CN206470633U

CN206470633U - A kind of power equipment temperature and humidity controller

Info

Publication number: CN206470633U
Application number: CN201621495067.8U
Authority: CN
Inventors: 韩团军
Original assignee: Shaanxi University of Technology
Current assignee: Shaanxi University of Technology
Priority date: 2016-12-25
Filing date: 2016-12-25
Publication date: 2017-09-05
Anticipated expiration: 2026-12-25

Abstract

The utility model discloses a kind of power equipment temperature and humidity controller, single-chip microcomputer respectively with power supply, keyboard, light-emitting diode display, house dog connects, single-chip microcomputer passes through I/O mouthfuls and computer heating control output circuit, air-blower control output circuit is connected, single-chip microcomputer connects host computer by RS232 interfaces, Temperature Humidity Sensor is internally provided with temperature sensor, humidity sensor, amplifier, photoelectric coupling circuit, ADC, temperature sensor, humidity sensor is connected by amplifier with photoelectric coupling circuit, photoelectric coupling circuit connects single-chip microcomputer by ADC, the I/O mouths connection voice synthetic module of single-chip microcomputer, single-chip microcomputer controls drive the speaker by PWM pulse-width modulation circuits, the utility model is simple in construction, measure efficiently and accurately, monitoring in real time and control can be carried out to device interior and surrounding environment humiture, it is safe and reliable, fault rate is low.

Description

A kind of power equipment temperature and humidity controller

Technical field

The utility model is related to temperature and humidity controller technical field, specifically a kind of power equipment Temperature and Humidity Control Device.

Background technology

Many power equipments require and run under certain environmental conditions, such as electric protection cabinet, instrument box, metering cabinet, open The equipment such as cabinet etc., terminal box are closed, temperature is too low, temperature is too high, humidity is excessive and the safe operation all to power equipment such as condensation Constitute a threat to.The measurement and control of obvious temperature and humidity parameter are urgent problems.And existing temperature and humidity controller Action effect is not obvious, it is impossible to device interior and surrounding environment humiture are monitored in real time, measurement result precision is low, equipment Overheat overly moist easily occurs fire, climbs the accidents such as electricity, and security is low.

Therefore, for overcome the shortcomings of above-mentioned technology design it is a it is simple in construction, measurement efficiently and accurately, can be in equipment Portion and surrounding environment humiture carry out the monitoring a kind of power equipment humiture control low with control, safe and reliable, fault rate in real time Device processed, exactly inventor problem to be solved.

Utility model content

In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of power equipment temperature and humidity controller, its It is simple in construction, efficiently and accurately is measured, monitoring in real time and control can be carried out to device interior and surrounding environment humiture, safely may be used Lean on, fault rate is low.

The utility model solves the technical scheme that its technical problem used：A kind of power equipment temperature and humidity controller, Including single-chip microcomputer, Temperature Humidity Sensor, air-blower control output circuit, power supply, keyboard, light-emitting diode display, computer heating control output electricity Road, the single-chip microcomputer is connected with power supply, keyboard, light-emitting diode display, house dog respectively, and the single-chip microcomputer is respectively by I/O mouthfuls with adding Thermal control output circuit, the connection of air-blower control output circuit, the single-chip microcomputer connect host computer, the temperature by RS232 interfaces Humidity sensor is internally provided with temperature sensor, humidity sensor, amplifier, photoelectric coupling circuit, ADC modules, the temperature Degree sensor, humidity sensor are connected by amplifier with photoelectric coupling circuit, and the photoelectric coupling circuit is connected by ADC Single-chip microcomputer is connect, the I/O mouths connection voice synthetic module of the single-chip microcomputer, the single-chip microcomputer is controlled by PWM pulse-width modulation circuits Drive the speaker.

Further, the single-chip microcomputer selects PIC16F877A chips.

Further, the Temperature Humidity Sensor selects SHT11 chips.

Further, the keyboard includes predetermined value set key, forces heating key, up-regulation key, down key.

Further, the power pins are provided at both ends with filter capacitor.

The beneficial effects of the utility model are：

1st, the utility model is simple in construction, using PIC16F877A microcontrollers as main control chip, and number is constituted using SHT11 Word temperature and humidity controller, Temperature Humidity Sensor detects to the temperature of relative humidity and environment, then PIC16F877A micro-controls Device processed obtains digital temperature-humidity signal from SHT11 serial line interface, further using microcontroller implementation temperature-compensating and relatively The nonlinear compensation of humidity, last relative humidity and actual temperature value send light-emitting diode display to show, start heater or wind if necessary Machine, so as to realize the control to local ambient temperature and humidity, measures efficiently and accurately, device interior and surrounding environment humiture can be entered Row monitoring in real time and control, safe and reliable, fault rate is low.

Brief description of the drawings

Fig. 1 is the utility model system architecture diagram.

Fig. 2 is the utility model Temperature and Humidity process circuit figure.

Fig. 3 is the utility model output control circuit figure.

Embodiment

With reference to specific embodiment, the utility model is expanded on further, it should be appreciated that these embodiments are merely to illustrate this Utility model rather than limitation scope of the present utility model.In addition, it is to be understood that reading the content of the utility model instruction Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values also fall within application Appended claims limited range.

It is the utility model system architecture diagram, a kind of power equipment temperature and humidity controller of the structure, including list referring to Fig. 1 Piece machine, Temperature Humidity Sensor, air-blower control output circuit, power supply, keyboard, LED displays, computer heating control output circuit, monolithic Machine is connected with power supply, keyboard, light-emitting diode display, house dog respectively, single-chip microcomputer respectively by I/O mouthfuls with computer heating control output circuit, Air-blower control output circuit is connected, and single-chip microcomputer connects host computer by RS232 interfaces, and Temperature Humidity Sensor is internally provided with temperature Sensor, humidity sensor, amplifier, photoelectric coupling circuit, ADC, temperature sensor, humidity sensor pass through amplifier It is connected with photoelectric coupling circuit, photoelectric coupling circuit connects single-chip microcomputer by ADC, the I/O mouths connection voice of single-chip microcomputer is closed Into module, single-chip microcomputer controls drive the speaker by PWM pulse-width modulation circuits.Single-chip microcomputer selects PIC16F877A chips, warm and humid Spend sensor and select SHT11 chips, keyboard includes predetermined value set key, forces heating key, up-regulation key, down key, and power supply draws Pin is provided at both ends with filter capacitor.

System detects scene using PIC16F877A microcontrollers as core using intelligent temperature-humidity sensor SHT11 Temperature, humidity value are directly changed into send into single-chip microcomputer after digital quantity by temperature and humidity, SHT11 digital hygro sensors In, then the nonlinear compensation by single-chip microcomputer completion relative humidity and temperature-compensating, input data is through single-chip microcomputer by predetermined algorithm Data processing is carried out, and the control targe of setting carries out deviation computing, and send light-emitting diode display by actual temperature and rh value It has been shown that, finally according to humiture bound through I/O mouthfuls of output real-time control signals, starts heater heating or blower fan cooling, from And realize the observing and controlling to ambient temperature and humidity.

It is the utility model Temperature and Humidity process circuit figure, power equipment temperature and humidity controller hardware circuit referring to Fig. 2 It is made up of Temperature and Humidity circuit, keyboard circuit, display circuit, control output circuit, sound circuit etc..Temperature Humidity Sensor is selected SHT11 chips are used, it can measure humidity, temperature and dew point simultaneously, process does not need peripheral cell can direct output result Value.And can effectively make up traditional epidemic disaster biography by the data signal of relative humidity, temperature and the dew point demarcated The deficiency of sensor.It is measured and realizes communication, Temperature Humidity Sensor SHT11 will be stopped, so that automatically into dormancy Pattern, while humidity, temperature data are sent out by SHT11.

Set to complete predetermined value in pressure heating function, controller there is provided 4 keyboards, respectively predetermined value are set Key, pressure heating key, up-regulation key, down key, 4 keyboards are connected to power supply by 10K resistance, and pull-up terminates RB mouthfuls of single-chip microcomputer, Set key and force heating is bonded to carry I/O mouthfuls of level interrupt, corresponding function is performed to trigger single-chip microcomputer.Upper mediation down key Then It is not necessary to use level interrupt, using common I/O mouthfuls.Display circuit uses 8 common cathode LED numbers of MAX7219 chip drives Code pipe work.Connection between MAX7219 driving chips and microprocessor needs three wires, and the bit digital of each of which is shown An address has been required for, and has been performed by microprocessor write-in control.User is allowed to be selected in display circuit design process Every is that the mode of BCD decodings or the mode not decoded are carried out.Various patterns also may be selected in user when being designed Setting, such as：The digital brightness control, shutdown, the test of numeral method device and the LED scanning digit isotypes of charactron.

It is the utility model output control circuit figure referring to Fig. 3, when single-chip microcomputer detects the warm and humid angle value of sensor measurement Just start the partial circuit work during with scope beyond predetermined value, use light-coupled isolation to improve system rejection to disturbance ability.When When single-chip microcomputer REO ends are output as 0, photoelectrical coupler ON operation, relay is started working by adhesive, and heater is started working, Heating process starts.Wherein, when relay disconnects, reverse instantaneous high pressure is produced on relay coil, so that relay be damaged Bad, D7 is mainly for the protection of relay.6 high current diodes have been concatenated in heating circuit, per triplets, two prescriptions to Opposite one provides alternating current path, and it is that pressure drop, 2V or so are produced thereon to flow through every group of diode when exchange, the supply of this voltage The two-way optocoupler work in break alarm loop, limits current resistor R16, filter capacitor C22,1M resistance is attempted by into each two Pole pipe two ends, the resistance is used for averagely being added in the voltage at diode two ends, and the phenomenon of diode heating uneven phenomenon will be eliminated. When heating circuit breaks, there is no electric current to flow through on diode, pressure drop would not be produced, two-way optocoupler PS2505 is not turned on, ALARM_A ends are set to height, so as to trigger single-chip microcomputer alarm.

In order to be able to reach more preferable man-machine information interchange, system adds phonological component, and the part uses embedded Chinese Chipspeech OSYNO 6188 realizes the warm and humid angle value of voice broadcast and warning function.Serial i/O mouthfuls of TXD of single-chip microcomputer and RXD and TXD mouthfuls of RXD difference OSYNO 6188 are connected, and text to be synthesized is issued by asynchronous serial communication single-chip microcomputer OSYNO 6188, loudspeaker is exported by PWM and directly driven, and also can connect power tube by 1 pin VO come drive the speaker.XOUT、 XIN two pins must connect 16MHz crystal oscillators.OSYNO 6188 provides two groups of power inputs VDD and CVDD, two groups of power sharing power supplys Ground GND, CVDD will be less than vdd voltage, be depressured by directly concatenating two diodes with VDD in CVDD.To make system reliable Work, adds filter capacitor at power pins two ends.

The measurement of the utility model temperature and humidity is accurate, and measurement accuracy is high, faster system response, when humiture exceeds default model Corresponding actuating of relay when enclosing, when humiture returns to safe range, relay disconnects, while device also has pressure heating work( Can, its practical value is high.Using PIC16F877A microcontrollers as main control chip, digital temperature and humidity controller is constituted using SHT11, It is mainly used in the power equipments such as switch cubicle, terminal box.Temperature Humidity Sensor is examined to the temperature of relative humidity and environment first Survey, then PIC16F877A microcontrollers obtain digital temperature-humidity signal from SHT11 serial line interface, further utilize microcontroller Device realizes the nonlinear compensation of temperature-compensating and relative humidity, and last relative humidity and actual temperature value send light-emitting diode display to show, Start heater or blower fan if necessary, so as to realize the control to local ambient temperature and humidity.

Claims

1. a kind of power equipment temperature and humidity controller, it is characterised in that：It is defeated including single-chip microcomputer, Temperature Humidity Sensor, air-blower control Go out circuit, power supply, keyboard, light-emitting diode display, computer heating control output circuit, the single-chip microcomputer is shown with power supply, keyboard, LED respectively Device, house dog connection, the single-chip microcomputer are connected by I/O mouthfuls with computer heating control output circuit, air-blower control output circuit respectively, The single-chip microcomputer connects host computer by RS232 interfaces, and the Temperature Humidity Sensor is internally provided with temperature sensor, humidity and passed Sensor, amplifier, photoelectric coupling circuit, ADC, the temperature sensor, humidity sensor pass through amplifier and photoelectricity coupling Circuit connection is closed, the photoelectric coupling circuit connects single-chip microcomputer by ADC, and the I/O mouths connection voice of the single-chip microcomputer is closed Into module, the single-chip microcomputer controls drive the speaker by PWM pulse-width modulation circuits.

2. a kind of power equipment temperature and humidity controller according to claim 1, it is characterised in that：The single-chip microcomputer is selected PIC16F877A chips.

3. a kind of power equipment temperature and humidity controller according to claim 1, it is characterised in that：The Temperature Humidity Sensor From SHT11 chips.

4. a kind of power equipment temperature and humidity controller according to claim 1, it is characterised in that：The keyboard includes pre- Definite value set key, pressure heating key, up-regulation key, down key.

5. a kind of power equipment temperature and humidity controller according to claim 1, it is characterised in that：The power pins two ends It is provided with filter capacitor.