CN108152646A - A kind of telephony interface test device and method - Google Patents
A kind of telephony interface test device and method Download PDFInfo
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- CN108152646A CN108152646A CN201711257981.8A CN201711257981A CN108152646A CN 108152646 A CN108152646 A CN 108152646A CN 201711257981 A CN201711257981 A CN 201711257981A CN 108152646 A CN108152646 A CN 108152646A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
The invention discloses a kind of telephony interface test device and methods, wherein, the telephony interface test device includes subscriber interface module, master controller, impedance setup module, interface module and detection module, and master controller is used for the first control signal of the corresponding control impedance setup module of interface parameters output sent according to subscriber interface module；Impedance setup module, including one or more impedance networks, for being set as the impedance network that telephony interface to be tested is correspondingly connected with and the matched Two-port netwerk impedance network of telephony interface to be tested according to first control signal；Interface module, including one or more interfaces, the impedance network in impedance setup module and telephony interface to be tested are correspondingly connected with by interface in test.A kind of telephony interface test device and method provided by the invention can simulate country variant or the telephone set impedance network model in area when testing telephony interface, improve the reliability of telephony interface test.
Description
Technical field
The present invention relates to the communication technology, espespecially a kind of telephony interface test device and method.
Background technology
Phone is a kind of common office equipment, in many access devices such as Convergence gateway, integrated access equipment
On (Integrated Access Device, abbreviation IAD) and interchanger all can supporting telephone interface, usual telephony interface connecing
Functional test will be carried out before entering equipment manufacture.
At present, the test of access device telephony interface is mainly realized by manually dislodging machine, particular by artificial
It dials or hangs up the telephone come the quality for judging call voice, so as to fulfill the test to access device telephony interface.However, due to
Telephonic standards used in country variant and different regions are different, using the test method of current artificial dislodging machine, Zhi Neng
Service condition of the test phone on access device under standard used in current country, can not pair with current country or
Area is effectively tested using the telephony interface of various criterion, therefore causes the reliability of test low.
Invention content
In order to solve the above technical problem, the present invention provides a kind of telephony interface test device and methods, can survey
Simulation country variant or the telephone set impedance network model in area during telephony interface are tried, improves the reliable of telephony interface test
Property.
On the one hand, the present invention provides a kind of telephony interface test device, including：Subscriber interface module, master controller, resistance
Anti- setup module, interface module and detection module, wherein：
The subscriber interface module, for receiving the interface parameters of the telephony interface to be tested of user's transmission, and by described in
Interface parameters is sent to the master controller；And show the detection data that the master controller is sent；
The master controller, for exporting corresponding the first control for controlling the impedance setup module according to the interface parameters
Signal processed and, the detection data that the detection module is sent is sent to the subscriber interface module；
The impedance setup module, including one or more impedance networks, for according to the first control signal by institute
The impedance network that telephony interface to be tested is correspondingly connected with is stated to be set as and the matched Two-port netwerk impedance of telephony interface to be tested
Network；
The interface module, including one or more interfaces, the interface will be in the impedance setup module in test
Impedance network be correspondingly connected with the telephony interface to be tested；
The detection module, for acquiring the testing number of the telephony interface to be tested being connect with the interface module
According to, and the detection data of acquisition is sent to the master controller.
On the other hand, the present invention provides a kind of telephony interface test method, following steps are specifically included：
Obtain the interface parameters of telephony interface to be tested.
Corresponding first control signal, the impedance network that telephony interface to be tested is correspondingly connected with are exported according to interface parameters
It is set as and the matched Two-port netwerk impedance network of telephony interface to be tested.
Acquire the detection data of telephony interface to be tested.
Telephony interface test device and method provided in an embodiment of the present invention include one or more impedance nets by setting
The impedance setup module of network to simulate the standard telephone set of country variant and area, is believed according to the control that master controller exports
Number the impedance network that telephony interface to be tested is correspondingly connected with is set as and the matched Two-port netwerk impedance net of telephony interface to be tested
Network, so as to which country variant or regional telephone set impedance network model can be simulated when test telephony interface, without inserting repeatedly
Phone is pulled out, versatility is good, improves the reliability of telephony interface test.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that being understood by implementing the present invention.The purpose of the present invention and other advantages can be by specification, rights
Specifically noted structure is realized and is obtained in claim and attached drawing.
Description of the drawings
Attached drawing is used for providing further understanding technical solution of the present invention, and a part for constitution instruction, with this
The embodiment of application technical solution for explaining the present invention together, does not form the limitation to technical solution of the present invention.
Fig. 1 is the structure diagram of telephony interface test device that the embodiment of the present invention one provides；
Fig. 2 is the structure diagram of multiport DC communication detection circuit provided in an embodiment of the present invention；
Fig. 3 is the circuit diagram of single port impedance network provided in an embodiment of the present invention；
Fig. 4 is the structure diagram of multiport impedance network provided in an embodiment of the present invention；
Fig. 5 is the structure diagram of telephony interface test device provided by Embodiment 2 of the present invention；
Fig. 6 is the circuit diagram of switchgear module provided in an embodiment of the present invention；
Fig. 7 is the structure diagram that telephony interface provided in an embodiment of the present invention tests system；
Fig. 8 is the flow chart of telephony interface test method provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature mutually can arbitrarily combine.
Step shown in the flowchart of the accompanying drawings can be in the computer system of such as a group of computer-executable instructions
It performs.Also, although logical order is shown in flow charts, it in some cases, can be to be different from herein suitable
Sequence performs shown or described step.
Fig. 1 is the structure diagram of telephony interface test device that the embodiment of the present invention one provides, as shown in Figure 1, this hair
The telephony interface test device 100 that bright embodiment provides includes：Subscriber interface module 11, master controller 12, impedance setup module
13rd, interface module 14 and detection module 15.
Specifically, as shown in Figure 1, subscriber interface module 11, master controller 12, impedance setup module 13 and interface module 14
It is sequentially connected, detection module 15 is connect respectively with master controller 12 and interface module 14.
Subscriber interface module 11 for receiving the interface parameters of the telephony interface to be tested of user's transmission, and connects described
Mouth parameter is sent to master controller 12；And the detection data that display master controller 12 is sent.
In this implementation, subscriber interface module 11 is by that can receive external data input, handle and export any existing of display
There is technology to realize, such as touch screen or dial switch and display combinations, the embodiment of the present invention is herein without repeating.
Specifically, the telephony interface standard due to country variant/area is different, each country /region is distinguished all in accordance with the standard of oneself
Define the Two-port netwerk impedance network model of standard telephone set；For each different equipment to be tested, commonly used in not
Same country, then each telephony interface just needs to be matched with its identified standard respectively, this connects also for equipment phone
The purpose that mouth is tested.And the interface parameters of phone to be tested can according to externally input design parameter value determining or
Person is more simple, can be determined according to externally input telephony interface type to be tested, interface type herein can divide
Each country /region is not corresponded to, it is only necessary to pre-establish the correspondence between telephony interface type and telephone interface parameter, just
The telephone interface parameter to be tested can be directly determined after externally input interface type selection is received.
Master controller 12, for exporting corresponding the first control for controlling the impedance setup module according to the interface parameters
Signal；And the detection data for sending detection module 15 is sent to subscriber interface module 11.
Wherein, it is exported in order to which master controller to be exported to the control signal to impedance setup module and master controller below to opening
The control signaling zone for closing apparatus module separates, and the control signal that master controller is exported to impedance setup module is known as the first control
The control signal that master controller is exported to switchgear module is known as second control signal by signal.
In the present embodiment, master controller 12 can by micro-control unit (Microcontroller Unit, abbreviation MCU),
Central processing unit (Central Process Unit, abbreviation CPU) or system level chip (System on Chip, abbreviation SOC)
As the core controller of master controller, cooperation Complex Programmable Logic Devices (Complex Programmable Logic
Device, abbreviation CPLD) and memory composition digital processing system.Specifically, master controller selects universal cpu as core
Master controller, user can be by the touch screen input relevant parameters of subscriber interface module 11 to CPU, and CPU is according to input by user
Telephone interface parameter sends control signal and gives rear class impedance setup module；Wherein, the interface prepared in advance is stored in memory
Parameter and the correspondence of control signal, CPU can be answered according to the correspondence of storage according to the direct the output phase of interface parameters
Control signal, with control impedance setup module by the impedance network that telephony interface to be tested is correspondingly connected be set as with it is to be tested
The matched Two-port netwerk impedance network of telephony interface.Memory can be Double Data Rate synchronous DRAM (Double
Data Rate, abbreviation DDR) or FLASH memory.Meanwhile CPU is received by serial/parallel row bus from CPLD logic units
Information, the signal or data that CPLD logic units are responsible for receiving and processing detection module is sent, transmits to CPU, defeated by CPU
Go out to subscriber interface module.It should be noted that in the embodiment of the present invention in master controller the operation principle of each device with it is existing
There is technology identical, the embodiment of the present invention is herein without repeating.
Optionally, the embodiment of the present invention provides an alternative solution, and user interface module does not need to will be externally input
Telephony interface type is converted into telephone interface parameter and issues master controller, but telephony interface type directly is sent to main control
Device.Specifically, when it is externally input be the interface type of telephony interface when, user interface module can be by reception
Externally input interface type is transmitted directly to master controller, and interface type and has been configured in master controller in memory in advance
The correspondence of one control signal, master controller can directly export corresponding first control signal according to interface type.
Impedance setup module 13, including one or more impedance networks, for will be to be measured according to the first control signal
The impedance network that examination telephony interface is correspondingly connected with is set as and the matched Two-port netwerk impedance network of telephony interface to be tested.
In the present embodiment, one or more of impedance setup module impedance network can be pre-configured fixed class
The impedance network of type, the control signal of master controller output directly gate and the matched Two-port netwerk impedance net of telephony interface to be tested
Network；One or more of impedance setup module impedance network can also be set by what resistance and capacitance component formed
It puts to form different types of impedance network, the control signal of master controller output needs first to gate different resistance and capacitance component
Combination, to obtain and the matched Two-port netwerk impedance network of telephony interface to be tested.Specifically, it is provided in impedance setup module
One or more impedance networks, there are one during impedance network, an impedance network corresponds to a kind of for setting in impedance setup module
The standard of telephony interface, an impedance network match connection with a telephony interface.It is provided in impedance setup module multiple
During impedance network, multiple impedance networks can support multiple telephony interfaces, the corresponding telephony interface standard of each impedance network
Can be identical, multiple same phone interfaces can be supported to connect；The corresponding telephony interface standard of each impedance network
Can be not exactly the same, so that the telephony interface of various criterion demand is supported to connect.
Interface module 14, including one or more interfaces, the interface is in test by the resistance in impedance setup module 13
Anti- network is correspondingly connected with telephony interface to be tested.
Specifically, interface module 14 is that the impedance network in impedance setup module is connected to telephony interface to be tested.It is right
For telephony interface test device, the outer connector quantity set by interface section may be set according to actual conditions, can be with
It is more than, equal to or less than the telephony interface number of equipment to be tested；Its interface form is simultaneously not particularly limited, and can be contact pin connection
The various forms such as device, RJ11, it is only necessary to can be formed with the telephony interface of Devices to test and effectively connect.
Detection module 15 for acquiring the detection data of telephony interface to be tested being connect with interface module 14, and will be adopted
The detection data of collection is sent to master controller 12, is shown so that master controller 12 exports detection data to subscriber interface module 11
Show.
In the present embodiment, detection module 15 acquires the detection data of telephony interface to be tested and includes：Acquisition is each to be measured
Try the direct current and AC signal value on telephony interface.A matched Two-port netwerk resistance is connected in the telephony interface being devices under
During anti-network, start test, at this point, equipment to be tested exports corresponding alternating current and direct current signal to telephony interface, detection module is adopted
Collect corresponding direct current and AC signal on telephony interface, and the direct current of acquisition and AC signal value are fed back, so that outside
Portion tester can judge whether the telephony interface performance indicator is qualified according to feedback result.It is specifically external testing personnel
By the direct current of acquisition and AC signal value compared with preset direct current and AC signal value, if the direct current of acquisition and AC signal value
Close or equal to preset direct current and AC signal value, then telephony interface performance indicator qualification is judged.
Specifically, acquiring the direct current of telephony interface to be tested and sample circuit of the prior art may be used in AC signal
To realize.Wherein, one group of sample circuit is used for each interface to be tested, that is to say, that multiple phones to be tested are connect
Mouth sets multigroup identical sample circuit.Optionally, sample circuit can include analog-digital converter (Analog to
Digital Converter, abbreviation A/D converter or ADC), voltage comparator circuit and digital circuit composition, sample circuit difference
Interface 1 in interface module is detected to return via master controller to the direct current of interface n and AC signal situation, and by the data detected
Subscriber interface module is passed to, testing result is shown to user and watched by subscriber interface module.Fig. 2 is provided in an embodiment of the present invention
The structure diagram of multiport DC communication detection circuit, can be with as shown in Fig. 2, multiple single port detection circuits are combined
Obtain multiport detection circuit.
Telephony interface test device provided in an embodiment of the present invention includes the resistance of one or more impedance networks by setting
Anti- setup module to simulate the standard telephone set of country variant and area, will be treated according to the control signal that master controller exports
The impedance network that is correspondingly connected with of test telephony interface be set as with the matched Two-port netwerk impedance network of telephony interface to be tested, so as to
Country variant or the telephone set impedance network model in area can be simulated when testing telephony interface, without plugging phone repeatedly,
Versatility is good, improves the reliability of telephony interface test.Meanwhile the detection of telephony interface to be tested is detected by detection module
Data, and pass through user's interface display module and the detection data is shown to user, without manually checking one by one, detection speed
Soon, the testing efficiency of telephony interface is improved.
Further, on the basis of embodiment shown in Fig. 1, the impedance network includes resistance and capacitance component switchs
Array, the resistance and capacitance component switch arrays are grasped under the control of the first control signal by the switching of switch
Make, the Two-port netwerk impedance network that the telephony interface to be tested is correspondingly connected with is set as matching with the telephony interface to be tested
Two-port netwerk impedance network.
In the present embodiment, impedance setup module includes multiple resistance and capacitance component switch arrays, and according to master control
The switch of different location on the control signal break-make resistance and capacitance component switch arrays that device input processed is come in, so that being formed
The combination of the resistance and capacitance of different resistance values and capacitance is formed various according to the resistance of setting and capacitance member device array
The combination of resistance and capacitance can at least be related to the Two-port netwerk impedance network needed for the telephone interface parameter of equipment to be tested, from
And obtain the matched Two-port netwerk impedance network of test telephony interface institute of user's needs.Specifically, resistance and capacitance component are opened
Multigroup identical resistance and capacitance component can be included by closing array, to support multiple identical telephony interfaces to be tested；Also may be used
To include several resistance values resistance and capacitance different with capacitance, so that outside is selected according to different demands.
Optionally, various resistance that resistance and capacitance member device array formed and capacitance are determined according to external control signal
Combination specifically can be in the following manner：According to needed for the interface parameters determines that the telephony interface to be tested uses standard
Resistance value and capacitance；According to the resistance of required resistance and capacitance to be connected needed for different first control signal gatings
And capacitor combination.Wherein, several first control signals, each first control signal point are exported according to interface parameters master controller
The resistance and/or capacitance of different resistance values and/or capacitance Dui Ying not gated；When determining required resistance value and capacitance
Afterwards, according to resistance value and capacitance corresponding first control signal is exported effectively, so as to gate specific resistance and/or electricity
Hold formed combination.
Optionally, according to interface parameters determine telephony interface to be tested use standard needed for resistance value and capacitance；
Output first control signal corresponding with resistance value and capacitance, including：
It pre-sets and records the corresponding resistance value of each resistance and the corresponding capacitance of each capacitance and each resistance of gating
With the first control signal corresponding to capacitance；
Selection uses the resistance needed for standard with telephony interface to be tested from resistance and capacitance component switch arrays
Value and the matched resistance of capacitance and capacitance；
The corresponding first control letter of resistance and capacitance that output gating is selected from resistance and capacitance component switch arrays
Number.
Specifically, it is specifically as follows according to the resistance and capacitor combination connected needed for required resistance and capacitance gating：
It pre-sets and records the corresponding resistance value of each resistance and the corresponding capacitance of each capacitance and each resistance of gating and capacitance institute
Corresponding first control signal；Required resistance and capacitor combination are determined according to required resistance value and capacitance；That is, from capacitance
With selection resistance value in electric resistance array and the matched resistance of capacitance and capacitance, selected resistance and capacitance are according to reality herein
It may be the case that multiple or one；Export resistance and capacitor combination determined by corresponding first control signal gating.
Optionally, resistance and capacitance component switch arrays include multiple resistance of different resistance values and capacitance and more
A capacitance selects to be made with telephony interface to be measured using the minimum principle of device number from resistance and capacitance component switch arrays
With the resistance value needed for standard and the matched resistance of capacitance and capacitance.
Specifically, in selection resistance and capacitive process, due to that may include that there are different electricity in resistance and capacitor array
The multiple resistance and multiple capacitances of resistance value and capacitance, it is preferably minimum according to device number when determining resistance and capacitor combination
Principle selects, and to reduce the output of control signal, avoids excessively controlling the issuable interference of signal；Such as parallel resistance battle array
There are the resistance of 2 200 Ω, 3 300 Ω in row, when the resistance value for intentionally getting 100 Ω before 2 200 Ω resistance of selection connection
Switch rather than connection 3 300 Ω resistance before switch, other are similarly.
Further, impedance setup module further includes decoder；The decoder is used for the first control signal solution
Code is into corresponding switch control signal, to correspond to resistance value and corresponding electricity in resistance described in break-make and capacitance component switch arrays
The resistance and capacitance component switch arrays are set as resistance corresponding with the interface parameters and capacitance by the switch of capacitance
Combination, obtains and the matched Two-port netwerk impedance network of telephony interface to be tested.
Specifically, impedance setup module can also include the decoder being made of chips such as MCU/CPLD/FPGA, decoder
The control signal that master controller is passed to is decoded into specific switch control signal, each switch control signal correspond to resistance and
A switch in capacitance component switch arrays, to realize different location on break-make resistance and capacitance component switch arrays
Switch.
Telephony interface test device provided in an embodiment of the present invention, by setting resistance and capacitance in impedance setup module
Component switch arrays are operated by the switching switched in resistance and capacitance component switch arrays, can at least be corresponded to
The combination of the resistance and capacitance of a kind of telephonic standards, so as to obtain the matched Two-port netwerk resistance of the test telephony interface of user's needs institute
Anti- network.Meanwhile by setting decoder in impedance setup module, the control signal that master controller exports can be decoded as
Switch control signal realizes the switch of different location on break-make resistance and capacitance component switch arrays.
For example, Fig. 3 is the circuit diagram of single port impedance network provided in an embodiment of the present invention, as shown in figure 3, with 6
For a resistance and 3 capacitor array circuits, each resistance and capacitance can respectively be selected according to first control signal.Specifically
, each impedance network part is made of resistance R1-R6, capacitance C1-C3 and switch k1-k11, wherein, resistance value and capacitance
Can be as shown in table 1, specifically it is shown in Table 1.
| Resistance | Resistance value | Capacitance | Capacitance |
| R1 | 600Ω | C1 | 310nF |
| R2 | 220Ω | C2 | 30nF |
| R3 | 370Ω | C3 | 120nF |
| R4 | 620Ω | ||
| R5 | 820Ω | ||
| R6 | 900Ω |
Table 1
The combination of different switches, which is opened or closed, can obtain different impedance networks between AB points, so as to reach impedance setting
Purpose；The telephony interface Two-port netwerk impedance network model for meeting various criterion is specifically shown in Table 2, and wherein "○", which represents, is closed,
"×", which represents, to be disconnected, it should be noted that is to correspond to a resistance or one with a first control signal in this diagram
For the gating of a capacitance, but it is not limited to this, can also be used in the case of fixed Two-port netwerk impedance network model
One first control signal gates all resistance and/or capacitance corresponding to some Two-port netwerk impedance network simultaneously.
Table 2
If matching the Two-port netwerk impedance network model of more countries, can increase according to Fig. 3 more
In the resistance of resistance value and capacitance, capacitance and digital switch to array circuit, the embodiment of the present invention herein without limit and
It repeats.
The embodiment of the present invention can obtain multiport impedance network circuit by following two realization methods：
One kind is that above-mentioned single port impedance network circuit combines to obtain multiport impedance network circuit.Fig. 4
For the structure diagram of multiport impedance network provided in an embodiment of the present invention, controlled as shown in figure 4, master controller exports n groups
Signal is decoded into specific n groups switch control signal by decoder, and each group of switch control signal corresponds to a single port resistance
Anti- lattice network.Single port impedance network circuit and single port impedance network electricity in above-mentioned embodiment illustrated in fig. 3 in the present embodiment
The realization principle on road is identical with effect is realized, the embodiment of the present invention is herein without repeating.
One kind is by the way that switchgear module is set to obtain multiport impedance network circuit.Fig. 5 is the embodiment of the present invention two
The structure diagram of the telephony interface test device of offer, as shown in figure 5, on the basis of embodiment shown in Fig. 1, telephony interface
Test device further includes：Switchgear module 16；The input terminal of switchgear module 16 is defeated with impedance setup module 13 respectively
Outlet is connected with the signal output end of master controller 12, and the output terminal of switchgear module 16 is used to connect with interface module 14；
Switchgear module 16 for the second control signal exported according to the master controller, passes through the interface mould
Impedance network in the impedance setup module is matched and is connected to each telephony interface to be tested by block respectively.
Specifically, when the impedance network in impedance setup module is single port impedance network, and be devices under multiple
It, can be according to the second control signal of master controller output, by the single port by setting switchgear module during telephony interface
Impedance network matches each telephony interface being connected in equipment to be tested respectively, is surveyed automatically so as to fulfill to multiple telephony interfaces
Examination is intervened without external staff.
The master controller is additionally operable to：When the quantity of the telephony interface to be tested is less than or equal to of matching impedance network
During number, the second control signal is exported, to control the switchgear module that each telephony interface to be tested is right respectively
A matched Two-port netwerk impedance network should be connected；
When the quantity of the telephony interface to be tested is more than the number of matching impedance network, output the second control letter
Number, the switchgear module to be controlled to be connected respectively each telephony interface to be tested according to preset strategy sequence
One matched Two-port netwerk impedance network.
In the present embodiment, the port number of telephony interface to be tested in equipment to be tested is previously provided in master controller,
And it is previously provided with the quantity of effective resistance that impedance setup module can be formed and capacitance component switch arrays.By impedance
Network matches respectively when being connected to each telephony interface to be tested, and master controller first judges the quantity of the telephony interface to be tested
Whether the quantity of effective resistance and capacitance component switch arrays, an effective resistance and capacitance component switch arrays are less than or equal to
Row can be correspondingly formed an impedance network；If the quantity of telephony interface to be tested and effective resistance and capacitance member device can be formed
Part switch arrays quantity just matches or less than the quantity that can form effective resistance and capacitance component switch arrays, then often
A interface to be tested Two-port netwerk impedance network that one matched resistance of corresponding connection and capacitor combination are formed respectively, utilizes the company
Logical Two-port netwerk impedance network tests telephony interface to be tested；If the quantity of telephony interface to be tested is more than and can be formed
The quantity of effective resistance and capacitance component switch arrays, then according to advance strategy sequence to each telephony interface to be tested into
Row sequential testing.Wherein, it can carry out telephony interface to be tested by preset any sequence to be according to advance strategy sequence
Test, for example can be sequence according to telephony interface number to be tested or be position according to telephony interface to be tested
Sequentially.
Test is carried out to each telephony interface to be tested according to advance strategy sequence to specifically include：
Quantity according to could be formed with effect resistance and capacitor array determines that current test group can test telephony interface quantity；
Each can currently test telephony interface and connect an effective resistance and capacitor combination, to current connected electricity
Words interface is tested；
After the performance parameter for having acquired the current connection telephony interface, the telephony interface of the test is recorded to have tested shape
State disconnects the connection with resistance and capacitor array；And pass through second control signal and control the resistance and capacitor array and next group
Telephony interface to be tested forms connection, and to next group, telephony interface sequence to be tested is tested, until all telephony interfaces
It is tested to complete.
In said sequence test process, during if off resistance and capacitor array, needed there is no telephony interface tested
Whether the gating signal of examination, the resistance and capacitor array is set in vain, and have telephony interface to also need to be tested and can lead to
Cross following manner judgement：
Master controller obtains each telephony interface to be tested and a respective identification (for example, interface number) record in advance, and is in
The call status interface of non-test mode is state to be tested；
After telephony interface performance parameter is completed to acquire, the call status interface is identified as test mode；
When the state of all telephony interfaces is test mode, show that no telephony interface needs to test, otherwise, explanation
It also needs to test telephony interface of the state for state to be tested, according to the telephony interface of predetermined policy selection respective identification
It is tested.
Further, Fig. 6 is the circuit diagram of switchgear module provided in an embodiment of the present invention, as shown in fig. 6, the resistance
Anti- setup module includes a Two-port netwerk impedance network；The switchgear module includes at least two switching groups, each is opened
Pass group includes two switches, and two switches are connect respectively with two ports of the Two-port netwerk impedance model, each switching group
One second control signal of corresponding master controller output.
It should be noted that Fig. 6 only has 4 telephony interfaces with equipment to be tested, switchgear module has 4 way switch electricity
It is illustrated for road, but the switching circuit quantity of switchgear module is not limited to that, the switch of multiple switch circuit composition
The realization principle of apparatus module and switchgear module that 4 path switching circuit shown in fig. 6 forms and realize that effect is similar；Specifically
Switching circuit quantity can be set according to the telephony interface number of equipment to be tested, can also according to decoder export switch control
Signal number setting processed, the embodiment of the present invention is herein without limiting and repeating.
Specifically, 4 groups of control signals control 8 in switching device circuit to switch respectively, each switch is placed on input
Between port and corresponding output power port, control signal 1, the control closing of signal 2~4 are enabled when detect the 1st interface；Detection
Enabled during the 2nd interface control signal 2, control signal 1,3,4 close, and so on until all telephony interfaces detection finish,
This process can be by procedure auto-control, without external manual intervention.
For the embodiment of the present invention by setting switchgear module, the switching circuit inside switchgear module can be according to master
The connection relation of control signal switching input and output port that controller is sent out, achievees the purpose that automatic test, so as to save
Human-saving exempts manually-operated process.
Further, above-mentioned switchgear module can also be an individual switching device.Fig. 7 is the embodiment of the present invention
The structure diagram of the telephony interface test system of offer, as shown in fig. 7, in telephony interface detection device and equipment to be tested
Between add in a controllable line switching device, this switching device has 1 input port and 4 output ports, above-mentioned impedance
Match and detection device can control above-mentioned circuit to open respectively by control signal in 4 tunnels of output in " master controller and subscriber interface module "
Control device is closed, is first turned on the switch of the first via, first telephony interface of equipment to be tested is detected, is closed after detection is qualified
First way control switch, open the second way control switch detect second telephony interface, and so on until all phone ports examine
Survey finishes.Switching circuit inside switching device can be defeated according to the switch control signal switching that telephony interface detection device is sent out
Enter with the connection relation of output port so as to achieve the purpose that automatic test.In the present embodiment the realization principle of switching device and
It realizes the realization principle of effect and switchgear module in embodiment illustrated in fig. 6 and realizes that effect is identical, the embodiment of the present invention exists
This is repeated no more.Be achieved in the telephony interface to be tested quantity be more than matching impedance network number when test
Journey.
The embodiment of the present invention also provides a kind of telephony interface test method, and Fig. 8 connects for phone provided in an embodiment of the present invention
The flow chart of mouth test method, as shown in figure 8, telephony interface test method specifically includes following steps：
Step 801, the interface parameters for obtaining telephony interface to be tested.
Step 802 exports corresponding first control signal according to interface parameters, and telephony interface to be tested is correspondingly connected with
Impedance network is set as and the matched Two-port netwerk impedance network of telephony interface to be tested.
The detection data of step 803, acquisition telephony interface to be tested.
The executive agent of telephony interface test method provided in the present embodiment is telephony interface test dress shown in FIG. 1
It puts, realization principle is similar with effect is realized, details are not described herein.
Further, on the basis of the technical solution of above-described embodiment, the impedance network includes resistance and capacitance member
Devices switch array, the impedance network that the telephony interface to be tested is correspondingly connected with are set as and the phone to be tested
The Two-port netwerk impedance network of Interface Matching, including：
The resistance and capacitance component switch arrays under the control of the first control signal, by switch it is logical,
Disconnected operation, the Two-port netwerk impedance network that the telephony interface to be tested is correspondingly connected with is set as and the telephony interface to be tested
Matched Two-port netwerk impedance network.
Further, on the basis of the technical solution of above-described embodiment, described exported according to the interface parameters corresponds to
First control signal, including：
According to the interface parameters determine the telephony interface to be measured use standard needed for resistance value and capacitance；
Output first control signal corresponding with the resistance value and the capacitance；
The impedance network that the telephony interface to be tested is correspondingly connected with is set as and the telephony interface to be tested
Matched Two-port netwerk impedance network, including：
According to corresponding to resistance value and right in resistance described in the first control signal break-make and capacitance component switch arrays
Answer the switch of capacitance, by the resistance and capacitance component switch arrays be set as resistance corresponding with the interface parameters and
Capacitor combination obtains and the matched Two-port netwerk impedance network of telephony interface to be measured.
Further, it is described according to determining the interface parameters on the basis of the technical solution of above-described embodiment
Telephony interface to be measured uses the resistance value and capacitance needed for standard；Output is corresponding with the resistance value and the capacitance
First control signal, including：
Pre-set and record the corresponding resistance value of each resistance and the corresponding capacitance of each capacitance and gate each electricity
First control signal corresponding to resistance and capacitance；
Selection uses standard institute with the telephony interface to be tested from the resistance and capacitance component switch arrays
The matched resistance of resistance value and capacitance and capacitance needed；
Corresponding first control of resistance and capacitance that output gating is selected from the resistance and capacitance component switch arrays
Signal processed.
Further, on the basis of the technical solution of above-described embodiment, the resistance and capacitance component switch arrays
Include multiple resistance of different resistance values and capacitance and multiple capacitances, using the minimum principle of device number from the resistance and
Selection uses resistance value needed for standard and capacitance to match with the telephony interface to be measured in capacitance component switch arrays
Resistance and capacitance.Further, on the basis of the technical solution of above-described embodiment, telephony interface test method further includes：
When the quantity of the telephony interface to be tested is less than or equal to the number of matching impedance network, output the second control letter
Number, each telephony interface to be tested is connected respectively a matched Two-port netwerk impedance network；
When the quantity of the telephony interface to be tested is more than the number of matching impedance network, second control signal is exported,
Each telephony interface to be tested is connected a matched Two-port netwerk impedance network respectively according to preset strategy sequence.
Further, on the basis of the technical solution of above-described embodiment, if the number of the telephony interface to be tested
Each telephony interface to be tested is then connected one by amount respectively more than the number of matching impedance network according to preset strategy sequence
A matched Two-port netwerk impedance network, including：
The test quantity of test telephony interface in current test group is determined according to the number of matching impedance network；Wherein, institute
State the number that test quantity is less than or equal to matching impedance network；
The telephony interface to be tested of the test quantity is chosen as current test group according to the preset strategy sequence
In test telephony interface；
Each test telephony interface in current test group is connected respectively a matched Two-port netwerk impedance network；
In the current test group has been acquired after the detection data of all test telephony interfaces, the current test is recorded
Each test telephony interface is test mode in group, and the telephony interface of test mode is controlled to disconnect and Two-port netwerk impedance net
The connection of network；And control Two-port netwerk impedance network is formed with next group of telephony interface to be tested and is connected, it is to be tested to next group
Each telephony interface to be tested in telephony interface is tested according to preset strategy sequence, until all electricity to be tested
Words interface is tested completion.
Further, on the basis of the technical solution of above-described embodiment, described record in the current test group is owned
Telephony interface is tested as test mode, including：
Each telephony interface to be tested and respective identification record are obtained in advance, and the call status interface do not tested is to be measured
Examination state；
After the detection data of all test telephony interfaces in the current test group has been acquired, the current test is identified
Each test call status interface is test mode in group；
Each telephony interface to be tested in next group of telephony interface to be tested is carried out according to preset strategy sequence
Test, until all telephony interfaces to be tested are tested completion, including：
When the state of all telephony interfaces is test mode, then all telephony interfaces to be tested have been tested
Into stopping test；Otherwise, telephony interface of the state for state to be tested is tested, according to the preset strategy sequence
State telephony interface to be tested is selected to be tested.Further, it is described to adopt on the basis of the technical solution of above-described embodiment
Collect the detection data of the telephony interface to be tested, including：The direct current of the telephony interface to be tested and AC signal value are acquired,
And show the direct current and AC signal value.
Although disclosed herein embodiment as above, the content only for ease of understanding the present invention and use
Embodiment is not limited to the present invention.Technical staff in any fields of the present invention is taken off not departing from the present invention
Under the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (15)
1. a kind of telephony interface test device, which is characterized in that including：Subscriber interface module, master controller, impedance setting mould
Block, interface module and detection module, wherein：
The subscriber interface module, for receiving the interface parameters of the telephony interface to be tested of user's transmission, and by the interface
Parameter is sent to the master controller；And show the detection data that the master controller is sent；
The master controller is believed for exporting corresponding the first control for controlling the impedance setup module according to the interface parameters
Number and, the detection data that the detection module is sent is sent to the subscriber interface module；
The impedance setup module, including one or more impedance networks, for being treated according to the first control signal by described
The impedance network that test telephony interface is correspondingly connected with is set as and the matched Two-port netwerk impedance network of telephony interface to be tested；
The interface module, including one or more interfaces, the interface is in test by the resistance in the impedance setup module
Anti- network is correspondingly connected with the telephony interface to be tested；
The detection module, for acquiring the detection data of the telephony interface to be tested being connect with the interface module, and
The detection data of acquisition is sent to the master controller.
2. telephony interface test device according to claim 1, which is characterized in that the impedance network includes resistance and electricity
Hold component switch arrays, the resistance and capacitance component switch arrays pass through under the control of the first control signal
Switch switching operation, by the Two-port netwerk impedance network that the telephony interface to be tested is correspondingly connected be set as with it is described to be measured
Try the matched Two-port netwerk impedance network of telephony interface.
3. telephony interface test device according to claim 2, which is characterized in that the impedance setup module, which further includes, translates
Code device；
The decoder is used to the first control signal being decoded into corresponding switch control signal, with resistance described in break-make and
The switch of resistance value and corresponding capacitance is corresponded in capacitance component switch arrays, by the resistance and capacitance component switch arrays
Row are set as resistance corresponding with the interface parameters and capacitor combination, obtain and matched two end of telephony interface to be tested
Mouth impedance network.
4. according to claim 1-3 any one of them telephony interface test devices, which is characterized in that the telephony interface test
Device further includes：Switchgear module；
The input terminal of the switchgear module respectively with the output terminal of the impedance setup module and the letter of the master controller
The connection of number output terminal, the output terminal of the switchgear module with the interface module for connecting；
The switchgear module for the second control signal exported according to the master controller, passes through the interface module
Impedance network in the impedance setup module is matched respectively and is connected to each telephony interface to be tested.
5. telephony interface test device according to claim 4, which is characterized in that the impedance setup module includes one
Two-port netwerk impedance network；The switchgear module includes at least two switching groups, each switching group includes two and switchs, and two
A switch is connect respectively with two ports of the Two-port netwerk impedance model, each switching group corresponds to the one of master controller output
A second control signal.
6. telephony interface test device according to claim 4, which is characterized in that the main controller module is additionally operable to：
When the quantity of the telephony interface to be tested is less than or equal to the number of matching impedance network, output the second control letter
Number, it is hindered with controlling the switchgear module that each telephony interface to be tested is connected respectively a matched Two-port netwerk
Anti- network；
When the quantity of the telephony interface to be tested is more than the number of matching impedance network, the second control signal is exported,
To control the switchgear module that each telephony interface to be tested is connected respectively one according to preset strategy sequence
A matched Two-port netwerk impedance network.
7. a kind of telephony interface test method, including：
Obtain the interface parameters of telephony interface to be tested；
Corresponding first control signal, the impedance that the telephony interface to be tested is correspondingly connected with are exported according to the interface parameters
Network settings be and the matched Two-port netwerk impedance network of telephony interface to be tested；
Acquire the detection data of the telephony interface to be tested.
8. telephony interface test method according to claim 7, it is characterised in that：
The impedance network includes resistance and capacitance component switch arrays, described to be correspondingly connected with the telephony interface to be tested
Impedance network be set as with the matched Two-port netwerk impedance network of telephony interface to be tested, including：
The resistance and capacitance component switch arrays are grasped under the control of the first control signal by the switching of switch
Make, the Two-port netwerk impedance network that the telephony interface to be tested is correspondingly connected with is set as matching with the telephony interface to be tested
Two-port netwerk impedance network.
9. telephony interface test method according to claim 8, it is characterised in that：
It is described that corresponding first control signal is exported according to the interface parameters, including：
According to the interface parameters determine the telephony interface to be measured use standard needed for resistance value and capacitance；
Output first control signal corresponding with the resistance value and the capacitance；
The impedance network that the telephony interface to be tested is correspondingly connected with is set as matching with the telephony interface to be tested
Two-port netwerk impedance network, including：
According to being corresponded in resistance described in the first control signal break-make and capacitance component switch arrays, resistance value and correspondence are electric
The resistance and capacitance component switch arrays are set as resistance corresponding with the interface parameters and capacitance by the switch of capacitance
Combination, obtains and the matched Two-port netwerk impedance network of telephony interface to be measured.
10. telephony interface test method according to claim 9, it is characterised in that：
It is described according to the interface parameters determine the telephony interface to be measured use standard needed for resistance value and capacitance；It is defeated
Go out first control signal corresponding with the resistance value and the capacitance, including：
Pre-set and record the corresponding resistance value of each resistance and the corresponding capacitance of each capacitance and gate each resistance and
First control signal corresponding to capacitance；
Selection is used with the telephony interface to be tested needed for standard from the resistance and capacitance component switch arrays
Resistance value and the matched resistance of capacitance and capacitance；
The corresponding first control letter of resistance and capacitance that output gating is selected from the resistance and capacitance component switch arrays
Number.
11. telephony interface test method according to claim 10, it is characterised in that：
The resistance and capacitance component switch arrays include multiple resistance of different resistance values and capacitance and multiple capacitances,
It is selected and the telephony interface institute to be measured from the resistance and capacitance component switch arrays using the minimum principle of device number
Use the resistance value needed for standard and the matched resistance of capacitance and capacitance.
12. according to claim 7-11 any one of them telephony interface test methods, which is characterized in that the method is also wrapped
It includes：
When the quantity of the telephony interface to be tested is less than or equal to the number of matching impedance network, second control signal is exported,
Each telephony interface to be tested is connected respectively a matched Two-port netwerk impedance network；
When the telephony interface to be tested quantity be more than matching impedance network number, then second control signal is exported, to press
Each telephony interface to be tested is connected into a matched Two-port netwerk impedance network respectively according to preset strategy sequence.
13. telephony interface test method according to claim 12, it is characterised in that：
If the quantity of the telephony interface to be tested is more than the number of matching impedance network, according to preset strategy sequence
Each telephony interface to be tested is connected into a matched Two-port netwerk impedance network respectively, including：
The test quantity of test telephony interface in current test group is determined according to the number of matching impedance network；Wherein, the survey
Try the number that quantity is less than or equal to matching impedance network；
The telephony interface to be tested of the test quantity is chosen as in current test group according to the preset strategy sequence
Test telephony interface；
Each test telephony interface in current test group is connected respectively a matched Two-port netwerk impedance network；
In the current test group has been acquired after the detection data of all test telephony interfaces, record in the current test group
Each test telephony interface is test mode, and the telephony interface of test mode is controlled to disconnect and Two-port netwerk impedance network
Connection；And control Two-port netwerk impedance network is formed with next group of telephony interface to be tested and is connected, to next group of phone to be tested
Each telephony interface to be tested in interface is tested according to preset strategy sequence, until all phones to be tested connect
Mouth is tested to be completed.
14. telephony interface test method according to claim 13, it is characterised in that：
It is described that record all test telephony interfaces in the current test group be test mode, including：
Each telephony interface to be tested and respective identification record are obtained in advance, and the call status interface do not tested is shape to be tested
State；
After the detection data of all test telephony interfaces in the current test group has been acquired, identify in the current test group
Each test call status interface is test mode；
Each telephony interface to be tested in next group of telephony interface to be tested is tested according to preset strategy sequence,
Until all telephony interfaces to be tested are tested completion, including：
When the state of all telephony interfaces is test mode, then all telephony interfaces to be tested are tested completion, stop
Only test；Otherwise, telephony interface of the state for state to be tested is tested, is treated according to the preset tactful sequential selection
Test mode telephony interface is tested.
15. according to claim 7-11 any one of them telephony interface test methods, the acquisition phone to be tested connects
The detection data of mouth, including：
The direct current of the telephony interface to be tested and AC signal value are acquired, and shows the direct current and AC signal value.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917920A (en) * | 2020-08-12 | 2020-11-10 | 上海剑桥科技股份有限公司 | Intelligent loop holding device |
| CN112345854A (en) * | 2020-10-30 | 2021-02-09 | 北京航天光华电子技术有限公司 | Two-port component measurement and test system between any two points |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0155571A2 (en) * | 1984-03-17 | 1985-09-25 | Neumann Elektronik GmbH | Device for optimally matching a hybrid circuit with a telecommunication line |
| US4581494A (en) * | 1984-10-09 | 1986-04-08 | James A. Mayberry | Telephone interface-test device |
| US6331785B1 (en) * | 2000-01-26 | 2001-12-18 | Cirrus Logic, Inc. | Polling to determine optimal impedance |
| CN1489306A (en) * | 2002-10-10 | 2004-04-14 | 华为技术有限公司 | Measuring device |
| CN101349984A (en) * | 2007-07-17 | 2009-01-21 | 鸿富锦精密工业（深圳）有限公司 | Device for testing video graphics interface |
| CN101521492A (en) * | 2008-02-29 | 2009-09-02 | 瑞昱半导体股份有限公司 | Impedance matching circuit and related method thereof |
| CN102006028A (en) * | 2010-11-15 | 2011-04-06 | 中兴通讯股份有限公司 | Impedance matching method and circuit |
| CN201797559U (en) * | 2010-09-03 | 2011-04-13 | 深圳创维数字技术股份有限公司 | Set-top box capable of automatically switching audio interface and video interface |
| CN102435914A (en) * | 2011-10-18 | 2012-05-02 | 中国民航大学 | Portable aircraft wire comprehensive performance tester |
| CN102830300A (en) * | 2012-08-06 | 2012-12-19 | 大唐微电子技术有限公司 | Testing system and method for realizing non-contact type intelligent card chip |
| CN103002473A (en) * | 2012-11-27 | 2013-03-27 | 上海创远仪器技术股份有限公司 | Method, device and system for testing wireless terminal |
| CN103337717A (en) * | 2013-06-25 | 2013-10-02 | 华为技术有限公司 | Antenna impedance matching device, semi-conductor chip and antenna impedance matching method |
| CN103592542A (en) * | 2013-11-07 | 2014-02-19 | 中国电子科技集团公司第四十一研究所 | Signal analysis interface intelligent matching method based on switching matrix |
| CN103983856A (en) * | 2014-05-09 | 2014-08-13 | 京东方科技集团股份有限公司 | Automatic detection equipment and method of low voltage differential signal interface matched resistor |
| CN104515949A (en) * | 2014-12-26 | 2015-04-15 | 北京航天测控技术有限公司 | General adaptive assembly for interface and signal path planning method based on adaptive assembly |
| CN106571841A (en) * | 2016-10-28 | 2017-04-19 | 宇龙计算机通信科技(深圳)有限公司 | Radio frequency matching system and method of realizing radio frequency matching automation |
-
2017
- 2017-12-01 CN CN201711257981.8A patent/CN108152646B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0155571A2 (en) * | 1984-03-17 | 1985-09-25 | Neumann Elektronik GmbH | Device for optimally matching a hybrid circuit with a telecommunication line |
| US4581494A (en) * | 1984-10-09 | 1986-04-08 | James A. Mayberry | Telephone interface-test device |
| US6331785B1 (en) * | 2000-01-26 | 2001-12-18 | Cirrus Logic, Inc. | Polling to determine optimal impedance |
| CN1489306A (en) * | 2002-10-10 | 2004-04-14 | 华为技术有限公司 | Measuring device |
| CN101349984A (en) * | 2007-07-17 | 2009-01-21 | 鸿富锦精密工业（深圳）有限公司 | Device for testing video graphics interface |
| CN101521492A (en) * | 2008-02-29 | 2009-09-02 | 瑞昱半导体股份有限公司 | Impedance matching circuit and related method thereof |
| CN201797559U (en) * | 2010-09-03 | 2011-04-13 | 深圳创维数字技术股份有限公司 | Set-top box capable of automatically switching audio interface and video interface |
| CN102006028A (en) * | 2010-11-15 | 2011-04-06 | 中兴通讯股份有限公司 | Impedance matching method and circuit |
| CN102435914A (en) * | 2011-10-18 | 2012-05-02 | 中国民航大学 | Portable aircraft wire comprehensive performance tester |
| CN102830300A (en) * | 2012-08-06 | 2012-12-19 | 大唐微电子技术有限公司 | Testing system and method for realizing non-contact type intelligent card chip |
| CN103002473A (en) * | 2012-11-27 | 2013-03-27 | 上海创远仪器技术股份有限公司 | Method, device and system for testing wireless terminal |
| CN103337717A (en) * | 2013-06-25 | 2013-10-02 | 华为技术有限公司 | Antenna impedance matching device, semi-conductor chip and antenna impedance matching method |
| CN103592542A (en) * | 2013-11-07 | 2014-02-19 | 中国电子科技集团公司第四十一研究所 | Signal analysis interface intelligent matching method based on switching matrix |
| CN103983856A (en) * | 2014-05-09 | 2014-08-13 | 京东方科技集团股份有限公司 | Automatic detection equipment and method of low voltage differential signal interface matched resistor |
| CN104515949A (en) * | 2014-12-26 | 2015-04-15 | 北京航天测控技术有限公司 | General adaptive assembly for interface and signal path planning method based on adaptive assembly |
| CN106571841A (en) * | 2016-10-28 | 2017-04-19 | 宇龙计算机通信科技(深圳)有限公司 | Radio frequency matching system and method of realizing radio frequency matching automation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917920A (en) * | 2020-08-12 | 2020-11-10 | 上海剑桥科技股份有限公司 | Intelligent loop holding device |
| CN111917920B (en) * | 2020-08-12 | 2022-02-08 | 上海剑桥科技股份有限公司 | Intelligent loop holding device |
| CN112345854A (en) * | 2020-10-30 | 2021-02-09 | 北京航天光华电子技术有限公司 | Two-port component measurement and test system between any two points |
| CN112345854B (en) * | 2020-10-30 | 2024-05-03 | 北京航天光华电子技术有限公司 | Two-port component measurement test system between any two points |
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|---|---|
| CN108152646B (en) | 2020-10-23 |
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