CN202956858U - Population density monitor - Google Patents
Population density monitor Download PDFInfo
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- 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
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- infrared
- population density
- monitoring
- people
- alarming
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- 230000003321 amplification Effects 0.000 abstract description 2
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- 230000000051 modifying Effects 0.000 description 4
- 210000001367 Arteries Anatomy 0.000 description 1
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- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
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- 210000001699 lower leg Anatomy 0.000 description 1
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- 230000000505 pernicious Effects 0.000 description 1
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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
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.
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)
| 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 |
-
2012
- 2012-10-31 CN CN 201220567374 patent/CN202956858U/en not_active IP Right Cessation
Cited By (5)
| 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 |