CN215576338U

CN215576338U - Analog controller

Info

Publication number: CN215576338U
Application number: CN202121673457.0U
Authority: CN
Inventors: 不公告发明人
Original assignee: Guangdong Lyric Robot Intelligent Automation Co Ltd
Current assignee: Guangdong Lyric Robot Automation Co Ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-01-18
Anticipated expiration: 2031-07-22

Abstract

The utility model relates to an analog controller which comprises a linear voltage stabilizing circuit, a control circuit and a light source, wherein the linear voltage stabilizing circuit and the control circuit are respectively connected with the light source, the linear voltage stabilizing circuit comprises a linear voltage stabilizer U1, the output end OUT of the linear voltage stabilizer U1 is connected with the light source, the control circuit comprises a switching tube Q1 and a driving unit, the grid electrode of the switching tube Q1 is connected with the driving unit, and the drain electrode and the source electrode are respectively connected with the light source and the ground. The utility model can shorten the response time, realize the quick start and stop of the light source and further improve the reliability of the whole system.

Description

Analog controller

Technical Field

The utility model relates to the technical field of electronics, in particular to an analog controller.

Background

With the rapid development of automatic production, machine vision light sources are widely used, which are important factors influencing the input of a machine vision system and directly influence the quality and application effect of input data. In order to achieve the purpose of fast response and stable output voltage during response, the machine vision light source generally adopts a linear voltage regulator scheme.

The machine vision light source needs to be controlled by an analog controller, the existing analog controller usually connects a control circuit with a linear voltage stabilizer, the control circuit can pull an ADJ pin of the linear voltage stabilizer to a 0V state after receiving a trigger signal every time, the voltage difference between the ADJ pin and an OUT pin is increased, and then the linear voltage stabilizer enters a protection state, so that the trigger response time has uncertainty, trigger signals with different frequencies and different duty ratios are caused, and the response time has large difference. The process time from the signal received by the control circuit to the time when the output voltage of the controller reaches the set value is long, so that the trigger frequency cannot be too high, and the overall efficiency is influenced.

The existing machine vision light source generally adopts an LED light source, the LED belongs to a thermal light source, only 30% -40% of electric energy is converted into light energy, the rest 60% -70% is converted into heat energy, the existing analog controller scheme needs to continuously turn on the light source in order to guarantee response time, the light source cannot be automatically turned off when no signal is input, and the light source can be automatically started after a trigger signal is received, so that the service life of the light source is shortened, and the reliability of the whole system is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an analog controller which can shorten response time, realize the quick start and stop of a light source and further improve the reliability of the whole system.

An analog controller comprises a linear voltage stabilizing circuit, a control circuit and a light source, wherein the linear voltage stabilizing circuit and the control circuit are respectively connected with the light source, the linear voltage stabilizing circuit comprises a linear voltage stabilizer U1, an output end OUT of a linear voltage stabilizer U1 is connected with the light source, the control circuit comprises a switch tube Q1 and a driving unit, a grid electrode of the switch tube Q1 is connected with the driving unit, and a drain electrode and a source electrode are respectively connected with the light source and the ground. Linear voltage stabilizing circuit and control circuit are independent each other and are connected with the light source respectively for linear voltage stabilizing circuit is in operating condition always, and the influence of control circuit effectively shortens response time, through the start-up and the closing of control circuit independent control light source, can realize the quick response of light source, and then realizes the self-closing light source when no signal input, and the self-starting light source again after receiving trigger signal effectively prolongs the life of light source.

Further, the driving unit is a gate driver U2, the input pin IN of the gate driver U2 is connected to a trigger signal, and the output pin OUT of the gate driver U2 is connected to the gate of the switching tube Q1. The gate driver U2 is used to drive the switching tube Q1, so as to ensure that the switching tube Q1 has a fast switching speed, thereby achieving a fast response of the light source.

Further, the VDD pin of the gate driver U2 is connected to a 15V power supply.

Further, the model of the gate driver U2 is UCC 27324D.

Further, a diode D2 is arranged between an adjusting pin ADJ and an output end OUT of the linear voltage regulator U1, an anode of the diode D2 is connected to the adjusting pin ADJ, and a cathode of the diode D2 is connected to the output end OUT. The diode D2 is used to quickly release the voltage at the adjustment pin ADJ of the linear regulator U1 through the diode D2 when the output is short-circuited, so that the linear regulator U1 enters a short-circuit protection state, thereby protecting the light source.

Further, a diode D1 is arranged between the input end IN and the output end OUT of the linear voltage regulator U1, the anode of the diode D1 is connected to the output end OUT, and the cathode is connected to the input end IN. A diode D1 is added between an input end IN and an output end OUT of the linear voltage regulator U1, and if the output voltage of the output end OUT is higher than the input voltage of the input end IN or is short-circuited, the upper voltage of the output end OUT is released through the diode D1, so that the linear voltage regulator is prevented from being damaged by negative voltage.

Further, the switching tube Q1 is a field effect transistor.

Further, a non-polar capacitor C5 is arranged between the adjusting pin ADJ of the linear voltage regulator U1 and the ground. The non-polar capacitor C5 can reduce interference.

Further, a capacitor C1 and a capacitor C2 are connected IN parallel between the input terminal IN of the linear regulator U1 and the ground.

Further, a capacitor C3 and a capacitor C4 are connected in parallel between the output terminal OUT of the linear regulator U1 and the ground.

Compared with the prior art, the utility model has the beneficial effects that: linear voltage stabilizing circuit and control circuit are independent each other and are connected with the light source respectively for linear voltage stabilizing circuit is in operating condition always, and the influence of control circuit effectively shortens response time, through the start-up and the closing of control circuit independent control light source, can realize the quick response of light source, and then realizes the self-closing light source when no signal input, and the self-starting light source again after receiving trigger signal effectively prolongs the life of light source. A diode D2 is arranged between an adjusting pin ADJ and an output end OUT of the linear voltage stabilizer U1, when output is short-circuited, voltage on the adjusting pin ADJ of the linear voltage stabilizer U1 can be quickly released through the diode D2, the linear voltage stabilizer U1 enters a short-circuit protection state, and therefore protection of a light source is achieved.

According to the utility model, through the improved linear voltage regulator circuit, the response time of the light source can be effectively shortened, so that the response time is fixed and is not influenced by the frequency and the duty ratio of the trigger signal, the rapid control of the light source is realized, and the reliability of the whole system is further improved.

Drawings

Fig. 1 is a circuit diagram of an analog controller according to an embodiment of the present invention.

The reference numbers illustrate: linear voltage stabilizing circuit 1, control circuit 2, light source 3.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1, in a preferred embodiment, the analog controller of the present invention mainly includes a linear voltage stabilizing circuit 1, a control circuit 2 and a light source 3, the linear voltage stabilizing circuit 1 and the control circuit 2 are independent of each other and are respectively connected to the positive electrode and the negative electrode of the light source 3, the linear voltage stabilizing circuit 1 is configured to provide a stable voltage for the light source 3, and the control circuit 2 is configured to control the light source 3 to be turned on and off according to a trigger signal.

Specifically, the linear voltage stabilizing circuit 1 comprises a linear regulator U1, the linear regulator U1 has a regulation pin ADJ, an input terminal IN, and an output terminal OUT, the output terminal OUT of the linear regulator U1 is connected to the light source 3, the input terminal IN is connected to the power supply, and the regulation pin ADJ is grounded.

A diode D2 is arranged between an adjusting pin ADJ and an output end OUT of the linear voltage regulator U1, the anode of the diode D2 is connected with the adjusting pin ADJ, and the cathode of the diode D2 is connected with the output end OUT. The diode D2 is used to quickly release the voltage at the adjustment pin ADJ of the linear regulator U1 through the diode D2 when the output is short-circuited, so that the linear regulator U1 enters a short-circuit protection state, thereby protecting the light source 3.

A diode D1 is arranged between an input end IN and an output end OUT of the linear voltage stabilizer U1, the anode of the diode D1 is connected with the output end OUT, and the cathode of the diode D1 is connected with the input end IN. A diode D1 is added between an input end IN and an output end OUT of the linear voltage regulator U1, and if the output voltage of the output end OUT is higher than the input voltage of the input end IN or is short-circuited, the upper voltage of the output end OUT is released through the diode D1, so that the linear voltage regulator is prevented from being damaged by negative voltage.

In this embodiment, a non-polar capacitor C5 is disposed between the adjustment pin ADJ of the linear regulator U1 and ground, and the non-polar capacitor C5 can reduce interference, thereby ensuring the reliability of the linear regulator U1.

A capacitor C1 and a capacitor C2 are connected IN parallel between the input end IN and the ground, wherein the capacitor C1 is a polar capacitor, the capacitor C2 is a non-polar capacitor, the anode of the capacitor C1 is connected with the input end IN, and the cathode of the capacitor C1 is grounded. A capacitor C3 and a capacitor C4 are connected between the output end OUT and the ground in parallel, wherein the capacitor C3 is a limit capacitor, the capacitor C4 is a nonpolar capacitor, the anode of the capacitor C3 is connected with the output end OUT, and the cathode of the capacitor C3 is grounded. The capacitor C1, the capacitor C2, the capacitor C3 and the capacitor C4 have a filtering function to ensure the stability of the voltage of the light source 3.

The control circuit 2 includes a switch Q1 and a driving unit, in this embodiment, the driving unit adopts a gate driver U2, specifically, a UCC27324D model can be adopted, the switch Q1 adopts a field effect transistor, a gate of the switch Q1 is connected to an output pin OUT of the gate driver U2, and a drain and a source are respectively connected to the light source 3 and the ground. The input pin IN of the gate driver U2 is connected to a trigger signal, and the VDD pin of the gate driver U2 is connected to a 15V power supply. In this embodiment, a resistor R10, a resistor R9, and a diode D3 are disposed between an output pin OUT of the gate driver U2 and the switching tube Q1, wherein the resistor R9 is connected in series with the diode D3 and then connected in parallel with the resistor R10, and the gate driver U2 is used to drive the switching tube Q1, so as to ensure a fast switching speed of the switching tube Q1, thereby achieving a fast response of the light source 3.

The linear voltage stabilizing circuit 1 and the control circuit 2 are mutually independent and are respectively connected with the light source 3, so that the linear voltage stabilizing circuit 1 is always in a working state and is not influenced by the control circuit 2, the response time is effectively shortened, the control circuit 2 independently controls the starting and the closing of the light source 3, the rapid reaction of the light source 3 can be realized, the light source 3 is automatically closed when no signal is input, the light source 3 is automatically started after a trigger signal is received, and the service life of the light source 3 is effectively prolonged.

In the description of the present invention, it is to be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate orientations or positional relationships, are used based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and for the simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

While the utility model has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims

1. The analog controller is characterized by comprising a linear voltage stabilizing circuit (1), a control circuit (2) and a light source (3), wherein the linear voltage stabilizing circuit (1) and the control circuit (2) are respectively connected with the light source (3), the linear voltage stabilizing circuit (1) comprises a linear voltage regulator U1, an output end OUT of a linear voltage regulator U1 is connected with the light source (3), the control circuit (2) comprises a switch tube Q1 and a driving unit, a grid electrode of the switch tube Q1 is connected with the driving unit, and a drain electrode and a source electrode are respectively connected with the light source (3) and the ground.

2. The analog controller according to claim 1, wherein the driving unit is a gate driver U2, the input pin IN of the gate driver U2 is connected to a trigger signal, and the output pin OUT of the gate driver U2 is connected to the gate of the switch tube Q1.

3. The analog controller of claim 2, wherein the VDD pin of the gate driver U2 is connected to a 15V power supply.

4. The analog controller of claim 2, wherein the gate driver U2 is model UCC 27324D.

5. The analog controller according to claim 1, wherein a diode D2 is provided between the regulation pin ADJ and the output terminal OUT of the linear regulator U1, and the diode D2 has an anode connected to the regulation pin ADJ and a cathode connected to the output terminal OUT.

6. The analog controller of claim 1, wherein a diode D1 is disposed between the input terminal IN and the output terminal OUT of the linear regulator U1, the diode D1 has an anode connected to the output terminal OUT and a cathode connected to the input terminal IN.

7. The analog controller of claim 1, wherein the switching transistor Q1 is a field effect transistor.

8. The analog controller of claim 1, wherein a non-polar capacitor C5 is provided between an adjustment pin ADJ of the linear regulator U1 and ground.

9. The analog controller of claim 1, wherein the linear regulator U1 has a capacitor C1 and a capacitor C2 connected IN parallel between its input terminal IN and ground.

10. The analog controller of claim 1, wherein the capacitor C3 and the capacitor C4 are connected in parallel between the output terminal OUT of the linear regulator U1 and ground.