CN207380582U - A kind of remote controlled temperature control system - Google Patents

Abstract

The utility model discloses a kind of remote controlled temperature control systems, including the device server mutually communicated by internet and wechat server, multiple reception terminals being connected with device server and the control terminal for passing through wireless network connection with wechat server are further included；Receiving terminal includes babinet and the controller for regulating box temperature；Controller includes temperature control mainboard and the solid-state relay control circuit and thyristor regulating volt circuit that are connected respectively with temperature control mainboard；Heating unit and refrigerating plant are equipped in babinet；Wherein, solid-state relay control circuit is connected with heating unit, and thyristor regulating volt circuit is connected with refrigerating plant.The remote controlled temperature control system of the utility model, which can be realized, regulates and controls temperature of the babinet in 26 DEG C~150 DEG C scopes, it can carry out long-range temperature control and the reading of real time temperature data to temperature control babinet by wechat public platform simultaneously, realize the automation and intelligence of experiment scene.

Description

A kind of remote controlled temperature control system

Technical field

The utility model is related to a kind of remote controlled temperature control systems, belong to intelligence instrument technical field.

Background technology

In modern scientific research field, environment temperature is often an important test index, generally also influences experimental result An important factor for, under many experiment scenes, it is desirable that environment temperature can have more sensitive with test requirements document in a long time Response.Danger experiment scene and under conditions of the longer test period, it is necessary to test temperature can be regulated and controled with the need, and It can accomplish that test temperature is controlled and recorded whenever and wherever possible, even if intelligence is realized in regulation and control.As Internet of Things rises, this Concept is also increasingly introducing instrumental science field.There are three very friendly primary conditions for wechat platform itself tool：One It is ripe platform technology, second is that huge user group, third, open user platform, these three conditions become Internet of Things for wechat The user control terminal of net smart machine is laid a good foundation.

Utility model content

Purpose of utility model：The technical problem to be solved by the utility model is to provide a kind of remote controlled temperature controls System processed, the temperature control system can realize that temperature as needed remotely regulates and controls the temperature in experiment casing.

In order to solve the above technical problems, technical solution is used by the utility model：

A kind of remote controlled temperature control system, including the device server mutually communicated by internet and wechat Server further includes multiple reception terminals being connected with device server and passes through wireless network connection with wechat server Control terminal；The reception terminal includes babinet and the controller for regulating box temperature；The controller is fixed on On babinet lateral wall；The controller includes temperature control mainboard and the solid-state relay control circuit being connected respectively with temperature control mainboard With thyristor regulating volt circuit；Heating unit and refrigerating plant are equipped in the babinet；Wherein, the solid-state relay control circuit It is connected with heating unit, the thyristor regulating volt circuit is connected with refrigerating plant.

Wherein, further include the power module and serial port circuit being connected with temperature control mainboard, the in vivo heating unit of case and Refrigerating plant is powered by power module, and the temperature control mainboard is connected by serial bus with device server.

Wherein, the device server is made of mainboard chip and Ethernet transceiving chip；The model of mainboard chip STM32f103ZET6, the model ENC28J60 of Ethernet transceiving chip.

Wherein, temperature sensor is additionally provided in the babinet, the temperature sensor is connected with temperature control mainboard.

Wherein, the babinet is enclosed by double-deck iron nickel alloy steel plate, is filled between the double-deck iron nickel alloy steel plate There is aerogel blanket.

Wherein, the heating unit is silicon rubber heating plate, and the silicon rubber heating plate is located in babinet；The refrigeration dress Compressor is set to, the compressor is fixed on babinet lateral wall, and the copper pipe of compressor is arranged in babinet.

Wherein, optical coupling isolator is contained in the solid-state relay control circuit, temperature control mainboard is isolated through optical coupling isolator Afterwards, it is connected by solid-state relay with silicon rubber heating plate, temperature control mainboard is by controlling the folding control silicon rubber of solid-state relay The heating temperature of glue heating plate.

Wherein, the thyristor regulating volt circuit is made of bidirectional triode thyristor and digital regulation resistance, and temperature control mainboard passes through controllable Silicon regulating circuit adjusts the voltage of motor in incoming transport compressor.

