CN209474020U - A kind of myopic-preventing rack for reading book - Google Patents

Abstract

The utility model relates to a kind of myopic-preventing rack for reading book, put book overlying regions equipped with range finder module, light sensation module, the timing module with display screen and sound alarm module in bookshelf bottom plate, and be provided with sensing device in the book region of putting of bookshelf bottom plate.When sensing device has monitored that book is placed on bookshelf bottom plate, start range finder module, light sensation module, timing module and alarm module immediately.After timing module starting, record reading time is shown on screen, is alerted when reading time is too long；Reading distance is monitored after range finder module starting, is alerted when hypotelorism；Base plate vicinity brightness is monitored after the starting of light sensation module, is alerted when brightness is too high or too low.The bookshelf can monitor reading time, reading distance and the reading environment brightness of reading person simultaneously, can effectively pre- myopia prevention, the measurement of reading distance it is also more accurate.Since bookshelf realizes the self-starting function that books are put, more convenient and quicker using sensing device.

Description

A kind of myopic-preventing rack for reading book

Technical field

The utility model belongs to educational outfit technical field, is related to a kind of myopic-preventing rack for reading book.

Background technique

Study and learning is the indispensable activity of people, and especially student is even more so.But in the process of reading, long Time eye, eyes and books hypotelorism, reading environment light are too strong or excessively weak these three situations extremely be easy to cause reading The eye fatigue of person pays no heed to and is likely to cause myopia, especially adolescent student even more serious.Currently, rack for reading book Generally be fixedly clamped books function, and there are also some tilt angles and height function for having and adjusting bookshelf.

It for anti-myopia bookshelf, is found through retrieval, Chinese invention patent (application number: 201410764388.2) discloses one Kind can monitor the reading-rack of reading sitting posture, using the ultrasonic distance measuring module monitoring reading being installed among reading-rack lower panels Whether distance is rectified using folding level ruler monitoring scholar's sitting posture.Chinese utility model patent (application number: 201621049444.5) it disclosing one kind and puts near-sighted rack for reading book, middle position is equipped with ranging inductive head on front side of bookshelf seat stand, Monitor people and seat stand distance.

As it can be seen that common anti-myopia bookshelf can solve reading hypotelorism using range finding probe is installed on the downside of bookshelf Problem, but not can solve the other two kinds problems for easily causing myopia.Additionally due to be mounted on the downside of bookshelf, monitoring be bookshelf with The distance between reader's chest, and monitoring is actually needed should be distance between bookshelf and reader head, deposit between the two In certain deviation.

Summary of the invention

To solve above-mentioned deficiency in the prior art, the utility model proposes a kind of novel myopia prevention rack for reading book.

Myopic-preventing rack for reading book provided by the utility model, including the bookshelf bottom plate for fixing books, and with electricity The relay switch of source connection, the bookshelf bottom plate, which has, puts book region, it is characterised in that: in the area Fang Shu of the bookshelf bottom plate Range finder module, light sensation module, the timing module with display screen and sound alarm module are housed, in the bookshelf bottom plate above domain It puts book region and is provided with sensing device for controlling the relay switch；The range finder module, light sensation module, timing module It is connected to power supply with the power input of sound alert module by relay switch, the range finder module, light sensation module and fixed When module by signal delivery outlet connect respectively with the control mouth of audible alert module through electronic switch driving circuit.

When sensing device has monitored that book is placed on bookshelf bottom plate, start immediately the range finder module, light sensation module, Timing module and alarm module.

Timing is immediately begun to after timing module starting, while the reading time of timing being shown on a display screen；Work as reading When time is greater than setting upper limit time value, to the long alarm signal of alarm module sending time.

After range finder module starting, by real-time monitoring reading person apart from books distance；Lower range line is set when monitoring distance is less than When from value, to the nearly alarm signal of alarm module transmission range.

After the starting of light sensation module, by the illuminance of real-time monitoring bookshelf base plate vicinity；When monitoring brightness is less than setting lower limit When brightness value, the low alarm signal of brightness is sent to alarm module；When monitoring brightness greater than setting upper limit brightness value, to alarm mould Block sends the high alarm signal of brightness.

In addition, alarm module issues different alarm sounds for different alarm signals.

The utility model can monitor reading time, reading distance and reading environment brightness compared with existing bookshelf simultaneously, In time to long-time eye, eyes and books hypotelorism, reading environment light is too strong or excessively weak these three situations alert. Wherein, range finder module is put on the upside of bookshelf bottom plate, and measurement is head at a distance from books, and data are more accurate.Further, since Using sensing device, the self-starting function after books are put may be implemented, be not necessarily to manual setting, it is convenient and efficient.

Detailed description of the invention

Fig. 1 is the utility model book-house structure schematic diagram.

Fig. 2 is the circuit part design drawing of bookshelf.

Fig. 3 is electronic switch driving circuit.

Fig. 4 is the electronic switch driving circuit with reverse phase.

Figure label is schematically as follows:

1- bookshelf bottom plate, 2- timing module, 3- range finder module, 4- light sensation module, 5- sound alarm module, 6- induction dress It sets, 7- puts book region.

Specific embodiment

For the purpose of this utility model, technical solution and advantage is more clearly understood, with reference to the accompanying drawings and embodiments, The present invention will be further described in detail.

Bookshelf main part in Fig. 1 is the bookshelf bottom plate 1 that can fix books, and centre is to put book region 7.In the area Fang Shu 7 top of domain, i.e., dress is sequentially arranged with the timing module 2 with display screen, range finder module 3,4 harmony of light sensation module on the upside of bookshelf bottom plate 1 Sound alarm module 5.There are also sensing device 6 is provided in the book region 7 of putting of bookshelf bottom plate 1, for having monitored whether that books are placed on On bookshelf bottom plate 1.

When the sensing device 6 has monitored that book is placed on bookshelf bottom plate 1, start range finder module 3, light sensation module immediately 4, timing module and sound alarm module 5.

Wherein, timing is immediately begun to after timing module starting, while on a display screen by the time showing of timing, it is usually aobvious Two hourages and two the number of minutes are shown as, successively the time is as reading time.When reading time is greater than setting upper limit time value When, the long alarm signal of Xiang Suoshu alarm module sending time.Its upper limit time value is traditionally arranged to be between 40 minutes to 1 hour.

After range finder module starting, by real-time monitoring reading person apart from books distance；Lower range line is set when monitoring distance is less than When from value, the nearly alarm signal of Xiang Suoshu alarm module transmission range.Its lower limit distance value is traditionally arranged to be 25 centimetres or so.

After the starting of light sensation module, by the illuminance of real-time monitoring bookshelf base plate vicinity；When monitoring brightness is less than setting lower limit When brightness value, the low alarm signal of brightness is sent to alarm module；When monitoring brightness greater than setting upper limit brightness value, to alarm mould Block sends the high alarm signal of brightness.Its lower limit illuminance value is generally located on 150Lux or so, and upper limit illuminance value is generally arranged In 600Lux or so.

In addition, alarm module can issue different alarm sounds for different alarm signals, in order to reader Solve the type of alarm.

As further limiting for the utility model, sensing device is also range finder module, when the distance of measurement is minimum, then Book is determined with to put on the shelf.

To realize that above-mentioned technical proposal, type selecting and the circuit design of modules are described as follows:

Timing module selects the YYC-2S type time-delay relay module of Shenzhen Yue Yu electronics scientific technology co.When the module timing Between adjusted by button, and shown on charactron, timing one arrives, the actuating of relay, can export alarm of long duration and believe Number.

Range finder module uses infrared light precision distance measurement sensor, which has output switch parameter, and has calibration thresholding It is worth function, i.e., low level is exported as apart from nearly alarm signal by interface when ranging is less than threshold value.

Light sensation module uses Risym photosensitive resistance sensor module, which is adjusted by the potentiometer in adjustment module Whole luminance threshold, high level is exported when threshold value is not achieved in light luminance, exports low level when light luminance is more than threshold value.For Upper limit value and lower limit value in implementation detect, and two groups of photosensitive resistance sensor modules can be used herein.Wherein A group senses Device module threshold is set as lower limit value, and output high level occurs monitoring brightness in scheme less than setting lower limit brightness value feelings Condition；B group sensor die block threshold value is set as upper limit value, and output low level occurs monitoring brightness in scheme greater than the setting upper limit Brightness value situation.As shown in Fig. 2, A group delivery outlet is low-light level monitoring signals delivery outlet, B group delivery outlet is high brightness detection letter Number delivery outlet.

Sound alarm module uses multi-path voice prompting device, sets " level keeps recyclable " state for the product, i.e., Loop play corresponding music when certain detects low level all the way, and when detecting high level, stop playing music.

According to above-mentioned module type selecting, the circuit part design of entire bookshelf is as shown in Figure 2.Wherein, sensing device is used to supervise Whether have book put on the shelf, can select Weighing module, obstacle avoidance module and infrared induction module etc. to realize induction function if surveying Can, a range finder module can also be reused.Its threshold value is arranged to 2 centimetres or so.

When there is book to put on the shelf, when range finder module monitors that distance is less than threshold value, low level is exported, controls relay Module conducting, introduces power supply line for power supply, i.e., powers on to modules, realize the starting of modules.

