CN102072994A - Electrostatic test method for simulating practical service environment of product and neighboring equipment simulator - Google Patents
Electrostatic test method for simulating practical service environment of product and neighboring equipment simulator Download PDFInfo
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- CN102072994A CN102072994A CN2010105364167A CN201010536416A CN102072994A CN 102072994 A CN102072994 A CN 102072994A CN 2010105364167 A CN2010105364167 A CN 2010105364167A CN 201010536416 A CN201010536416 A CN 201010536416A CN 102072994 A CN102072994 A CN 102072994A
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Abstract
The invention discloses an electrostatic test method for simulating a practical service environment of a product and a neighboring equipment simulator. The method comprises the following steps of: connecting tested equipment with the neighboring equipment simulator through a connecting cable; applying static electricity to the neighboring equipment simulator; and performing electrostatic test on the tested equipment, wherein the neighboring equipment simulator comprises an analog power supply, a jumper module and a PCB (Printed Circuit Board), wherein the analog power supply is connected with a protective ground (PGND) and a ground (GND), the jumper module is connected with the GND and the PGND, and the PCB is connected with the PGND. The neighboring equipment simulator is connected with the tested equipment through the cable, the jumper module in the neighboring equipment simulator is reasonably set, and the power supply and the PCB are connected with the GND and the PGND, so that the electrostatic problem of communication products in practical service during cable connection can be simulated; and the scheme is simple to design, does not consume much equipment, meanwhile, can be used for conveniently and effectively testing the electrostatic problem of the neighboring equipment and the tested equipment, and improves the electrostatic test effect.
Description
Technical field
The present invention relates to the electrostatic test technology of communication product, the static electricity testing method of the actual environment for use of particularly a kind of analog equipment and nearby device simulator.
Background technology
In the running environment of communication product, human body or some equipment are easy to be with static.When equipment being discharged, may cause phenomenons such as device damage, system disorders with the object of going up static.And equipment is carried out electrostatic test, anti-static ability that can assessment apparatus, the problem of discovering device under the situation of static discharge.The electrostatic test of communication products is meant environment and equipment according to standard code, adopts electrostatic generator to carry out the performance of static discharge when suffering static discharge with assessment electronics and electrical equipment to being subjected to examination equipment.
Environment and equipment required during electrostatic test comprise: nearby device is meant and is subjected to examination equipment that the equipment of cable annexation is arranged; Coupling plate is a sheet metal or sheet metal, it is discharged simulate being subjected near the discharge of the object examination equipment.Protection ground (protective ground is hereinafter to be referred as PGND) is the protection zone network of equipment, directly is connected with the earth usually.Its effect is the energy that might cause danger on the equipment of releasing, the safety of protection human body and equipment.Work is mainly used in the backflow of working signal with reference to ground (ground is hereinafter to be referred as GND).
In the scheme of prior art, electrostatic test mainly is the part that contacts of being tried equipment, simulation human body or machinery are tried the influence of equipment when it discharge, or to the coupling plate discharge, with simulate human body or equipment when nearby device is discharged to being tried the influence of equipment.Discharge to nearby device only has a kind of model of coupling plate.Its interference principle is that static discharges to coupling plate, produces electric field or magnetic field on coupling plate, to being tried the equipment effect.In the actual conditions, connection cable is arranged usually between the equipment, static might pass through connection cable, is delivered to the examination equipment that is subjected to.Thereby make and be subjected to examination equipment to occur unusual because of being subjected to the static harassing and wrecking.Above-mentioned static electricity testing method is subjected to by examination equipment in the time of can not testing out nearby device and be subjected to examination equipment to have cable to be connected influence.
If adopt real nearby device, carry out electrostatic test, then have following shortcoming: the annexation that 1, in most cases needs different types of a plurality of nearby device could will be tried equipment is enumerated fully, and test can expend the very big time, energy and device resource.Though its connector of the equipment that 2, has is the same, the connection of internal signal wire is different, test leakage easily.
Therefore, static electricity testing method of the prior art, existence can not the Validity Test nearby device electrostatic problem when being subjected to examination equipment to have cable to be connected, perhaps have very large equipment resource and time energy, the problem of carrying out electrostatic test that can not be simple and effective of expending.
Summary of the invention
The invention provides the static electricity testing method and the nearby device simulator of the actual environment for use of a kind of analog equipment, can be under the situation of using less equipment, the electrostatic problem when having cable to connect between the communication facilities is easily and effectively tested, and effectively promotes reliability of products.
The invention provides the static electricity testing method of the actual environment for use of a kind of analog equipment, comprising:
Be connected by connection cable with the nearby device simulator by examination equipment, described nearby device simulator comprises: analog power, jumper wire device module and printing board PCB, and wherein, described analog power is connected with reference to ground GND with protection ground PGND and work; Described jumper wire device module is connected with PGND with GND, and described PCB is connected with PGND;
To described dispensing static, the described examination equipment that is subjected to is carried out electrostatic test.
The present invention also provides a kind of nearby device simulator, comprising: analog power, jumper wire device module and printing board PCB, and wherein, described analog power is connected with reference to ground and GND with the PGND work of protection ground; Described jumper wire device module is connected with PGND with GND, described PCB is connected with PGND; When carrying out electrostatic test, described nearby device simulator is connected with being subjected to examination equipment by connection cable, by described nearby device simulator is discharged static so that the described examination equipment that is subjected to is carried out electrostatic test.
The present invention is by being connected by cable the nearby device simulator with being subjected to examination equipment, by the jumper wire device module in the nearby device simulator rationally is set, the connected mode of power supply and PCB and GND and PGND, electrostatic problem when product that can the analog communication class has cable to connect in actual use, this conceptual design is simple, can not expend a lot of equipment, can test nearby device and the electrostatic problem that is tried equipment simultaneously easily and effectively, improve the effect of electrostatic test.
Description of drawings
The environment synoptic diagram of the electrostatic test that Fig. 1 a provides for first embodiment of the invention;
The static electricity testing method process flow diagram of the actual environment for use of analog equipment that Fig. 1 b provides for first embodiment of the invention;
The structural drawing of the nearby device simulator that Fig. 1 c provides for first embodiment of the invention;
The circuit connection diagram of the jumper wire device module that Fig. 1 d provides for first embodiment of the invention;
The connection diagram of interface section in the nearby device simulator that Fig. 1 e provides for first embodiment of the invention;
The structural representation of the nearby device simulator that Fig. 2 provides for second embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtained under the creative work prerequisite.
The embodiment of the invention provides the static electricity testing method of the actual environment for use of a kind of analog equipment, be the environment synoptic diagram of the electrostatic test of present embodiment as shown in Figure 1a, the environment of this electrostatic test is a kind of habitual environment of electrostatic test, and present embodiment also can be not limited to and use this electrostatic test environment.
The electrostatic test environment is as follows: be placed with on the ground connection flat board on the high wood table for 0.8m.Wood table is gone up and is placed a size and be about the copper coin that 1.6m*0.8m, thickness are not less than 0.25mm.Copper coin is received PGND by the resistance in two 470k Europe, guarantees the good ground connection of electrostatic test environment of building thus, can not produce testing apparatus and disturb, and guarantee the accuracy of testing.It is the same with copper coin to place an area on copper coin, and thick is the insulating mat of 0.5mm.Power supply wherein, nearby device simulator and be placed on the insulating mat by examination equipment.The ground connection flat board is connected on the PGND by cable.
By above-mentioned introduction as can be known, in this electrostatic test environment, adopted certain thickness copper coin ground connection, make the ground connection that the electrostatic test environment can be good, the equipment of building the electrostatic test environment can not produce interference to testing apparatus as wood table, ground connection flat board etc., in addition, and power supply, nearby device simulator and be subjected to examination equipment all to be placed on the insulating mat, make electrostatic test can not be subjected to the interference of external device, guaranteed the accuracy of electrostatic test.
After arranging above-mentioned electrostatic test environment, utilize the nearby device simulator in a charged source, its port is linked to each other with being subjected to examination equipment by cable, realize test model with this.Utilize this test model, be depicted as the static electricity testing method process flow diagram of the actual environment for use of analog equipment of present embodiment referring to Fig. 1 b; Method comprises:
In the present embodiment, the nearby device simulator is the core ingredient of electrostatic test, and the structural drawing of nearby device simulator is shown in Fig. 1 c, and the nearby device simulator is used for simulating and the physical device that linked to each other by examination equipment.Because in actual environment, the zone network of static discharge and equipment is closely related, so the zone network annexation of main simulation nearby device in the nearby device simulator.Be connected by connection cable with the nearby device simulator by examination equipment, the electrostatic problem that may exist when having cable to connect between just can analog machine.
Wherein, the power supply in the nearby device simulator is not used for to nearby device simulator power supply, but is used for simulating the annexation of the PGND on the power supply in the actual product and GND.Power supply is power supply commonly used, as: the redundant power of two core adaptor power supplies, three core adaptor power supplies, Switching Power Supply, redundant power system (Redundant Power System is hereinafter to be referred as RPS) type etc.For three core power supplys, RPS redundant power etc., the PGND pin of supply socket must be received the PCB part by copper cash, and all the other no pins are unsettled.And for the GND of power supply, the connected mode of itself and PGND may be direct-connected, also may be by mode ground connection such as capacitance-resistances, and this part is realized by the jumper wire device Module Design.