Compared with prior art, technical solutions of the utility model have an advantageous effect in that：

The remote controlled temperature control system of the utility model disclosure satisfy that in experiment casing -26 DEG C~150 DEG C scopes Temperature regulation and control, while wechat public platform can be passed through, long-range temperature control and the reading of real time temperature data are carried out to temperature control babinet It takes, realizes the automation and intelligence of experiment scene；I.e. operating personnel can pass through wechat public platform sending device number and setting temperature Angle value achievees the purpose that setting experiment casing special test temperature, realizes unattended test objective.

Description of the drawings

Fig. 1 is the system diagram of the remote controlled temperature control system of the utility model；

Fig. 2 is the module frame chart of temperature control mainboard in the remote controlled temperature control system of the utility model；

Fig. 3 is the top view of the remote controlled temperature control system middle case of the utility model；

Fig. 4 is the sectional view of the remote controlled temperature control system middle case of the utility model；

Fig. 5 is the circuit diagram that the utility model temperature control mainboard controls chip；

Fig. 6 is the circuit diagram of the utility model solid-state relay control circuit；

Fig. 7 is the circuit diagram of the utility model thyristor regulating volt circuit；

Fig. 8 is the circuit diagram that the utility model serial ports turns USB circuit；

Fig. 9 is the circuit diagram of the utility model power module；

Figure 10 is the circuit diagram of the utility model temperature acquisition interface；

Figure 11 is the circuit diagram of the utility model OLED display interfaces；

Figure 12 is the system principle diagram of the remote controlled temperature control system of the utility model；

Figure 13 is the remote controlled temperature control system remote control flow chart of the utility model.

Specific embodiment

The technical solution of the utility model is described further below in conjunction with attached drawing.

As shown in figures 1-4, the remote controlled temperature control system of the utility model, including passing through internet phase intercommunication The device server and wechat server of news further include multiple reception terminals being connected with device server and are taken with wechat Business control terminal of the device by wireless network connection；Receiving terminal includes babinet 1 and the controller for regulating box temperature 2；Controller 2 is fixed on 1 lateral wall of babinet, and controller 2 is fixed on by insulated bolt on babinet 1；Controller 2 includes temperature control Mainboard and the solid-state relay control circuit being connected respectively with temperature control mainboard and thyristor regulating volt circuit；It is equipped with and adds in babinet 1 Thermal 3 and refrigerating plant；Wherein, solid-state relay control circuit is connected with heating unit 3, thyristor regulating volt circuit and refrigeration Device connects；Heating unit 3 is silicon rubber heating plate, and silicon rubber heating plate 3 is located in babinet 1, in the front and rear wall of box house On respectively post a silicon rubber heating plate 3 for heating；Refrigerating plant is AC compressor 4, and AC compressor 4 is fixed on babinet On 1 lateral wall, the copper pipe 5 of AC compressor 4 is arranged in babinet 1, and the stretching of three circle AC compressors 4 is wound in babinet 1 Copper pipe 5 is used to freeze.

The babinet 1 is experiment casing, needs the examination for carrying out humid test or stress test at a certain temperature for placing Device is tested, babinet 1 is seal case, and babinet 1 is equipped with insulation cover, and insulation cover is hinged by hinge and babinet 1；On babinet 1 also Equipped with the mounting hole 9 for placement or mount stress device.Babinet 1 is enclosed by double-deck iron nickel alloy steel plate, double-deck iron nickel Aerogel blanket 6 is filled between alloy-steel plate；It is smaller in 1 inside of temperature controlled processes middle case and air generation in order to ensure Heat exchange selects new material aerogel blanket 6 as heat-barrier material, aerogel blanket 6 and outer layer iron-nickel alloy steel plate 7 and internal layer iron Gap between nickel alloy steel plate 8 is sealed using glue, ensures that sealing is intact.

Terminal is received in the present embodiment, and only there are one equipment Device001 (i.e. only there are one temperature control babinets).

As shown in figure 5, the control chip U7 models STM32f103ZET6 that temperature control mainboard is selected, 17,52,39,62, 72nd, 84,95,108,121,131,144 pins are VDD, connection control chip supply voltage end VCC3.3,16,38, 51st, 61,71,83,94,107,120,130,143 pins are VSS, connection ground GND, PC14-OSC32_IN pins and PC15_OSC32_OUT pins both sides connect the crystal oscillator Y2 of 32.768KHz, and crystal oscillator Y2 both sides connect the ceramic disc capacitor of 10 μ F respectively GND is grounded after C13, C14；VCC3.3 is connected after the resistance R10 of its 33 pin VDDA connections 10R, between 33 pins and 30 pins Connect the capacitance C11 and 104 capacitance C12 of 10 μ F.Mainboard chip (STM32f103ZET6) and temperature control mainboard in device server Control chip (STM32f103ZET6) be same model chip.

As shown in fig. 6, solid-state relay control circuit is to prevent alternating current 220V to temperature control mainboard chip STM32f103ZET6 Electromagnetic interference is generated or because of the improper damage temperature control mainboard that insulate, by optical coupling isolator by DC control circuit with exchanging execution circuit Isolation, triode S8050 are used as switch, when S8050 works in amplification region, the direct current of solid-state relay SSR-D3805HK-E Input terminal IN is turned on, so as to which its ac output end OUT is turned on.Silicon rubber heating plate N lines are often connected to power grid N lines, work as SSR- During the OUT conductings of D3805HK-E, the L lines of silicon rubber heating plate are connected with power grid L lines, and silicon rubber heating plate is started to work.Solid-state Control relay circuit is kept away using solid-state relay U4, model SSR_D3805HK_E, the relay without mechanical contact Exempt from spark when tradition machinery formula relay is attracted, there can be higher operating frequency.To avoid AC driving circuit pair DC control circuit impacts, while avoids damaging temperature control mainboard because of the improper alternating current circuit that insulate, solid-state relay Phototube Coupling is carried out using the optical coupling isolator U5 of model TLP521-1 between U4 and control chip U7, the pin 1 of U5 passes through VCC5 is connected after the resistance R2 of 510R, the pin 4 of No. 10 the pins PF0, U5 of the connection control chip of pin 2 U7 of U5 connect The C poles that the pin 3 of VCC5, U5 connect the model S8050, Q2 of NPN type triode Q2, triode Q2 after 510R resistance R3 connect No. 4 pins of solid-state relay U4 are connect, E poles ground connection, E poles are connected between B poles with the resistance R4 of 4.7K simultaneously；No. 3 of U4 are drawn Foot connects VCC5, No. 2 pins of No. 1 pin connection silicon rubber heating plate wire connection terminal P2 of U4, No. 2 pins connection power grid of U4 Firewire；When control chip STM32f103ZET6 using GPIO_RESET sentences control its No. 10 pin PF0 be low level when, U5 LED lighting, 3, No. 4 pins of U5 are connected so that triode Q2 works in amplification region, electric current from No. 3 pins of U4 into Enter, No. 4 pin outflows, so as to No. 3 pins of U4 and No. 4 pin conductings, the firewire of silicon rubber heating plate and the firewire phase of power grid Even, silicon rubber heating plate is begun to warm up.

As shown in fig. 7, control of silicion controlled voltage regulator circuit is by bidirectional triode thyristor Q1 (model BTA16-600B) and high-precision Digital regulation resistance U3 is formed, the A poles connection power grid firewire of Q1, No. 2 pins of K poles connection AC compressor wire connection terminal P3, G poles Connect No. 3 pins of U3；Digital regulation resistance U3 models X9C103, No. 8 pins meet power supply VCC5, and No. 4 pins are grounded GND, and 5 Number pin and No. 6 pins connect power grid firewire after 4.7K resistance R1, No. 13 pin PF3 of No. 1 pin connection control chip U7, No. 12 the pins PF2, No. 11 pin PF1 of No. 7 pin connection U7 of No. 2 pin connection control chip U7.When control chip No. 7 pins (CS pins) of STM32f103ZET6 controls U3 is low levels, and No. 2 pins (U/D pins) are low level, No. 1 pin (INC pins) is low level, then digital regulation resistance U3 accesses the resistance value meeting between resistance value i.e. No. 3 pin of circuit and No. 5 pins Increase, by controlling resistance value size between bidirectional triode thyristor Q1A poles and G poles that can realize the adjusting to the silicon-controlled Q1 angles of flow, from And achieve the purpose that adjust voltage (achieving the purpose that adjust incoming transport compressor electric motor ac voltage size).By formulaIt understands, as the alternating voltage U of incoming transport compressor electric motor_sDuring change, motor electromagnetic turns Square T_eChange in the same scale, so as to which motor speed n changes, be nominal torque during because of voltage maximum, therefore reduction can be used and connect Enter the rotating speed that voltage carrys out regulation motor, when rotating speed reduces, refrigeration work consumption reduces, so as to fulfill the control to babinet cryogenic temperature value System.

As shown in figure 8, serial ports turns USB circuit by PNP type triode S8550, NPN type triode S8050, diode 1N4148, two 1K resistance, 103 capacitance of nominal value, two 104 capacitances, 12MHz crystal oscillator Y1, CH340G chips and Micro-USB Interface forms, and No. 2 pins and No. 3 pins of chip CH340G connect PA9 the and PA10 pins of control chip respectively；Serial ports turns The chip U6 models CH340G that USB circuit uses, No. 16 pins connect VCC5 and through 104 capacitance C6 and 10 μ F capacitances C7 it After be grounded GND, the E poles of No. 14 pin connecting triode Q3, the B poles of No. 13 pins connecting triode Q3 after 1K resistance R7,1 Number pin ground connection GND, No. 4 pins connect (U6's) No. 3 pins through connecting ground GND, No. 5 pins after 104 capacitance C8, and No. 6 are drawn Foot connects (U6's) No. 2 pins, the crystal oscillator Y1 of 12MHz is connected between No. 7 pins and No. 8 pins, crystal oscillator Y1 both sides connect respectively Capacitance C9, C10 of 22 μ F is used for starting of oscillation, meets GND the opposite side of two capacitances；The anode connection control chip U7's of diode D1 No. 25 pins, cathode connect the C poles of Q3, and through connecting VCC3.3 after 10K resistance R5；The E poles connection VCC3.3 of triode Q4, C poles control No. 138 pins of chip U7, E pole of the B poles through 1K resistance R8 connecting triodes Q3 through being connected after 10R resistance R9.

As shown in figure 9, the power module of temperature control mainboard can provide three kinds of 220V alternating currents, 5V direct currents and 3.3V direct currents Voltage value.The wire connection terminal connection 220V power grids of power module are that silicon rubber heating plate and refrigeration compressor are powered, pass through model Power supply is provided for power supply board for the microminiature AC220V-DC5V isolating switch powers of HLK-PM01, by AMS1117-3.3 voltage stabilizing cores The decompression of 5V DC power supplies is supplied control chip by the voltage reduction module of piece, 104 capacitances and 220 μ F capacitances composition for 3.3V DC power supplies STM32f103ZET6 is used.Power module 220V alternating currents can be provided directly by power grid, silicon rubber heating plate wire connection terminal P2's No. 1 pin of No. 1 pin and compressor wiring terminal P3 are connected with grid zero line, silicon rubber heating plate wire connection terminal P2 and friendship No. 2 interfaces of stream compressor wiring terminal P3 are connected with internal circuit, can be indirectly connected through control with the firewire of power grid；U1 is super Small-sized AC220V-DC5V isolating switch powers chip, model HLK-PM01, No. 1 pin are connected with power grid firewire L, and No. 2 are drawn Foot is connected with grid zero line N, and No. 3 pins are grounded GND, and No. 4 pins meet VCC5 (output 5V voltages), No. 3 pins and No. 4 pins it Between connect the capacitance C1 filtering clutters of 10 μ F, after tested, the clutter peak value between No. 3 and No. 4 pins is less than 20mV, meets temperature control master The requirement of plate；U2 is 3.3V voltage stabilizing chips, and model AMS1117-3.3, No. 3 pins are connected with No. 4 pins of U1,1 Number pin is connected with No. 3 pins of U1, and No. 2 pins export 3.3V voltages, connected between No. 2 pins and ground GND 102 capacitance C2 and 220 μ F capacitances U3 are used for filtering clutter.

As shown in Figure 10, temperature sensor DS18B20 is connected by temperature acquisition interface with temperature control mainboard；Temperature acquisition connects No. 1 pin connection VCC3.3 of mouth, No. 2 pin DQ connections control No. 46 pin PB0 of chip U7, and No. 2 pins are pulled up through 4.7K Resistance R6 connections VCC3.3, No. 3 pin ground connection in use, can directly be assigned into 3pin terminals on interface, facilitate peace installation and dismantling It unloads.

As shown in figure 11, display module contains OLED display screen interface, and OLED display screen interface is 18pin interfaces, No. 1 Pin is grounded, and No. 2 pins connect VCC3.3, and 104 capacitance C5 are connected between No. 1 pin and No. 2 pins.Its No. 3 pins are total for I2C The clock line of line, No. 117 pins of connection control chip U7, No. 4 pins write reset line for FIFO, connection control chip U7's No. 122 pins, No. 5 pins are I2C data cables, and No. 128 pins of connection control chip U7, No. 6 pins are that FIFO degree is answered Bit line, No. 129 pins of connection control chip U7, No. 8 pins make energy line for FIFO, and No. 132 of connection control chip U7 are drawn Foot；7,10,9,12,11,14,13, No. 16 pins are OLED parallel ports data cable D0~D7, are connected respectively control chip U7 26,27,28,29,44,45,96,97 pins；Its No. 15 pins read clock line for FIFO, and connection controls No. 134 of chip U7 Pin, No. 17 pins are write for FIFO makes energy line, and No. 133 pins of connection control chip U7, No. 18 pin VSYNC are vertical Frame synchronization mouth, No. 100 pins of connection control chip U7.It in use, can be by the row of 0.96 cun of OLED display screen of ALENITEK Pin foot is directly inserted at display screen interface, OLED display screen can show temperature control mainboard chip STM32f103ZET6 with Packet loss quantity between the connection status of ENC28J60 Ethernet transceiving chips, equipment working state and serial data transmission.

As shown in figure 12, network connecting part, device server is by STM32f103ZET6 chips and ENC28J60 Ethernets Transceiving chip forms, and serial ports is switched to Ethernet interface.When user needs to carry out remote operation, sent for example to wechat public platform " field as Device001, TEMP20 ", wechat server receive such data, and device server and wechat After server authentication success, this character string is sent to device server by wechat server, and device server uses Ser.write sentences transmit this character string to temperature control mainboard chip STM32f103ZET6, then temperature control mainboard chip STM32f103ZET6 is with " form of Devicexxx, TEMPxxx " strictly unpack, and return to device server 0xFF instructions Representative receives successfully, if device server is not received by 0xFF instructions after 200ms, then it represents that packet loss；Meanwhile temperature control mainboard Chip STM32f103ZET6 receives the temperature data that DS18B20 is sent by one-wire buses, and device server passes through Temperature data is read and is stored in the data format of dictionary in MongoDB databases by ser.read sentences.When user needs When inquiring about current time and the in vivo temperature of historical juncture temperature control box, field can be sent to wechat public platform " Device001, Inquire about temperature ", this character string is sent to device server through wechat server, and program detects character string by regular expression In containing " Device ", " inquiry temperature " field, device server sends message " inquiry by wechat server to public platform Device001 Current Temperatures (now) or historical temperature (history) ", when user sends " now ", then device server passes through Ser.read reads the temperature at current time, and passes through wechat server and be sent to wechat public platform；When user sends When " history ", device server button " 001 " searches corresponding value, and value is also dictionary type, and key is the time, is worth for temperature Time and temperature value are sent to wechat public platform by angle value by wechat server.

As shown in figure 13, the operating personnel of remote control spin manifold temperature need not download APP, only need to pay close attention to wechat public platform, Input equipment number, temperature value in wechat public platform, wechat public platform transmit data to wechat server, and wechat server is led to It crosses interface URL and transmits data to device server ENC28J60 Ethernet transceiving chips, device server ENC28J60 ether Net transceiving chip sends the data to temperature control mainboard chip STM32f103ZET6, temperature control mainboard chip by serial ports For STM32f103ZET6 by pid algorithm, it is silicon-controlled so as to adjust the high temperature values of temperature control box or control to control silicon rubber heating plate Regulating circuit adjusts compressor and then adjusts the low-temperature values of temperature control box.Operating personnel can also be by wechat public platform to temperature control mainboard Control instruction is sent, while the Current Temperatures and historical temperature of temperature control babinet can be inquired about by wechat public platform.Control terminal contains There is wechat client, control terminal is sent to wechat server by wechat client and instructed.

Device server provides interface URL in Tthe utility model system, and wechat server is by GET modes to device service Device request data, GET request carry signature, timestamp, nonce, echostr parameters, and device server receives Token, tri- parameters of timestamp, nonce are subjected to dictionary sequence after parameter, and is spliced into a character string and carries out sha1 Encryption will obtain encrypted character string and be compared with signature, and identify the request from device server after wechat server Data exchange can be carried out with wechat server.Device server provides the interface URL for receiving and sending wechat data.

The serial ports of temperature control mainboard chip STM32f103ZET6 is connected with the chip CH340G serial port circuits formed, by serial ports Be converted into USB2.0 modes it is convenient be connected to computer debugged and the transmission of related html files, device server by STM32f103ZET6 chips are formed with ENC28J60 Ethernets transceiving chip.Temperature control mainboard chip STM32f103ZET6 passes through One-wire bus circuits are connected with the temperature sensor of model DS18B20, and temperature sensor is placed in babinet, for measuring The environment temperature of babinet；Temperature control mainboard contains OLED display connection circuits, can be used to install OLED display screen, OLED display screen is shown Show connection status and working state of system parameter, the power module in temperature control mainboard can be simultaneously device (the temperature control master in system Plate, silicon rubber heating plate and AC compressor) it is powered, the voltage which uses includes 220V alternating currents, 5V direct currents With 3.3V direct currents.

The utility model can by paying close attention to wechat public platform to specified equipment (experiment casing) set temperature value, and in real time Temperature data is sent on device server and is inquired about for user, while device server can store temperature control box in certain time The in vivo temperature value of case, user can inquire the process of temperature change in time period internal box.The utility model is used and is based on The internet connection mode of wechat platform breaks space limitation, can use the mobile phone of a networking to temperature control box into trip temperature Control.Family can be used to send control instruction to temperature control mainboard by wechat public platform for the utility model, while can be public by wechat The Current Temperatures and historical temperature of many numbers inquiry temperature control babinets.

Claims (8)

1. a kind of remote controlled temperature control system, it is characterised in that：Including the equipment clothes mutually communicated by internet Business device and wechat server, further include multiple reception terminals being connected with device server and pass through nothing with wechat server The control terminal of line network connection；The reception terminal includes babinet and the controller for regulating box temperature；The control Device processed includes temperature control mainboard and the solid-state relay control circuit and thyristor regulating volt circuit that are connected respectively with temperature control mainboard；Institute It states and heating unit and refrigerating plant is equipped in babinet；Wherein, the solid-state relay control circuit is connected with heating unit, described Thyristor regulating volt circuit is connected with refrigerating plant.

2. remote controlled temperature control system according to claim 1, it is characterised in that：It further includes and temperature control mainboard The power module and serial port circuit of connection, the in vivo heating unit of the case and refrigerating plant are powered by power module, described Temperature control mainboard is connected by serial bus with device server.

3. remote controlled temperature control system according to claim 1, it is characterised in that：The device server by Mainboard chip and Ethernet transceiving chip composition.

4. remote controlled temperature control system according to claim 1, it is characterised in that：It is additionally provided in the babinet Temperature sensor, the temperature sensor are connected with temperature control mainboard.

5. remote controlled temperature control system according to claim 1, it is characterised in that：The babinet is by double-deck iron Nickel alloy steel plate encloses, and aerogel blanket is filled between the double-deck iron nickel alloy steel plate.

6. remote controlled temperature control system according to claim 1, it is characterised in that：The heating unit is silicon Rubber-heating plate, the silicon rubber heating plate are located in babinet；The refrigerating plant is compressor, and the compressor is fixed on case On external side wall, the copper pipe of compressor is arranged in babinet.

7. remote controlled temperature control system according to claim 6, it is characterised in that：The solid-state relay control Contain optical coupling isolator in circuit processed, temperature control mainboard is heated after optical coupling isolator is isolated by solid-state relay and silicon rubber Plate is connected, and temperature control mainboard is by controlling the heating temperature of the folding control silicon rubber heating plate of solid-state relay.

8. remote controlled temperature control system according to claim 6, it is characterised in that：The thyristor regulating piezoelectricity Bidirectional triode thyristor and digital regulation resistance composition are route, temperature control mainboard is adjusted by thyristor regulating volt circuit in incoming transport compressor The voltage of motor.