CN201928286U - Multichannel switching device for pulse-code modulating equipment - Google Patents
Multichannel switching device for pulse-code modulating equipment Download PDFInfo
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- CN201928286U CN201928286U CN2010206856658U CN201020685665U CN201928286U CN 201928286 U CN201928286 U CN 201928286U CN 2010206856658 U CN2010206856658 U CN 2010206856658U CN 201020685665 U CN201020685665 U CN 201020685665U CN 201928286 U CN201928286 U CN 201928286U
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Abstract
The utility model provides a multichannel switching device for pulse-code modulating equipment, which is characterized by comprising a channel switching matrix, a control system, a memory, a counter and a display, wherein the memory, the counter and the display are connected with the control system, the control end of the control system is connected with the control end of the channel switching matrix, and the input end and the output end of the channel switching matrix are used as multichannel switching ports. Setting is carried out by a user through the input end of the control system, the receiving of setting information is controlled by the system, the information is converted into executing codes, the executing codes are simultaneously sent to a memory module for interchanging and storing the codes, the codes are called by the control system according to testing requirements, and therefore the channel switching matrix is triggered to be opened and closed, and channel-state information is fed back to the control system by the channel switching matrix.
Description
Technical field
The utility model relates to a kind of multichannel handoff technique, and particularly relating to is a kind of being used for to carry out device for switching between control impuls coded modulation (being PCM) the equipment audio frequency output channel.
Background technology
When the audio board batch testing is carried out in the industry inherence at present, the most frequently used channel switching equipment is the MS120A channel selector of Amway, it can form audio test system with a passage splitter, but some not enough point of this equipment: the port number of input is few, the inconvenience expansion; Purposes is single, only is fit to the voice channel of test 64K.
The utility model content
The technical problems to be solved in the utility model is: a kind of pulse code modulation equipment multichannel switching device shifter is provided.
The utility model is to solve the problems of the technologies described above the technical scheme of being taked to be: a kind of pulse code modulation equipment multichannel switching device shifter, it is characterized in that: it comprises passage switching matrix, control system and the memory that connects with control system, counter, display, the control end of control system connects with the control end of passage switching matrix, and the input of described passage switching matrix and output are as the multichannel port switching.
Press such scheme, described passage switching matrix is made up of single-chip microcomputer, CPLD, field programmable gate array, flash memory, drive circuit and relay array; Single-chip microcomputer connects by the RS232 bus with described control system; Single-chip microcomputer is connected with field programmable gate array with CPLD respectively, and field programmable gate array is connected with drive circuit with flash memory respectively, and CPLD is connected with flash memory; The output of drive circuit is connected with described relay array.
Press such scheme, described control system comprises that the groove position is provided with that button, passage are provided with that button, time are provided with button, recover to be provided with button, operation button, pause button, conclusion button and 8 inputs of shift knob.
Operation principle of the present utility model is: the user is provided with by the input of control system, system's control receives configuration information and this is converted into run time version with these information, send to these codes of memory module exchange storage simultaneously, control system is come invoke code according to the test needs, thereby opening with closed of trigger port switching matrix, the passage switching matrix feeds back to control system with channel status information.When being in preset state, system control will with directly call the instruction that has been solidificated in advance in the internal storage, these instructions can not be revised by the input of control system, return to initial condition so can arrive when the user's modification entanglement.
The beneficial effects of the utility model are:
1, realized that the multichannel intelligence of many audio board is switched in test, need not manual intervention.
2, test can seamlessly be changed the time, promptly when certain piece audio board is in test mode on the groove position, can change other audio board and test service is unaffected, thereby can carry out continuity test, has effectively improved and has carried testing efficiency and saving production cost.
3, can select arbitrarily so that realize sample testing audio board and passage.
4, circuit level height, cost is low, and is in light weight, easy to operate.
5, can also can be used for the monitoring of security system monitoring and others as the test of 64K audio board.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the structured flowchart of passage switching matrix.
Embodiment
Fig. 1 is the structural representation of the utility model one embodiment, comprise passage switching matrix, control system and the memory that connects with control system, counter, display, the control end of control system connects with the control end of passage switching matrix, and the input of described passage switching matrix and output are as the multichannel port switching; The output of described passage switching matrix also connects with described control system.
Control system, the center of whole system, the configuration information that receives Users panel on the one hand produces various control commands and issues coordination and peripheral circuits running on the other hand.Memory is used to store user's configuration information.Counter is used to add up current running status.Display is used for the display window of user's setting and running status.
Control system comprises that the groove position is provided with that button, passage are provided with that button, time are provided with button, recover to be provided with button, operation button, pause button, conclusion button and 8 inputs of shift knob.The groove position is provided with button, and the transfer sequence when the different audio board of physical location is tested on the groove position is set.Passage is provided with the transfer sequence that button is provided with interchannel when test on the audio board; Time is provided with button the stand-by period that passage switches is set, and unit is second; Recovery is provided with button and presses this button all configuration informations are emptied under any state, and returns to initial condition; The operation button is pressed this button system and is just brought into operation; Pause button is pressed this key with operation suspension in the process of system's operation, press the then operation of start button system afterwards again; Conclusion button is pressed this key with out of service in the process of system's operation, will restart by the operation button this moment again; Shift knob, the through and off of control 220V AC power.
