CN210836499U - Special fixed alarm of granary - Google Patents
Special fixed alarm of granary Download PDFInfo
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- CN210836499U CN210836499U CN201922396273.3U CN201922396273U CN210836499U CN 210836499 U CN210836499 U CN 210836499U CN 201922396273 U CN201922396273 U CN 201922396273U CN 210836499 U CN210836499 U CN 210836499U
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- granary
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- operational amplifier
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Abstract
The utility model relates to a granary monitoring technology field aims at providing a special fixed alarm in granary, it is including the body that is located the granary, be provided with temperature sensor and humidity transducer on the body, temperature sensor's output electric connection has the first signal amplification unit that is used for enlargiing temperature sensor output signal, humidity transducer's output electric connection has the second signal amplification unit that is used for enlargiing humidity transducer output signal, the equal electric connection of output of first signal amplification unit and second signal amplification unit has same the control unit, the output electric connection of the control unit has bee calling organ, bee calling organ's input electric connection has the switch spare that is used for controlling the disconnection of circular telegram return circuit or switches on. The utility model discloses have the effect that sensitivity to the detection of moisture content or thermal molecule improves.
Description
Technical Field
The utility model belongs to the technical field of the granary monitoring technology and specifically relates to a special fixed alarm of granary is related to.
Background
At present, the granary is a special building for storing grains, and generally has the performance requirements of moisture resistance, heat insulation, ventilation, insect prevention, rat and bird prevention, good air tightness, fire prevention, convenience for mechanical operation, benefit for bulk grain storage and firmness and earthquake resistance. And the grain has a respiration function, so that the internal environment of the granary is in a constantly changing process, and the internal environment of the granary needs to be monitored so as to maintain the inside of the granary in an optimal state.
The existing fixed alarm instrument is generally fixedly installed at a certain height position inside a granary, and monitors the humidity and the temperature of the internal environment of the granary in real time, so that the alarm instrument can give an alarm when the humidity or the temperature of the internal environment of the granary exceeds a preset value, and can remind a worker to take measures in time.
The above prior art solutions have the following drawbacks: fixed alarm instrument fixed mounting is in the inside certain high position of granary, and when humidity or temperature exceeded the default and moisture content or heat molecule did not spread completely to the effective detection area of alarm instrument, the alarm instrument can't be triggered, unable warning, and the detection effect of alarm instrument is relatively poor, is difficult to in time remind the staff to take measures.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a special fixed alarm instrument of granary, its sensitivity to moisture content or heat molecule's detectivity improves, has improved the detection effect of fixed alarm instrument, is favorable to in time reminding the staff to take measures.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a special fixed alarm instrument in granary, is including being located the body in the granary, this internal temperature sensor and humidity transducer of being provided with, temperature sensor's output electric connection has the first signal amplification unit that is used for enlargiing temperature sensor output signal, humidity transducer's output electric connection has the second signal amplification unit that is used for enlargiing humidity sensor output signal, first signal amplification unit with the equal electric connection of output of second signal amplification unit has same the control unit, the output electric connection of the control unit has the alarm module who is used for warning the staff, alarm module's input electric connection has the switch spare that is used for controlling the disconnection of circular telegram or switches on.
By adopting the technical scheme, the temperature sensor and the humidity sensor which are positioned in the granary detect the humidity and the temperature in the granary, and when the humidity or the temperature in the granary exceeds a preset value, the control unit controls the alarm module to start through the switch piece to warn a worker; the output signal of the temperature sensor is amplified and input into the control unit through the first signal amplification unit, and the output signal of the humidity sensor is amplified and input into the control unit through the second signal amplification unit, so that the sensitivity of the control unit to the temperature signal or the humidity signal is improved, namely when the humidity or the temperature exceeds a preset value and the moisture or the thermal molecules are not completely diffused to an effective detection area of the alarm instrument, the alarm instrument can be triggered to alarm; and then the special fixed alarm for the granary has improved detection sensitivity to moisture or thermal molecules, improves the detection effect of the fixed alarm and is beneficial to reminding workers to take measures in time.
The present invention may be further configured in a preferred embodiment as: the first signal amplification unit comprises an operational amplifier U1, the output end of the temperature sensor is connected with the forward input end of an operational amplifier U1 through a resistor R2, the reverse input end of the operational amplifier U1 is grounded through a resistor R3, a resistor R4 is connected between the forward input end and the output end of the operational amplifier U1, and the output end of the operational amplifier U1 is electrically connected with the input end of the control unit.
By adopting the technical scheme, the operational amplifier U1 amplifies the signal output by the temperature sensor, so that a weak temperature signal is amplified and then input into the control unit, and the sensitivity of the control unit to the temperature signal is improved.
The present invention may be further configured in a preferred embodiment as: the resistor R4 is connected in series with a potentiometer Rp 1.
By adopting the technical scheme, the resistance value of the potentiometer Rp1 can be adjusted to adjust the amplification coefficient of the operational amplifier U1, so that the sensitivity of the control unit to temperature signals is controllable, the device is suitable for different precision requirements, and the applicability is strong.
The present invention may be further configured in a preferred embodiment as: the second signal amplification unit comprises an operational amplifier U2, the output end of the humidity sensor is connected with the positive input end of an operational amplifier U2 through a resistor R7, the reverse input end of the operational amplifier U2 is grounded through a resistor R8, a resistor R9 is connected between the positive input end and the output end of the operational amplifier U2, and the output end of the operational amplifier U2 is electrically connected with the input end of the control unit.
By adopting the technical scheme, the operational amplifier U2 amplifies the signal output by the humidity sensor, so that the weak humidity signal is amplified and then input into the control unit, and the sensitivity of the control unit to the humidity signal is improved.
The present invention may be further configured in a preferred embodiment as: the resistor R9 is connected in series with a potentiometer Rp 2.
By adopting the technical scheme, the resistance value of the potentiometer Rp2 can be adjusted to adjust the amplification coefficient of the operational amplifier U2, so that the sensitivity of the control unit to the humidity signal is controllable, the device is suitable for different precision requirements, and the applicability is strong.
The present invention may be further configured in a preferred embodiment as: the switch part includes relay KT1 and triode VT1, relay KT 1's time delay disconnection normally open contact KT1-1 connect in the circular telegram return circuit at alarm module place, an output of the control unit through resistance R5 with triode VT 1's base is connected, triode VT 1's collecting electrode warp the relay KT1 connecting power VCC.
Through adopting above-mentioned technical scheme, triode VT1 control relay KT1 work, after relay KT1 circular telegram actuation, the circular telegram return circuit at intercommunication buzzer place to carry out switch-on control to alarm module, simultaneously, avoided the output of control unit not enough to drive the problem of alarm module work.
The present invention may be further configured in a preferred embodiment as: one input end of the control unit is connected with a voltage stabilizing circuit, the input end of the voltage stabilizing circuit is connected with a mains supply, and one output end of the control unit is grounded.
By adopting the technical scheme, the control unit is connected with the mains supply through the voltage stabilizing circuit, so that the mains supply provides electric energy for the control unit, and meanwhile, the situation that the control unit is burnt out due to voltage fluctuation of the mains supply is reduced.
The present invention may be further configured in a preferred embodiment as: the model of the control unit is a singlechip MCS-51.
By adopting the technical scheme, the singlechip MCS-51 is used for receiving the output signals of the temperature sensor and the humidity sensor and controlling the buzzer, and the buzzer is simple in design, low in cost, strong in control function, high in integration level, small in size, good in reliability and low in power consumption.
To sum up, the utility model discloses a following at least one useful technological effect:
the sensitivity of the special fixed alarm for the granary to temperature signals or humidity signals is improved, and when the preset value is exceeded and moisture or thermal molecules are not completely diffused to an effective detection area of the alarm, the alarm can be triggered to alarm, so that the detection effect of the fixed alarm is improved, and workers can be reminded to take measures in time;
the resistance value of the potentiometer Rp1 is adjustable, so that the sensitivity of the control unit to temperature signals is controllable, the potentiometer is suitable for different precision requirements, and the applicability is strong;
the resistance value of the potentiometer Rp2 can be adjusted, so that the sensitivity of the control unit to humidity signals can be controlled, the device is suitable for different precision requirements, and the applicability is strong;
the on-off of the alarm module is controlled by the triode VT1 and the relay KT1, so that the problem that the output power of the control unit is not enough to drive the alarm module to work is avoided;
the control unit is connected with the mains supply through the voltage stabilizing circuit, so that the situation that the control unit is burnt out due to voltage fluctuation of the mains supply is reduced.
Drawings
Fig. 1 is a schematic diagram of a circuit connection relation of a special fixed alarm for a granary.
In the figure, 1, a temperature sensor; 2. a humidity sensor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a special fixed alarm of granary, including body (not shown in the figure) of fixed mounting on the granary inside wall, body and the backstage (not shown in the figure) electric connection that is located the monitor, the inside temperature sensor 1 and the humidity transducer 2 of being provided with of body, temperature sensor 1's model is SD1200B-160, and humidity transducer 2's model is HM 1500.
The output electric connection of temperature sensor 1 has the first signal amplification unit that is used for enlargiing temperature sensor 1 output signal, the output electric connection of humidity sensor 2 has the second signal amplification unit that is used for enlargiing 2 output signal of humidity sensor, the equal electric connection of output of first signal amplification unit and second signal amplification unit has the control unit, the output electric connection of control unit has the alarm module who is used for warning staff, alarm module's input electric connection has the switch spare that is used for controlling the circular circuit disconnection of circular telegram or switches on, the input of switch spare and the output electric connection of control unit. The model of the control unit is a singlechip MCS-51.
The first signal amplification unit comprises an operational amplifier U1, a resistor R1, a resistor R2, a resistor R3, a resistor R4 and a resistor Rp1, a power supply end of the temperature sensor 1 is connected with a power supply VCC, an output end of the temperature sensor 1 is connected with a forward input end of the operational amplifier U1 through a resistor R2, an output end of the temperature sensor 1 is grounded through a resistor R1, a reverse input end of the operational amplifier U1 is grounded through a resistor R3, a resistor R4 and a potentiometer Rp are connected between the forward input end and the output end of the operational amplifier U1, the resistor R4 is connected with the potentiometer Rp1 in series, and the resistance of the potentiometer Rp1 is adjustable and used for adjusting the amplification coefficient of the operational amplifier U1, so that the sensitivity of the control unit to temperature signals is controllable, the first signal amplification unit is suitable for different precision requirements and high in applicability, and the output end of the operational amplifier U1 is electrically connected with.
The second signal amplification unit comprises an operational amplifier U2, a resistor R6, a resistor R7, a resistor R8, a resistor R9 and a resistor Rp2, a power supply end of the humidity sensor 2 is connected with a power supply VCC, an output end of the humidity sensor 2 is connected with a forward input end of the operational amplifier U2 through a resistor R7, an output end of the humidity sensor 2 is grounded through a resistor R6, a reverse input end of the operational amplifier U2 is grounded through a resistor R8, a resistor R9 and a potentiometer Rp2 are connected between the forward input end and the output end of the operational amplifier U2, the resistor R9 is connected with the potentiometer Rp2 in series, and the resistance of the potentiometer Rp9 is adjustable and used for adjusting the amplification coefficient of the operational amplifier U2, so that the sensitivity of the control unit to humidity signals is controllable, the second signal amplification unit is suitable for different precision requirements and high in applicability, and the output end of the operational amplifier U2 is electrically connected with.
The P3.6 pin of the singlechip MCS-51 is connected with the switch.
The switch part comprises a relay KT1 and a triode VT1, the triode VT1 is NPN type, a P3.6 pin of the singlechip MCS-51 is connected with a base electrode of the triode VT1 through a resistor R5, an emitting electrode of the triode VT1 is grounded, a collecting electrode of the triode VT1 is connected with a power supply VCC through the relay KT1, two ends of the relay KT1 are connected with a diode D1 in parallel, the diode D1 is a freewheeling diode to play a protection role on the relay KT1 and avoid the relay KT1 from being burnt out, and a time-delay disconnection normally-open contact KT1-1 of the relay KT1 is connected in an electrifying loop where the alarm module is located.
The alarm module comprises a light emitting diode LED1 and a buzzer S, one end of a time-delay disconnection normally-open contact KT1-1 is connected with a power supply VCC, the other end of the time-delay disconnection normally-open contact KT1-1 is connected with the light emitting diode LED1 in series through a resistor R10, the negative electrode of the light emitting diode LED1 is connected with a resistor R10, the positive electrode of the light emitting diode LED1 is connected with the negative electrode of the buzzer S through a resistor R11 and a coil L1, the positive electrode of the buzzer S is connected with one end of the time-delay disconnection normally-open contact KT1-1 through a triode VT2 and a resistor R12, the triode VT2 is an NPN type triode, the emitting electrode of the triode VT2 is grounded, the collecting electrode of the triode VT2 is connected with the positive electrode of the buzzer S, the base of the triode VT2 is connected with the resistor R12, a resistor R13 and a capacitor C1 are connected between the base and the emitting electrode of.
The VCC pin of the single chip computer MCS-51 is connected with commercial power through a voltage stabilizing circuit, and the GND pin of the single chip computer MCS-51 is grounded.
The implementation principle of the embodiment is as follows: the commercial power supplies power to the control unit through the voltage stabilizing circuit, and the control unit is in a working state.
The method comprises the steps of recording a temperature preset value or a temperature preset value when the internal environment of the granary does not reach the standard in the control unit, controlling an operation code for alarming by the buzzer, and adjusting the resistance values of the potentiometer Rp1 and the potentiometer Rp2 according to actual working requirements, so that the detection precision of the control unit on temperature signals and humidity signals meets requirements.
And starting the special fixed alarm for the granary to enable the temperature sensor 1 to monitor the temperature condition in the granary in real time and enable the humidity sensor 2 to monitor the humidity condition in the granary in real time.
At this time, pin P1.0 of the single chip MCS-51 receives the output signal of the operational amplifier U1 and compares the output signal with the temperature preset value signal, and pin P1.1 of the single chip MCS-51 receives the output signal of the operational amplifier U2 and compares the output signal with the humidity preset value signal.
When the humidity or the temperature in the granary exceeds a preset value, the single chip microcomputer MCS-51 outputs a control signal to a P3.6 pin, the triode VT1 is conducted, the single chip microcomputer MCS-51 indirectly controls the relay KT1 to be electrified and attracted, the time-delay disconnection normally-open contact KT1-1 is closed, so that an electrified loop where the alarm module is located is conducted, the buzzer S is used for calling, the light emitting diode LED1 emits light, and the sound and light alarm is performed to warn a worker to find out the situation and take measures.
Meanwhile, the body transmits the detected temperature and humidity data to the background in an electric signal form for storage and display, so that the background staff can look up and monitor the data.
And then the control unit is sensitive to the temperature signal or the humidity signal, when the humidity or the temperature exceeds the preset value and the moisture or the thermal molecules are not completely diffused to the effective detection area of the alarm instrument, the alarm instrument is triggered to alarm because the detection sensitivity of the special fixed alarm instrument for the granary to the moisture or the thermal molecules is improved, the detection effect of the fixed alarm instrument is improved, and the alarm instrument is favorable for reminding workers to take measures in time.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a special fixed alarm instrument in granary, is including the body that is located the granary, this internal temperature sensor (1) and humidity transducer (2) of being provided with, its characterized in that: the utility model discloses a temperature sensor's (1) output electric connection has the first signal amplification unit that is used for enlargiing temperature sensor (1) output signal, the output electric connection of humidity sensor (2) has the second signal amplification unit that is used for enlargiing humidity sensor (2) output signal, first signal amplification unit with the equal electric connection of output of second signal amplification unit has same the control unit, the output electric connection of the control unit has the alarm module who is used for warning staff, alarm module's input electric connection has the switch spare that is used for controlling the disconnection of circular telegram or switches on.
2. The special fixed alarm of granary of claim 1, wherein: the first signal amplification unit comprises an operational amplifier U1, the output end of the temperature sensor (1) is connected with the forward input end of an operational amplifier U1 through a resistor R2, the reverse input end of the operational amplifier U1 is grounded through a resistor R3, a resistor R4 is connected between the forward input end and the output end of the operational amplifier U1, and the output end of the operational amplifier U1 is electrically connected with the input end of the control unit.
3. The special fixed alarm of granary of claim 2, wherein: the resistor R4 is connected in series with a potentiometer Rp 1.
4. The special fixed alarm of granary of claim 1, wherein: the second signal amplification unit comprises an operational amplifier U2, the output end of the humidity sensor (2) is connected with the forward input end of an operational amplifier U2 through a resistor R7, the reverse input end of the operational amplifier U2 is grounded through a resistor R8, a resistor R9 is connected between the forward input end and the output end of the operational amplifier U2, and the output end of the operational amplifier U2 is electrically connected with the input end of the control unit.
5. The special fixed alarm of granary of claim 4, wherein: the resistor R9 is connected in series with a potentiometer Rp 2.
6. The special fixed alarm of granary of claim 1, wherein: the switch part includes relay KT1 and triode VT1, relay KT 1's time delay disconnection normally open contact KT1-1 connect in the circular telegram return circuit at alarm module place, an output of the control unit through resistance R5 with triode VT 1's base is connected, triode VT 1's collecting electrode warp the relay KT1 connecting power VCC.
7. The special fixed alarm of granary of claim 1, wherein: one input end of the control unit is connected with a voltage stabilizing circuit, the input end of the voltage stabilizing circuit is connected with a mains supply, and one output end of the control unit is grounded.
8. The special fixed alarm of granary of claim 1, wherein: the model of the control unit is a singlechip MCS-51.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922396273.3U CN210836499U (en) | 2019-12-26 | 2019-12-26 | Special fixed alarm of granary |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922396273.3U CN210836499U (en) | 2019-12-26 | 2019-12-26 | Special fixed alarm of granary |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210836499U true CN210836499U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922396273.3U Active CN210836499U (en) | 2019-12-26 | 2019-12-26 | Special fixed alarm of granary |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210836499U (en) |
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2019
- 2019-12-26 CN CN201922396273.3U patent/CN210836499U/en active Active
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