CN111998895B - Humidity monitoring method - Google Patents
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- CN111998895B CN111998895B CN202010872320.1A CN202010872320A CN111998895B CN 111998895 B CN111998895 B CN 111998895B CN 202010872320 A CN202010872320 A CN 202010872320A CN 111998895 B CN111998895 B CN 111998895B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The embodiment of the invention provides a humidity monitoring method, which acquires real-time humidity information in real time through a humidity sensor, judges whether the difference between the humidity information measured at the next time and the humidity information measured at the previous time is more than ten percent or not to judge the condition of humidity increase, when the difference between the humidity information measured at the next time and the humidity information measured at the previous time is more than ten percent or not, the rapid increase of the humidity can cause the phenomenon of rapid condensation, a photosensitive circuit is required to detect flashover, when the flashover exists, the phenomenon of condensation already occurs, at the moment, the transformer circuit can be damaged, and a fault alarm signal is sent to remind a worker, so that the condition of flashover caused by the condensation phenomenon when the dehumidification effect is poor is not considered in a dehumidification device in the prior art is solved, the safety factor of the transformer substation is reduced, and the technical problem that accidents happen to the transformer substation is solved.
Description
Technical Field
The invention belongs to the technical field of safety monitoring of power systems, and particularly relates to a humidity monitoring method and device.
Background
Box substations, which are often installed outdoors, are susceptible to environmental factors. When the humidity in a rainy season or the surrounding environment is high, moisture permeates into the box-type substation, and causes the electrical equipment to break down, even causes safety accidents. In order to avoid the box-type substation being in a wet state, the box-type substation needs to be dehumidified.
The existing dehumidifying device does not consider the condensation phenomenon caused when the dehumidifying effect is poor, so that the flashover condition is caused, the safety factor of the transformer substation is reduced, and the accident of the transformer substation is caused.
Disclosure of Invention
The invention provides a humidity monitoring method, which solves the technical problems that in the prior art, a dehumidification device does not consider a condensation phenomenon caused by poor dehumidification effect, so that flashover is caused, the safety coefficient of a transformer substation is reduced, and accidents of the transformer substation are caused.
The embodiment of the invention provides a humidity monitoring method, which comprises the following steps:
s1: acquiring humidity information in real time through a humidity sensor to obtain the acquired humidity information in real time;
s2: judging whether the difference between the humidity information measured at the last time and the humidity information measured at the last time is more than ten percent;
s3, when the difference between the humidity information measured at the last time and the humidity information measured at the last time is more than ten percent, detecting flashover through a photosensitive circuit;
s4: and when flashover exists, sending out a fault reminding signal.
Preferably, S5: and sending the fault signal to a terminal through a wireless network, and starting a fan and a heater for dew reduction treatment.
Preferably, S0: acquiring a battery voltage value;
comparing the battery voltage value to a threshold voltage;
when the voltage value of the battery is smaller than the threshold voltage, a fault reminding signal is sent out;
when the battery voltage value is equal to or greater than the threshold voltage, S1 is executed.
The embodiment of the invention also provides a humidity monitoring device, which comprises a first power supply circuit, a photosensitive circuit, a comparison circuit, a second power supply circuit, an alarm circuit and a main controller, wherein the first power supply circuit comprises a transformer, a first rectifying circuit and a filter circuit which are sequentially and electrically connected;
the first rectifying circuit is used for rectifying the signal output by the access transformer and transmitting the signal to the filter circuit;
the filter circuit is used for filtering the signal output by the first rectifying circuit and then transmitting the signal to the photosensitive circuit;
the photosensitive circuit is used for accessing a signal of the filter circuit, adjusting the resistance of the circuit through the received light and transmitting the signal to the comparison circuit after passing through the resistance;
the comparison circuit is used for judging the received signal of the photosensitive circuit and outputting a corresponding signal to the main controller;
the second power supply circuit is used for supplying power to the alarm circuit;
the alarm circuit is used for carrying out alarm processing according to the control signal of the main controller;
the main controller is used for judging whether to send a control signal to the alarm circuit according to the signal output by the comparison circuit.
