Laser cleaning safety control circuit

Abstract

The utility model provides a laser cleaning safety control circuit which comprises a control module, a digital displayer, a laser distance measuring sensor, a wireless transmitting module, a wireless receiving module, an infrared receiving sensor, an enabling trigger circuit module and a driving circuit module. The control module is electrically connected with the digital display, the laser distance measuring sensor, the wireless transmitting module, the infrared receiving sensor and the enabling trigger circuit module, the wireless transmitting module is electrically connected with the wireless receiving module, and the wireless receiving module is electrically connected with the driving circuit module. The driving circuit module is electrically connected with a laser transmitter, and the enabling trigger circuit module is electrically connected with the driving circuit module, so that the laser transmitter is controlled to work within a safe distance, personal injury caused by the laser transmitter is avoided, and safety accidents are prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser cleaning technical field especially, relates to a laser cleaning safety control circuit. BACKGROUND

[0002] Laser cleaning technology refers to the high-energy laser irradiation workpiece surface, makes the dirt, rust spot or coating of workpiece surface instantaneous evaporation or peeling, high-speed effective cleaning object surface attachment or surface coating, thereby reaches the clean technological process.

[0003] But laser cleaning technology in the application control, its control mode is through PC or industrial computer setting parameter issue to control card, realizes the control of laser emitter through control card, and lacks the foolproof measure in the laser emitter cleaning process, is easy to cause the safety accident to the operator in use.

[0004] Therefore, it is necessary to provide a laser cleaning safety control circuit to overcome the above-mentioned defects. UTILITY MODEL CONTENTS

[0005] The utility model discloses a laser cleaning safety control circuit, realizes the control of laser emitter in the safe distance work, avoids the personal injury of laser emitter, is favorable to preventing the safety accident.

[0006] In order to realize the above-mentioned purpose, the technical scheme provided by the utility model is realized as follows: a laser cleaning safety control circuit, comprising: control module, digital display, laser ranging sensor, wireless transmitting module, wireless receiving module, infrared receiving sensor, enable trigger circuit module and drive circuit module;

[0007] The control module is electrically connected with the digital display, laser ranging sensor, wireless transmitting module, infrared receiving sensor and enable trigger circuit module, the wireless transmitting module is electrically connected with the wireless receiving module, the wireless receiving module is electrically connected with the drive circuit module, the drive circuit module is electrically connected with the laser emitter, and the enable trigger circuit module is electrically connected with the drive circuit module.

[0008] Preferably, the enable trigger circuit module comprises a current-limiting resistor R9, a pull-down resistor R8, a transistor Q3 and a terminal P2, a first end of the current-limiting resistor R9 is electrically connected with the control module, a second end of the current-limiting resistor R9 is electrically connected with a first end of the pull-down resistor R8 and a base of the transistor Q3, a second end of the pull-down resistor R8 is electrically connected with an emitter of the transistor Q3 and grounded, a collector of the transistor Q3 is electrically connected with a No.1 interface of the terminal P2, a No.2 interface and a No.3 interface of the terminal P2 are grounded, and a No.4 interface and a No.5 interface of the terminal P2 are connected with a 5V power supply.

[0009] Preferably, the laser cleaning safety control circuit further comprises a filter circuit module, the filter circuit module is electrically connected with the control module, and the filter circuit module is further electrically connected with an external 5V power supply.

[0010] Preferably, the laser cleaning safety control circuit further comprises a step-down circuit module, and the step-down circuit module is electrically connected with the wireless receiving module.

[0011] Preferably, the step-down circuit module comprises a step-down module U3, a polarized capacitor C1, a resistor R5 and a light-emitting diode LED3.

[0012] A VIN+ pin of the step-down module U3 is electrically connected with a 24V power supply, a VOUT+ pin of the step-down module U3 is electrically connected with a positive electrode of the polarized capacitor C1, a first end of the resistor R5, a VCC pin of the wireless receiving module and an external power supply VCC, and the step-down module U3 is electrically connected with a negative electrode of the polarized capacitor, a cathode of the light-emitting diode LED3 and the wireless receiving module.

[0013] Preferably, the driving circuit module comprises a current-limiting resistor R10, a transistor Q2, a pull-down resistor R7, a relay RLY2, a rectifier diode D10, a current-limiting resistor R6 and an LED4.

[0014] A first end of the current-limiting resistor R10 is electrically connected with a D3 pin of the wireless receiving module, a second end of the current-limiting resistor R10 is electrically connected with a base of the transistor Q2 and a first end of the pull-down resistor R7, a collector of the transistor Q2 is electrically connected with a first end of a coil of the relay RLY2, an anode of the rectifier diode D10 and a first end of the current-limiting resistor R6, an emitter of the transistor Q2 is electrically connected with a second end of the pull-down resistor R7 and grounded,

[0015] The cathode of the rectifier diode D10 is electrically connected to the second end of the coil of the relay RLY2 and is electrically connected to the external power supply VCC. The second end of the current limiting resistor R6 is electrically connected to the cathode of the light-emitting diode. The anode of the light-emitting diode is electrically connected to the external power supply VCC. The relay RLY2 is electrically connected to a terminal U8. The laser emitter is electrically connected to the relay RLY2 through the terminal U8.

[0016] Compared with existing technologies, the advantages are as follows: When the laser distance information contained in the laser distance signal detected by the laser rangefinder exceeds the preset safe distance threshold, the control module sends a control signal to the wireless transmission module. After receiving the control signal, the wireless receiving module outputs a control signal to the drive circuit module, causing the transistor Q2 to cut off the coil circuit of the relay RLY2 in the drive circuit module. The relay RLY2 then disconnects, causing the laser transmitter connected to the relay RLY2 in the drive circuit module to stop working. This achieves the goal of controlling the laser transmitter to work within a safe distance, avoiding personal injury caused by the laser transmitter, and helping to prevent safety accidents.

[0017] Other features and advantages of this invention will be set forth in the following description, and in part will be apparent from the description, or may be learned by practice of the invention. The features and advantages of this invention may be realized and obtained by means of the elements and combinations specifically pointed out in the appended claims. These and other features of this invention will become more apparent from the following description and the appended claims, or may be learned by practice of the embodiments described herein. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the laser cleaning safety control circuit of this utility model.

[0020] Figure 2 for Figure 1 The diagram shows a circuit diagram of the laser cleaning safety control circuit. Detailed Implementation

[0021] In order to make the purpose, technical scheme and beneficial technical effects of the utility model clearer and more understandable, the utility model will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described in the specification are only for the purpose of explaining the utility model and are not intended to limit the utility model.

[0022] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0023] It should also be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] Please refer to Figures 1 to 2 The utility model provides a kind of laser cleaning safety control circuit, comprising: control module, digital display, laser ranging sensor, wireless transmitting module, wireless receiving module, infrared receiving sensor, enable trigger circuit module and drive circuit module;

[0025] The control module is electrically connected with digital display, laser ranging sensor, wireless transmitting module, infrared receiving sensor and enable trigger circuit module, the wireless transmitting module is electrically connected with wireless receiving module, the wireless receiving module is electrically connected with drive circuit module, laser emitter is electrically connected on the drive circuit module, and the enable trigger circuit module is electrically connected with drive circuit module.

[0026] It should be noted that in the present embodiment, the control module can be a single-chip microcomputer, and its model can be STC8H4K64TL-45I-LQFP32;The model of the wireless sending module can be DTX1K.

[0027] When the laser emitter generates laser light for laser cleaning, the infrared receiving sensor detects the laser light and outputs a laser detection signal to the control module, the laser ranging sensor detects the distance information of the laser light and outputs a laser distance signal to the control module, the control module receives the laser detection signal and the laser distance signal and outputs an enable signal to the enable trigger circuit module, and the control module sends the laser detection signal and the laser distance signal to the digital display, which displays the laser information and the laser distance information.

[0028] If the laser distance information contained in the laser distance signal detected by the laser ranging sensor is within the preset safety distance threshold, the control module sends a high-level signal to the wireless transmitting module, the wireless transmitting module sends a wireless signal to the wireless receiving module when receiving the high-level signal sent by the control module, and the wireless receiving module outputs a high-level signal to the driving circuit module after receiving the wireless signal, so that the laser emitter connected to the driving circuit module works normally.

[0029] If the laser distance information contained in the laser distance signal detected by the laser ranging sensor exceeds the preset safety distance threshold, the control module sends a control signal to the wireless transmitting module, the wireless transmitting module sends a wireless signal to the wireless receiving module when receiving the control signal sent by the control module, and the wireless receiving module outputs a control signal to the driving circuit module after receiving the wireless signal, so as to cut off the driving circuit module, and the control module also sends an enable signal to the enable trigger circuit module after receiving the laser detection signal and the laser distance signal, so as to stop the laser emitter connected to the driving circuit module from working.

