CN203643620U - Photoelectric sensor capable of detecting transparent objects - Google Patents

Photoelectric sensor capable of detecting transparent objects Download PDF

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Publication number
CN203643620U
CN203643620U CN201320889088.8U CN201320889088U CN203643620U CN 203643620 U CN203643620 U CN 203643620U CN 201320889088 U CN201320889088 U CN 201320889088U CN 203643620 U CN203643620 U CN 203643620U
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CN
China
Prior art keywords
circuit
voltage
photoelectric sensor
microprocessor
output
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320889088.8U
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Chinese (zh)
Inventor
韦红光
谢勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI LANBAO SENSING TECHNOLOGY Co Ltd
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SHANGHAI LANBAO SENSING TECHNOLOGY Co Ltd
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Priority to CN201320889088.8U priority Critical patent/CN203643620U/en
Application granted granted Critical
Publication of CN203643620U publication Critical patent/CN203643620U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a photoelectric sensor capable of detecting transparent objects. The photoelectric sensor comprises a voltage conversion and output circuit, a microprocessor, an LED indicating circuit, a setting circuit, a receiving amplification gain adjustment circuit and a transmission driving circuit which are connected by an I/O bus, wherein the voltage conversion and output circuit is used for converting inputted 10-30V DC voltage into a group of 6.8V DC voltage and a group of 5V DC voltage so as to be used for providing power for a transmitting tube, the microprocessor and the receiving amplification gain adjustment circuit, the voltage conversion and output circuit comprises two paths of PNP output, the transmission driving circuit is used for transmitting red light, the transmitted light is returned by a reflector of the photoelectric sensor, one part of the returned light is transmitted to the receiving amplification gain adjustment circuit, the receiving amplification gain adjustment circuit amplifies signals, and the amplified signals are processed by the microprocessor, a corresponding operating mode is determined by the setting circuit, and the LED indicating circuit is used for indicating the current operating state.

Description

A kind of photoelectric sensor that detects transparent substance
Technical field
The utility model belongs to sensor technical field, particularly a kind of photoelectric sensor that detects transparent substance.
Background technology
Electro-optical pickoff has detection distance, detects the advantages such as kind of object is many and has been widely used in the occasion such as industrial automation, security protection, rises spacingly, and counting, detects the effect such as have or not.Electro-optical pickoff is divided into correlation type, scattered reflection type and retroreflecting type.On the object, transparent substance and the surveyed area that detect high reflectance, all there is certain defect in conventional retroreflecting type electro-optical pickoff, some can not detect the object of high reflectance, some can not detect transparent substance, some can not examine the nearer object of distance measuring sensor, namely has blind area.In addition, it is not high that conventional retroreflecting type electro-optical pickoff detects frequency, can not use in response time occasion faster.
Conventional retro-reflection optoelectronic sensor adopts discrete device to realize control, conventionally adopts digital circuit to produce pulse and controls transmitting.The signal receiving compares after triode exclusive disjunction amplifier amplifies, then output switching signal.In order to prevent external interference, conventional photoelectric sensor can add synchronizing signal for distinguishing the signal of whether launching for this product.Due to the restriction of discrete device cost, conventional photoelectric sensing does not possess signal stabilization instruction, and under-voltage instruction etc. generally only have output action instruction.
Transparent substance is because light transmission is better, less to light attenuation, and this just requires the action control point of switch in the time having or not transparent substance in critical conditions, once there be the variation of light, sensor just can output switch amount.Due to sensor and the difference of reflector installation site distance or the impact of environmental factor, this critical point also can be influenced, when particularly sensor and reflector position are nearer, signal intensity is large, receive signal and be tending towards saturated, entering of transparent substance changes the very difficult identification of the impact causing to signal amplitude, and this has just caused conventional sensor in the time detecting transparent substance, to have bottleneck.Uncontrollable due to factors such as conventional sensors transmit signal strength, gain of received signal, can only detect opaque article, has significant limitation detecting on transparent substance.
The retro-reflection optoelectronic sensor that adopts discrete device to realize is limited by device, and function ratio is more single, and failure rate is high, and degree of intelligence is low, without self-regulating function.Conventional retroreflecting type electro-optical pickoff cannot detect the object of high reflectance.Retroreflecting type electro-optical pickoff with polarization cannot detect transparent object.
Summary of the invention
The purpose of this utility model is to provide a kind of photoelectric sensor that detects transparent substance.
The technical solution of the utility model is, a kind of photoelectric sensor that detects transparent substance, described photoelectric sensor comprises with voltage transformation and output circuit, microprocessor, the LED indicating circuit of I/O bus connection, circuit is set, receives gain amplifier regulating circuit and transmitting driving circuit
Voltage transformation and output circuit, for 10~30V DC voltage of input being converted to two groups of DC voltage of 6.8V and 5V, are respectively used to power valve, microprocessor and the power supply of reception gain amplifier regulating circuit,
Voltage transformation and output circuit are realized two-way PNP output, transmitting driving circuit is for red-emitting, the light of launching is after reflector returns, a part passes to and receives gain amplifier regulating circuit, receive after gain amplifier regulating circuit amplifies signal and carry out signal processing to microprocessor, corresponding mode of operation is definite by circuit is set, and LED indicating circuit is used to indicate current duty.
The beneficial effects of the utility model are that this product has remote control function.This product not only can manually arrange mode of operation by the rotary coding switch on product, can also pass through control line, and the mode of operation of Long-distance Control sensor, is convenient to system maintenance in automated system while use.Can detect transparent object.Detection frequency is high.There is the switching frequency up to 1000Hz, can meet most detection occasion.
In use, understand the duty of sensor for ease of user, this product has action instruction, stable instruction, and meanwhile, this product also has indicating fault, as under-voltage instruction, short circuit instruction etc.Simple to operate, automaticity is high, raising efficiency.Not only can set by module practical function is set, all right Long-distance Control, reduces human cost, more can embody its advantage for the position of installation site direct control inconvenience.Detectable kind of object is many, saves user cost.Applied widely.Have very high detection frequency, inconvenience can meet the detection system of low speed, and can be applied to detection system at a high speed.
When system works voltage is during lower than normal working voltage scope or load short circuits, product can automatically shut down output, carries out LED failure warning, can facilitate user to find fast the sensor in abnormal operating state, thereby fix a breakdown, and enhances productivity.
Brief description of the drawings
Fig. 1 is the electrical structure block diagram of the utility model sensor
Embodiment
The utility model mainly by voltage transformation and output circuit, microprocessor, LED indicating circuit, circuit, receiving circuit, radiating circuit be set form, as shown in Figure 1.
Voltage transformation and output module are mainly used in the 10-30V DC voltage of input to convert to two groups of DC voltage of 6.8V and 5V, are respectively used to the power supply such as power valve and micro treatment module, receiver module and use.Output module is realized two-way PNP output.Transmitter module is for red-emitting, and the light of launching is after reflector returns, and a part passes to receiver module, and receiver module carries out signal processing to micro treatment module after signal is amplified.Corresponding mode of operation is definite by being located at module, and indicating module is used to indicate current duty.

