CN208094688U - Multichannel audio-video frequency On-line Product aging switching circuit with interlock function - Google Patents
Multichannel audio-video frequency On-line Product aging switching circuit with interlock function Download PDFInfo
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- CN208094688U CN208094688U CN201820397291.6U CN201820397291U CN208094688U CN 208094688 U CN208094688 U CN 208094688U CN 201820397291 U CN201820397291 U CN 201820397291U CN 208094688 U CN208094688 U CN 208094688U
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Abstract
The multichannel audio-video frequency On-line Product aging switching circuit with interlock function that the utility model discloses a kind of, including the signal input sources of at least two audio and video equipments, at least two relays, at least two switches, a signal output source and a DC power supply；Relay includes four contacts, and four contacts are normally open under obstructed electricity condition；First contact of each relay is correspondingly connected with a switch, connects between second contact of each relay, and connect with DC power supply；The signal input sources of each audio and video equipment are correspondingly connected with one end of the third and fourth two contacts of relay, the other end connection signal output source of the third and fourth two contacts.By the circuit arrangement of the utility model, the Centralized Monitoring of sound to multichannel or batch, video product is realized, monitoring personnel need not enter back into chamber or climbing ageing rack is monitored, while need not also plug AV signal connecting lines one by one again.
Description
Technical field
The utility model is related to tv broadcasting technology fields, and in particular to a kind of multichannel audio-video frequency production with interlock function
The online aging switching circuit of product.
Background technology
The intrinsic key function of audio and video equipment exactly meets user and is required in audio and video, and popular understanding is exactly
The requirement of sound and image；To ensure this nonnegotiable demands of product, lasting, stable, reliable guarantee, usual audio and video production are obtained
Product can carry out it room temperature, high temperature or low-temperature working aging in research and development, sample sizing, limited-run trial production or batch the delivery stage.
The prior art typically uses step-by-step movement high and low temperature senile experiment case or room temperature ageing rack to carry out product batch old
Change, by arrange special messenger to sound, video product, in experimental box, on ageing rack or high and low temperature experiment after in natural ring
Product progress signal patches to monitor one by one in border, to find product problem in ageing process in time.But because
High and low temperature experimental box is relatively closed, into high and low temperature experimental box continue working, easily leads to personnel's senestopathia, discomfort, time
There are health of human body, security risks for one length；Room temperature ageing rack is generally multilayer, overhead, repeatedly round-trip climbing, and it is hidden that there is also safety
Suffer from；In addition, audio and video equipment need to use RF and AV lines to carry out signal source transmission, checked by television set or monitor, it is existing
There is technology, needs the one-to-one progress AV wire insertion of product, connection one by one, frequent switching is time-consuming and laborious, and working efficiency is low, increases
Add the cost of human resources of enterprise.Meanwhile the aging of product terminates re-test ageing results after power down, can not illustrate its aging
The validity of middle product.
Utility model content
The utility model overcomes the deficiencies in the prior art, provides a kind of multichannel audio-video frequency product with interlock function and exists
Line aging switching circuit.To problems of the prior art to be solved, monitoring personnel is avoided to be tested for a long time in high and low temperature
In case or on room temperature ageing rack, the mode by plugging, connecting AV signal wires one by one could realize the demand of real time monitoring；It improves
While person works' efficiency, reduce because of the problem of personnel caused by the factor are easy to run off.Realize on-line monitoring aging equipment.
In order to solve the above technical problems, the utility model uses following technical scheme：
A kind of multichannel audio-video frequency On-line Product aging switching circuit with interlock function, including the production of at least two audio and video
The signal input sources of product, at least two relays, at least two switches, a signal output source and a DC power supply；It is described
Relay include four contacts, four contact under obstructed electricity condition, be normally open；The first of each relay
A contact is correspondingly connected with a switch, is connected between second contact of each relay, and with the direct current
Source connects；The signal input sources of each audio and video equipment are correspondingly connected with the third and fourth two contacts of relay
The other end of one end, the third and fourth two contacts connects the signal output source.
Further technical solution be further include at least two LED, each LED is correspondingly connected with a relay
4th contact of device.
Further technical solution be further include current-limiting resistance, what the current-limiting resistance was connected to that the LED formed returns
Lu Zhong.
Further technical solution is that the switch is single-point touch switch.
Further technical solution is that the relay is four dpdt double-pole double-throw (DPDT) relays.
It includes Video, Audio L/R signal input sources, institute that further technical solution, which is the signal input sources,
State Video, Audio L/R signal input sources are separately connected a relay contact.
Compared with prior art, one of the advantageous effect of the utility model embodiment is：Pass through the circuit of the utility model
Scheme, realizes the Centralized Monitoring of sound to multichannel or batch, video product, and monitoring personnel need not enter back into chamber or climb
It climbs ageing rack to be monitored, while need not also plug AV signal connecting lines one by one again；By this control switching circuit, using light
It touches switching manipulation switching to can be realized to every test products, any selectable mode in real time that carries out monitors；Reduce monitoring
The working strength of personnel, while monitoring efficiency is improved, realize the judgement of the feasibility of batch aging product.