Preferably, the comparison circuit comprises a current-limiting resistor, a discharge circuit and a hysteresis comparator, the discharge circuit is used for performing discharge processing on the signals of the accessed photosensitive circuit and transmitting the discharged signals to the hysteresis comparator, and the hysteresis comparator performs judgment according to the received signals and transmits corresponding signals to the master controller according to the judgment.
Preferably, alarm circuit includes first control switch, second control switch, alarm, fan and heater, and first control switch second end is connected with the first end electricity of alarm, and first control switch first end and alarm second end are connected and are inserted the both ends of second power supply circuit respectively and form the return circuit, and first end of fan and the first end of heater are connected to second control switch second end electricity respectively, second power supply circuit's one end is connected to second control switch first end electricity, second power supply circuit's second end is connected to fan second end and heater second end electricity, first control switch and second control switch all receive the control of master controller.
Preferably, humidity monitoring devices still includes first control circuit and second control circuit, the equal master controller of first control circuit and second control circuit is connected, first control circuit includes first relay coil, second control circuit includes second relay coil, first control switch is first relay and normally opens the contact, second control switch is second relay and normally opens the contact, the master controller judges according to the signal of comparison circuit output whether to be first control circuit and second control circuit circular telegram.
Preferably, the humidity monitoring device further comprises a display circuit, and the display circuit is electrically connected with the main controller.
Preferably, the humidity monitoring device further comprises a humidity sensor circuit, the humidity sensor circuit comprises a humidity sensor power circuit, a humidity sensor alternating current bridge circuit and a humidity sensor processing circuit, the humidity sensor power circuit comprises a power supply, a voltage stabilizing circuit and an oscillating circuit, the humidity sensor alternating current bridge circuit comprises a humidity sensor and an alternating current bridge which are electrically connected, and the humidity sensor processing circuit comprises a second rectifying circuit and an operational amplifier circuit;
the power supply is used for transmitting signals to the voltage stabilizing circuit, the voltage stabilizing circuit is used for stably transmitting the signals to the oscillating circuit, the oscillating circuit is used for converting the signals into alternating current signals and outputting the alternating current signals to the alternating current bridge, the humidity sensor is connected to the alternating current bridge and used for detecting the humidity condition of the transformer and generating the signals to be fed back to the alternating current bridge, the alternating current bridge transmits the signals to the second rectifying circuit for rectification, the direct current signals rectified by the second rectifying circuit are transmitted to the operational amplifier circuit, and the operational amplifier circuit is used for outputting the signals to the main controller after operational amplification of the signals.
Preferably, the humidity monitoring device further comprises a controller and a wireless network module, the main controller is connected with the controller, the controller is connected with the wireless network module, the controller is used for controlling the wireless network module, and the wireless network module is used for communicating with an external terminal.
According to the technical scheme, the embodiment of the invention has the following advantages:
the embodiment of the invention provides a humidity monitoring method and a humidity monitoring device, wherein real-time humidity information is acquired by a humidity sensor in real time, the condition of humidity increase is judged by judging whether the difference between the humidity information measured at the next time and the humidity information measured at the previous time is more than ten percent, when the difference between the humidity information measured at the next time and the humidity information measured at the previous time is more than ten percent, the rapid increase of the humidity possibly causes the rapid fog condensation phenomenon, a photosensitive circuit is required to detect the flashover, when the flashover exists, the fog condensation phenomenon already occurs, the transformer circuit possibly is damaged, and a fault alarm signal is sent to remind a worker, so that the problem that the dewing phenomenon caused when the dehumidification effect is poor is not considered by a dehumidification device in the prior art and the flashover is caused is solved, the safety factor of the transformer substation is reduced, and the technical problem that accidents happen to the transformer substation is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a flow chart of a humidity monitoring method according to an embodiment of the present invention;
FIG. 2 is a first circuit diagram of a humidity monitoring device according to an embodiment of the present invention;
FIG. 3 is a second circuit diagram of a humidity monitoring device according to an embodiment of the present invention;
FIG. 4 is a third circuit diagram of a humidity monitoring device according to an embodiment of the present invention;
FIG. 5 is a power management circuit diagram of a humidity monitoring device according to an embodiment of the present invention;
FIG. 6 is a circuit diagram of a voltage switching circuit of a humidity monitoring device according to an embodiment of the present invention;
fig. 7 is an effect diagram of a humidity monitoring method and a humidity monitoring device according to an embodiment of the present invention.
Reference is made to the following in corresponding reference numbers in the drawings of the specification:
101. a first power supply circuit; 102. a light sensitive circuit; 103. a comparison circuit; 104. a second power supply circuit; 105. an alarm circuit; 1051. an alarm; 1052. a fan; 1053. a heater; 201. a master controller; 202. a controller; 203. a wireless network module; 204. a display circuit; 301. a humidity sensor power circuit; 302. a humidity sensor AC bridge circuit; 303. humidity sensor processing circuitry.
Detailed Description
The embodiment of the invention provides a humidity monitoring method and device, and aims to solve the technical problems that in the prior art, a dehumidification device does not consider a condensation phenomenon caused by poor dehumidification effect, so that flashover is caused, the safety coefficient of a transformer substation is reduced, and accidents happen to the transformer substation.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, a humidity monitoring apparatus according to an embodiment of the present invention includes:
s1: acquiring humidity information in real time through a humidity sensor to acquire real-time humidity information;
and detecting the humidity around the transformer substation in real time through the humidity sensor to obtain and acquire real-time humidity information.
Before this, when using humidity sensor to detect the aggressive humidity around the transformer substation, the power of traditional humidity sensor usually adopts direct current power, and humidity sensor saturation easily appears, leads to the output data inaccuracy of sensor, therefore needs to judge the battery voltage of input humidity sensor earlier, promptly still include before the S1:
s0: acquiring a battery voltage value;
comparing the battery voltage value to a threshold voltage;
when the voltage value of the battery is smaller than the threshold voltage, a fault reminding signal is sent out;
when the battery voltage value is equal to or greater than the threshold voltage, S1 is executed. When the battery voltage can not meet the working condition of the humidity sensor or is unstable, a fault reminding signal is sent out firstly to remind a worker, so that the problem that the measured value of the humidity sensor is inaccurate is solved.
S2: judging whether the difference between the humidity information measured at the last time and the humidity information measured at the last time is more than ten percent;
when the difference between the humidity information measured at the last time and the humidity information measured at the last time is less than ten percent, that is, the increase of the current humidity is not fast is indicated, and a better dehumidification effect can be kept according to the efficiency of the dehumidifier, so that the humidity information is continuously obtained for judgment, and generally, the time interval between the humidity information measured at the last time and the humidity information measured at the last time can be set to be 10 minutes for 1 minute.
S3, when the difference between the humidity information measured at the last time and the humidity information measured at the last time is more than ten percent, detecting flashover through a photosensitive circuit;
when the difference between the humidity information measured at the next time and the humidity information measured at the previous time is more than ten percent, namely the humidity is increased at the moment, the speed of the humidity is high, the dehumidifier cannot dehumidify quickly, the condition of low dehumidification efficiency may exist, condensation easily occurs when the humidity is increased quickly, a flashover phenomenon is easily generated in a transformer substation when condensation occurs, arc light flashover is detected through a photosensitive circuit, the photosensitive circuit is generally provided with photosensitive materials, such as a photosensitive resistor and the like, under the action of the flashover arc light, the resistance value of the photosensitive resistor changes, so that the existence of the flashover phenomenon is judged, and when the resistance value of the photosensitive resistor does not change, the flashover phenomenon is judged not to exist. When the flashover phenomenon does not exist, the actual risk is not high although the humidity of the transformer substation is high, and the problem can be solved by waiting for a dehumidifier to dehumidify.
S4: and when flashover exists, sending out a fault reminding signal.
When having flashover, produce flashover phenomenon promptly, there is great safety risk in the transformer substation, reminds the staff to need in time handle the condensation condition through sending failure alarm this moment, avoids accident's emergence simultaneously. Thereby the technical problem that the dehumidification device in the prior art does not consider the condensation phenomenon caused by poor dehumidification effect, and then the flashover condition is caused, the safety coefficient of the transformer substation is reduced, and accidents happen to the transformer substation is solved.
Since the substation may be installed in a place that cannot be monitored frequently, the fault signal sent out needs to be sent to a terminal through a wireless network, such as a GSM, 4G, or 5G network, and the terminal may be a mobile phone terminal or a control room of a power grid base station, so as to inform a worker that the substation is at risk. And the hot air dew reduction treatment is carried out by starting the fan and the heater 1053, so that the condition of dew condensation is prevented from being more serious, and accidents of the transformer substation are avoided.
Wherein, the step S4 is followed by the step:
s5: the acquisition of the humidity information is continued,
when the humidity information exceeds the set threshold, the blower and heater 1053 are activated to perform the condensation process.
When humidity information exceeds a set threshold, humidity is high, a fan and a heater 1053 need to be driven to perform dew condensation treatment, so that humidity is reduced, and more serious accidents are avoided.
As shown in fig. 2, an embodiment of the present invention further provides a humidity monitoring device, where the humidity monitoring device includes a first power supply circuit 101, a photosensitive circuit 102, a comparison circuit 103, a second power supply circuit 104, an alarm circuit 105, and a master controller 201, the first power supply circuit 101 includes a transformer, a first rectification circuit, and a filter circuit, which are electrically connected in sequence, the filter circuit is electrically connected to the photosensitive circuit 102, the photosensitive circuit is electrically connected to the comparison circuit 103, the comparison circuit 103 is electrically connected to the master controller 201, the second power supply circuit 104 is electrically connected to the alarm circuit 105, and the alarm circuit 105 is electrically connected to the master controller 201;
the first rectifying circuit is used for rectifying the signal output by the access transformer and transmitting the signal to the filter circuit; the rectifier bridge formed by the diode D61, the diode D62, the diode D63 and the diode D64 is a first rectifier circuit, the output end L2 of the transformer T61 is connected to the first rectifier circuit, and the input end L1 of the transformer is connected with 220V alternating-current voltage.
The filter circuit is used for filtering the signal output by the first rectifying circuit and then transmitting the signal to the photosensitive circuit; the current-limiting filter circuit formed by the resistor R61, the resistor R62, the resistor R63, the capacitor C61 and the capacitor C62 is a filter circuit, and the output voltage reaches more than 280V to supply power to the photosensitive circuit 102.
The photosensitive circuit 102 is used for accessing a signal of the filter circuit, adjusting the resistance of the circuit through the received light and transmitting the signal to the comparison circuit 103 after passing through the resistance; the photosensitive circuit 102 comprises a photosensitive resistor R334, a resistor R64, a resistor R65 and a diode D66, an arc light is generated by a flashover, when no arc light exists, the resistance value of the photosensitive resistor R334 is very large, the voltage output by the filter circuit is mainly shared by the photosensitive resistor R334, and the voltage shared by the resistor R64 is very small (the size is approximately 0). When arc light irradiates on the photoresistor R334, the resistance value of the photoresistor R334 is reduced, so that the voltage shared by the resistor R64 reaches more than 9V, current is limited by the resistor R65, and the voltage output by the diode D66 is stabilized at 9V;
the comparison circuit 103 is used for judging the received signal of the photosensitive circuit 102 and outputting a corresponding signal to the master controller 201;
the comparison circuit 103 includes a current-limiting resistor, a discharge circuit and a hysteresis comparator, the discharge circuit is configured to discharge a signal of the accessed photosensitive circuit 102 and transmit the discharged signal to the hysteresis comparator, and the hysteresis comparator performs a judgment according to the received signal and transmits a corresponding signal to the master controller 201 according to the judgment. The R67 current-limiting resistor, the capacitor C63 and the resistor R65 form a charging circuit(integrating circuit) stepping up the voltage of C63; c63 and R66 form a discharge circuit so that the "+" terminal current of comparator A61 is not too high. The resistor R68, the resistor R69, the resistor R70, and the comparator a61 constitute a hysteresis comparator, thereby preventing malfunction. When arc light irradiates the photoresistor R334, the signal U is outputdfIs 5V; when no electric arc is irradiated to the photoresistor R334, the output signal UdfIs 0 v. The signal UdfTo the master 201.
The second power supply circuit 104 is used for supplying power to the alarm circuit 105; the second power supply circuit 104 is another output end L3 of the transformer T61, and a rectifying circuit is formed by a diode D71, a diode D72, a diode D73, and a diode D74, and rectifies a signal output by the L3, outputs 24V to charge the battery, i.e., a capacitor C71 and a capacitor C72, and simultaneously supplies power to the alarm circuit 105.
The alarm circuit 105 is used for carrying out alarm processing according to a control signal of the main controller 201; the alarm circuit 105 comprises a first control switch, a second control switch, an alarm 1051, a fan 1052 and a heater 1053, wherein a second end of the first control switch is electrically connected with a first end of the alarm 1051, a first end of the first control switch and a second end of the alarm 1051 are connected and respectively connected to two ends of the second power supply circuit 104 to form a loop, a second end of the second control switch is respectively electrically connected with a first end of the fan 1052 and a first end of the heater 1053, a first end of the second control switch is electrically connected with one end of the second power supply circuit 104, a second end of the fan 1052 and a second end of the heater 1053 are electrically connected with a second end of the second power supply circuit 104, and the first control switch and the second control switch are controlled by the main controller 201.
As shown in fig. 3, the humidity monitoring device further includes a first control circuit and a second control circuit, both the first control circuit and the second control circuit are connected to a master controller 201, the first control circuit includes a first relay coil KM1, the second control circuit includes a second relay coil KM2, the first control switch is a first relay normally open contact KM11, the second control switch 202 is a second relay normally open contact KM21, and the master controller 201 outputs a comparison circuit 103The signal judges whether the first control circuit and the second control circuit are powered on. When the signal U outputted from the comparison circuit 103dfWhen the voltage is less than 0.7v, the main controller 201 controls the first relay coil KM1 and the second relay coil KM2 not to be electrified, and when the signal U output by the comparison circuit 103dfWhen the voltage is greater than 1.4v, the main controller 201 controls the first relay coil KM1 and the second relay coil KM2 to be electrified, the first relay normally-open contact KM11 is closed, the alarm 1051 is switched on to send out an alarm signal, and the second relay normally-open contact KM21 is switched on to start the heater 1053 and the fan 1052 to carry out condensation treatment. The method specifically comprises the following steps: when the dehumidification fails, condensation is generated, the condensation causes flashover of the main loop to the ground, and S334 detects arc light and sends a signal UdfRA2 pin into master 201 when UdfWhen the voltage is high, i.e. greater than 1.4V, the master controller 201 makes the pin RE1 output high voltage to drive the alarm 1051, and at the same time, sends a flashover grounding alarm to the user. Voltage U output by humidity sensor01RA1 pin to master 201 when U01When the temperature is higher than the set value, the main controller 201 enables RE2 to output high level to drive the second relay coil KM2, the normally open contact KM21 of the second relay is closed, the heater 1053 and the fan 1052 are operated simultaneously, the humidity is reduced, when the relative humidity of the environment exceeds 80%, the heater 1053 and the fan 1052 are started, as shown in FIG. 7, when the temperature is increased to 30 ℃ from 25 ℃, the relative humidity is reduced to 65% from 80%,
the master controller 201 is used for judging whether to send a control signal to the alarm circuit 105 according to the signal output by the comparison circuit 103. The master 201 is PIC18F66K 80-I/PT.
The humidity monitoring device further comprises a display circuit 204, and the display circuit 204 is electrically connected with the master 201. The display circuit 204 includes a display, which is an LCD screen, and is of a type CH 340G. The PIC18F66K80-I/PT multiple pins are connected with the CH340G, and can effectively output signals for the CH 340G.
As shown in fig. 4, the humidity monitoring apparatus further includes a humidity sensor circuit, the humidity sensor circuit includes a humidity sensor power circuit 301, a humidity sensor ac bridge circuit 302 and a humidity sensor processing circuit 303, the humidity sensor power circuit 301 includes a power supply, a voltage stabilizing circuit and an oscillating circuit, the humidity sensor ac bridge circuit 302 includes a humidity sensor and an ac bridge which are electrically connected, and the humidity sensor processing circuit 303 includes a second rectifying circuit and an operational amplifier circuit;
the power supply is MC1403N and is used for providing a standard voltage of 2.5V. The voltage stabilizing circuit is a high-precision voltage stabilizing circuit formed by an operational amplifier LM741, a triode T11, a triode T12, a resistor R4, a resistor R5 and a capacitor C1, and ensures that constant voltage of a direct current voltage amplitude value provided for the oscillating circuit is 5V; the oscillation circuit is a sine oscillation circuit formed by a triode T21, a triode T22, a first section L1 at one end of a transformer, a second section L2 at one end of the transformer and a second section L3 at two ends of the transformer, and generates a 10kHz alternating current power supply for an alternating current bridge circuit, wherein the alternating current bridge is an alternating current bridge of a voltage stabilizing diode Z23, a voltage stabilizing diode Z24, a voltage stabilizing diode Z25, a voltage stabilizing diode Z26, a voltage stabilizing diode Z27 and a voltage stabilizing diode Z28.
The second rectifying circuit is a rectifying circuit formed by four diodes;
the operational amplifier circuit is composed of a zeroing circuit of the sensor output voltage U formed by a resistor R23, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor 28 and a resistor R35, and an operational amplifier AD 522.
The power supply is used for transmitting signals to the voltage stabilizing circuit, the voltage stabilizing circuit is used for stably transmitting the signals to the oscillating circuit, the oscillating circuit is used for converting the signals into alternating current signals and outputting the alternating current signals to the alternating current bridge, the humidity sensor is connected to the alternating current bridge and used for detecting the humidity condition of the transformer and generating the signals to be fed back to the alternating current bridge, the alternating current bridge transmits the signals to the second rectifying circuit for rectification, the direct current signals rectified by the second rectifying circuit are transmitted to the operational amplifier circuit, and the operational amplifier circuit is used for outputting the signals to the main controller 201 after operational amplification of the signals.
The humidity monitoring device further comprises a controller 202 and a wireless network module 203, the main controller 201 is connected with the controller 202, the controller 202 is connected with the wireless network module 203, the controller 202 is used for controlling the wireless network module 203, and the wireless network module 203 is used for communicating with an external terminal. The controller 202 is a GTM900-C chip, the wireless network module 203 is a GSM card, the external terminal can be a mobile phone, and information reading is performed by adopting APP of the mobile phone.
As shown in fig. 5 and 6, the controller 202 and the master controller 201 adopt a chip CN3765 to perform battery charging management, and adopt two chips, i.e., a chip MP20175112315 and a chip ME6118, to perform power supply voltage step-by-step conversion.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is merely a logical division of the humidity monitoring apparatus, and other divisions may be implemented in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A humidity monitoring method is implemented based on a humidity monitoring device and is characterized in that: the humidity monitoring method comprises the following steps:
s1: acquiring humidity information in real time through a humidity sensor to acquire real-time humidity information;
s2: judging whether the difference between the humidity information measured at the last time and the humidity information measured at the last time is more than ten percent;
s3: when the difference between the humidity information measured at the next time and the humidity information measured at the previous time is more than ten percent, detecting flashover through a photosensitive circuit;
s4: when flashover exists, a fault reminding signal is sent out;
s5: continuously acquiring humidity information, and starting a fan and a heater to perform dew condensation treatment when the humidity information exceeds a set threshold;
the humidity monitoring device comprises a first power supply circuit, a photosensitive circuit, a comparison circuit, a second power supply circuit, an alarm circuit, a main controller and a humidity sensor circuit, the first power supply circuit comprises a transformer, a first rectifying circuit and a filter circuit which are electrically connected in sequence, the filter circuit is electrically connected with the photosensitive circuit, the photosensitive circuit is electrically connected with the comparison circuit, the comparison circuit is electrically connected with the main controller, the second power supply circuit is electrically connected with an alarm circuit, the alarm circuit is electrically connected with the main controller, the humidity sensor circuit comprises a humidity sensor power circuit, a humidity sensor alternating current bridge circuit and a humidity sensor processing circuit, the humidity sensor power circuit comprises a power supply, a voltage stabilizing circuit and an oscillating circuit, the humidity sensor alternating current bridge circuit comprises a humidity sensor and an alternating current bridge which are electrically connected, and the humidity sensor processing circuit comprises a second rectifying circuit and an operational amplifier circuit;
the first rectifying circuit is used for rectifying the signal output by the access transformer and transmitting the signal to the filter circuit;
the filter circuit is used for filtering the signal output by the first rectifying circuit and then transmitting the signal to the photosensitive circuit;
the photosensitive circuit is used for accessing a signal of the filter circuit, adjusting the resistance of the circuit through the received light and transmitting the signal to the comparison circuit after passing through the resistance;
the comparison circuit is used for judging the received signal of the photosensitive circuit and outputting a corresponding signal to the main controller;
the second power supply circuit is used for supplying power to the alarm circuit;
the alarm circuit is used for carrying out alarm processing according to the control signal of the main controller;
the main controller is used for judging whether to send a control signal to the alarm circuit according to the signal output by the comparison circuit;
the power supply is used for transmitting signals to the voltage stabilizing circuit, the voltage stabilizing circuit is used for stably transmitting the signals to the oscillating circuit, the oscillating circuit is used for converting the signals into alternating current signals and outputting the alternating current signals to the alternating current bridge, the humidity sensor is connected to the alternating current bridge and used for detecting the humidity condition of the transformer and generating the signals to be fed back to the alternating current bridge, the alternating current bridge transmits the signals to the second rectifying circuit for rectification, the direct current signals rectified by the second rectifying circuit are transmitted to the operational amplifier circuit, and the operational amplifier circuit is used for outputting the signals to the main controller after operational amplification of the signals.
2. A humidity monitoring method as claimed in claim 1, wherein: the S1 may further include:
s0: acquiring a battery voltage value;
comparing the battery voltage value to a threshold voltage;
when the voltage value of the battery is smaller than the threshold voltage, a fault reminding signal is sent out;
when the battery voltage value is equal to or greater than the threshold voltage, S1 is executed.
3. The humidity monitoring method according to claim 1, wherein the comparison circuit comprises a current limiting resistor, a discharging circuit and a hysteresis comparator, the discharging circuit is used for discharging a signal of the connected photosensitive circuit and transmitting the discharged signal to the hysteresis comparator, and the hysteresis comparator performs judgment according to the received signal and transmits a corresponding signal to the master controller according to the judgment.
4. The humidity monitoring method according to claim 3, wherein the alarm circuit comprises a first control switch, a second control switch, an alarm, a fan and a heater, a second end of the first control switch is electrically connected to a first end of the alarm, the first end of the first control switch and a second end of the alarm are connected to two ends of a second power supply circuit respectively to form a loop, a second end of the second control switch is electrically connected to a first end of the fan and a first end of the heater respectively, the first end of the second control switch is electrically connected to one end of the second power supply circuit, the second end of the fan and the second end of the heater are electrically connected to a second end of the second power supply circuit, and the first control switch and the second control switch are controlled by a main controller.
5. The humidity monitoring method according to claim 4, wherein the humidity monitoring device further comprises a first control circuit and a second control circuit, the first control circuit and the second control circuit are both connected by a master controller, the first control circuit comprises a first relay coil, the second control circuit comprises a second relay coil, the first control switch is a first relay normally open contact, the second control switch is a second relay normally open contact, and the master controller determines whether the first control circuit and the second control circuit are powered on according to a signal output by the comparison circuit.
6. The humidity monitoring method as claimed in claim 5, wherein the humidity monitoring device further comprises a display circuit electrically connected to the main controller.
7. The humidity monitoring method according to claim 6, wherein the humidity monitoring device further comprises a controller and a wireless network module, the controller is connected to the controller, the controller is connected to the wireless network module, the controller is used for controlling the wireless network module, and the wireless network module is used for communicating with an external terminal.
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