CN102707330B - Monitoring method for ticket checking passage - Google Patents

Monitoring method for ticket checking passage Download PDF

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Publication number
CN102707330B
CN102707330B CN201210190812.8A CN201210190812A CN102707330B CN 102707330 B CN102707330 B CN 102707330B CN 201210190812 A CN201210190812 A CN 201210190812A CN 102707330 B CN102707330 B CN 102707330B
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light curtain
receiver
monitoring method
emission
code
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CN102707330A (en
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翟宁
王颖蕊
容易
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EASYWAY (SUZHOU) ELECTRONIC TECHNOLOGY Co Ltd
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EASYWAY (SUZHOU) ELECTRONIC TECHNOLOGY Co Ltd
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Abstract

The invention discloses a monitoring method for a ticket checking passage. The monitoring method comprises the following steps of: generating a synchronous continuous square signal and an emission enabling signal which is used for turning on emitters in an emission optical screen strip by a clock generator in an optical screen controller, wherein the synchronous continuous square signal sequentially comprises a front guide code and a detection pulse which is used for controlling a sampling point of the optical screen controller, and at a falling edge of the front guide code, the emission enabling signal is triggered and sustained for the width of one pulse; when the emission enabling signal is positioned at a valid bit, and a detection pulse code is positioned at a rising edge, turning on the emitters positioned at an emission end to allow the emitters to be in an emission state and receivers positioned at a receiving end to allow the receivers to be in a shielding state for one clock period; and when the detection pulse code is positioned at the falling edge, acquiring the working state of each emitter and each receiver by the optical screen controller so as to acquire the shielding position of an object to be monitored at that moment. The monitoring method is high in identification accuracy, and when the separation distance between an infrared emission unit and a receiving unit is small, the problems of crosstalk between light beams and the problem of real-time are solved.