In addition, by the circuit arrangement of the utility model, realize to all test products, can carry out freely, arbitrarily, nothing
The switching of rule；In the case where not touching other touch-switch, the lasting output of the road signal source is ensured always, realizes signal
The function of locking.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model one embodiment.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
Specific embodiment of the present utility model is described in detail with reference to the accompanying drawings and embodiments.
In the following detailed description, many specific descriptions are described for illustrative purposes so as to thoroughly understand institute
Disclosed embodiment, it is clear, however, that one or more embodiments can be in the case where specifically describing without using these
Implement, in other instances, known structure and device is schematically shown, to simplify attached drawing.
As shown in Figure 1, one embodiment according to the present utility model, the present embodiment discloses a kind of more with interlock function
The online aging switching circuit of road audio and video equipment, it include the signal input sources of four audio and video equipments, four relays, four
Switch, four LED, a current-limiting resistance and a signal output source and a DC power supply.
Wherein, the signal input sources of four audio and video equipments are Video, Audio L/R signal input sources, according to online
The planning of senile experiment or demand, by increasing signal input sources connection, you can realize the audio and video equipment of multichannel or batch
On-line monitoring.
Four switches are single-point touch switch, including first switch K1, second switch K2, third switch K3, and the 4th
Switch K4 is mainly used for the relay that is connect with the touch-switch of triggering and works, and makes wherein that signal input sources and signal are defeated all the way
Outlet forms access.When pressing another touch-switch, the relay automatic power down in former access disconnects the circuit, simultaneously
Again the relay work being triggered, the roads Shi Gai signal input sources form access with signal output end, and ensure that the road is believed always
The lasting output in number source, realizes the function of semaphore lock, while the paths of LEDs is lit, and connects and indicates as signal.Final basis
Demand numbers all touch-switch, realizes switching, the monitoring of multichannel or the online senile experiment of batch audio and video equipment.More may be used
The clearly position quick lock in when position number of positioning current monitor and exception.
What four relays were all made of is 4 dpdt double-pole double-throw (DPDT) relays, including the first relay J1, the second relay J2, third
Relay J3, the 4th relay J4.
Four LED are respectively LED1, LED2, LED3 and LED4, eye-catching green or red LED lamp bead can be used, mainly
It acts on, when wherein signal input sources form access with signal output end all the way, realizes the indicated work of signal connection and locking
Energy.
Signal output source uniquely exports mainly after signal input, output form access as audio-video signal
End, connect with television set or supervision equipment, realizes the monitoring of the online senile experiment of audio and video equipment.
Current-limiting resistance R1, main function are：It is triggered to form the overcurrent protection effect of LED lamp bead in circuit.
DC power supply DC, main function are：The DC supply of 6~12V is persistently provided for entire circuit, triggering after
Electrical work, makes wherein that signal input sources and output end form access all the way.
Relay described in the present embodiment includes four contacts, and four contact is normally opened shape under obstructed electricity condition
State；As shown in Figure 1, Fig. 1 shows that the present embodiment has the multichannel audio-video frequency On-line Product aging switching circuit of interlock function
Circuit catenation principle figure.Its circuit operation principle is as follows：When pressing any touch-switch, so that it is closed in a flash, that is, trigger
The road relay work；Such as：First switch K1 is pressed, the first relay J1 coils are powered, the first relay of synchronous triggering
Tetra- contact armature of K1a-K1d form closed state；K1a is closed, and the first relay J1 coils is made to be disconnected in first switch K1
Afterwards, operating voltage is continuously obtained by the contacts K1a armature, armature closure in the contacts K1b makes LED1 be lit for conducting, and K1c is touched
Point armature and the contacts K1d armature closure make signal input sources form access with signal output end, are not touching other touch-switch
In the case of, the lasting output of the road signal source can be ensured always, realize interlock function and signal output selection, while the road
LED1 is lit, and is connected and is indicated as signal.When pressing another touch-switch, when such as third switch K3, on third relay J3
Electricity and cause the contacts the K3a-K3d armature of third relay to become on-state from off-state, because of the actuation of the contacts K3b armature
It is disconnected the electric power loop of the first relay JI, the first relay J1 loses the contacts the K1a-K1d armature for putting and making the first relay
It is off.Power supply provides power supply for third relay J3 by K1a, K1b and is formed into a loop at this time, makes third relay
J3 continue workings, switch the contact K3c, K3d armature from third relay input signal, to realize interlock function and
Signal output switching；The contacts the K2a-K2d armature function and the 4th switch K4 and the 4th of second switch K2 and the second relay
The contacts the K4a-K4d armature function of relay and so on, it can be as needed, it is arbitrarily realized by the touch-switch of number online
Monitoring switching.And the interlock function of circuit through this embodiment, audio and video equipment is realized under room temperature, high temperature or cryogenic conditions,
In the ageing process of batch working, realization rapidly and efficiently monitors sound, the video work output state of each product, is monitored
And switching；To fast and efficiently find aging working condition of product in the environment of regulation, realize product not power down,
In the case of not moving, not changing working environment, the Stability and dependability of its product is monitored.
In addition, as expanded application, it is expansible to be applied to Switching Power Supply since the selection path of signal is all to belong to straight-through
Online aging monitoring conversion per road output voltage；Multi probe signal conversion of monitoring system etc..
The circuit arrangement of the present embodiment realizes the Centralized Monitoring of sound to multichannel or batch, video product, monitoring personnel
Chamber need not be entered back into or climbing ageing rack is monitored, while need not also plug AV signal connecting lines one by one again；It is logical
This control switching circuit is crossed, can be realized to every test products, carry out one by one optional in real time using touch-switch operation switching
The mode selected monitors；The working strength of monitoring personnel is reduced, while improving monitoring efficiency, realizes batch aging product
The judgement of feasibility.
In addition, also achieving to all test products, can carry out freely, arbitrarily, random switching；Do not touching other
In the case of touch-switch, the lasting output of the road signal source is ensured always, realizes the function of semaphore lock.
" one embodiment " for being spoken of in the present specification, " another embodiment ", " embodiment " etc., refer to combining
Specific features, structure or the feature of embodiment description are included at least one embodiment generally described herein.
It is not centainly to refer to the same embodiment that statement of the same race, which occur, in multiple places in the description.Furthermore, it is understood that in conjunction with any
When a embodiment describes a specific features, structure or feature, to be advocated be realized in conjunction with other embodiment it is this
Feature, structure or feature are also fallen in the scope of the utility model.
Although reference be made herein to the utility model is described in multiple explanatory embodiments of utility model, still, answers
The understanding, those skilled in the art can be designed that a lot of other modification and implementations, these modifications and implementations will
It falls within scope and spirit disclosed in the present application.More specifically, it discloses in the application, the model of drawings and claims
In enclosing, a variety of variations and modifications can be carried out to the building block and/or layout of theme combination layout.In addition to building block
And/or outside the variations and modifications of layout progress, to those skilled in the art, other purposes also will be apparent.
Claims (6)
1. a kind of multichannel audio-video frequency On-line Product aging switching circuit with interlock function, including at least two audio and video equipments
Signal input sources, at least two relays, at least two switches, a signal output source and a DC power supply；Its feature
It is：The relay includes four contacts, and four contact is normally open under obstructed electricity condition；It is each described after
First contact of electric appliance is correspondingly connected with a switch, is connected between second contact of each relay, and with
The DC power supply connection；The signal input sources of each audio and video equipment are correspondingly connected with the third and fourth of a relay
The other end of one end of two contacts, the third and fourth two contacts connects the signal output source.
2. the multichannel audio-video frequency On-line Product aging switching circuit according to claim 1 with interlock function, feature
It is to further include at least two LED, each LED is correspondingly connected with the 4th contact of a relay.
3. the multichannel audio-video frequency On-line Product aging switching circuit according to claim 2 with interlock function, feature
It is to further include current-limiting resistance, the current-limiting resistance is connected in the circuit that the LED is formed.
4. the multichannel audio-video frequency On-line Product aging switching circuit according to claim 1 with interlock function, feature
It is that the switch is single-point touch switch.
5. the multichannel audio-video frequency On-line Product aging switching circuit according to claim 1 with interlock function, feature
It is that the relay is four dpdt double-pole double-throw (DPDT) relays.
6. the multichannel audio-video frequency On-line Product aging switching circuit according to claim 1 with interlock function, feature
It is that the signal input sources include Video, Audio L/R signal input sources, the Video, the input of Audio L/R signals
Source is separately connected a relay contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820397291.6U CN208094688U (en) | 2018-03-22 | 2018-03-22 | Multichannel audio-video frequency On-line Product aging switching circuit with interlock function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820397291.6U CN208094688U (en) | 2018-03-22 | 2018-03-22 | Multichannel audio-video frequency On-line Product aging switching circuit with interlock function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208094688U true CN208094688U (en) | 2018-11-13 |
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ID=64059715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820397291.6U Expired - Fee Related CN208094688U (en) | 2018-03-22 | 2018-03-22 | Multichannel audio-video frequency On-line Product aging switching circuit with interlock function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108234905A (en) * | 2018-03-22 | 2018-06-29 | 四川金网通电子科技有限公司 | Multichannel audio-video frequency On-line Product aging switching circuit with interlock function |
| CN110356738A (en) * | 2019-08-13 | 2019-10-22 | 临江市吉临垃圾分类智能处理科技有限责任公司 | A kind of automatic garbage classification dustbin |
-
2018
- 2018-03-22 CN CN201820397291.6U patent/CN208094688U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108234905A (en) * | 2018-03-22 | 2018-06-29 | 四川金网通电子科技有限公司 | Multichannel audio-video frequency On-line Product aging switching circuit with interlock function |
| CN110356738A (en) * | 2019-08-13 | 2019-10-22 | 临江市吉临垃圾分类智能处理科技有限责任公司 | A kind of automatic garbage classification dustbin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |