CN102353364A - Compass for blind person - Google Patents
Compass for blind person Download PDFInfo
- Publication number
- CN102353364A CN102353364A CN2011101786592A CN201110178659A CN102353364A CN 102353364 A CN102353364 A CN 102353364A CN 2011101786592 A CN2011101786592 A CN 2011101786592A CN 201110178659 A CN201110178659 A CN 201110178659A CN 102353364 A CN102353364 A CN 102353364A
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- Prior art keywords
- housing
- magnetic induction
- north
- switch
- compass
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a compass for a blind person. The compass comprises a housing, a guiding disc installed on the housing and a pointer pivoted to the housing; the guiding disc is provided with marks of four directions, i.e., east, west, south and north, and every two adjacent marks form an angle of 90 degrees; the pointer has a north-seeking end and a south-seeking end; the compass further comprises a magnetic induction switch, a buzzer, a power switch and a power supply, the power supply comprises a battery case and dry batteries filled in the battery case, the battery case is arranged in the housing, the magnetic induction switch, the buzzer and the power switch are installed on the housing, the magnetic induction switch is located below the mark of north on the guiding disc, and the buzzer and the power switch are located at two sides of the guiding disc; the magnetic induction switch, the buzzer, the power switch and leads for the power supply are cascaded to form an alarm circuit. The beneficial effect of the invention is as follows: the compass indicates a direction through sounding of the buzzer, which is more convenient for blind people to distinguish south from north.
Description
Technical field:
The present invention relates to a kind of compass, especially a kind of blind person uses compass.
Background technology:
The compass of selling on the market at present needs the user with watching the mode of pointer to distinguish north and south, and this kind compass is not suitable for blind person colony and uses.
Summary of the invention:
In order to overcome the deficiency of above-mentioned prior art, the object of the invention is to provide a kind of blind person to use compass, takes one's bearings when making things convenient for blind person colony to go out.
In order to realize the foregoing invention purpose, the technical scheme that the present invention adopted is:
A kind of blind person uses compass; Comprise a housing and be installed in the guide dish on the housing and be hubbed at the pointer on the said housing; Said guide dish is marked with the sign that is mutually 90 ° of four corners of the world four directions, and said pointer has one and refers to the North and south seeking pole, it is characterized in that; Also comprise a magnetic induction switch, hummer, power switch, power supply; Said power supply comprises a battery case and the dry cell that is seated in the said battery case, and said battery case is arranged in the said housing, and said magnetic induction switch, hummer, power switch are installed on the described housing; And said magnetic induction switch is positioned at the below that indicates northern mark of said guide dish, and said hummer and power switch are positioned at the both sides of said guide dish; Said magnetic induction switch, hummer, power switch, power supply constitute a warning circuit with the lead series connection.
Principle of work of the present invention is: during use, hand is taken compass to keep flat to the front and is turned on the power switch, and slowly rotates health then; When health during towards the north; The finger the North needle point of pointer forwards the mark in north on the guide dish to, and at this moment the finger the North of pointer causes the magnetic induction switch conducting near magnetic induction switch; The hummer energising is sounded a buzzer, and reminds the blind person to be in the direction towards north.Because the south seeking pole of pointer is short, it can not touch magnetic induction switch, so when health during towards south, when the south seeking pole needle point of pointer forwarded mark northern on the guide dish to, magnetic induction switch can not connected, hummer can not reported to the police, and causes judging by accident.
The invention has the beneficial effects as follows: come direction indication through the hummer sounding, better make things convenient for blind person colony to distinguish north and south.
Description of drawings:
Below in conjunction with accompanying drawing and specific embodiment the present invention is further described.
Fig. 1 is a structural drawing of the present invention
Fig. 2 is the electrical schematic diagram of warning circuit of the present invention.
Embodiment:
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete accompanying drawing and embodiment, further set forth the present invention.
Referring to Fig. 1 and Fig. 2; A kind of blind person shown in the figure uses compass; Comprise a housing 100; One guide dish 110 is installed on housing 100, and guide dish 110 is marked with the sign 111,112,113,114 that is mutually 90 ° of East, West, South, North four directions, is pivoted with a pointer 130 at the center of guide dish 110 through axle 120.
This blind person also comprises the warning circuit that is made up of magnetic induction switch 210, hummer 220, power switch 230, power supply 240 with compass; Power supply 240 comprises a battery case and the dry cell E that is seated in the battery case; Battery case is arranged on the bottom surface of housing 100; Magnetic induction switch 210, hummer 220, power switch 230 are installed in the housing 100; And magnetic induction switch 210 is positioned at the below of the northern mark 114 of indicating of guide dish 110, and hummer 220 and power switch 230 are positioned at the both sides of guide dish 110.
The present invention shortens and widens south seeking pole with the finger the North lengthening of pointer 130, is intended to make pointer 130 still to keep the balance on the surface level through axle 120; During use, hand is taken compass to keep flat to the front and is turned on the power switch 230, slowly rotates health then; When health during towards the north; The finger the North needle point of pointer 130 forwards mark 114 places in north on the guide dish 110 to, and at this moment the finger the North of pointer 130 causes magnetic induction switch 210 conductings near magnetic induction switch 210; Hummer 220 energisings are sounded a buzzer, and remind the blind person to be in the direction towards north.Because the south seeking pole of pointer 130 is short, it can not touch magnetic induction switch 210, so when health during towards south; When the finger the North needle point of pointer 130 forwards mark 114 places in north on the guide dish to; Magnetic induction switch 210 can not connected, and hummer 220 can not reported to the police, and causes erroneous judgement.
Claims (1)
1. a blind person uses compass; Comprise a housing and be installed in the guide dish on the housing and be hubbed at the pointer on the said housing; Said guide dish is marked with the sign that is mutually 90 ° of four corners of the world four directions, and said pointer has one and refers to the North and south seeking pole, it is characterized in that; Also comprise a magnetic induction switch, hummer, power switch, power supply; Said power supply comprises a battery case and the dry cell that is seated in the said battery case, and said battery case is arranged in the said housing, and said magnetic induction switch, hummer, power switch are installed on the described housing; And said magnetic induction switch is positioned at the below that indicates northern mark of said guide dish, and said hummer and power switch are positioned at the both sides of said guide dish; Said magnetic induction switch, hummer, power switch, power supply constitute a warning circuit with the lead series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101786592A CN102353364A (en) | 2011-06-29 | 2011-06-29 | Compass for blind person |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101786592A CN102353364A (en) | 2011-06-29 | 2011-06-29 | Compass for blind person |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102353364A true CN102353364A (en) | 2012-02-15 |
Family
ID=45576984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101786592A Pending CN102353364A (en) | 2011-06-29 | 2011-06-29 | Compass for blind person |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102353364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008487A (en) * | 2021-03-22 | 2021-06-22 | 何阳 | Water heating airtightness detection system for building engineering and detection method thereof |
-
2011
- 2011-06-29 CN CN2011101786592A patent/CN102353364A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008487A (en) * | 2021-03-22 | 2021-06-22 | 何阳 | Water heating airtightness detection system for building engineering and detection method thereof |
| CN113008487B (en) * | 2021-03-22 | 2023-12-08 | 新疆远航市政安装工程有限公司 | Water heating airtight detection system and detection method for constructional engineering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120215 |