CN208834986U - Communication type relay signal module - Google Patents
Communication type relay signal module Download PDFInfo
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- CN208834986U CN208834986U CN201820696972.2U CN201820696972U CN208834986U CN 208834986 U CN208834986 U CN 208834986U CN 201820696972 U CN201820696972 U CN 201820696972U CN 208834986 U CN208834986 U CN 208834986U
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Abstract
A kind of communication type relay signal module comprising power supply processing module, main control unit module, communication module and the multiple relay driving output modules being connect respectively with multiple relays；Power supply processing module includes rectification circuit and reduction voltage circuit, for powering for master control unit module, communication module and relay driving output module；Communication module includes the RS485 communication interface connecting with external host, the asynchronous receiving-transmitting transmitter connecting with main control unit module, and is connected between RS485 communication interface and asynchronous receiving-transmitting transmitter and 485 chip U2 are isolated；Main control unit module includes main control chip U1 and the crystal oscillating circuit connecting with main control chip U1, reset circuit and storage circuit, and multiple pins of main control chip U1 are connect with multiple relay driving output modules respectively；Main control unit module is connect by communication module with external host, and controls relay driving output module and state indicator module work, does not need light-coupled isolation electromagnetic interference.
Description
Technical field
The utility model creation is related to Low Voltage Electrical Apparatus, more particularly to a kind of communication type relay signal module.
Background technique
With the continuous development of industrial technology and industrial Internet of Things, to low-voltage circuit breaker in industrial application and matched
Accessory class product requirement is also higher and higher.But the relay module of majority is without communication function at present, but use optocoupler
Relay is controlled, under this control method, relay just needs optocoupler all the way all the way for control, while needing two control lines,
So the wiring needed is not only unfavorable for the design of controller with regard to very much, while also not when controller controls multicircuit relay
It installs and extends conducive to relay signal module, in addition, existing relay construction is complicated, production cost is also relatively high.
Summary of the invention
The defect for aiming to overcome that the prior art that the utility model is created, provides that a kind of structure is simple, high reliablity
Communication type relay signal module.
To achieve the above object, the utility model creation adopts the technical scheme that
A kind of communication type relay signal module comprising power supply processing module, main control unit module, communication module and point
The multiple relay driving output modules not connect with multiple relays；
Power supply processing module includes rectification circuit and reduction voltage circuit, for being master control unit module, communication module and relay
Device drives output module power supply；
The asynchronous receipts that communication module includes the RS485 communication interface connecting with external host, is connect with main control unit module
Transmitter is sent out, and is connected between RS485 communication interface and asynchronous receiving-transmitting transmitter and 485 chip U2 is isolated；
Main control unit module includes main control chip U1 and the crystal oscillating circuit connecting with main control chip U1, reset circuit and deposits
Storage road, multiple pins of main control chip U1 are connect with multiple relay driving output modules respectively；
Main control unit module is connect by communication module with external host, and controls relay driving output module and state
Indicating module work.
Optionally, the power supply processing module and relay driving output module are integrated on the first pcb board, master control list
On the second pcb board that element module and communication module are integrated in, the first pcb board is connect with the second pcb board.
Optionally, 485 chip U2 of the isolation are connect by common-mode filter L1 with RS485 communication interface, common mode filtering
The first winding of device L1 is connected between the RS485A terminal of 485 chip U2 and RS485 communication interfaces of isolation, common-mode filter
The second winding of L1 is connected between the RS485B terminal of 485 chip U2 and RS485 communication interfaces of isolation.
Optionally, the first winding of the common-mode filter L1 passes through transient supression diode D11 and common-mode filter L1
The second winding connection, and one end of the first winding of common-mode filter L1 by transient supression diode D10 ground connection, it is another
End is grounded by filter capacitor C26, and one end of the second winding of common-mode filter L1 is grounded by transient supression diode D9, separately
One end is grounded by filter capacitor C25.
It optionally, further include multiple state indicator modules being connect respectively with the main control chip U1 of main control unit module, it is more
A state indicator module is respectively used to the working condition for multiple relays that instruction is connect with multiple relay driving output modules
With the communications status of main control unit module；The relay driving output module includes the anode of N-MOS pipe Q1, N-MOS pipe Q1
It is connected with the coil of corresponding relay, cathode ground connection, control electrode is connect by resistance R1 with main control chip U1, in N-MOS pipe Q1
Cathode and the both ends of control electrode be parallel with resistance R16 and capacitor C1, be parallel with two poles at the both ends of the coil of corresponding relay
Pipe D1；The state indicator module includes Light-emitting diode LED 1, and the anode of Light-emitting diode LED 1 passes through resistance R1 and power supply
Processing module connection, cathode are connect with the anode of N-MOS pipe Q1, the cathode ground connection of N-MOS pipe Q1, the control electrode of N-MOS pipe Q1
By the connection of resistance R4 and main control chip U1, resistance R29 is parallel in the control electrode of N-MOS pipe Q1 and the both ends of cathode.
Optionally, the crystal oscillating circuit includes the crystal oscillator CY1 and resistance R40 for being connected in parallel on the two sides crystal oscillator CY1, crystal oscillator CY1
Two sides connect respectively with main control chip, and the two sides of crystal oscillator CY1 pass through capacitor C23 and capacitor C24 and crystal oscillator lead respectively
It is grounded after connection；The reset circuit includes the resistance R23 connecting with power supply processing module, and the other end of resistance R23 passes through electricity
Hold C7 ground connection, is parallel with diode D8 at the both ends of resistance R23, the cathode of diode D8 is connect with main control chip U1；It is described to deposit
Storage road includes chip U3, and 1 pin, 3 pins and 5 pins of chip U3 are connect with main control chip U1 respectively, also, chip U3
1 pin, 3 pins and 5 pins pass through resistance R36, resistance R37 and resistance R38 respectively and connect with power supply processing module, chip U3
4 pins connect with power supply processing module and capacitor C5, capacitor C5 is grounded after being connected with 2 pins of chip U3.
Optionally, the reduction voltage circuit includes the buck for being depressured chip U4, inductance L1, diode D9 and capacitor C15 composition
The output end of reduction voltage circuit, one end and rectification circuit for being depressured chip U4 connects, the other end and power supply processing module of inductance L1
Output end connection, diode D9 and capacitor C15 are connected to the both ends of inductance L1.
