CN2066361U - Photoelectric protector - Google Patents
Photoelectric protector Download PDFInfo
- Publication number
- CN2066361U CN2066361U CN 90213948 CN90213948U CN2066361U CN 2066361 U CN2066361 U CN 2066361U CN 90213948 CN90213948 CN 90213948 CN 90213948 U CN90213948 U CN 90213948U CN 2066361 U CN2066361 U CN 2066361U
- Authority
- CN
- China
- Prior art keywords
- photoelectric
- photoelectric sensor
- sensor
- board unit
- protector
- Prior art date
- 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.)
- Withdrawn
Links
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model provides a photoelectric protecting device which is used for the metal forming machinery, comprising a control box 20, a photoelectric sensor 30 and a reflecting mirror 40. The utility model is characterized in that the processing of various signals is realized in the photoelectric sensor 30, and the integrated signal after processing is input to the control box 20. Consequently, excessive transmission lines between the photoelectric sensor and the control box are avoided. Additionally, a negative feedback circuit is preferentially adopted in a light receiving device to eliminate the interference of the external light. Thus, the reliability of the photoelectric protecting device is raised.
Description
Utility model relates to a kind of photoelectric protector that is used for the supporting protection operator personal safety of metal forming machinery.
This photoelectric protector generally comprises a control cabinet; one has and luminously is connected with control cabinet with the photoelectric sensor of sensitive device; also have one to return and penetrate mirror in addition; return by speculum behind the luminescent device emission optical signal in the photoelectric sensor; receive the protection light curtain that constitutes a branch of one-tenth rectangle by the sensitive device in the photoelectric sensor again; when the person (as people's hand) when entering the hazardous area; the light curtain is blocked; photoelectric sensor is passed to control cabinet with signal; control cabinet links to each other with the control circuit of metal forming machinery; the control press stops at once, reaches the purpose of personal safety protection.
Existing this photoelectric protector; have only luminous and sensitive device in its photoelectric sensor; remaining oscillator; pulsqe distributor; detect synchronously and wait all signal processing and control section all to be located in the control cabinet; the transmission of signal between sensor and the control cabinet just needs a lot like this; required transmission line just needs a lot; ten transmission lines of just need as four road light beams; 18 lines of just need of eight road light curtains; and when changing the protection height of photoelectric sensor, (that is change luminous in the sensor; how many times of sensitive device); then the transmission line between control cabinet and the sensor will change; claimed height is big more; it is just many more then to send out sensitive device, and transmission line is just many more.This too much sensor and the transmission line between the control cabinet bring many problems, and as poor anti jamming capability, fault rate increases etc.
For this reason, utility model provides a kind of antijamming capability strong, the photoelectric protector that reliability is high.
Utility model is that existing photoelectric protector is improved, make not only have in the photoelectric sensor send out, sensitive device, also have preamplification board unit and control circuit board unit.In sensor, finish various Signal Processing work like this, only the comprehensive signal after handling is passed to control cabinet by single transmission line, therefore, increased the antijamming capability and the reliability of photoelectric protector.
Fig. 1, the photoelectric protector outline drawing.
Fig. 2, the structural representation of photoelectric sensor in the photoelectric protector.
Fig. 3, the A-A cross sectional view of Fig. 2.
Fig. 4, the negative-feedback circuit figure of sensitive device in the photoelectric sensor.
Details and embodiment preferred below in conjunction with the description of drawings utility model.
Photoelectric protector shown in Figure 1 comprises a control cabinet 20, photoelectric sensor 30 and a speculum 40.Control cabinet 20 meets AC power a, connects by output contact b and press main control loop simultaneously; Photoelectric sensor 30 meets dc source c; the luminous back of luminescent device in the sensor is returned by speculum 40; receive by the sensitive device in the sensor again; between sensor 30 and speculum 40, promptly form protection light curtain F; owing to also installed preamplification board unit and control circuit board unit in the sensor 30, in sensor 30, finish various Signal Processing like this, only the comprehensive signal after handling is defeated by control cabinet by solid wire transmission signal d; safe and reliable, improved antijamming capability.
Fig. 2 and Fig. 3 are the structural representations of the photoelectric sensor 30 taken apart, and this photoelectric sensor constitutes a photoelectric transducer element by following mode:
A, a plastic skeleton 2.
Plastics biconvex lens 5 is equipped with in the front of b, plastic skeleton 2.
C, in dress circuit preamplification board unit, the back of plastic skeleton 24.
D, in dress control circuit board unit, the side of plastic skeleton 23.
The sensor unit is a unit with four the tunnel generally, and one or several unit combination is contained in the sensor housing 1 together can constitute highly different sensors, adapts to the requirement of different protection height, is easy to realize the seriation of product.
Existing photoelectric protector, the sensitive device in its photoelectric sensor very easily is subjected to the interference of light not in the know, promptly the interference of external light can not be differentiated and eliminate, thereby easily make protective device produce misoperation, and the reliability of this device is obviously reduced.For this reason, establish the interference that negative-feedback circuit is eliminated ambient light on the sensitive device of the utility model in photoelectric sensor.Fig. 4 is exactly the schematic diagram of this negative-feedback circuit.It is the phototriode BT that has adopted three pin
1As photo detector, BT
1The infrared light of the light-emitting component A emission that receives is the required useful signal of device, but ambient light is equally by BT
1Receive, if do not got measure, will make photoelectric protector lose efficacy and cisco unity malfunction, but utility model has added R
1, BT
2, R
2Deng negative feedback links, thereby make ambient light inoperative, the course of work is as follows:
Stray light → BT
1Reception → BT
2Saturation conduction → e
1Level ↑ →
b
2Level ↑ → BT
2Level ↓ → b
1Level ↓ → BT
1Unsaturated leading
Logical → BT
1E
1Level ↓
At this moment BT
1Remain on no ambient light state, thereby realized the effect that anti-ambient light is disturbed.
The key of utility model is to realize various Signal Processing in photoelectric sensor; integrated signal after only will handling inputs to control cabinet; thereby avoided transmission line too much between photoelectric sensor and the control cabinet; to eliminate the interference of ambient light, therefore improved the reliability of this photoelectric protector greatly.This device can be widely used in forcing press or the safeguard protection of the enterprising pedestrian's body of similar devices.
Claims (3)
1, a kind of photoelectric protector; comprise a control cabinet (20), photoelectric sensor (30) and a speculum (40); photoelectric sensor (30) is connected with control cabinet (20) electric wire; have in the photoelectric sensor (30) behind the luminescent device emission optical signal by speculum (40) backspace; receive by the sensitive device in the photoelectric sensor (30) again and constitute protection light curtain; it is characterized in that: not only have in the said photoelectric sensor (30) send out, sensitive device, also have preamplification board unit (4) and control circuit board unit (3).
2, by the described photoelectric protector of claim 1, it is characterized in that: said photoelectric sensor (30) constitutes a photoelectric transducer element by following mode:
A, a plastic skeleton (2),
Plastics biconvex lens (5) is equipped with in the front of b, plastic skeleton (2),
The dress circuit preamplification board unit (4), back of c, plastic skeleton (2),
The dress control circuit board unit (3), side of d, plastic skeleton (2).
3, by the described photoelectric protector of claim 1, it is characterized in that: the sensitive device in the said photoelectric sensor (30) has negative-feedback circuit to eliminate the interference of ambient light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90213948 CN2066361U (en) | 1990-06-13 | 1990-06-13 | Photoelectric protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90213948 CN2066361U (en) | 1990-06-13 | 1990-06-13 | Photoelectric protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2066361U true CN2066361U (en) | 1990-11-28 |
Family
ID=4893378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90213948 Withdrawn CN2066361U (en) | 1990-06-13 | 1990-06-13 | Photoelectric protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2066361U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106463026A (en) * | 2014-06-30 | 2017-02-22 | 菲尼克斯电气公司 | Collective remote signaling apparatus |
-
1990
- 1990-06-13 CN CN 90213948 patent/CN2066361U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106463026A (en) * | 2014-06-30 | 2017-02-22 | 菲尼克斯电气公司 | Collective remote signaling apparatus |
| CN106463026B (en) * | 2014-06-30 | 2020-01-07 | 菲尼克斯电气公司 | Integrated remote signal device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU4138889A (en) | Intrusion detection system and a method therefor | |
| EP1164556A3 (en) | Opto-electronic intruder alarm apparatus | |
| EP0289621A4 (en) | Passive infrared burglar sensor equipped with visual field interruption monitor mechanism. | |
| FR2686465B1 (en) | COMBINED REMOTE ON / OFF CONTROL AND DIFFERENTIAL PROTECTION DEVICE. | |
| EP0437757A3 (en) | Device for monitoring the passage of individuals in a corridor | |
| CN2066361U (en) | Photoelectric protector | |
| CS655086A1 (en) | Device for agrcultural harvester for foreign matters detection | |
| EP0387837A3 (en) | Externally discernible power supply abnormality detection system | |
| ES2107373A1 (en) | Sorting machine using sandwich detectors | |
| CA2259733A1 (en) | Detector for objects falling into water | |
| ITMI920709A1 (en) | ANTI-SIMULATION TURN | |
| FR2708761A1 (en) | System for entering multi-dimensional position data for computer | |
| EP0375270A3 (en) | Radiation detection arrangements and methods | |
| EP0426677B1 (en) | Detection circuitry | |
| EP0759660B1 (en) | Data input device for a measuring transformer | |
| CA2232575A1 (en) | Electronic article surveillance system with comb filtering and false alarm supression | |
| FR2395554A1 (en) | Movement detection and alarm system - uses IR and ultrasonic detectors in combination with correlator | |
| GB1173186A (en) | Proximity Switch | |
| FR2700431B1 (en) | TWO-WIRE INPUT / OUTPUT DEVICE WITH ANOMALY DETECTION. | |
| CN203718364U (en) | Safety detection device for stack discharge of stacker crane | |
| CN2171432Y (en) | Photoelectric sensor for safety press | |
| CN212802940U (en) | General control input filter circuit of fire control electric window opener control equipment | |
| CN2676312Y (en) | Enclosed type radio frequency monitor for wall guarding | |
| Bibby | Modern Metalforming Manufacturing Simplicity With Leading Edge Technology Focus: the Press Room | |
| JP2533332Y2 (en) | Passive infrared detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: NAME OF UTILITY MODEL; FROM: PHOTOELECTRIC PROTECTOR TO: PHOTOELECTRIC PROTECTING DEVICE |
|
| CU01 | Correction of utility model patent |
Correction item: Denomination of Utility Model Correct: Photoelectric protection device False: Photoelectric protector Page: The title page |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Denomination of Utility Model Correct: Photoelectric protection device False: Photoelectric protector Number: 48 Page: 47 Volume: 6 Correction item: Denomination of Utility Model Correct: Photoelectric protection device False: Photoelectric protector Number: 48 Page: 201 Volume: 6 Correction item: Denomination of Utility Model Correct: Photoelectric protection device False: Photoelectric protector Number: 48 Page: 183 Volume: 6 Correction item: Denomination of Utility Model Correct: Photoelectric protection device False: Photoelectric protector Number: 48 Page: 204 Volume: 6 |
|
| ERR | Gazette correction |
Free format text: CORRECT: NAME OF UTILITY MODEL; FROM: PHOTOELECTRIC PROTECTOR TO: PHOTOELECTRIC PROTECTING DEVICE |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |