CN201130317Y

CN201130317Y - Control apparatus for input/output interface circuit of air conditioner single-chip

Info

Publication number: CN201130317Y
Application number: CNU2007200420713U
Authority: CN
Inventors: 赵恩英; 宋伟; 张起云; 王辉
Original assignee: Suzhou Samsung Electronics Co Ltd
Current assignee: Suzhou Samsung Electronics Co Ltd
Priority date: 2007-12-05
Filing date: 2007-12-05
Publication date: 2008-10-08
Anticipated expiration: 2017-12-05

Abstract

The utility model relates to an input-output interface circuit control device of an air conditioner single-chip microcomputer, comprising a single-chip microcomputer, an LED display, a program module selection control circuit with a program control unit and a key control circuit with j keys, which is characterized in that: the input-output interfaces numbered 1 to n of the single-chip microcomputer are connected with the n signal input ports of the LED display through electrical signals; the input-output interfaces numbered n plus 1 to n plus k of the single-chip microcomputer are grounded through resistors; the two ends of the program control unit and the two ends of the keys are electrically connected with one of the input-output interfaces numbered 1 to n of the single-chip microcomputer and one of the input-output interfaces numbered nplus1 to n plus k of the single-chip microcomputer; at most one end of the two ends of any two original parts in the keys and the program control unit is electrically connected with the input-output interface of the same single-chip microcomputer, and (I plus j)/k is less than or equal to n. The single-chip microcomputer interfaces numbered 1 to n provide input signals to the program control unit and the key detection circuit, saving the interfaces of the single-chip microcomputer and improving the utilization ratio of single-chip microcomputer interfaces.

Description

Air conditioner single-chip microcomputer input/output interface circuit control device

Technical field

The utility model relates to a kind of air conditioner single-chip microcomputer input/output interface circuit control device, belongs to the circuit control device technical field.

Background technology

At present, light-emitting diode display in the air conditioner (LED DISPLY), program module are selected control circuit, and (program module selects control circuit to comprise a plurality of procedure control units, wherein procedure control unit can be made up of circuit such as diode, resistance, and its effect is to be used for selecting the distinct program control module), the function of key control circuit and key press detecting circuit all is to drive by the single-chip processor i/o mouth to realize.As shown in Figure 1, be a kind of existing air conditioner single-chip microcomputer input/output interface circuit control device circuit diagram, its program module selects control circuit to comprise 8 procedure control units, this procedure control unit is a diode, its key control circuit includes 6 buttons, the circuit connecting mode of circuit control device is as follows: be connected with data line (D1 to D7) electric signal by 7 between No. 1 to No. 7 IO interface I/O-1 to I/O-7 of single-chip microcomputer and the LED DISPLY, No. 1 procedure control unit (OP1) to the anode of No. 8 procedure control units (OP8) is connected with No. 8 IO interface of single-chip microcomputer (I/O-8) to No. 11 IO interface (I/O-11) electric signal respectively, negative electrode is connected electrical connection with No. 15 IO interface of single-chip microcomputer (I/O-15) to No. 16 IO interface (I/O-16) electric signal, six press keys (SW101 to SW106) in the key control circuit, one end is connected with No. 12 IO interface of single-chip microcomputer (I/O-12) to No. 14 IO interface (I/O-14) electric signal respectively, the other end is connected electrical connection with No. 15 IO interface of single-chip microcomputer (I/O-15) to No. 16 IO interface (I/O-16) electric signal, No. 16 IO interface of No. 15 IO interface of single-chip microcomputer (I/O-15) and single-chip microcomputer (I/O-16) ground connection behind a current-limiting resistance.Such circuit connecting mode, need 16 single-chip microcomputer IO interface just can finish the function of LED DISPLY, program module selection control circuit, key control circuit and key press detecting circuit, spent considerable single-chip microcomputer IO interface, limit the quantity of usable interface, can not satisfy the needs of at present increasingly sophisticated ac control circuit.

Summary of the invention

The purpose of this utility model is: at the main weak point of above existing equipment existence, a kind of air conditioner single-chip microcomputer input/output interface circuit control device is proposed, it can utilize minimum single-chip microcomputer IO interface to realize light-emitting diode display, and program module is selected control circuit, key control circuit, reached key press detecting circuit.

In order to reach the above object: air conditioner single-chip microcomputer input/output interface circuit control device of the present utility model, comprise singlechip CPU, light-emitting diode display LED DISPLY, have the program module selection control circuit of i procedure control unit and key control circuit with j button, be connected with n signal input electric signal of light-emitting diode display with the signal data line by n to the n IO interface No. 1 of described single-chip microcomputer, its improvements are: single-chip microcomputer n+1 number to the n+k IO interface respectively through resistance R 1, R2, ... Rk ground connection, the two ends of procedure control unit, the two ends of button all respectively with No. 1, single-chip microcomputer to one of n IO interface, one of single-chip microcomputer n+1 number and n+k IO interface are electrically connected, have only an end to be electrically connected in the two ends of any two original papers in procedure control unit and the button at most with same single-chip microcomputer IO interface, symbol i, j, n, k is the natural number greater than 1, and satisfies inequality (i+j)/k≤n.

The beneficial effects of the utility model are as follows: in the utility model circuit control device, provide the signal input for light-emitting diode display to n single-chip microcomputer IO interface No. 1, in addition, this n interface microcontroller is also selected i the procedure control unit in the control circuit and the testing circuit of j button in the key control circuit for program module input signal is provided, be used for the detection that i procedure control unit and j key circuit have or not actuating signal to the n+k IO interface n+1 of single-chip microcomputer number, the utility model circuit control device is shared, and n+k single-chip microcomputer IO interface just realized light-emitting diode display, program module is selected control circuit, key control circuit, and the function of key press detecting circuit, save a plurality of single-chip microcomputer IO interface than traditional circuit control device, improved the utilization factor of single-chip microcomputer IO interface greatly.

Description of drawings

Fig. 1 is the circuit diagram of existing air conditioner single-chip microcomputer input/output interface circuit control device.

Fig. 2 is the circuit diagram of the utility model air conditioner single-chip microcomputer input/output interface circuit control device embodiment 1.

Embodiment

In order to understand innovation essence of the present utility model better, the utility model is described in detail below in conjunction with the embodiment accompanying drawing.

Embodiment 1:

The utility model air conditioner single-chip microcomputer input/output interface circuit control device as shown in Figure 2, comprise singlechip CPU, light-emitting diode display LED DISPLY, have the program module selection control circuit (OPTION) of 8 procedure control units (OP1 to OP8) and key control circuit (KEY SWTCPUH) with 6 buttons (SW101 to SW106), No. 1 to No. 7 IO interface I/O-1 to I/O-7 of described single-chip microcomputer is connected with 7 signal inputs (J1 to J7) electric signal of light-emitting diode display with data line (D1 to D7) by 7, its improvements are: No. 8, single-chip microcomputer, No. 9 IO interface I/O-8, I/O-9 is respectively through resistance R 2, R1 ground connection, the two ends of procedure control unit, the two ends of button all respectively with one of No. 1 IO interface I/O-1 to 7 of single-chip microcomputer IO interface I/O-7, one of No. 8 IO interface I/O-8 of single-chip microcomputer and No. 9 IO interface I/O-9 are electrically connected, and have only an end to be electrically connected with same single-chip microcomputer IO interface in the two ends of any two original papers in procedure control unit and the button at most.In the present embodiment as shown in Figure 2, procedure control unit is a diode, No. 1, No. 2 procedure control unit OP1, No. 1 IO interface I/O-1 of the anode of OP2 and single-chip microcomputer is electrically connected, No. 3, No. 4 procedure control unit OP3, No. 2 IO interface I/O-2 of the anode of OP4 and single-chip microcomputer are electrically connected, No. 5, No. 6 procedure control unit OP5, No. 3 IO interface I/O-3 of the anode of OP6 and single-chip microcomputer are electrically connected, No. 7, No. 8 procedure control unit OP7, No. 4 IO interface I/O-4 of the anode of OP8 and single-chip microcomputer are electrically connected, No. 1, No. 3, No. 5, No. 7 procedure control unit OP1, OP3, OP5, No. 9 IO interface I/O-9 of the negative electrode of OP7 and single-chip microcomputer are electrically connected, No. 2, No. 4, No. 6, No. 8 preface control module OP2, OP4, OP6, No. 8 IO interface I/O-8 of the negative electrode of OP8 and single-chip microcomputer are electrically connected, in the described key control circuit, the two ends of No. 1 button SW101 respectively with No. 5, single-chip microcomputer, No. 9 IO interface I/O-5, I/O-9 is electrically connected, the two ends of No. 2 button SW102 respectively with No. 5, single-chip microcomputer, No. 8 IO interface I/O-5, I/O-8 is electrically connected, the two ends of No. 3 button SW103 respectively with No. 6, single-chip microcomputer, No. 9 IO interface I/O-6, I/O-9 is electrically connected, the two ends of No. 4 button SW104 respectively with No. 6, single-chip microcomputer, No. 8 IO interface I/O-6, I/O-8 is electrically connected, the two ends of No. 5 button SW105 respectively with No. 7, single-chip microcomputer, No. 9 IO interface I/O-7, I/O-9 is electrically connected, the two ends of No. 6 button SW106 respectively with No. 7, single-chip microcomputer, No. 8 IO interface I/O-7, I/O-8 is electrically connected.

Resistance R 1, R2 play the effect of current limliting, prevent that light-emitting diode display from burning out, and R1, R2 set according to the power of light-emitting diode display, belong to the technology that those skilled in the art should grasp.

As can be seen from Figure 2, No. 1 to 2 objects of No. 4 single-chip microcomputer IO interface (I/O-1 to I/O-4) control: light-emitting diode display and 8 procedure control units; Control 2 objects equally to No. 7 single-chip microcomputer IO interface (I/O-5 to I/O-7) No. 5: light-emitting diode display and 6 buttons.Also have 2 single-chip microcomputer IO interface I/O-8 and I/O-9 to have or not the detection of actuating signal to use as 8 procedure control units and 6 key circuits.

Except embodiment 1, realize that circuit control device of the present utility model can have a lot of situations, as long as satisfying in the two ends of any two original papers in procedure control unit and the button has only an end to be electrically connected with same single-chip microcomputer IO interface at most, just can realize the utility model, and the single-chip microcomputer IO interface that is used for signal monitoring can be 1,2,3, even more.

Therefore, generally speaking, this air conditioner single-chip microcomputer input/output interface circuit control device, comprise singlechip CPU, light-emitting diode display LED DISPLY, have the program module selection control circuit of i procedure control unit and key control circuit with j button, be connected with n signal input electric signal of light-emitting diode display with the signal data line by n to the n IO interface No. 1 of described single-chip microcomputer, its improvements are: single-chip microcomputer n+1 number to the n+k IO interface respectively through resistance R 1, R2, ... Rk ground connection, described program module is selected in the control circuit, the two ends of procedure control unit, the two ends of button all respectively with No. 1, single-chip microcomputer to one of n IO interface, one of single-chip microcomputer n+1 number and n+k IO interface are electrically connected, have only an end to be electrically connected in the two ends of any two original papers in procedure control unit and the button at most with same single-chip microcomputer IO interface, symbol i, j, n, k is the natural number greater than 1, and satisfies inequality (i+j)/k≤n.

In sum, be unrestricted description at the utility model one preferred embodiment, in every case the utility model example structure is carried out simple modification, all belong to the scope of this patent protection.

Claims

1, air conditioner single-chip microcomputer input/output interface circuit control device, comprise single-chip microcomputer, light-emitting diode display, have the program module selection control circuit of i procedure control unit and key control circuit with j button, be connected with n signal input electric signal of light-emitting diode display with the signal data line by n to the n IO interface No. 1 of described single-chip microcomputer, it is characterized in that: single-chip microcomputer n+1 number to the n+k IO interface respectively through resistance R 1, R2, ... Rk ground connection, the two ends of procedure control unit, the two ends of button all respectively with No. 1, single-chip microcomputer to one of n IO interface, be electrically connected to one of n+k IO interface for single-chip microcomputer n+1 number, have only an end to be electrically connected in the two ends of any two original papers in procedure control unit and the button at most with same single-chip microcomputer IO interface, symbol i, j, n, k is the natural number greater than 1, and satisfies inequality (i+j)/k≤n.

2, air conditioner single-chip microcomputer input/output interface circuit control device according to claim 1 is characterized in that: i=8, j=6, n=7, k=2.

3, air conditioner single-chip microcomputer input/output interface circuit control device according to claim 2, it is characterized in that: described procedure control unit is a diode, No. 1, No. 1 IO interface of the anode of No. 2 procedure control units and single-chip microcomputer is electrically connected, No. 3, No. 2 IO interface of the anode of No. 4 procedure control units and single-chip microcomputer are electrically connected, No. 5, No. 3 IO interface of the anode of No. 6 procedure control units and single-chip microcomputer are electrically connected, No. 7, No. 4 IO interface of the anode of No. 8 procedure control units and single-chip microcomputer are electrically connected, No. 1, No. 3, No. 5, No. 9 IO interface of the negative electrode of No. 7 procedure control units and single-chip microcomputer are electrically connected, No. 2, No. 4, No. 6, No. 8 IO interface of the negative electrode of No. 8 preface control modules and single-chip microcomputer are electrically connected, in the key control circuit, the two ends of No. 1 button respectively with No. 5, single-chip microcomputer, No. 9 IO interface is electrically connected, the two ends of No. 2 buttons respectively with No. 5, single-chip microcomputer, No. 8 IO interface is electrically connected, the two ends of No. 3 buttons respectively with No. 6, single-chip microcomputer, No. 9 IO interface is electrically connected, the two ends of No. 4 buttons respectively with No. 6, single-chip microcomputer, No. 8 IO interface is electrically connected, the two ends of No. 5 buttons respectively with No. 7, single-chip microcomputer, No. 9 IO interface are electrically connected, the two ends of No. 6 buttons respectively with No. 7, single-chip microcomputer, No. 8 IO interface is electrically connected.