Description

Monitoring method for ticket-checking pass way
Technical field
The present invention relates to railway ticket checking field, be specifically related to a kind of monitoring method for ticket-checking pass way.
Background technology
Light curtain is detected generally containing dozens of and even up to a hundred infrared emission, acceptance point in common region, in order to ensure the real-time of detection, whole region is detected light curtain system and is generally had that multi beam is infrared to be launched simultaneously, receive, will relate to the cross-interference issue between light beam like this, take over party cannot confirm this light beam is from which launching site; Secondly, prior art real-time is poor, therefore, how to design a kind of monitoring method that can avoid infrared emission, receiving element spacing to crosstalk between hour light beam, becomes the direction that those of ordinary skills make great efforts.
Summary of the invention
The invention provides a kind of monitoring method for ticket-checking pass way, this monitoring method accuracy of identification is high, and can guarantee hour avoid between light beam cross-interference issue and improve real-time in infrared emission, receiving element spacing, thereby improve the precision and the work efficiency that detect.
For achieving the above object, the technical solution used in the present invention is:
A kind of monitoring method for ticket-checking pass way, described ticket-checking pass way, mainly by left gate body, right gate body, light curtain controller, be installed on the utilizing emitted light curtain bar being comprised of several transmitters on left gate body and right gate body and the reception light curtain bar that is comprised of several receivers forms respectively, is characterized in that: described monitoring method comprises the following steps:
Step 1, clock generator in light curtain controller produces one and comprises the synchronous square-wave signal continuously of several light curtain sense cycle and open receiver in reception light curtain bar for opening transmitting enable signal and the control of described utilizing emitted light curtain bar transmitter transmitting, this synchronous square-wave signal is continuously for utilizing emitted light curtain bar and the reception light curtain bar of synchronous described pairing, according to residing different phase, its effect is for opening the lead code of transmitting enable signal to described light curtain sense cycle successively, for controlling the detection pulse code of described light curtain controller sampled point and for emptying the stop code of emission state, in this detection pulse code, detect pulse number and equal described number of transmitters, this transmitting enable signal contains the significance bit of a clock period a light curtain sense cycle,
Step 2, when lead code is in negative edge in described synchronous square-wave signal continuously, triggers described transmitting enable signal and continue a width that detects pulse;
Step 3, when described transmitting enable signal detects pulse code in rising edge during in significance bit and in synchronous square-wave signal continuously, open the transmitter that is positioned at transmitting terminal and in accepting state, continue a clock period in emission state and the receiver that is positioned at starting end;
Step 4, while detecting the next rising edge of pulse code in described step 3 rising edge in described synchronous square-wave signal continuously, open next transmitter and in accepting state, continue a clock period in emission state and next receiver;
Step 5, while detecting pulse code in negative edge in described synchronous square-wave signal continuously, described light curtain controller gathers the output signal of described reception light curtain bar and preserves successively this signal, thereby by each duty sequence information obtaining, thereby according to the position of the detection pulse code that in this duty sequence information, the receiver in occlusion state is corresponding, obtain the position of blocking of object to be monitored this moment.
In technique scheme, further improved technical scheme is as follows:
1,, in such scheme, the cycle of described synchronous square-wave signal is that 1MS can arrange to 40US.
2, in such scheme, the significance bit of described transmitting enable signal is high level, and the emission state of described transmitter is high level; The output low level of described receiver represents now for blocking, otherwise receiver is unobstructed.
3,, in such scheme, described left gate body and right gate body separately middle inside are all provided with beating door.
4,, in such scheme, in described light curtain sense cycle, the occlusion state of receiver is that the quantity of blocking can be judged the quantity of the receiver being blocked, thereby determines the thickness of object; The position of object can be judged in position according to the receiver being blocked in the duty sequence information of preserving in described light curtain sense cycle in sequence; According to the variation of shelter position between adjacent described light curtain sense cycle, can calculate the speed that object moves.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect:
The present invention is for the monitoring method of ticket-checking pass way, and this monitoring method accuracy of identification is high, and can guarantee hour to avoid cross-interference issue and real time problems between light beam in infrared emission, receiving element spacing, thereby has improved the precision and the work efficiency that detect.
Accompanying drawing explanation
Accompanying drawing 1 is transmitter of the present invention and receiver architecture schematic diagram;
Accompanying drawing 2 is the sequential chart of the present invention for the monitoring method of ticket-checking pass way.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment: a kind of monitoring method for ticket-checking pass way, described ticket-checking pass way is mainly by left gate body, right gate body, light curtain controller, be installed on the utilizing emitted light curtain bar being comprised of several transmitters on left gate body and right gate body and the reception light curtain bar that is comprised of several receivers forms respectively, and described monitoring method comprises the following steps:
Step 1, clock generator in light curtain controller produces one and comprises the synchronous square-wave signal continuously of several light curtain sense cycle and receive for opening the transmitting enable signal of described utilizing emitted light curtain bar transmitter transmitting and controlling the control signal that in light curtain bar, receiver receives, this synchronous square-wave signal is continuously for utilizing emitted light curtain bar and the reception light curtain bar of synchronous described pairing, according to residing different phase, its effect is for opening the lead code of transmitting enable signal to described light curtain sense cycle successively, for controlling the detection pulse code of described light curtain controller sampled point and for emptying the stop code of emission state, in this detection pulse code, detect pulse number and equal described number of transmitters, this transmitting enable signal contains the significance bit of a clock period a light curtain sense cycle,
Step 2, when lead code is in negative edge in described synchronous square-wave signal continuously, triggers described transmitting enable signal and continue a width that detects pulse;
Step 3, when described transmitting enable signal detects pulse code in rising edge during in significance bit and in synchronous square-wave signal continuously, open the transmitter that is positioned at transmitting terminal and in accepting state, continue a clock period in emission state and the receiver that is positioned at starting end; Be that the zero hour is switched in first transmitting that detects corresponding first transmitter of rising edge of pulse, if enable signal is now high level, open the width of launching and continuing a pulse, otherwise close the transmitting of first transmitter; Second rising edge that detects pulse is the transmitting switching zero hour of second transmitter, by that analogy;
Step 4, while detecting the next rising edge of pulse code in described step 3 rising edge in described synchronous square-wave signal continuously, open next transmitter and in accepting state, continue a clock period in emission state and next receiver;
Step 5, while detecting pulse code in negative edge in described synchronous square-wave signal continuously, described light curtain controller gathers the output signal of described reception light curtain bar and preserves successively this signal, thereby by each duty sequence information obtaining, thereby according to the position of the detection pulse code that in this duty sequence information, the receiver in occlusion state is corresponding, obtain the position of blocking of object to be monitored this moment.
The cycle of above-mentioned synchronous square-wave signal is that 1MS can arrange to 40US.
The significance bit of above-mentioned transmitting enable signal is high level, and the emission state of described transmitter is high level; The output low level of described receiver represents now for blocking, otherwise receiver is unobstructed.
Above-mentioned left gate body and right gate body separately middle inside are all provided with beating door.
In above-mentioned light curtain sense cycle, the occlusion state of receiver is that the quantity of blocking can be judged the quantity of the receiver being blocked, thereby determines the thickness of object; According to can judge the position of object in the duty sequence information of preserving in described light curtain sense cycle for the receiver that the blocks position in sequence; According to the variation of shelter position between adjacent described light curtain sense cycle, can calculate the speed that object moves.
The present embodiment foregoing is specifically described below.
A kind of clock synchronous light curtain that utilizes sends and the reception of light curtain, and then the method for definite shelter position.Utilize clock synchronous transmitter, receiver, the transmitting that transmitter is opened particular transmission unit in the specific period under the effect of clock and emissioning controling signal, receiving end utilizes the reception sampling of the edging trigger master controller of clock under the effect of synchronous clock, thereby realize master controller in the specific period, open the reception condition of launch and detecting corresponding receiving end, realize in detection and obtain the positional information being blocked.
The difference that generally can require according to accuracy of identification at the surveyed area of gate lays infrared reception and the launching site of dozens of to tens along passage, for detection of existence, position and the size of object in passage.The effect of light curtain controller is wanted to control infrared emission exactly, avoids interference to each other, determines the position at the object place being blocked simultaneously at receiving end by the light that is blocked.For the real-time guarantee detecting, need to be in the situation that not occurring to disturb transmitting, receive and be divided into several regions, the region that controller can phase mutual interference to these is synchronously detected.
Whole passage is divided into 4 sections, every section is comprised of a transmitter unit and a receiving element, each transmitter unit consists of tens transmitters, and each receiving element is comprised of tens receivers, and the interior quantity of transmitter and the quantity of receiver is consistent on the same group.Transmitter unit in same section and receiving element are over against putting.The composition of every section is shown in Fig. 1.
Whole scheme is comprised of light curtain controller, 4 transmitter units, 4 receiving elements.
The clock generator effect of light curtain controller: the generation cycle, is comprised of lead code, detection pulse, stop code three parts to the adjustable continuous square-wave signal of 40US at 1MS.Lead code starts transmitting enable signal for each transmitter of removing in transmitter unit simultaneously, detect pulse and control the emission duration length of each transmitter unit and the order of transmitting, the quantity of detection pulse is consistent with the quantity of the transmitter in transmitter unit, and stop code is twice interval between complete sense cycle.Each length all can arrange.
The effect of transmitting enabling pulse: for enabling corresponding transmitter, make transmitter in emission state.
Receive the effect detecting: according to the position of blocking the detection pulse that signal is corresponding of detected receiving end, determine the position being blocked.
Transmitter unit: formed by a plurality of transmitters (the concrete quantity of transmitter is relevant with physical length and accuracy of detection), a plurality of shift registers etc.Under the effect of clock and transmitting enabling pulse, open successively, close transmitting.
Receiving element: formed by a plurality of receivers (the concrete quantity of receiver is relevant with physical length and accuracy of detection), a plurality of shift register and signal output channels etc.The current reception condition of instant output under the effect of clock.
Sequential relationship: the sequential relationship that transmitter, receiver, light curtain controller adopt is shown in Fig. 2.
What circuit design became to have receiver output corresponding while blocking is the unobstructed output high level of low level, and the sampled point of light curtain controller just in time drops on the centre position that receives output, thereby has guaranteed reliable reception.Each transmitter is that timesharing is launched so has avoided the interference between transmitter.
Post-processed: light curtain controller can know that according to the signal sampling and corresponding pulse position that transmitter is blocked, thereby judge the position of blocking, in conjunction with the time parameter of light curtain controller, can further calculate speed that in passage, object moves, detect abnormal situation about stopping for a long time in passage.
While adopting the above-mentioned monitoring method for ticket-checking pass way, this monitoring method accuracy of identification is high, and can guarantee hour to avoid cross-interference issue and real time problems between light beam in infrared emission, receiving element spacing, thereby has improved the precision and the work efficiency that detect.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.

Claims (1)

1. the monitoring method for ticket-checking pass way, described ticket-checking pass way, mainly by left gate body, right gate body, light curtain controller, be installed on the utilizing emitted light curtain bar being comprised of several transmitters on left gate body and right gate body and the reception light curtain bar that is comprised of several receivers forms respectively, is characterized in that: described monitoring method comprises the following steps:
Step 1, clock generator in light curtain controller produces one and comprises the synchronous square-wave signal continuously of several light curtain sense cycle and for opening the transmitting enable signal of described utilizing emitted light curtain bar transmitter transmitting and opening the reception control signal that receives receiver in light curtain bar, this synchronous square-wave signal is continuously for synchronous described utilizing emitted light curtain bar and receive light curtain bar, according to residing different phase, its effect is for opening the lead code of transmitting enable signal to described light curtain sense cycle successively, for controlling the detection pulse code of described light curtain controller sampled point and for emptying the stop code of emission state, in this detection pulse code, detect pulse number and equal described number of transmitters, this transmitting enable signal contains the significance bit of a clock period a light curtain sense cycle,
Step 2, when lead code is in negative edge in described synchronous square-wave signal continuously, triggers described transmitting enable signal and continue a width that detects pulse;
Step 3, when described transmitting enable signal detects pulse code in rising edge during in significance bit and in synchronous square-wave signal continuously, open a transmitter being positioned at transmitting terminal and in accepting state, continue a clock period in emission state and a receiver being positioned at receiving end;
Step 4, while detecting the next rising edge of pulse code in described step 3 rising edge in described synchronous square-wave signal continuously, open next transmitter and in accepting state, continue a clock period in emission state and next receiver;
Step 5, while detecting pulse code in negative edge in described synchronous square-wave signal continuously, described light curtain controller gathers the output signal of described reception light curtain bar and preserves successively this signal, thereby by each duty sequence information obtaining, thereby according to the position of the detection pulse code that in this duty sequence information, the receiver in occlusion state is corresponding, obtain the position of blocking of object to be monitored this moment.
2. monitoring method according to claim 1, is characterized in that: the described synchronous cycle of square-wave signal is continuously that 1MS can arrange to 40US.
3. monitoring method according to claim 1, is characterized in that: the significance bit of described transmitting enable signal is high level, and the emission state of described transmitter is high level; The output low level of described receiver represents now for blocking, otherwise receiver is unobstructed.
4. monitoring method according to claim 1, is characterized in that: described left gate body and right gate body separately middle inside are all provided with beating door.
5. monitoring method according to claim 1, is characterized in that: in described light curtain sense cycle, the occlusion state of receiver is that the quantity of blocking can be judged the quantity of the receiver being blocked, thereby determines the thickness of object; According to can judge the position of object in the duty sequence information of preserving in described light curtain sense cycle for the receiver that the blocks position in sequence; According to the variation of shelter position between adjacent described light curtain sense cycle, can calculate the speed that object moves.
CN201210190812.8A 2012-06-11 2012-06-11 Monitoring method for ticket checking passage Active CN102707330B (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102681025B (en) * 2012-06-11 2014-03-26 易程(苏州)电子科技股份有限公司 Monitoring system for railway passenger ticket checking channel
EP2813868B1 (en) * 2013-06-11 2021-08-04 Rockwell Automation Switzerland GmbH Method for synchronizing optical units of a photoelectric barrier and light curtain
CN103984041A (en) * 2014-06-05 2014-08-13 易程(苏州)电子科技股份有限公司 Monitoring equipment and method for ticket gate
CN109174561A (en) * 2018-10-25 2019-01-11 威准(厦门)自动化科技有限公司 A kind of the base position automatic aligning method and device of the point plastic pin of dispenser
CN111354111B (en) * 2018-12-20 2021-05-14 天地融科技股份有限公司 Infrared access control judgment method and infrared access control equipment
CN112564812B (en) * 2020-11-25 2022-07-22 上海长江电气设备集团有限公司 Pulse signal modulation and demodulation method, light curtain receiver, transmitter and storage medium
CN115947193B (en) * 2022-11-21 2023-09-01 伟龙意程智能科技(江苏)有限公司 Elevator flat layer photoelectric sensor

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