CN210956556U

CN210956556U - Single-delay relay with power-off memory time

Info

Publication number: CN210956556U
Application number: CN201922101212.XU
Authority: CN
Inventors: 杨前明
Original assignee: Shanghai Yancan Electronic Technology Co ltd
Current assignee: Shanghai Zhongkai Jinde Electronic Technology Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-07-07
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a single time delay area outage memory time relay relates to time relay technical field. The utility model comprises a main control chip electrically connected with a power supply module, wherein the main control chip is respectively and electrically connected with a power supply outage detection module, a dial switch circuit, a display circuit and a relay output circuit; the main control chip adopts a Zhongying SH79F3213 type chip; the power supply power-off detection module comprises a triode, a sampling resistor and an operational amplifier combination in the main control chip. The utility model discloses a power failure detection circuitry and main control chip realize in time protecting the scene when the sudden power failure in the equipment operation, record operation data, when equipment circular telegram once more, through the data continuation operation that reads the storage, the time that complete operation set up has avoided the outage to make the timing mistake and the unexpected condition that leads to takes place.

Description

Single-delay relay with power-off memory time

Technical Field

The utility model belongs to the technical field of time relay, especially, relate to a single time delay area outage memory time relay.

Background

The time relay is a relay protection device, and mainly utilizes an electromagnetic principle or a mechanical principle to realize a time delay control circuit. A time relay can also be said to be an electrical component used in a lower voltage or lower current circuit to switch on or off a higher voltage, higher current circuit. The time relay is widely used for production process automation devices, power system protection devices and various telecontrol, remote control and communication devices, and is one of the most basic electrical elements in modern automatic control systems.

The time relay is used as an executive device in simple program control, starts timing after receiving a starting signal, and performs opening or closing action on a working contact after timing is finished, so that subsequent circuits are pushed to work.

Generally, the delay performance of a time relay can be adjusted within a design range, so that the delay time of the time relay can be conveniently adjusted. The time is set by the combination of dial switches and can be divided into two types of setting before power-on and online setting. Before power-on, a dial switch is set, then the power-on is carried out, the dial setting is changed during operation by setting on line, and then the current counting is reset through a reset key.

In practical applications, the device may encounter a power outage. When the time relay without the memory function is powered on again after power failure, the state before power failure does not exist, and the time relay can be counted again according to the dial setting read by power on. This can lead to serious accidents in some applications where timeout is not allowed or where output overshoot is not allowed. Therefore, in order to solve the above problems, it is important to provide a single-delay memory relay with power-off function.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a power failure detection circuitry and main control chip realize in time protecting the scene when the sudden power failure in the equipment operation, record operation data, when equipment circular telegram once more, through the data continuation operation that reads the storage, the time that complete operation set up has avoided the outage to make the timing mistake and the unexpected condition that leads to takes place.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model discloses a single time delay area outage memory time relay, include the main control chip that links to each other with power module electrical property, on the main control chip respectively electrical connection have power outage detection module, dial switch circuit, display circuit, relay output circuit;

the power supply power-off detection module is used for monitoring the power supply state of the power supply module in real time;

the dial switch circuit is used for setting the operation data through the switch without combination;

the display circuit is used for displaying actual timing data;

and the relay output circuit is used for outputting the action of the relay when the actual timing reaches a set value.

Further, the main control chip adopts a Zhongying SH79F3213 type chip.

Furthermore, the power outage detection module comprises a triode, a sampling resistor and an operational amplifier inside the main control chip, and the main control chip judges the power state by detecting the level change on the collector electrode of the triode.

Furthermore, the relay output circuit is controlled by the main control chip to open and close the relay for output control.

Furthermore, the display circuit is connected with the LED through a four-digit nixie tube to display according to different timing modes and actual timing data.

The utility model discloses following beneficial effect has:

the utility model discloses a power failure detection circuitry and main control chip realize in time protecting the scene when the sudden power failure in the equipment operation, record operation data, when equipment circular telegram once more, continue the operation through the data that reads the storage, the time that complete operation set up, the unexpected condition of having avoided the outage to make the timing mistake and leading to takes place, realize in time protecting current data when the outage condition is met in time relay operation process, when the power resumes, can continue the data continuation operation before the outage, in order to guarantee actual timing and set up accurate matching, it is wide to have market application prospect, the operation is reliable and stable, economic benefits is showing advantage.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a hardware connection relationship of a single-delay relay with power-off memory time according to the present invention;

FIG. 2 is a schematic diagram of a hardware circuit configuration of the power outage detection module shown in FIG. 1;

FIG. 3 is a schematic diagram of a hardware circuit configuration of the relay output circuit of FIG. 1;

FIG. 4 is a schematic diagram of the structure of the dip switch circuit of FIG. 1;

FIG. 5 is a schematic diagram of the structure of the dip switch circuit of FIG. 1;

fig. 6 is a schematic structural diagram of the dial switch circuit in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, a single-delay memory time relay with power-off of the present invention includes a main control chip electrically connected to a power module, the main control chip is electrically connected to a power-off detection module, a dial switch circuit, a display circuit, and a relay output circuit;

the power supply power-off detection module is used for monitoring the power supply state of the power supply module in real time, when a power-off event occurs, the main control chip detects a power-off signal in time, records dial data and a current timing value, stores the data in a memory unit in the main control chip and carries out field protection; the dial switch circuit is used for setting the operation data through the switch without combination; the display circuit is used for displaying the actual timing data; the relay output circuit is used for outputting the action of the relay when the actual timing reaches a set value.

When the time relay is electrified and starts to work, the main control chip reads the time value and the time unit setting of the dial switch, and simultaneously reads the setting data in the memory unit and compares the two sets of data. If the currently read dial data is inconsistent with the dial data in the memory unit, the dial value is reset, and the time relay starts timing from zero at the moment; if the currently read dial data is the same as the dial data of the memory unit and the write-in power-off data exists at the same time, the current event belongs to power-off and power-on, and the time relay continues to time the running data before power-off;

the time relay judges that the power failure event occurs before the power is turned on, when the setting accords with the power failure memory mode, the time is continuously counted according to the value before the power failure, and if the user needs to reset the data and count again according to the historical setting, the reset key is pressed. The current timing can be cleared when the reset key is pressed at any time when the time relay runs;

the time relay performs timing according to setting, and the timing mode comprises the following steps: every 10 milliseconds, add 1; every 100 milliseconds, add 1; adding 1 every 1 second; adding 1 every 10 seconds; adding 1 every 6 seconds; adding 1 per minute; adding 1 to the back of the decimal point every 1 second, and advancing 1 to the front of the decimal point every 60 seconds; adding 1 every 6 minutes; adding 1 every 1 hour; after the decimal point, 1 is added to every 1, and every 60 decimal points are advanced by 1. The four-digit nixie tube displays the actual timing data according to different timing modes, and when the actual timing reaches a set value, the relay acts to output;

wherein, the main control chip adopts a Zhongying SH79F3213 type chip.

The power supply power-off detection module comprises a triode, a sampling resistor and an operational amplifier combination in a main control chip, the main control chip judges the power supply state by detecting the level change on the collector electrode of the triode, records dial data and the current timing value, and stores the data into a memory unit in the main control chip for field protection.

The relay output circuit is controlled by the main control chip to open and close the relay for output control.

The display circuit is connected with the LED through the four-digit nixie tube and displays according to different timing modes and actual timing data.

Has the advantages that:

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a single time delay area outage memory time relay, includes the main control chip who links to each other with power module electrical property, its characterized in that:

the main control chip is electrically connected with a power supply outage detection module, a dial switch circuit, a display circuit and a relay output circuit respectively;

the display circuit is used for displaying actual timing data;

2. The single-delay electrified disconnection memory time relay as claimed in claim 1, wherein said main control chip is a Zhongying SH79F3213 type chip.

3. The relay according to claim 1, wherein the power failure detection module comprises a combination of a triode, a sampling resistor and an operational amplifier inside the main control chip.

4. The relay according to claim 1, wherein the relay output circuit is output-controlled by a main control chip controlling the opening and closing of the relay.

5. The relay according to claim 1, wherein the display circuit is connected to the LED through a four-digit nixie tube to display the timing data according to different timing modes and actual timing data.