CN104077896A - Reading and writing posture reminder - Google Patents

Abstract

The invention discloses a reading and writing posture reminder. The reading and writing posture reminder is a mini-sized electronic product fastened on adolescent students' coat pockets when the students do homework at home and the main function of the reminder is that incorrect reading and writing postures can be reminded. One major reason for that adolescents suffer from myopia is that people don't attach great importance to eye health, so that more adolescents are incorrect in the reading and writing postures when doing heavy homework. When the reading and writing postures are incorrect, the reading and writing posture reminder can make a sound: attention please, nearsightedness, sit up quickly. According to the invention, female voice can effectively help the students correct sitting postures and lower the morbidity of adolescent myopia; the reading and writing posture reminder has the advantages of small size, low power consumption, high performance cost ratio, convenience for utilization and the like.

Description

Read-write posture reminder

Technical field

The invention belongs to miniature electronic product, be specifically related to a kind of read-write posture reminder.

Background technology

It is to start to think little of eye hygiene from little mostly that teenager suffers from a bathomorphic major reason, be included in and in heavy homework, present the incorrect factor of more adolescent student read-write posture, and the head of a family's supervision sitting posture correcting function is necessary but the time is limited; If realizing and automatically reminding the sitting posture of correction adolescent student operation is the first meaning that produces this invention product; Also there is no in the market like product.

Summary of the invention

The technical solution adopted in the present invention is that a kind of read-write posture reminder, is characterized in that: comprise that power-supplying circuit, alerting signal trigger processing integrated circuit, alerting signal amplifies and output circuit; Power-supplying circuit positive terminal is connected with pin 3 ends of mercury cut-off K one end, resistor R1 one end, loudspeaker B one end, integrated circuit (IC) respectively after connecting power switch S; Power-supplying circuit negative pole end is connected with the emitter of pin 1 end of capacitor C1 one end, capacitor C2 one end, integrated circuit (IC), resistor R2 one end, triode VT respectively; Pin 7 ends that alerting signal triggers processing integrated circuit (IC) are connected with the mercury cut-off K other end, pin 9 ends of integrated circuit (IC) are connected with the resistor R1 other end, the capacitor other end, pin 13 ends of integrated circuit (IC) are directly connected with pin 8 ends, pin 12 ends and pin 6 ends of integrated circuit (IC) directly join, pin 11 ends of integrated circuit (IC) are connected the capacitor C2 other end after being directly connected with pin 2 ends, and its pin 15 ends are connected with the resistor R2 other end, transistor base; Alerting signal amplifies and output circuit triode VT collector connects the loudspeaker other end.

beneficial effect: use read-write posture reminder of the present invention, when read-write posture is incorrect, it will send and " please note! Myopia! Fast just a seat! " female's voice message sound, can effectively help student to correct faulty sitting posture, reduce the incidence of disease of juvenile shortsightedness; This electronic product has the advantages such as volume is little, power consumption is little, cost performance is high, easy to use.

accompanying drawing explanation

Fig. 1 is read-write posture reminder fundamental diagram of the present invention.

Embodiment

Below in conjunction with accompanying drawing 1, the invention will be further described:

Accompanying drawing 1 is read-write posture reminder principle of work circuit diagram provided by the invention.Read-write posture reminder is to put while doing one's assignment in the family as adolescent student, ties up to the miniature electronic product on student's upper garment mouth; Core components and parts are integrated circuit die I C, and its model is KD-56028, and as shown in the figure, when pin 7 ends of integrated circuit die I C are triggered by high level, loudspeaker is just play " please noting of storing up in! Myopia! Fast just a seat! " female's voice message sound, can effectively reduce the incidence of disease of juvenile shortsightedness.When students' work or reading are used, the fixing system of read-write posture reminder level is placed on collar mouth, closed electrical source switch S, in figure, K is mercury cut-off, mercury is liquid metals, and when read-write posture is correct, mercury cut-off disconnects, pin 7 ends of integrated circuit (IC) chip KD-56028 are low level, and circuit is in static not sounding state; When read-write posture is incorrect, switch contact K is by the conducting of energy conducting metal mercury, and integrated circuit (IC) pin 7 ends are subject to the triggering of a high level, and the pin 15 ends outputs of integrated circuit (IC) " please note for one time! Myopia! Fast just a seat! " female's voice message sound high level weak signal, through power amplification triode VT, amplify rear drive loudspeaker B sounding.If it is incorrect that sitting posture is still protected, prompting sound is output successively, until sitting posture is correct.In accompanying drawing, resistor R1 and capacitor C1 are external oscillation resistance device and the capacitor of chip KD-56028, change its Digital size parameter, can regulate the tone height of speech sound.

The selection of components and parts: power amplification triode VT adopts C9013 type NPN type triode; Resistor R1, resistor R2 adopt RTX-1/8W type carbon film resistor, and resistance is respectively 330K Ω, 1K Ω; Capacitor C1 adopts 51pF, capacitor C1 to adopt the common ceramic capacitor of 0.047uF; Loudspeaker B adopts membrane type dynamic loudspeaker in YD50-1 type 8 Ω; Power supply G adopts No. 7 batteries of two joints; K adopts the small and exquisite mercury conductive switch of volume, and S adopts toggle switch; Integrated circuit die I C, the model of employing is KD-56028.

Above-mentioned components and parts welding is contained on the pcb board of a 5*5cm, and is fixed in the plastic casing of a 6*6*4cm, and in plastic casing side, opening a diameter is that 5cm opening is installed loudspeaker B; Circuit install main points be mercury cut-off K in the position of box the inside: require plastic casing to be placed on fixedly to tie up to operation or the student's that reads jacket neckline on sitting posture square one's shoulders when correct, mercury cut-off interior contacts is disconnected, loudspeaker does not send voice prompt; When sitting posture inclines Dou when incorrect, mercury cut-off interior contacts is connected, and loudspeaker sends and " please notes! Myopia! Fast just a seat! " woman's voice prompt; To sitting correctly for this reason to student.

Although 1 described embodiments of the present invention and main devices basic parameter by reference to the accompanying drawings, the protection domain that those of ordinary skills do not need various distortion that creativity work just can make or modification still to belong to this patent within the scope of the appended claims.

Claims (1)

1. a read-write posture reminder, is characterized in that: comprise that power-supplying circuit, alerting signal trigger processing integrated circuit, alerting signal amplifies and output circuit; Power-supplying circuit positive terminal is connected with pin 3 ends of mercury cut-off K one end, resistor R1 one end, loudspeaker B one end, integrated circuit (IC) respectively; Power-supplying circuit negative pole end is connected with the emitter of pin 1 end of capacitor C1 one end, capacitor C2 one end, integrated circuit (IC), resistor R2 one end, triode VT respectively; Pin 7 ends that alerting signal triggers processing integrated circuit (IC) are connected with the mercury cut-off K other end, pin 9 ends of integrated circuit (IC) are connected with the resistor R1 other end, the capacitor other end, pin 13 ends of integrated circuit (IC) are directly connected with pin 8 ends, pin 12 ends and pin 6 ends of integrated circuit (IC) directly join, pin 11 ends of integrated circuit (IC) are connected the capacitor C2 other end after being directly connected with pin 2 ends, and its pin 15 ends are connected with the resistor R2 other end, transistor base; Alerting signal amplifies and output circuit triode VT collector connects the loudspeaker other end.