CN101178985A - Automatic change-over and control method with self-diagnosis output function - Google Patents

Abstract

The invention relates to an automatic switch with self-diagnosis output function and a controlling method. The invention consists of a single-chip, a screen display and a key-press; the screen display and the key-press are connected with the input / output of the single-chip respectively. The invention also consists of two optical couplers, a resistance and a relay; two output ends of the single-chip are connected with two optical couplers respectively though the resistance, and the input ends of two optical couplers are connected with the earth respectively; the output ends of the collectors of the optical couplers are connected serially with a relay coil, and the end of the coil is connected with a plus end of the working power of the relay; the emitter output ends of the two optical couplers are connected with the earth respectively; normal open contacts of the two relays are the contacts of the output signal respectively. The invention has the self-diagnosis output function and switch state information is added by the automatic switch and the definition of the two contacts outputs is elected and set by the users, so besides the invention is convenience for the users; the invention greatly improves the degree of automation and informatization of automatic switch in the distribution system.

Description

Automatic change-over and control method with self-diagnosis output function

Technical field

The invention belongs to a kind of intelligent electric element, particularly relate to a kind of automatic change-over and control method with self-diagnosis output function.

Background technology

Modern industrialization has proposed very high requirement to the reliability and the intelligent management thereof of operation of power networks, increasing substantially of the extensive use of microprocessing and computer system security, promoted developing rapidly of intelligent electric appliance element, intelligentized low-voltage distribution system is then arisen at the historic moment.Thereby automated system safety such as grid automation, factory automation, process control automation, intelligent building, reliable, economic operation have been guaranteed.Exploitation and industrialization as the intellectuality of industrialization, informationalized basic device, the automatic change-over that can communicate by letter are very important.At present, though there is the part automatic change-over to have the branch state that closes that communication function still only limits to upload power source voltage state and switch, far can not satisfy the needs of Intelligent Low Voltage Distribution System.

Summary of the invention

The present invention provides a kind of automatic change-over with self-diagnosis output function and control method that increases self diagnosis output for solving the technical problem that exists in the known technology.

The technical scheme that the present invention takes for the automatic change-over that solves the technical problem that exists in the known technology and have self-diagnosis output function is: it includes single-chip microcomputer, screen display and button; The input of described screen display connects the output of single-chip microcomputer, and the output of button connects the input of single-chip microcomputer, and it also includes two optocouplers, two resistance and two relays; Two output ports of described single-chip microcomputer are connected with the input of two optocouplers by two resistance respectively, and another input of two optocouplers is ground connection respectively; The collector output of two optocouplers is each and the coil tandem of a relay respectively, and the other end of coil is succeeded the anode of electrical work power supply; The emitter output of two optocouplers is ground connection respectively; Two relays normally opened contact separately is the contact of output signal.

The technical scheme that the present invention takes for the control method that solves the technical problem that exists in the known technology and have the automatic change-over of self-diagnosis output function is: it includes other control programs of single-chip microcomputer, and it also includes following self diagnosis Output Control Program:

When program brings into operation, the situation that is provided with of contact output function will be detected, system takes default setting if nothing is changed then, and these data are preserved, and further judge whether to exist set situation, in case the so corresponding contact of the incident identical with set situation takes place with closure in the program operation process, remind the user that this incident has taken place, if do not have the generation incident identical with set situation so program return normal operation.

Advantage and good effect that the present invention has are: the automatic change-over with this function has two groups of independently self diagnosis contact outputs, and its function is programmable, can be provided with by communication function or User Agreement.The contact output function that is provided is: single-chip microcomputer self diagnosis fault, process control fault, action pre-alarm, programmable load Control Node, stand-by power supply monitoring.Automatic change-over with this function has not only increased on off state information, and the definition of two contact outputs is that the user can select to be provided with voluntarily, in the user friendly while, improved the automation and the level of informatization of automatic change-over place distribution system greatly.

Description of drawings

Fig. 1 is circuit theory diagrams of the present invention;

Fig. 2 is a control flow chart of the present invention.

Embodiment

For further understanding content of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

As shown in Figure 1, the input of screen display links to each other with the output/input of single-chip microcomputer respectively with the output of button, and output I/O1, the I/O2 of single-chip microcomputer links to each other with the input of optocoupler UO1 and UO2 by resistance R 1, R2 respectively.Collector output one end of optocoupler UO1 and UO2 links to each other the other end of relay 1 and relay 2 coils and the anodal V of working power with an end of the coil of relay 1 and relay 2 respectively _CcLink to each other.The emitter output of optocoupler UO1 and UO2 joins with ground GND.Normally opened contact 3 separately and 4 of relay 1 and relay 2 is the self diagnosis signal output part.

As shown in Figure 2, the self diagnosis control flow of single-chip microcomputer is: at first detect the situation that is provided with to the circuit breaker function after the beginning; Send single-chip microcomputer E with function setting situation corresponding parameters again ²PROM preserves; And further judge whether to exist the situation of function setting according to the circuit-breaker status signal of input; If have then to contact 3 and 4 output control signals and returning; If not then directly return.

Single-chip microcomputer is controlled relay 1 and relay 2 by optocoupler UO1 and UO2, and defines the implication of each node by software.Definition contact 3 and 4 output state control units in program, the state of the numerical value decision contact output of this unit.Table 1 is contact 3 and the 4 pairing contact of the control unit set point output states corresponding to contact output 1 and contact output 2.

	Contact output 1	Contact output 2	Remarks
				0000	Single-chip microcomputer self diagnosis fault	The process control fault	Default conditions
0001	Single-chip microcomputer self diagnosis fault	The action pre-alarm
				0010	Single-chip microcomputer self diagnosis fault	Programmable load control
0011	Single-chip microcomputer self diagnosis fault	The stand-by power supply monitoring
				0100	The action pre-alarm	The process control fault
0101	Programmable load control	The process control fault
				0110	The stand-by power supply monitoring	The process control fault
0111	Programmable load control	The action pre-alarm
				1000	The stand-by power supply monitoring	The action pre-alarm
1001	The stand-by power supply monitoring	Programmable load control

Claims (2)

1. automatic change-over with self-diagnosis output function, it includes single-chip microcomputer, screen display and button; The input of described screen display connects the output of single-chip microcomputer, and the output of button connects the input of single-chip microcomputer, it is characterized in that: further comprising two optocouplers are arranged, two resistance and two relays; Two output ports of described single-chip microcomputer are connected with the input of two optocouplers by two resistance respectively, and another input of two optocouplers is ground connection respectively; The collector output of two optocouplers is each and the coil tandem of a relay respectively, and the other end of coil is succeeded the anode of electrical work power supply; The emitter output of two optocouplers is ground connection respectively; Two relays normally opened contact separately is the contact of output signal.

2. control method with automatic change-over of self-diagnosis output function, it includes other control programs of single-chip microcomputer, and it is characterized in that: further comprising has following self diagnosis Output Control Program:

When program brings into operation, the situation that is provided with of contact output function will be detected, system takes default setting if nothing is changed then, and these data are preserved, and further judge whether to exist set situation, in case the so corresponding contact of the incident identical with set situation takes place with closure in the program operation process, remind the user that this incident has taken place, if do not have the generation incident identical with set situation so program return normal operation.

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