CN101552709B - Master and slave test groove collision detection method and circuit - Google Patents
Master and slave test groove collision detection method and circuit Download PDFInfo
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- CN101552709B CN101552709B CN2008100906364A CN200810090636A CN101552709B CN 101552709 B CN101552709 B CN 101552709B CN 2008100906364 A CN2008100906364 A CN 2008100906364A CN 200810090636 A CN200810090636 A CN 200810090636A CN 101552709 B CN101552709 B CN 101552709B
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Abstract
The invention relates to a master and slave test groove collision detection method and a circuit, wherein the circuit comprises a voltage dividing circuit unit in a veneer on a master or a slave test groove, the voltage dividing circuit unit detects the veneer on-line, the voltage dividing node of the voltage dividing circuit unit is directly connected with an input end of a veneer collision detection unit through a veneer separation buffer, and is connected with an input end of an opposite veneer collision detection unit through an opposite separation buffer in a backboard wiring way; and thecollision detection units are voltage comparison circuits with two input ends. The method comprises the following steps: detecting the veneer on-line by utilizing the voltage dividing circuit unit, p erforming the logic judgment by the collision detection units, and indicating by an indication device. The method and the device can save the number of pins of a connector, and protect a judgment logic circuit and can provide the collision indication for a tester with very visual and striking mode, thereby leading the tester to know whether the collision of the master test groove and the slave test groove occurs or not at first time, and eliminating the collision before starting the test.
Description
Technical field
The present invention relates to testing equipment, be specifically related to a kind of active and standby test groove collision detection method and circuit.
Background technology
Along with the development of social economy and culture, the communication of the various personalizations of people need get more and more, in order to satisfy the new communication need that people constantly occur; Current communication system becomes and becomes increasingly complex; Each veneer of forming communication system also becomes and becomes increasingly complex, and each communication apparatus manufacturer adopts modularized design in a large number in order to adapt to this market demand; Use a plurality of standalone modules to come the phenomenon of constructing function veneer very many; Particularly the use of module is more and more general, and manufacturer can make up the function veneer of difference in functionality, the very fast response market demand according to the various combination of module.In the production process of various modules; Test is the important step that guarantees their quality, and in test, testing equipment is the requisite device of test; Testing equipment maintenance times in use is the very important index of testing equipment performance; And the damage of testing equipment back panel connector is a modal problem in safeguarding, in order to reduce the maintenance times of testing equipment, in the exploitation of testing equipment; Usually have the maintenance times that a kind of mode that the spareslots position is set reduces testing equipment on the testing backboard of testing equipment; In order to reduce the system complexity of testing equipment, main with on test groove and the subsequent use test groove veneer to be tested can not being arranged simultaneously in the testing equipment, otherwise test result can be made mistakes.Test the situation of makeing mistakes for fear of on active and standby test groove, being inserted with veneer to be tested simultaneously, active and standby test groove collision detection function will be very necessary, and the present invention has solved this problem well.In communication product; It is very many to relate to the relevant patent of active and standby usefulness; These patents all have a common characteristic to realize that exactly active and standby plate works online simultaneously; And realize the switch function between primary and backup plate, their innovative point is mainly solving in the masterslave switchover process, how to guarantee system's normal and stable ground work, solves in the masterslave switchover process because a variety of causes causes the problem that system can not normal and stable work.And requirement is can only a veneer to be tested on the throne in proper testing.Wherein similar with present patent application patent has two; One is that publication number is " a kind of main and standby boards on-line detection method and the circuit " of CN1992649A, and one is that publication number is " a kind of hardware implement device of active and standby working method " of CN2398775Y, and these two patents also can realize the detection to active and standby test groove conflict; Two pull-up resistors of previous patent and a ground signalling realize online detection; Need to use three pins of connector, this method is inapplicable when connector pin quantity is fewer, and accompanying drawing 1 is the execution mode circuit diagram of this patent; The patent in back adopts a pull-up resistor and a ground signalling to realize online detection; But detection signal directly gets into the decision logic circuit, is unfavorable for protecting the decision logic circuit of back, and accompanying drawing 2 is the execution mode circuit diagram of this patent.And these two inventions indicating circuit that all do not conflict.
Summary of the invention
The technical issues that need to address of the present invention are how a kind of active and standby test groove collision detection method and circuit are provided, and need not use three pins and can protect the decision logic circuit in this collision detection circuit, and conflict indication intuitively further can also be provided.
Above-mentioned first technical problem of the present invention solves like this, and a kind of active and standby test groove collision detection circuit is provided, and comprises main or be equipped with detecting the online bleeder circuit unit of this plate on the test groove in the veneer; The dividing potential drop node of this bleeder circuit unit directly connects this plate collision detection unit one input through this plate isolation buffers, and connects the other side's plate collision detection unit one input through backboard wiring through the other side's plate isolation buffers; Said collision detection unit is the voltage comparator circuit with two inputs.
According to testing circuit provided by the invention, said voltage comparator circuit is a logic judging circuit.
According to testing circuit provided by the invention, it is the complex programmable logic device (CPLD) of customization that said logic judging circuit includes, but are not limited to.
According to testing circuit provided by the invention, this testing circuit also is included in main or is equipped with this plate conflict indicating member that is connected with this plate collision detection unit in the veneer on the test groove.
According to testing circuit provided by the invention, said conflict indicating member includes, but are not limited to indicator light and driving thereof.
Above-mentioned another technical problem of the present invention solves like this, and a kind of active and standby test groove collision detection method is provided, and utilizes bleeder circuit unit and collision detection unit, may further comprise the steps:
6.1) utilize this plate bleeder circuit unit detection this plate presence and offer the other side's plate through the backboard line;
6.2) this plate collision detection unit knows and detect the control that whether conflicts according to the presence of this plate and the other side's plate through this plate isolation buffers.
According to detection method provided by the invention, this detection method comprises that also said collision detection unit indicates according to the corresponding conflict of testing result control indicating device.
According to detection method provided by the invention, said conflict indicating device includes, but are not limited to indicator light and driving thereof.
A kind of active and standby test groove collision detection method provided by the invention and circuit; With simple circuit; Realized in the testing equipment of communication product; Active and standby test groove occurs and insert veneer to be tested simultaneously and produce the detection and the deixis of conflict, this invention can give the tester with the conflict indication with very directly perceived and eye-catching mode, thereby makes the tester know whether have active and standby test groove conflict to take place in the very first time; Before beginning test, just this conflict is eliminated, that while the present invention realizes is very convenient, the realization cost is also very cheap.
Description of drawings
Further the present invention is elaborated below in conjunction with accompanying drawing and specific embodiment.
Fig. 1 is the execution mode circuit diagram of CN1992649A patent for publication number;
Fig. 2 is the execution mode circuit diagram of CN2398775Y patent for publication number;
Fig. 3 is the logic diagram of circuit of the present invention;
Fig. 4 is an execution mode circuit diagram of the present invention.
Embodiment
At first, thinking of the present invention is described:
Active and standby test groove collision detection and indicating means that the present invention proposes may further comprise the steps:
1. on this test groove veneer, the other side's test groove veneer, being separately positioned on line states detects;
2. this test groove veneer receives the presence information of the other side's test groove veneer;
3. this test groove veneer provides the presence information of this test groove veneer for the other side's test groove veneer;
4. this test groove veneer detects to the presence information of method, single with to method, single according to this plate and detects the presence information of this veneer, and indication conflicts on the panel of this test groove veneer;
5. the other side's test groove veneer detects the presence information to method, single according to the presence information that method, single is detected this veneer and this plate, and indication conflicts on the panel of the other side's test groove veneer.
In the said method the 1st step is arranged on line states and detects and be respectively: this test groove veneer is to detecting the method, single presence and the presence detection of the other side's test groove veneer to this veneer.
In the said method the 4th, 5 steps are made in the indication that conflicts on this veneer after being meant that the veneer of two test grooves is judged the presence information of detected two test groove veneers separately.
This plate of above-mentioned test groove veneer detection detects the other side's plate online information and this plate of the other side's test groove veneer detection online information is same information source.
A kind of active and standby test groove collision detection and indicating circuit that the present invention proposes; Comprise main with groove position veneer to spareslots position veneer at line detection circuit; Spareslots position veneer is to leading with groove position veneer at line detection circuit; Conflict is judged and indicating circuit; Wherein the master links to each other through backboard at line detection circuit with groove position veneer to main with spareslots position veneer at line detection circuit to spareslots position veneer with groove position veneer, the logic diagram of circuit such as Fig. 1, and the active and standby test groove collision detection and the indicating circuit of wherein arbitrary groove position veneer comprise:
This groove position veneer presence is used for that this groove position veneer the other side plate is detected the online signal of this plate and connects power supply, so that can be in the strong pull-up resistor of correct status;
Be used for this groove position veneer the other side plate is detected the online signal of this plate through connector ground connection, make this groove position veneer presence can be in the weak pull down resistor of correct status, and pull down resistor be positioned on the backboard;
Be used for this groove position this plate of veneer is detected the online signal of the other side's plate through connector ground connection, make to square groove position veneer presence can be in correct status a little less than the resistance that gets off, and pull down resistor is positioned on the backboard;
Be used for the online signal of the other side's test groove veneer this veneer of detection, this test groove veneer are detected the conflict logic decision circuitry that the online signal of the other side's plate conflicts together and judges;
Be used to the indicating circuit of indicating conflict whether to take place.
Wherein the master links to each other to square groove position veneer line detection signal, to square groove position veneer this veneer line detection signal being intersected through backboard with this groove position veneer on test groove veneer, the subsequent use test groove veneer.
Above-mentioned online collision detection circuit also comprises and is used for this test groove veneer is detected the isolation buffers that the online signal of the other side's plate and the online signal of the other side's test groove veneer this plate of detection carry out isolation buffer, is used to prevent that instantaneous interference from impacting to online conflict logic decision circuitry and damage;
Above-mentioned conflict indicating circuit also comprises the driver of collision indication signal, is used to drive collision indication signal.
Above-mentioned online conflict decision logic circuit can be realized with complex programmable logic device (CPLD), also can use other logic judging circuits to realize.
In second step, explain that the present invention specifically realizes:
Be further described below in conjunction with 2 pairs of detailed technology contents of the present invention of accompanying drawing:
As shown in Figure 2: for this test groove veneer A; Pin 1_A; Weak pull down resistor R1 formation the other side plate on strong pull-up resistor R2_A and the backboard to this groove position veneer at line detection circuit; The resistance R of getting off a little less than on pin 2_A and the backboard 2 constitute these plates to square groove position veneer at line detection circuit, to square groove position plate to this groove position veneer line detection signal L1_A and this groove position veneer to square groove position veneer line detection signal L2_A is got into CPLD_A through Buffer_A; Wherein CPLD_A judges this groove position veneer and whether online to square groove position veneer according to the level value of L1_A and L2_A, is called as the conflict decision logic circuit of this groove position veneer.The effect of CPLD_A mainly makes to this groove position veneer with to the online signal of square groove position veneer carries out logic determines, provides collision indication signal then.The effect of Driver_A mainly is that the collision indication signal that CPLD_A exports is driven, thereby the state that lets the LED_A indicator light indicate level signal according to conflicting shows bright or goes out.R1_A is the current-limiting resistance of indicator light.For demonstration conflict situation that can be eye-catching, LED_A selects red light-emitting diode for use.The effect of Buffer_A is that holding wire is carried out isolation buffer, in order to avoid the CPLD_A of collisions logic judging circuit impacts and damages.For identical to the forming circuit of square groove position board B, L1 and L2 constitute the online signal cross circuit of backboard.
Operation principle of the present invention is following: when having only this test groove veneer A to plug; Pin 2_B is unsettled; Pin 1_A is in high level under the acting in conjunction of strong pull-up resistor R2_A on the veneer and the weak pull down resistor R1 on the backboard, at this moment the online signal L1_A of the other side's plate of veneer A detection this groove position veneer also is a high level, and pin 1_B is unsettled; Pin 2_A is in low level under the effect of the weak pull down resistor R2 on the backboard; At this moment this plate of veneer A is to the online line detection signal L2_A of square groove position veneer also being the ground low level, and conflict decision logic portion C PLD_A has only a veneer online according to the level judging testing backboard of L1_A and L2_A, and collision indication signal is high; Light-Emitting Diode LED_A on the veneer A is in the state of going out, and expression not conflict produces; Principle when having only the other side's test groove board B to plug is with only to insert veneer A the same; When simultaneously when this test groove and the other side's test groove are plugged veneer A and board B; Pin 1_A and 2_B are in high level under the acting in conjunction of strong pull-up resistor R2_A on the veneer A and the weak pull down resistor R1 on the backboard; It is high level that the other side's plate of veneer A detects the online signal L1_A of this plate; It also is high level that this plate of board B detects the online signal L2_B of the other side's plate; Pin 2_A and 1_B are in high level under the acting in conjunction of strong pull-up resistor R2_B on the board B and the weak pull down resistor R2 on the backboard, it is high level that this plate of veneer A detects the online signal L2_A of the other side's plate, and it also is high level that the other side's plate of board B detects the online signal L1_B of this plate; It is online that veneer A and board B have all detected this test groove and the other side's test groove veneer like this; The conflict of collision detection logic determines exists, and the collision indication signal level is a low level, so veneer A and board B all let conflict indication light-emitting diode bright; At this moment it is all bright that the tester can observe the redness conflict indicator light of two veneers, will conflict earlier with beginning to test after handling again.
Claims (8)
1. an active and standby test groove collision detection circuit is characterized in that, comprises main or be equipped with detecting the online bleeder circuit unit of this plate on the test groove in the veneer; Said bleeder circuit unit is made up of pin, the weak pull down resistor that is positioned at the strong pull-up resistor of this plate and is positioned at backboard; The dividing potential drop node of this bleeder circuit unit directly connects this plate collision detection unit one input through this plate isolation buffers, and connects the other side's plate collision detection unit one input through backboard wiring through the other side's plate isolation buffers; Said collision detection unit is the voltage comparator circuit with two inputs.
2. according to the said testing circuit of claim 1, it is characterized in that said voltage comparator circuit is a logic judging circuit.
3. according to the said testing circuit of claim 2, it is characterized in that said logic judging circuit is the CPLD of customization.
4. according to the said testing circuit of claim 1, it is characterized in that this testing circuit also is included in main or is equipped with this plate conflict indicating member that is connected with this plate collision detection unit in the veneer on the test groove.
5. according to the said testing circuit of claim 4, it is characterized in that said conflict indicating member comprises indicator light and driving thereof.
6. an active and standby test groove collision detection method is characterized in that, utilizes bleeder circuit unit and collision detection unit, may further comprise the steps:
A) utilize this plate bleeder circuit unit to detect this plate presence and offer the other side's plate through the backboard line, said bleeder circuit unit is made up of pin, the weak pull down resistor that is positioned at the strong pull-up resistor of this plate and is positioned at backboard;
B) this plate collision detection unit is known and is detected the control that whether conflicts according to the presence of this plate and the other side's plate through this plate isolation buffers.
7. according to the said detection method of claim 6, it is characterized in that this detection method comprises that also said collision detection unit indicates according to the corresponding conflict of testing result control indicating device.
8. according to the said detection method of claim 7, it is characterized in that said conflict indicating device comprises indicator light and driving thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100906364A CN101552709B (en) | 2008-04-02 | 2008-04-02 | Master and slave test groove collision detection method and circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100906364A CN101552709B (en) | 2008-04-02 | 2008-04-02 | Master and slave test groove collision detection method and circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101552709A CN101552709A (en) | 2009-10-07 |
| CN101552709B true CN101552709B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100906364A Active CN101552709B (en) | 2008-04-02 | 2008-04-02 | Master and slave test groove collision detection method and circuit |
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| CN (1) | CN101552709B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447578B (en) * | 2011-11-23 | 2014-10-29 | 瑞斯康达科技发展股份有限公司 | Backup method and device |
| CN109495164A (en) * | 2017-09-13 | 2019-03-19 | 凌云天博光电科技股份有限公司 | A kind of slot number recognition methods and device |
| CN109495176A (en) * | 2017-09-13 | 2019-03-19 | 凌云天博光电科技股份有限公司 | The setting method and system of slot in a kind of machine frame |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398775Y (en) * | 1999-07-21 | 2000-09-27 | 深圳市华为技术有限公司 | Hardware implementation device of main spare operate mode |
| CN2398802Y (en) * | 1999-09-21 | 2000-09-27 | 深圳市华为技术有限公司 | One-board switching circuit |
| CN1992649A (en) * | 2005-12-27 | 2007-07-04 | 迈普（四川）通信技术有限公司 | Method for on-line detection of master-slave board and circuit thereof |
-
2008
- 2008-04-02 CN CN2008100906364A patent/CN101552709B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398775Y (en) * | 1999-07-21 | 2000-09-27 | 深圳市华为技术有限公司 | Hardware implementation device of main spare operate mode |
| CN2398802Y (en) * | 1999-09-21 | 2000-09-27 | 深圳市华为技术有限公司 | One-board switching circuit |
| CN1992649A (en) * | 2005-12-27 | 2007-07-04 | 迈普（四川）通信技术有限公司 | Method for on-line detection of master-slave board and circuit thereof |
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| Publication number | Publication date |
|---|---|
| CN101552709A (en) | 2009-10-07 |
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