CN206251104U - A kind of TTL interface time service modules of high density output - Google Patents
A kind of TTL interface time service modules of high density output Download PDFInfo
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- CN206251104U CN206251104U CN201621292036.2U CN201621292036U CN206251104U CN 206251104 U CN206251104 U CN 206251104U CN 201621292036 U CN201621292036 U CN 201621292036U CN 206251104 U CN206251104 U CN 206251104U
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Abstract
The utility model discloses a kind of TTL interface time service modules of high density output, including the first drive module, optical coupling module, second drive module, electrostatic protection module, insulating power supply module, first signal input part, secondary signal input and signal output part, first signal input terminates the input of the first drive module, the output end of the first drive module is connected with the first input end of optical coupling module, the output end of optical coupling module is connected with the first input end of the second drive module, the output termination electrostatic protection module of the second drive module is simultaneously connected with signal output part, the input of secondary signal input termination insulating power supply module, first output end of insulating power supply module exports the first insulating power supply to the second input of optical coupling module, second output end exports the second input of the second insulating power supply to the second drive module.The utility model structure is excellent, low cost, is capable of achieving time service while multiple signals, and the degree of accuracy is high, in can be widely applied to time service field.
Description
Technical field
The utility model is related to the time service field of electric power or the communications industry, more particularly to a kind of TTL of high density output
Interface time service module.
Background technology
Explanation of nouns：
Transistor-Transistor Logic level：Meet certain level demand（Output logic 1:2.4V ~ 5V, exports logical zero: 0V~0.4V；Input is patrolled
Collect 1:2V ~ 5V, input logic 0: 0V~0.8V）Signaling interface；
Pulse per second (PPS) 1PPS：A kind of time reference signal, a pulse per second；
Sectors rushes 1PPM：A kind of time reference signal, a pulse per minute；
When pulse 1PPH：A kind of time reference signal, per hour a pulse.
It is the computer on INTERNET that time synchronized is most widely used.Computer clock be used for record event when
Between information, such as E-MAIL information, document creation and access time, database processing time.Clock is also used for control backup
Operation, check whether file changed and other application for the automatic construction compiler of design.If computer clock is not smart
Really, then much will be unable to normal work in these applications.To the computer system of time-sensitive, such as financial industry server,
EDI, large-scale distributed business database, space flight and aviation control computer etc., with greater need for high-precision temporal information.Communications and transportation
The time display system of industry, such as subway timetable display system, airport timetable display system, if deviation is larger, may
Influence the travelling of passenger.Nowadays, increasing communication and power equipment be required for high-precision temporal information carry out time service with
Maintain normal work, and at present major part time service module only export time signal all the way, when multichannel time signal is needed, it is necessary to
It is relatively costly using multiple time service modules, and time delay is there may be between each road time signal, poor consistency causes time service
Result is undesirable.
Utility model content
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of TTL interfaces of high density output
Time service module.
The utility model solves the technical scheme that its technical problem used：
A kind of TTL interface time service modules of high density output, including the first drive module, optical coupling module, the second driving mould
It is block, electrostatic protection module, insulating power supply module, the first signal input part for accessing original time signal, straight for accessing
Flow the secondary signal input and the signal output part for output multi-channel TTL time signals of working power, first letter
Number input connects the input of the first drive module, the output end of first drive module and the first input of optical coupling module
End connection, the output end of the optical coupling module is connected with the first input end of the second drive module, second drive module
Output end connects electrostatic protection module and is connected with signal output part, the secondary signal input connection insulating power supply module
Input, the first output end of the insulating power supply module exports the first insulating power supply to the second input of optical coupling module, institute
The second output end for stating insulating power supply module exports the second input of the second insulating power supply to the second drive module.
Further, first drive module is constituted using four No. six phase inverters, this four inputs of No. six phase inverters
Pin is connected with the first signal input part, and the output end of first drive module includes 20 output ports, and each is exported
Port is an output pin of No. six phase inverters.
Further, the optical coupling module include 20 light-coupled isolation loops, the light-coupled isolation loop include photo-coupler,
Protective resistance, shunt capacitance and pull-up resistor, a termination DC supply of the protective resistance, the other end and photo-coupler
Second pin connection, the 3rd pin of the photo-coupler connects an output port of the first drive module, the optical coupling
8th pin of device is connected with the first insulating power supply, and the 8th pin also passes through shunt capacitance with the first insulating power supply altogether, institute
The 6th pin for stating photo-coupler is connected by pull-up resistor with the first insulating power supply, and the 6th pin is used as the light-coupled isolation
The output port in loop is connected with the first input end of the second drive module, and the 5th pin of the photo-coupler is isolated with first
Power supply is altogether.
Further, second drive module is constituted using four No. six phase inverters, and this four No. six phase inverters its
In 20 pairs of input pins and output pin respectively as the second drive module 20 input ports and 20 output ports, each
Output port is connected with the signal output part.
Further, the electrostatic protection module is constituted using static suppressor.
The beneficial effects of the utility model are：A kind of TTL interface time service modules of high density output of the present utility model, bag
Include the first drive module, optical coupling module, the second drive module, electrostatic protection module, insulating power supply module, for accessing original when
Between the first signal input part of signal, the secondary signal input for accessing DC supply and for output multi-channel
The signal output part of TTL time signals, the first signal input part connects the input of the first drive module, the first drive module
Output end is connected with the first input end of optical coupling module, and the output end of optical coupling module connects with the first input end of the second drive module
Connect, the output end connection electrostatic protection module of the second drive module is simultaneously connected with signal output part, the connection of secondary signal input
The input of insulating power supply module, the first output end of insulating power supply module exports the first insulating power supply to the second of optical coupling module
Input, the second output end of insulating power supply module exports the second input of the second insulating power supply to the second drive module.This
Utility model structure is excellent, reduces production application cost, it is possible to achieve time service while multiple signals, and each road TTL times believe
There is unified synchronousness, the degree of accuracy is high between number.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is a kind of electronic block diagrams of the TTL interface time service modules of high density output of the present utility model；
Fig. 2 is a kind of principle of the first drive module of the TTL interface time service modules of high density output of the present utility model
Figure；
Fig. 3 is a kind of schematic diagram of the optical coupling module of the TTL interface time service modules of high density output of the present utility model；
Fig. 4 is a kind of principle of the second drive module of the TTL interface time service modules of high density output of the present utility model
Figure；
Fig. 5 is a kind of principle of the electrostatic protection module of the TTL interface time service modules of high density output of the present utility model
Figure.
Specific embodiment
Reference picture 1, the utility model provides a kind of TTL interface time service modules of high density output, including first drives
Module, optical coupling module, the second drive module, electrostatic protection module, insulating power supply module, for access original time signal
One signal input part IN1, the secondary signal input IN2 for accessing DC supply and during for output multi-channel TTL
Between signal signal output part, the first signal input part IN1 connects the input of the first drive module, and described first drives
The output end of module is connected with the first input end of optical coupling module, and the of the output end of the optical coupling module and the second drive module
One input is connected, and the output end connection electrostatic protection module of second drive module is simultaneously connected with signal output part, described
Secondary signal input IN2 connects the input of insulating power supply module, the first output end output the of the insulating power supply module
To the second input of optical coupling module, the second output end of the insulating power supply module exports the second insulating power supply to one insulating power supply
To the second input of the second drive module.
It is further used as preferred embodiment, first drive module uses four connection sides as shown in Fig. 2 circuits
Shi No. six phase inverters are constituted, and this four input pins of No. six phase inverters are connected with the first signal input part IN1, and described first
The output end of drive module includes 20 output ports, and each output port is an output pin of No. six phase inverters.
It is further used as preferred embodiment, the optical coupling module includes 20 light-coupled isolation loops, the institute of reference picture 3
Show, the light-coupled isolation loop includes photo-coupler, protective resistance, shunt capacitance and pull-up resistor, the one of the protective resistance
Termination DC supply, the other end is connected with the second pin of photo-coupler, and the 3rd pin of the photo-coupler connects the
One output port of one drive module, the 8th pin of the photo-coupler is connected with the first insulating power supply, and the 8th pin is also
By shunt capacitance and the first insulating power supply altogether, the 6th pin of the photo-coupler isolates electricity by pull-up resistor with first
Source connects, and the 6th pin connects as the output port in the light-coupled isolation loop and the first input end of the second drive module
Connect, the 5th pin of the photo-coupler and the first insulating power supply are altogether.
It is further used as preferred embodiment, second drive module is using four connected modes as shown in Figure 4
No. six phase inverters are constituted, and this four the wherein 20 pairs input pins and output pin of No. six phase inverters drive respectively as second
20 input ports and 20 output ports of module, each output port are connected with the signal output part.
It is further used as preferred embodiment, the electrostatic protection module uses static suppressor structure as shown in Figure 5
Into.
Below in conjunction with specific embodiment, the utility model is described in further detail.
Reference picture 1, a kind of TTL interface time service modules of high density output, including the first drive module, optical coupling module, the
Two drive modules, electrostatic protection module, insulating power supply module, the first signal input part IN1 for accessing original time signal,
Secondary signal input IN2 and the signal output for output multi-channel TTL time signals for accessing DC supply
End, the first signal input part IN1 connects the input of the first drive module, output end and the optical coupling module of the first drive module
First input end is connected, and the output end of optical coupling module is connected with the first input end of the second drive module, the second drive module
Output end connects electrostatic protection module and is connected with signal output part, secondary signal input IN2 connection insulating power supply modules
Input, the first output end of insulating power supply module exports the first insulating power supply to the second input of optical coupling module, isolation electricity
Second output end of source module exports the second input of the second insulating power supply to the second drive module.In Fig. 1, original time letter
Number and DC supply provided by a time signal source.DC supply is the DC voltage of 5V.
First drive module is constituted using No. six phase inverters of four connected modes as shown in Fig. 2 circuits, four six tunnels
The input pin of phase inverter is connected with the first signal input part IN1, and the output end of the first drive module includes 20 output ports,
And each output port is an output pin of No. six phase inverters.In Fig. 2, OUT_TIME represents original time signal, and six tunnels are anti-
Preceding 5 output pins of phase device U1 are used as output port, output signal OUT_TIME1, OUT_TIME2, OUT_TIME3, OUT_
TIME4 and OUT_TIME5, similar, four No. six phase inverters all select preceding 5 output pins as output port, last structure
Into the first drive module with 20 output ends of output port.Preferably, the first drive module uses model
No. six phase inverters of SN74HC04 are constituted, its original time signal that is input into can be carried out it is anti-phase, and output signal tool
There is stronger carrying load ability.
In the present embodiment, optical coupling module includes 20 light-coupled isolation loops, shown in reference picture 3, each light-coupled isolation loop
Including photo-coupler U2, protective resistance R1, shunt capacitance C2 and pull-up resistor R2, a termination 5V DC operations of protective resistance R1
Power supply, the other end is connected with the second pin of photo-coupler, and the one of the 3rd pin first drive module of connection of photo-coupler is defeated
Exit port, the 8th pin of photo-coupler is connected with the first insulating power supply, and the 8th pin also passes through shunt capacitance C2 and first
Altogether, the 6th pin of photo-coupler is connected insulating power supply by pull-up resistor R2 with the first insulating power supply, and the 6th pin is made
For the output port in light-coupled isolation loop is connected with the first input end of the second drive module, the 5th pin of photo-coupler and
One insulating power supply is altogether.In Fig. 3, TTL_GND represents the ground of the first insulating power supply, and TTL_VCC represents the first insulating power supply, is used for
Voltage is provided.In Fig. 3, the time signal OUT_TIME1 exported from an output port of the first drive module is exported to optical coupling
After device U2, being optically coupled device U2 carries out electrical isolation, then exports the time signal TIME1 to second after electrical isolation and drives mould
Block.Preferably using the high speed photo coupling chip of model 6N137, switching rate is up to 10Mbps to photo-coupler U2, and time delay is small, it is ensured that
This TTL interfaces time service module has time accuracy higher.
Second drive module is constituted using No. six phase inverters of four connected modes as shown in Figure 4, and four six tunnels are anti-
The wherein 20 pairs input pins and output pin of phase device are exported respectively as 20 input ports of the second drive module and 20
Port, each output port is connected with signal output part.Corresponding, signal output part also has 20 ports, each port
It is connected with an output port of the second drive module.For example in Fig. 4, preceding 5 pairs of input and output pins of selection No. six phase inverter U3
Used as input port and output port, time signal TIME1, TIME2 that will be input into, TIME3, TIME4 and TIME5 are improved and driven
After ability, road TTL time signal TTL1, TTL2 of output 5, TTL3, TTL4 and TTL5.Therefore, using four connections as shown in Figure 4
No. six phase inverters of mode constitute the second drive module can export TTL1 ~ TTL20 totally 20 road TTL time signals.Preferably,
No. six phase inverters that two drive modules are also adopted by model SN74HC04 are constituted.In Fig. 4, the 5V voltages that No. six phase inverter U3 are accessed
For the second insulating power supply that the second output end of insulating power supply module is exported.
In the present embodiment, electrostatic protection module is constituted using static suppressor U4 as shown in Figure 5, for protecting second to drive
The TTL time signals of dynamic model block output do not receive electrostatic interference and destruction.3rd pin of static suppressor U4 and the 8th pin and
First insulating power supply is altogether.The static suppressor U4 of Fig. 5 can protect 4 road TTL time signals, therefore need 5 electrostatic to press down altogether
Device U4 processed protects the 20 tunnel time signals of this time service module.Preferably, the static suppressor U4 of Fig. 5 uses model
The chip of RCLAMP0524.
First drive module is used to for the original time signal on 1 tunnel to be transformed into the anti-phase letter of the time with function of the same race
Number, and improve after signal driving force output to optical coupling module.Optical coupling module is used for being carried out electrically per time signal all the way
Isolation and amplifier, produces the time signal with function of the same race to the second drive module, the second drive module to export optical coupling module
Carry out driving force that is anti-phase and improving signal per time signal all the way, by it is anti-phase twice can be with original time signal electricity
It is flat to keep in the same direction.Electrostatic protection module is used to protect 20 road TTL time signals of the second drive module output not receive electrostatic interference
And destruction.
This time service module by by original time signal through the first drive module be converted into 20 tunnels have function of the same race when
Between signal, then the tunnel time signals of Jiang Gai 20 by optical coupling module produce with identical function, electrical isolation time signal, then
The time signal that optical coupling module is exported is believed by obtaining for 20 road TTL times after the second drive module promotion signal driving force
Number, then protected via electrostatic protection module, externally exported by signal output part through the TTL time signals after electrostatic protection
20 road TTL time signals carry out time service.This time service module structure is excellent, can be integrated in W482.6mm X D291.0mm X
On the time synchronism equipment of H132.75mm, and with 20 tunnel high density output ports, 20 road TTL of each output port output
There is unified synchronousness, it is possible to achieve time service while preferable multiple signals between time signal, reduce production
Application cost.Collecting cost time service module on the time synchronism equipment of equal volume can realize that a time synchronism equipment meets more
More by the demand of time service equipment, the market competitiveness of time synchronism equipment is greatly lifted.
Above is preferable implementation of the present utility model is illustrated, but the invention is not limited to implement
Example, those of ordinary skill in the art can also be made on the premise of without prejudice to the utility model spirit a variety of equivalent variations or
Replace, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (5)
1. TTL interface time service modules of a kind of high density output, it is characterised in that including the first drive module, optical coupling module, the
Two drive modules, electrostatic protection module, insulating power supply module, the first signal input part for accessing original time signal, use
In the secondary signal input and the signal output part for output multi-channel TTL time signals that access DC supply, institute
State the input that the first signal input part connects the first drive module, output end and the optical coupling module of first drive module
First input end is connected, and the output end of the optical coupling module is connected with the first input end of the second drive module, and described second drives
The output end connection electrostatic protection module of dynamic model block is simultaneously connected with signal output part, the secondary signal input connection isolation electricity
The input of source module, the first output end of the insulating power supply module exports the first insulating power supply to the second defeated of optical coupling module
Enter end, the second output end of the insulating power supply module exports the second input of the second insulating power supply to the second drive module.
2. the TTL interface time service modules that a kind of high density according to claim 1 is exported, it is characterised in that described first
Drive module is constituted using four No. six phase inverters, and the input pin and the first signal input part of this four No. six phase inverters connect
Connect, the output end of first drive module includes 20 output ports, and each output port is the defeated of No. six phase inverters
Go out pin.
3. the TTL interface time service modules that a kind of high density according to claim 2 is exported, it is characterised in that the optocoupler
Module includes 20 light-coupled isolation loops, and the light-coupled isolation loop includes photo-coupler, protective resistance, shunt capacitance and pull-up
Resistance, a termination DC supply of the protective resistance, the other end is connected with the second pin of photo-coupler, the optocoupler
3rd pin of clutch connects an output port of the first drive module, and the 8th pin of the photo-coupler isolates electricity with first
Source connects, and the 8th pin also passes through shunt capacitance with the first insulating power supply altogether, and the 6th pin of the photo-coupler passes through
Pull-up resistor is connected with the first insulating power supply, and the 6th pin drives as the output port in the light-coupled isolation loop and second
The first input end connection of module, the 5th pin of the photo-coupler and the first insulating power supply are altogether.
4. the TTL interface time service modules that a kind of high density according to claim 2 is exported, it is characterised in that described second
Drive module is constituted using four No. six phase inverters, and this four the wherein 20 pairs input pins and output pin of No. six phase inverters
Respectively as 20 input ports and 20 output ports of the second drive module, each output port with the signal output
End connection.
5. the TTL interface time service modules that a kind of high density according to claim 2 is exported, it is characterised in that the electrostatic
Protection module is constituted using static suppressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621292036.2U CN206251104U (en) | 2016-11-29 | 2016-11-29 | A kind of TTL interface time service modules of high density output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621292036.2U CN206251104U (en) | 2016-11-29 | 2016-11-29 | A kind of TTL interface time service modules of high density output |
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| Publication Number | Publication Date |
|---|---|
| CN206251104U true CN206251104U (en) | 2017-06-13 |
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|---|---|---|---|
| CN201621292036.2U Active CN206251104U (en) | 2016-11-29 | 2016-11-29 | A kind of TTL interface time service modules of high density output |
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| Country | Link |
|---|---|
| CN (1) | CN206251104U (en) |
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2016
- 2016-11-29 CN CN201621292036.2U patent/CN206251104U/en active Active
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