CN207883088U - A kind of induction alarm device on bench for chemistry experiment - Google Patents
A kind of induction alarm device on bench for chemistry experiment Download PDFInfo
- Publication number
- CN207883088U CN207883088U CN201721547196.1U CN201721547196U CN207883088U CN 207883088 U CN207883088 U CN 207883088U CN 201721547196 U CN201721547196 U CN 201721547196U CN 207883088 U CN207883088 U CN 207883088U
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- CN
- China
- Prior art keywords
- annular groove
- door
- operational amplifier
- utility
- high level
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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.)
- Expired - Fee Related
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Abstract
A kind of induction alarm device on bench for chemistry experiment of the utility model belongs to experiment equipment technical field；Including the annular groove that section is " recessed " shape, the fluorescent tube being arranged in annular groove, the lampshade of multiple proximity sensors and cover buckle at the top of annular groove being uniformly arranged on inside annular groove；Further include or door, operational amplifier, electromagnetic relay, power supply, current-limiting resistance, light emitting diode and buzzer；Under the utility model structure and circuit, as long as operator is close to any one proximity sensor, so that it may to alarm, not only act as suggesting effect, and multiple proximity sensors realize multiple position Simultaneous Monitorings；Since design is provided with fluorescent tube in annular groove, is capable of providing annular shadowless lamp, not only acts as illuminating effect, and after avoiding utility model device use, caused by illumination unevenness problem；Due to being designed with light emitting diode and buzzer simultaneously, the two synchronizes alarm, and warning function is more obvious.
Description
Technical field
A kind of induction alarm device on bench for chemistry experiment of the utility model belongs to experiment equipment technical field.
Background technology
Chemical experiment is with certain danger, it should alarm the danger being likely to occur, it is ensured that the peace of operator
Entirely.Some degrees of danger with arrive danger source distance dependent, therefore should be provided on bench for chemistry experiment and be capable of detection range
Warning device.However, it has not been found that such product.
Utility model content
Technical need for bench for chemistry experiment to operator apart from danger source distance monitoring, the utility model discloses one
Kind can send out alarm when operator is closer apart from danger source, have for the induction alarm device on bench for chemistry experiment
The safety of effect protection chemical operation person.
What the purpose of this utility model was realized in：
A kind of induction alarm device on bench for chemistry experiment, including section are the annular groove of " recessed " shape, are arranged in ring
Fluorescent tube in shape slot, the lampshade of multiple proximity sensors and cover buckle at the top of annular groove being uniformly arranged on inside annular groove；Institute
The bottom and side wall for stating annular groove is both provided with reflector, and the proximity sensor connects or the output of the input terminal or door of door
The noninverting input of end connection operational amplifier, the reverse input end of the operational amplifier connect reference voltage source, and operation is put
The output end of big device connects electromagnetic relay input circuit, and the output loop setting of the electromagnetic relay is in power supply, current limliting electricity
In the alarm circuit of resistance, light emitting diode and buzzer composition；
Operation principle is：In multiple proximity sensors, as long as testee is visited close to any one proximity sensor
From in threshold range, which, which will export high level or door, can also export high level for ranging, or the high electricity of door output
When putting down higher than reference voltage source voltage, operational amplifier exports high level, and triggering electromagnetic relay is closed, and light emitting diode is sent out
Light, buzzer send out buzzing.
Advantageous effect：
The first, under the utility model structure and circuit, as long as operator is close to any one proximity sensor, so that it may with
It alarms, not only acts as suggesting effect, and multiple proximity sensors realize multiple position Simultaneous Monitorings；
The second, since design is provided with fluorescent tube in annular groove, it is capable of providing annular shadowless lamp, not only acts as illumination
Effect, and after avoiding utility model device use, caused by illumination unevenness problem；
Third, due to being designed with light emitting diode and buzzer simultaneously, the two synchronizes alarm, and warning function is brighter
It is aobvious.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram for the induction alarm device on bench for chemistry experiment of the utility model.
Fig. 2 is the directions A-A sectional view in Fig. 1.
Fig. 3 is a kind of circuit diagram for the induction alarm device on bench for chemistry experiment of the utility model.
In figure：1 annular groove, 2 fluorescent tubes, 3 proximity sensors, 4 lampshades.
Specific implementation mode
The utility model specific embodiment is described in further detail below in conjunction with the accompanying drawings.
A kind of induction alarm device on bench for chemistry experiment of the present embodiment, structural schematic diagram are as depicted in figs. 1 and 2
(do not include lampshade 4 in Fig. 1, and Fig. 2 includes lampshade 4, and from figure 2 it can be seen that lampshade 4 is provided with through-hole, makes it
Do not block proximity sensor 3), which includes the annular groove 1 that section is " recessed " shape, is arranged in annular groove 1
The lampshade 4 of fluorescent tube 2, the multiple proximity sensors 3 being uniformly arranged on inside annular groove 1 and cover buckle at 1 top of annular groove；The ring
The bottom and side wall of shape slot 1 is both provided with reflector, the connection of the proximity sensor 3 or the input terminal of door or the output end of door
The noninverting input of operational amplifier is connected, the reverse input end of the operational amplifier connects reference voltage source, operation amplifier
The output end of device connects electromagnetic relay input circuit, the output loop setting of the electromagnetic relay power supply, current-limiting resistance,
In the alarm circuit of light emitting diode and buzzer composition；
A kind of circuit diagram for the induction alarm device on bench for chemistry experiment of the utility model is as shown in figure 3, its work
Principle is：In multiple proximity sensors 3, as long as testee is close to any one 3 detection range threshold value of proximity sensor
In range, which, which will export high level or door, can also export high level, or door output high level higher than ginseng
When examining voltage source voltage, operational amplifier exports high level, and triggering electromagnetic relay is closed, lumination of light emitting diode, buzzer
Send out buzzing.
The preferable specific implementation mode of the above, only the utility model, these specific implementation modes are all based on this
Different realization methods under utility model general idea, and the scope of protection of the utility model is not limited thereto, it is any ripe
Know those skilled in the art within the technical scope disclosed by the utility model, the change or replacement that can be readily occurred in, all
It should cover and be within the protection scope of the utility model.Therefore, the scope of protection of the utility model should be with claims
Subject to protection domain.
Claims (1)
1. a kind of induction alarm device on bench for chemistry experiment, which is characterized in that including the annular groove that section is " recessed " shape
（1）, it is arranged in annular groove（1）Interior fluorescent tube（2）, it is uniformly arranged on annular groove（1）Internal multiple proximity sensors（3）And lid
It is buckled in annular groove（1）The lampshade at top（4）；The annular groove（1）Bottom and side wall be both provided with reflector, it is described close to passing
Sensor（3）The noninverting input of the output end connection operational amplifier of the input terminal or door of connection or door, the operational amplifier
Reverse input end connect reference voltage source, the output end of operational amplifier connects electromagnetic relay input circuit, the electromagnetism
The output loop of relay is arranged in the alarm circuit that power supply, current-limiting resistance, light emitting diode and buzzer form；
Operation principle is：In multiple proximity sensors（3）In, as long as testee is close to any one proximity sensor（3）
In detection range threshold range, the proximity sensor（3）High level or door, which will be exported, can also export high level, or door it is defeated
When going out high level higher than reference voltage source voltage, operational amplifier exports high level, and triggering electromagnetic relay is closed, light-emitting diodes
Pipe shines, and buzzer sends out buzzing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721547196.1U CN207883088U (en) | 2017-11-20 | 2017-11-20 | A kind of induction alarm device on bench for chemistry experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721547196.1U CN207883088U (en) | 2017-11-20 | 2017-11-20 | A kind of induction alarm device on bench for chemistry experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207883088U true CN207883088U (en) | 2018-09-18 |
Family
ID=63500901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721547196.1U Expired - Fee Related CN207883088U (en) | 2017-11-20 | 2017-11-20 | A kind of induction alarm device on bench for chemistry experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207883088U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192423A (en) * | 2019-12-16 | 2020-05-22 | 珠海格力电器股份有限公司 | Nursing method, nursing device, electronic device and storage medium |
-
2017
- 2017-11-20 CN CN201721547196.1U patent/CN207883088U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192423A (en) * | 2019-12-16 | 2020-05-22 | 珠海格力电器股份有限公司 | Nursing method, nursing device, electronic device and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180918 Termination date: 20191120 |