CN217384661U - Laser safety detection system and laser system - Google Patents
Laser safety detection system and laser system Download PDFInfo
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- CN217384661U CN217384661U CN202221016704.4U CN202221016704U CN217384661U CN 217384661 U CN217384661 U CN 217384661U CN 202221016704 U CN202221016704 U CN 202221016704U CN 217384661 U CN217384661 U CN 217384661U
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Abstract
The utility model relates to a laser safety inspection system and laser system. The laser safety detection system comprises a color wheel driving module, a laser driving module, an illumination induction module and a control unit, wherein the control unit is respectively connected with the color wheel driving module, the laser driving module and the illumination induction module; the color wheel driving module is used for detecting the running state of a color wheel motor, acquiring a normal running signal or an abnormal running signal according to the running state of the color wheel motor, and transmitting the normal running signal or the abnormal running signal to the control unit; the illumination induction module is used for detecting a laser illumination signal, acquiring a normal illumination signal or an abnormal illumination signal according to the laser illumination signal, and transmitting the normal illumination signal or the abnormal illumination signal to the control unit; the control unit is used for controlling the laser driving module to be opened according to the normal operation signal and the normal illumination signal, or controlling the laser driving module to be closed according to the abnormal operation signal or the abnormal illumination signal.
Description
Technical Field
The utility model relates to a laser technical field, more specifically relates to a laser safety inspection system and laser system.
Background
The laser lighting is a development technology of beam lighting, can overcome the defects of the traditional beam lighting, and generally utilizes a wavelength converter device to convert laser of a laser light source to form light rays of a wave band which is suitable for lighting characteristics, namely laser. The safety and reliability of the high-power laser in illumination are still required to be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at overcoming above-mentioned prior art's at least defect, provide a laser safety inspection system and laser system for improve the security and the reliability of laser illumination.
The technical scheme adopted by the utility model is that the laser safety detection system comprises a color wheel driving module, a laser driving module, an illumination induction module and a control unit, wherein the control unit is respectively connected with the color wheel driving module, the laser driving module and the illumination induction module;
the color wheel driving module is used for detecting the running state of a color wheel motor, acquiring a normal running signal or an abnormal running signal according to the running state of the color wheel motor, and transmitting the normal running signal or the abnormal running signal to the control unit; the illumination induction module is used for detecting a laser illumination signal, acquiring a normal illumination signal or an abnormal illumination signal according to the laser illumination signal, and transmitting the normal illumination signal or the abnormal illumination signal to the control unit; the control unit is used for controlling the laser driving module to be opened according to the normal operation signal and the normal illumination signal, and/or controlling the laser driving module to be closed according to the abnormal operation signal or the abnormal illumination signal.
When the color wheel driving module detects that the color wheel motor operates normally, a normal operation signal is formed and transmitted to the control unit, and when the illumination sensing module detects that the illumination signal of the laser module is lower than or equal to a set value, a normal illumination signal is formed and transmitted to the control unit, the control unit controls the laser driving module to be opened according to the normal operation signal and the normal illumination signal, and the laser module is driven to irradiate laser; when the color wheel driving module detects that the color wheel motor operates abnormally, an abnormal operation signal is transmitted to the control unit, the control unit controls the laser driving module to be closed according to the abnormal operation signal, the laser module does not emit laser, or when the illumination sensing module detects that the laser illumination signal of the laser module is higher than a set value, an abnormal illumination signal is transmitted to the control unit, the control unit controls the laser driving module to be closed according to the abnormal illumination signal, and the laser module does not emit laser.
Furthermore, the color wheel driving module comprises a color wheel motor driving chip, a port of the color wheel motor driving chip is connected with the color wheel motor and used for detecting the running state of the color wheel motor and acquiring a normal running signal or an abnormal running signal according to the running state of the color wheel motor, and a port of the color wheel motor driving chip is connected with the control unit and used for transmitting the normal running signal or the abnormal running signal to the control unit.
Furthermore, the color wheel driving module further comprises an indicating lamp and a warning lamp; the indicator light and the warning light are respectively connected with the control unit; the indicating lamp is used for indicating that the running state of the color wheel motor is normal, and the warning lamp is used for warning that the running state of the color wheel motor is abnormal.
