CN213022077U - Schoolbag pressure monitoring alarm device - Google Patents

Schoolbag pressure monitoring alarm device Download PDF

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Publication number
CN213022077U
CN213022077U CN202022385655.9U CN202022385655U CN213022077U CN 213022077 U CN213022077 U CN 213022077U CN 202022385655 U CN202022385655 U CN 202022385655U CN 213022077 U CN213022077 U CN 213022077U
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CN
China
Prior art keywords
pressure
schoolbag
pressure monitoring
alarming device
analog
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Expired - Fee Related
Application number
CN202022385655.9U
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Chinese (zh)
Inventor
彭俣淇
雷美珍
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Priority to CN202022385655.9U priority Critical patent/CN213022077U/en
Application granted granted Critical
Publication of CN213022077U publication Critical patent/CN213022077U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a schoolbag pressure monitoring alarm device, including installing two pressure measurement sensor in the shoulder side of laminating respectively in schoolbag both sides baldric, and install the battery on the schoolbag, the singlechip, analog-to-digital conversion module, bee calling organ, key switch, two pressure measurement sensor carry out data conversion processing through analog-to-digital conversion module with the pressure value that detects, data transmission after the conversion gives the singlechip, the singlechip adds the pressure value of two pressure measurement sensor feedbacks after and carries out the comparison with the settlement pressure threshold value, it triggers bee calling organ and carries out the early warning and remind to exceed pressure threshold value singlechip. The schoolbag pressure monitoring and alarming device provided by the utility model has simple structure design and low manufacturing cost, can be directly installed on a schoolbag for use, and can accurately measure the pressure; the storage battery is adopted for power supply, the charging can be repeated, and the weight is light and the environment is protected.

Description

Schoolbag pressure monitoring alarm device
Technical Field
The utility model relates to a pressure measurement technical field specifically indicates a schoolbag pressure monitoring alarm device.
Background
Along with the development of regional urbanization, the population is gradually increased, and the competition on education is more and more intense. Even elementary school students need to carry a heavy schoolbag to go up and down to study, especially students need to go up to study on foot in some regions with inaccessible traffic, the overweight schoolbag has great influence on the body development of the students, and even causes spinal curvature and high and low shoulders. Research shows that the weight of the schoolbag is better not to exceed 10 percent of the weight of the body, and it is necessary to remind students to reduce the weight of the schoolbag in time, and meanwhile, the school is called to relieve the burden of the students by the technology.
At present, pressure measuring sensors and systems are used in many fields, but there are few schoolbag pressure detecting systems and apparatuses. Schoolbag design of schoolbag manufacturing enterprises emphasizes appearance and quality, and easily neglects the problem of influence of schoolbag on children's health. The pressure monitoring alarm device is arranged on the schoolbag, an early warning and reminding effect can be achieved, and the health of students can be maintained.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a schoolbag pressure monitoring alarm device adopts flexible film pressure sensor laminating to shoulder the inboard at the schoolbag, can not influence the normal use of schoolbag, can also in time monitor the pressure that receives on the shoulder, can play superpressure early warning suggestion effect to student or head of a family in time carry out weight reduction for the schoolbag.
In order to realize the above purpose, the utility model discloses the technical scheme who adopts is:
the utility model provides a schoolbag pressure monitoring alarm device, including installing respectively at two pressure cell sensors of schoolbag both sides baldric laminating shoulder side to and install the battery on the schoolbag, the singlechip, analog-to-digital conversion module, bee calling organ, key switch, two pressure cell sensors carry out data conversion processing through analog-to-digital conversion module with the pressure value that detects, data after the conversion are carried for the singlechip, the singlechip adds the pressure value of two pressure cell sensor feedbacks the back and compares with the settlement pressure threshold value, exceed pressure threshold value singlechip trigger bee calling organ and carry out the early warning and remind.
Further, the pressure measuring sensor adopts a flexible film pressure sensor SF 45-65.
Further, the singlechip adopts an STC89C52 chip.
Further, the analog-to-digital conversion module adopts an ADC0809 chip.
Further, the buzzer is of a TMB12A12 model.
Furthermore, the single chip microcomputer is also connected with the liquid crystal display screen module.
Further, the LCD module adopts an LCD1602 display screen.
Furthermore, a sensitivity adjusting rheostat is connected between the liquid crystal display screen module and the storage battery.
The schoolbag pressure monitoring and alarming device provided by the utility model has simple structure design and low manufacturing cost, can be directly installed on a schoolbag for use, and can accurately measure the pressure; the storage battery is adopted for power supply, the charging can be repeated, and the weight is light and the environment is protected.
Drawings
Fig. 1 is a schematic diagram of a pressure monitoring alarm device in an embodiment of the present invention;
FIG. 2 is a circuit diagram of a control part of a singlechip in the pressure monitoring alarm device;
FIG. 3 is a circuit diagram of a pressure acquisition and analog-to-digital conversion part in the pressure monitoring alarm device;
FIG. 4 is a circuit diagram of a display and alarm portion of the pressure monitoring alarm device;
fig. 5 is a dimension diagram of a pressure sensor in the pressure monitoring alarm device.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The embodiment discloses a schoolbag pressure monitoring alarm device, as shown in fig. 1 to 5, the pressure monitoring alarm device mainly comprises a single chip microcomputer U2, a buzzer LS1, a key switch SW1, an analog-to-digital conversion module L1, a liquid crystal display screen P3, a storage battery, two pressure measuring sensors U1 and U3. The pressure measuring sensor is a flexible film pressure sensor SF45-65, is directly attached to the inner side surfaces of two shoulder straps of the schoolbag, namely is attached to one side of a shoulder, so that the pressure can be conveniently and accurately measured, and the shoulder can not be uncomfortable. And other modules can be installed in the front of the shoulder strap, so that the pressure value can be conveniently set and checked. The key switch is used for setting a pressure threshold value, the liquid crystal display screen is used for displaying the monitored pressure value, the pressure measuring sensors transmit the analog quantity of the pressure value to the analog-to-digital conversion module for analog-to-digital conversion processing, the single chip microcomputer receives the pressure data processed by the analog-to-digital conversion module for processing, the pressure values collected by the two pressure measuring sensors are added, the added pressure value is compared with the set pressure threshold value by the single chip microcomputer, and if the pressure value exceeds the pressure threshold value, the buzzer is triggered for early warning.
The single chip microcomputer controls the sequence of the analog-to-digital conversion module for receiving signals of the two pressure measuring sensors by controlling the three pins P2.3, P2.4 and P2.5, and the pins P0.0 to P0.7 of the single chip microcomputer are connected to the pins D0 to D7 of the analog-to-digital conversion module. The single chip microcomputer firstly sends a control signal to one of the pressure sensors to obtain a first group of pressure Data1, then the single chip microcomputer sends a pressure measuring signal to the other pressure sensor to obtain a second group of pressure Data2, and finally the two groups of Data are added.
Pins P1.0 to P1.7 of the singlechip are connected with pins 7 to 14 of the liquid crystal display screen, and pins P2.0 to P2.2 of the singlechip are respectively connected with a register selection bit RS, a read-write signal line RW and an enable bit EN of the liquid crystal display screen to control the writing and reading of data. The single chip microcomputer sends an instruction to the liquid crystal display module, and the transmitted pressure value is displayed on a screen. In order to adjust the brightness of the display screen conveniently, the sensitivity adjusting rheostat R9 is connected to the storage battery power supply and the third pin of the liquid crystal display screen, and the brightness of the display screen can be adjusted by changing the resistance value of R9 and adopting a resistance voltage division mode.
The P2.6 pin of the single chip microcomputer is connected with a buzzer, and the buzzer is triggered to give an alarm once the monitored pressure value exceeds a pressure threshold value, so that students are reminded to take corresponding measures.
The specific models of the modules in this embodiment are as follows: the singlechip adopts STC89C52 chip, and the analog-to-digital conversion module adopts ADC0809 chip, and the buzzer adopts TMB12A12 model, and the LCD screen module adopts LCD1602 display screen.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a schoolbag pressure monitoring alarm device which characterized in that: the pressure measurement device comprises two pressure measurement sensors which are respectively arranged on shoulder straps on two sides of a schoolbag and attached to shoulder sides, a storage battery, a single chip microcomputer, an analog-to-digital conversion module, a buzzer and a key switch which are arranged on the schoolbag, wherein the two pressure measurement sensors perform data conversion processing on detected pressure values through the analog-to-digital conversion module, the converted data are transmitted to the single chip microcomputer, the single chip microcomputer compares the pressure values fed back by the two pressure measurement sensors after adding with a set pressure threshold value, and the single chip microcomputer triggers the buzzer to perform early warning when the pressure values exceed.
2. The schoolbag pressure monitoring and alarming device as claimed in claim 1, wherein: the pressure sensor adopts a flexible film pressure sensor SF 45-65.
3. The schoolbag pressure monitoring and alarming device as claimed in claim 1, wherein: the singlechip adopts an STC89C52 chip.
4. The schoolbag pressure monitoring and alarming device as claimed in claim 1, wherein: the analog-to-digital conversion module adopts an ADC0809 chip.
5. The schoolbag pressure monitoring and alarming device as claimed in claim 1, wherein: the buzzer is of a TMB12A12 model.
6. The schoolbag pressure monitoring and alarming device as claimed in claim 1, wherein: the single chip microcomputer is also connected with the liquid crystal display screen module.
7. The schoolbag pressure monitoring and alarming device as claimed in claim 6, wherein: the LCD module adopts an LCD1602 display screen.
8. The schoolbag pressure monitoring and alarming device as claimed in claim 6, wherein: and a sensitivity adjusting rheostat is connected between the liquid crystal display screen module and the storage battery.
CN202022385655.9U 2020-10-23 2020-10-23 Schoolbag pressure monitoring alarm device Expired - Fee Related CN213022077U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022385655.9U CN213022077U (en) 2020-10-23 2020-10-23 Schoolbag pressure monitoring alarm device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022385655.9U CN213022077U (en) 2020-10-23 2020-10-23 Schoolbag pressure monitoring alarm device

Publications (1)

Publication Number Publication Date
CN213022077U true CN213022077U (en) 2021-04-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022385655.9U Expired - Fee Related CN213022077U (en) 2020-10-23 2020-10-23 Schoolbag pressure monitoring alarm device

Country Status (1)

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CN (1) CN213022077U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114215564A (en) * 2021-12-15 2022-03-22 北京康宁电通科技发展有限公司 Intelligent early warning method for coal mine support equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114215564A (en) * 2021-12-15 2022-03-22 北京康宁电通科技发展有限公司 Intelligent early warning method for coal mine support equipment
CN114215564B (en) * 2021-12-15 2023-11-28 北京康宁电通科技发展有限公司 Intelligent early warning method for coal mine supporting equipment

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210420

Termination date: 20211023