CN218482860U

CN218482860U - Synchronous control circuit

Info

Publication number: CN218482860U
Application number: CN202223052929.8U
Authority: CN
Inventors: 陈伟杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-02-14
Anticipated expiration: 2032-11-16

Abstract

The utility model provides a synchronous control circuit, including a plurality of isolation device and a plurality of switching device, a plurality of switching device parallelly connected constitution a parallel circuit, a plurality of isolation device's control end and parallel circuit establish ties mutually and constitute first series circuit, the one end and the positive electrical connection of power of first series circuit, the other end and the power negative pole electrical connection of first series circuit, a plurality of switching device's control end is used for being connected, a plurality of with an outside controller electricity respectively isolation device's output is connected with an acceptance device electricity respectively. The utility model has no need of adding extra driving circuit, so that all the isolation devices can synchronously operate, and further realize that the receiving device can synchronously transmit the control signal without time delay; and a plurality of switching devices are arranged in parallel to realize a shared circuit of a plurality of controllers.

Description

Synchronous control circuit

Technical Field

The utility model relates to the field of communication technology, particularly, relate to a synchronous control circuit.

Background

With the development of technology, the application of broadcasting or synchronous control is more and more widespread. In conventional broadcasting, there are mainly classified into tandem broadcasting and parallel broadcasting. The serial connection is that the signal of the previous stage is sent to the next stage, and the signal is driven or amplified to transmit the signal to the next stage. The top layer of the scheme does not need a special amplifying circuit to drive signals, so that the communication and transmission of data are realized. However, if too many objects need to be broadcasted, the driving capability is insufficient, a certain type delay exists, especially, the last stage receives signals, the delay exists compared with the first stage, and meanwhile, if one of the stages fails to receive signals, the signal reception of the later stage is affected.

In parallel broadcasting, the topmost transmitter drives N objects by increasing the transmission capability of signals, and signals are transmitted to all receiving objects. The advantage of this scheme is that there is substantially no delay, even if one of the stages fails to receive, it does not affect the reception of any other stage. But requires additional driving circuitry and also causes some delay.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a synchronous control circuit, solve among the prior art unable simultaneous realization do not have extra drive circuit and the whole problem of not having the time delay.

The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a synchronous control circuit, includes a plurality of isolation device and a plurality of switching device, a plurality of switching device connects in parallel and constitutes a parallel circuit, a plurality of isolation device's control end and parallel circuit establish ties mutually and constitute first series circuit, the one end and the anodal electric connection of power of first series circuit, the other end and the power negative pole electric connection of first series circuit, a plurality of switching device's control end is used for being connected with an outside controller electricity respectively, a plurality of isolation device's output is connected with an acceptance device electricity respectively.

Compared with the prior art, the utility model has the advantages of: an additional driving circuit is not required to be additionally arranged, so that all the isolation devices can synchronously operate, and the receiving device can synchronously transmit the control signals without delay; and the plurality of switching devices are arranged in parallel to realize the shared control of a plurality of controllers.

Preferably, the control terminal of each isolation device is connected in parallel with a voltage stabilizer for protecting the isolation device or maintaining the voltage across the isolation device stable.

The technical effect achieved by adopting the technical scheme is as follows: the voltage stabilizer can protect the isolation device; if the corresponding isolation device is damaged, the voltage stabilizer can ensure that the stage is short-circuited or maintains a certain voltage difference, only the corresponding receiving device can be damaged, other receiving devices cannot be influenced, and the whole synchronous control circuit can still normally operate.

Preferably, the isolation device is a photoelectric coupler, all the photoelectric couplers are mutually connected in series through a positive electrode and a negative electrode to form a second series circuit, the second series circuit and the parallel circuit are connected in series to form a first series circuit, and the receiving device is electrically connected between two electrodes output by the corresponding photoelectric couplers.

The technical effect achieved by adopting the technical scheme is as follows: realize signal single-phase transmission through optoelectronic coupler, guarantee to keep apart between each signal, keep apart the effect better.

Preferably, the voltage stabilizer is a voltage stabilizing diode, the voltage stabilizing diode is arranged between the anode and the cathode of the photoelectric coupler in parallel, the cathode of the voltage stabilizing diode is electrically connected with the anode of the photoelectric coupler, and the anode of the voltage stabilizing diode is electrically connected with the cathode of the photoelectric coupler.

The technical effect achieved by adopting the technical scheme is as follows: through zener diode, guarantee to maintain certain voltage difference between optoelectronic coupler's the positive pole and the negative pole, can maintain circuit normal operating.

Preferably, the isolation device is a relay, coil control ends of all the relays are connected in series to form a third series circuit, the third series circuit and the parallel circuit are connected in series to form a first series circuit, and the receiving device is electrically connected between two normally open contact ends or two normally closed contact ends of the corresponding relay.

