is turned on or the light source 5 is turned off. Before the second operation mode is performed, the first operation mode and the second operation mode are switched, the switching action is to press a key for a long time so that the key generates an operation mode switching signal, the micro control unit 1 receives the operation mode switching signal in real time, and the second operation mode is entered after the operation mode is switched. Specifically, when the key 2 is pressed in the second operation mode, a stop trigger signal is generated, the micro control unit 1 receives the stop trigger signal in real time, so that the light source 5 stops at the current color temperature according to the stop trigger signal, at this time, the color difference lamp only provides illumination with one color temperature and one brightness, in this state, when the key 2 is pressed again in the second operation mode, a start trigger signal is generated, and the micro control unit 1 receives the start trigger signal in real time, so that the light source 5 continues to automatically cycle and adjust between the first color temperature and the second color temperature based on the current color temperature. The automatic circulation adjustment may be the rolling circulation adjustment or the oscillation circulation adjustment, and two circulation adjustment schemes are selected for execution.

The invention defines a plurality of operation modes, which correspond to the color difference lamps with different structural forms, and the main difference is that the number of the keys arranged on the color difference lamps is different. Specifically, the invention discloses several color difference lamps as follows: the first type is provided with a key; the second type is provided with two keys; thirdly, four keys are arranged; the fourth type is provided with a plurality of (more than four) keys. With the increase of the number of the arranged keys, the functions of the color difference lamp are gradually improved, and the functions of the keys are more specific.

In one embodiment of the present invention, the color difference lamp is provided with a key, which is a multifunctional key, and a function of triggering and controlling mode conversion by a control signal is integrated on the key, for example, by pressing the key for a short time, the color difference lamp can be controlled to be turned on and off, and by pressing the key for a long time, the control mode can be switched, and after the control mode is switched, the key is pressed again, so that the start and stop of color temperature cycle adjustment of the color difference lamp can be controlled, and in this mode, by pressing the key for a long time, the color difference lamp is switched back to the initial control mode, that is, the color difference lamp is controlled to be turned on and off.

In another embodiment of the present invention, the color difference lamp is provided with two keys, namely a main switch key and a start/stop key, wherein the two keys have different functions, one of the keys can control the color difference lamp to be turned on and off, and the other key can control the color temperature cycle adjustment to be started and stopped. In the present embodiment, for one key, since there is no need to switch the control mode, the control friendliness of the color difference lamp for the operator is increased.

In another embodiment of the present invention, based on the above embodiment (i.e. the embodiment with two keys), two more keys may be added to the color difference lamp, and four keys are provided, which are respectively a main switch key, a start-stop key, an add key and a subtract key, where two keys (the main switch key and the start-stop key) respectively control the on/off of the color difference lamp and the start and stop of the color temperature cycle adjustment, and the other two keys (the add key and the subtract key) can implement the brightness adjustment (one key increases the brightness, and the other key decreases the brightness).

Of course, based on the above embodiments, the present invention may have other structural forms, for example, three keys are provided, one of the keys is a multifunctional key, and the other two keys are brightness adjusting keys. When the color difference lamp is in an off state, the color difference lamp is turned on after the multifunctional key is pressed down, then the mode switching is carried out by pressing the multifunctional key for a long time, after the control mode switching is successful, the control of starting and stopping of color temperature cyclic adjustment can be realized by pressing the multifunctional key, and under the control mode, the brightness adjustment of the color difference lamp can be realized by pressing the brightness adjustment key. Of course, in the structural design in which the brightness adjustment button is provided, brightness adjustment can be performed in any control mode as long as the color difference lamp is turned on.

In order to facilitate operators to accurately know which control mode the current color difference lamp is in, the invention can also be provided with an indicator lamp, and the corresponding indicator lamp is lightened under different control modes.

In the invention, the keys can be added according to the increase of functions, for example, the color temperature circulation regulation circulation speed regulation function is added, and the circulation speed regulation increase and decrease keys can be correspondingly arranged. For another example, by adding the function of adjusting the color temperature width range, the invention can correspondingly set the button for adjusting the color temperature width range.

Specifically, a plurality of color temperature segments are divided between the first color temperature and the second color temperature, the color temperature segments occupy the same length of color temperature, and the light source driving signal drives the light source 5 to complete the adjustment change in the same time length in each color temperature segment. The first color temperature, the second color temperature and the intermediate color temperature are set by a technician, and the numerical values of the first color temperature, the intermediate color temperature and the second color temperature form an arithmetic progression, so that the color temperature can be uniformly changed.

Specifically, a plurality of intermediate color temperature points are arranged between a first color temperature and a second color temperature; the first color temperature and the second color temperature are divided by the intermediate color temperature point to form a plurality of color temperature sections; the light source driving signal is a pulse modulation signal: when the light source driving signal is a first pulse signal, the first pulse signal has a first duty ratio, and the light emitted by the light source 5 has a first color temperature; when the light source driving signal is a second pulse signal, the second pulse signal has a second duty ratio, and the light emitted by the light source 5 is a first intermediate color temperature point; when the light source driving signal is a third pulse signal, the third pulse signal has a third duty ratio, and the light emitted by the light source 5 is a second intermediate color temperature point; when the light source driving signal is an (N + 1) th pulse signal, the (N + 1) th pulse signal has an (N + 1) th duty cycle, and the light emitted by the light source 5 is an Nth intermediate color temperature point; when the light source driving signal is the (N + 2) th pulse signal, the (N + 2) th pulse signal has the (N + 2) th duty cycle, and the light emitted by the light source 5 is the second color temperature; all the light source driving signals have the same pulse width, and the difference value between the first duty ratio and the second duty ratio and the difference value between the second duty ratio and the third duty ratio are not completely the same as the difference value between the N +1 th duty ratio and the N +2 th duty ratio; the micro control unit 1 controls the total time length from the first pulse signal to the second pulse signal, and from the second pulse signal to the third pulse signal to be the same as the total time length from the N +1 pulse signal to the N +2 pulse signal. When the light source comprises two sub-light sources, i.e. a first sub-light source and a second sub-light source, the lighting of the first sub-light source and the second sub-light source is performed alternately, and the switching time between the first sub-light source and the second sub-light source is controlled by the micro control unit 1. The micro control unit 1 controls the total time length from the first pulse signal to the second pulse signal, and from the second pulse signal to the third pulse signal to be the same, so that the two sub-light sources can be alternately lightened at a constant speed, and meanwhile, the change time length is less than or equal to 0.02S, so that the stroboscopic condition can be avoided (the smaller the change time length is, the better the stroboscopic condition is).

The invention provides a color difference lamp and also provides an adjusting method of the color difference lamp. In the invention, the color difference lamp specifically comprises a micro control unit 1, a power supply driving circuit 3 and a color temperature adjusting circuit 4. The micro control unit 1 is connected with the key 2 and is used for receiving a trigger signal sent by the key 2 in real time and generating a power supply control signal and a color temperature regulation control signal; the power supply driving circuit 3 is connected with the micro control unit 1 and used for receiving a power supply control signal and generating a power supply driving signal; the color temperature adjusting circuit 4 is connected with the power driving circuit 3 and the micro control unit 1, and is configured to receive a power driving signal and a color temperature adjusting control signal, generate a light source driving signal, and send the light source driving signal to the light source 5, so that the light source 5 automatically adjusts in a cycle between a first color temperature and a second color temperature. The color difference lamp provided by the invention can realize automatic cycle conversion of the light source 5 between two set color temperatures by adjusting through the adjusting method, and operators can obtain illumination with different color temperatures on the premise of not performing any operation. Meanwhile, the invention also has the advantages of structural design, simple and convenient use and operation and the like.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.