Optionally, 485 chip U2 of the isolation are connect by common-mode filter L1 with RS485 communication interface, common mode filtering
The first winding of device L1 is connected between the RS485A terminal of 485 chip U2 and RS485 communication interfaces of isolation, common-mode filter
The second winding of L1 is connected between the RS485B terminal of 485 chip U2 and RS485 communication interfaces of isolation；Common-mode filter L1's
First winding is connect by transient supression diode D11 with the second winding of common-mode filter L1, and common-mode filter L1
One end of first winding is grounded by transient supression diode D10, and the other end is grounded by filter capacitor C26, common-mode filter
One end of the second winding of L1 is grounded by transient supression diode D9, and the other end is grounded by filter capacitor C25；Isolation 485
18 pins and 13 pins of chip U2 are connect after being connected with source build-out resistor R43, source build-out resistor R43 and common-mode filter
The first winding of L1 connects, and the first winding of common-mode filter L1 is connect with filter capacitor C26, filter capacitor C26 and every
It is grounded after 20 pins, 16 pins, 14 pins and the connection of 11 pins from 485 chip U2, the first winding of common-mode filter L1
The other end is connect with the RS485A terminal of RS485 communication interface, and the first winding of common-mode filter L1 passes through transient supression
19 pins and the connected rear and pull-up resistor R27 and filter capacitor C18 of 12 pins of 485 chip U2 are isolated in diode D10 ground connection
Connection, pull-up resistor R27 are connect with source build-out resistor R43, are parallel with filter capacitor C17, filter at the both ends of filter capacitor C18
Wave capacitor C10 and filter capacitor C11,17 pins and 15 pins that 485 chip U2 are isolated are connected to be connected with source build-out resistor R44
It connects, source build-out resistor R44 is connect with the second winding of common-mode filter L1, and the second winding of common-mode filter L1 and filter
Wave capacitor C25 is connected with pull down resistor R32, pull down resistor R32 ground connection, filter capacitor C25 and 20 pipes that 485 chip U2 are isolated
It is grounded after foot, 16 pins, 14 pins and the connection of 11 pins, the other end of the second winding of common-mode filter L1 is communicated with RS485
The RS485B terminal of interface connects, and the second winding of common-mode filter L1 is grounded by transient supression diode D9,
It is equipped with terminal coupling resistance R42 between RS485A terminal and RS485B terminal, 4 pins and communication module of 485 chip U2 are isolated
Asynchronous receiving-transmitting transmitter UART_RX terminal connection, be isolated 485 chip U2 5 pins and 6 pins be connected after with communicate mould
The UART_CTL terminal of the asynchronous receiving-transmitting transmitter of block connects, and 7 pins of 485 chip U2 and the asynchronous receiving-transmitting of communication module are isolated
The UART_TX terminal of transmitter connects, and 2 pins and 8 pins connected rear and resistance R41, filter capacitor of 485 chip U2 are isolated
C19 is connected with filter capacitor C12, and resistance R41 is connect with power supply processing module, filter capacitor C19 and filter capacitor C12 difference
Ground connection, and it is parallel with filter capacitor C13 at the both ends of filter capacitor C19, filtering is parallel at the both ends of filter capacitor C12
Capacitor C16,1 pin, 4 pins, 9 pins and 10 pins of 485 chip U2 of isolation are grounded after being connected.
Optionally, the crystal oscillating circuit includes the crystal oscillator CY1 and resistance R40 for being connected in parallel on the two sides crystal oscillator CY1, crystal oscillator CY1
1 pin and 3 pins of two sides are connect with 5 pins of main control chip U1 and 6 pins respectively, and 1 pin of the two sides crystal oscillator CY1 and
3 pins are grounded after passing through the connection of the crystal oscillator lead between capacitor C23 and capacitor C24 and 1 pin and 3 pins respectively；Reset circuit
Including the resistance R23 connecting with power supply processing module, the other end of resistance R23 is grounded by capacitor C7, the two of resistance R23
End is parallel with diode D8, and the cathode of diode D8 is connect with 7 pins of main control chip U1；Storage circuit includes chip U3, core
1 pin of piece U3 connect with 35 pins of main control chip U1 and passes through resistance R36 and connect with power supply processing module, and the 3 of chip U3
Pin is connect with 36 pins of main control chip U1 and by resistance R37 with power supply processing module, 5 pins and master control core of chip U3
26 pins of piece U1 are connected and are connect by resistance R38 with power supply processing module, 4 pins and power supply processing module of chip U3
It is connected with capacitor C5, capacitor C5 is grounded after being connected with 2 pins of chip U3；1 pin and power supply processing module of main control chip U1
It is connected with capacitor C2,2 pins are connect with resistance R31, and resistance R31 is grounded after being connected with capacitor C2；9 pins of main control chip U1
It is connect with capacitor C6,10 pins are connect with resistance R22, and resistance R22 and capacitor C6 are connected with 8 pins of main control chip U1 to be followed by
Ground；24 pins of main control chip U1 are connect with capacitor C8, and capacitor C8 is grounded after being connected with 23 pins of main control chip U1；Master control
39 pins of chip U1 are connect with resistance R17 and resistance R19, and 38 pins are connect with resistance R18 and resistance R16, resistance R18 and
Resistance R19 is connect after being connected with power supply processing module, and resistance R16 is grounded after being connected with resistance R17；48 pins of main control chip U1
It is connect with power supply processing module and capacitor C3, the both ends of capacitor C3 are in parallel with capacitor C20,44 pins and resistance of main control chip U1
47 pins of R28 connection, resistance R28 and capacitor C3 and main control chip U1 are grounded.
Optionally, the rectification circuit includes rectifier bridge D12, and rectifier bridge D12 is by the first rectifier diode, the second rectification two
Pole pipe, third rectifier diode and the 4th rectifier diode bridge-type are formed by connecting, the cathode of the first rectifier diode and second whole
The anode connection of diode is flowed, and draws 1 pin between the first rectifier diode and the second rectifier diode, third rectification two
The cathode of pole pipe is connect with the anode of the 4th rectifier diode, and is drawn between third rectifier diode and the 4th rectifier diode
The anode of 2 pin out, the first rectifier diode is connect with the positive of third rectifier diode, and in the first rectifier diode and the
4 pins are drawn between three rectifier diodes, the cathode of the second rectifier diode is connect with the cathode of the 4th rectifier diode, and
3 pins are drawn between second rectifier diode and the 4th rectifier diode；1 pin and 2 pins and external power supply of rectifier bridge D12
Connection, varistor RV7 are connected in parallel between 1 pin of rectifier bridge D12 and 2 pins, and transient supression diode D13 is connected in parallel on rectification
Between 3 pins and 4 pins of bridge D12,3 pins of rectifier bridge D12 are connect with fuse F1 and filter capacitor C14, filter capacitor
C14 is grounded after connecting with 4 pins of rectifier bridge D12, is parallel with filter capacitor C10, fuse F1 at the both ends of filter capacitor C14
It being connect respectively with the anode of diode D8 and diode D7, the cathode of diode D8 is connect by resistance R119 with reduction voltage circuit,
The cathode of diode D7 is connect with relay driving output module；The reduction voltage circuit includes decompression chip U4, inductance L1, two
The output end of pole pipe D9 and capacitor C15, one end and rectification circuit for being depressured chip U4 connect, at the other end and power supply of inductance L1
The output end connection of module is managed, diode D9 and capacitor C15 are connected to the both ends of inductance L1, are depressured 7 pins of chip U4
It is connect with current sense resistor R21,8 pins of decompression chip U4 are connect by pull-up resistor R4 with current sense resistor R21, electricity
The resistance R119 connection of the other end and rectification circuit of detection resistance R21 is flowed, 6 pins of chip U4 and the electricity of rectification circuit are depressured
R119 connection is hindered, and is grounded respectively by filter capacitor C13, filter capacitor C11 and filter capacitor C8,5 pipes of decompression chip U4
Foot is connect with feedback resistance R25 and feedback resistance R27, and 2 pins of feedback resistance R27 ground connection, decompression chip U4 pass through inductance L1
It is connect with resistance R20, output end of the other end of resistance R20 as power supply processing module, one end of inductance L1 passes through diode
D9 ground connection, is connect by 3V31 terminal with feedback resistance R25, the other end passes through capacitor respectively between capacitor C12 and capacitor C7
C15, capacitor C12, capacitor C7 and transient supression diode D10 ground connection, 3 pins of decompression chip U4 are grounded by capacitor C18,
4 pins of decompression chip U4 are directly grounded.
The communication type relay signal module that the utility model is created, communication module is by being connected to RS485 communication interface
The 485 chip U2 that are isolated between asynchronous receiving-transmitting transmitter carry out data conversion and transmission, can either be convenient for cascade expanding communication
Type relay signal module, and breaker controller or other main control devices can be allow by RS485 communication interface and led to
Believe module connection, have the characteristics that applicability is extensive, compatibility is strong, and 485 chip U2 are isolated to replace light-coupled isolation electricity
Magnetic disturbance does not need to distinguish wiring to each optocoupler, it is only necessary to which two communication lines are connect with RS485 communication interface can be to more
A relay is controlled, and has the characteristics that wiring quantity is few, can be convenient for the design and peace of communication type relay signal module
Dress.In addition, power supply processing module does not need power isolation module, have the characteristics that structure is simple, production cost is low.And pass through
Power supply processing module and relay driving output module are simultaneously integrated in first by the first pcb board and the first pcb board of split settings
On pcb board, on the second pcb board that main control unit module and communication module are integrated in, not only circuit is reasonably distributed, electromagnetism interference
Ability is strong, and can reduce pcb board horizontally the space occupied, reduces the volume of relay.
Detailed description of the invention
Fig. 1 is the schematic diagram that the utility model creates communication type relay signal module；
Fig. 2 is the circuit diagram that the utility model creates communication module；
Fig. 3 is the circuit diagram that the utility model creates main control unit module；
Fig. 4 is the circuit diagram that the utility model creates relay driving output module；
Fig. 5 is the circuit diagram that the utility model creates state indicator module；
Fig. 6 is the circuit diagram that the utility model creates power supply processing module.
Specific embodiment
Below in conjunction with the embodiment that attached drawing 1 to 6 provides, the communication type relay letter that the utility model is created is further illustrated
The specific embodiment of number module.The communication type relay signal module that the utility model is created is not limited to retouching for following embodiment
It states.
As shown in Figure 1, the communication type relay signal module that the utility model is created, including power supply processing module and master control
Unit module, and the communication module, multiple relay driving output modules and the multiple shapes that are connect respectively with main control unit module
State indicating module；
Main control unit module is connect by communication module with external host, the order sended over for receiving host and number
According to, and relay driving output module and state indicator module work are controlled, while passing feedback information back external host, power supply
Processing module is connect with external power supply, for convert external power supply offer voltage, with for main control unit module, communication module,
Relay driving output module and state indicator module power supply；As shown in Fig. 2, communication module includes connecting with external host
RS485 communication interface, the asynchronous receiving-transmitting transmitter (UART) being connect with main control unit module, and be connected to RS485 communication and connect
For mouth with the 485 chip U2 that are isolated between asynchronous receiving-transmitting transmitter, one end that 485 chip U2 are isolated passes through the first communication line RS485A
Connect with the second communication line RS485B with RS485 communication interface, the other end by UART_RX terminal, UART_CTL terminal and
UART_TX terminal is connect with asynchronous receiving-transmitting transmitter, and 485 chip U2 of isolation are used to pass in RS485 communication interface and asynchronous receiving-transmitting
The data conversion and transmission played the role of between defeated device, and prevent electromagnetic interference from entering the interior of communication type relay signal module
Portion's circuit, RS485 communication interface preferably use Modbus-RTU agreement, and the preferred model of model of 485 chip U2 is isolated
The RS485 power supply and signal-isolated transmission chip of ADM2587E, the ESD defencive function with+15kv, can be with outside
RS485 bus is isolated, and prevents external disturbance from entering communication module.
