CN101778306A - Visual talkback system debugging equipment - Google Patents
Visual talkback system debugging equipment Download PDFInfo
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- CN101778306A CN101778306A CN201010107564A CN201010107564A CN101778306A CN 101778306 A CN101778306 A CN 101778306A CN 201010107564 A CN201010107564 A CN 201010107564A CN 201010107564 A CN201010107564 A CN 201010107564A CN 101778306 A CN101778306 A CN 101778306A
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Abstract
The invention provides visual talkback system debugging equipment, which consists of a press key module, a main CPU module, a color strip module, a communication module, a matrix switching module, an internal interface, an audio module, a video module, an OSD board module, a power supply module and an external interface module. Through aiming at the problem of difficult equipment failure predication in the visual talkback system debugging and the problems of reserve equipment requirement and low efficiency of a common replacement method, the invention provides the visual talkback system debugging equipment capable of being used for conveniently carrying out various kinds of debugging on a visual talkback system, the visual talkback system debugging equipment can simulate different middle equipment and terminal equipment, and can be connected in a circuit for circuit loop test, and at the same time, the equipment can sent out control commands for communication test and can also be connected in the system for detecting the communication commands in the system.
Description
[technical field]
The present invention relates to a kind of visible dialogue system, particularly a kind of debugging of visible dialogue system and repair apparatus.
[background technology]
Present visible dialogue system, debugging is a very big difficult problem with maintenance, because terminal equipments such as the existing indoor set of visible dialogue system, ladder-port machine, district's mouth machine have intermediate equipments such as networking device, branch distributor again.When mounted, guarantee the normal of whole system, just need debug each link; In addition, when the sub-district visible dialogue system breaks down, also need each link is overhauled.Common problem is, if system works is undesired, will find out equipment unusual or that damage from system.Determine the normal or fault of some equipment, normally adopt substitution method, change suspect device one by one, whether the equipment that judges whether is normal.This method shortcoming is both to have needed a large amount of replacement equipment, more consume a large amount of time, efficient is very low.Simultaneously, when carrying out the examination of total Heibei provincial opera, usually need multiple distinct devices such as oscilloscope, signal generator to debug complex operation, inefficiency.Therefore, need a kind of simpler equipment more easily to carry out the debugging and the maintenance of visible dialogue system.
[summary of the invention]
The technical problem to be solved in the present invention is to overcome existing technical deficiency, and a kind of intercom system commissioning device is provided, and this equipment can be advantageously used in visible dialogue system and carry out various debugging and maintenance.
The present invention is achieved in that a kind of visible dialogue system commissioning device, it is characterized in that: comprise the host CPU module that is used to control the work of each module as primary processor; Can produce the colour bar module of color bar signal as video measurement; The communication module that is used for the communication role of firsts and seconds bus; Be used for the matrix handover module that matrix switch switches; The key-press module that is used for button and input; Internal interface as the inner interconnect function of each intermodule; The audio-frequency module that is used for sound test and keypad tone; The vision signal of input and output is carried out the video module of difference processing; Be used for the operating state of configurations shown device and be used for watching ladder way, district mouthful or the OSD plate module of colour bar vision signal of self; Power module with as audio frequency, video, communicate by letter, the external interface module of total interface of power supply and control signal; Wherein the host CPU module is connected with key-press module, audio-frequency module, OSD module, communication module, internal interface, colour bar module and matrix handover module respectively, the matrix handover module is connected with audio-frequency module colour bar module, video module, interface, internal interface is connected with audio-frequency module, video module, external interface module respectively, and communication module, OSD plate module, power module are connected with external interface module respectively.
Described host CPU module comprises that a STC (U1) chip does primary processor, and this chip has static RAM (SRAM) in 32kB high speed Flash memory, the 1280B sheet, has the ISP/IAP download function, the 5V power supply, and external crystal-controlled oscillation X2 frequency is 22.1184MHz.
Described audio-frequency module comprises an integrating circuit and LM386 (U2) amplifier circuit, and the square wave that produces 1KHz with host CPU module I/O mouth P0.1 is received the DA port, changes into the sine wave of 1KHz through integrating circuit, is used for the sound test and produces keypad tone; In the described integrating circuit, triode Q1 serves as on-off action, and R15 and C 3, R16 and C4, R17 and C5 form three grades of integrating circuit; E2 plays the effect of stopping direct current.Audio frequency inserts the LM386 chip from the AUDIO1 port and amplifies, R12 is that the potentiometer with 10K Ω is used for regulating audio voltage amplitude size, audio signal is amplified the back through the LM386 chip and is exported from pin 5 (Vout), through the RC filter circuit that C15 (0.1uF), C16 (0.1uF) and R35 (10K Ω) form, the filtering high frequency noise is after the audio signal of capacitance E4 after directly is passed to loudspeaker; Audio signal is passed through T1, T2 and the coupling of T3 audio frequency transformer to bus.
Described communication module comprise be used for the one-level bus communication CAN controller MCP2510 (U5) chip with CAN transceiver PCA82C250 (U3) chip, be used to carry out RS485 (U4) interface chip that secondary bus communicates by letter and the level shifting circuit that is used for the serial communication of indoor set, wherein 12 of MCP2510 to 17 pins draw on respectively the resistance of 10K Ω to be connected to corresponding I/O interface and the host CPU module communication of CPU (U1), 7 and 8 pins connect the 16MHz crystal oscillator, and 1,2 bipods connect 1,4 pins of PCA82C250 chip; The CANL of PCA82C250 chip and CANH interface are linked on the YIJI_CANL and YIJI_CANH line of one-level bus; On the secondary bus, communicate by RS485 (U4) interface chip and ladder-port machine and splitter, RXD, TXD communicate by letter with host CPU with the P0.7 pin with P 3.0, P 3.1 that RS485EN receives STC (U1) chip of host CPU module, and the pin A of U4 and B insert buses at a 10K resistance R 21 an and R36 10K resistance R in parallel again 27 backs of connecting respectively; The level shifting circuit of the serial communication circuit of indoor set is built with triode Q3, Q4, Q10.
Described colour bar module produces the colour bar vision signal by SAA7121 (U6) coding and decoding video chip, is used for video measurement.This SAA7121 chip is by 3.3V power supply power supply, and 41 and 42 pins of SAA7121 chip are connected respectively, and one 470 Ω resistance is used for and host CPU carries out the I2C bus communication, receives control command; X3 is the crystal oscillator of 27MHz, for the SAA7121 chip provides the clock source; C12 is used for doing and moves back even electric capacity; The colour bar vision signal is from the 30 pins output of SAA7121 chip.
Described matrix handover module comprises MT8816 (U8) chip and 74HC595 (U9) chip, wherein the MT8816 chip is used for the matrix switch switching, the 74HC595 chip is used for expanding the delivery outlet of host CPU, be used to control the MT8816 chip and do the matrix switching, wherein F_DATA, F_CLK pin are used for the serial received data, the F_LATCH pin is put high latch data, and the parallel delivery outlet of 74HC595 chip is received the capable AX0-AX3 of MT8816 chip and row AY0-AY2 control interface respectively and is used for the gating matrix switch and switches; Matrix switch switches the audio/video that comes processing configuration device self and the audio frequency and video of external equipment are connected.
Described key-press module uses 4*5 matrix press-key commonly used, and STC (U1) chip by the host CPU module carries out key scan to be handled, and internal interface comprises JP1 and the JP4 connectivity port as each intermodule of device interior.
Described external interface module has 9 common interfaces and uses to the user, and wherein J2 is+the 18V power input interface; The interface that RJ3, RJ4, RJ6, RJ8 use when networking device for simulation; RJ1 uses interface when being simulation region mouth machine; RJ2 uses when being simulation AH61 splitter; RJ3 uses for simulation AH63 splitter; RJ5 uses when being the simulation indoor set.
Described video module uses EL5171 (U10, U12) chip and EL5172 (U11, U13) chip that the vision signal of input and output is carried out balanced differential respectively and handles, and makes video can carry out long-distance transmissions.Wherein the application of EL5171 is as follows: EL5171 by+5V and-power supply of 5V power supply, capacitor C 21 and C29 have been used for power supply filtering and move back even effect; Vision signal is imported from the YIJ1_V3OUT port, electric capacity E5 (4.7uF/16V) plays every straight effect, resistance R 48 (10K) is received IN+ and two pins of REF of U10 respectively, for U10 provides the input reference, R51, R50, R70 and C20, R49 forms a video amplifier circuit, the amplification of low frequency signal is closed: (OUT+)-(OUT-)=and VI*[1+ (R51+R70)/R50], high-frequency signal be (OUT+)-(OUT-)=VI*[1+ (R51+R70)/R49], vision signal is after the difference balance is amplified, from two ports outputs of OUT+ and OUT-, C22 and R53 are used for the filtering low-frequency disturbance.The application of EL5172 is as follows: EL5172 also by+5V and-power supply of 5V power supply, capacitor C 26 and C25 have been used for power supply filtering and move back even effect; Difference video signal is by AH63_V+ and AH63_V-input, R55 and R57 are used for protective circuit, electric capacity E7 and E8 play the stopping direct current effect, the circuit that R58, R59, R56, R54 and C24 form is used for regulating two inputs, make two absolute values of importing reference voltage over the ground equate that signal is exported from OUT+ after EL5172 handles; REF ground connection is for input signal provides reference voltage.
Described power module comprises that three MP1430 (U2, U3, U4) chip makes 3 groups of power supplys respectively, output is respectively+12V ,+5V and-5V, produce 3.3V voltage with the step-down of SPX1117M chip.Wherein the 12V power supply is powered to the OSD plate, and+5V power supply is given host CPU, CAN, 485 circuit supplies ,+5V and-5V gives video module (108) power supply together ,+3.3V power supply is given the colour bar module for power supply.The MP1430 chip is used for an input+18V voltage step-down for exporting accordingly, now set forth its concrete application with the MP1430 power circuit of+12V output, as Figure 20 1H, the 18V power supply is imported from VI N port, diode D1 is used for preventing that power supply is anti-inserted, C1, C2, C8 and L1 form one sends the type filter circuit, after the interference of filtering by the power supply input, receives MP1430 input pin IN; The enable pin EN of MP1430 connects the pull-up resistor of a 100K ohm to input IN; The SS port is the soft start port, and one 104 electric capacity (C9) of going here and there are to ground, and it is 10ms that soft-start period is set; The COMP pin of MP1430 is used for the compensation calibration circuit controls, connects a RC circuit that C10 (1nf), C11 (100nf) and R3 (7.5K) composition are arranged from the COMP pin to GND; The SW of MP1430 is the output of Switching Power Supply, is connected to the pin 2 of voltage-stabiliser tube SS24 (D2), receives a secondary π type filter network of being made up of L4, L7, C24, C26, C25, C27 again, provides power supply for load after the filtering; The FB pin is a feedback input end, and output is fed back to MP1430, regulates output, and regulating formula is Vou t=1.22* (R11+R12+R13)/R13.SPX1117M (U5) chip is used for the power supply step-down of handle+5V and is+3.3V output.
Described OSD plate module comprises the special-purpose OSD chip of AH3_OSD_F (JP2), R20 picture contrast adjuster and R21 image chroma adjuster.AH3_OSD_F the 3rd pin OSDV_OUT wherein, produce the operating state that character signal is used for the configurations shown device, the the 4th to 6 pin is received STC (U1) chip of host CPU module by internal interface JP4, the 4th pin OSD_DATA receives the control data signal of host CPU, the 5th pin OSD_CLK receives the clock signal of host CPU, the busy signal when the 6th pin OSD_BUSY is the OSD chip operation.
The present invention is directed to the equipment fault difficult judgment that runs in the visible dialogue system debugging, there is the problem that needs backup device and inefficiency in common substitution method, proposed a kind ofly can be used for visible dialogue system, carried out the intercom system commissioning device of various debugging easily, its advantage is as follows:
1, whether can simulate different intermediate equipments, for example can simulate the function of splitter or distributor, directly connect indoor unit, it is normal to be used to test indoor unit; Whether also can simulate the networking device, it is normal to be used for testing ladder-port machine.
2, whether can simulate different terminal equipments, for example simulate indoor set, directly connect splitter, it is normal to be used for the test branch device; The simulation ladder-port machine directly connects the networking device, and whether be used for testing the networking device normal; The Simulation Center supervisor connects to advance bus, and whether the test bus order is normal.
3, also can connect in the line, carry out the line loop test.
4, this equipment can send control command simultaneously, carries out communication test, the communication signaling on the run-down lines, and check.
5, can be connected in the system communication command in the detection system.
[description of drawings]
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the system block diagram of visible dialogue system commissioning device of the present invention.
Fig. 2 is the circuit connection diagram of the host CPU module of visible dialogue system commissioning device of the present invention.
Fig. 3 is the circuit connection diagram of the audio-frequency module of visible dialogue system commissioning device of the present invention.
Fig. 4 is the circuit connection diagram of the communication module of visible dialogue system commissioning device of the present invention.
Fig. 5 is the circuit connection diagram of the colour bar module of visible dialogue system commissioning device of the present invention.
Fig. 6 is the circuit connection diagram of the matrix handover module of visible dialogue system commissioning device of the present invention.
Fig. 7 is the circuit connection diagram of the key-press module of visible dialogue system commissioning device of the present invention.
Fig. 8 is the circuit connection diagram of the internal interface of visible dialogue system commissioning device of the present invention.
Fig. 9 is the circuit connection diagram of the external interface module of visible dialogue system commissioning device of the present invention.
Figure 10 is the circuit connection diagram of the video module of visible dialogue system commissioning device of the present invention.
Figure 11 is the circuit connection diagram of the power module of visible dialogue system commissioning device of the present invention.
Figure 12 is the circuit connection diagram of the OSD module of visible dialogue system commissioning device of the present invention.
[embodiment]
See also Fig. 1, a kind of visible dialogue system commissioning device, it is characterized in that: comprise by key-press module 106, the host CPU module 101 that is used to control the work of each module as primary processor, can produce the colour bar module 104 of color bar signal as video measurement, the communication module 103 that is used for the communication role of firsts and seconds bus, matrix handover module 105, internal interface 107 as the inner interconnect function of each intermodule, be used for the audio-frequency module 102 that sound test and keypad tone produce, the vision signal of input and output is carried out the video module 108 of difference processing, be used for the operating state of configurations shown device and be used for watching ladder way, the OSD plate module 301 of district's mouth or the colour bar vision signal of self, power module 201 and as audio frequency, video, communication, the external interface module 203 of total interface of power supply and control signal, wherein host CPU module 101 respectively with key-press module 104, audio-frequency module 102, OSD module 301, communication module 103, internal interface 107, colour bar module 104 is connected with matrix handover module 105, matrix handover module 105 and audio-frequency module 102, colour bar module 104, video module 108, internal interface 107 connects, internal interface 107 respectively with audio-frequency module 102, video module 108, external interface module 203 connects communication module 103, OSD plate module 301, power module 201 is connected with external interface module 203 respectively.
See also Fig. 2, described host CPU module 101 uses STC89C58RD+ (U1) single-chip microcomputer to make the host CPU processor, and this chip has static RAM (SRAM) in 32kB high speed Flash memory, the 1280B sheet, has the ISP/IAP download function, + 5V power supply, external crystal-controlled oscillation X2 frequency is 22.1184MHz.I/O interface P0.0, the P1.0 of host CPU are used for doing keystroke interface to P1.7; P 3.0, P3.1 and P 0.7 are serial communication interface, and the RS485EN that P0.7 is used for controlling RS485 (U4) chip enables interface, and the RX signal that P3.0 and P 3.1 connect the letter modules receives and TX signal transmission interface; P3.2, P2.7, P2.6, P2.5, P2.4 and P2.3 are used for being connected the SPI interface of CAN chip CANIN, CANCS, CANRSET, CANCLK, CANMI SO and CANMOS I in the communication module; P2.0, P2.1 are connected the control interface of OSD modular LCD _ D, LCD_B and LCD_C with P2.2; P0.1, P0.2, P0.3 connect 10K Ω pull-up resistor and arrive+5V, connect DA, F_DATA, the F_CLK interface of colour bar module 104; P0.4, P 0.5, P0.6, P0.7, P3.6, P3.7 connect F_LATCH, SAA_SCL, SAA_SDA, MTSTR, MTDATA, the MTCS interface of gating matrix handover module 105.
As shown in Figure 3, described audio-frequency module 102 comprises an integrating circuit and LM386 (U2) amplifier circuit, and the I/O mouth P0.1 of host CPU produces the square wave of 1KHz and receives the DA port, changes into the sine wave of 1KHz through integrating circuit, is used for the sound test and produces keypad tone; In the described integrating circuit, triode Q1 serves as on-off action, and R15 and C3, R16 and C4, R17 and C5 form three grades of integrating circuit; E2 plays the effect of stopping direct current.Audio frequency inserts LM386 (U2) chip from the AUDIO1 port and amplifies, R12 is that the some position device with 10K Ω is used for regulating audio voltage amplitude size, audio signal is amplified the back from pin 5 (Vout) output through the LM386 chip, through the RC filter circuit filtering high frequency noise of C15 (0.1uF), C16 (0.1uF) and R 35 (10K Ω) composition after capacitance E4 every directly being passed to loudspeaker; Audio signal is passed through T1, T2 and the coupling of T3 audio frequency transformer to bus.
As shown in Figure 4, described communication module 103 uses CAN controller MCP2510 (U5) chip to carry out the communication of one-level bus, the resistance that 12 to 17 pins of MCP2510 draw 10K Ω on respectively is to+5V, be connected to the corresponding interface and the host CPU module communication of host CPU module 101,7 and 8 pins connect the 16MHz crystal oscillator, and 1,2 bipods connect 1,4 pins of CAN transceiver PCA82C250 (U3) chip; The CANL of PCA82C250 chip and CANH interface are linked on the YIJI_CANL and YIJI_CANH line of one-level bus; On the secondary bus, communicate by RS485 (U4) interface chip and ladder-port machine and splitter, RXD, TXD communicate by letter with host CPU with P 0.7 pin with P3.0, P3.1 that RS485EN receives STC (U1) chip of host CPU module, and the pin A of U4 and B insert buses at a 10K resistance R 21 an and R36 10K resistance R in parallel again 27 backs of connecting respectively; The level shifting circuit of the serial communication circuit of indoor set is built with triode Q3, Q4, Q10.
As shown in Figure 5, described colour bar module 104 produces the colour bar vision signal by SAA7121 (U6) coding and decoding video chip, is used for video measurement.This SAA7121 chip is by the power supply of+3.3V power supply, and 41 and 42 pins of SAA7121 chip are connected respectively, and one 470 Ω resistance is used for and host CPU module 101 is carried out the I2C bus communication, receives control command; X3 is the crystal oscillator of 27MHz, for the SAA7121 chip provides the clock source; C12 is used for doing and moves back even electric capacity; The colour bar vision signal is from the 30 pins output of SAA7121 chip.
As shown in Figure 6, described matrix handover module 105 comprises MT8816 (U8) chip and 74HC595 (U9) chip, wherein the MT8816 chip is used to carry out the matrix switch switching, the 74HC595 chip is used for expanding the delivery outlet of host CPU module, be used to control the MT8816 chip and do the matrix switching, wherein F_DATA, F_CLK pin are used for the serial received data, the F_LATCH pin is put high latch data, and the parallel delivery outlet of 4HC595 chip is received the AX0-AX3 of MT8816 chip and AY0-AY2 control interface respectively and is used for the gating matrix switch and switches; The MT8816 chip switches being connected of audio frequency and video of the audio/video that comes processing configuration device self and external equipment by matrix switch.
As shown in Figure 7 and Figure 8, described key-press module 106 uses 4*5 button commonly used, and STC (U1) chip by host CPU carries out key scan to be handled, and internal interface 107 comprises interface JP1 and JP4, as the connectivity port of each intermodule of device interior.
As shown in Figure 9, described external interface module 203 comprises that following 9 interfaces commonly used use to the user, and wherein J2 is+input of 18V power supply; The interface that RJ3, RJ4, RJ6, RJ8 use when networking device for simulation; RJ1 uses interface when being simulation region mouth machine; RJ2 uses when being simulation 61 splitters; RJ3 uses for simulation 63 splitters; RJ5 uses when being the simulation indoor set.
As shown in figure 10, described video module 108 uses EL5171 (U10, U12) chip and EL5172 (U11, U13) chip that the vision signal of input and output is carried out balanced differential respectively and handles, and makes video can carry out long-distance transmissions.Respectively the application of EL5171 and EL5172 is specifically described below: the application of EL5171, shown in the circuit of EL5171 among Figure 10 (U10) part, EL5171 by+5V and-power supply of 5V power supply, capacitor C 21 and C29 have been used for power supply filtering and move back even effect; Vision signal is imported from YI JI_V 3OUT port, electric capacity E5 (4.7uF/16V) plays every straight effect, resistance R 48 (10K) is received IN+ and two pins of REF of U10 respectively, for U10 provides the input reference, R51, R50, R70 and C20, R49 forms a video amplifier circuit, the amplification of low frequency signal is closed: (OUT+)-(OUT-)=and VI*[1+ (R51+R70)/R50], high-frequency signal be (OUT+)-(OUT-)=VI*[1+ (R51+R70)/R49], vision signal is after the difference balance is amplified, from two ports outputs of OUT+ and OUT-, C22 and R53 are used for the filtering low-frequency disturbance.The application of EL5172 shown in EL5172 (U11) and peripheral circuit thereof, also by+5V and-power supply of 5V power supply, capacitor C 26 and C25 have been used for power supply filtering and move back even effect; Difference video signal is by AH63_V+ and AH63_V-input, R55 and R57 are used for protective circuit, electric capacity E7 and E8 play the stopping direct current effect, the circuit that R58, R59, R56, R54 and C24 form is used for regulating two inputs, make two absolute values of importing reference voltage over the ground equate that signal is exported from OUT+ after EL5172 handles; REF ground connection is for input signal provides reference voltage.
As shown in figure 11, described power module 201 comprises that three MP1430 (U2, U3, U4) chip makes 3 groups of power supplys respectively, output is respectively+12V ,+5V and-5V, with SPX1117M chip step-down generation+3.3V voltage.Wherein+the 12V power supply powers to OSD plate module 108 ,+5V power supply is given host CPU, CAN, 485 circuit supplies ,+5V and-5V gives video module (108) power supply together ,+3.3V power supply is given the colour bar module for power supply.The MP1430 chip be used for input+the 18V voltage step-down is converted to corresponding output, now set forth its concrete application with the MP1430 power circuit of+12V output, as Figure 20 1H, the 18V power supply is imported from the VIN port, diode D1 is used for preventing that power supply is anti-inserted, C1, C2, C8 and L1 form one sends the type filter circuit, after the interference of filtering by the power supply input, receives MP1430 input pin IN; The enable pin EN of MP1430 connects the pull-up resistor of a 100K ohm to input IN; The SS port is the soft start port, and one 104 electric capacity (C9) of going here and there are to ground, and it is 10ms that soft-start period is set; The COMP pin of MP1430 is used for the compensation calibration circuit controls, connects a RC circuit that C10 (1nf), C11 (100nf) and R3 (7.5K) composition are arranged from the COMP pin to GND; The SW of MP1430 is the output of Switching Power Supply, is connected to the pin 2 of voltage-stabiliser tube SS24 (D2), receives a secondary π type filter network of being made up of L4, L7, C24, C26, C25, C27 again, provides power supply for load after the filtering; The FB pin is a feedback input end, and output is fed back to MP1430, regulates output, and the adjusting formula is Vout=1.22* (R11+R12+R13)/R13.SPX1117M (U5) chip is used for the power supply step-down of handle+5V and is+3.3V output.
As shown in figure 12, described OSD plate module 301 comprises the special-purpose OSD chip of AH3_OSD_F (JP2), R20 picture contrast adjuster and R21 image chroma adjuster.AH3_OSD_F the 3rd pin OSDV_OUT wherein, produce the operating state that character signal is used for the configurations shown device, the the 4th to 6 pin is received STC (U1) chip of host CPU module by internal interface JP4, the 4th pin OSD_DATA receives the control data signal of host CPU, the 5th pin OSD_CLK receives the clock signal of host CPU, the busy signal when the 6th pin OSD_BUSY is the OSD chip operation.
Be example with audio frequency, video measurement below, visible dialogue system commissioning device of the present invention be described in detail visible dialogue system:
Because visible dialogue system commissioning device of the present invention has the function of colour bar generator, audio-frequency generator, the vision signal of show bus that can be simultaneously real-time, whether the audio signal of real-time monitoring bus, it is normal to test I and II audio frequency and video path easily.And having CAN, the transmitter/receiver circuit of 485 and 232 signals can receive and send the control and the call command of I and II bus.Concrete operation principle is as follows:
1, test one-level audio frequency:
This equipment is placed on the networking device or a mouthful seat in the plane, district is put
(1) this equipment sends to order and allows switch produce audio frequency, receives and judges whether voice-frequency channel is normal.
(2) this equipment produces audio frequency, and the concurrent order of losing one's life allows switch through after the matrix switch, turns back to this equipment and receives, and judges whether audio frequency bidirectional path and matrix switch be normal.
The idiographic flow example is as follows:
1) by operation push-button module 106, OSD plate module 301 shows relevant GUI information, enters one-level audio-frequency test menu;
2) by key-press module 106 choice menus " the one-level audio frequency is from acceptance test ";
3) host CPU module 101 connects the pull-up resistor that R3 is 10K Ω, and producing frequency by the P0.1 mouth is the square wave of 1KHz, changes into the sine wave of 1KHz through audio-frequency module 102, is used for sound test and keypad tone; In the integrating circuit, triode Q1 serves as on-off action, and R15 and C3, R16 and C4, R17 and C5 form three grades of integrating circuit; E2 plays the effect of stopping direct current.
4) port of simulation networking device or district mouthful machine X0 is connected in the host CPU module 101 gating matrix handover modules 105, the AUDIO2 that opens audio-frequency module 102 and interface module 107; Matrix handover module 105 uses the matrix handover modules to carry out switch to switch, and the MT8816 chip can realize that 8 take advantage of 16 matrix switch, and P 3.5, P3.6, P3.7, P0.2, P0.3, the P0.4 by host CPU controls the MT8816 chip and make matrix switch and switch.
5) host CPU module 101 is passed through the CAN interface of communication module 103 to switch sending metrix switching command; Communication module 103 uses CAN controller MCP2510 (U5) chip to carry out communicating by letter of one-level bus with CAN transceiver PCA82C250 (U3) chip; Carry out the communication of secondary bus by RS485 (U4) interface chip.
6) the switch root of hair switches according to the corresponding command matrix, and audible feedback is returned configurator;
7) configurator is received audio-frequency module 102 to audio frequency by interface module 107 and matrix handover module 105, and the loudspeaker ripple of audio-frequency module 102 goes out sound, and the expression voice communication is normal.
2, test one-level video:
This equipment is placed on the networking device or a mouthful seat in the plane, district is put
(1) this equipment sends to order and allows switch produce video.Receive and judge whether the sound visual pathway is normal.
(2) this equipment produces vision signal, and the concurrent order of losing one's life allows switch through after the matrix switch, turns back to this equipment and receives, and judges whether video bi-directional path and matrix switch be normal.
3, test secondary audio frequency:
Be placed on this equipment indoor or the ladder-port machine position
(1) ladder way produces audio signal.This equipment receives judges whether voice-frequency channel is normal.
(2) this equipment produces audio signal, and sends call command after networking device machine matrix switch, receives to indoor set, judges whether voice-frequency channel and matrix switch be normal.
4, test secondary video:
Be placed on this equipment indoor or the ladder-port machine position
(1) ladder way produces vision signal.This equipment receives judges whether video frequency channel is normal.
(2) this equipment produces the colour bar vision signal, and sends call command after networking device machine matrix switch, receives to indoor set, judges whether video frequency channel and matrix switch be normal.
The idiographic flow example is as follows:
1) by operation push-button module 106, OSD module 301 shows relevant GUI information, enters secondary video measurement menu;
2) by operation push-button module 106 choice menus " simulation indoor set ";
3) host CPU " is checked the ladder way video commands " by communication module 103 to ladder way and transmission; Communication module 103 uses CAN controller MCP2510 (U5) chip to carry out communicating by letter of one-level bus with CAN transceiver PCA82C250 (U3) chip; Use RS485 (U4) interface chip to carry out the communication of secondary bus; " check the ladder way video commands " by sending on the secondary bus by RS485 (U4) interface chip.
4) ladder-port machine is opened camera according to the corresponding command, and video line is cut to corresponding " indoor set ";
5) host CPU module 101 gating matrix handover modules 105 are opened the connection between the ERJI_VOUT port of OSD_V, video module (108) of OSD plate module 301;
6) configurator goes out the image that ladder way is taken by the screen display of OSD module 301, and expression secondary video is normal.
5, vision signal output: configurator can produce vision signal and output on the circuit, and the signal source of other equipment video debugging is provided.
6, vision signal monitoring: directly video is presented on the screen, to check the quality of vision signal.
7, audio signal produces: produce a fixing audio signal output to circuit, with the quality of checkout facility.
8, audio signal monitoring: directly the audio signal output of circuit to loudspeaker, to monitor the quality of audio signal.
Equally, the principle and the process of other each several part maintenance of visible dialogue system, similar to the above process substantially.So the present invention both can simulate different intermediate equipments, for example can simulate the function of splitter, distributor, directly connect indoor unit, whether be used to test indoor unit normal; Whether can simulate the networking device, it is normal to be used for testing ladder-port machine.Whether can simulate different terminal equipments again, for example simulate indoor set, directly connect splitter, it is normal to be used for the test branch device; The simulation ladder-port machine directly connects the networking device, and whether be used for testing the networking device normal; The Simulation Center supervisor connects to advance bus, and whether the test bus order is normal.Also can connect in the line simultaneously, carry out the line loop test.This equipment can also send control command in addition, carries out communication test, the communication signaling on the run-down lines, and check; Can be connected in the system communication command in the detection system again.Therefore this equipment can be used for visible dialogue system and carries out various debugging easily.
Claims (9)
1. visible dialogue system commissioning device is characterized in that: comprise the host CPU module that is used to control the work of each module as primary processor; Can produce the colour bar module of color bar signal as video measurement; The communication module that is used for the communication role of firsts and seconds bus; Be used for the matrix handover module that matrix switch switches; The key-press module that is used for button and input; Internal interface as the inner interconnect function of each intermodule; The audio-frequency module that is used for sound test and keypad tone; The vision signal of input and output is carried out the video module of difference processing; Be used for the operating state of configurations shown device and be used for watching ladder way, district mouthful or the OSD plate module of colour bar vision signal of self; Power module with as audio frequency, video, communicate by letter, the external interface module of total interface of power supply and control signal; Wherein the host CPU module is connected with key-press module, audio-frequency module, OSD module, communication module, internal interface, colour bar module and matrix handover module respectively, the matrix handover module is connected with audio-frequency module colour bar module, video module, internal interface, internal interface is connected with audio-frequency module, video module, external interface module respectively, and communication module, OSD plate module, power module are connected with external interface module respectively.
2. visible dialogue system commissioning device according to claim 1, it is characterized in that: described host CPU module comprises that a STC chip does primary processor, this chip has static RAM (SRAM) in 32kB high speed Flash memory, the 1280B sheet, has the ISP/IAP download function, the 5V power supply, the external crystal-controlled oscillation frequency is 22.1184MHz.
3. visible dialogue system commissioning device according to claim 1, it is characterized in that: described audio-frequency module comprises an integrating circuit and LM386 amplifier, the sinusoidal wave audio frequency signal that the square wave that produces with the host CPU module changes into through integrating circuit, be used for the sound test and produce keypad tone, audio frequency is input to the LM386 chip and amplifies back output.
4. visible dialogue system commissioning device according to claim 1 is characterized in that: described communication module comprise be used for the one-level bus communication CAN controller MCP2510 chip with CAN transceiver PCA82C250 chip, be used to carry out RS485 interface chip that secondary bus communicates by letter and the level shifting circuit that is used for the serial communication of indoor set.
5. visible dialogue system commissioning device according to claim 1 is characterized in that: described colour bar module produces color bar signal by SAA7121 coding and decoding video chip, is used for video measurement.
6. visible dialogue system commissioning device according to claim 1, it is characterized in that: described matrix handover module comprises MT8816 chip and 74HC595 chip, wherein the MT8816 chip is used to carry out matrix switch and switches, and the 74HC595 chip is used for the delivery outlet of extension CPU.
7. visible dialogue system commissioning device according to claim 1 is characterized in that: described video module uses EL5171 chip and EL5172 chip that the vision signal of input and output is carried out balanced differential respectively and handles, and makes video can carry out long-distance transmissions.
8. visible dialogue system commissioning device according to claim 1, it is characterized in that: described power module comprises that three MP1430 chips make 3 groups of power supplys respectively, output be respectively 12V ,+5V and-5V, produce 3.3V voltage with the step-down of SPX1117M chip, wherein the 12V power supply is powered to the OSD plate module, + 5V power supply is supplied with host CPU module and communication module ,+5V and-the 5V power supply powers to video module ,+3.3V power supply is given the colour bar module for power supply.
9. visible dialogue system commissioning device according to claim 1, it is characterized in that: described OSD plate module comprises the AH3_OSD_F chip, the R20 picture contrast is regulated and the R21 image chroma is regulated, the 3rd pin OSDV_OUT of AH3_OSD_F wherein, the generation character signal is used for operating state the 4th to 6 pin of configurations shown device and receives the host CPU module by internal interface JP4, the 4th pin OSD_DATA receives the control data signal of host CPU module, the 5th pin OSD_CLK receives the clock signal of host CPU module, the busy signal when the 6th pin OSD_BUSY is the OSD chip operation.
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| CN106488378A (en) * | 2016-12-30 | 2017-03-08 | 广州市保伦电子有限公司 | A kind of speaker loop state detection means |
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