For timing module, can by its relay common end grounding, when present between when alerting long, relay conducting is defeated There is low level；Alarm module control mouth 1 begins to play the 1st song after receiving the low level.

For range finder module, when appearance distance closely alerts, output switch parameter mouth directly exports low level；Alarm module control After donsole 2 receives the low level, begin to play the 2nd song.

For light sensation module, when monitoring brightness is less than setting lower limit brightness value, that is, when there is the low alarm of brightness, A group is sensed Device module exports high level, is changed into low level submitting after inverted；After alarm module control mouth 3 receives the low level, just Start to play the 3rd song.When monitoring brightness is greater than setting upper limit brightness value, that is, the alarm of brightness height occurs, B group sensor die Block exports low level；After alarm module control mouth 4 receives the low level, begin to play the 4th song.

In addition, each road alarm signal can by field-effect tube, triode or relay construct electronic switch driving circuit come Sound alarm module sounding is controlled, to promote the control reliability of four tunnel alarm signals.The relay delivery outlet of range finder module, The output switch parameter mouth of range finder module, the B group delivery outlet of light sensation module are distinguished by electronic switch driving circuit as shown in Figure 3 It is connected in the control mouth 1,2,4 of sound alarm module, the A group delivery outlet of light sensation module then passes through electricity as shown in Figure 4 with reverse phase The connection of the control mouth 3 of sub switch driving circuit and sound alarm module.Electronic switch driving circuit as shown in Figure 3 is P-channel Enhanced field-effect electronic switch, input low level export low level after field-effect tube conducting.As shown in figure 4, the electricity with reverse phase Sub switch driving circuit be the enhanced field-effect electronic switch of N-channel, input high level, field-effect tube conducting, export as low electricity It is flat.

By above-mentioned specific embodiment as it can be seen that the myopic-preventing bookshelf can remind reading when occurring using eye for a long time Person notices that eyes are rested, and squares one's shoulders to increase reading distance eyes occur and reader is reminded when books hypotelorism to come back, Reader is reminded to adjust suitable light or selection solution space to read when reading environment light is too strong or excessively weak.Therefore the bookshelf Three kinds of typical problems for easily causing myopia in reading can be solved simultaneously, function well as pre- myopic-preventing effect.

Meanwhile range finder module is put on the upside of bookshelf bottom plate, measured distance is head at a distance from books, compared to more existing Have and measure chest in technology at a distance from books, is closer to actual reading distance, accuracy is higher.

In addition, the starting of the device monitoring is triggered by sensing device, that is, there are books to be placed on self-starting when on bookshelf bottom plate, nothing Manual control operation is needed, it is more convenient to use, it is also more intelligent.

Above description is merely a prefered embodiment of the utility model, on the protection scope of the utility model is not limited in Embodiment is stated, all technical solutions for belonging to the utility model principle belong to the protection scope of the utility model.For this For the technical staff in field, several improvements and modifications carried out without departing from the principle of this utility model, these change It also should be regarded as the protection scope of the utility model into retouching.

Claims (5)

1. a kind of myopic-preventing rack for reading book, including the bookshelf bottom plate for fixing books, and the relay connected to power supply Switch, the bookshelf bottom plate, which has, puts book region, it is characterised in that: puts book overlying regions equipped with ranging in the bookshelf bottom plate Module, light sensation module, the timing module with display screen and sound alarm module are provided in the book region of putting of the bookshelf bottom plate For controlling the sensing device of the relay switch；The range finder module, light sensation module, timing module and sound alert module Power input connected to power supply by relay switch, the range finder module, light sensation module and timing module signal output Mouth is connect with the control mouth of audible alert module respectively through electronic switch driving circuit.

2. myopic-preventing rack for reading book according to claim 1, it is characterised in that: the sensing device be range finder module, One of Weighing module, obstacle avoidance module or infrared induction module.

3. myopic-preventing rack for reading book according to claim 1, it is characterised in that: timing module is time-delay relay mould Block, range finder module are infrared light precision distance measurement sensor, and the light sensation module is photosensitive resistance sensor module, the sound Alarm module is multi-path voice prompting device.

4. myopic-preventing rack for reading book according to claim 3, it is characterised in that: the sound alarm module has four There is low-light level monitoring signals delivery outlet and high brightness to detect signal output for a control mouth, light sensation module, timing module after Two signal outputs of electric appliance delivery outlet, the output switch parameter mouth of range finder module and light sensation module drive through electronic switch respectively Four control mouths of circuit and sound alarm module connect correspondingly.

5. myopic-preventing rack for reading book according to claim 4, it is characterised in that: the low-light level with light sensation module, which monitors, to be believed The electronic switch driving circuit of number delivery outlet connection is the electronic switch driving circuit with reverse phase.