CN210629926U

CN210629926U - Controller

Info

Publication number: CN210629926U
Application number: CN201921393287.3U
Authority: CN
Inventors: 徐春青; 徐亮亮
Original assignee: Suzhou Weisenlaite Automation Technology Co Ltd
Current assignee: Suzhou Weisenlaite Automation Technology Co Ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-05-26
Anticipated expiration: 2029-08-26

Abstract

The utility model provides a controller, it includes: the circuit comprises an external trigger receiving module, a singlechip control module, a voltage switching circuit module, a multi-channel reference voltage module, an analog switch module, a constant current circuit module, a driving circuit module and an OR gate circuit module; an external signal passes through the external trigger receiving module and the singlechip control module in sequence; a first internal signal sequentially passes through the singlechip control module, the voltage switching circuit module and the driving circuit module; a second internal signal sequentially passes through the singlechip control module, the multi-channel reference voltage module, the analog switch module, the constant current circuit module and the driving circuit module; and a third internal signal sequentially passes through the OR gate circuit module, the analog switch module, the constant current circuit module and the driving circuit module. The utility model discloses a controller can satisfy stroboscopic 200hz, under light source lightening time 500us, light source luminance is the user demand of the triple of often brightening, has guaranteed that normal flying claps and has used.

Description

Controller

Technical Field

The utility model relates to a controller especially relates to a controller of high stroboscopic of multichannel, constant current that often brightens.

Background

The multichannel high stroboscopic controller is mainly used for an AOI annular light source at present, the multichannel light source can be simultaneously dimmed, the constant current is normally on, the maximum stroboscopic period can reach 200hz, the strobe lighting time of the light source can be automatically detected, and when the lighting time in one period of the light source is less than 500uS, the brightness is more than three times that of the normally on light. However, the existing strobe controller has the following problems: 1. the constant-current function of constant brightness is not provided; 2. the stroboscopic period can not reach more than 100 HZ; 3. the maximum number of channels is only four channels, which cannot meet the use requirement of the AOI light source. Therefore, it is necessary to provide a further solution to the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a controller to overcome the not enough that exists among the prior art.

In order to achieve the above object, the present invention provides a controller, which includes: the circuit comprises an external trigger receiving module, a singlechip control module, a voltage switching circuit module, a multi-channel reference voltage module, an analog switch module, a constant current circuit module, a driving circuit module and an OR gate circuit module;

an external signal passes through the external trigger receiving module and the singlechip control module in sequence;

a first internal signal passes through the singlechip control module, the voltage switching circuit module and the driving circuit module in sequence;

a second internal signal sequentially passes through the singlechip control module, the multi-channel reference voltage module, the analog switch module, the constant current circuit module and the driving circuit module;

and a third internal signal sequentially passes through the OR gate circuit module, the analog switch module, the constant current circuit module and the driving circuit module.

As an improvement of the controller of the present invention, the external trigger receiving module includes: an external trigger acceptance chip and a peripheral circuit of the external trigger acceptance chip, the peripheral circuit including: the external trigger receiving chip comprises a plurality of resistors which are connected to the pins of the external trigger receiving chip in parallel and a capacitor which is connected to one pin of the external trigger receiving chip in parallel.

As the utility model discloses an improvement of controller, single chip microcomputer control module includes that the model is STC8A8K64S4A 12' S singlechip.

As the utility model discloses an improvement of controller, the voltage switching circuit module includes: and in one circuit, a voltage signal sequentially passes through the resistor, the triode, the resistor and the MOS tube to reach the LED, and in the other circuit, a voltage signal sequentially passes through the resistor, the triode, the resistor and the MOS tube to reach the LED.

As an improvement of the controller of the present invention, the multichannel reference voltage module includes a DAC chip of which three models are TLC5620 connected to each other.

As an improvement of the controller of the present invention, the analog switch module includes: the driver chip and be connected to peripheral circuit on the driver chip, the model of driver chip is SN74LVC1G66, peripheral circuit includes: the driving circuit comprises two capacitors arranged in parallel and connected to one pin of the driving chip and a resistor connected between one capacitor and the other pin.

As the utility model discloses an improvement of controller, the constant current circuit module includes: the driver chip and the peripheral circuit of driver chip, the model of driver chip is LMV722, the peripheral circuit includes: the driving circuit comprises two capacitors arranged in parallel and connected to one pin of the driving chip, a triode connected to the other pin of the driving chip through a resistor, a resistor connected to the other pin of the driving chip, and two resistors arranged in parallel and connected to one pin of the driving chip.

