CN203608949U - Backpack capable of measuring weight - Google Patents
Backpack capable of measuring weight Download PDFInfo
- Publication number
- CN203608949U CN203608949U CN201320714838.8U CN201320714838U CN203608949U CN 203608949 U CN203608949 U CN 203608949U CN 201320714838 U CN201320714838 U CN 201320714838U CN 203608949 U CN203608949 U CN 203608949U
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- chip microcomputer
- weight
- knapsack
- alarm
- signal
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Abstract
The utility model relates to a backpack capable of measuring the weight. The backpack comprises a backpack body, two pressure sensors, an A/D (analog to digital) conversion module, a single-chip microcomputer, an adjustable resistor, a button, a displayer and an alarm, wherein the pressure sensors mounted in shoulder stress positions of two straps of the backpack body respectively acquire pressure signals and convert the pressure signals into electric signals, and the electric signals are converted into digital signals by the A/D conversion module and sent to the single-chip microcomputer; the adjustable resistor and the button send a set signal to the single-chip microcomputer; the single-chip microcomputer processes data and then sends weight data to the displayer for display, and meanwhile, an alarm signal is sent to the alarm. The backpack not only can display the weight of an object directly, but also has an alarm function under the condition that the object is overweight or the weight difference of two shoulders is larger, and in addition, the overweight and a threshold value of the pressure difference of the two shoulders can be adjusted.
Description
Technical field
The utility model relates to a kind of knapsack, particularly a kind ofly can be used for measuring the weight of object the knapsack giving the alarm.
Background technology
In life, knapsack is daily necessities, the especially student that people often use, and knapsack has almost been followed the whole school-days.Whether a lot of people wish to know the weight of object in own knapsack, also have the pressure of both shoulders similar, but general knapsack does not possess the function that shows weight, also do not possess and remind the stressed whether consistent function of both shoulders.
Summary of the invention
The utility model is too heavy for student's school bag or left and right is uneven can affect the healthy problem of student, a kind of knapsack of measuring weight has been proposed, not only can directly show the weight of object, and also there is warning function in overweight or the larger situation of both shoulders weight difference, in addition, weight is excessive also adjustable with threshold value both shoulders pressure differential.
The technical solution of the utility model is: a kind of knapsack of measuring weight, comprise knapsack, also comprise two pressure sensors, A/D modular converter, single-chip microcomputer, adjustable resistance, button, display and alarm, the pressure sensor that is contained in respectively the stressed position of shoulder of two braces of knapsack gathers pressure signal and is converted to the signal of telecommunication, and the signal of telecommunication becomes data signal through A/D modular converter and delivers to single-chip microcomputer; Signalization is delivered to single-chip microcomputer by adjustable resistance and button; To data after treatment, single-chip microcomputer send display to show weight data to single-chip microcomputer, and alarm signal is sent alarm simultaneously.
Described two pressure sensors are selected the FSR402 of same model, and two pressure sensor output electrical signals, after A/D modular converter TLC0831 conversion, are sent into single-chip microcomputer C8051F.
The beneficial effects of the utility model are: the utility model can be measured the knapsack of weight, can directly on charactron, show the weight of object, and the pressure differential of or Braces hanged over tow shoulders too heavy when object is too large to such an extent as to while being greater than setting value, send different alarm songs.
Accompanying drawing explanation
Fig. 1 is the knapsack circuit block diagram that the utility model can be measured weight;
Fig. 2 is the knapsack structure schematic diagram that the utility model can be measured weight;
Fig. 3 is the knapsack side structure schematic diagram that the utility model can be measured weight.
The specific embodiment
Can measure as shown in Figure 1 the knapsack circuit diagram of weight, pressure is converted to the signal of telecommunication by two pressure sensors 1, and the signal of telecommunication becomes digital voltage signal through A/D modular converter 4 and delivers to single-chip microcomputer 7; Adjustable resistance 2 and button 3 arrange, and signalization is delivered to single-chip microcomputer 7; To data after treatment, weight data send display 5 to show to single-chip microcomputer 7, and as overweight or unbalanced value arrive setting threshold, output alarm signal gives the alarm to siren 6.
Can measure as shown in Figure 2,3 the knapsack back side and the side structure schematic diagram of weight, two pressure sensors 1 are contained in respectively the stressed position of shoulder of two braces of knapsack, and power supply and data wire 8 are also all embedded in braces and back pad inner side prevents exposed.Surface-mounted integrated circuit 9 comprises single-chip microcomputer 7, A/D modular converter 4, is placed in inside school bag in knapsack pad, the shortest with the distance of each module as much as possible.Switch and display floater 10 are placed in school bag right lateral surface, are convenient to observe and arrange.Alarm 6 is placed in school bag left side.Power supply 11 is placed in surface-mounted integrated circuit 9 sides.
Two pressure sensors 1 are selected identical FSR402, and the pressure sum on such two pressure sensors is just approximately equal to the gravity sum of object in knapsack and knapsack.Pressure sensor output electrical signals, after A/D converter TLC0831 conversion, is sent into C8051F single-chip microcomputer.In addition, setting an adjustable resistance and a shift knob, the voltage signal of adjustable resistance is carried out, after A/D conversion, signal is sent into single-chip microcomputer equally, in the time of switch opens, regulate adjustable resistance to set it as the threshold value that BW is overweight, in the time that switch is closed, regulate adjustable resistance to set it as the excessive threshold value of knapsack pressure differential.When single-chip microcomputer receives after the signal of telecommunication of two braces, carry out respectively addition and subtraction, when addition absolute value is greater than the threshold value that knapsack is overweight, just make alarm 6 Chang Ming; If the absolute value after addition is less than or equal to the threshold value that knapsack is overweight, after subtraction, absolute value is greater than the threshold value that knapsack pressure differential is set simultaneously, just makes alarm 6 pipe one second, then stops one second, then pipe one second ... realize and intermittently piping.Meanwhile, solve gross weight by the relation between pressure and the voltage of sensor FSR402, the voltage signal that carries out the absolute value digital quantity after addition is converted to weight, show by charactron simultaneously.In addition, the utility model has also designed power switch button, can freely open or close the function of measuring weight.
Claims (2)
1. can measure the knapsack of weight for one kind, comprise knapsack, it is characterized in that, also comprise two pressure sensors, A/D modular converter, single-chip microcomputer, adjustable resistance, button, display and alarm, the pressure sensor that is contained in respectively the stressed position of shoulder of two braces of knapsack gathers pressure signal and is converted to the signal of telecommunication, and the signal of telecommunication becomes data signal through A/D modular converter and delivers to single-chip microcomputer; Signalization is delivered to single-chip microcomputer by adjustable resistance and button; To data after treatment, single-chip microcomputer send display to show weight data to single-chip microcomputer, and alarm signal is sent alarm simultaneously.
2. the knapsack that can measure according to claim 1 weight, is characterized in that, described two pressure sensors are selected the FSR402 of same model, and two pressure sensor output electrical signals, after A/D modular converter TLC0831 conversion, are sent into single-chip microcomputer C8051F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320714838.8U CN203608949U (en) | 2013-11-14 | 2013-11-14 | Backpack capable of measuring weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320714838.8U CN203608949U (en) | 2013-11-14 | 2013-11-14 | Backpack capable of measuring weight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203608949U true CN203608949U (en) | 2014-05-28 |
Family
ID=50761641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320714838.8U Expired - Fee Related CN203608949U (en) | 2013-11-14 | 2013-11-14 | Backpack capable of measuring weight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203608949U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054538A (en) * | 2015-08-03 | 2015-11-18 | 苏州京龙皮件服饰有限公司 | Travel suitcase with weighing function |
| CN105901895A (en) * | 2016-04-13 | 2016-08-31 | 浙江大学 | Self-adaption shoulder band backpack and method implementing same |
| WO2017166238A1 (en) * | 2016-03-31 | 2017-10-05 | 深圳市柔宇科技有限公司 | Knapsack and stress detection method |
| CN108577150A (en) * | 2018-06-27 | 2018-09-28 | 南京工业职业技术学院 | A kind of intelligence knapsack |
| CN109965494A (en) * | 2019-04-26 | 2019-07-05 | 广州市佰德利实业有限公司 | Intelligent gravity incudes connection buckle |
-
2013
- 2013-11-14 CN CN201320714838.8U patent/CN203608949U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054538A (en) * | 2015-08-03 | 2015-11-18 | 苏州京龙皮件服饰有限公司 | Travel suitcase with weighing function |
| WO2017166238A1 (en) * | 2016-03-31 | 2017-10-05 | 深圳市柔宇科技有限公司 | Knapsack and stress detection method |
| CN107438379A (en) * | 2016-03-31 | 2017-12-05 | 深圳市柔宇科技有限公司 | Knapsack and a kind of stress detection method |
| CN105901895A (en) * | 2016-04-13 | 2016-08-31 | 浙江大学 | Self-adaption shoulder band backpack and method implementing same |
| CN108577150A (en) * | 2018-06-27 | 2018-09-28 | 南京工业职业技术学院 | A kind of intelligence knapsack |
| CN109965494A (en) * | 2019-04-26 | 2019-07-05 | 广州市佰德利实业有限公司 | Intelligent gravity incudes connection buckle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20151114 |