CN205980176U - Indoor temperature controller - Google Patents

Abstract

The utility model relates to an indoor temperature controller, through control heating lock valve, automatic control heating lock valve opening and closing, heating temperature's device in the chamber regulator. Including the drain pan, and a front cover, button and control circuit board, control circuit board is by power supply circuit, the CPU circuit, a liquid crystal display screen, the LCD circuit that is shaded, key input circuit, RS485 communication circuit and temperature measuring circuit constitute, is power supply circuit by AC DC power module and low -dropout regulator constitute, the low -power consumption singlechip is chooseed for use to the CPU circuit, liquid crystal display shows the signal that the CPU circuit provided, LCD circuit in a poor light provides in a poor light for liquid crystal display, key input circuit's button incoming signal through capacitor filter disappear tremble after, send into the CPU circuit, RS485 communication circuit comprises integrated circuit MAX485, temperature measuring circuit uses temperature sensitive resistance and reference voltage source to constitute. The utility model discloses the mounting means is nimble simple, the operation maintenance of being convenient for.

Description

A kind of indoor temperature controller

Technical field

This utility model is related to a kind of indoor temperature controller.

Background technology

Make-and-break time area-method refers to：With building hotlist for trade settlement point, by calculate the user's heat time, area and Carry out a kind of metering method of Cost Allocation with hot temperature, its advantage is to share rationally, and energy effective guarantee is for the profit of both sides Benefit.Make-and-break time area-method is the main stream approach of domestic heat metering transformation at present, meets《People's Republic of China's energy saving Method》Article 38, require：Heat metering device, heating system regulation device and interior should be installed to the building carrying out central heating Attemperating unit.But there is presently no and be specifically designed for indoor central heating and carry out temperature control thus simple, the price that reaches energy-conservation and structure Rational attemperating unit.

Utility model content

This utility model is according to make-and-break time area heat sharing metering method it is therefore intended that providing one kind can pass through to control Heating lock valve, according to the temperature setting, automatically controls the open and close of heating lock valve, adjusts the dress of indoor heating temperature Put.

This utility model is realized by technical scheme below：

A kind of indoor temperature controller, including drain pan, protecgulum, button and control board, protecgulum is arranged on drain pan, presses Key is arranged on protecgulum, and control board is arranged on protecgulum towards on the face of drain pan side, control board by power circuit, Cpu circuit, LCDs, LCD backlight circuit, button inputting circuits, RS485 communication circuit and temperature measuring circuit composition, Power circuit is made up of AC-DC power module and low-dropout regulator, and alternating current 220V is converted to direct current by AC-DC power module 5V, is supplied to each circuit and uses, as forward voltage actuator, the 5V that AC-DC power module is provided is straight for low-dropout regulator The 3.3V DC voltage that stream voltage conversion needs for cpu circuit, cpu circuit selects low-power scm, and LCDs show The signal that cpu circuit provides, content is：Heat supply is opened, heat supply is closed, manually, automatically, setting, room temperature, heat supply timing, LCD backlight electricity Road provides backlight for LCDs, and the open and close of backlight are controlled by cpu circuit, and the button of button inputting circuits includes electricity Source button, circulation button, clock button, upper regulating key, lower regulating key, after key-press input signal disappears through capacitor filtering and trembles, Send into cpu circuit, RS485 communication circuit is made up of integrated circuit MAX485, it is outer that cpu circuit passes through the control of RS485 communication circuit Heat lock valve in portion, and temperature measuring circuit uses thermo-sensitive resistor and reference voltage source to constitute, and indoor temperature is changed by thermo-sensitive resistor It is sent to cpu circuit for resistance value to process.

Power circuit AC-DC power module model LH05-10B05, low-dropout regulator model SPX1117M3- 3.3.

Low-power scm model EFM32TG840 that cpu circuit is selected.

Temperature measuring circuit uses model TSM0A224 of thermo-sensitive resistor, and reference voltage source is by integrated circuit LM236- 2.5V providing.

This utility model mounting means is flexibly simple, is easy to Operation and Maintenance.

Brief description

Fig. 1 is isometric views of the present utility model；

Fig. 2 is structural representation of the present utility model；

Fig. 3 is theory diagram of the present utility model.

Specific embodiment

As Figure 1-3, this utility model is made up of drain pan 1, protecgulum 2, button 3 and control board 4.

As shown in Fig. 2 control board 4 is core component of the present utility model.As shown in figure 3, control board 4 is by electricity Source circuit, cpu circuit, LCDs, LCD backlight circuit, button inputting circuits, RS485 communication circuit, temperature measuring circuit Composition.

Power circuit is made up of AC-DC power module and low-dropout regulator SPX1117M3-3.3, from LH05-10B05 Alternating current 220V is converted to direct current 5V, rated current 5A, is supplied to each circuit and uses.Low-dropout regulator SPX1117M3-3.3 It is a low-power consumption forward voltage actuator, the 5V DC voltage that AC-DC power module is provided is converted to cpu circuit needs 3.3V DC voltage.

Cpu circuit selects single-chip microcomputer EFM32TG840, is the ultralow work(of the up-to-date release of Energy Micro from Norway Consumption ARM product, is 32 Cortex-M3 core design based on ARM company, in contrast to traditional 8,16 monolithics Machine, it has a higher computing data disposal ability, higher code density, lower power consumption, has been internally integrated 8 × 20 sections Lcd driver, meet the demand of direct drive LCDs, and power consumption is only 550nA.The I/O of EFM32TG840 is permissible It is set to low-power consumption mode to wake up and GPIO interrupt mode, therefore outer operating pushbutton can be realized interacting under the conditions of low-power consumption Control action, is a high performance 32 bit processors.

LCDs select FY-BT82255AMN, and display content is：Heat supply is opened, heat supply is closed, manually, automatically, setting, Room temperature, heat supply timing.Using white backlight, display effect is clear.

LCD backlight circuit provides backlight for LCDs, and circuit is evenly distributed on liquid using 5 groups of white light-emitting diodes The back side of crystal display screen, the open and close of backlight are controlled by cpu circuit.

Button inputting circuits select button PB-22E60, feel is neither too hard, nor too soft, button be from left to right followed successively by power button, Circulation button, clock button, upper regulating key, lower regulating key.Disappear through capacitor filtering after trembling, signal is sent into cpu circuit.

RS485 communication circuit is made up of integrated circuit MAX485, and integrated circuit MAX485 is for RS-485 and RS-422 The low-power consumption transceiver of communication, has a driver and a receptor in each device.There is limit Slew Rate driver, can To reduce EMI, and reduce the reflection being caused by inappropriate terminal coupling cable, realize the error-free data of highest 250kbps Transmission.

Temperature measuring circuit uses thermo-sensitive resistor TSM0A224, and reference voltage source is provided by integrated circuit LM236-2.5V. Indoor temperature is converted to resistance value and is sent to cpu circuit process by thermo-sensitive resistor TSM0A224.

This utility model is auxiliary products of make-and-break time area-method heat death theory modification scheme, is installed on user room Interior, user can adjust the heating temperature of interior according to their needs.Major function is provided with room temperature and sets：User is as needed The indoor heating temperature of setting, also dependent on the switch shape of the control temperature needing setting different periods or heating lock valve State.Room temperature controls：Under auto state, according to room temperature design temperature, control the open and close of heating lock valve, control indoor Temperature reaches design temperature.The open and close of heating lock valve can directly be controlled under manual mode, meet different heat demand.

Claims (2)

1. a kind of indoor temperature controller, is characterized in that：Including drain pan, protecgulum, button and control board, protecgulum is arranged on bottom On shell, button is arranged on protecgulum, and control board is arranged on protecgulum towards on the face of drain pan side, and control board is by power supply Circuit, cpu circuit, LCDs, LCD backlight circuit, button inputting circuits, RS485 communication circuit and temperature measuring circuit Composition, power circuit is made up of AC-DC power module and low-dropout regulator, and alternating current 220V is converted to by AC-DC power module Direct current 5V, is supplied to each circuit and uses, low-dropout regulator, as forward voltage actuator, AC-DC power module is provided 5V DC voltage is converted to the 3.3V DC voltage of cpu circuit needs, and cpu circuit selects low-power scm, LCDs The signal that display cpu circuit provides, content includes：Heat supply is opened, heat supply is closed, manually, automatically, setting, room temperature and heat supply timing, LCD backlight circuit provides backlight for LCDs, and the open and close of backlight are controlled by cpu circuit, button inputting circuits Button includes power button, circulation button, clock button, upper regulating key, lower regulating key, and key-press input signal is filtered through electric capacity After ripple disappears and trembles, send into cpu circuit, RS485 communication circuit is made up of integrated circuit MAX485, cpu circuit passes through RS485 communication electricity Road controls outside heating lock valve, and temperature measuring circuit uses thermo-sensitive resistor and reference voltage source to constitute, and thermo-sensitive resistor is by interior Temperature transition is sent to cpu circuit for resistance value and processes.

2. a kind of indoor temperature controller according to claim 1, is characterized in that：Power circuit AC-DC power module type Number be LH05-10B05, low-dropout regulator model SPX1117M3-3.3, cpu circuit select low-power scm model For EFM32TG840, using model TSMOA224 of thermo-sensitive resistor, reference voltage source is by integrated circuit for temperature measuring circuit LM236-2.5V provides.