CN2145598Y - Wet indicator having sound varying and light changing function - Google Patents
Wet indicator having sound varying and light changing function Download PDFInfo
- Publication number
- CN2145598Y CN2145598Y CN 92236349 CN92236349U CN2145598Y CN 2145598 Y CN2145598 Y CN 2145598Y CN 92236349 CN92236349 CN 92236349 CN 92236349 U CN92236349 U CN 92236349U CN 2145598 Y CN2145598 Y CN 2145598Y
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- CN
- China
- Prior art keywords
- integrated circuit
- light emitting
- emitting diode
- humidity sensor
- battery
- Prior art date
- 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
The utility model relates to a temperature displaying device which is used for monitoring bed-wetting for infants or children, or people who is not capable of self-care in life, comprising a humidity sensor, a music integrated circuit chip, a transistor, a light emitting diode, an electromagnetic buzzer and a lithium-manganese cell of three volts. Firstly, one end of the humidity sensor is connected with the music integrated circuit chip; the other end of the humidity sensor is connected with the anode of a battery and one end of a series circuit of the buzzer and the light emitting diode. The cathode of the battery is connected with the other end of the music integrated circuit chip; two output terminals of the integrated circuit chip are connected with the base and the emitter of the transistor; a collector is connected with the other end of the series circuit of the buzzer and the light emitting diode.
Description
This utility model is applicable to that baby, child and the patient that can not take care of oneself in life do the monitoring of the wet bed of urine, also can use as toy for children.
Existing urine-wet alarm device after wetting the bed, just sends the sound or have light to show and can report to the police, but the size of the brightness of light and sound is indeclinable, can't judge moist degree, and the structure that has is all complicated, and cost is also high.
The purpose of this utility model is to have provided a kind of hygrostat by sounding and luminous strong and weak variation, reflects the moist degree of monitoring point intuitively, and reach simple in structure that cost is minimum.
Form power circuit with dog days' lithium-manganese cell and hygrometric pick off for this purpose, a music integrated circuit is made signal source, and transistor is done and promoted grade, and with electromagnetic buzzer and light emitting diode make a sound, optical display unit.Wherein, the hygrometric pick off will adopt the two ends resistance value because urine immerses the type sensor that can change, and during no urine, two ends resistance infinity is equivalent to open a way; Have urine to immerse, the resistance at two ends diminishes and reaches path, and itself has played the effect of on and off switch.At first, with a termination music integrated circuit sheet of humidity sensor, and link to each other with the positive pole of a battery also end of the circuit of connecting with news Chinese percussion instrument, light emitting diode of the other end joins.The negative pole of battery then is connected with the other end of music integrated chip, and the output two ends of integrated circuit chip are connected with base stage, the emitter stage of audion, and colelctor electrode is then received the other end of the news Chinese percussion instrument circuit of connecting with light emitting diode.
The action principle of this circuit is: when the monitoring point was dry, humidity sensor two ends resistance value was infinitely great, equals to open circuit, and circuit is in off state, and no current flows through in the circuit.When urine immerses humidity sensor, its two ends resistance is diminished along with the increase of immersing urine, power on circuitry, battery by pick off to circuit supply, music integrated circuit sheet work this moment, the outputting music signal, this signal voltage makes audion work as the base stage positive bias of audion, thereby promotes electromagnetic buzzer sounding and the lumination of light emitting diode as the transistor collector load that are cascaded.If the moist degree height of monitoring point, the resistance value of humidity sensor output is just little, and battery voltage value is certain, and then the current value in the circuit is just big, and the sound that the news Chinese percussion instrument sends is just big, and the light that light emitting diode sends is just strong.
By accompanying drawing, specify the technical pattern characteristics of embodiment now: accompanying drawing is a hygrostat electricity schematic circuit.
Humidity sensor (1) adopts the printed board of two " mountain " the shape patterns of etching, one end is connected with the positive pole of dog days' button type lithium-manganese battery (3), the other end then is connected with an end of music integrated circuit sheet (2), integrated (2) adopt VT01A, its output voltage is as the positive bias of audion (4) S9018 base stage, a light emitting diode (5) φ 3LED and electromagnetic buzzer OMBO1(6) connect after, collector load as audion (4), the colelctor electrode of one termination audion (4), another termination anode.
Claims (3)
1, a kind of change of voice change light wet indicator that is used to monitor the wet bed of urine, it is characterized in that: it is made up of humidity sensor (1), music integrated circuit sheet (2), audion (4), light emitting diode (5), electromagnetic buzzer (6), lithium-manganese cell (3).Humidity sensor (1) two ends line elongates separately, and is electrically connected with wiring board that other components and parts are formed.
2, by the described wet indicator of claim 1, it is characterized in that:
One termination music integrated circuit sheet (2) of humidity sensor (1), and the other end links to each other with the positive pole of battery (3), also the end with news Chinese percussion instrument (6), the placed in-line circuit of light emitting diode (5) joins.The negative pole of battery (3) then is connected with the other end of music integrated circuit sheet (2), and the output two ends of integrated circuit chip (2) are connected with base stage, the emitter stage of audion (4); Colelctor electrode is then received on the other end of news Chinese percussion instruments (6) and the placed in-line circuit of light emitting diode (5).
3, by the described wet indicator of claim 1, it is characterized in that: humidity sensor (1) has the printed board of two " mountain " shape patterns for etching, it is φ 3LED that audion (4) adopts S9018, light emitting diode (5), electromagnetic buzzer (6) OMBO1, battery adopt dog days CR2032 button type lithium-manganese battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92236349 CN2145598Y (en) | 1992-10-08 | 1992-10-08 | Wet indicator having sound varying and light changing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92236349 CN2145598Y (en) | 1992-10-08 | 1992-10-08 | Wet indicator having sound varying and light changing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2145598Y true CN2145598Y (en) | 1993-11-10 |
Family
ID=33777914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92236349 Expired - Fee Related CN2145598Y (en) | 1992-10-08 | 1992-10-08 | Wet indicator having sound varying and light changing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2145598Y (en) |
-
1992
- 1992-10-08 CN CN 92236349 patent/CN2145598Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |