CN203643620U - Photoelectric sensor capable of detecting transparent objects - Google Patents
Photoelectric sensor capable of detecting transparent objects Download PDFInfo
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- 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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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
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.
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 |
Family
ID=50874855
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) |
-
2013
- 2013-12-31 CN CN201320889088.8U patent/CN203643620U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |