CN202956858U - Population density monitor - Google Patents

Population density monitor Download PDF

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Publication number
CN202956858U
CN202956858U CN 201220567374 CN201220567374U CN202956858U CN 202956858 U CN202956858 U CN 202956858U CN 201220567374 CN201220567374 CN 201220567374 CN 201220567374 U CN201220567374 U CN 201220567374U CN 202956858 U CN202956858 U CN 202956858U
Authority
CN
China
Prior art keywords
infrared
population density
monitoring
people
alarming
Prior art date
Application number
CN 201220567374
Other languages
Chinese (zh)
Inventor
魏胜非
Original Assignee
东北师范大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 东北师范大学 filed Critical 东北师范大学
Priority to CN 201220567374 priority Critical patent/CN202956858U/en
Application granted granted Critical
Publication of CN202956858U publication Critical patent/CN202956858U/en

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Abstract

The utility model relates to a population density monitor, and belongs to the electronic technical field. In order to overcome the disadvantages of a conventional population density monitoring and alarming device, a simple and practical monitoring and alarming device is provided. The monitoring and alarming device comprises a plurality of infrared emission diodes, a plurality of infrared reception sensors, an amplification conditioning circuit portion, a one-chip microcomputer, an infrared emission diode fixing support and an infrared reception sensor fixing support. When a person passes by and blocks the infrared rays, a corresponding infrared sensor does not receive infrared rays and sends signals to the one-chip microcomputer. Alternatively blocking and non-blocking of infrared rays form a pulse, of which the width is smaller, when flow of people is faster. On the contrary, the slower the flow of people, the greater the width. The number of the pulses output by the plurality of infrared sensors reflects the length of the flow of the people monitored. Whether the population density of the site monitored exceeds a normal scope can be determined according to the preset values of the number and the width of the pulses. The population density monitor is mainly used in the field of safety of elementary and secondary schools.

Description

A kind of crowd density monitoring device
Technical field
The utility model belongs to electronic technology field, refers in particular to a kind of crowd density monitoring device.
Background technology
In the crowd is dense place, because people's current density is excessive, the burst factor causes crowded mutually, tramples and causes the malignant event of casualties to occur repeatedly.Particularly some middle and primary schools' accident rates are higher.Although people take many control measures for the intensive place of colony, also immature from the research of technological layer.
What for the intensive place stream of people's monitoring, adopt at present is video monitoring or video is carried out to the image processing.If carry out video monitoring, need the monitor staff constantly to stick to post, this is difficult to realize in actual life.Video is carried out to the image processing techniques complexity, still immature for technology in this respect, be difficult for universal.
The purpose of this utility model is researched and developed a kind of easy practicality exactly, popularization is better installed, thereby effectively avoids causing due to personnel's concentrations of crowded place the generation of unscheduled event.
The utility model is mainly used in the security fields, public place, particularly the middle and primary schools security fields.
Summary of the invention
In order to overcome the deficiency of existing crowd density monitoring warning device, provide simple and practical monitoring alarm.The utility model provides a kind of crowd density monitoring device, guarantees people's life security.
The utility model solves the technical scheme that its technical matters adopts: the utility model comprises a plurality of infrared emission diodes, a plurality of infrared receiving sensor, amplifies modulate circuit part, single-chip microcomputer, infrared emission diode fixed support, infrared receiving sensor fixed support, it is characterized in that a plurality of infrared receiving sensors are evenly distributed in infrared receiving sensor fixed support.
Each infrared emission diode fixed support and infrared receiving sensor fixed support length can specifically be adjusted.Can determine infrared emission diode fixed support used and the support bracket fastened number of infrared receiving sensor according to the actual conditions in monitoring place.Infrared emission diode fixed support and infrared receiving sensor fixed support can be fixed in the both sides on walkway, monitored place.School can be directly fixed on the both sides in monitored corridor.Level altitude can be according to the corresponding adjustment of institute's Monitoring Population.Guarantee that the monitoring height is more than the following shank of the shoulder of Monitoring Population.
Place an infrared emission diode at interval of 20cm in infrared emission diode fixed support.Corresponding to an infrared receiving sensor of 20cm placement in infrared receiving sensor fixed support.Corresponding infrared emission diode through debugging, guarantees that the two point-blank with infrared receiving sensor.In other words, guarantee that the infrared-ray sensor that the infrared emission diode sends can receive.Infrared emission diode and infrared receiving sensor form infrared monitoring pair.The infrared emission diode sends infrared ray, and when have no occluder, infrared ray is received by corresponding infrared receiving sensor, and infrared receiving sensor output signal was advanced the amplification modulate circuit and is sent to single-chip microcomputer.Certainly will block infrared ray when the people passes by, make corresponding infrared sensor not receive infrared ray, sensor output signal, after modulate circuit, is sent to single-chip microcomputer.Block with do not block alternately form pulse.People's Flow Velocity is faster, makes the arteries and veins of pulse of formation narrower soon; The pulse width that contrary people's Flow Velocity forms more slowly is wider.The pulse number of a plurality of infrared sensor outputs reflects the monitored stream of people's length.According to the default definite value of pulse number and width, whether the people's current density that can judge monitoring field exceeds normal range, if go beyond the scope report to the police, reminds related personnel's reinforcement crowd to dredge work, avoids the generation of overcrowding catastrophe.Amplifying the modulate circuit part is comprised of 555 circuit and resistance.
The beneficial effects of the utility model are, when crowd density surpasses a threshold value, give the alarm, and carry out in advance the work of dredging, and avoid pernicious generation of trampling accident.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the sectional structural map of overlooking of first embodiment of crowd density monitoring device.
Fig. 2 is circuit theory diagrams of the present utility model.
1. infrared emission diode fixed supports in figure, 2. infrared emission diode, 3. infrared receiving sensor fixed support, 4. infrared receiving sensor (1), 5. single-chip microcomputer, 6.555 circuit (1), 7. infrared receiving sensor (2), 8. infrared receiving sensor (3), 9. 555 circuit (2), 10. 555 circuit (3).
Embodiment
In Fig. 1, infrared emission diode 2 is arranged in infrared emission diode fixed support 1, and infrared receiving sensor (1) 4, infrared receiving sensor (2), infrared receiving sensor (3) are installed in infrared receiving sensor fixed support 3.
In embodiment illustrated in fig. 2, infrared receiving sensor (1) 4 is connected with 4 pin and 2,6 pin of 555 circuit (1) 6, and 3 pin of 555 circuit (1) 6 are connected with single-chip microcomputer 5.

Claims (1)

1. a crowd density monitoring device, is characterized in that a plurality of infrared receiving sensors are evenly distributed in infrared receiving sensor fixed support.
CN 201220567374 2012-10-31 2012-10-31 Population density monitor CN202956858U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220567374 CN202956858U (en) 2012-10-31 2012-10-31 Population density monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220567374 CN202956858U (en) 2012-10-31 2012-10-31 Population density monitor

Publications (1)

Publication Number Publication Date
CN202956858U true CN202956858U (en) 2013-05-29

Family

ID=48462418

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220567374 CN202956858U (en) 2012-10-31 2012-10-31 Population density monitor

Country Status (1)

Country Link
CN (1) CN202956858U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103583402A (en) * 2013-11-16 2014-02-19 大连岭前农业专业合作社 Temperature adjusting system for quail brooding house
CN104318712A (en) * 2014-11-13 2015-01-28 兴化市第二实验小学 Corridor stampede-preventing warning device
CN104680712A (en) * 2015-01-28 2015-06-03 华南农业大学 Anti-trampling prewarning system for people crowded region and implementation method for anti-treading prewarning system
CN108614651A (en) * 2018-04-19 2018-10-02 维沃移动通信有限公司 A kind of mobile terminal and infrared detection method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103583402A (en) * 2013-11-16 2014-02-19 大连岭前农业专业合作社 Temperature adjusting system for quail brooding house
CN104318712A (en) * 2014-11-13 2015-01-28 兴化市第二实验小学 Corridor stampede-preventing warning device
CN104680712A (en) * 2015-01-28 2015-06-03 华南农业大学 Anti-trampling prewarning system for people crowded region and implementation method for anti-treading prewarning system
CN108614651A (en) * 2018-04-19 2018-10-02 维沃移动通信有限公司 A kind of mobile terminal and infrared detection method
CN108614651B (en) * 2018-04-19 2020-06-16 维沃移动通信有限公司 Mobile terminal and infrared detection method

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130529

Termination date: 20131031