CN105427547A - Over-moisture alarm - Google Patents
Over-moisture alarm Download PDFInfo
- Publication number
- CN105427547A CN105427547A CN201510977093.8A CN201510977093A CN105427547A CN 105427547 A CN105427547 A CN 105427547A CN 201510977093 A CN201510977093 A CN 201510977093A CN 105427547 A CN105427547 A CN 105427547A
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- Prior art keywords
- alarm
- comparer
- electrically connected
- resistance
- unit
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/20—Status alarms responsive to moisture
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention provides an over-moisture alarm which comprises a humidity information collection unit, a forward power supply unit, a comparator, a response unit and an alarm unit, wherein a forward power supply input end and a backward power supply input end of the comparator are respectively in an electric connection with the forward power supply unit and the humidity information collection unit; a control output end of the comparator is connected to the response unit; and the response unit is connected to the alarm unit. The over-moisture alarm provided by the invention has the beneficial effects that humidity changes can be monitored by the over-moisture alarm in real time; a sound-light alarm can be sent out timely in case of an excessive humidity; and the alarm has a simple structure and high efficiency.
Description
Technical field
The invention belongs to alarm device field, especially relate to one and cross wet alarm.
Background technology
The environment that many storerooms or reaction occur all needs drying, the existing much equipment for testing environment humidity only can show humidity by mechanical type, do not support real-time detection, and give the alarm when humidity is too high, and often can ignore the real-time change of humidity yet.
Summary of the invention
In view of this, the present invention is intended to propose a kind ofly cross wet alarm, can the change of monitoring humidity in real time, and sends sound and light alarm in time when humidity is too high, and structure is simple and effective.
For achieving the above object, technical scheme of the present invention is achieved in that
One crosses wet alarm, comprise humidity information collecting unit, forward power supply unit, comparer, reaction member and alarm unit, the forward energization input of described comparer and reverse energization input are electrically connected with described forward power supply unit and described humidity information collecting unit respectively, the control output end of described comparer is connected to described reaction member, and described reaction member is connected to described alarm unit.
Further, described humidity information collecting unit comprises the first resistance R1, the first electric capacity C1 and hygristor RB that connect successively, the input end of described first resistance R1 is electrically connected with input voltage ACC, the output terminal of described hygristor RB is connected to ground, and the reverse energization input of described comparer is connected with the input end of described hygristor RB.
Further, described forward power supply unit comprises and is serially connected in the second resistance R2 between described input voltage ACC and ground and the 3rd resistance R3 successively, and the forward energization input of described comparer is electrically connected between described second resistance R2 and described 3rd resistance R3.
Further, described reaction member comprises triode Q1, the base stage of described triode Q1 is electrically connected with the control output end of described comparer, and the emitter of described triode Q1 is connected to ground, and the collector of described triode Q1 is electrically connected with described input voltage ACC by series connection boost resistor R4.
Further, described alarm unit comprises transwitch SCR, hummer and light emitting diode D1, the control pole of described transwitch SCR is electrically connected with the collector of described triode Q1, the anode of described transwitch SCR and negative electrode respectively with described input voltage ACC and be electrically connected, between the negative electrode that described hummer and described light emitting diode D1 are connected on described transwitch SCR and ground.
Relative to prior art, the mistake of the present invention alarm that wets has following advantage:
When the present invention uses in a dry environment, the impedance of the hygristor RB of humidity information collecting unit is very large, according to voltage divider principle, the input terminal voltage of hygristor RB is larger, so the voltage of the reverse energization input of the comparer be electrically connected with the input end of hygristor RB is very large, the forward energization input of comparer is electrically connected between the second resistance R2 and the 3rd resistance R3, because now the reverse supply voltage of comparer is higher than forward supply voltage, comparer ends, no current outputs to reaction member from control output end, the control pole of the transwitch SCR of alarm unit is not from the current lead-through of reaction member, so hummer and light emitting diode D1 can not send sound and light alarm, when humidity is too high, the impedance of the hygristor RB of humidity information collecting unit diminishes gradually with the increase of humidity, the voltage of the reverse energization input of comparer is caused to reduce, when reverse supply voltage is less than forward supply voltage, comparer conducting, control output end output current is to the base stage of the triode Q1 of reaction member, On current is flow into the control pole of the transwitch SCR of alarm unit by the collector of triode Q1, transwitch SCR conducting, hummer sends buzzing, light emitting diode D1 sends light, help humidity in alarm environment too high, achieve the change of real-time monitoring humidity.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the circuit theory diagrams of the embodiment of the present invention.
Description of reference numerals:
1-humidity information collecting unit, 2-forward power supply unit, 3-comparer, 4-reaction member, 5-alarm unit.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the invention provides one and cross wet alarm, comprise humidity information collecting unit 1, forward power supply unit 2, comparer 3, reaction member 4 and alarm unit 5, the forward energization input of described comparer 3 and reverse energization input are electrically connected with described forward power supply unit 2 and described humidity information collecting unit 1 respectively, the control output end of described comparer 3 is connected to described reaction member 4, and described reaction member 4 is connected to described alarm unit 5.
Described humidity information collecting unit 1 comprises the first resistance R1, the first electric capacity C1 and hygristor RB that connect successively, the input end of described first resistance R1 is electrically connected with input voltage ACC, the output terminal of described hygristor RB is connected to ground, and the reverse energization input of described comparer 3 is connected with the input end of described hygristor RB.
Described forward power supply unit 2 comprises and is serially connected in the second resistance R2 between described input voltage ACC and ground and the 3rd resistance R3 successively, and the forward energization input of described comparer 3 is electrically connected between described second resistance R2 and described 3rd resistance R3.
Described reaction member 4 comprises triode Q1, the base stage of described triode Q1 is electrically connected with the control output end of described comparer 3, the emitter of described triode Q1 is connected to ground, and the collector of described triode Q1 is electrically connected with described input voltage ACC by series connection boost resistor R4.
Described alarm unit 5 comprises transwitch SCR, hummer and light emitting diode D1, the control pole of described transwitch SCR is electrically connected with the collector of described triode Q1, the anode of described transwitch SCR and negative electrode respectively with described input voltage ACC and be electrically connected, between the negative electrode that described hummer and described light emitting diode D1 are connected on described transwitch SCR and ground.
The course of work of this example: when the present invention uses in a dry environment, the impedance of the hygristor RB of humidity information collecting unit 1 is very large, according to voltage divider principle, the input terminal voltage of hygristor RB is larger, so the voltage of the reverse energization input of the comparer 3 be electrically connected with the input end of hygristor RB is very large, the forward energization input of comparer 3 is electrically connected between the second resistance R2 of forward power supply unit 2 and the 3rd resistance R3, because now the reverse supply voltage of comparer 3 is higher than forward supply voltage, comparer ends, no current outputs to reaction member 4 from control output end, the control pole of the transwitch SCR of alarm unit 5 is not from the current lead-through of reaction member 4, so hummer and light emitting diode D1 can not send sound and light alarm, when humidity is too high, the impedance of the hygristor RB of humidity information collecting unit 1 diminishes gradually with the increase of humidity, the voltage of the reverse energization input of comparer 3 is caused to reduce, when reverse supply voltage is less than forward supply voltage, comparer 3 conducting, control output end output current is to the base stage of the triode Q1 of reaction member 4, On current is flow into the control pole of the transwitch SCR of alarm unit 5 by the collector of triode Q1, transwitch SCR conducting, hummer sends buzzing, and light emitting diode D1 sends light.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a mistake wets alarm, it is characterized in that: comprise humidity information collecting unit, forward power supply unit, comparer, reaction member and alarm unit, the forward energization input of described comparer and reverse energization input are electrically connected with described forward power supply unit and described humidity information collecting unit respectively, the control output end of described comparer is connected to described reaction member, and described reaction member is connected to described alarm unit.
2. mistake according to claim 1 wets alarm, it is characterized in that: described humidity information collecting unit comprises the first resistance (R1), the first electric capacity (C1) and the hygristor (RB) of connecting successively, the input end of described first resistance (R1) is electrically connected with input voltage (ACC), the output terminal of described hygristor (RB) is connected to ground, and the reverse energization input of described comparer is connected with the input end of described hygristor (RB).
3. mistake according to claim 1 wets alarm, it is characterized in that: described forward power supply unit comprises and is serially connected in the second resistance (R2) between described input voltage (ACC) and ground and the 3rd resistance (R3) successively, and the forward energization input of described comparer is electrically connected between described second resistance (R2) and described 3rd resistance (R3).
4. mistake according to claim 1 wets alarm, it is characterized in that: described reaction member comprises triode (Q1), the base stage of described triode (Q1) is electrically connected with the control output end of described comparer, the emitter of described triode (Q1) is connected to ground, and the collector of described triode (Q1) is electrically connected with described input voltage (ACC) by series connection boost resistor (R4).
5. mistake according to claim 4 wets alarm, it is characterized in that: described alarm unit comprises transwitch (SCR), hummer and light emitting diode (D1), the control pole of described transwitch (SCR) is electrically connected with the collector of described triode (Q1), the anode of described transwitch (SCR) and negative electrode respectively with described input voltage (ACC) and be electrically connected, between the negative electrode that described hummer and described light emitting diode (D1) are connected on described transwitch (SCR) and ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977093.8A CN105427547A (en) | 2015-12-21 | 2015-12-21 | Over-moisture alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977093.8A CN105427547A (en) | 2015-12-21 | 2015-12-21 | Over-moisture alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105427547A true CN105427547A (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510977093.8A Pending CN105427547A (en) | 2015-12-21 | 2015-12-21 | Over-moisture alarm |
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| CN (1) | CN105427547A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107027597A (en) * | 2017-04-05 | 2017-08-11 | 宁波大叶园林科技有限公司 | Retrofit intelligent soil moisture alarm |
| CN107041283A (en) * | 2017-04-05 | 2017-08-15 | 宁波大叶园林工业有限公司 | Intelligent soil moisture alarm |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998012580A1 (en) * | 1996-09-18 | 1998-03-26 | California Institute Of Technology | Fast, high sensitivity dewpoint hygrometer |
| CN101988934A (en) * | 2009-07-30 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Undervoltage detection and alarm circuit |
| CN202598766U (en) * | 2012-06-06 | 2012-12-12 | 陈彧 | Household automatic air humidity regulating device |
| CN204178521U (en) * | 2014-11-19 | 2015-02-25 | 陈列 | Bed-wetting pick-up unit |
| CN204206585U (en) * | 2014-10-15 | 2015-03-11 | 昆明理工大学 | A kind of batch (-type) electric light break-make testing circuit |
| CN104680731A (en) * | 2013-12-03 | 2015-06-03 | 四川兴科蓉药业有限责任公司 | Low-cost humidity detector circuit for pharmaceutical production |
| CN204824884U (en) * | 2015-07-17 | 2015-12-02 | 杭州秀川科技有限公司 | Biochemical incubator dehumidifies |
-
2015
- 2015-12-21 CN CN201510977093.8A patent/CN105427547A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998012580A1 (en) * | 1996-09-18 | 1998-03-26 | California Institute Of Technology | Fast, high sensitivity dewpoint hygrometer |
| CN101988934A (en) * | 2009-07-30 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Undervoltage detection and alarm circuit |
| CN202598766U (en) * | 2012-06-06 | 2012-12-12 | 陈彧 | Household automatic air humidity regulating device |
| CN104680731A (en) * | 2013-12-03 | 2015-06-03 | 四川兴科蓉药业有限责任公司 | Low-cost humidity detector circuit for pharmaceutical production |
| CN204206585U (en) * | 2014-10-15 | 2015-03-11 | 昆明理工大学 | A kind of batch (-type) electric light break-make testing circuit |
| CN204178521U (en) * | 2014-11-19 | 2015-02-25 | 陈列 | Bed-wetting pick-up unit |
| CN204824884U (en) * | 2015-07-17 | 2015-12-02 | 杭州秀川科技有限公司 | Biochemical incubator dehumidifies |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107027597A (en) * | 2017-04-05 | 2017-08-11 | 宁波大叶园林科技有限公司 | Retrofit intelligent soil moisture alarm |
| CN107041283A (en) * | 2017-04-05 | 2017-08-15 | 宁波大叶园林工业有限公司 | Intelligent soil moisture alarm |
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Application publication date: 20160323 |