CN210488291U - Extensible monitoring circuit board - Google Patents
Extensible monitoring circuit board Download PDFInfo
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- CN210488291U CN210488291U CN201922001121.9U CN201922001121U CN210488291U CN 210488291 U CN210488291 U CN 210488291U CN 201922001121 U CN201922001121 U CN 201922001121U CN 210488291 U CN210488291 U CN 210488291U
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Abstract
The utility model discloses an expanded control circuit board, a serial communication port, include: the power supply comprises a communication conversion circuit, a power supply conversion circuit, a signal output circuit, a signal feedback circuit and a single chip microcomputer control circuit which is respectively connected with the communication conversion circuit, the signal output circuit and the signal feedback circuit, wherein the power supply conversion circuit is connected with the communication conversion circuit, the signal output circuit, the signal feedback circuit and the single chip microcomputer control circuit, the signal output circuit comprises a plurality of relay control circuits, a logic switch and a plurality of connecting pieces, one end of each relay control circuit is connected with the logic switch, and the other end of each relay control circuit is connected with the connecting pieces. The utility model discloses can realize the communication of a plurality of control panels series connection, guarantee output signal safety interlocking, the signal can not shake during the output, guarantees the stability of automatic test, control, can low level trigger, multichannel monitoring signal conveniently is applied to on the automatic monitoring test equipment.
Description
Technical Field
The utility model relates to the field of electronic technology, in particular to expanded control circuit board.
Background
The traditional monitoring board power supply is not isolated, external clutter signals can cause small-amplitude fluctuation to a hardware circuit, input signal single-channel monitoring, output signal single-channel control, output channel can not be automatically and intelligently switched, when monitoring signals on equipment are more, the function of a monitoring card can not be expanded to reach the monitoring signals, and the current automatic control requirement can not be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an expanded control circuit board to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: an expandable monitoring cord plate, comprising:
the communication conversion circuit: is used for data transmission with the PC end,
the power supply conversion circuit: for converting an input voltage into an operating voltage,
a signal output circuit: for the purpose of the output of the signal,
the signal feedback circuit: for monitoring the signal;
and the singlechip control circuit is respectively connected with the communication conversion circuit, the signal output circuit and the signal feedback circuit;
the power supply conversion circuit is connected with the communication conversion circuit, the signal output circuit, the signal feedback circuit and the singlechip control circuit;
in some embodiments, the signal output circuit comprises a plurality of relay control circuits, a logic switch and a plurality of connectors, wherein one end of each relay control circuit is connected to the logic switch, and the other end of each relay control circuit is connected to the connectors. The beneficial effects are as follows: the logic chip included in the signal output circuit can ensure the safety interlocking of output signals, the signals cannot shake during output, and the stability of automatic test and monitoring is ensured.
In some embodiments, the signal feedback circuit includes a plurality of optical coupler signal feedback circuits and a connection terminal circuit, one end of each optical coupler signal feedback circuit is connected to the single chip microcomputer control circuit, and the other end of each optical coupler signal feedback circuit is connected to the connection terminal circuit. The beneficial effects are as follows: but low level triggers, and multichannel monitoring signal conveniently is applied to on the automatic monitoring test equipment.
In some embodiments, the single chip microcomputer control circuit comprises an MCU chip, an address dial switch circuit and an MCU burning connecting piece, wherein the address switch circuit is connected to the MCU chip, and the MCU burning connecting piece is connected to the MCU chip. The beneficial effects are as follows: the address dial switch circuit can realize the serial communication of a plurality of control panels.
In some embodiments, the MCU chip is provided with a communication indicator light circuit. The beneficial effects are as follows: and displaying the connection state of the MCU chip.
In some embodiments, the communication conversion circuit is provided with a communication power supply interface, and the communication power supply interface is connected with the power conversion circuit. The beneficial effects are as follows: the communication power supply interface converts the power supply conversion circuit to meet the power supply requirement of the communication conversion circuit.
In some embodiments, the signal output circuit is provided with a signal indicator light. The beneficial effects are as follows: and displaying the connection state of the signal output circuit in real time.
In some embodiments, the signal feedback circuit is provided with a signal indicator light. The beneficial effects are as follows: and displaying the connection state of the signal feedback circuit in real time.
The utility model discloses a technological effect and advantage:
1. the utility model discloses an address dial switch circuit that single chip microcomputer control circuit includes can realize a plurality of control panels series connection communication.
2. The utility model discloses a logic chip that signal output circuit includes can guarantee output signal safety interlocking, and the signal can not shake during the output, guarantees the stability of automatic test, control.
