CN214205886U - Signal input/output and light source controller - Google Patents
Signal input/output and light source controller Download PDFInfo
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- CN214205886U CN214205886U CN202023163518.7U CN202023163518U CN214205886U CN 214205886 U CN214205886 U CN 214205886U CN 202023163518 U CN202023163518 U CN 202023163518U CN 214205886 U CN214205886 U CN 214205886U
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- 238000005457 optimization Methods 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 description 7
- 239000011324 bead Substances 0.000 description 5
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Abstract
The utility model discloses a signal input/output and light source controller, including MCU module, RS422 communication module, power module, light source control module and relay drive module, the power module output is connected with MCU module and RS422 communication module respectively, the MCU module is connected with RS422 communication module and relay drive module respectively light source control module includes light source major loop module, light source current acquisition module, light source dimming control module and the quick bright switching module that goes out of light source, and input/output communication and light source control just can be realized to this structure only need a circuit board, and can realize direct control light source luminance and bright and go out through the control to the light source, and the current precision through the optimization to current acquisition circuit and control circuit simultaneously makes the control higher.
Description
Technical Field
The utility model relates to a protection field in the injection molding machine mould, in particular to signal input output and light source controller.
Background
At present, a signal input and output controller of a protection monitor in a mould on the market does not have a light source control system, and only can use a light source controller of a light source manufacturer on the market. The following inconveniences exist:
1. one host needs to be externally hung with two boxes (a signal input and output controller and a light source controller) for use. The installation and wiring are inconvenient and the cost is wasted.
2. A common constant current source is used. The host can not effectively control the light source, only can be normally on, and does not save energy. And the LED lamp bead has life-span restriction, and the life-span of LED lamp bead can sharply be reduced to often bright.
SUMMERY OF THE UTILITY MODEL
The technical problem of the utility model is to provide an energy-conserving, increase signal input output and light source controller in LED lamp pearl life-span.
This practical technical scheme who adopts of solving its technical problem is: the signal input/output and light source controller comprises an MCU module, an RS422 communication module, a power supply module, a light source control module and a relay drive module,
the output end of the power supply module is respectively connected with the MCU module and the RS422 communication module, and the MCU module and the RS422 communication module are respectively connected with the relay driving module;
the light source control module comprises a light source main loop module, a light source current acquisition module, a light source dimming control module and a light source fast on-off switching module;
the light source main loop module comprises an LED light source, the LED light source is connected with the cathode of the LED light source and is connected with an inductor L1, the other end of the inductor L1 is connected with the D pole of a high-power MOS tube U1, the S pole of the high-power MOS tube U1 is connected with a resistor R17, and the other end of the resistor R17 is grounded;
the light source current acquisition module comprises a current acquisition chip U7 connected with a resistor R17, and the current acquisition chip U7 is connected with the MCU module;
the light source dimming control module comprises a triode Q1, a triode Q3 and a triode Q5, the MCU module is connected with a B pole of the triode Q3, a C pole of the triode Q3 is connected with a B pole of the triode Q1 and a B pole of the triode Q5, and E poles of the triode Q1 and the triode Q5 are connected with a driving end of a high-power MOS tube U1;
the light source fast on-off switching module comprises a triode Q7 electrically connected with the MCU module, and the C pole of the triode Q7 is connected with the B poles of the triode Q1 and the triode Q5.
Further, the method comprises the following steps: still include light source short circuit detection module, light source short circuit detection module includes resistance R7 and resistance R14 with the series connection of light source major loop module, resistance R14 one end ground connection, the resistance R14 other end is connected with optoelectronic coupler U5's input, U5's output is connected with the input of MCU module.
Further, the method comprises the following steps: and a power supply voltage reduction chip U16 and a voltage regulation chip U17 are arranged between the power supply module and the MCU module and between the power supply module and the RS422 communication module.
Further, the method comprises the following steps: the relay driving module comprises a photoelectric coupler U11 and a photoelectric coupler U12 which are connected with the output end of the MCU module, and the output ends of the photoelectric coupler U11 and the photoelectric coupler U12 are connected with the driving end of the relay.
The beneficial effects of this utility are: input and output communication and light source control just can be realized to this structure only need a circuit board, and can realize direct control light source luminance and bright and go out through the control to the light source, simultaneously through the optimization to current acquisition circuit and control circuit, make the current precision of control higher.
Drawings
Fig. 1 is a schematic diagram of a signal input/output and light source controller module.
Fig. 2 is a circuit diagram of a light source control module.
Fig. 3 is a circuit diagram of the RS422 communication module.
Fig. 4 is a peripheral circuit of the MCU module.
FIG. 5 is a schematic diagram of a power supply voltage step-down circuit.
Fig. 6 is a schematic diagram of a relay driver module.
Fig. 7 is a first signal input isolation circuit.
Fig. 8 is a first signal input isolation circuit.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as limited to those embodiments set forth herein.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The signal input/output and light source controller shown in fig. 1 is used for an injection molding machine, and comprises an MCU module, an RS422 communication module, a power module, a light source control module and a relay driving module, wherein the MCU module can be: the STM32F103C8T6,
the output end of the power supply module is respectively connected with the MCU module and the RS422 communication module, the MCU module is respectively connected with the RS422 communication module and the relay driving module, the MCU module in the structure is used for analyzing the command sent by the in-mold protection system host of the injection molding machine and controlling the output relay to achieve the purpose of controlling the injection molding machine,
as shown in fig. 2, the light source control module includes a light source main loop module, a light source current collection module, a light source dimming control module and a light source fast on/off switching module, the circuit can analyze the command of controlling the light source sent by the injection molding machine in-mold protection system host, control the light source connected with the output connector, complete the host to adjust the brightness of the light source, and control the on/off of the light source, when the host controls the light source to be in a normally on state, the circuit board realizes closed-loop constant-current control according to the signal fed back by the current collection circuit connected in series in the light source loop, so that the brightness of the light source is kept consistent, and the misinformation of the injection molding machine in-mold protection system host is reduced, and the specific circuit is as follows:
the light source main loop module comprises an LED light source, the LED light source is connected with the cathode of the LED light source and is connected with an inductor L1, the other end of the inductor L1 is connected with the D pole of a high-power MOS tube U1, the S pole of the high-power MOS tube U1 is connected with a resistor R17, and the other end of the resistor R17 is grounded;
the light source current acquisition module comprises a current acquisition chip U7 connected with a resistor R17, and the model of the current acquisition chip U7 can be as follows: the current acquisition chip U7 is connected with the MCU module, the current acquisition circuit mainly monitors the voltage on the resistor R17, amplifies a currently monitored voltage signal and converts the amplified voltage signal into a digital signal, and the MCU module is communicated with the current acquisition chip U7 through the IIC controller to read the current value of a U7 current value register in real time to finish current acquisition and monitoring;
the light source dimming control module comprises a triode Q1, a triode Q3 and a triode Q5, the MCU module is connected with the B pole of the triode Q3, the C pole of the triode Q3 is connected with the B poles of a triode Q1 and a triode Q5, the E electrodes of the triode Q1 and the triode Q5 are connected with the driving end of the high-power MOS tube U1, and when the high-power MOS tube U1 works, when the PWM signal output at the output end of the MCU module is at a high level, the triode Q3 is switched on, the triode Q1 is switched off, the triode Q5 is switched on, the high-power MOS tube U1 is switched off, the light source control main loop is switched off, the LED lamp beads do not emit light, when the PWM output of the output end of the MCU module is low level, the triode Q3 is cut off, the triode Q1 is conducted, the triode Q5 is cut off, the high-power MOS tube U1 is opened, the light source controls the main loop module to be switched on, the LED lamp bead emits light, the time for controlling the opening/closing of the high-power MOS tube in a reciprocating way is different, so that the light source dimming is realized;
the light source fast on-off switching module comprises a triode Q7 connected with an MCU module, the C pole of the triode Q7 is connected with the B poles of the triode Q1 and the triode Q5, during work, when the MCU module controls the light source fast on-off pin to be at a high level, the triode Q7 is conducted, the triode Q1 is directly caused to be always cut off, the triode Q5 is always conducted, the control end of the high-power MOS tube U1 is always at a low level, the light source control main loop is disconnected, the LED lamp bead does not emit light, when the MCU module controls the light source fast on-off pin to be at a low level, the triode Q7 is cut off, and the pulse width control light source output by the single chip PWM control pin is turned on and off.
On the basis, still include light source short circuit detection module, light source short circuit detection module includes resistance R7 and resistance R14 with the power module series connection, resistance R14 one end ground connection, the resistance R14 other end is connected with optoelectronic coupler U5's input, the output of U5 is connected with the output of MCU module, in operation, when external light source appears the short circuit, 24V voltage flows through resistance R7, resistance R14 partial pressure, and resistance R14 is used for driving optoelectronic coupler U5 input to ground voltage, and when appearing the short circuit, optoelectronic coupler U5 output switches on, and the singlechip discerns the light source short circuit, controls high-power MOS pipe U1 disconnection immediately to play the effect of light source short circuit protection.
On the basis, a power supply voltage reduction chip U16 and a voltage stabilization chip U17 are arranged between the power supply module and the MCU module and between the power supply module and the RS422 communication module, and 24V voltage can be reduced to 3.3V to supply power for the MCU module, the RS422 communication chip and the current acquisition chip.
On the basis, the relay driving module comprises a photoelectric coupler U11 and a photoelectric coupler U12 which are connected with the output end of the MCU module, and the output ends of the photoelectric coupler U11 and the photoelectric coupler U12 are connected with the driving end of the relay, so that the modules of the injection molding machine are controlled.
On the basis, as shown in fig. 4, the peripheral circuit of the MCU module includes a crystal oscillator Y1 for providing a reference clock with a frequency of 8MHZ, a power-on automatic reset circuit composed of a resistor R62 and a capacitor C8, and an MCU module start-up selection circuit composed of a resistor R63, a jumper connector J6, a resistor R37, and a resistor R45, and configured to select the MCU module to start up from a serial port or an internal FLASH.
On the basis, as shown in fig. 3, the RS422 communication module includes an RS422 chip, an external RS422 signal is respectively current-limited through a resistor R48, a resistor R50, a resistor R51 and a resistor R52, and is connected to pins 5, 6, 7 and 8 of the RS422 chip, and pins 2 and 3 of the RS422 chip are connected to the MCU module for communication and data transmission.
In addition, as shown in fig. 7 and 8, an external input voltage signal is connected to the bidirectional photoelectric couplers U15 and U13 through the current limiting resistor, and output terminals of the bidirectional photoelectric couplers U15 and U13 are connected to an IO port of the single chip microcomputer for input.
The above-mentioned embodiments, the purpose, technical solutions and advantages of the present invention have been described in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. Signal input output and light source controller, its characterized in that: comprises an MCU module, an RS422 communication module, a power supply module, a light source control module and a relay driving module,
the output end of the power supply module is respectively connected with the MCU module and the RS422 communication module, and the MCU module and the RS422 communication module are respectively connected with the relay driving module;
the light source control module comprises a light source main loop module, a light source current acquisition module, a light source dimming control module and a light source fast on-off switching module;
the light source main loop module comprises an LED light source, the LED light source is connected with the cathode of the LED light source and is connected with an inductor L1, the other end of the inductor L1 is connected with the D pole of a high-power MOS tube U1, the S pole of the high-power MOS tube U1 is connected with a resistor R17, and the other end of the resistor R17 is grounded;
the light source current acquisition module comprises a current acquisition chip U7 connected with a resistor R17, and the current acquisition chip U7 is electrically connected with the MCU module;
the light source dimming control module comprises a triode Q1, a triode Q3 and a triode Q5, the MCU module is connected with a B pole of the triode Q3, a C pole of the triode Q3 is connected with a B pole of the triode Q1 and a B pole of the triode Q5, and E poles of the triode Q1 and the triode Q5 are connected with a driving end of a high-power MOS tube U1;
the light source fast on-off switching module comprises a triode Q7 connected with the MCU module, and the C electrode of the triode Q7 is connected with the B electrodes of the triode Q1 and the triode Q5.
2. A signal input output and light source controller as claimed in claim 1 wherein: still include light source short circuit detection module, light source short circuit detection module includes resistance R7 and resistance R14 with the power module series connection, resistance R14 one end ground connection, the resistance R14 other end is connected with optoelectronic coupler U5's input, U5's output is connected with the input of MCU module.
3. A signal input output and light source controller as claimed in claim 1 wherein: and a power supply voltage reduction chip U16 and a voltage stabilization chip U17 are arranged between the power supply module and the MCU module and between the power supply module and the RS422 communication module.
4. A signal input output and light source controller as claimed in claim 1 wherein: the relay driving module comprises a photoelectric coupler U11 and a photoelectric coupler U12 which are connected with the output end of the MCU module, and the output ends of the photoelectric coupler U11 and the photoelectric coupler U12 are connected with the driving end of the relay.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023163518.7U CN214205886U (en) | 2020-12-24 | 2020-12-24 | Signal input/output and light source controller |
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| CN202023163518.7U CN214205886U (en) | 2020-12-24 | 2020-12-24 | Signal input/output and light source controller |
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| CN214205886U true CN214205886U (en) | 2021-09-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112566301A (en) * | 2020-12-24 | 2021-03-26 | 苏州光子云光电有限公司 | Signal input/output and light source controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112566301A (en) * | 2020-12-24 | 2021-03-26 | 苏州光子云光电有限公司 | Signal input/output and light source controller |
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Effective date of registration: 20220117 Address after: 215000 Room 401, building 6, Xiangyue garden, Huaqiao Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Huang Qingwen Address before: 215000 room 1, building 1, Lide enterprise home district, Huaqiao Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: SUZHOU GUANGZIYUN PHOTOELECTRIC Co.,Ltd. |