CN201518094U - Multi-channel programmable electronic timing controller - Google Patents

Abstract

The utility model relates to a multi-channel programmable electronic timing controller based on a singlechip and a real time clock chip. The multi-channel programmable electronic timing controller can realize timing switch-on/off of electric equipment, belongs to the technical field of electronic clock timing control electric equipment switch-on/off, and includes a general hard plastic instrument casing with an operation display panel, a display/arrangement circuit board, a main control circuit board, and a driving circuit board. A display/control circuit board is connected with the main control circuit board in a welding manner; the driving circuit board is connected with the main control circuit board through a winding displacement; and the display/arrangement circuit board, the main control circuit board and the driving circuit board are mounted on the operation display panel and mounted into the plastic instrument casing. The controller singlechip has the online programmable function and can realize field real time debugging and modifying control program, the arrangement is simple, the operation is convenient, and users can use conveniently.

Description

Multi-channel programmable electronic timing controller

technical field

The utility model relates to a multi-channel programmable electronic timing controller based on a single-chip microcomputer and a real-time clock chip, which can realize timing on-off of electrical equipment, and belongs to the technical field of electronic clock timing control on-off of electric appliances.

Background technique

Existing timing controllers, its products have early mechanical control and have evolved into electronic controllers that are commonly used at present, and its functions have also increased from early simple functions to multiple functions.

For example, the published utility model patent "Multi-channel Electrical On-Off Clock Timer" (Application No. 89211315.4) belongs to a mechanical multi-channel timing controller. on site. The published utility model patent "Intelligent Programmable Timing Controller" (Application No. 90205844.4) belongs to the electronic timing controller. Although the timing can be programmed, it can only realize the on-off of a single circuit; although it is a one-button operation , but the operation process is not easy to master and inconvenient.

Utility model content

The purpose of the utility model is to provide a multi-channel programmable electronic timing controller based on a single-chip microcomputer and a real-time clock chip. The microcontroller of the controller has an online programmable function, which can debug and modify the control program in real time on site. It is easy to set up, easy to operate, and convenient for users to use.

In order to achieve the above object, the utility model adopts the following technical solutions. It includes a casing and a main control circuit board, a driving circuit board and a display/setting circuit board installed in the casing.

The main control circuit board includes a single-chip microcomputer, a display driver chip, a real-time clock chip, a signal wire connector and a power wire connector, and the display driver chip, a real-time clock chip, a signal wire connector and a power wire connector are all connected to the single-chip microcomputer.

The display/setting circuit board includes four LED display modules, four setting buttons, a power indicator light and eight on-off indicator lights; the four setting buttons are respectively the first button, the second button, the second button Three buttons and a fourth button; the LED display module is connected to the single-chip microcomputer through a display driver chip, and four setting buttons, a power indicator light and eight on-off indicator lights are also connected to the single-chip microcomputer in the main control circuit board.

The drive circuit board includes a power conversion module, a fuse socket, a photoelectric isolation chip, a signal wire connector, a power wire connector and eight relays, the power conversion module is connected to the fuse socket and the power wire connector respectively, and the photoelectric isolation chip is connected to the signal The wire connector is connected to the eight-way relay.

The signal wire connector of the main control circuit board is connected with the signal wire connector of the driving circuit board, and the power wire connector of the main control circuit board is connected with the power wire connector of the driving circuit board.

The single-chip microcomputer adopts AT89S52 microcontroller, the LED display module adopts SR440563K digital tube, the display driver chip adopts MAX7219, the real-time clock chip adopts DS12C887+, the power conversion module adopts HN2E5-05, the relay adopts JZC-49FA, and the photoelectric isolation chip adopts TLP627- 4.

Compared with the existing timing controller, the utility model has the following advantages:

1) The structure is simple, the installation is convenient, and it can be used in industrial sites.

2) The user can independently program each output channel to set the start time and stop time through the setting button; it can also set the interval on and off during the working time period, and the interval time can be adjusted arbitrarily within 60 minutes.

Description of drawings

Figure 1 Structure block diagram of multi-channel programmable electronic timing controller

Figure 2 shows/sets schematic diagram of circuit board layout structure

Figure 3 Multi-channel programmable electronic timing controller operation panel diagram

Figure 4 Schematic diagram of the layout of the main control circuit board

Figure 5 Schematic diagram of the layout of the drive circuit board

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

The utility model adopts a modular structure in circuit design, and is composed of a single-chip microcomputer (CPU), a real-time clock module, a time setting module, a timing setting module, a digital display module, a channel indication module, a relay output module, and a power conversion module. The overall structure is shown in Figure 1.

In this embodiment, the above modules are respectively designed on the main control circuit board, the driving circuit board and the display/setting circuit board. Among them: the main control circuit board includes a single-chip microcomputer, a display driver chip, a real-time clock chip, a signal line connector, and a power line connector. . The display/setting circuit board includes a four-way LED display module with a colon in the middle, four setting buttons, a power indicator light and eight on-off indicator lights. The four setting buttons are respectively the first button (UP button), the second button (DOWN button), the third button (SET button) and the fourth button (OK button) as shown in Fig. 2 and Fig. 3 . The LED display module is connected with the single-chip microcomputer through the display driver chip, and the four setting buttons, one power indicator light and eight on-off indicator lights are also connected with the single-chip microcomputer in the main control circuit board. The drive circuit board includes a power conversion module, a fuse socket, a photoelectric isolation chip, a signal line connector, a power line connector and eight relays. Eight relays are connected, as shown in Figure 5. The signal wire connector of the main control circuit board is connected with the signal wire connector of the driving circuit board, and the power wire connector of the main control circuit board is connected with the power wire connector of the driving circuit board.

The MCU in this embodiment adopts AT89S52 microcontroller, the LED display module adopts SR440563K digital tube, the display driver chip adopts MAX7219, the real-time clock chip adopts DS12C887+, the power conversion module adopts HN2E5-05, the relay adopts JZC-49FA, and the photoelectric isolation chip adopts TLP627-4.

The specific module functions and operation methods are as follows:

1. Real-time clock module

The real-time clock module can continue to run for more than 10 years in a power-off state. The chip provides a stable and reliable time reference for the system. Once set by the user, the system time will continue to run regardless of whether the power is supplied or not, so as to prevent the user from repeatedly setting the time after each power-on.

2. Time setting module

Referring to Figure 3, this module can complete the setting of the system time through the setting on the simple operation panel, the operation is simple, and it can be accurate to the minute.

Specific operation method: After turning on the system, the system will automatically display the current time. The user can press UP and DOWN at the same time to reset the time. At this time, the hour digit starts to flash, waiting for setting.

①Press UP or DOWN to set the system hour. At this time, you can see the change of the hour digit value. After setting, press OK to confirm. At this time, the minute digit starts to flash, waiting for setting.

②Press UP or DOWN to set the system minutes, press OK again to confirm, and end the time setting.

When the system time setting is finished, the system time starts to run at the set time, and the second is 0 at this time.

3. Timing setting module

Referring to Fig. 3, the timing setting module is used to set the user's setting of the start, stop and on-off frequency of multiple (≤8) loads. Once set, the system will automatically save the user's modification. Even if it is turned on again after power failure (interval of more than 15 seconds), the system will still control the operation of multiple loads according to the user's latest setting. You can select only one channel to set each time, and the rest will use the default value set last time; you can also set it as a whole.

Specific operation method: In the state of displaying the current time, press SET to enter the channel selection state. At this time, the channel bit is flashing, waiting for setting (power-on default is CH: 01).

①Press UP or DOWN to select the specified channel.

② After selecting the specified channel, press SET to enter the specific time setting. The system displays the result of the last setting by default. At this time, the start hour bit starts to flash, waiting for setting.

③Press UP or DOWN to adjust the start-up hour of the road. Press OK to confirm, and the stop hour digit starts flashing at this time, waiting for setting.

④ Press UP or DOWN to adjust the closing hours of the road. Press OK to confirm. At this time, the minute digit starts to flash when it is connected, waiting for setting.

⑤ Press UP or DOWN to adjust the number of minutes connected each time within one hour. Press OK to confirm. At this time, the disconnected minute digit starts to flash, waiting for setting.

⑥Press UP or DOWN to adjust the minutes of each disconnection within one hour. Press OK to return to channel selection status. The user has finished setting the channel.

⑦ Press UP or DOWN to specify other channel settings, or re-set this channel. The channel that has not been set will keep the last set value. If all the settings of 8 channels have been completed, press OK for one second to return to the time display state. At the same time, the set value just now will be saved, and the system will start to control the 8 channels.

illustrate:

Users can set the start and stop time for each load.

●If the start time <stop time, the load will be automatically controlled within 24 hours.

●If the start time>stop time, then the load will work after the start time until the next day before the stop time.

●If the start time=stop time, the load of this road will stop working.

During the start and stop time of each load, the intermittent start and stop control of the load can be realized from the start hour to the stop hour by setting the on-minute and off-minute. This is especially suitable for load control that requires intermittent operation.

4. Digital display module

The utility model adopts a high-brightness red digital tube with clear fields and elegant appearance, and is suitable for scenes with complex and harsh environments.

5. Channel indication module

The green status indicator light corresponds to the current working status of each load (on for start, off for stop) so that users can obtain the running status of multiple channels in real time.

6. Relay output module

Eight output terminals are relay output type. Working range of each terminal: 5A 30VDC or 5A 250VAC.

7. Power conversion module

The power conversion module is used to convert AC 220V into DC 5V to provide working power for multi-channel programmable electronic timing controllers.

In this specification, the invention has been described with reference to specific embodiments thereof. However, it is obvious that various modifications and changes can be made without departing from the spirit and scope of the present invention. Accordingly, the specification and drawings are to be regarded as illustrative rather than restrictive.

Claims (2)

1. A multi-channel programmable electronic timing controller is characterized in that: it comprises a shell and a main control circuit board, a driving circuit board and a display/setting circuit board installed in the shell; The main control circuit board includes a single-chip microcomputer, a display driver chip, a real-time clock chip, a signal wire connector and a power wire connector, and the display driver chip, a real-time clock chip, a signal wire connector and a power wire connector are all connected to the single-chip microcomputer; The display/setting circuit board includes four LED display modules, four setting buttons, a power indicator light and eight on-off indicator lights; the four setting buttons are respectively the first button, the second button, the second button Three buttons and the fourth button; the LED display module is connected to the single-chip microcomputer through a display driver chip, and four setting buttons, a power indicator light and eight on-off indicator lights are also connected to the single-chip microcomputer in the main control circuit board; The drive circuit board includes a power conversion module, a fuse socket, a photoelectric isolation chip, a signal wire connector, a power wire connector and eight relays, the power conversion module is connected to the fuse socket and the power wire connector respectively, and the photoelectric isolation chip is connected to the signal The wire connector is connected to the eight-way relay; The signal wire connector of the main control circuit board is connected with the signal wire connector of the driving circuit board, and the power wire connector of the main control circuit board is connected with the power wire connector of the driving circuit board. 2. multi-channel programmable electronic timing controller according to claim 1, is characterized in that: described single-chip microcomputer adopts AT89S52 micro-controller, LED display module adopts SR440563K nixie tube, display driver chip adopts MAX7219, and real-time clock chip adopts DS12C887+, the power conversion module uses HN2E5-05, the relay uses JZC-49FA, and the photoelectric isolation chip uses TLP627-4.

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