As an improvement of the controller of the present invention, the driving circuit module includes: the high-power triode comprises a high-power triode and two resistors which are connected in parallel and connected with the emitting electrode of the high-power triode.

As an improvement of the controller of the present invention, the or gate circuit module includes: a control chip model 74HC 32D.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a controller can satisfy stroboscopic 200hz, under light source lightening time 500us, light source luminance is the user demand of the triple of often brightening, has guaranteed that normal flying claps and has used. Meanwhile, the mode can be switched to a normally bright constant current mode, and the conventional use requirements are met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic block diagram of a controller according to the present invention;

fig. 2 is a circuit diagram of an external trigger receiving module in the controller of the present invention;

fig. 3 is a circuit diagram of a control module of a single chip in the controller of the present invention;

fig. 4 is a circuit diagram of a voltage switching circuit module in the controller of the present invention;

fig. 5 is a circuit diagram of a multi-channel reference voltage module in the controller of the present invention;

fig. 6 is a circuit diagram of an analog switch module in the controller of the present invention;

fig. 7 is a circuit diagram of a constant current circuit module in the controller of the present invention;

fig. 8 is a circuit diagram of a driving circuit module in the controller according to the present invention;

fig. 9 is a circuit diagram of an or gate circuit module in the controller according to the present invention.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

As shown in fig. 1, the controller of the present invention includes: the circuit comprises an external trigger receiving module 1, a singlechip control module 2, a voltage switching circuit module 3, a multi-channel reference voltage module 4, an analog switch module 5, a constant current circuit module 6, a driving circuit module 7 and an OR gate circuit module 8.

Wherein, the relation among each module is: an external signal passes through the external trigger receiving module 1 and the singlechip control module 2 in sequence; a first internal signal passes through the singlechip control module 2, the voltage switching circuit module 3 and the driving circuit module 7 in sequence; a second internal signal sequentially passes through the singlechip control module 2, the multi-channel reference voltage module 4, the analog switch module 5, the constant current circuit module 6 and the drive circuit module 7; and a third internal signal sequentially passes through the OR gate circuit module 8, the analog switch module 5, the constant current circuit module 6 and the driving circuit module 7.

As shown in fig. 2, the external trigger accepting module 1 includes: an external trigger acceptance chip U12 and peripheral circuits of the external trigger acceptance chip U12. The peripheral circuit includes: the external trigger receiving chip comprises a plurality of resistors R19-R22 which are connected in parallel and connected to pins of the external trigger receiving chip U12 respectively, and capacitors C44 and C45 which are connected in parallel and connected to one pin of the external trigger receiving chip U12.

Therefore, when the external trigger signal is changed from "0" to "1", the external trigger signal 1 is changed from "1" to "0", and at this time, after the single chip microcomputer control module 2 receives the external signal, the IO port of the single chip microcomputer control module 2 outputs a pulse signal to the or gate circuit, the width of the pulse signal is determined by the set value of the single chip microcomputer, and the range is 10us-2700 us.

As shown in fig. 3, the single chip microcomputer control module 2 serves as a general control part of the controller of the present invention. In an exemplary embodiment, the single chip microcomputer control module 2 comprises a single chip microcomputer U1 with model number STC8A8K64S4a 12.

As shown in fig. 4, the voltage switching circuit module 3 switches the input voltage of the LED through two MOS transistors, and specifically, the voltage switching circuit module 3 includes: two voltage switching circuits which are arranged in parallel are arranged, wherein in one circuit, a voltage signal sequentially passes through a resistor R1, a triode Q1, resistors R6, R7 and a MOSQ3 tube to reach an LED, and in the other circuit, a voltage signal sequentially passes through a resistor R3, a triode Q4, a triode Q5, a resistor R8, a resistor R9 and an MOS tube Q6 to reach the LED. The voltage switching circuit module 3 is operated to switch the voltage to 24V when it is normally on and to 48V when it is stroboscopic.

As shown in fig. 5, the multi-channel reference voltage module 4 adopts a four-channel DAC chip, and communicates with the single chip microcomputer control module 2 through SPI, so as to divide the voltage of 1.1V into 255 levels (i.e., 0-1.1V) for the analog light-switching system. Specifically, the multichannel reference voltage module 4 includes three interconnected DAC chips of type TLC 5620.

As shown in fig. 6, the analog switch module 5 includes: the driver chip U25 and be connected to peripheral circuit on the driver chip, the model of driver chip is SN74LVC1G66, peripheral circuit includes: two capacitors C56 and C57 arranged in parallel and connected to one pin of the driving chip, and a resistor R43 connected between one capacitor C56 and the other pin. Therefore, when the analog switch module 5 works, the analog switch module can receive the reference voltage and the switch signal, when the on-light signal is '1', the reference voltage is transmitted to the constant current circuit module 6 to be used as a reference, and when the on-light signal is '0', the output is '0'.

As shown in fig. 7, the constant current circuit module 6 is a constant current driving circuit, and includes: the drive chip and the peripheral circuit of drive chip U16, the model of drive chip is LMV722, the peripheral circuit includes: the driving circuit comprises two capacitors C52 and C53 which are arranged in parallel and connected to one pin of a driving chip U16, a triode Q2 which is connected to the other pin of the driving chip U16 through a resistor R37, a resistor R38 which is connected to the other pin of the driving chip U16, and two resistors R39 and R40 which are arranged in parallel and connected to one pin of the driving chip U16.

As shown in fig. 8, the driving circuit module 7 is driven by a high power transistor TIP31C, which includes: the high-power triode Q12, two parallel resistors R143 and R144 connected from the emitter of the high-power triode. Two resistors R143 and R144 arranged in parallel in the driving circuit module 7 are used for sampling current, the current is fed back to the constant current circuit module 6 through the sampled voltage value, and the constant current circuit module 6 outputs a PWM wave to enable the B pole of the triode to be continuously turned on and off until the current is constant.

As shown in fig. 9, the or gate circuit block 8 includes: and the control chip U13 is 74HC 32D. When the or gate circuit module 8 works, the external trigger signal and the normally bright signal are subjected to or, when the normally bright signal is given, the output of the or gate is always 1, when the normally bright signal is not given, the output is determined by the external trigger signal, the external trigger is 1, the output is 1, the external trigger is 0, and the output is 0.

To sum up, the utility model discloses a controller can satisfy stroboscopic 200hz, under light source lightening time 500us, light source luminance is the user demand of the triple of normally bright, has guaranteed that normal flying claps and uses. Meanwhile, the mode can be switched to a normally bright constant current mode, and the conventional use requirements are met.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A controller, characterized in that the controller comprises: the circuit comprises an external trigger receiving module, a singlechip control module, a voltage switching circuit module, a multi-channel reference voltage module, an analog switch module, a constant current circuit module, a driving circuit module and an OR gate circuit module;

2. The controller of claim 1, wherein the external trigger acceptance module comprises: an external trigger acceptance chip and a peripheral circuit of the external trigger acceptance chip, the peripheral circuit including: the external trigger receiving chip comprises a plurality of resistors which are connected to the pins of the external trigger receiving chip in parallel and a capacitor which is connected to one pin of the external trigger receiving chip in parallel.

3. The controller of claim 1, wherein the single chip microcomputer control module comprises a single chip microcomputer of type STC8A8K64S4a 12.

4. The controller of claim 1, wherein the voltage switching circuit module comprises: and in one circuit, a voltage signal sequentially passes through the resistor, the triode, the resistor and the MOS tube to reach the LED, and in the other circuit, a voltage signal sequentially passes through the resistor, the triode, the resistor and the MOS tube to reach the LED.

5. The controller of claim 1, wherein the multichannel reference voltage module comprises three interconnected model TLC5620 DAC chips.

6. The controller of claim 1, wherein the analog switch module comprises: the driver chip and be connected to peripheral circuit on the driver chip, the model of driver chip is SN74LVC1G66, peripheral circuit includes: the driving circuit comprises two capacitors arranged in parallel and connected to one pin of the driving chip and a resistor connected between one capacitor and the other pin.

7. The controller according to claim 1, wherein the constant current circuit module comprises: the driver chip and the peripheral circuit of driver chip, the model of driver chip is LMV722, the peripheral circuit includes: the driving circuit comprises two capacitors arranged in parallel and connected to one pin of the driving chip, a triode connected to the other pin of the driving chip through a resistor, a resistor connected to the other pin of the driving chip, and two resistors arranged in parallel and connected to one pin of the driving chip.

8. The controller according to claim 1, wherein the driving circuit module comprises: the high-power triode comprises a high-power triode and two resistors which are connected in parallel and connected with the emitting electrode of the high-power triode.

9. The controller of claim 1, wherein the or gate circuit module comprises: a control chip model 74HC 32D.