CN2218378Y

CN2218378Y - Multichannel and multi-character one-chip computer timer

Info

Publication number: CN2218378Y
Application number: CN 95214341
Authority: CN
Inventors: 吴小平
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-28
Filing date: 1995-06-28
Publication date: 1996-01-24
Anticipated expiration: 2005-06-28

Abstract

The utility model relates to a multichannel and multivalue one-chip computer timer, which is composed of a machine shell, a timer circuit, two groups of display digital tubes which are arranged on the machine shell, two groups of light-emitting diodes, and a push-key switch group. The timer circuit is composed of a setting time channel display triggering circuit, a branching time value display triggering circuit, an hour value changing triggering circuit, a minute value changing triggering circuit, a second value changing triggering circuit, a single-chip microcomputer, an address latch, a read only memory, a decoder, a data latch for latching second values, a data latch for latching minute values, a data latch for latching hour values, a latch for the branching time values, a latch for the setting time channel, a driver of the digital tube for the displaying time, a light-emitting diode circuit, and an output control loop. The timer adopts multichannel and multivalue timing control method, and has the advantages of wide timing range, high precision, no noise, simple operation, low cost, and small size.

Description

The many-valued single-chip microcomputer timing controller of multichannel

The utility model relates to a kind of timing controller, the many-valued single-chip microcomputer timing controller of especially a kind of multichannel.

Existing time cycle controller roughly is divided into mechanical type, transistor resistance-capacitance type, special-purpose timing integrated circuit formula and micro computer formula.Mechanical type and transistor resistance-capacitance type, timing accuracy is not high, function is simple; Special-purpose timing integrated circuit formula and micro computer formula, generally all cost is higher, as the micro computer multicircuit time controller that provides in the Chinese patent 93223327, its circuit complexity, cost height and noise are big.

The purpose of this utility model just provides a kind ofly can be controlled a plurality of controls and go the same way, and the timing on each road and the number many-valued single-chip microcomputer timing controller of multichannel that can arbitrarily make, inquire about or change.

The utility model be achieved in that the many-valued single-chip microcomputer timing controller of a kind of multichannel by casing, timer circuit, be contained on the casing two groups and show charactrons; Two groups of light emitting diodes and one group of keyswitch constitute.Timer circuit shows trigger circuit by establishing the time channel digital display, time value shows trigger circuit along separate routes, change the trigger circuit of one hour value, change minute trigger circuit of value, change the trigger circuit of value in second, single-chip microcomputer, address latch, read-only memory, code translator, latch the data latches of value in second, latch the data latches of minute value, latch the data latches of one hour value, shunt time value latch, if the time way latch, the charactron driver of demonstration time, circuit of LED and output control circuit are formed.

Principle of work of the present utility model is: utilize the clock source of external crystal-controlled oscillation as single-chip microcomputer, the time shows (show hour, the charactron of minute, second between separated by two light emitting diodes that are the colon shape respectively) by charactron; And when a plurality of timing on certain road is set, show with double figures sign indicating number pipe, show currently is being set the time with two light emitting diodes simultaneously for which road, for example, if the light on and off state of three light emitting diodes is followed successively by: go out, go out, bright, then Dai Biao value is 001, promptly represents the 1 the tunnel, and the rest may be inferred.The time that sets is existed in the register of single-chip microcomputer, shows that trigger circuit send interrupt request to single-chip microcomputer by each, and single-chip microcomputer is carried out setting, change and the inquiry of corresponding interrupt service routine realization to the many time values of multichannel.The trigger circuit that change three diode displayed values connect on the outer interrupt request line EXTINT of single-chip microcomputer; Change and show that current trigger circuit for which time value are that time value shows that trigger circuit connect single-chip microcomputer HSI0 pin and connect along separate routes, the HSI1 pin of single-chip microcomputer is connected with the trigger circuit that change one hour value, the HSI2 pin is connected with the trigger circuit that change minute value, and the HSI3 pin is connected with the trigger circuit that change the value in second.

The utlity model has the oneself than the time function, punctual timing can realize second grade controlling; It is very simple to be provided with, to inquire about, change the operation such as fix time of each road; Owing to adopted solid-state relay, have plurality of advantages such as working stability is reliable, noiseless as on-off element.In addition, disposing different solid-state relays is the different equipment of may command, as alternating current equipment, DC equipment, high-current equipment, little current flow devices etc.; Have the separate timing control circuit of multichannel, each road timing and number can arbitrarily be provided with or change, and make that the control of this controller is very flexible, can be widely used in family, unit and the industrial and agricultural production.

Further introduce the utility model below in conjunction with drawings and Examples.

Fig. 1 is that of the many-valued single-chip microcomputer timing controller of multichannel described in the utility model implements illustration.

Fig. 2 is the front panel figure of the many-valued single-chip microcomputer timing controller of multichannel casing.

Fig. 3 is the rear panel figure of the many-valued single-chip microcomputer timing controller of multichannel casing.

The many-valued single-chip microcomputer timing controller of multichannel described in the utility model is deposited on the casing two groups by casing, timer circuit, dress and is shown charactrons 16,21; Two groups of

light emitting diodes

17,19 and key groups 20 constitute.Timer circuit shows trigger circuit 1 by establishing the time channel digital display, time value shows trigger circuit 2 along separate routes, change the trigger circuit 3 of one hour value, change minute trigger circuit 4 of value, change the trigger circuit 5 of value in second, single-chip microcomputer 6, address latch 7, read-only memory 8, code translator 9, latch the data latches 10 of value in second, latch the data latches 11 of minute value, latch the data latches 12 of one hour value, shunt time value latch 13, if the time way latch 14, the charactron driver 15 of demonstration time, circuit of LED 17 and output control circuit 18 are formed.XTAL1 in each pin of single-chip microcomputer 6, the XTAL2 pin is connected with external crystal oscillation circuit, the RESET pin connects 201 in the key groups 20, the EXTINT pin with establish the time channel digital display and show that trigger circuit 1 are connected, the HSI0 pin shows that with the shunt time value trigger circuit 2 are connected, the HSI1 pin is connected with the trigger circuit 3 that change one hour value, the HSI2 pin is connected with the trigger circuit 4 that change minute value, the HSI3 pin is connected with the trigger circuit 5 that change the value in second, address pin AD0-AD7 is connected with the D0-D7 pin of address latch 7 and read-only memory 8, ALE is connected with the LE pin of address latch 7, the RD pin is connected with the 0E pin of read-only memory 8, the A8-A12 pin of described single-chip microcomputer 6 is connected with the respective foot of read-only memory 8, the A13-A15 pin of single-chip microcomputer 6 respectively with the A of code translator 9, B, the C pin connects.

Present embodiment utilizes the clock source of the external crystal-controlled oscillation 22 of 1ZMHZ as single-chip microcomputer 6, and the time shows (show hour, the charactron of minute, second between separated by two light emitting diodes 19 that are the colon shape respectively) by charactron 16; And when a plurality of timing on certain road is set, present embodiment adopts double figures sign indicating number pipe 21 to show, simultaneously, show currently is being set the time with two light emitting diodes 17 for which road, for example, if the light on and off state of three light emitting diodes 17 is followed successively by: go out, go out, bright, then Dai Biao value is 001, promptly represent the 1 the tunnel, the rest may be inferred.The time that sets is existed in the register of single-chip microcomputer 6, sends interrupt request by showing

trigger circuit

2,3,4,5 to single-chip microcomputer 6, and single-chip microcomputer 6 is carried out corresponding interrupt service routine and realized setting, change and inquiry to the many time values of multichannel.

Present embodiment establishes 5 the tunnel altogether, be that output control circuit 18 is made up of solid-state relay 181,182,183,184,185, solid-state relay 181,182,183,184,185 respectively when establishing output terminal Q4, Q5, Q6, Q7, the Q8 pin of way latch 14 be connected, when the Q end is high level, the solid-state relay on corresponding road is connected, and this road is open-minded, otherwise when the Q end is low level, the solid-state relay on corresponding road disconnects, and this road disconnects.

The model of each integrated chip is as follows in the present embodiment circuit as shown in the figure: single-chip microcomputer 6 is 8098, address latch 7 is 74LS373, read-only memory 8 is 2764, code translator 9 is 74LS138, latch the data latches 10 of value in second, latch the data latches 11 of minute value, latch the data latches 12 of one hour value, shunt time value latch 13, if the time way latch 14 be 74L273, charactron driver 15 is 74LS48, solid-state relay 181,182,183,184,185 model is SSR, and charactron group 17 in the present embodiment, 19 all adopt the common cathode charactron, and key groups 20 is a touch-key.

Claims

1, the many-valued single-chip microcomputer timing controller of multichannel has timer circuit and casing, it is characterized in that: it also comprises two groups of demonstration charactrons (16), (21) that are contained on the casing; Two groups of light emitting diodes (17), (19) and keyswitch group (20); Timer circuit shows trigger circuit (1) by establishing the time channel digital display, time value shows trigger circuit (2) along separate routes, change the trigger circuit (3) of one hour value, change minute trigger circuit (4) of value, change the trigger circuit (5) of value in second, single-chip microcomputer (6), address latch (7), read-only memory (8), code translator (9), latch the data latches (10) of value in second, latch the data latches (11) of minute value, latch the data latches (12) of one hour value, shunt time value latch (13), if the time way latch (14), the charactron driver (15) of demonstration time, circuit of LED (17) and output control circuit (18) are formed, XTAL1 in each pin of single-chip microcomputer (6), the XTAL2 pin is connected with external crystal oscillation circuit, the RESET pin connects first switch in the keyswitch group (20), the EXTINT pin with establish the time channel digital display and show that trigger circuit (1) are connected, the HSI0 pin shows that with the shunt time value trigger circuit (2) are connected, the HSI1 pin is connected with the trigger circuit (3) that change one hour value, the HSI2 pin is connected with the trigger circuit (4) that change minute value, the HSI3 pin is connected with the trigger circuit (5) that change the value in second, address pin AD0-AD7 is connected with the D0-D7 pin of address latch (7) and read-only memory (8), ALE is connected with the LE pin of address latch (7), the RD pin is connected with the OE pin of read-only memory (8), the A8-A12 pin of described single-chip microcomputer (6) is connected with the respective foot of read-only memory (8), the A13-A15 pin of described single-chip microcomputer (6) respectively with the A of code translator (9), B, the C pin connects.

2, the many-valued single-chip microcomputer timing controller of multichannel according to claim 1, it is characterized in that: output control circuit (18) is made up of solid-state relay (181), (182), (183), (184), (185), solid-state relay (181), (182), (183), (184), (185) respectively when establishing output terminal Q4, Q5, Q6, Q7, the Q8 pin of way latch (14) be connected.