CN102339528A - Multifunctional infrared testing instrument - Google Patents
Multifunctional infrared testing instrument Download PDFInfo
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- CN102339528A CN102339528A CN2010102302883A CN201010230288A CN102339528A CN 102339528 A CN102339528 A CN 102339528A CN 2010102302883 A CN2010102302883 A CN 2010102302883A CN 201010230288 A CN201010230288 A CN 201010230288A CN 102339528 A CN102339528 A CN 102339528A
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Abstract
The invention discloses a multifunctional infrared testing instrument, which comprises a first infrared receiving circuit, a second infrared receiving circuit, a radio frequency (RF) wireless receiving-transmitting circuit, a single chip circuit, a film switch keystroke circuit, a display circuit, a buzzer circuit, a light emitting diode (LED) lamp circuit, an RS232 interface circuit and a data memory circuit; the single chip circuit comprises a carrier frequency selecting module; the output of the first infrared receiving circuit and the output of the second infrared receiving circuit are respectively connected to the carrier frequency selecting module; the RF wireless receiving-transmitting circuit is connected with the carrier frequency selecting module; the output of the film switch keystroke circuit is connected to the display circuit; a prompting signal output of the single chip circuit is respectively connected to the input of the buzzer circuit and the LED lamp circuit; the single chip circuit is connected with the display circuit; the single chip circuit is connected with the RS232 interface circuit; and the single chip circuit is connected with the data memory circuit. Due to the adoption of the multifunctional infrared testing instrument, the production efficiency can be greatly improved, and the application range is wide.
Description
Technical field
The present invention relates to a kind of testing tool, particularly relate to a kind of multi-functional infrared test appearance.
Background technology
Present widely used domestic electrical equipment remote controller nearly all is to adopt the infrared transmission technology.Along with occurring of IR remote controller coded format, often need to add new coded format to satisfy the needs of production test with emerging in an endless stream.Simultaneously, in case the agreement that increases newly is arranged, the software that also need upgrade in time to reduce production costs, is enhanced productivity.So single code reader function can not satisfy the demand of development.
It is higher that the telepilot manufacturing industry belongs to an industry concentration ratio full-fledged and with keen competition.Domestic telepilot enterprise rest on mostly at present labour intensive for machining state.Since dog-eat-dog with limited by cost, the testing tool utilization rate is low, production efficiency is low.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of multi-functional infrared test appearance is provided, its ability online upgrading; The coded format that upgrades in time and agreement; Support the storage contrast test, can increase substantially production efficiency, can adapt to different carrier frequencies; The hummer prompting function is arranged during test, improve the convenience and the practicality of operation.
The technical solution adopted for the present invention to solve the technical problems is: a kind of multi-functional infrared test appearance, and it comprises: first infrared receiving circuit, second infrared receiving circuit, RF wireless transceiver circuit, single chip circuit, thin film switch key circuit, display circuit, buzzer circuit, LED circuit for lamp, RS232 interface circuit and data storage circuitry; This single chip circuit comprises carrier frequency selection module;
First infrared receiving circuit and second infrared receiving circuit its role is to receive and come from the ir encoded signal that corresponding telepilot sends, and the signal after the demodulation is transferred to single chip circuit;
The RF wireless transceiver circuit its role is to receive and comes from the wireless encoding signal that corresponding telepilot sends, and the signal after the demodulation is transferred to single chip circuit, and the signal of single chip circuit is transmitted to corresponding telepilot;
The thin film switch key circuit its role is to provide the button input, and is transferred to the display circuit circuit to the button trigger pip;
Single chip circuit; Its role is to receive the coding protocol of PC input and be stored in the data storage circuitry; To handling and be stored in the data storage circuitry or corresponding control signal or the shows signal of output from the wireless encoding signal behind the ir encoded signal behind first infrared receiving circuit or second infrared receiving circuit demodulation or the RF wireless transceiver circuit demodulation; To display circuit transfer from the thin film switch key circuit handle and export corresponding control signal by key input signal, to the alerting signal of buzzer circuit with LED circuit for lamp output correspondence; This single chip circuit includes carrier frequency and selects module, and this carrier frequency selects module to its role is to select needed ir encoded signal or RF wireless encoding signal;
Display circuit; The trigger pip that its role is to receive the thin film switch key circuit shows; And this trigger pip transferred to single chip circuit, and receive the processing signals of single chip circuit output, drive charactron, LED display or LED display and show corresponding information;
Buzzer circuit and LED circuit for lamp, its role is to learn or during check test button order and code value whether to seasonable prompting;
The RS232 interface circuit its role is to realize that single chip circuit is connected with the communication of PC;
Data storage circuitry, its role is to provides data space for single chip circuit;
The output of the output of first infrared receiving circuit, second infrared receiving circuit is connected to carrier frequency respectively and selects module; The RF wireless transceiver circuit selects module to be connected with carrier frequency; The output of thin film switch key circuit is connected to display circuit; The alerting signal output of single chip circuit is connected to the input of buzzer circuit and LED circuit for lamp respectively; Single chip circuit is connected with display circuit; Single chip circuit is connected with the RS232 interface circuit; Single chip circuit is connected with data storage circuitry.
Said display circuit comprises charactron, LED display or LCD display and display chip.
Said display chip is that chip and the peripheral circuit element of ZLG7289 constitutes by model, and this chip has the SPI serial line interface.
Said thin film switch key circuit exports trigger pip in the display circuit display chip, drives charactron, LED display or LCD display by display chip and shows.
Also comprise a power circuit, this power circuit provides the voltage of 5V to described first infrared receiving circuit, second infrared receiving circuit, single chip circuit, thin film switch key circuit, display circuit, buzzer circuit, LED circuit for lamp, RS232 interface circuit and data storage circuitry through Switching Power Supply; Described power circuit through three-terminal voltage-stabilizing chip and capacitance voltage stabilizing, provides 3.3V voltage to described RF wireless transceiver circuit through Switching Power Supply.
The invention has the beneficial effects as follows: owing to adopted first infrared receiving circuit, second infrared receiving circuit, RF wireless transceiver circuit, single chip circuit, thin film switch key circuit, display circuit, buzzer circuit, LED circuit for lamp, RS232 interface circuit and data storage circuitry to constitute multi-functional infrared test appearance, and this single chip circuit comprises carrier frequency selection module; Compared with prior art, the present invention has following effect:
1, support online upgrading, software can upgrade in time; 2, support the storage contrast test, can increase substantially production efficiency; 3, carrier wave is optional, can adapt to different carrier frequencies, and is applied widely; 4, hummer and LED light emitting diode prompting function have improved the convenience and the practicality of operation.
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain; But a kind of multi-functional infrared test appearance of the present invention is not limited to embodiment.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present invention;
Fig. 2 is master control borad circuit theory diagrams of the present invention;
Fig. 3 is a display board circuit schematic diagram of the present invention;
Fig. 4 is a thin film switch key panel synoptic diagram of the present invention;
Fig. 5 is a main program flow chart of the present invention.
Embodiment
Referring to shown in Figure 1; A kind of multi-functional infrared test appearance of the present invention comprises first infrared receiving circuit 1, second infrared receiving circuit 2, RF wireless transceiver circuit 3, single chip circuit 4, thin film switch key circuit 5, display circuit 6, buzzer circuit 7, LED circuit for lamp 8, RS232 interface circuit 9 and data storage circuitry 10; This single chip circuit 4 comprises carrier frequency selection module 41.
First infrared receiving circuit 1 and second infrared receiving circuit 2 its role is to receive and come from the ir encoded signal that corresponding telepilot sends, and the signal after the demodulation is transferred to single chip circuit 4;
RF wireless transceiver circuit 3 its role is to receive and comes from the wireless encoding signal that corresponding telepilot sends, and the signal after the demodulation is transferred to single chip circuit 4, and the signal of single chip circuit 4 is transmitted to corresponding telepilot;
Thin film switch key circuit 5 its role is to provide the button input, and is transferred to display circuit circuit 4 to the button trigger pip;
Single chip circuit 4; Its role is to receive the coding protocol of PC input and be stored in the data storage circuitry 10; To handling and be stored in the data storage circuitry 10 or corresponding control signal or the shows signal of output from the wireless encoding signal behind the ir encoded signal behind first infrared receiving circuit 1 or second infrared receiving circuit 2 demodulation or the RF wireless transceiver circuit 3 demodulation; To display circuit 6 transfer from thin film switch key circuit 5 handle and export corresponding control signal by key input signal, to buzzer circuit 7 and the corresponding alerting signal of LED circuit for lamp 8 outputs; This single chip circuit 4 includes carrier frequency and selects module 41, and this carrier frequency selects module 41 to its role is to select needed ir encoded signal or RF wireless encoding signal;
Display circuit 6; The trigger pip that its role is to receive thin film switch key circuit 5 shows; And this trigger pip transferred to single chip circuit 4, and receive the processing signals of single chip circuit 4 outputs, drive charactron, LED display or LED display and show corresponding information;
Buzzer circuit 7 and LED circuit for lamp 8, its role is to learn or during check test button order and code value whether to seasonable prompting;
Data storage circuitry 10, its role is to provides data space for single chip circuit 4;
The output of the output of first infrared receiving circuit 1, second infrared receiving circuit 2 is connected to carrier frequency respectively and selects module 41; RF wireless transceiver circuit 3 selects module 41 to be connected with carrier frequency; The output of thin film switch key circuit 5 is connected to display circuit 6; The alerting signal output of single chip circuit 4 is connected to the input of buzzer circuit 7 and LED circuit for lamp 8 respectively; Single chip circuit 4 is connected with display circuit 6; Single chip circuit 4 is connected with RS232 interface circuit 9; Single chip circuit 4 is connected with data storage circuitry 10.
Wherein, display circuit 6 comprises charactron, LED display or LCD display and display chip; Display chip is that chip and the peripheral circuit element of ZLG7289 constitutes by model, and this chip has the SPI serial line interface; Thin film switch key circuit 5 exports trigger pip in the display circuit 6 display chip, drives charactron, LED display or LCD display by display chip and shows.
This multi-functional infrared test appearance also comprises a power circuit, and this power circuit provides the voltage of 5V to described first infrared receiving circuit 1, second infrared receiving circuit 2, single chip circuit 4, thin film switch key circuit 5, display circuit 6, buzzer circuit 7, LED circuit for lamp 8, RS232 interface circuit 9 and data storage circuitry 10 through Switching Power Supply; Described power circuit through three-terminal voltage-stabilizing chip and capacitance voltage stabilizing, provides 3.3V voltage to described RF wireless transceiver circuit 3 through Switching Power Supply.
Referring to Fig. 2, shown in Figure 3, first infrared receiving circuit 1 mainly comprises infrared receiving chip U1 and triode Q2; Infrared receiving chip U1 is the integrated infrared receiving terminal of collection reception, amplification and demodulation, and can select for use is that receive frequency is 38KHZ, and infrared receiving chip U1 can use IR-AT138R-W.
Second infrared receiving circuit 2 mainly comprises infrared receiving chip U2 and triode Q3; Infrared receiving chip U2 is the integrated infrared receiving terminal of collection reception, amplification and demodulation, and can select for use is that receive frequency is the chip of 56KHZ, and infrared receiving chip U2 can select IR-AT156R-W for use.
RF wireless transceiver circuit 3 mainly comprises wireless receiving chip U3.
The output terminal of infrared receiving chip U1, infrared receiving chip U2 and wireless receiving chip U3 is connected with the port 9 of single-chip microcomputer U5 respectively.
Single chip circuit 4 is made up of single-chip microcomputer U5 and peripheral circuit element, and chip U5 can use STC90-PL44, and by crystal oscillator XT1 temporal frequency is provided.
Single chip circuit 4 comprises carrier frequency selection module 41, and carrier frequency selects module 41 to its role is to select needed ir encoded signal or RF wireless encoding signal.
Display circuit 6 is to be made up of display chip U4, two 4 charactron U9 and U10 and peripheral circuit.The respective pin of charactron U9 and U10 is connected with display chip U4 respectively, and the pin 6,7,8 of display chip U4 is connected with 8 with the port one, 2,3 of single-chip microcomputer U5 respectively with 9.Display chip U4 can use Guangzhou Zhou Ligong ZLG7289; This chip has SPI serial line interface function; The intelligent display chip for driving that can drive 8 charactrons or 64 independent LED simultaneously also can connect the nearly keyboard matrix of 64 keys simultaneously, and single display chip can be accomplished the repertoire of LED demonstration and keyboard interface.
Thin film switch key circuit 3 adopts determinant keyboard, has ten button KEY0～KEY9, and ten keys comprise 8 line unit KEY2～KEY9 and 2 row key KEY0 and KEY1, and ten button KEY0～KEY9 form 8 * 2 keyboard matrixs; Ten button KEY0～KEY9 are connected with the respective pin of display chip U4 respectively, and are transferred to display circuit circuit 6 to the button trigger pip.The thin film switch key panel is made up of 10 numeric keys and reset key, switch key, cancel key, preservation key, feeler switch, the learning key of 0-9 referring to shown in Figure 4.The 10 numeric keys of 0-9 be used to the to decode numbering of agreement is like a kind of be numbered " 01 " of the agreement of decoding; The numbering of learning key+decoding agreement is used to select required decoding agreement to go forward side by side into the study pattern; Switch key is used to select the infrared carrier wave of 38KHZ or 56KHZ, and reset key+learning key+11 keys are used to select RF radio band carrier wave; Preserve key and be used to preserve the key assignments of input; If the key assignments of storage will be deleted, then use cancel key; After having stored key assignments, carry out production test, can pass through reset key+feeler switch+decoding protocol number, can access the key assignments of original storage and get into test pattern.
Buzzer circuit 7 comprises hummer and triode Q1, and the base stage of triode Q1 is connected with the port 24 of single-chip microcomputer U5 through a resistance, and hummer is connected with the collector of triode Q1.
LED circuit for lamp 8 comprises light emitting diode D1, and light emitting diode D1 is connected with single-chip microcomputer U5 port 25 through a resistance.
Data storage circuitry 10 mainly by being made up of pin-saving chip U7 and peripheral circuit, and is connected with the port 21,22,23 of single-chip microcomputer U5.Pin-saving chip U7 can use AT24C512, and it has compact conformation, characteristics that memory capacity is big, in TT&C system, is adopted by a large amount of.
Power circuit is made up of 5V Switching Power Supply, three-terminal voltage-stabilizing chip U8 and corresponding electric capacity; The 5V Switching Power Supply is that first infrared receiving circuit 1, second infrared receiving circuit 2, single chip circuit 4, thin film switch key circuit 5, display circuit 6, buzzer circuit 7, LED circuit for lamp 8, RS232 interface circuit 9 and data storage circuitry 10 provide 5V power supply; Switching Power Supply is from the input end input of voltage stabilizing chip U8; From the output terminal output of voltage stabilizing chip U8, exportable 3.3V voltage, the output terminal of voltage stabilizing chip U8 is behind corresponding electrofiltration ripple; Be connected to the power input of RF wireless transceiver circuit 3, voltage stabilizing chip U8 can use HT7533.
During use, plug in the present invention earlier, and be connected with PC through the RS232 interface, be transferred to needed decoding agreement on the single-chip microcomputer U5 from PC, the decoding agreement that single-chip microcomputer U5 will receive stores on the storage chip U1.
Be numbered " 01 " with the decoding agreement is an example below, and the study and the test process of above-mentioned multi-functional infrared test appearance is described.
During study; Through switch key selective reception first infrared receiving circuit 1 of thin film switch key panel or the ir encoded signal of second infrared receiving circuit 2; Perhaps pass through the wireless encoding signal of the reset key+learning key+11 key selective reception RF wireless transceiver circuits 3 of thin film switch key panel; So, selected receiving circuit with ir encoded signal or wireless encoding demodulation after, the input signal during as this test is sent on the single-chip microcomputer U5; Press the numbering " 01 " of the learning key+decoding agreement on thin film switch key panel road, decoding agreement and the entering mode of learning of promptly selecting institute to learn; During study; The telepilot launch window that to be learnt is aimed at the infrared receiving window mouth or the RF receive window of multi-functional infrared test appearance; Press the button that to learn on the telepilot; Then infrared coding data or wireless encoding data are just through being transferred to after the receiving circuit demodulation among the single-chip microcomputer U5, and charactron U6 and U7 go up systematic code and the numeric data code that shows corresponding key number and IR remote controller; After having pressed the button of telepilot successively, preserve key assignments (comprising systematic code and numeric data code) by preserving key, the key assignments after the preservation (comprising systematic code and numeric data code) can be used for production test.
During production test, through the reset key+feeler switch on the thin film switch key panel+decoding protocol number " 01 ", can access the coding protocol of having learnt is the key assignments (comprising systematic code and numeric data code) of " 01 ", and gets into test pattern.During test; Telepilot launch window to be tested is aimed at the infrared receiving window mouth or the wireless receiving window of multi-functional infrared test appearance; Press the button that to test on the telepilot; When code value was consistent with the key assignments (comprising systematic code and numeric data code) of storage, hummer sent short cry, and the LED lamp is bright simultaneously; When the order of all key testings was consistent with the key assignments of preservation (comprising systematic code and numeric data code), hummer sent long cry, and the LED lamp is bright simultaneously, and gets back to test pattern, and can test once more this moment.
If in test process; The order of button not to or code value not to the time; Sound does not take place in hummer; The LED lamp does not work, simultaneously below the numeral that shows of charactron U6 and U7 all mixed decimal point represent that present key assignments or button is wrong in proper order, the key of front two demonstration that can be through charactron U6 and U7 number is judged the button sequence number of re-entering.
During production test, one all requires in in-plant scope, to simulate remote telepilot test, therefore, can outer red attenuator be attached to infrared receiving window mouth or RF wireless receiving window, reaches the measuring distance of 10cm to 10m through adjustment infrared attenuating sheet.
Referring to Fig. 5, main program flow chart of the present invention comprises that step is following:
Steps A is opened the power supply of infrared multifunctional infrared test appearance, and program begins to carry out, software for display design date on the display circuit (as Fig. 5 101 shown in);
Step B realizes that PC is connected with the communication of multi-functional infrared test appearance through RS232 interface circuit 9, downloads required decoding agreement, through the required carrier protocol of thin film switch key panel selection, and preference pattern (as Fig. 5 102 shown in);
Step C has judged whether the storage data, and data refer to key assignments required when testing (comprising systematic code and numeric data code).If do not store data, then execution in step D; If the storage data are arranged, then execution in step E (as Fig. 5 103 shown in);
Step D selects reset key+feeler switch+decoding protocol number through the thin film switch key panel, call existing store data and get into test pattern (as Fig. 5 104 shown in);
Step e gets into mode of learning through the numbering of thin film switch key circuit selection learning key+decoding agreement; During study; The telepilot launch window that to be learnt is aimed at the infrared receiving window mouth or the RF receive window of multi-functional infrared test appearance; Press the button that to learn on the telepilot; Then infrared coding data or wireless encoding data are just through being transferred among the single-chip microcomputer U5 after receiving circuit (comprising first infrared receiving circuit, second infrared receiving circuit or the RF wireless transceiver circuit) demodulation, and charactron U6 and U7 go up the systematic code and the numeric data code of corresponding key of demonstration number and IR remote controller; After having pressed the button of telepilot successively, preserve key assignments (comprising systematic code and numeric data code) by preserving key, the key assignments after the preservation (comprising systematic code and numeric data code) can be used for production test (as Fig. 5 105 shown in);
Step F begins to carry out production test; During test; Telepilot launch window to be tested is aimed at the infrared receiving window mouth of multi-functional infrared test appearance, press the button that to test on the IR remote controller, when code value is consistent with the key assignments (comprising systematic code and numeric data code) of storage; Hummer sends short cry, and the LED lamp is bright simultaneously; When the order of all key testings was consistent with the key assignments of preservation (comprising systematic code and numeric data code), hummer sent long cry, and the LED lamp is bright simultaneously, and gets back to test pattern, can test once more this moment (as Fig. 5 106 shown in);
Step G all functions are all consistent accomplish test (as Fig. 5 107 shown in).
Important technological parameters index of the present invention is following:
1, WV: DC 5V;
2, working current: 100mA (Max);
3, the maximum bond number of pressing of recording storage: 80;
4, the decoding width of minimum: 200us;
5, frequency test: infrared 36～58KHZ, RF 30MHZ～3GHZ;
6, power consumption: less than 0.8W.
The foregoing description only is used for further specifying a kind of multi-functional infrared test appearance of the present invention; But the present invention is not limited to embodiment; Every foundation technical spirit of the present invention all falls in the protection domain of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. multi-functional infrared test appearance, it is characterized in that: it comprises: first infrared receiving circuit, second infrared receiving circuit, RF wireless transceiver circuit, single chip circuit, thin film switch key circuit, display circuit, buzzer circuit, LED circuit for lamp, RS232 interface circuit and data storage circuitry; This single chip circuit comprises carrier frequency selection module;
First infrared receiving circuit and second infrared receiving circuit its role is to receive and come from the ir encoded signal that corresponding telepilot sends, and the signal after the demodulation is transferred to single chip circuit;
The RF wireless transceiver circuit its role is to receive and comes from the wireless encoding signal that corresponding telepilot sends, and the signal after the demodulation is transferred to single chip circuit, and the signal of single chip circuit is transmitted to corresponding telepilot;
The thin film switch key circuit its role is to provide the button input, and is transferred to the display circuit circuit to the button trigger pip;
Single chip circuit; Its role is to receive the coding protocol of PC input and be stored in the data storage circuitry; To handling and be stored in the data storage circuitry or corresponding control signal or the shows signal of output from the wireless encoding signal behind the ir encoded signal behind first infrared receiving circuit or second infrared receiving circuit demodulation or the RF wireless transceiver circuit demodulation; To display circuit transfer from the thin film switch key circuit handle and export corresponding control signal by key input signal, to the alerting signal of buzzer circuit with LED circuit for lamp output correspondence; This single chip circuit includes carrier frequency and selects module, and this carrier frequency selects module to its role is to select needed ir encoded signal or RF wireless encoding signal;
Display circuit; The trigger pip that its role is to receive the thin film switch key circuit shows; And this trigger pip transferred to single chip circuit, and receive the processing signals of single chip circuit output, drive charactron, LED display or LED display and show corresponding information;
The RS232 interface circuit its role is to realize that single chip circuit is connected with the communication of PC;
Data storage circuitry, its role is to provides data space for single chip circuit;
The output of the output of first infrared receiving circuit, second infrared receiving circuit is connected to carrier frequency respectively and selects module; The RF wireless transceiver circuit selects module to be connected with carrier frequency; The output of thin film switch key circuit is connected to display circuit; The alerting signal output of single chip circuit is connected to the input of buzzer circuit and LED circuit for lamp respectively; Single chip circuit is connected with display circuit; Single chip circuit is connected with the RS232 interface circuit; Single chip circuit is connected with data storage circuitry.
2. multi-functional infrared test appearance according to claim 1, it is characterized in that: said display circuit comprises charactron, LED display or LCD display and display chip.
3. multi-functional infrared test appearance according to claim 2 is characterized in that: said display chip is that chip and the peripheral circuit element of ZLG7289 constitutes by model, and this chip has the SPI serial line interface.
4. multi-functional infrared test appearance according to claim 1 and 2; It is characterized in that: said thin film switch key circuit exports trigger pip in the display circuit display chip, drives charactron, LED display or LCD display by display chip and shows.
5. multi-functional infrared test appearance according to claim 1; It is characterized in that: also comprise a power circuit, this power circuit provides the voltage of 5V to described first infrared receiving circuit, second infrared receiving circuit, single chip circuit, thin film switch key circuit, display circuit, buzzer circuit, LED circuit for lamp, RS232 interface circuit and data storage circuitry through Switching Power Supply; Described power circuit through three-terminal voltage-stabilizing chip and capacitance voltage stabilizing, provides 3.3V voltage to described RF wireless transceiver circuit through Switching Power Supply.
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| CN2010102302883A CN102339528A (en) | 2010-07-19 | 2010-07-19 | Multifunctional infrared testing instrument |
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| CN2010102302883A CN102339528A (en) | 2010-07-19 | 2010-07-19 | Multifunctional infrared testing instrument |
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| CN104464262A (en) * | 2014-12-05 | 2015-03-25 | 深圳市创荣发电子有限公司 | Method and circuit for controlling remote controller to enter infrared test |
| CN106097701A (en) * | 2016-07-29 | 2016-11-09 | 无锡思泰迪半导体有限公司 | A kind of infrared chip test platform based on FPGA |
| CN108961733A (en) * | 2018-07-03 | 2018-12-07 | 珠海进田电子科技有限公司 | A kind of novel remote controler tester |
| CN112598892A (en) * | 2020-12-11 | 2021-04-02 | 国网河南省电力公司检修公司 | Remote control remote display device of test instrument and control method |
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| WO2002093528A1 (en) * | 2001-05-10 | 2002-11-21 | Thomson Licensing S.A. | Economical extension of the operating distance of an rf remote link accommodating information signals having differing carrier frequencies |
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| CN112598892A (en) * | 2020-12-11 | 2021-04-02 | 国网河南省电力公司检修公司 | Remote control remote display device of test instrument and control method |
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Application publication date: 20120201 |