Fig. 2 is the structured flowchart of passage switching matrix, is made up of single-chip microcomputer, CPLD (CPLD), field programmable gate array (FPGA), flash memory (FLASH), drive circuit and relay array; Single-chip microcomputer connects by the RS232 bus with described control system; Single-chip microcomputer is connected with field programmable gate array with CPLD respectively, and field programmable gate array is connected with drive circuit with flash memory respectively, and CPLD is connected with flash memory; The output of drive circuit is connected with described relay array.The quantity of relay is identical with the number of channels that needs to switch, relay of each paths configuration.
Control system adopts interrupt mode to communicate by RS232 universal serial bus and single chip communication, after the instruction of single-chip microcomputer receiving control system, carries out lot of data and handles, then with direct and the most succinct order control FPGA.After powering on, single-chip microcomputer at first carries out initialization, the serial ports mode of operation is set, carry out configuration FPGA subprogram then, control CPLD configuration FPGA, the acquiescence mode is arranged to the form of 2x384 with matrix module, disposed after, Single-chip Controlling FPGA initialization matrix module, open all relays, main program enters wait state then, according to the instruction works of control system.
It is 2 points that single-chip microcomputer mainly acts on: the one, system power on or running in, issue CPLD according to the instruction of control system, control CPLD configuration FPGA; The 2nd, as the intermediate buffering of control system and FPGA, the programming of simplified control system and FPGA sends order and controls its operation to FPGA.CPLD is a Configuration Control Unit, and the layoutprocedure of control FPGA adopts parallel configuration here.FPGA can adopt stacked system to come the expansion I/O port, so that satisfy the quantity of matrix passage.Flash is the configuration data of storage FPGA.The effect of drive circuit is that the little current signal that FPGA sends is amplified, and drives corresponding relay work.Relay is a performer of realizing the passage break-make, its reliability and response speed are directly connected to the performance of system, must use high performance 12V relay (as the G6IIK-2 type) here, and it is compared than 5V relay, have reliability and Signal Spacing degree height, performance is more stable.
Specific operation process is as follows:
Step S1, after the power-on, display screen is shown as preset state behind the machine startup, and have this moment can two kinds of selections:
1) directly begin test by the operation button, system will be undertaken by preset state.
2) according to switching flow being set when the Pretesting needs.In this case as follows:
Step S2 presses the groove position and is provided with, and display screen is shown as the groove position state is set, and by keyboard input starting vessel figure place, the end of input number of slots is pressed the setting that definite key has just been finished the audio board transfer sequence again.
Step S3 presses the lower channel setting, and display screen is shown as passage state is set, and imports initial port number by keyboard, and the end of input port number is pacified the setting that following definite key has just been finished the interchannel transfer sequence again.
Step S4, the time of pressing is provided with, and the display screen time of being shown as is provided with state, by the stand-by period of keyboard input channel switching.
The setting that it is pointed out that step S2 to S4 is separate, that is to say that the sequencing of these three steps can not influence the final effect that is provided with.
Step S5, system just brings into operation by initiating key, in the process of operation, can change current running status by time-out or end key at any time as required.
Claims (3)
1. pulse code modulation equipment multichannel switching device shifter, it is characterized in that: it comprises passage switching matrix, control system and the memory that connects with control system, counter, display, the control end of control system connects with the control end of passage switching matrix, and the input of described passage switching matrix and output are as the multichannel port switching.
2. a kind of pulse code modulation equipment multichannel switching device shifter according to claim 1, it is characterized in that: described passage switching matrix is made up of single-chip microcomputer, CPLD, field programmable gate array, flash memory, drive circuit and relay array; Single-chip microcomputer connects by the RS232 bus with described control system; Single-chip microcomputer is connected with field programmable gate array with CPLD respectively, and field programmable gate array is connected with drive circuit with flash memory respectively, and CPLD is connected with flash memory; The output of drive circuit is connected with described relay array.
3. a kind of pulse code modulation equipment multichannel switching device shifter according to claim 1 and 2 is characterized in that: described control system comprises that the groove position is provided with that button, passage are provided with that button, time are provided with button, recover to be provided with button, operation button, pause button, conclusion button and 8 inputs of shift knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206856658U CN201928286U (en) | 2010-12-29 | 2010-12-29 | Multichannel switching device for pulse-code modulating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206856658U CN201928286U (en) | 2010-12-29 | 2010-12-29 | Multichannel switching device for pulse-code modulating equipment |
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| Publication Number | Publication Date |
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| CN201928286U true CN201928286U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206856658U Expired - Fee Related CN201928286U (en) | 2010-12-29 | 2010-12-29 | Multichannel switching device for pulse-code modulating equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105045188A (en) * | 2015-08-27 | 2015-11-11 | 武汉华宇科技发展有限公司 | Multichannel selection module |
| CN112492234A (en) * | 2020-12-21 | 2021-03-12 | 北京信成科技集团 | Multichannel high-frequency analog signal matrix switching device and control method thereof |
-
2010
- 2010-12-29 CN CN2010206856658U patent/CN201928286U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105045188A (en) * | 2015-08-27 | 2015-11-11 | 武汉华宇科技发展有限公司 | Multichannel selection module |
| CN112492234A (en) * | 2020-12-21 | 2021-03-12 | 北京信成科技集团 | Multichannel high-frequency analog signal matrix switching device and control method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20191229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |