CN201464933U - Networked temperature control device based on singlechip - Google Patents

Abstract

The utility model relates to a networked temperature control device based on the singlechip technology. The networked temperature control device comprises a casing and a power supply circuit, a man-machine interface circuit, a communication unit circuit, a signal output circuit, a data processing circuit and a warning circuit which are arranged in the casing, and is characterized in that a monitoring instrument is adopted to perform the measurement and control of the temperature of multiple terminals by perfectly combining the traditional temperature measuring and control technology with the sophisticated network technology and the telephone voice technology. The number of personnel on duty can be reduced, the manual operation environment is improved, the production efficiency is enhanced, and remote monitoring and remote voice alarming are realized. The networked temperature control device has the advantages of convenient use, high efficiency, economy, practicability and reliability and can satisfy the requirement of practical application in the field of temperature monitoring and control at present.

Description

SCM Based networked temperature monitor

Technical field

The utility model relates to a kind of temperature monitoring controller, is specifically related to a kind of networked temperature monitor-control apparatus based on singlechip technology.

Background technology

As everyone knows, at present in domain of control temperature, mainly be field control and artificial execute-in-place to equipment (as freezer, refrigerator-freezer etc.) temperature.And this stores factory for large-scale food storing processing, equipment is more and more, it is also more and more discrete to distribute, and need monitor in real time the temperature of each equipment, supervision and management and automatically control, single, independently the temperature monitoring control device can not adapt to the demand of suitability for industrialized production separately.Press for the long-range networked temperature supervising device of a plurality of device temperatures being realized Monitoring and Controlling of a kind of energy.Along with the high speed development of network technology, remote control technology emerges rapidly, realizes that by the communication technology remote detection control of temperature also becomes a kind of possibility.The temperature remote monitoring is meant adopts the networked temperature controller by communications network system, and the temperature of remote equipment is monitored and controls, and finishes functions such as diagnosis maintenance to the temperature control status monitoring control of dispersing apparatus and equipment, fault handling.Can realize the real-time collection of a plurality of device context running temperature data and concentrate fast obtaining the scene temperature data by means of networked temperature monitor, and show real time remote control in real time; By remote monitoring, the technician need not be in the action and just can monitor the also running status and the temperature parameter of opertaing device, with the normal operation of service equipment, thereby reduces staff on duty, finally realize the unmanned or few man on duty of far-end, reach the purpose of personnel reduction and enlargement.Existing networked temperature monitoring is adopted the upper computer software monitoring of computing machine mostly or is adopted lattice temperature sensor acquisition remote temperature monitor mode, adopt the independent monitor mode of computing machine host computer, the cost height, and people's technical skill personnel operation and Attended mode will be arranged; Adopt lattice temperature sensor acquisition Centralized Monitoring technology again, because the information acquisition circuit is long, environment has interference, has shortcomings such as temperature signal collection is inaccurate.The said temperature monitoring all can not realize dialing voice remote alarms function, the cost height, and automaticity is not high.

Summary of the invention

The purpose of this utility model overcomes above-mentioned weak point exactly, and a kind of networked temperature monitor controller based on singlechip technology is provided, and has the dual power supply pattern, and cost is lower, and temperature signal collection is accurate, advantages such as remote alarms.

The technical solution of the utility model is as follows:

A kind of SCM Based networked temperature monitor, comprise housing, be arranged on the hardware circuit in the described housing and the software that is solidificated on the hardware is formed, wherein said hardware circuit comprises power circuit, man-machine interface circuit, communication unit circuit, signal output apparatus, data processing circuit, telephone call circuit; Power circuit provides power supply for other circuit, described power circuit comprises single-phase linear transformer, the single-phase rectifier filtering circuit, battery feed and power management chip, described single-phase linear transformer output two-way power supply, one road power supply is for the communication unit circuit, another road power supply is for data man-machine interface circuit, data processing circuit and warning circuit. power circuit of the present utility model adopts electric main power supply and accumulator composite power supply mode, can be when civil power outage and fault, SCM Based networked temperature monitor can both operate as normal, improving the reliability and the applicability of monitoring temperature. the man-machine interface circuit comprises key circuit and display circuit, by the running parameter of button setting device; Display circuit shows correlation behavior information by the character mode lcd display screen; Communicating circuit of the present utility model adopts semiduplex RS485 serial ports and two kinds of communication modes of RS232 serial ports, can realize carrying out networking by the RS485 serial ports with the multiple terminals temperature acquisition control device, the temperature data and the state of real-time acquisition terminal equipment, and can send steering order to terminal device, finish exchanges data and realize temperature controlled integrated, networking and intelligent management; Being connected of monitoring instrument and computing machine can be realized by the RS232 serial ports, computer monitoring can be realized by monitoring software on the machine of position on computers; RTU (remote terminal unit) is provided with temperature sensor, temperature sensor inserts monitoring instrument by the RS485 serial ports, out-of-limit or occur when unusual when the temperature of RTU (remote terminal unit), monitoring instrument decides the startup warning circuit according to the correlation parameter of setting, when the RTU (remote terminal unit) temperature occurs when unusual, can be to the telephone number of the setting audio alert that dial, thus realized the remote phone warning function.

The utility model adopts single-chip microcomputer for the control core, realizes each functional module by software programming.Software comprises key command module, display module, communication module and function of tonic chord processing module; The key command module mainly is that input button or instruction are detected scanning; Digital sampling and processing, telephone phonic alarm module, communication module adopt semiduplex RS485 serial ports and two kinds of communication modes of RS232 serial ports, realize the networking and the intelligent computer management TT﹠C system of described monitor; The display part adopts wide temperature, highlighted character mode lcd to show; The temperature data processing is mainly finished in the major function processing section, external event is analyzed, responded and handle, reports to the police, and manages all input-output units of whole monitor.

Compare with existing temperature detection-control technology, the beneficial effects of the utility model are: changed traditional temperature control mode, with combining of traditional temperature detection-control technology and advanced network technology, call voice technological perfectionism, adopt monitor to realize observing and controlling, can reduce the duty personnel, improve the manual work environment, enhance productivity, realize remote monitoring, remote speech reports to the police a plurality of terminal temperatures.This product is used for temperature control, can also be used for measurement and control areas such as humidity observing and controlling, environment, also can be used for the occasion of the artificial site work observing and controlling of inconvenience.The utlity model has easy to use, efficient, economic and reliable.

Description of drawings

Further specify the utility model below in conjunction with the drawings and specific embodiments.

Fig. 1 is a general structure block scheme of the present utility model.

Fig. 2 is a products panel synoptic diagram of the present utility model.

Fig. 3 is the rear view of product of the present utility model.

Fig. 4 is the networking mode synoptic diagram that communicates to connect of the present utility model.

Fig. 5 is an AC power power supply power pack electrical schematic diagram of the present utility model.

Fig. 6 fills the power pack electrical schematic diagram for the power supply of the utility model accumulator.

Fig. 7 is the part electrical schematic diagram of the utility model analog telephone dial feature.

Fig. 8 is the utility model communication unit part electrical schematic diagram.

Fig. 9 a-Fig. 9 d is that the SCM Based networked temperature monitor of the utility model monitors the demonstration synoptic diagram.

Embodiment

For the ease of the utility model is further understood, make technological means, creation characteristic that the utility model realizes, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

With reference to Fig. 1, the utility model comprises MCU key control unit and each modular circuit unit, and the MCU key control unit adopts Chip Microcomputer A tmega16 to realize; Power unit adopts single-phase linear transformer of dual output and 6V chargeable storage to form dual power supply; Communication unit carries out the RS485 serial communication modular of exchanges data; The part of reporting to the police is made up of dialing chip HT9200 and speech chip ISD1420; Storage chip adopts the 24CL16 storage chip; Clock chip adopts RX8025; Liquid crystal display is made up of display control chip and power supply power pack, but character display information.

Referring to Fig. 2, the utility model housing front is provided with a LCDs 1 and power supply 1 pilot lamp 2, power supply 2 pilot lamp 3, alarm lamp 4, communicate by letter pilot lamp 5. display screen display terminal temperature and design temperature and relevant information; When power supply 1 pilot lamp 2 was bright, the power supply of expression civil power AC220V power supply was normal, otherwise does not then have mains powered; The bright degree of power supply 2 pilot lamp 3, the electric energy of expression accumulator, the brightest expression accumulator electric energy abundance, otherwise expression accumulator electric energy deficiency are extinguished and are then represented not store electrical energy or occur unusual of accumulator; During alarm lamp 4 flickers, telephone call is carried out in expression, on the contrary alarm free incident then working properly; During alarm lamp 5 flickers, expression is being carried out exchanges data with remote terminal measurement and control of temperature system unit and is being communicated by letter, otherwise then there is not communication. hummer 6 sends and sends caution sound when alert event occurring, and anti regular does not ring. and button 7 uses when carrying out parameter setting and programming for programming is provided with button; Button 8 is hand/adaptive switched button, presses and can realize manual switching; Button 9 is the test button, but whether test macro work normally reaches test telephone reports to the police; Button 10 increases key for parameter, and finishing parameter increases function; Button 11 reduces key for parameter, finishes parameter and subtracts function; Button 12 is a cancel key, under alarm condition, can cancel warning, under parameter is provided with state, can withdraw from menu.

Referring to Fig. 3, housing is provided with connection terminal A, B, the COM of RS485 serial communication interface; RS232 serial ports serial ports 9 needle interfaces; Telephone wire wiring seat port; Power supply wiring mouth and switch, fusing safety box.Connection terminal A, B, COM that RS485 serial communication interface is set are so that monitor and a plurality of remote terminal measurement and control of temperature unit carry out networking.During concrete networking, can be by shielding line and impedance matching resistance R with several terminal temperature measurement and control units with linear connected mode networking (referring to Fig. 4), about 120 Ω of the resistance of wherein impedance matching resistance R.The mode of connection of the present utility model adopts two-wire system (RS485 serial ports A, RS485 serial ports B), Shielded Twisted Pair networking.The communication work mode is half-duplex, and the fast baud rate of communicating by letter is 9600bps, and 32, one monitors of recommended node capacity can be monitored 247 station terminal equipment at most, the MODBUS-RTU communications protocol of employing.Adopt RS232 serial ports serial communication line to connect when being connected with host computer, can set communication baud rate, this function is the apolegamy module.

Referring to Fig. 5, ac power supply partly comprises a single-phase dual output linear transformer, D1～D2, D3～D4 rectification circuit, and power management chip, filtering circuit is formed jointly.Wherein alternating current 220V is through single-phase linear transformer step-down, and output two-way voltage is again behind current rectifying and wave filtering circuit, power management chip, and one the tunnel uses for RS485 serial communication loop; Other one road power supply is for charge in batteries, single-chip microcomputer, liquid crystal display and other circuit practicalities.Power supply power pack of the present utility model communication and main control module be power supply separately, can guarantee the networked temperature monitor operate as normal, and realizes that the two-way power supply isolates mutually, avoids the phase mutual interference of the two, thereby improves the anti-interference of system.The utility model also adopts accumulator standby power supply power supply, and referring to Fig. 6, accumulator uses as standby power supply, under the normal situation of civil power, civil power through power management chip U3, filtering circuit to charge in batteries; In case civil power outage or when breaking down, accumulator is powered as standby power supply, storage battery power supply is realized automaticallying switch through relay, be specially: accumulator output end is succeeded the electrical equipment normally closed contact, mains supply is succeeded the electrical equipment normally opened contact, and relay control coil connects city's piezoelectric transformer rectification output, when civil power outage or fault, relay normally closed contact closure, accumulator is powered to system; Civil power just often, the actuating of relay, normally closed contact disconnects, the normally opened contact closure realizes that civil power powers to system.This design circuit provides the functional reliability and the dirigibility of system.

Referring to Fig. 7, adopt dialing chip HT9200 to realize the telephone call dial feature, by simulation off-hook (DAIL) circuit that triode Q1, Q3 and resistance circuit are formed, finish handoff functionality before the dialing; By the analog telephone dial-up circuit that dialing chip HT9200 and triode Q2, resistance, crystal oscillator are formed, when reporting to the police, finish dialing by the number of setting, realize telephone phonic alarm.

Referring to Fig. 8, telecommunication circuit adopts chip 74LBC184 to finish 485 group-net communication functions; Chip MAX232 finishes the communication function with the computing machine host computer.

The demonstration of SCM Based networked temperature monitor of the present utility model is described below in conjunction with Fig. 9 a to Fig. 9 d.

By default, the demonstration Automatic Cycle of networked temperature monitor of the present utility model shows the device address numbering, design temperature of each equipment, measures temperature information in real time, the circulation display time intervals is 5s, and liquid crystal display content and data layout are described as follows:

Fig. 9 a displaying contents represents that current watch-dog address is 01, and Automatic Cycle monitor mode, apparatus settings temperature are 20.8 ℃, and current real-time measurement temperature is 20.8 ℃.

Fig. 9 b shows that the current watch-dog of expression address is 01, manual circularly monitoring mode not, and the apparatus settings temperature is 20.8 ℃, current real-time measurement temperature is 20.8 ℃.

Fig. 9 c shows that the current watch-dog of expression address is 01, and Automatic Cycle monitor mode, apparatus settings temperature are 20.8 ℃, and current real-time measurement temperature is 25.8 ℃.Following row's display message " Tel " expression telephone call, " C " represents heating, " F " represents air-supply.

Fig. 9 d displaying contents is represented RS485 serial communication mistake.

More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.

Claims (5)

1. SCM Based networked temperature monitor, form by housing and the hardware circuit and the software that are arranged in the described housing, wherein said hardware circuit comprises power circuit, man-machine interface circuit, signal output apparatus, control module, wherein power circuit is whole hardware circuit power supply, the man-machine interface circuit connects and transmits signal in control module, it is characterized in that hardware circuit also comprises communication unit circuit and warning circuit, control module is connected with the communication unit circuit and transmits signal mutually, and control module connects and transmits signal in warning circuit.

2. SCM Based networked temperature monitor as claimed in claim 1, it is characterized in that described power circuit adopts electric main power supply and accumulator composite power supply mode, power circuit comprises single-phase linear transformer, single-phase commutating phase filtering circuit, battery feed and power management chip, described single-phase linear transformer output two-way power supply, one road power supply is for the communication unit circuit, and another road power supply is for data man-machine interface circuit, control module and warning circuit.

3. SCM Based networked temperature monitor according to claim 1 and 2, the communication serial ports that it is characterized in that described communication unit circuit has adopted RS485 serial ports and RS232 serial ports, the RS485 serial ports is connected with the networking of a plurality of terminal temperature acquisition control device, and the RS232 serial ports is connected with the host computer that monitoring software is housed.

4. according to claim 1 or 2 described SCM Based networked temperature monitors, it is characterized in that, on described housing, also be provided with telephone line interface, so that be connected with telephone wire, realize telephone call, the warning dial-up circuit is formed the dial feature of analog telephone by dialing chip HT9200 and triode, resistance circuit.

5. SCM Based networked temperature monitor according to claim 1, it is characterized in that power unit adopts single-phase linear transformer of dual output and 6V chargeable storage to form dual power supply, the part of reporting to the police is made up of dialing chip HT9200 and speech chip ISD1420.

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