Claims (1)

1. one kind can be detected the photoelectric sensor of transparent substance, it is characterized in that, described photoelectric sensor comprises with voltage transformation and output circuit, microprocessor, the LED indicating circuit of I/O bus connection, circuit is set, receives gain amplifier regulating circuit and transmitting driving circuit
Voltage transformation and output circuit, for 10~30V DC voltage of input being converted to two groups of DC voltage of 6.8V and 5V, are respectively used to power valve, microprocessor and the power supply of reception gain amplifier regulating circuit,
Voltage transformation and output circuit comprise two-way PNP output, transmitting driving circuit is for red-emitting, the light of launching is after the reflector of described photoelectric sensor returns, a part passes to and receives gain amplifier regulating circuit, receive after gain amplifier regulating circuit amplifies signal and carry out signal processing to microprocessor, corresponding mode of operation is definite by circuit is set, and LED indicating circuit is used to indicate current duty.
CN201320889088.8U 2013-12-31 2013-12-31 Photoelectric sensor capable of detecting transparent objects Expired - Fee Related CN203643620U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320889088.8U CN203643620U (en) 2013-12-31 2013-12-31 Photoelectric sensor capable of detecting transparent objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320889088.8U CN203643620U (en) 2013-12-31 2013-12-31 Photoelectric sensor capable of detecting transparent objects

Publications (1)

Publication Number Publication Date
CN203643620U true CN203643620U (en) 2014-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320889088.8U Expired - Fee Related CN203643620U (en) 2013-12-31 2013-12-31 Photoelectric sensor capable of detecting transparent objects

Country Status (1)

Country Link
CN (1) CN203643620U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111044089A (en) * 2020-01-03 2020-04-21 上海兰宝传感科技股份有限公司 Photoelectric sensor capable of automatically adjusting gain
CN117192637A (en) * 2023-08-04 2023-12-08 深圳市志奋领科技有限公司 Retro-reflection type photoelectric sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111044089A (en) * 2020-01-03 2020-04-21 上海兰宝传感科技股份有限公司 Photoelectric sensor capable of automatically adjusting gain
CN117192637A (en) * 2023-08-04 2023-12-08 深圳市志奋领科技有限公司 Retro-reflection type photoelectric sensor

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140611

Termination date: 20201231

CF01 Termination of patent right due to non-payment of annual fee