Furthermore, the laser driving module comprises a driving unit and a switch unit, the driving unit is respectively connected with the control unit and the switch unit, and the control unit controls the on-off of the switch unit through the driving unit.
Further, the driving unit comprises a triode and a first resistor; the base electrode of the triode is connected with the control unit through the first resistor, the collector electrode of the triode is connected with the switch unit, and the emitting electrode of the triode is grounded.
Further, the switch unit includes relay, emitting diode and second resistance, the relay includes first port, second port, third port and fourth port, first port with emitting diode one end is connected, the emitting diode other end with second resistance one end is established ties, the second port with the second resistance other end is connected, the third port is connected with the laser module, the fourth port is connected with the power port of laser module.
Furthermore, the illumination induction module comprises a photosensitive diode and a divider resistor which are connected in series; the photosensitive diode is used for detecting the laser illumination intensity, acquiring a normal illumination signal or an abnormal illumination signal according to the laser illumination intensity, and transmitting the normal illumination signal or the abnormal illumination signal to the control unit; and the voltage dividing resistor is used for amplifying the voltage signal of the normal illumination signal or the abnormal illumination signal.
Further, the photodiode is provided with a filter which only transmits blue light.
The utility model adopts another technical proposal that the laser system comprises a laser module, a color wheel provided with a color wheel motor and a laser safety detection system; the laser driving module is connected with the laser module and used for driving the laser module to emit laser; the color wheel driving module is connected with the motor of the color wheel and used for driving the motor of the color wheel to rotate; the color wheel is used for converting laser emitted by the laser module into illumination light; the illumination induction module is arranged on the light path of the illumination light.
Further, the laser module includes power supply and laser lamp-house, power supply's one end with laser lamp-house is connected, power supply's the other end and laser drive module are connected.
Compared with the prior art, the beneficial effects of the utility model are that: the control unit receives a normal operation signal that the color wheel motor operates normally, and controls the laser driving module to be started after receiving a normal illumination signal that the illumination signal of the laser module is lower than or equal to a preset value, so that the laser driving module is driven to emit laser; the control unit receives abnormal operation signals of abnormal operation of the color wheel motor or abnormal illumination signals of the laser module higher than a preset value, and controls the laser driving module to be closed, and the laser module does not emit laser. When any abnormality of the running state of the color wheel motor or the illumination signal is detected, the laser module is opened or closed through the control unit, various hidden dangers that a laser system is burnt out and laser leakage damages an eye lamp are avoided, the protection purpose is achieved, and the safety and the reliability of laser illumination are improved.
Drawings
Fig. 1 is the circuit module structure diagram of the laser safety inspection system of the present invention.
Fig. 2 is a circuit connection structure diagram of the laser safety inspection system of the present invention.
Fig. 3 is a circuit structure diagram of the laser driving module of the present invention.
Reference numerals: 1. a color wheel driving module; 2. an illumination sensing module; 3. a control unit; 4. laser driver module.
Detailed Description
The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For the purpose of better illustrating the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1, this embodiment provides a laser safety detection system, which includes a color wheel driving module 1, a laser driving module 4, an illumination sensing module 2 and a control unit 3, where the control unit 3 is connected to the color wheel driving module 1, the laser driving module 4, and the illumination sensing module 2 respectively;
the color wheel driving module 1 is used for detecting the running state of a color wheel motor, acquiring a normal running signal or an abnormal running signal according to the running state of the color wheel motor, and transmitting the normal running signal or the abnormal running signal to the control unit 3;
the illumination induction module 2 is used for detecting a laser illumination signal, acquiring a normal illumination signal or an abnormal illumination signal according to the laser illumination signal, and transmitting the normal illumination signal or the abnormal illumination signal to the control unit 3; in this embodiment, the illumination signal is illumination intensity, and in other embodiments, the illumination signal may also be luminous flux, illumination intensity, or brightness.
The control unit 3 is configured to control the laser driving module 4 to be turned on according to the normal operation signal and the normal illumination signal, and/or is configured to control the laser driving module 4 to be turned off according to the abnormal operation signal or the abnormal illumination signal.
As shown in fig. 2, in the overall circuit connection structure of the laser safety detection system of the present embodiment, the connection pins of each circuit module can be referred to in fig. 2, and specifically, the following detailed description is made for each circuit module:
the control unit 3 is a single chip microcomputer control system U2 in this embodiment, and may be a microprocessor in other embodiments.
