CN102707330A - Monitoring method for ticket checking passage - Google Patents
Monitoring method for ticket checking passage Download PDFInfo
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- CN102707330A CN102707330A CN2012101908128A CN201210190812A CN102707330A CN 102707330 A CN102707330 A CN 102707330A CN 2012101908128 A CN2012101908128 A CN 2012101908128A CN 201210190812 A CN201210190812 A CN 201210190812A CN 102707330 A CN102707330 A CN 102707330A
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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
Technical field
The present invention relates to railway ticket checking field, be specifically related to a kind of monitoring method that is used for the ticket checking passage.
Background technology
Common zone is detected the light curtain and is generally contained dozens of and even up to a hundred infrared emission, acceptance point; In order to ensure the real-time of detection; Whole zone is detected light curtain system and is had generally that multi beam is infrared to be launched simultaneously, receive; Will relate to the cross-interference issue between light beam like this, promptly the take over party can't confirm this light beam is from which launching site; Secondly, the prior art real-time is relatively poor, therefore, how to design a kind of monitoring method that can avoid infrared emission, crosstalk between the light beam when receiving element spacing is less, becomes the direction that those of ordinary skills make great efforts.
Summary of the invention
The present invention provides a kind of monitoring method that is used for the ticket checking passage; This monitoring method accuracy of identification is high; And can guarantee hour to avoid between the light beam cross-interference issue and improve real-time, thereby improve the precision and the work efficiency that detect in infrared emission, receiving element spacing.
For achieving the above object, the technical scheme that the present invention adopts is:
A kind of monitoring method that is used for the ticket checking passage; Said ticket checking passage is mainly by left gate body, right gate body, light curtain controller, be installed on the emission light curtain bar of being made up of several transmitters on left gate body and the right gate body and be made up of the reception light curtain bar that several receivers are formed respectively, and it is characterized in that: said monitoring method may further comprise the steps:
Step 2, when lead code is in negative edge in the said square-wave signal synchronously continuously, trigger said emission enable signal and continue a width that detects pulse;
Step 3, when when said emission enable signal is in significance bit and synchronously continuously detecting pulse code in the square-wave signal and be in rising edge, open the transmitter that is positioned at transmitting terminal and be in emission state and be in accepting state with the receiver that is positioned at starting end and continue a clock period;
Step 4, when detecting pulse code in the said square-wave signal synchronously continuously and be in the next rising edge of said step 3 rising edge, open next transmitter and be in emission state and next receiver and be in accepting state and continue a clock period;
Step 5, when detecting pulse code in the said square-wave signal synchronously continuously and be in negative edge; Said light curtain controller is gathered the output signal of said reception light curtain bar and is preserved this signal successively; Thereby each duty sequence information that will obtain, thereby obtain the position of blocking of object to be monitored this moment according to the position of the corresponding detection pulse code of the receiver that is in occlusion state in this duty sequence information.
Further improved technical scheme is following in the technique scheme:
1, in the such scheme, the cycle of said synchronous square-wave signal is that 1MS can be provided with to 40US.
2, in the such scheme, the significance bit of said emission enable signal is a high level, and the emission state of said transmitter is a high level; The output low level of said receiver is represented for blocking, not block otherwise receiver is a nothing this moment.
3, in the such scheme, said left gate body and right gate body middle inside separately all are equipped with the beating door.
4, in the such scheme, the occlusion state of receiver is that the quantity of blocking can be judged the quantity of the receiver that is blocked in the said light curtain sense cycle, thereby confirms the thickness of object; Can judge the position of object according to the position of receiver in sequence that is blocked in the duty sequence information of preserving in the said light curtain sense cycle; Can calculate the speed of movement of objects according to the variation of shelter position between the adjacent said light curtain sense cycle.
Because the technique scheme utilization, the present invention compared with prior art has advantage and effect:
The present invention is used for the monitoring method of ticket checking passage, and this monitoring method accuracy of identification is high, and can guarantee hour to avoid cross-interference issue and real-time problem between the light beam in infrared emission, receiving element spacing, thereby has improved the precision and the work efficiency that detect.
Description of drawings
Accompanying drawing 2 is used for the sequential chart of the monitoring method of ticket checking passage for the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Embodiment: a kind of monitoring method that is used for the ticket checking passage; Said ticket checking passage is mainly by left gate body, right gate body, light curtain controller, be installed on the emission light curtain bar of being made up of several transmitters on left gate body and the right gate body and be made up of the reception light curtain bar that several receivers are formed respectively, and said monitoring method may further comprise the steps:
Step 2, when lead code is in negative edge in the said square-wave signal synchronously continuously, trigger said emission enable signal and continue a width that detects pulse;
Step 3, when when said emission enable signal is in significance bit and synchronously continuously detecting pulse code in the square-wave signal and be in rising edge, open the transmitter that is positioned at transmitting terminal and be in emission state and be in accepting state with the receiver that is positioned at starting end and continue a clock period; Be that zero hour is switched in first emission that detects corresponding first transmitter of rising edge of pulse, if the enable signal of this moment be high level then open emission and continue the width of a pulse, otherwise close the emission of first transmitter; Second rising edge that detects pulse is the emission switching zero hour of second transmitter, by that analogy;
Step 4, when detecting pulse code in the said square-wave signal synchronously continuously and be in the next rising edge of said step 3 rising edge, open next transmitter and be in emission state and next receiver and be in accepting state and continue a clock period;
Step 5, when detecting pulse code in the said square-wave signal synchronously continuously and be in negative edge; Said light curtain controller is gathered the output signal of said reception light curtain bar and is preserved this signal successively; Thereby each duty sequence information that will obtain, thereby obtain the position of blocking of object to be monitored this moment according to the position of the corresponding detection pulse code of the receiver that is in occlusion state in this duty sequence information.
The cycle of above-mentioned synchronous square-wave signal is that 1MS can be provided with to 40US.
The significance bit of above-mentioned emission enable signal is a high level, and the emission state of said transmitter is a high level; The output low level of said receiver is represented for blocking, not block otherwise receiver is a nothing this moment.
Above-mentioned left gate body and right gate body middle inside separately all are equipped with the beating door.
The occlusion state of receiver is that the quantity of blocking can be judged the quantity of the receiver that is blocked in the above-mentioned light curtain sense cycle, thereby confirms the thickness of object; According to the position that can judge object in the duty sequence information of preserving in the said light curtain sense cycle for the position of receiver in sequence of blocking; Can calculate the speed of movement of objects according to the variation of shelter position between the adjacent said light curtain sense cycle.
The present embodiment foregoing specifically is described below.
A kind of clock synchronization light curtain that utilizes sends and the reception of light curtain, and then the method for definite shelter position.Utilize clock synchronization transmitter, receiver; Transmitter is opened the emission of particular transmission unit in the specific period under the effect of clock and emissioning controling signal; Receiving end utilizes the edge of clock to trigger the reception sampling of master controller under the effect of synchronous clock; Thereby realize master controller the period specific open emission and detect the reception condition of corresponding receiving end, obtain the positional information that is blocked when being implemented in detection.
Generally the difference that can require based on accuracy of identification at the surveyed area of gate lays the infrared reception and the launch point of dozens of to tens along passage, is used for existence, position and the size of object in the sense channel.The effect of light curtain controller is wanted to control infrared emission exactly, avoids interference to each other, simultaneously in the position at the object place that receiving end is confirmed through the light that is blocked to be blocked.The real-time that detects for guaranteeing need be divided into several zones in following emission of situation about not disturbing, reception, and controller carries out synchronous detection to these several zones that can the phase mutual interference.
Whole passage is divided into 4 sections; Form by a transmitter unit and a receiving element for every section; Each transmitter unit is made up of tens transmitters, and each receiving element is made up of tens receivers, and the quantity of interior transmitter is consistent with the quantity of receiver on the same group.Transmitter unit in same section and receiving element are over against putting.Every section composition is seen Fig. 1.
Whole proposal is made up of light curtain controller, 4 transmitter units, 4 receiving elements.
The clock generator effect of light curtain controller: the generation cycle, is made up of lead code, detection pulse, stop code three parts to the adjustable continuous square-wave signal of 40US at 1MS.Each transmitter that lead code is used to remove in the transmitter unit starts the emission enable signal simultaneously; Detect the emission duration length of each transmitter unit of pulse control and the order of emission; The quantity of the transmitter that the quantity that detects pulse and transmitter unit are interior is consistent, and stop code is twice interval between complete sense cycle.Each length all can be provided with.
The effect of emission enabling pulse: be used to enable corresponding transmitter, make transmitter be in emission state.
Receive the effect that detects:, confirm the position that is blocked according to the position of blocking the corresponding detection pulse of signal of detecting receiving end.
Transmitter unit: form 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 emission enabling pulse, open, close emission successively.
Receiving element: form 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 seen Fig. 2.
What circuit design became to have receiver output corresponding when blocking is that low level does not have the output of blocking high 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 knows promptly that according to signal that samples 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 movement of objects in the passage speed, detect unusual long-term situation about stopping in the passage.
When adopting the above-mentioned monitoring method that is used for the ticket checking passage, this monitoring method accuracy of identification is high, and can guarantee hour to avoid cross-interference issue and real-time problem between the light beam in infrared emission, receiving element spacing, thereby has improved the precision and the work efficiency that detect.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences of doing based on spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (5)
1. monitoring method that is used for the ticket checking passage; Said ticket checking passage is mainly by left gate body, right gate body, light curtain controller, be installed on the emission light curtain bar of being made up of several transmitters on left gate body and the right gate body and be made up of the reception light curtain bar that several receivers are formed respectively, and it is characterized in that: said monitoring method may further comprise the steps:
Step 1; Clock generator in the light curtain controller produces a synchronously continuous square-wave signal that comprises several light curtain sense cycle and opens the emission enable signal of said emission light curtain bar transmitter emission and open the reception control signal that receives receiver in the light curtain bar with being used for; This synchronously continuous square-wave signal is used for the emission light curtain bar and reception light curtain bar of synchronous said pairing; Its effect is the lead code that is used to open the emission enable signal to said light curtain sense cycle successively according to residing different phase; Be used to control the detection pulse code and the stop code that is used to empty emission state of said light curtain controller sampled point; This detects, and the detection pulse number equals said number of transmitters in the pulse code, and this emission enable signal contains the significance bit of a clock cycle a light curtain sense cycle;
Step 2, when lead code is in negative edge in the said square-wave signal synchronously continuously, trigger said emission enable signal and continue a width that detects pulse;
Step 3, when when said emission enable signal is in significance bit and synchronously continuously detecting pulse code in the square-wave signal and be in rising edge, open the transmitter that is positioned at transmitting terminal and be in emission state and be in accepting state with the receiver that is positioned at receiving end and continue a clock period;
Step 4, when detecting pulse code in the said square-wave signal synchronously continuously and be in the next rising edge of said step 3 rising edge, open next transmitter and be in emission state and next receiver and be in accepting state and continue a clock period;
Step 5, when detecting pulse code in the said square-wave signal synchronously continuously and be in negative edge; Said light curtain controller is gathered the output signal of said reception light curtain bar and is preserved this signal successively; Thereby each duty sequence information that will obtain, thereby obtain the position of blocking of object to be monitored this moment according to the position of the corresponding detection pulse code of the receiver that is in occlusion state in this duty sequence information.
2. monitoring method according to claim 1 is characterized in that: the cycle of said synchronous square-wave signal is that 1MS can be provided with to 40US.
3. monitoring method according to claim 1 is characterized in that: the significance bit of said emission enable signal is a high level, and the emission state of said transmitter is a high level; The output low level of said receiver is represented for blocking, not block otherwise receiver is a nothing this moment.
4. monitoring method according to claim 1 is characterized in that: said left gate body and right gate body middle inside separately all are equipped with the beating door.
5. monitoring method according to claim 1 is characterized in that: the occlusion state of receiver is that the quantity of blocking can be judged the quantity of the receiver that is blocked in the said light curtain sense cycle, thereby confirms the thickness of object; According to the position that can judge object in the duty sequence information of preserving in the said light curtain sense cycle for the position of receiver in sequence of blocking; Can calculate the speed of movement of objects according to the variation of shelter position between the adjacent said light curtain sense cycle.
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| CN201210190812.8A CN102707330B (en) | 2012-06-11 | 2012-06-11 | Monitoring method for ticket checking passage |
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| CN201210190812.8A CN102707330B (en) | 2012-06-11 | 2012-06-11 | Monitoring method for ticket checking passage |
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| CN102681025A (en) * | 2012-06-11 | 2012-09-19 | 易程(苏州)电子科技股份有限公司 | Monitoring system for railway passenger ticket checking channel |
| 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 |
| CN104237962A (en) * | 2013-06-11 | 2014-12-24 | 赛德斯安全与自动化公司 | Method for synchronizing optical units of a photoelectric barrier and light curtain |
| 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 |
| CN111354111A (en) * | 2018-12-20 | 2020-06-30 | 天地融科技股份有限公司 | Infrared access control judgment method and infrared access control equipment |
| CN112564812A (en) * | 2020-11-25 | 2021-03-26 | 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 |
| CN115947193A (en) * | 2022-11-21 | 2023-04-11 | 伟龙意程智能科技(江苏)有限公司 | Novel elevator flat bed photoelectric sensor |
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| 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 |
| CN104237962A (en) * | 2013-06-11 | 2014-12-24 | 赛德斯安全与自动化公司 | 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 |
| CN111354111A (en) * | 2018-12-20 | 2020-06-30 | 天地融科技股份有限公司 | Infrared access control judgment method and infrared access control equipment |
| 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 |
| CN112564812A (en) * | 2020-11-25 | 2021-03-26 | 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 |
| CN115947193A (en) * | 2022-11-21 | 2023-04-11 | 伟龙意程智能科技(江苏)有限公司 | Novel elevator flat bed photoelectric sensor |
| 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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