3. The utility model discloses a signal feedback circuit includes a plurality of opto-coupler signal feedback circuit, but low level triggers, and multichannel monitoring signal conveniently is applied to on the automatic monitoring test equipment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a communication switching circuit diagram of the present invention;
fig. 3 is a communication power supply interface diagram of the present invention;
fig. 4 is a power conversion circuit diagram of the present invention;
fig. 5 is a circuit diagram of the signal output circuit of the present invention;
fig. 6 is a circuit diagram of the relay control of the present invention;
FIG. 7 is a circuit diagram of the logic switch and connector of the present invention;
fig. 8 is a signal feedback circuit diagram of the present invention;
fig. 9 is a circuit diagram of the optical coupler signal feedback of the present invention;
fig. 10 is a circuit diagram of a connection terminal according to the present invention;
FIG. 11 is a circuit diagram of the single chip microcomputer control circuit of the present invention;
fig. 12 is a circuit diagram of the communication indicating lamp of the present invention.
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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides an expanded control circuit board as shown in fig. 1 to fig. 4, a serial communication port, include:
the communication conversion circuit: is used for data transmission with the PC end,
the power supply conversion circuit: for converting an input voltage into an operating voltage,
a signal output circuit: for the purpose of the output of the signal,
the signal feedback circuit: for monitoring the signal;
and the singlechip control circuit is respectively connected with the communication conversion circuit, the signal output circuit and the input feedback circuit;
the power supply conversion circuit is connected with the communication conversion circuit, the signal output circuit, the input feedback circuit and the singlechip control circuit;
as shown in fig. 2, the communication switching circuit performs mutual conversion between TTL signals receivable by the single chip microcomputer and RS485 half-duplex serial signals receivable by the upper computer through the RS485 communication switching chip, so as to achieve mutual communication between the control card and the upper computer, wherein the communication parameter is a baud rate of 19200bps, the data bit is 8 bits, the stop bit is 1 bit, and no check bit exists.
In an embodiment of the present invention, the RS485 communication chip is a chip with model SP485 EEN-L/TR.
As shown in fig. 4, the power conversion circuit is an isolation voltage stabilizing circuit based on a DC-DC power supply module, converts an input voltage DC5V into a working voltage DC5V of the MCU, and has isolated input and output and withstand voltage DC1000V, thereby preventing a pulse interference signal possibly existing on an external power supply line from affecting a single chip microcomputer control circuit.
As shown in fig. 5 to 7, the signal output circuit includes a plurality of relay control circuits, a logic switch, and a plurality of connectors, one end of each relay control circuit is connected to the logic switch, and the other end of each relay control circuit is connected to the connectors.
In an embodiment of the present invention, the signal output circuit includes:
a logic switch: with a 74 series (SN74HC139DR) logic switch,
two connecting pieces: a VH 5PIN 3.96mm decoder was used,
8-way relay control circuit: the relay adopts a relay with the model number of HKE AC5-S-DC5V,
the relay control circuit is divided into three ports, one end of the relay control circuit is connected to the logic switch, the other two ends of the relay control circuit are connected to the same connector, and a pin P10, a pin P11, a pin P12, a pin P15, a pin P16 and a pin P17 of the logic switch are respectively connected with a pin No. 1, a pin No. 2, a pin No. 3, a pin No. 13, a pin No. 14 and a pin No. 15 of the MCU chip, which can be referred to fig. 11 specifically. In a high performance memory system in which the decoding system efficiency can be improved by using the SN74HC139DR logic chip for high performance memory decoding or a data transmission system requiring a short transmission delay time, as shown in fig. 7, two separate 2-line-4-line decoders are provided for binary control of the input code to decode a low level output from among the 4 outputs when the enable input G is at a high level. In demodulator applications, the active low enable input is used as the data line. When the singlechip control circuit is combined with the high and low levels of the IO port connected with the pins of the 74 series SN74HC139DR logic chip, a corresponding channel generates a low level signal, the low level signal enables the connected triode to be conducted, the corresponding channel indication LED lamp can be lightened, the relay is controlled to suck, 4 paths of output signals are safely interlocked, the signals cannot shake during output, and the stability of automatic testing and monitoring is ensured.
As shown in fig. 8 to 10, the signal feedback circuit includes a plurality of optical coupler signal feedback circuits and a connection terminal circuit, one end of each optical coupler signal feedback circuit is connected to the single chip microcomputer control circuit, and the other end of each optical coupler signal feedback circuit is connected to the connection terminal circuit.
In an embodiment of the present invention, the signal feedback circuit includes:
connection terminal circuit: two VH 8PIN 3.96mm connecting terminals are connected,
one end of the optical coupling signal feedback circuit is connected with the connecting terminal, the other end of the optical coupling signal feedback circuit is connected with the MCU chip, and the 16 optical coupling signal feedback circuit is respectively provided with an INP01 pin to an INP16 pin which are respectively connected with a No. 24 pin, a No. 25 pin, a No. 26 pin, a No. 27 pin, a No. 28 pin, a No. 29 pin, a No. 30 pin, a No. 31 pin, a No. 36 pin, a No. 37 pin, a No. 38 pin, a No. 39 pin, a No. 40 pin, a No. 41 pin, a No. 42 pin and a No. 42 pin of the MCU chip. When input connection terminal inserts low level signal, the inside emitting diode of opto-coupler switches on, the phototriode switches on, the low level is detected to corresponding IO, when input connection terminal inserts high level signal or when not inserting any signal, the inside emitting diode of opto-coupler is not bright, the phototriode ends, the high level is detected to corresponding IO, the singlechip carries out real-time supervision to IO mouth high-low level, consequently read input signal's state always, the opto-coupler has good isolation effect and very strong common mode rejection ability to input signal simultaneously, 16 way optoelectronic isolation inputs of input signal, low level triggers, multichannel monitoring signal, can conveniently be applied to on the automatic monitoring test equipment.
As shown in fig. 10 to 11, the single chip microcomputer control circuit includes an MCU chip, an address dial switch circuit and an MCU burning connector, the address switch circuit is connected to the MCU chip, and the MCU burning connector is connected to the MCU chip.
The utility model discloses an in the embodiment, single chip microcomputer control circuit includes:
MCU chip: the MCU chip adopts N76E616AL48 chip produced by New Tang,
the address dial switch circuit: the ADD1 pin to the ADD 5pin of the address dial switch circuit are respectively connected with the 19 # pin to the 23 # pin of the MCU chip,
MCU burns record connecting piece: the ICPDA pin, the ICPCK pin and the RST pin of the MCU burning connecting piece are respectively connected with the No. 48 pin and the No. 47 pin and the No. 46 pin of the MCU chip.
The single chip microcomputer control circuit outputs high and low levels to an IO port of the single chip microcomputer through the on-off of the dial switch, the IO port reads the communication address of the controller according to binary conversion, the addressing from 0 to 31 can be realized through the method, the control boards are connected in series for communication, the upper computer sends an instruction to the single chip microcomputer control circuit through the communication conversion circuit, and the single chip microcomputer control circuit controls the IO port to make corresponding action according to the instruction content.
The MCU chip is provided with a communication indicator light circuit, and a COMM pin of the communication indicator light circuit is connected with a No. 32 pin of the MCU chip.
The communication conversion circuit is provided with a communication power supply interface, and the communication power supply interface is connected with the power conversion circuit.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (7)
1. An expandable monitoring cord plate, comprising:
the communication conversion circuit: is used for data transmission with the PC end,
the power supply conversion circuit: for converting an input voltage into an operating voltage,
a signal output circuit: for the purpose of the output of the signal,
the signal feedback circuit: for monitoring the signal;
and the singlechip control circuit is respectively connected with the communication conversion circuit, the signal output circuit and the signal feedback circuit;
the power supply conversion circuit is connected with the communication conversion circuit, the signal output circuit, the signal feedback circuit and the singlechip control circuit;
the signal output circuit comprises a plurality of relay control circuits, a logic switch and a plurality of connecting pieces, wherein one end of each relay control circuit is connected to the logic switch, and the other end of each relay control circuit is connected to the connecting pieces.
2. The expandable monitoring circuit board of claim 1, wherein the signal feedback circuit comprises a plurality of optical coupler signal feedback circuits and a connection terminal circuit, one end of the optical coupler signal feedback circuit is connected to the single chip microcomputer control circuit, and the other end of the optical coupler signal feedback circuit is connected to the connection terminal circuit.
3. The scalable monitor circuit board according to claim 1, wherein the single chip microcomputer control circuit comprises an MCU chip, an address dial switch circuit and an MCU burning connector, the address dial switch circuit is connected to the MCU chip, and the MCU burning connector is connected to the MCU chip.
4. The expandable monitoring circuit board of claim 3, wherein the MCU chip is provided with a communication indicator light circuit.
5. The expandable monitoring circuit board of claim 1, wherein the communication conversion circuit is provided with a communication power supply interface, and the communication power supply interface is connected with the power conversion circuit.
6. The scalable monitor circuit board of claim 1, wherein the signal output circuit is provided with a signal indicator light.
7. The expandable monitoring circuit board of claim 1, wherein the signal feedback circuit is provided with a signal indicator light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922001121.9U CN210488291U (en) | 2019-11-19 | 2019-11-19 | Extensible monitoring circuit board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922001121.9U CN210488291U (en) | 2019-11-19 | 2019-11-19 | Extensible monitoring circuit board |
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| CN210488291U true CN210488291U (en) | 2020-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115632317A (en) * | 2022-09-27 | 2023-01-20 | 广州市诚科电子科技有限公司 | Split arrangement method and system for control electrical box module |
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2019
- 2019-11-19 CN CN201922001121.9U patent/CN210488291U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115632317A (en) * | 2022-09-27 | 2023-01-20 | 广州市诚科电子科技有限公司 | Split arrangement method and system for control electrical box module |
| CN115632317B (en) * | 2022-09-27 | 2023-05-23 | 广州市诚科电子科技有限公司 | Method and system for controlling split arrangement of electric box modules |
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