The color wheel driving module 1 includes a color wheel motor driving chip U1, and a plurality of resistors and capacitors of a peripheral circuit, the color wheel motor driving chip U1 may specifically adopt an FT8213 chip model, and the resistors (R1, R2, R3, R4, R5, R6, R7, R8, R11, R13, R14) and the capacitors (C1, C2, C3, C4, C5, C6, C7, C8, C9) are arranged according to actual circuit requirements, which is not specifically described in this embodiment.
One port of the color wheel motor driving chip U1 is connected to the color wheel motor for driving the color wheel motor to operate, and specifically supports a PWM input mode or a simulated speed regulation mode for controlling the setting input of the motor speed; the color wheel motor driving chip U1 has a port connected to the color wheel motor for detecting the operation state of the color wheel motor and acquiring a normal operation signal or an abnormal operation signal according to the operation state of the color wheel motor, and a port connected to the control unit 3 for transmitting the normal operation signal or the abnormal operation signal to the control unit 3, and as a preferred mode of this embodiment, specifically, outputs an electrical signal through a port FG in the color wheel motor driving chip, where the output electrical signal is 0V when the operation state of the color wheel motor is normal, and the output electrical signal is 3.3V when the operation state of the color wheel motor is abnormal.
Moreover, the color wheel driving module 1 further includes an indicator light and a warning light, the indicator light includes a light emitting diode D7 and a resistor R10, one end of the resistor R10 is connected to the control unit 3, the other end of the resistor R10 is connected in series with one end of the light emitting diode D7, and the other end of the light emitting diode D7 is grounded; the warning lamp comprises a light emitting diode D1 and a resistor R12, one end of the resistor R12 is connected with the control unit 3, the other end of the resistor R12 is connected with one end of the light emitting diode D1 in series, and the other end of the light emitting diode D1 is grounded. When the color wheel motor is detected to run normally, the control unit outputs high level to a light emitting diode D7 in the indicator light, and a light emitting diode D7 in the indicator light emits illumination; when the abnormal operation (locked rotation) of the color wheel motor is detected, the control unit outputs high level to the light emitting diode D1 in the warning lamp, and the light emitting diode D1 in the warning lamp emits illumination. The indicator light and the warning light can emit lights with the same color or lights with different colors, and preferably lights with different colors, for example, the indicator light is green light (green) and the warning light is red light (red).
The illumination induction module 2 comprises a photodiode D5 and a voltage division resistor R19 which are connected in series, one end of the photodiode D5 is connected with the control unit 3, the other end of the photodiode D5 is grounded and used for detecting the laser illumination intensity, acquiring a normal illumination signal or an abnormal illumination signal according to the laser illumination intensity and transmitting the normal illumination signal or the abnormal illumination signal to the control unit 3; one end of the divider resistor R19 is connected with voltage, and the other end of the divider resistor R19 is connected with one end of the photodiode D5 and is used for performing voltage signal amplification processing on the normal illumination signal or the abnormal illumination signal passing through the photodiode D5. Different from the light emitting diode, the photodiode D5 in the illumination sensing module 2 is provided with a filter only transmitting blue light, and since the leakage of blue light easily causes a potential safety hazard, the photodiode D5 used in the embodiment is only used for detecting the illumination intensity of blue light.
As shown in fig. 3, the laser driving module 4 includes a driving unit and a switch unit, the driving unit is connected to the control unit and the switch unit, and the control unit 3 controls the on/off of the switch unit through the driving unit.
The driving unit comprises a triode Q1 and a first resistor R18, the base B of the triode Q1 is connected with the control unit 3 through the first resistor R18, a specific connecting pin is ON/OFF, and the base B of the triode Q1 is grounded through a protection resistor R17; the collector C of the transistor Q1 is connected with the switch unit, and the emitter E of the transistor Q1 is grounded.
Wherein, the switch unit includes the relay and emitting diode D8 and second resistance R16, and emitting diode D8 is parallelly connected with the relay both ends after establishing ties with second resistance R16, and the relay specifically can adopt CX 1G 5CA-1A-E model, the relay includes first port, second port, third port and fourth port, first port with emitting diode one end is connected, the emitting diode other end with second resistance R16 one end is established ties, the second port with the second resistance R16 other end is connected, the third port is connected with the laser module, the fourth port is connected with the power port of laser module.
The principle that the control unit 3 controls the on-off of the switch unit through the driving unit is as follows: the photodiode D5 detects laser emitted by the laser module, a voltage signal, namely an illumination signal, is generated in the circuit, because the voltage signal is usually small, the voltage dividing resistor R19 needs to select a resistor with a large resistance value to divide the voltage with the photodiode D5, the voltage signal is amplified, the amplified voltage signal is fed back to the control unit 3, the control unit 3 outputs a high level to the first resistor R18, the first resistor R18 provides bias voltage for the base of the triode Q1, the triode Q1 is conducted, the level of the second port of the relay and the level of the resistor R16 are set to be a low level, at the moment, the relay closes the third port and the fourth port, the laser module is opened, and the light emitting diode D8 is lightened; and otherwise, the laser module is closed, so that the on-off control of the relay is realized. Can sensitively, accurately detect the laser light intensity of current laser module through the voltage variation between photodiode PD and the resistance R19, too high when the laser light intensity that detects laser module and jet out, the drive unit can make control feedback fast, cuts off the relay so that disconnection between laser module and the laser drive module 4, closes the laser module.
The principle of the laser safety detection system of the present embodiment is described with reference to the above circuit structure as follows: firstly, a color wheel driving chip U1 in a color wheel driving module 1 controls a color wheel motor to rotate through a PWM input mode, detects whether the color wheel motor is normally operated, and feeds back a normal operation signal (PWM signal) to a control unit 3 when detecting that the color wheel motor is normally rotated; secondly, a photosensitive diode D5 in the illumination induction module 2 detects whether the illumination intensity of the blue light in the laser is less than or equal to a set value, and when the illumination intensity is less than or equal to the set value, a normal illumination signal is fed back to the control unit 3; finally, the control unit 3 receives the normal operation signal and the normal illumination signal, controls the driving unit to switch on the switch unit, switches on the laser module, and enables the laser module to emit laser, and at the moment, the light emitting diode D7 in the indicator light and the light emitting diode D8 in the switch unit emit light.
When detecting that the color wheel motor rotates abnormally, feeding back an abnormal operation signal (PWM signal) to the control unit 3, or when detecting that the illumination intensity is greater than a set value, feeding back an abnormal illumination signal to the control unit 3; the control unit 3 controls the driving unit to be not connected or disconnected with the switch unit as long as receiving any one of the abnormal operation signal or the abnormal illumination signal, so that the laser module is not connected or disconnected, the laser module does not emit laser, and at the moment, the light emitting diode D1 in the warning lamp emits red light and the light emitting diode D8 in the switch unit does not emit light.
Example 2
The embodiment provides a laser system, which comprises a laser module, a color wheel provided with a color wheel motor and a laser safety detection system; the laser driving module 4 is connected with the laser module and is used for driving the laser module to emit laser; the color wheel driving module 1 is connected with the color wheel motor and used for driving the color wheel to rotate; the color wheel is used for converting laser emitted by the laser module into illumination light; the illumination induction module 2 is arranged on the light path of the illumination light.
This embodiment 2 is on embodiment 1 laser safety inspection system's basis, inserts the colour wheel and the laser module that are equipped with the colour wheel motor, wherein, colour wheel motor drive chip U1 accessible lamp plate and colour wheel motor's interface connection for the operation of drive colour wheel motor, thereby the drive colour wheel operation, colour wheel motor drive chip U1 specifically supports PWM input mode or the setting input of simulation speed governing mode control motor rotational speed, and embeds pull-up resistance under PWM input mode.
Laser module includes power supply and laser lamp-house, can adopt the 12V adapter to pass through the DC mouth for colour wheel drive module 1 and the normal work of the control unit 3 among the laser safety inspection system, and laser module power is provided by other power supply, and power supply's one end is connected with laser lamp-house, and power supply's the other end is connected with laser drive module 4. Further, the power supply supplies power only when the control unit detects a normal running signal of the color wheel motor.
The principle of controlling the laser module to emit laser light by using the laser safety detection system to detect the running state of the color wheel motor and the laser illumination intensity of the laser module is the same as the structure and the principle of embodiment 1, and reference may be made to embodiment 1 specifically, which is not described in detail in this embodiment.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (10)
1. A laser safety detection system is characterized in that,
comprises a color wheel driving module, a laser driving module, an illumination sensing module and a control unit,
the control unit is respectively connected with the color wheel driving module, the laser driving module and the illumination induction module;
the color wheel driving module is used for detecting the running state of a color wheel motor, acquiring a normal running signal or an abnormal running signal according to the running state of the color wheel motor, and transmitting the normal running signal or the abnormal running signal to the control unit;
the illumination induction module is used for detecting a laser illumination signal, acquiring a normal illumination signal or an abnormal illumination signal according to the laser illumination signal, and transmitting the normal illumination signal or the abnormal illumination signal to the control unit;
the control unit is used for controlling the laser driving module to be opened according to the normal operation signal and the normal illumination signal, and/or controlling the laser driving module to be closed according to the abnormal operation signal or the abnormal illumination signal.
2. The laser safety detection system of claim 1, wherein the color wheel driving module comprises a color wheel motor driving chip,
and one port of the color wheel motor driving chip is connected with the color wheel motor and used for detecting the running state of the color wheel motor and acquiring a normal running signal or an abnormal running signal according to the running state of the color wheel motor, and the other port of the color wheel motor driving chip is connected with the control unit and used for transmitting the normal running signal or the abnormal running signal to the control unit.
3. The laser safety detection system according to claim 1,
the color wheel driving module also comprises a prompt lamp and a warning lamp;
the prompting lamp and the warning lamp are respectively connected with the control unit;
the warning light is used for warning that the running state of the color wheel motor is abnormal.
4. The laser safety detection system according to claim 1,
the laser driving module comprises a driving unit and a switch unit,
the driving unit is respectively connected with the control unit and the switch unit, and the control unit controls the on-off of the switch unit through the driving unit.
5. The laser safety detection system according to claim 4,
the driving unit comprises a triode and a first resistor;
the base electrode of the triode is connected with the control unit through the first resistor, the collector electrode of the triode is connected with the switch unit, and the emitting electrode of the triode is grounded.
6. The laser safety detection system according to claim 4,
the switch unit comprises a relay, a light emitting diode and a second resistor, the relay comprises a first port, a second port, a third port and a fourth port, the first port is connected with one end of the light emitting diode, the other end of the light emitting diode is connected with one end of the second resistor in series, the second port is connected with the other end of the second resistor, the third port is connected with the laser module, and the fourth port is connected with a power port of the laser module.
7. The laser safety detection system according to claim 1,
the illumination induction module comprises a photosensitive diode and a divider resistor which are connected in series;
the photosensitive diode is used for detecting the laser illumination intensity, acquiring a normal illumination signal or an abnormal illumination signal according to the laser illumination intensity, and transmitting the normal illumination signal or the abnormal illumination signal to the control unit;
and the divider resistor is used for amplifying the voltage signal of the normal illumination signal or the abnormal illumination signal.
8. The laser safety detection system according to claim 7,
the photodiode is provided with a filter which only transmits blue light.
9. A laser system, characterized in that,
the laser safety detection system comprises a laser module, a color wheel provided with a color wheel motor and the laser safety detection system as claimed in any one of claims 1 to 8;
the laser driving module is connected with the laser module and used for driving the laser module to emit laser;
the color wheel driving module is connected with the color wheel motor and used for driving the color wheel to rotate;
the color wheel is used for converting laser emitted by the laser module into illumination light;
the illumination induction module is arranged on the light path of the illumination light.
10. The laser system according to claim 9, wherein the laser module comprises a power supply and a laser light source, one end of the power supply is connected to the laser light source, and the other end of the power supply is connected to the laser driving module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221016704.4U CN217384661U (en) | 2022-04-27 | 2022-04-27 | Laser safety detection system and laser system |
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| CN202221016704.4U CN217384661U (en) | 2022-04-27 | 2022-04-27 | Laser safety detection system and laser system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116183182A (en) * | 2023-04-23 | 2023-05-30 | 常州星宇车灯股份有限公司 | Detection system and detection method for automotive laser lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116183182A (en) * | 2023-04-23 | 2023-05-30 | 常州星宇车灯股份有限公司 | Detection system and detection method for automotive laser lamp |
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