As shown in figure 3, main control unit module includes main control chip U1, main control chip U1 passes through 32 pins, 31 pins and 30
Pin connects with the UART_CTL terminal of the asynchronous receiving-transmitting transmitter of communication module, UART_RX terminal and UART_TX terminal respectively
It connects, for receiving the data of communication module transmission, main control chip U1 passes through 11 pins, 12 pins, 13 pins, 14 pins, 15 pipes
Foot and 16 pins are separately connected with six relay driving output modules, and each relay driving output module controls one respectively
Relay switches on and off, while main control chip U1 passes through 17 pins, 18 pins, 19, pin, 20 pins, 21 pins and 22
Pin is separately connected with seven state indicator modules, and six of them state indicator module is corresponding with relay one-to-one correspondence, is used for
The working condition of indicating relay, there are one the communications status that state indicator module is used to indicate main control module unit, certainly,
The communication type relay signal module that the utility model is created is not limited in the control to six relays, and relay driving is defeated
Module and the quantity of state indicator module can be adjusted according to the quantity of relay out, and the chip of main control chip U1 is preferably
STM32F051。
The communication type relay signal module that the utility model is created, communication module is by being connected to RS485 communication interface
The 485 chip U2 that are isolated between asynchronous receiving-transmitting transmitter carry out data conversion and transmission, can either be convenient for cascade expanding communication
Type relay signal module, and breaker controller or other main control devices can be allow by RS485 communication interface and led to
Believe module connection, have the characteristics that applicability is extensive, compatibility is strong, and 485 chip U2 are isolated to replace light-coupled isolation electricity
Magnetic disturbance does not need to distinguish wiring to each optocoupler, it is only necessary to which two communication lines are connect with RS485 communication interface can be to more
A relay is controlled, and has the characteristics that wiring quantity is few, can be convenient for the design and peace of communication type relay signal module
Dress.Usual relay signal module Shang You No. six relay exports, and has one in each relay signal module
The mailing address of Modbus, if necessary to be greater than No. 6 relays export, can by mounted in Modbus bus it is multiple after
Electrical signal module realizes cascade extension.
Further, the power supply processing module and relay driving output module are integrated on the first pcb board, master control
On the second pcb board that unit module and communication module are integrated in, the first pcb board is connect with the 2nd PCB plate, passes through split settings
The first pcb board and the first pcb board, not only circuit is reasonably distributed, anti-electromagnetic interference capability is strong, but also can be reduced pcb board and be existed
The space occupied in transverse direction reduces the volume of relay.
A kind of embodiment of communication module as shown in Figure 2,485 chip U2 of the isolation by common-mode filter L1 and
The connection of RS485 communication interface, the first winding of common-mode filter L1 are connected to 485 chip U2 of isolation and RS485 communication interface
Between RS485A terminal, the second winding of common-mode filter L1 is connected to 485 chip U2 of isolation and RS485 communication interface
Between RS485B terminal.It can be improved the effect of the electromagnetism interference of communication module, common-mode filter by common-mode filter L1
L1 is able to suppress the common mode interference in RS485 bus, improves the reliability of communication module.
Further, the first winding of the common-mode filter L1 passes through transient supression diode D11 and common-mode filter
The second winding of L1 connects, and one end of the first winding of common-mode filter L1 is grounded by transient supression diode D10, separately
One end is grounded by filter capacitor C26, and one end of the second winding of common-mode filter L1 is grounded by transient supression diode D9,
The other end is grounded by filter capacitor C25.Pass through transient supression diode D11, transient supression diode D10 and transient supression two
Pole pipe D9 can protect RS485 communication interface to avoid the effect for being further increased the electromagnetism interference of communication module by external interference
Fruit, transient supression diode D11 are able to suppress between two data lines of RS485 and cross transient over-voltage, transient supression diode
D10 is able to suppress the transient over-voltage between data line and ground level.
Specifically, 18 pins and 13 pins of 485 chip U2 of isolation are connect after being connected with source build-out resistor R43, source
Build-out resistor R43 is connect with the first winding of common-mode filter L1, and the first winding and filter capacitor of common-mode filter L1
It is grounded after C26 connection, filter capacitor C26 and 20 pins, 16 pins, 14 pins and the connection of 11 pins that 485 chip U2 are isolated,
The other end of the first winding of common-mode filter L1 is connect with the RS485A terminal of RS485 communication interface, and common-mode filter
The first winding of L1 by transient supression diode D10 be grounded, be isolated 485 chip U2 19 pins and 12 pins be connected after with it is upper
Pull-up resistor R27 is connected with filter capacitor C18, and pull-up resistor R27 is connect with source build-out resistor R43, filter capacitor C18's
Both ends are parallel with filter capacitor C17, filter capacitor C10 and filter capacitor C11, and 17 pins and 15 pins of 485 chip U2 are isolated
It is connected and is connect with source build-out resistor R44, source build-out resistor R44 is connect with the second winding of common-mode filter L1, and altogether
The second winding of mode filter L1 is connect with filter capacitor C25 and pull down resistor R32, pull down resistor R32 ground connection, filter capacitor
It C25 and is grounded after 20 pins of 485 chip U2,16 pins, 14 pins and the connection of 11 pins is isolated, the of common-mode filter L1
The other end of two windings is connect with the RS485B terminal of RS485 communication interface, and the second winding of common-mode filter L1 passes through
First winding of transient supression diode D9 ground connection, common-mode filter L1 passes through transient supression diode D11 and common-mode filter
The second winding of L1 connects, and terminal coupling resistance R42 is equipped between RS485A terminal and RS485B terminal, and 485 chip U2 are isolated
4 pins and communication module asynchronous receiving-transmitting transmitter UART_RX terminal connect, be isolated 485 chip U2 5 pins and 6 pipe
Foot is connect after being connected with the UART_CTL terminal of the asynchronous receiving-transmitting transmitter of communication module, and 7 pins of 485 chip U2 are isolated and lead to
The UART_TX terminal of the asynchronous receiving-transmitting transmitter of letter module connects, after 2 pins and 8 pins that 485 chip U2 are isolated are connected and electric
Resistance R41, filter capacitor C19 are connected with filter capacitor C12, and resistance R41 is connect with power supply processing module, filter capacitor C19 and filter
Wave capacitor C12 is grounded respectively, and is parallel with filter capacitor C13 at the both ends of filter capacitor C19, the two of filter capacitor C12
End is parallel with filter capacitor C16, and 1 pin, 4 pins, 9 pins and 10 pins of 485 chip U2 of isolation are grounded after being connected.
If Fig. 3 shows a kind of embodiment of main control unit module, the main control unit module include main control chip U1 with
And crystal oscillating circuit, reset circuit and the storage circuit connecting with main control chip U1, crystal oscillating circuit provide benchmark letter for main control chip
Number comprising 1 pin of the two sides the crystal oscillator CY1 and resistance R40 for being connected in parallel on the two sides crystal oscillator CY1, crystal oscillator CY1 and 3 pins difference
Connect with 5 pins of main control chip U1 and 6 pins, and 1 pin of the two sides crystal oscillator CY1 and 3 pins pass through respectively capacitor C23 and
It is grounded after crystal oscillator lead connection between capacitor C24 and 1 pin and 3 pins；Reset circuit includes connecting with power supply processing module
Resistance R23, the other end of resistance R23 is grounded by capacitor C7, is parallel with diode D8, diode at the both ends of resistance R23
The cathode of D8 is connect with 7 pins of main control chip U1；Storage circuit includes chip U3,1 pin and main control chip U1 of chip U3
35 pins connect and pass through resistance R36 and connect with power supply processing module, 3 pins of chip U3 and 36 pins of main control chip U1
And connect by resistance R37 with power supply processing module, 5 pins of chip U3 connect and pass through with 26 pins of main control chip U1
Resistance R38 is connect with power supply processing module, and 4 pins of chip U3 are connect with power supply processing module and capacitor C5, capacitor C5 and core
2 pins of piece U3 are grounded after being connected.
Further, 1 pin of the main control chip U1 is connect with power supply processing module and capacitor C2,2 pins and resistance
R31 connection, resistance R31 are grounded after being connected with capacitor C2；9 pins of main control chip U1 are connect with capacitor C6,10 pins and resistance
R22 connection, resistance R22 and capacitor C6 are grounded after being connected with 8 pins of main control chip U1；24 pins and electricity of main control chip U1
Hold C8 connection, capacitor C8 is grounded after being connected with 23 pins of main control chip U1；39 pins of main control chip U1 and resistance R17 and
Resistance R19 connection, 38 pins are connect with resistance R18 and resistance R16, resistance R18 and the connected rear and power supply processing mould of resistance R19
Block connection, resistance R16 are grounded after being connected with resistance R17；48 pins and power supply processing module and capacitor C3 of main control chip U1 connect
It connects, the both ends of capacitor C3 are in parallel with capacitor C20, and 44 pins of main control chip U1 are connect with resistance R28, resistance R28 and capacitor C3
It is grounded with 47 pins of main control chip U1.
The communication type relay signal module that the utility model is created includes multiple relay driving output modules, Mei Geji
Electrical equipment drive output module is for controlling a relay, as Fig. 4 shows the relay for controlling the first relay Relay1
Drive a kind of embodiment of output module, two normally opened contacts that R1_1 terminal and R2_2 terminal are the first relay Relay1
Output interface, for controlling switching on and off for peripheral hardware, which includes N-MOS pipe Q1, N-MOS pipe
The anode of Q1 is connect with the coil of the first relay Relay1, and cathode ground connection, control electrode passes through resistance R1's and main control chip U1
The connection of 11 pins, is parallel with resistance R16 and capacitor C1 in the cathode of N-MOS pipe Q1 and the both ends of control electrode, in the first relay
The both ends of the coil of Relay1 are parallel with diode D1.When main control unit module main control chip U1 input high level, N-MOS pipe
Q1 is in the conductive state, has electric current to pass through in the coil of the first relay Relay1, the contact closure of the first relay Relay1,
When main control chip U1 input low level, N-MOS pipe Q1 is in off state, no current in the coil of the first relay Relay1
Pass through, the contact of the first relay Relay1 disconnects.For controlling the second relay, third relay, the 4th relay etc.
The principle of other relay driving output modules of (not shown) with the relay for controlling the first relay Relay1
Device drives output module identical, is only connected on I/O port different on main control chip U1, and the relay of present embodiment drives
Dynamic output module does not need to control relay by relay driving chip, has the characteristics that production cost is low.
The communication type relay signal module that the utility model is created includes multiple master controls with main control unit module respectively
The state indicator module of chip U1 connection, multiple state indicator modules are respectively used to the working condition and master control list of indicating relay
The communications status of element module is used to indicate a kind of embodiment party of the state indicator module of the first relay Relay1 as Fig. 5 is shown
Formula, state indicator module are connect with the relay driving output module for controlling the first relay Relay1, and by same
A N-MOS pipe Q1 control, specifically, the state indicator module includes Light-emitting diode LED 1, Light-emitting diode LED 1 is just
Pole is connect by resistance R1 with power supply processing module, and cathode is connect with the anode of N-MOS pipe Q1, the cathode ground connection of N-MOS pipe Q1,
The control electrode of N-MOS pipe Q1 connect by resistance R4 with 17 pins of main control chip U1, the control electrode of N-MOS pipe Q1 with bear
The both ends of pole are parallel with resistance R29.It is used to indicate other states of the second relay, third relay, the 4th relay etc.
The principle of indicating module is identical as the state indicator module for being used to indicate the first relay Relay1, is only connected to master control core
On piece U1 on different I/O ports, furthermore state indicator module may be used to indicate that communications status, and principle is used for above-mentioned
Indicate that the state indicator module of the first relay is identical, instruction is controlled by 25 pins of main control chip U1.Preferably, originally
The communication type relay signal module that utility model is created further includes power indicating circuit, power indicating circuit include at power supply
The resistance and light emitting diode for managing the output end connection of module, are used to indicate the state of power supply.
If Fig. 6 shows a kind of embodiment of power supply processing module, power supply processing module includes rectification circuit and decompression electricity
Road.The rectification circuit includes turning for the varistor RV7 to circuit progress surge protection, the AC power source for that will input
Be changed to the rectifier bridge D12 of direct current, the filter capacitor C14 that the DC power signal for exporting to rectifier bridge D12 is filtered and
Filter capacitor C10, for circuit carry out overcurrent protection recoverable fuse F1, play buffer action diode D8,
The transient supression diode D13 of transient high voltages spike for suppression circuit, and connect with relay driving output module
Diode D7, rectifier bridge D12 by the first rectifier diode, the second rectifier diode, third rectifier diode and the 4th rectification
Diode bridge is formed by connecting, and the cathode of the first rectifier diode is connect with the anode of the second rectifier diode, and whole first
1 pin is drawn between stream diode and the second rectifier diode, the cathode of third rectifier diode and the 4th rectifier diode
Anode connection, and 2 pins are drawn between third rectifier diode and the 4th rectifier diode, the anode of the first rectifier diode
It is connect with the anode of third rectifier diode, and draws 4 pins between the first rectifier diode and third rectifier diode, the
The cathode of two rectifier diodes is connect with the cathode of the 4th rectifier diode, and in the second rectifier diode and the 4th two poles of rectification
3 pins are drawn between pipe；
1 pin and 2 pins of rectifier bridge D12 is connect with external power supply, and varistor RV7 is connected in parallel on 1 pipe of rectifier bridge D12
Between foot and 2 pins, transient supression diode D13 is connected in parallel between 3 pins of rectifier bridge D12 and 4 pins, and the 3 of rectifier bridge D12
Pin is connect with fuse F1 and filter capacitor C14, and filter capacitor C14 is grounded after connecting with 4 pins of rectifier bridge D12, is being filtered
The both ends of wave capacitor C14 are parallel with filter capacitor C10, and fuse F1 is connect with the anode of diode D8 and diode D7 respectively,
The cathode of diode D8 is connect by resistance R119 with reduction voltage circuit, and the cathode and relay driving output module of diode D7 connects
It connects.
The reduction voltage circuit includes the buck decompression electricity for being depressured chip U4, inductance L1, diode D9 and capacitor C15 composition
The output end on road, one end and rectification circuit for being depressured chip U4 connects, the output of the other end and power supply processing module of inductance L1
End connection, diode D9 and capacitor C15 are connected to the both ends of inductance L1, and the work of power supply can be improved using BUCK circuit
The model of efficiency, decompression chip U4 is preferably NCP3064.
Specifically, reduction voltage circuit further includes filter capacitor C12, filter capacitor C7, resistance R20, is used to stop decompression chip
U4 work current sense resistor R21, for be depressured chip U4 input filter capacitor filter capacitor C13, filter capacitor C11 and
Filter capacitor C8, positioned at high level when can trigger decompression chip U4 work pull-up resistor R4, for adjusting output voltage
The feedback resistance R25 and feedback resistance R27 of amplitude, it the capacitor C18 for adjusting decompression chip U4 internal switch pipe frequency, is used for
The transient supression diode D10 of transient suppression high voltage spike；
7 pins of decompression chip U4 are connect with current sense resistor R21, and 8 pins of decompression chip U4 pass through pull-up resistor
R4 is connect with current sense resistor R21, the resistance R119 connection of the other end and rectification circuit of current sense resistor R21, decompression
The resistance R119 connection of 6 pins and rectification circuit of chip U4, and pass through filter capacitor C13, filter capacitor C11 and filtering respectively
5 pins of capacitor C8 ground connection, decompression chip U4 are connect with feedback resistance R25 and feedback resistance R27, feedback resistance R27 ground connection, drop
2 pins of pressure chip U4 are connect by inductance L1 with resistance R20, output of the other end of resistance R20 as power supply processing module
End, one end of inductance L1 are grounded by diode D9, and the other end passes through capacitor C15, capacitor C12, capacitor C7 and transition suppression respectively
Diode D10 ground connection processed, is connect by 3V31 terminal with feedback resistance R25 between capacitor C12 and capacitor C7, to be depressured chip U4
Feedback voltage is provided, in order to burning voltage, 3 pins for being depressured chip U4 are grounded by capacitor C18,4 pipes of decompression chip U4
Foot is directly grounded, and the power supply processing module of present embodiment does not need power isolation module, has that structure is simple, production cost is low
The characteristics of.
The above content is the specific preferred embodiments of combination to create made further description to the utility model,
It cannot be assumed that the specific implementation that the utility model is created is only limited to these instructions.Affiliated technology neck is created for the utility model
For the those of ordinary skill in domain, without departing from the concept of the present invention, it can also make and several simply push away
It drills or replaces, all shall be regarded as belonging to the protection scope of the utility model creation.
Claims (10)
1. a kind of communication type relay signal module, it is characterised in that: including power supply processing module, main control unit module, communication
Module and the multiple relay driving output modules being connect respectively with multiple relays；
Power supply processing module includes rectification circuit and reduction voltage circuit, for driving for master control unit module, communication module and relay
Dynamic output module power supply；
Communication module includes the RS485 communication interface connecting with external host, the asynchronous receiving-transmitting connecting with main control unit module biography
Defeated device, and be connected between RS485 communication interface and asynchronous receiving-transmitting transmitter and 485 chip U2 are isolated；
Main control unit module includes main control chip U1 and the crystal oscillating circuit connecting with main control chip U1, reset circuit and storage electricity
Road, multiple pins of main control chip U1 are connect with multiple relay driving output modules respectively；
Main control unit module is connect by communication module with external host, and controls relay driving output module and state instruction
Module work.
2. communication type relay signal module according to claim 1, it is characterised in that: the power supply processing module and
Relay driving output module is integrated on the first pcb board, the second pcb board that main control unit module and communication module are integrated in
On, the first pcb board is connect with the second pcb board.
3. communication type relay signal module according to claim 1, it is characterised in that: 485 chip U2 of the isolation are logical
Common-mode filter L1 is crossed to connect with RS485 communication interface, the first winding of common-mode filter L1 be connected to isolation 485 chip U2 with
Between the RS485A terminal of RS485 communication interface, the second winding of common-mode filter L1 be connected to isolation 485 chip U2 with
Between the RS485B terminal of RS485 communication interface.
4. communication type relay signal module according to claim 3, it is characterised in that: the of the common-mode filter L1
One winding is connect by transient supression diode D11 with the second winding of common-mode filter L1, and the of common-mode filter L1
One end of one winding is grounded by transient supression diode D10, and the other end is grounded by filter capacitor C26, common-mode filter L1
One end of the second winding be grounded by transient supression diode D9, the other end is grounded by filter capacitor C25.
5. communication type relay signal module according to claim 1, it is characterised in that: further include it is multiple respectively with master control
The state indicator module of the main control chip U1 connection of unit module, multiple state indicator modules are respectively used to instruction and multiple relays
Device drives the working condition of multiple relays of output module connection and the communications status of main control unit module；The relay drives
Dynamic output module includes that the anode of N-MOS pipe Q1, N-MOS pipe Q1 is connected with the coil of corresponding relay, cathode ground connection, control
Pole is connect by resistance R1 with main control chip U1, is parallel with resistance R16 and electricity in the cathode of N-MOS pipe Q1 and the both ends of control electrode
Hold C1, is parallel with diode D1 at the both ends of the coil of corresponding relay；The state indicator module includes light emitting diode
The anode of LED1, Light-emitting diode LED 1 are connect by resistance R1 with power supply processing module, and the anode of cathode and N-MOS pipe Q1 are even
It connects, the cathode ground connection of N-MOS pipe Q1, the control electrode of N-MOS pipe Q1 passes through the connection of resistance R4 and main control chip U1, in N-MOS
The control electrode of pipe Q1 and the both ends of cathode are parallel with resistance R29.
6. communication type relay signal module according to claim 1, it is characterised in that: the crystal oscillating circuit includes crystal oscillator
The CY1 and resistance R40 for being connected in parallel on the two sides crystal oscillator CY1, the two sides of crystal oscillator CY1 are connect with main control chip respectively, and crystal oscillator CY1
Two sides pass through after capacitor C23 and capacitor C24 is connect with crystal oscillator lead respectively and be grounded；The reset circuit includes and power supply processing
The resistance R23 of module connection, the other end of resistance R23 are grounded by capacitor C7, are parallel with diode at the both ends of resistance R23
The cathode of D8, diode D8 are connect with main control chip U1；The storage circuit includes chip U3,1 pin, 3 pins of chip U3
It is connect respectively with main control chip U1 with 5 pins, also, 1 pin of chip U3,3 pins and 5 pins pass through resistance R36, electricity respectively
Resistance R37 and resistance R38 is connect with power supply processing module, and 4 pins of chip U3 are connect with power supply processing module and capacitor C5, capacitor
C5 is grounded after being connected with 2 pins of chip U3.
7. communication type relay signal module according to claim 1, it is characterised in that: the reduction voltage circuit includes decompression
The buck reduction voltage circuit of chip U4, inductance L1, diode D9 and capacitor C15 composition are depressured one end and the rectification circuit of chip U4
Output end connection, the output end of the other end of inductance L1 and power supply processing module connects, and diode D9 and capacitor C15 connect respectively
It connects at the both ends of inductance L1.
8. communication type relay signal module according to claim 1, it is characterised in that: 485 chip U2 of the isolation are logical
Common-mode filter L1 is crossed to connect with RS485 communication interface, the first winding of common-mode filter L1 be connected to isolation 485 chip U2 with
Between the RS485A terminal of RS485 communication interface, the second winding of common-mode filter L1 be connected to isolation 485 chip U2 with
Between the RS485B terminal of RS485 communication interface；The first winding of common-mode filter L1 passes through transient supression diode D11 together
The second winding of mode filter L1 connects, and one end of the first winding of common-mode filter L1 passes through transient supression diode
D10 ground connection, the other end are grounded by filter capacitor C26, and one end of the second winding of common-mode filter L1 passes through transient supression two
Pole pipe D9 ground connection, the other end are grounded by filter capacitor C25；After 18 pins and 13 pins that 485 chip U2 are isolated are connected and source
Build-out resistor R43 connection is held, source build-out resistor R43 is connect with the first winding of common-mode filter L1, and common-mode filter
The first winding of L1 is connect with filter capacitor C26, filter capacitor C26 and 20 pins, 16 pins, 14 pipes that 485 chip U2 are isolated
It is grounded after foot and the connection of 11 pins, the other end of the first winding of common-mode filter L1 and the end RS485A of RS485 communication interface
Son connection, and the first winding of common-mode filter L1 is grounded by transient supression diode D10, the 19 of 485 chip U2 of isolation
Pin and 12 pins are connect after being connected with pull-up resistor R27 and filter capacitor C18, pull-up resistor R27 and source build-out resistor R43
Connection is parallel with filter capacitor C17, filter capacitor C10 and filter capacitor C11 at the both ends of filter capacitor C18,485 cores is isolated
17 pins and 15 pins of piece U2 are connected to be connect with source build-out resistor R44, source build-out resistor R44 and common-mode filter L1's
The connection of second winding, and the second winding of common-mode filter L1 is connect with filter capacitor C25 and pull down resistor R32, drop-down electricity
R32 ground connection is hindered, is grounded after filter capacitor C25 and 20 pins, 16 pins, 14 pins and the connection of 11 pins that 485 chip U2 are isolated,
The other end of the second winding of common-mode filter L1 is connect with the RS485B terminal of RS485 communication interface, and common-mode filter
The second winding of L1 is grounded by transient supression diode D9, and terminal coupling electricity is equipped between RS485A terminal and RS485B terminal
R42 is hindered, the UART_RX terminal that 4 pins of 485 chip U2 and the asynchronous receiving-transmitting transmitter of communication module are isolated connects, isolation 485
5 pins and 6 pins of chip U2 are connect after being connected with the UART_CTL terminal of the asynchronous receiving-transmitting transmitter of communication module, are isolated
The UART_TX terminal of the asynchronous receiving-transmitting transmitter of 7 pins and communication module of 485 chip U2 connects, and the 2 of 485 chip U2 of isolation
Pin and 8 pins are connect after being connected with resistance R41, filter capacitor C19 and filter capacitor C12, resistance R41 and power supply processing module
Connection, filter capacitor C19 and filter capacitor C12 are grounded respectively, and are parallel with filter capacitor at the both ends of filter capacitor C19
C13 is parallel with filter capacitor C16 at the both ends of filter capacitor C12,1 pin, 4 pins, 9 pins and 10 of 485 chip U2 is isolated
Pin is grounded after being connected.
9. communication type relay signal module according to claim 1, it is characterised in that: the crystal oscillating circuit includes crystal oscillator
1 pin and 3 pins of the two sides the CY1 and resistance R40 for being connected in parallel on the two sides crystal oscillator CY1, crystal oscillator CY1 are respectively with main control chip U1's
5 pins and the connection of 6 pins, and 1 pin of the two sides crystal oscillator CY1 and 3 pins pass through capacitor C23 and capacitor C24 and 1 pin respectively
And it is grounded after the 3 crystal oscillator lead connection between pin；Reset circuit includes the resistance R23 connecting with power supply processing module, resistance
The other end of R23 is grounded by capacitor C7, is parallel with diode D8, the cathode of diode D8 and master control at the both ends of resistance R23
7 pins of chip U1 connect；Storage circuit includes chip U3, and 1 pin of chip U3 is connect simultaneously with 35 pins of main control chip U1
It is connect by resistance R36 with power supply processing module, 3 pins of chip U3 and 36 pins of main control chip U1 simultaneously pass through resistance R37
It is connect with power supply processing module, 5 pins of chip U3 connect with 26 pins of main control chip U1 and by resistance R38 and power supply
Processing module connection, 4 pins of chip U3 are connect with power supply processing module and capacitor C5, the 2 pin phases of capacitor C5 and chip U3
It is grounded after even；1 pin of main control chip U1 is connect with power supply processing module and capacitor C2, and 2 pins are connect with resistance R31, resistance
R31 is grounded after being connected with capacitor C2；9 pins of main control chip U1 are connect with capacitor C6, and 10 pins are connect with resistance R22, resistance
R22 and capacitor C6 is grounded after being connected with 8 pins of main control chip U1；24 pins of main control chip U1 are connect with capacitor C8, capacitor
C8 is grounded after being connected with 23 pins of main control chip U1；39 pins of main control chip U1 are connect with resistance R17 and resistance R19, and 38
Pin is connect with resistance R18 and resistance R16, and resistance R18 and resistance R19 are connect after being connected with power supply processing module, resistance R16 with
Resistance R17 is grounded after being connected；48 pins of main control chip U1 are connect with power supply processing module and capacitor C3, the both ends of capacitor C3 with
Capacitor C20 is in parallel, and 44 pins of main control chip U1 are connect with resistance R28, and resistance R28 and capacitor C3 draw with the 47 of main control chip U1
Foot ground connection.
10. communication type relay signal module according to claim 1, it is characterised in that: the rectification circuit includes whole
Bridge D12 is flowed, rectifier bridge D12 is by the first rectifier diode, the second rectifier diode, third rectifier diode and the 4th two poles of rectification
Pipe bridge formula is formed by connecting, and the cathode of the first rectifier diode is connect with the anode of the second rectifier diode, and rectifies two first
1 pin, the anode of the cathode of third rectifier diode and the 4th rectifier diode are drawn between pole pipe and the second rectifier diode
Connection, and draws 2 pins between third rectifier diode and the 4th rectifier diode, the anode of the first rectifier diode and the
The anode connection of three rectifier diodes, and 4 pins are drawn between the first rectifier diode and third rectifier diode, second is whole
The cathode of stream diode is connect with the cathode of the 4th rectifier diode, and the second rectifier diode and the 4th rectifier diode it
Between draw 3 pins；1 pin and 2 pins of rectifier bridge D12 is connect with external power supply, and varistor RV7 is connected in parallel on rectifier bridge D12
1 pin and 2 pins between, transient supression diode D13 is connected in parallel between 3 pins of rectifier bridge D12 and 4 pins, rectifier bridge
3 pins of D12 are connect with fuse F1 and filter capacitor C14, and filter capacitor C14 connect with 4 pins of rectifier bridge D12 and is followed by
Ground is parallel with filter capacitor C10 at the both ends of filter capacitor C14, fuse F1 respectively with diode D8 and diode D7 just
The cathode of pole connection, diode D8 is connect by resistance R119 with reduction voltage circuit, and the cathode and relay driving of diode D7 is defeated
Module connects out；The reduction voltage circuit includes decompression chip U4, inductance L1, diode D9 and capacitor C15, is depressured the one of chip U4
End connect with the output end of rectification circuit, the output end connection of the other end of inductance L1 and power supply processing module, diode D9 with
Capacitor C15 is connected to the both ends of inductance L1, and 7 pins of decompression chip U4 are connect with current sense resistor R21, is depressured chip
8 pins of U4 are connect by pull-up resistor R4 with current sense resistor R21, the other end and rectified current of current sense resistor R21
The resistance R119 connection on road, is depressured the resistance R119 connection of 6 pins and rectification circuit of chip U4, and passes through filter capacitor respectively
C13, filter capacitor C11 and filter capacitor C8 ground connection, 5 pins and feedback resistance R25 and feedback resistance R27 for being depressured chip U4 connect
It connects, 2 pins of feedback resistance R27 ground connection, decompression chip U4 are connect by inductance L1 with resistance R20, and the other end of resistance R20 is made
One end for the output end of power supply processing module, inductance L1 is grounded by diode D9, is passed through between capacitor C12 and capacitor C7
3V31 terminal is connect with feedback resistance R25, and the other end passes through capacitor C15, two pole capacitor C12, capacitor C7 and transient supression respectively
3 pins of pipe D10 ground connection, decompression chip U4 are grounded by capacitor C18, and 4 pins of decompression chip U4 are directly grounded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820696972.2U CN208834986U (en) | 2018-05-10 | 2018-05-10 | Communication type relay signal module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820696972.2U CN208834986U (en) | 2018-05-10 | 2018-05-10 | Communication type relay signal module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111639048A (en) * | 2020-05-29 | 2020-09-08 | 意诺科技有限公司 | Intelligent equipment control panel and system |
| CN115967707A (en) * | 2022-12-06 | 2023-04-14 | 浙江桃园智能科技有限公司 | Digital communication protocol drive circuit |
-
2018
- 2018-05-10 CN CN201820696972.2U patent/CN208834986U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111639048A (en) * | 2020-05-29 | 2020-09-08 | 意诺科技有限公司 | Intelligent equipment control panel and system |
| CN115967707A (en) * | 2022-12-06 | 2023-04-14 | 浙江桃园智能科技有限公司 | Digital communication protocol drive circuit |
| CN115967707B (en) * | 2022-12-06 | 2023-10-20 | 浙江桃园智能科技有限公司 | Digital communication protocol driving circuit |
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