a safety light curtain
A technology of safety light curtain and circuit, which is applied in the field of safety light curtain, can solve the problems that the screen door cannot be reversed and opened in time due to misoperation, cannot realize real-time self-inspection and output control, and is dangerous, so as to achieve effective control and diagnosis functions, and improve The ability to resist external light interference and the effect of strong electromagnetic compatibility
Active Publication Date: 2020-07-10
上海索迪龙自动化股份有限公司
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- Application Information
AI Technical Summary
Problems solved by technology
[0003] If the output control unit of the light curtain fails, it may cause the misoperation of the screen door and cannot be reversed and opened in time, causing danger, etc.
Existing light curtain products cannot realize effective real-time self-inspection and output control, and need to be improved to improve safety and reliability
Method used
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Embodiment Construction
[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0029] Such as figure 1 As shown, this embodiment discloses a safety light curtain, including an infrared transmitter 1 and an infrared receiver 2, the infrared transmitter 1 is a single-channel system, mainly composed of a first power supply module 11 and a transmitting module for emitting infrared signals composition, wherein the transmitting module includes transmitting MCU12, transmitting signal processing circuit 13, periodic scanning module 15 and signal transmitting circuit 14, transmitting signal processing circuit 13 is connected to signal transmitting circuit 14 to process the transmitting signal output by transmitting MCU12 and send it to the signal A sending circuit 14 , the clock terminal of the signal sending circuit 14 is connected to the transmitting MCU 12 to control the start of transmitting through the transmitting ...
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The invention provides a safety light curtain, which includes an infrared transmitter and an infrared receiver. The infrared transmitter includes a first power supply module and a transmitting module. The infrared receiver includes a second power supply module, a signal receiving and processing module and a dual power supply module connected in sequence. Channel control module, each control module includes a control MCU, output control circuit and output detection circuit. Both control MCUs are connected to the signal receiving and processing module. The two control MCUs are respectively connected to the output control circuit of the corresponding channel to provide The output control circuit outputs a control signal, and each output detection circuit is connected to the output control circuit and control MCU of the corresponding channel, so that each channel detects faults on the output control circuit through the output detection circuit and feeds back to the corresponding control MCU. The invention can realize effective control and diagnosis functions; from detection to output, it is a dual-channel self-check and mutual check, and the failure of a single component will not lead to the loss of safety functions, ensuring safety.
Description
technical field [0001] The invention belongs to the technical field of safety light curtains, in particular to a safety light curtain. Background technique [0002] The safety light curtain consists of an infrared transmitter and an infrared receiver, which are installed on both sides of the screen door or elevator door, equipment door, etc. The infrared transmitter can emit infrared detection beams, and the infrared receiver can receive signals. When an object is blocked, the infrared receiver cannot detect the beam signal sent by the transmitter, and it can feed back to the control unit, and the control unit outputs a control signal to perform actions such as reversing and opening the closing screen door. [0003] If the output control unit of the light curtain fails, it may cause the malfunction of the screen door and fail to reverse and open in time, causing danger. Existing light curtain products cannot realize effective real-time self-inspection and output control, an...
Claims
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IPC IPC(8): E05F15/40E05F15/43
CPCE05F15/40E05F15/43E05F2015/434E05Y2400/508E05Y2900/404E05Y2900/104E05Y2900/132E05Y2999/00
Inventor 邓志才陈坤速
Owner 上海索迪龙自动化股份有限公司