[0030] In a preferred embodiment, the enable trigger circuit module comprises a current-limiting resistor R9, a pull-down resistor R8, a transistor Q3, and a terminal P2, the first end of the current-limiting resistor R9 is electrically connected to the control module, the second end of the current-limiting resistor R9 is electrically connected to the first end of the pull-down resistor R8 and the base of the transistor Q3, the second end of the pull-down resistor R8 is electrically connected to the emitter of the transistor Q3 and grounded, the collector of the transistor Q3 is electrically connected to the 1st interface of the terminal P2, the 2nd and 3rd interfaces of the terminal P2 are grounded, and the 4th and 5th interfaces of the terminal P2 are connected to a 5V power supply.

[0031] When the control module U12 sends an enable signal to the enable trigger circuit module, the transistor Q3 is turned on to transmit the enable signal to the laser emitter.

[0032] In a preferred embodiment, the laser cleaning safety control circuit further comprises a filter circuit module, which is electrically connected with the control module, and which is also electrically connected with the external 5V power supply. The filter circuit module is mainly composed of a capacitor, an inductor and a resistor electrically connected, for filtering out the noise of the external power supply before supplying power to the control module, so as to improve the stability and reliability of the operation of the control module. It should be noted that in the present embodiment, the filter circuit module can be a power filter.

[0033] In a preferred embodiment, the laser cleaning safety control circuit further comprises a step-down circuit module, which is electrically connected with the wireless receiving module, and which is used to provide the wireless receiving module with a working power supply after stepping down the external power supply.

[0034] Further, the step-down circuit module comprises a step-down module U3, a polar capacitor C1, a resistor R5 and a light-emitting diode LED3.

[0035] The VIN+ pin of the step-down module U3 is electrically connected with the 24V power supply, the VOUT+ pin of the step-down module U3 is electrically connected with the positive pole of the polar capacitor C1, the first end of the resistor R5, the VCC pin of the wireless receiving module and the external power supply VCC, the GND pin of the step-down module U3 is electrically connected with the negative pole of the polar capacitor, the cathode of the light-emitting diode LED3, the SLP pin of the wireless receiving module and the GND pin of the wireless receiving module, and the ANT pin of the wireless transmitting module is electrically connected with the ANT pin of the wireless receiving module. The 24V power supply is stepped down to 5V by the step-down module U3 and then provided to the wireless receiving module.

[0036] In a preferred embodiment, the driving circuit module comprises a current-limiting resistor R10, a triode Q2, a pull-down resistor R7, a relay RLY2, a rectifier diode D10, a current-limiting resistor R6 and an LED4.

[0037] The first end of the current-limiting resistor R10 is electrically connected with the D3 pin of the wireless receiving module, the second end of the current-limiting resistor R10 is electrically connected with the base of the triode Q2 and the first end of the pull-down resistor R7, the collector of the triode Q2 is electrically connected with the first end of the coil of the relay RLY2, the anode of the rectifier diode D10 and the first end of the current-limiting resistor R6, the emitter of the triode Q2 is electrically connected with the second end of the pull-down resistor R7 and grounded,

[0038] The cathode of the rectifier diode D10 is electrically connected with the second end of the coil of the relay RLY2 and with the external power supply VCC, the second end of the current-limiting resistor R6 is electrically connected with the cathode of the light-emitting diode, the anode of the light-emitting diode is electrically connected with the external power supply VCC, the contact 3 and the contact 5 of the relay RLY2 are electrically connected with the terminal U8, the laser emitter is electrically connected with the relay RLY2 through the terminal U8, and the collector of the transistor Q3 of the enabling trigger circuit module is electrically connected with the contact 3 of the relay RLY2.

[0039] The control module sends a high-level signal to the wireless transmitting module, when the wireless transmitting module receives the high-level signal sent from the control module, the wireless transmitting module sends a wireless signal to the wireless receiving module, after the wireless receiving module receives the wireless signal, the wireless receiving module outputs a high-level signal to the driving circuit module through the D3 pin of the wireless receiving module, the relay RLY2 is energized after the transistor Q2 is turned on, the contact 3 of the relay RLY2 is closed with the contact 5, and the laser emitter connected with the relay RLY2 of the driving circuit module works normally.

[0040] If the laser distance information contained in the laser distance signal detected by the laser ranging sensor exceeds the preset safety distance threshold, the control module sends a control signal to the wireless transmitting module, when the wireless transmitting module receives the control signal sent from the control module, the wireless transmitting module sends a control signal to the wireless receiving module, after the wireless receiving module receives the control signal, the wireless receiving module outputs a control signal to the driving circuit module to make the transistor Q2 cut off the circuit of the coil of the relay RLY2 of the driving circuit module, the contact 3 of the relay RLY2 is disconnected with the contact 5,

[0041] The control module sends an enabling signal to the enabling trigger circuit module to transmit to the laser emitter, so that the laser emitter connected with the relay RLY2 of the driving circuit module stops working, the laser emitter is controlled to work within a safe distance, and the laser emitter is prevented from causing personal injury, so that safety accidents are prevented.

[0042] The utility model discloses not only limit to the description and embodiment described in the specification, therefore the person skilled in the art can easily realize additional advantages and modifications, and therefore the utility model is not limited to specific details, representative equipment and the drawing example shown and described here without departing from the general concept of the spirit and scope defined by the claims and equivalent range.

Claims

1. A laser cleaning safety control circuit, characterized by, The application relates to a laser cleaning safety control circuit. The control module is electrically connected with the digital display, the laser distance measuring sensor, the wireless transmitting module, the infrared receiving sensor and the enable trigger circuit module, the wireless transmitting module is electrically connected with the wireless receiving module, the wireless receiving module is electrically connected with the driving circuit module, the driving circuit module is electrically connected with the laser emitter, and the enable trigger circuit module is electrically connected with the driving circuit module. The enable trigger circuit module comprises a current-limiting resistor R9, a pull-down resistor R8, a triode Q3 and a terminal P2, the first end of the current-limiting resistor R9 is electrically connected with the control module, the second end of the current-limiting resistor R9 is electrically connected with the first end of the pull-down resistor R8 and the base of the triode Q3, the second end of the pull-down resistor R8 is electrically connected with the emitter of the triode Q3 and grounded, the collector of the triode Q3 is electrically connected with the No.1 interface of the terminal P2, the No.2 interface and the No.3 interface of the terminal P2 are grounded, and the No.4 interface and the No.5 interface of the terminal P2 are connected with a 5V power supply.

2. The laser cleaning safety control circuit of claim 1, wherein, The laser cleaning safety control circuit further comprises a filter circuit module, the filter circuit module is electrically connected with the control module, and the filter circuit module is further electrically connected with an external 5V power supply.

3. The laser cleaning safety control circuit of claim 1, wherein, The laser cleaning safety control circuit further comprises a step-down circuit module, and the step-down circuit module is electrically connected with the wireless receiving module.

4. The laser cleaning safety control circuit of claim 1, wherein, The step-down circuit module comprises a step-down module U3, a polar capacitor C1, a resistor R5 and a light-emitting diode LED3.

5. The laser cleaning safety control circuit of claim 4, wherein, The VIN+ pin of the step-down module U3 is electrically connected with a 24V power supply, the VOUT+ pin of the step-down module U3 is electrically connected with the positive pole of the polar capacitor C1, the first end of the resistor R5, the VCC pin of the wireless receiving module and an external power supply VCC, the step-down module U3 is electrically connected with the negative pole of the polar capacitor, the cathode of the light-emitting diode LED3 and the wireless receiving module. The driving circuit module comprises a current-limiting resistor R10, a triode Q2, a pull-down resistor R7, a relay RLY2, a rectifier diode D10, a current-limiting resistor R6 and an LED4.

6. The laser cleaning safety control circuit of claim 2, wherein, The first end of the current-limiting resistor R10 is electrically connected with the D3 pin of the wireless receiving module, the second end of the current-limiting resistor R10 is electrically connected with the base of the triode Q2 and the first end of the pull-down resistor R7, the collector of the triode Q2 is electrically connected with the first end of the coil of the relay RLY2, the anode of the rectifier diode D10 and the first end of the current-limiting resistor R6, the emitter of the triode Q2 is electrically connected with the second end of the pull-down resistor R7 and grounded, ​ The cathode of the rectifier diode D10 is electrically connected with the second end of the coil of the relay RLY2 and with the external power supply VCC, the second end of the current-limiting resistor R6 is electrically connected with the cathode of the light-emitting diode, the anode of the light-emitting diode is electrically connected with the external power supply VCC, the relay RLY2 is electrically connected with the wiring terminal U8, the laser emitter is electrically connected with the relay RLY2 through the wiring terminal U8, and the collector of the transistor Q3 of the enable trigger circuit module is electrically connected with the relay RLY2.

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