The technical effect achieved by adopting the technical scheme is as follows: realize signal single-phase transmission through the relay, guarantee to keep apart between each signal, keep apart the effect better.

Preferably, the switching device is an MOS transistor, a source electrode of the MOS transistor is electrically connected to a negative electrode of the power supply, a drain electrode of the MOS transistor is electrically connected to a negative electrode of the photocoupler, and a gate electrode of the MOS transistor is electrically connected to an external controller.

The technical effect achieved by adopting the technical scheme is as follows: the MOS tube is used for replacing an electronic switch, so that the whole circuit is easier to control on or off.

Preferably, the output terminals of a plurality of said receiving devices are electrically connected to each other.

The technical effect achieved by adopting the technical scheme is as follows: if one receiving device is damaged, the other receiving device can still receive, transmit and output signals.

Drawings

Fig. 1 is a circuit diagram of the synchronous control circuit of the present invention.

Description of reference numerals: 1-an isolation device; 2-a switching device; 3-a voltage stabilizer; 4-receiving the device.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1, the present embodiment relates to a synchronous control circuit, which includes a plurality of isolation devices 1 and a plurality of switching devices 2.

The plurality of switch devices 2 are connected in parallel to form a parallel circuit, the control ends of the plurality of isolation devices 1 and the parallel circuit are connected in series to form a first series circuit, one end of the first series circuit is electrically connected with the positive pole of the power supply, and the other end of the series circuit is electrically connected with the negative pole of the power supply. In the actual use process, different series-parallel connection of the isolation device 1 can be realized according to the requirement to realize the electrical connection. The plurality of switching devices 2 arranged in parallel realize a shared circuit of a plurality of controllers.

The control ends of the plurality of switching devices 2 are respectively used for being electrically connected with an external controller, the control end of each isolating device 1 is respectively connected with a voltage stabilizer 3 in parallel, and the output ends of the plurality of isolating devices 1 are respectively electrically connected with a receiving device 4.

The synchronous control circuit of the embodiment does not need to add an additional driving circuit, so that all the isolation devices 1 can synchronously operate, and further the receiving device 4 can synchronously transmit the control signals without delay.

The control end of each isolation device 1 is connected in parallel with a voltage stabilizer 3 for protecting the isolation device 1 or maintaining the voltage stability at the two ends of the isolation device 1.

The control end of every isolation device 1 is connected with a stabiliser 3 electricity, if isolation device 1 that corresponds damages, because of stabiliser 3's setting, can guarantee this level short circuit or maintain certain voltage difference, only can damage the communication function of the acceptance device 4 that corresponds, can not influence other communication functions of accepting device 4, maintains whole circuit and can normal operating.

In the present embodiment, the isolation device 1 is a photocoupler, all the photocouplers are connected in series through a positive electrode and a negative electrode to form a second series circuit, the second series circuit is connected in series with the switching device 2 to form a first series circuit, and the receiving device 4 is electrically connected between two electrodes of the output of the corresponding photocoupler.

Realize signal single-phase transmission through optoelectronic coupler, guarantee to keep apart between each signal, keep apart the effect better.

The voltage stabilizer 3 is a voltage stabilizing diode, the voltage stabilizing diode is arranged between the anode and the cathode of the photoelectric coupler in parallel, the cathode of the voltage stabilizing diode is electrically connected with the anode of the photoelectric coupler, and the anode of the voltage stabilizing diode is electrically connected with the cathode of the photoelectric coupler.

Through zener diode, guarantee to maintain certain voltage difference between optoelectronic coupler's the positive pole and the negative pole, can maintain circuit normal operating. Of course, the voltage regulator 3 may also employ other devices capable of maintaining normal circuit motion, or other additional voltage regulation circuits.

In the actual use process, the voltage stabilizer 3 may also be a protection and maintenance device such as a rectifier diode or a forward diode meeting the requirement, or a voltage stabilizing circuit.

Further, in this embodiment, the isolation device 1 may also be a relay, coil control ends of all the relays are connected in series to form a third series circuit, the third series circuit is connected in series with the switch device 2 to form a first series circuit, and the receiving device 4 is electrically connected between two normally open contact ends or two normally closed contact ends of the corresponding relay.

Realize signal single-phase transmission through the relay, guarantee to keep apart between each signal, keep apart the effect better.

In this embodiment, the switching device 2 is a MOS transistor, a source of the MOS transistor is electrically connected to a negative electrode of the power supply, a drain of the MOS transistor is electrically connected to a negative electrode of the photocoupler, and a gate of the MOS transistor is electrically connected to an external controller. The MOS tube is used for replacing an electronic switch, so that the on-off of the whole circuit is easier to control. Of course, the switching device 2 may be a photocoupler, a relay, or the like.

In the present embodiment, the output terminals of several receiving devices 4 are electrically connected to each other. If one of the receiving devices 4 is damaged, the receiving and transmitting of signals can still be realized through the other receiving device 4.

Furthermore, in order to ensure the completeness and stability of the communication signals, besides the dual-path backup output, a plurality of receiving devices 4 can also be connected in parallel to realize the multi-path backup, so that the stable transmission of the communication can be ensured.

Referring to fig. 1, the operation principle of a synchronous control circuit is as follows:

1. when the controller sends a signal to drive the MOS tube to be conducted, all the photoelectric couplers in the series circuit are conducted simultaneously, so that all the photoelectric couplers work, and all the receiving devices 4 can receive signals.

2. If optoelectronic coupler U3 damages, then because zener diode D3's existence, series circuit still can pass through the electric current, does not influence the work of other optoelectronic couplers, and then other receiving device 4 can both accept the signal.

3. If the corresponding receiving devices 4 of the photoelectric coupler U2 and the photoelectric coupler U3 are connected in parallel, that is, the two receiving devices 4 output the same signal, then the photoelectric coupler U3 is damaged, and since the photoelectric coupler U2 can work, then the signal can still be received.

In the practical use process, a general controller, such as an MCU, drives a very small current, generally only a few milliamperes, and the driving of the photocouplers also needs the current to work, so the general MCU can only drive one to two photocouplers. In the present embodiment, the entire photocoupler is connected to both ends of the power supply, so that a large number of photocouplers can be driven as long as the voltage is high enough, thereby realizing large-area broadcast communication.

The voltage of a general photoelectric coupler during working is about 1.2 volts, and then, taking the voltage of an automobile battery of 12 volts as an example, 10-12 paths of signal broadcasting can be driven. If the voltage of the new energy vehicle can reach more than 300 volts, the broadcasting of more than 300 receiving objects can be realized. The synchronous control circuit related to the embodiment is very simple and effective to realize.

The utility model has the advantages that: an additional driving circuit is not required to be additionally arranged, so that all the isolation devices 1 can synchronously operate, and the receiving device 4 can synchronously transmit signals without delay; meanwhile, the control end of each isolation device 1 is electrically connected with a voltage stabilizer, if the corresponding isolation device 1 is damaged, the voltage stabilizer 3 can ensure that the short circuit is in the level or a certain voltage difference is maintained, only the communication function of the corresponding receiving device 4 can be damaged, the communication functions of other receiving devices 4 cannot be influenced, and the whole serial broadcast communication circuit can still normally operate.

The foregoing description shows and describes several preferred embodiments of the present invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, and is not to be construed as excluding other embodiments, but is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims

1. A synchronous control circuit, characterized by: including a plurality of isolation device (1) and a plurality of switching device (2), a plurality of switching device (2) parallelly connected constitution parallel circuit, a plurality of the control end and the parallel circuit of isolation device (1) establish ties mutually and constitute first series circuit, first series circuit's one end and the anodal electric connection of power, first series circuit's the other end and power negative pole electric connection, a plurality of the control end of switching device (2) is used for being connected with an outside controller electricity respectively, a plurality of the output of isolation device (1) is connected with an acceptance device (4) electricity respectively.

2. A synchronous control circuit as claimed in claim 1, wherein: the control end of each isolation device (1) is respectively connected in parallel with a voltage stabilizer (3) used for protecting the isolation device (1) or maintaining the voltage stability at the two ends of the isolation device (1).

3. A synchronous control circuit as claimed in claim 2, wherein: the isolation device (1) is a photoelectric coupler, all the photoelectric couplers are mutually connected in series through positive electrodes and negative electrodes to form a second series circuit, the second series circuit and the parallel circuit are connected in series to form a first series circuit, and the receiving device (4) is electrically connected between two electrodes output by the corresponding photoelectric couplers.

4. A synchronous control circuit as claimed in claim 3, wherein: the voltage stabilizer (3) is a voltage stabilizing diode, the voltage stabilizing diode is arranged between the anode and the cathode of the photoelectric coupler in parallel, the cathode of the voltage stabilizing diode is electrically connected with the anode of the photoelectric coupler, and the anode of the voltage stabilizing diode is electrically connected with the cathode of the photoelectric coupler.

5. A synchronous control circuit as claimed in claim 2, wherein: the isolation device (1) is a relay, coil control ends of all the relays are mutually connected in series to form a third series circuit, the third series circuit and the parallel circuit are connected in series to form a first series circuit, and the receiving device (4) is electrically connected between two normally open contact ends or two normally closed contact ends of the corresponding relay.

6. A synchronous control circuit as claimed in claim 1, wherein: the switch device (2) is an MOS (metal oxide semiconductor) tube, the source electrode of the MOS tube is electrically connected with the negative electrode of a power supply, the drain electrode of the MOS tube is electrically connected with the negative electrode of the photoelectric coupler, and the grid electrode of the MOS tube is electrically connected with an external controller.

7. A synchronous control circuit as claimed in claim 1, wherein: the outputs of several of said receiving devices (4) are electrically connected to each other.