CN202257324U

CN202257324U - Centralized electro-thermal controller

Info

Publication number: CN202257324U
Application number: CN2011203890736U
Authority: CN
Inventors: 刘利民
Original assignee: Huzhou University
Current assignee: Huzhou University
Priority date: 2011-10-13
Filing date: 2011-10-13
Publication date: 2012-05-30
Anticipated expiration: 2021-10-13

Abstract

The utility model discloses a centralized electro-thermal controller, which comprises a control circuit, an RS232 interface circuit, a digital temperature sensor and a relay circuit, wherein the digital temperature sensor is connected to the input end of the control circuit; the relay circuit is connected to the output end of the control circuit; and the RS232 interface circuit is connected to the serial port of the control circuit. The centralized electro-thermal controller can finish control over heating and heat preservation of a heated object, has a simple structure, high controllability, high practicability and higher control precision, has serial communication capacity, is low in cost, does not have display, facilitates the low-cost centralized management of a user and is applicable to various occasions having requirements for centralized control over heating and heat preservation, in particular to occasions, such as hospitals, kindergartens, gerocomium, low-temperature work and the like, which have requirements for control over warm clothes, foods and other objects.

Description

A kind of centralized-control type electric controller

[technical field]

The utility model relates to intelligent electric controller; More particularly it is to adopt microcontroller and digital temperature sensor technology, accomplishes the control to electrothermal mechanism, realizes the control device of heating automatically and insulation.

[background technology]

There is following deficiency in the electric controller that generally adopts at present:

1. do not adopt the digital temperature sensor technology, the temperature signal precision is not high.

2. do not possess feedback control function, can not realize preservation and controlling.

3. do not adopt the microcontroller technology, controller is intelligent not strong.

4. the integrated control functions that does not have timing, heat-insulating integral.

For addressing the above problem, it is 201020144351.7 that the applicant has proposed the patent No., and name is called a kind of intelligent electric controller patented claim; And in Granted publication on October 20th, 2010, this controller can overcome the deficiency of above-mentioned prior art, and providing a kind of is the basis with the embedded system technology; Have self-timing heating and preservation and controlling, control accuracy is higher, good reliability; Practical, simple in structure intelligent electric controller.

Though can realize self-timing heating and preservation and controlling through the intelligent electric controller after the applicant's improvement, owing to install LCD display additional, cost is higher, does not possess serial communications capabilities, can not satisfy the low-cost demand of not having the demonstration centralized control system of user.

[utility model content]

The purpose of the utility model solves the problems of the prior art exactly, proposes a kind of centralized-control type electric controller, displayless, and low cost possesses serial communications capabilities, can satisfy the demand that the user realizes low-cost collection keyholed back plate reason.

For realizing above-mentioned purpose; The utility model provides a kind of centralized-control type electric controller; Comprise control circuit, RS232 interface circuit, digital temperature sensor and relay circuit; Said digital temperature sensor is connected to the input end of control circuit, and relay circuit is connected to the output terminal of control circuit, is connected with the RS232 interface circuit on the serial port of control circuit.

As preferably, said control circuit is made up of microcontroller, and is simple in structure, and cost is low.

As preferably, said microcontroller is the 80C51 chip, and is simple in structure, and cost is low.

As preferably, said RS232 interface is made up of the RS232 integrated circuit, and simple in structure, cost is low.

As preferably, said RS232 integrated circuit is the MAX232 chip, and simple in structure, cost is low.

As preferably, said digital temperature sensor is made up of the thermometric integrated circuit, and is simple in structure, and cost is low.

As preferably, said thermometric integrated circuit is the DS18B20 chip, and simple in structure, cost is low.

As preferably, said relay circuit is made up of triode and relay, and circuit is simple, controls effective.

The beneficial effect of the utility model: the utility model can be accomplished the heating that is heated object and the control function of insulation, and simple in structure, cost is lower; Controllability is good; Practical, control accuracy is higher, and displayless; Possesses serial communications capabilities; Be convenient to the user and realize low-cost collection keyholed back plate reason, be applicable to the multiple occasion that heat tracing centralized control demand is arranged, being particularly useful for hospital, kindergarten, the home for the aged, low temp operation etc. has the occasion of demand to controlling warm clothing, food and other article.

Characteristic of the utility model and advantage will combine accompanying drawing to be elaborated through embodiment.

[description of drawings]

Fig. 1 is the theory diagram of a kind of centralized-control type electric controller of the utility model;

Fig. 2 is the circuit theory diagrams of a kind of centralized-control type electric controller of the utility model.

[embodiment]

As shown in Figure 1; The centralized-control type electric controller; Comprise control circuit 2, RS232 interface circuit 4, digital temperature sensor 1 and relay circuit 3; Said digital temperature sensor 1 is connected to the input end of control circuit 2, and relay circuit 3 is connected to the output terminal of control circuit 2, is connected with RS232 interface circuit 4 on the serial port of control circuit 2.

As shown in Figure 2; The input end that control circuit 2 is connected with digital temperature sensor 1 (DS18B20 chip) through its microcontroller 80C51; Read in the temperature information that is heated object, determine whether to heat or stop heating operation according to the program of microcontroller inside; Digital temperature sensor 1 (DS18B20 chip) is accepted the signal from hygrosensor spare, converts numerical information to, sends microcontroller to; When temperature is lower than setting value, microcontroller is in the automatic heat preserving state, then directly carries out heating operation; When temperature is lower than setting value, microcontroller is in regularly heated condition, then need wait for and carry out heating operation when timing condition possesses; When temperature is higher than setting value, microcontroller stops heating operation control; The switch of relay is used to control the on/off of electrothermal mechanism, realizes the work of electrical heating operation or stops; The control that microcontroller 80C51 accomplishes heating automatically and stops to heat the switching manipulation of relay circuit 3 through I/O mouth P1.0, thus realize heating automatically and the control function that is incubated.Control circuit 2 can be accepted external command information through RS232 interface circuit 4, carries out corresponding information management.Adopt single power supply Vcc, direct current+5V in the utility model.

The foregoing description is the explanation to the utility model, is not the qualification to the utility model, any protection domain that scheme after the utility model simple transformation is all belonged to the utility model.

Claims

1. centralized-control type electric controller; It is characterized in that: comprise control circuit, RS232 interface circuit, digital temperature sensor and relay circuit; Said digital temperature sensor is connected to the input end of control circuit; Relay circuit is connected to the output terminal of control circuit, is connected with the RS232 interface circuit on the serial port of control circuit.

2. a kind of centralized-control type electric controller as claimed in claim 1, it is characterized in that: said control circuit is made up of microcontroller.

3. a kind of centralized-control type electric controller as claimed in claim 2 is characterized in that: said microcontroller is the 80C51 chip.

4. a kind of centralized-control type electric controller as claimed in claim 1 is characterized in that: said RS232 interface is made up of the RS232 integrated circuit.

5. a kind of centralized-control type electric controller as claimed in claim 4 is characterized in that: said RS232 integrated circuit is the MAX232 chip.

6. a kind of centralized-control type electric controller as claimed in claim 1, it is characterized in that: said digital temperature sensor is made up of the thermometric integrated circuit.

7. a kind of centralized-control type electric controller as claimed in claim 6 is characterized in that: said thermometric integrated circuit is the DS18B20 chip.

8. like each described a kind of centralized-control type electric controller in the claim 1～7, it is characterized in that: said relay circuit is made up of triode and relay.