CN201571167U - Control signal conversion circuit and television test system - Google Patents
Control signal conversion circuit and television test system Download PDFInfo
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- CN201571167U CN201571167U CN2010200011412U CN201020001141U CN201571167U CN 201571167 U CN201571167 U CN 201571167U CN 2010200011412 U CN2010200011412 U CN 2010200011412U CN 201020001141 U CN201020001141 U CN 201020001141U CN 201571167 U CN201571167 U CN 201571167U
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Abstract
An embodiment of the utility model discloses a control signal conversion circuit and a television test system, which belongs to the field of electronic technology. The technical problems of severe port resource wastage of control signal source and inferior reliability of the control signal source in the prior-art television test system are settled. The control signal conversion circuit comprises the following components: at least one signal input end which is connected with the control signal source, a signal conversion module, at least two signal output ends. Each signal output end outputs a control signal. The signal conversion module is used for receiving the control signal transmitted from the control signal source through the signal input end, and converts the control signal to at least two controls signals for outputting through the signal output ends. The television test system comprises the control signal conversion circuit disclosed by the embodiment of the utility model. The control signal conversion circuit and the television test system are used for improving the control signal conversion circuit.
Description
Technical field
The utility model relates to electronic technology field, the tv test system that is specifically related to a kind of control signal converting circuit and is provided with described control signal converting circuit.
Background technology
Along with the continuous development of electronic technology, television set has become one of household electrical appliance the most common in people's daily life.
At present, the number of set power consumption device in the tv test system, kind is very many, the power consumption device of each power consumption device or every kind of same function all needs to connect one tunnel control signal output ends usually, with as depicted in figs. 1 and 2 alarm lamp LED is example, usually be provided with the alarm lamp LED of a plurality of different colours in the existing tv test system, directly (or claim: road output control signal generation equipment) (for example: the I/O mouth) link to each other with the control signal source for the alarm lamp LED of every kind of different colours, whether the control signal source is exported control signal respectively to the alarm lamp LED of different colours shinny with control alarm lamp LED, thereby reach the purpose of warning.
The inventor finds that there is following problem at least in prior art in realizing process of the present utility model:
1, the number of the signal output part port of existing tv test system inner control signal source is limited, and the number of power consumption device, of a great variety, because the power consumption device of each power consumption device or every kind of same function all connects one tunnel control signal output ends, cause the number or the kind of the power consumption device that the control signal source can control fewer, cause the port resource waste in control signal source more serious;
2, the signal output part in control signal source directly links to each other with the power consumption device, during faults such as the power consumption device is short-circuited, overload, very easily causes the short circuit of control signal source or burns, and causes the reliability in control signal source poor.
The utility model content
The utility model embodiment provides a kind of control signal converting circuit and tv test system, has solved the poor technical problem of reliability that there is the relatively more serious and control signal source of the port resource waste in control signal source in existing tv test system.
For achieving the above object, embodiment of the present utility model has adopted following technical scheme:
This control signal converting circuit comprises signal input part that at least one road links to each other with the control signal source, signal conversion module, two paths of signals output at least, and the described signal output part in every road is exported one tunnel control signal, wherein:
Described signal conversion module is used for receiving the control signal that send in described control signal source by described signal input part, and described control signal is converted at least after the two path control signal by described signal output part output.
Further, described control signal source is an industrial computer, and described signal input part is the I/O mouth of described industrial computer.
Further, described control signal is high level, low level signal, and described signal conversion module is a coding chip.
Further, described signal conversion module comprises at least three tunnel described signal input parts, the grounding pin of selecting pin, power pins and being in ground state, wherein:
Described signal input part two-way wherein links to each other with described control signal source and current potential power supply respectively, remaining described signal input part ground connection;
Described selection pin is used to select the described signal output part in which road to export described control signal;
Described power pins links to each other with first power supply, is used for obtaining electric energy and being described signal conversion module power supply from described first power supply.
Further, described coding chip is the 74HC138 chip.
Further, described control signal converting circuit also comprises power consumption device and device control module, wherein:
Whether described device control module links to each other with described signal output part, be used for receiving control signal from described signal output part, and control described power consumption device according to described control signal and work.
Further, described device control module comprises first triode, second triode, diode and relay, described relay pack vinculum circle, moving contact and fixed contact, wherein:
The base stage of described first triode links to each other with described signal output part, and its collector electrode links to each other its grounded emitter with the base stage of second source and described second triode respectively;
The collector electrode of described second triode links to each other with a termination of described coil and the positive pole of described diode respectively, its grounded emitter;
Another termination of described coil links to each other with the negative pole of the 3rd power supply and described diode respectively, and described moving contact is electrically connected with described power consumption device;
Described fixed contact links to each other with the power consumption power supply, and during described coil electricity, described coil can adsorb described moving contact to be made described moving contact connect with described fixed contact and form and be electrically connected.
Further, described relay is the HRB1-S relay.
Further, described power consumption device is an alarm lamp, and the color of described alarm lamp is red, green or yellow wherein one or more.
This tv test system comprises the control signal converting circuit that above-mentioned the utility model embodiment is provided.
Compared with prior art, the utility model provides the arbitrary technical scheme in the technique scheme to have following advantage:
Signal conversion module in the control signal converting circuit provided by the utility model can receive the control signal that send in the control signal source by signal input part, and control signal is converted at least exports by signal output part after the two path control signal, and signaling conversion circuit comprises at least two bars outputs, each signal output part all can be exported one tunnel control signal, and then each signal output part all can be controlled a power consumption device or one group of power consumption device that function is identical, as seen, the control signal source can reach the purpose of a plurality of or multiple power consumption device of control by one road signal input part and signal conversion module among the utility model embodiment, so can make full use of the port resource in control signal source, and then also can save out the port in more control signals source;
Simultaneously, owing to have signal conversion module between control signal source and the power consumption device, during faults such as the power consumption device is short-circuited, overload, can cause the signal conversion module short circuit at most or burn, can not impact the control signal source, so improved reliability, fail safe and the useful life in control signal source, and then solved the poor technical problem of reliability that there is the relatively more serious and system of the control signal source port wasting of resources in existing tv test system.
Description of drawings
Fig. 1 is a kind of execution mode schematic diagram of the control circuit of alarm lamp in the existing tv test system;
Fig. 2 is another execution mode schematic diagram of the control circuit of alarm lamp in the existing tv test system;
Fig. 3 is the schematic diagram of the control signal converting circuit internal structure that embodiment of the present utility model provided;
Fig. 4 is the schematic diagram of a kind of execution mode of the control signal converting circuit that embodiment of the present utility model provided;
Fig. 5 is the schematic diagram of signal conversion module in the control signal converting circuit that embodiment of the present utility model provided;
Fig. 6 is the circuit diagram of device control module in the control signal converting circuit that embodiment of the present utility model provided.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described in detail.
The utility model embodiment provides a kind of port resource and the better control signal converting circuit of reliability, fail safe in control signal source and tv test system that is provided with described control signal converting circuit that can make full use of the control signal source.
As shown in Figure 3 and Figure 4, the control signal converting circuit that the utility model embodiment is provided, comprise signal input part 2 that at least one road links to each other with control signal source 1, signal conversion module 3, two paths of signals output 4 at least, every road signal output part 4 outputs one tunnel control signal, wherein: signal conversion module 3 is used for receiving the control signal that send in control signal sources 1 by signal input part 2, and control signal is converted at least after the two path control signal by signal output part 4 outputs.
Simultaneously, owing to have signal conversion module 3 between control signal source 1 and the power consumption device 5, during faults such as power consumption device 5 is short-circuited, overload, can cause signal conversion module 3 short circuits at most or burn, can not impact control signal source 1, so improved reliability, fail safe and the useful life in control signal source 1, and then solved the poor technical problem of reliability that there is the relatively more serious and system of the control signal source port wasting of resources in existing tv test system.
Control signal is high level, low level signal, and signal conversion module 3 is a coding chip.High level, low level signal are a kind of forms of more accurate digital controlled signal.Coding chip is powerful, suitable is applied to change with high level, the low level signal control signal as form.
As shown in Figure 5, signal conversion module 3 comprises at least three signal input parts 2, the grounding pin GND that selects pin E1, E2, E3, power pins VCC and be in ground state, wherein: signal input part 2 two-way wherein is that signal input part A0, A1 link to each other with control signal source 1 and current potential power supply V5 respectively, remaining signal input part A2 ground connection;
Select pin E1, E2, E3 to be used to select any road signal output part 4 output control signals;
Power pins VCC links to each other with the first power supply V1, is used for obtaining electric energy and being signal conversion module 3 power supplies from the first power supply V1.
Can avoid of the interference of other level signals after the signal input part A2 ground connection of ground connection to signal conversion module 3, when control signal source 1 needs the power consumption device 5 of control many, remaining signal input part A2 also can link to each other with control signal source 1, is used to receive control signal.
Select pin E1, E2 ground connection in the present embodiment, select pin E3 to link to each other with the current potential power supply by resistance R 1.At this moment, selecting pin E1, E2 is low level, and selecting pin E3 is high level, and selected signal output part Y0, Y1, Y2 export control signal.
Coding chip is preferably the 74HC138 chip in the present embodiment.The 74HC138 chip has multiple function, and stable performance, low in energy consumption, because the 74HC138 chip power-consumption is very low, so during by the multiple power consumption of 74HC138 chip controls device 5, the probability that heating problem appears in the The whole control signaling conversion circuit is very low.Because the power consumption of 74HC138 chip is very little, so the voltage of the first power supply V1 can be 4～6V, is preferably 5V.Grounding pin GND can play a protective role to chip.
As shown in Figure 5, with input signal input A0, be expressed as 0 during the control signal low level of A1, be expressed as 1 during high level and be example, the two paths of signals input A0 that links to each other with control signal source 1 in the present embodiment, A1 can realize to three as shown in Figure 4 power consumption device 5 control promptly: as signal input part A0, when A1 is two-way, two paths of signals input A0, A1 can receive 4 kinds of high level, the control signal of low level signal form is promptly: 00,01,10,11, then by three road signal output part Y0, Y1, Y2 exports control signal, and then controls the state of three kinds of power consumption devices 5.
Being respectively red, green and yellow three kinds of colors with alarm lamp LED is example, and the control signal 00 of two paths of signals input A0, A1 input can be defined as red bright, control signal 01 can be defined as that green light is bright, control signal 10 can be defined as the alarm lamp LED that amber light is bright, control signal 11 can be defined as three kinds of colors and all extinguish.Current potential power supply V5 links to each other with two paths of signals input A0, A1 respectively by resistance R 2, R3, is used for for two signal input part A0, A1 provide two high level signals, extinguishing state thereby make all alarm lamp LED be in when no control signal is imported.
When signal input part 2 is three the tunnel to be that A1, A2, A3 are when all linking to each other with control signal source 1, can receive the control signal of 8 kinds of high level, low level signal form, and control the state of eight kinds of power consumption devices 5 by signal output part Y0, Y1, Y2, Y3, Y4, Y5, Y6, Y7.
Control signal converting circuit comprises as shown in Figure 4 power consumption device 5 and device control module 6 in the present embodiment, wherein: device control module 6 links to each other with signal output part 4, be used for receiving control signal, and whether work according to control signal control power consumption device 5 from signal output part 4.
As shown in Figure 6, device control module 6 comprises the first triode Q1, the second triode Q2, diode D and relay 789, and relay 789 comprises moving contact 7, fixed contact 8 and coil 9, wherein:
The base stage of the first triode Q1 with link to each other as Fig. 3 or signal output part 4 shown in Figure 4, its collector electrode links to each other its grounded emitter with the base stage of the second source V2 and the second triode Q2 respectively;
The collector electrode of the second triode Q2 links to each other its grounded emitter with termination of coil 9 and the positive pole of diode D respectively;
Another termination of coil 9 links to each other with the negative pole of the 3rd power supply V3 and diode D respectively, and moving contact 7 is electrically connected with power consumption device 5;
During signal output part 4 output high level, the first triode Q1, the second triode Q2 conducting, relay 789 energisings, at this moment, coil 9 can make moving contact 7 be electrically connected with fixed contact 8 formation by absorption moving contact 7, because moving contact 7 is electrically connected with power consumption device 5, so power consumption device 5 is electrically connected with power consumption power supply V4 by moving contact 7, fixed contact 8 and obtains electric energy from power consumption power supply V4.
The voltage of power consumption power supply V4 will meet the operating voltage of power consumption device 5, is the voltage 24V of power consumption power supply V4 in the present embodiment.Also be connected with inductance L between power consumption power supply V4 and the fixed contact 8, inductance L plays and prevents that the signal of telecommunication from disturbing and the effect of overcurrent protection.
The tv test system that the utility model embodiment is provided comprises the control signal converting circuit that above-mentioned the utility model embodiment is provided.
Because the identical technical characterictic of control signal converting circuit that is provided with above-mentioned the utility model embodiment is provided in the utility model embodiment tv test system, so both not only have unicity, and can also produce identical technique effect, solve identical technical problem.
The above; it only is embodiment of the present utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (10)
1. control signal converting circuit is characterized in that: comprise signal input part that at least one road links to each other with the control signal source, signal conversion module, two paths of signals output at least, the described signal output part in every road is exported one tunnel control signal, wherein:
Described signal conversion module is used for receiving the control signal that send in described control signal source by described signal input part, and described control signal is converted at least after the two path control signal by described signal output part output.
2. control signal converting circuit according to claim 1 is characterized in that: described control signal source is an industrial computer, and described signal input part is the I/O mouth of described industrial computer.
3. control signal converting circuit according to claim 2 is characterized in that: described control signal is high level, low level signal, and described signal conversion module is a coding chip.
4. control signal converting circuit according to claim 3 is characterized in that: described signal conversion module comprises at least three tunnel described signal input parts, the grounding pin of selecting pin, power pins and being in ground state, wherein:
Described signal input part two-way wherein links to each other with described control signal source and current potential power supply respectively, remaining described signal input part ground connection;
Described selection pin is used to select the described signal output part in which road to export described control signal;
Described power pins links to each other with first power supply, is used for obtaining electric energy and being described signal conversion module power supply from described first power supply.
5. control signal converting circuit according to claim 4 is characterized in that: described coding chip is the 74HC138 chip.
6. control signal converting circuit according to claim 1 is characterized in that: described control signal converting circuit also comprises power consumption device and device control module, wherein:
Whether described device control module links to each other with described signal output part, be used for receiving control signal from described signal output part, and control described power consumption device according to described control signal and work.
7. control signal converting circuit according to claim 6 is characterized in that: described device control module comprises first triode, second triode, diode and relay, described relay pack vinculum circle, moving contact and fixed contact, wherein:
The base stage of described first triode links to each other with described signal output part, and its collector electrode links to each other its grounded emitter with the base stage of second source and described second triode respectively;
The collector electrode of described second triode links to each other with a termination of described coil and the positive pole of described diode respectively, its grounded emitter;
Another termination of described coil links to each other with the negative pole of the 3rd power supply and described diode respectively, and described moving contact is electrically connected with described power consumption device;
Described fixed contact links to each other with the power consumption power supply, and during described coil electricity, described coil can adsorb described moving contact to be made described moving contact connect with described fixed contact and form and be electrically connected.
8. control signal converting circuit according to claim 7 is characterized in that: described relay is the HRB1-S relay.
9. control signal converting circuit according to claim 6 is characterized in that: described power consumption device is an alarm lamp, and the color of described alarm lamp is red, green or yellow wherein one or more.
10. a tv test system is characterized in that: comprise aforesaid right requirement 1 to 9 arbitrary described control signal converting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200011412U CN201571167U (en) | 2010-01-12 | 2010-01-12 | Control signal conversion circuit and television test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200011412U CN201571167U (en) | 2010-01-12 | 2010-01-12 | Control signal conversion circuit and television test system |
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| CN201571167U true CN201571167U (en) | 2010-09-01 |
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| CN2010200011412U Expired - Fee Related CN201571167U (en) | 2010-01-12 | 2010-01-12 | Control signal conversion circuit and television test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907568A (en) * | 2015-12-23 | 2017-06-30 | 安瑞科(廊坊)能源装备集成有限公司 | The method and device of compatible different signal source |
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2010
- 2010-01-12 CN CN2010200011412U patent/CN201571167U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907568A (en) * | 2015-12-23 | 2017-06-30 | 安瑞科(廊坊)能源装备集成有限公司 | The method and device of compatible different signal source |
| CN106907568B (en) * | 2015-12-23 | 2020-06-30 | 安瑞科(廊坊)能源装备集成有限公司 | Method and device compatible with different signal sources |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20130112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |