CN108020872B - Gate passing sensor detection device and method - Google Patents
Gate passing sensor detection device and method Download PDFInfo
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- CN108020872B CN108020872B CN201711399773.1A CN201711399773A CN108020872B CN 108020872 B CN108020872 B CN 108020872B CN 201711399773 A CN201711399773 A CN 201711399773A CN 108020872 B CN108020872 B CN 108020872B
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- G—PHYSICS
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V13/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
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Abstract
The invention provides a gate passing sensor detection device and method, and belongs to the technical application fields of rail transit ticket selling and checking equipment, access control, gate, automatic ticket checking equipment and the Internet of things. The method comprises the following steps: (1) A data acquisition module is connected in parallel in a communication link between a sensor receiving end of the gate channel and the GCU, and acquires instructions sent to the gate unit by the GCU and sensor state data sent to the GCU by the sensor; (2) Transmitting the GCU acquired by the data acquisition module to an instruction of the door unit and transmitting sensor state data to a remote monitoring end; (3) The remote monitoring end judges the working state of the GCU according to the received instruction sent by the GCU to the door unit, and analyzes and graphically displays the received sensor state data.
Description
Technical Field
The invention belongs to the technical application fields of rail transit ticket checking equipment, access control, gate, automatic ticket checking equipment and the Internet of things, and particularly relates to a gate passing sensor detection device and a gate passing sensor detection method.
Background
At present, gate machines applied to the fields of rail transit ticket vending equipment, access control, gate machines, automatic ticket checking equipment and the like all have gate machine passing logic control devices for judging passers-by behaviors, the gate machine passing logic control devices comprise a transmitting end and a receiving end combination of opposite-type infrared photoelectric sensors respectively installed in two gate machines and a gate unit control device (GCU), the transmitting end transmits infrared light with invisible wave bands, the infrared light is received by the receiving end, a sensor light path is shortened, after a pedestrian enters a channel, the body, a portable object and carrying baggage of the gate machine pass through the sensor light paths of different combinations in stages, and different zone state parameters are formed according to the sensor light paths. The sensor receiving end transmits the state parameters to a gate unit control device (GCU), and the gate unit control device (GCU) judges the behavior of a passer in a gate channel through analysis of the state parameters, and when illegal behavior occurs, the gate unit needs to be informed whether to execute blocking action or not.
A gate unit control unit (GCU) determines the behavior of a passer in a gate channel by analyzing a state parameter, and when an illegal behavior occurs, it is necessary to inform the gate unit whether to execute a blocking action. However, when a fault occurs in the transmitting end or the receiving end of the sensor assembly, a phenomenon that the sensor light path is not open is also formed, and an error state parameter is generated to influence the judgment of the door unit control device, or when an illegal passing behavior is detected, a rail transit operator cannot confirm whether the fault is caused by the sensor fault or the defect in the passing logic algorithm.
In recent years, with the establishment of industry standards and specifications, ticket selling and checking equipment is provided with corresponding entrance monitoring laboratories in each city, after the industry chains are differentiated, equipment providers do not have to operate in a form of an outer package after the project is completed or after the equipment maintenance is carried out, third-party operation and maintenance manufacturers do not have to be familiar with the detection and maintenance of equipment states, and at present, no corresponding equipment and method for detecting gate passing sensors exist, so that the operation and maintenance manufacturers cannot realize real-time detection of the sensors.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a gate passing sensor detection device and a gate passing sensor detection method, which are used for detecting the working state of a passing logic device in real time based on the technology of the Internet of things and uploading the working state of the passing logic device to an equipment management server or a third party monitoring server, so that the working state of a sensor and a GCU in the passing logic device can be actively judged when illegal passing behaviors occur, thereby locating the cause of the illegal passing behaviors, easily realizing remote cloud technical service in different places, further reducing the maintenance cost of the gate and the gate passing logic device and further improving the reliability.
The invention is realized by the following technical scheme:
a detection method of a gate passing sensor comprises the following steps:
(1) A data acquisition module is connected in parallel in a communication link between a sensor receiving end of the gate channel and the GCU, and acquires instructions sent to the gate unit by the GCU and sensor state data sent to the GCU by the sensor;
(2) Transmitting the GCU acquired by the data acquisition module to an instruction of the door unit and transmitting sensor state data to a remote monitoring end;
(3) The remote monitoring end judges the working state of the GCU according to the received instruction sent by the GCU to the door unit, and analyzes and graphically displays the received sensor state data.
And (3) the data acquisition module in the step (1) acquires the state data of all correlation sensors and diffuse reflection sensors in the gate channel.
The step (2) is realized in such a way that:
the instruction of sending the GCU acquired by the data acquisition module to the gate unit and the sensor state data are sent to the 4G serial port module in the form of messages through the serial port, the 4G serial port module outputs the messages to the Internet, and the remote monitoring end receives the messages from the Internet.
The analysis and graphical display of the received sensor state data in step (3) is implemented as follows:
the remote monitoring end monitors and judges the sensor state data by using the sensor state data analysis program which is the same as that in the GCU, and converts the sensor state into a graphical interface;
the sensor states include: the light path is smooth and is blocked.
The gate passing sensor detection device for realizing the method comprises a data acquisition module, a communication module and a remote monitoring end;
the data acquisition module comprises a GCU signal acquisition circuit and a sensor signal acquisition circuit;
the GCU signal acquisition circuit is connected with the GCU, receives an instruction sent by the GCU to the gate unit and sends the instruction to the communication module;
the sensor signal acquisition circuit is respectively connected with the receiving ends of the sensors in the gate channel, acquires the state data of the sensors and sends the state data to the communication module;
the communication module sends instructions sent by the GCU to the door unit and state data of each sensor to the remote monitoring end through the Internet.
The sensor signal acquisition circuit comprises an optical coupling isolation circuit and an analog-to-digital conversion circuit;
the receiving end of each sensor is connected with the input end of an optical coupling isolation circuit, the output end of the optical coupling isolation circuit is connected with the input end of an analog-to-digital conversion circuit, and the output end of the analog-to-digital conversion circuit is connected with a communication module.
The communication module comprises a 4G serial port module and a 4G transmitting antenna; the 4G serial port module is connected with the GCU signal acquisition module and the sensor signal acquisition module through the adapter plate respectively, and sends the received instructions sent by the GCU to the door unit and the state data of the sensor to the Internet through the 4G transmitting antenna.
The 4G serial port module is connected with the adapter plate through an RS232 interface.
The remote monitoring end receives instructions sent by the GCU to the door unit and state data of the sensor from the Internet through the 4G receiving antenna.
Compared with the prior art, the invention has the beneficial effects that:
1. the current situation that the state of the sensor cannot be visually monitored and checked by the original technical scheme is changed, the efficiency of equipment fault diagnosis and fault positioning is improved, the complexity of maintenance is simplified, and the maintenance cost is saved.
2. The optical-mechanical-electrical integrated gate is changed into the Internet of things gate through the integration of the 4G module, so that remote monitoring is realized, and the application range and the adaptation breadth of the equipment are further improved.
3. Visual traffic data is effectively obtained in real time, and the gate traffic logic is further expanded and optimized through data accumulation and analysis.
Drawings
Traffic logic control device in the prior art of FIG. 1
FIG. 2 is a schematic diagram of a detecting device of a gate passing sensor according to the present invention
FIG. 3 is a schematic diagram of a remote sensor data receiving end
Detailed Description
The invention is described in further detail below with reference to the attached drawing figures:
the detection method of the gate passing sensor comprises the following steps:
1. the parallel data acquisition module is in the original GCU and sensor communication link.
2. And sending the sensor state data acquired by the data acquisition module to the Internet through the 4G serial port module.
3. The remote monitoring end receives sensor state data sent by the 4G module from the Internet.
4. And the remote monitoring end analyzes and graphically displays the received sensor state data by using a C++ graphical interface and an embedded program similar to GCU. Therefore, the real-time state of the sensor and the monitoring result of whether the traffic logic is normal can be clearly and intuitively obtained.
In the invention, a data acquisition module based on serial port communication is added in parallel in a communication link (shown in figure 1) between the receiving end of the original sensor and the GCU, data receiving and transmitting interaction between the GCU and the sensor are all acquired by the module, J7 is an interface on a GCU physical circuit board, a gate channel is added with a data acquisition module, and the module can acquire the states of all correlation and diffuse reflection sensors in the channel, as shown in figure 2.
The data acquisition module comprises a GCU signal acquisition circuit and a sensor signal acquisition circuit; the GCU signal acquisition circuit is connected with the GCU, receives an instruction sent by the GCU to the gate unit and sends the instruction to the communication module; the sensor signal acquisition circuit is respectively connected with the receiving ends of the sensors in the gate channel, acquires the state data of the sensors and sends the state data to the communication module; the communication module sends instructions sent by the GCU to the door unit and state data of each sensor to the remote monitoring end through the Internet.
The sensor signal acquisition circuit comprises an optical coupling isolation circuit and an analog-to-digital conversion circuit; the receiving end of each sensor is connected with the input end of an optical coupling isolation circuit, the output end of the optical coupling isolation circuit is connected with the input end of an analog-to-digital conversion circuit, and the output end of the analog-to-digital conversion circuit is connected with a communication module. The on-off change of the sensor state is converted into high and low levels by an optical coupling isolation circuit. And then the high-low level is converted into 0 and 1 (the device for converting the conventional analog signal into the digital signal is adopted) through the chip processing of the data acquisition module, the states of 0 and 1 are sent to the 4G module through the serial port in the form of messages through the data acquisition module, and the messages are output to the Internet through the 4G module. Meanwhile, the data acquisition module acquires the working state of the GCU, for example, what instructions are sent to the gate unit by the GCU, the instructions are all sent to the remote monitoring end in the form of messages, and the remote monitoring end is equivalent to monitoring instructions sent by the GCU on line. And receiving the message at the remote monitoring end, and converting the message into on-off change of the sensor by reverse engineering. .
The data acquisition module can acquire and store the communication condition between the GCU and the sensor group in real time completely (the communication condition is stored in ROM in a circuit, physical media can be various types such as a CF card, a DOM disc, a FLASH disc and the like), then the data acquisition module is connected with the 4G serial port module (physical connection is adopted, serial port communication is adopted), and the 4G serial port module transmits the acquired data of the passing behavior to the Internet through a 4G transmitting antenna, as shown in fig. 2 and 3.
The data acquisition module acquires the state change condition of the sensor, and the state of the sensor in the prior art is only fed back to the GCU, and is fed back to the GCU and the data acquisition module. The data acquisition module is used for transmitting the acquired data to the remote monitoring end through the 4G, and the remote monitoring end is provided with an embedded program which is the same as GCU and can graphically and informatively express the acquired data, so that the state of the sensor can be checked, and the running condition of the traffic logic can be monitored.
The remote monitoring end is a management server or a third party monitoring server (which can be built on a PC end), the collected data is received through a 4G receiving antenna, the sensor state is monitored and judged through an embedded program with the same logic judgment condition as the GCU after the data is received, the original sensor state data is graphically displayed through software (for example, the sensor state is written in C++, the sensor state is reflected to be a simple graphical interface of a graph), namely, the light path of the sensor is smooth, the light path is blocked and the sensor state is expressed in a graphical mode, and the remote monitoring is realized.
The foregoing technical solution is only one embodiment of the present invention, and various modifications and variations can be easily made by those skilled in the art based on the application methods and principles disclosed in the present invention, not limited to the methods described in the foregoing specific embodiments of the present invention, so that the foregoing description is only preferred and not in a limiting sense.
Claims (9)
1. A detection method of a gate passing sensor is characterized in that: the method comprises the following steps:
(1) A data acquisition module is connected in parallel in a communication link between a sensor receiving end of the gate channel and the GCU, and acquires instructions sent to the gate unit by the GCU and sensor state data sent to the GCU by the sensor;
(2) Transmitting the GCU acquired by the data acquisition module to an instruction of the door unit and transmitting sensor state data to a remote monitoring end;
(3) The remote monitoring end judges the working state of the GCU according to the received instruction sent by the GCU to the door unit, and analyzes and graphically displays the received sensor state data;
the analysis and graphical display of the received sensor state data in step (3) is implemented as follows:
the remote monitoring end monitors and judges the sensor state data by using the same sensor state data analysis program as that in the GCU, and converts the sensor state into a graphical interface.
2. The method for detecting a gate traffic sensor according to claim 1, wherein: and (3) the data acquisition module in the step (1) acquires the state data of all correlation sensors and diffuse reflection sensors in the gate channel.
3. The gate traffic sensor detection method according to claim 2, wherein: the step (2) is realized in such a way that:
the instruction of sending the GCU acquired by the data acquisition module to the gate unit and the sensor state data are sent to the 4G serial port module in the form of messages through the serial port, the 4G serial port module outputs the messages to the Internet, and the remote monitoring end receives the messages from the Internet.
4. The gate traffic sensor detection method according to claim 3, wherein:
the sensor states include: the light path is smooth and is blocked.
5. A gate passing sensor detecting apparatus for implementing the gate passing sensor detecting method according to any one of claims 1 to 4, characterized in that: the gate passing sensor detection device comprises a data acquisition module, a communication module and a remote monitoring end;
the data acquisition module comprises a GCU signal acquisition circuit and a sensor signal acquisition circuit;
the GCU signal acquisition circuit is connected with the GCU, receives an instruction sent by the GCU to the gate unit and sends the instruction to the communication module;
the sensor signal acquisition circuit is respectively connected with the receiving ends of the sensors in the gate channel, acquires the state data of the sensors and sends the state data to the communication module;
the communication module sends instructions sent by the GCU to the door unit and state data of each sensor to the remote monitoring end through the Internet.
6. The gate traffic sensor detection device according to claim 5, wherein: the sensor signal acquisition circuit comprises an optical coupling isolation circuit and an analog-to-digital conversion circuit;
the receiving end of each sensor is connected with the input end of an optical coupling isolation circuit, the output end of the optical coupling isolation circuit is connected with the input end of an analog-to-digital conversion circuit, and the output end of the analog-to-digital conversion circuit is connected with a communication module.
7. The gate traffic sensor detection device of claim 6, wherein: the communication module comprises a 4G serial port module and a 4G transmitting antenna; the 4G serial port module is connected with the GCU signal acquisition module and the sensor signal acquisition module through the adapter plate respectively, and sends the received instructions sent by the GCU to the door unit and the state data of the sensor to the Internet through the 4G transmitting antenna.
8. The gate traffic sensor detection device of claim 7, wherein: the 4G serial port module is connected with the adapter plate through an RS232 interface.
9. The gate traffic sensor detection device of claim 8, wherein: the remote monitoring end receives instructions sent by the GCU to the door unit and state data of the sensor from the Internet through the 4G receiving antenna.
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| CN201711399773.1A CN108020872B (en) | 2017-12-21 | 2017-12-21 | Gate passing sensor detection device and method |
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| CN201711399773.1A CN108020872B (en) | 2017-12-21 | 2017-12-21 | Gate passing sensor detection device and method |
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| CN113703067B (en) * | 2021-09-09 | 2022-07-19 | 江苏汉武智能科技有限公司 | Light-sensing-based single-point partition type security inspection system and method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998043196A1 (en) * | 1997-03-21 | 1998-10-01 | Martin Jay R | Door lock control apparatus using paging communication |
| CA2311993A1 (en) * | 1999-07-07 | 2001-01-07 | Westinghouse Air Brake Company | System and method of verifying the authenticity of input signals |
| CN201188229Y (en) * | 2008-04-09 | 2009-01-28 | 天津市先志越洋科技有限公司 | Embedded control system for rail traffic special gate machine |
| CN101859448A (en) * | 2010-05-28 | 2010-10-13 | 广州市吕顺机电设备有限公司 | Ticket gate automatic detection method, ticket gate detection device and system |
| CN103235541A (en) * | 2013-05-08 | 2013-08-07 | 易程(苏州)电子科技股份有限公司 | Automatic gate control circuit |
| CN103741614A (en) * | 2013-12-14 | 2014-04-23 | 北京冶联科技有限公司 | Intelligent barrier machine and control method of intelligent barrier machine |
| CN105155964A (en) * | 2015-08-06 | 2015-12-16 | 北京中软万维网络技术有限公司 | Gate channel pat door device and control method |
| CN105182447A (en) * | 2015-09-28 | 2015-12-23 | 深圳怡化电脑股份有限公司 | Photoelectric correlation sensor detection system and method |
| CN105354898A (en) * | 2015-09-10 | 2016-02-24 | 北京中软万维网络技术有限公司 | Scissor-like door gate transit logic identification device and method |
| CN106836059A (en) * | 2017-04-06 | 2017-06-13 | 深圳市嘉昱机电有限公司 | Intelligent swing turnstile system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020078173A1 (en) * | 2000-09-25 | 2002-06-20 | Horn Paul H. | Data acquisition system and method |
-
2017
- 2017-12-21 CN CN201711399773.1A patent/CN108020872B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998043196A1 (en) * | 1997-03-21 | 1998-10-01 | Martin Jay R | Door lock control apparatus using paging communication |
| CA2311993A1 (en) * | 1999-07-07 | 2001-01-07 | Westinghouse Air Brake Company | System and method of verifying the authenticity of input signals |
| CN201188229Y (en) * | 2008-04-09 | 2009-01-28 | 天津市先志越洋科技有限公司 | Embedded control system for rail traffic special gate machine |
| CN101859448A (en) * | 2010-05-28 | 2010-10-13 | 广州市吕顺机电设备有限公司 | Ticket gate automatic detection method, ticket gate detection device and system |
| CN103235541A (en) * | 2013-05-08 | 2013-08-07 | 易程(苏州)电子科技股份有限公司 | Automatic gate control circuit |
| CN103741614A (en) * | 2013-12-14 | 2014-04-23 | 北京冶联科技有限公司 | Intelligent barrier machine and control method of intelligent barrier machine |
| CN105155964A (en) * | 2015-08-06 | 2015-12-16 | 北京中软万维网络技术有限公司 | Gate channel pat door device and control method |
| CN105354898A (en) * | 2015-09-10 | 2016-02-24 | 北京中软万维网络技术有限公司 | Scissor-like door gate transit logic identification device and method |
| CN105182447A (en) * | 2015-09-28 | 2015-12-23 | 深圳怡化电脑股份有限公司 | Photoelectric correlation sensor detection system and method |
| CN106836059A (en) * | 2017-04-06 | 2017-06-13 | 深圳市嘉昱机电有限公司 | Intelligent swing turnstile system |
Non-Patent Citations (3)
| Title |
|---|
| 《城市轨道交通屏蔽门监控管理***的设计》;付思 等;《铁路计算机应用》;第22卷(第9期);第26-29页 * |
| 王小康 等.《闸机中智能通行识别技术的研究》.《机械制造与自动化》.2016,第45卷(第2期),第225-227页. * |
| 茅飞 等.《轨道交通车站闸机智能识别研究》.《城市轨道交通研究》.2017,第20卷(第12期),第123-126页. * |
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