Be depicted as the circuit connection diagram of the jumper wire device module that present embodiment provides referring to Fig. 1 d, in the present embodiment, comprise in parallel in the described jumper wire device module and resistance circuit, condenser network and inductive circuit that include jumper wire device, described jumper wire device in the described jumper wire device module, resistance, electric capacity or the inductance of pin by the jumper wire device module that is used for controlling the GND of described jumper wire device module section is connected with the PGND of PCB.
In physical device, the connected mode of GND and PGND has a variety of, can select connected mode between GND and the PGND by the jumper wire device module.Shown in Fig. 1 d, the jumper wire device module can comprise four road circuit, the jumper wire device circuit, have jumper wire device resistance circuit, have the condenser network of jumper wire device and have the inductive circuit of jumper wire device.By the jumper wire device in each parallel circuit of jumper wire device module, the pin that just can control GND is by resistance, electric capacity, inductance by the selection of jumper wire device module or directly links to each other with the PGND of PCB part.These four kinds of connected modes of GND and PGND respectively have characteristics: link to each other by electric capacity, at HFS, impedance between the two is low, can think to communicate, and low frequency d.c. component, and impedance between the two is very big, can think to isolate; Link to each other by inductance L, at low frequency and direct current component, impedance between the two is little, can think to communicate, and at HFS, impedance between the two is very big, can think to isolate; For direct-connected, communicate between the two; Connecting for resistance, is that between has certain potential difference (PD), and adopts during design when needing current limliting.During test, can select which kind of connection to test according to the design conditions of actual product, the composition of jumper wire device module can for the jumper wire device circuit of parallel connection, have jumper wire device resistance circuit, have the condenser network of jumper wire device and have one of these the four kinds of circuit of inductive circuit or the combination of jumper wire device.
Among the PCB of nearby device simulator, the PGND of PCB receives on the metal shell by screw.The main effect of PCB provides a PGND network, is used to connect the PGND and the signal wire of power unit and interface section.
For making it possible to simulate polytype communication products by the nearby device simulator, also be provided with the interface section on the nearby device simulator of present embodiment, the interface section includes but not limited to one or more in the following connector: DB9, RJ45, RJ11, HDMI and USB connector.Wherein, DB9 belongs to the interface standard of RS232 serial ports, uses 9 signal wires; RJ45, RJ11 are by international connector standard definition modular jack or plug; HDMI belongs to video interface.
Be depicted as the connection diagram of interface section in the nearby device simulator as Fig. 1 e, the jumper wire device module is connected by the interface section of signal wire with described nearby device simulator, and the interface section of nearby device simulator is connected with the PGND of PCB by the PGND signal wire.Different connectors is selected in the interface section of nearby device simulator, the nearby device simulator just is equivalent to the communication products of respective type, as the jumper wire device module is connected with the USB connector of nearby device simulator by signal wire, then just can simulate the electrostatic influence of USB connection device to produced by examination equipment.
Because the static harassing and wrecking can be sought nearest ground circuit and be back to the source end, so the earthing mode of interface section connector is very important.Signal wire in the connector can adopt by resistance, electric capacity, inductance or direct-connectedly is connected with PGND, also can adopt the mode of these four kinds of any multiple combinations of mode.As being connected with PGND by parallel resistor and electric capacity.Shown in Fig. 1 e.The annexation on signal and ground is selected by the jumper wire device module.Wherein, the jumper wire device module section design among Fig. 1 e is the example explanation with the connected mode of a signal wire, and other signal wire designs are consistent with it.Every signal wire of the connector of interface section is selected to link to each other with PGND by the wire jumper socket.In the process of test, which signal wire the experimenter can select be connected with PGND according to the actual connection situation of port.In addition, connection cable is used for connecting the nearby device simulator and is tried equipment, can adopt different common cables according to different ports, with the actual use of good simulation situation.
When testing, the static electricity testing method in the employing standard in the test environment as shown in Figure 1a, uses static gun that the metal of nearby device simulator is partly carried out contact discharge, as the metal part of connector, screw etc.; Atmospherical discharges is carried out in slit and nonconducting part, observe the reaction of the equipment that tried.
In the test process, the static harassing and wrecking can sought the path of impedance recently, are back to ground.Wherein the part harassing and wrecking can flow to equipment under test by connection cable through the impedance between PGND and the connection cable, are back to the ground connection flat board again, and it is unusual that this just causes equipment under test to take place possibly.
During measurement, as shown in Figure 1a, according to using a model of reality, choose the connected mode of signal wire and PGND and the form of power supply, and connect power supply and be subjected to examination equipment.Discharge measuring mode according to standard code is discharged to the nearby device simulator, observes the ruuning situation of the equipment that tried.
By said method as can be seen, present embodiment is by adopting the nearby device simulator, and the nearby device simulator is connected with being subjected to examination equipment by cable, be provided with the jumper wire device module in the nearby device simulator, power supply and PCB, by the connected mode of itself and GND and PGND rationally is set, simulated the annexation of nearby device and zone network.This conceptual design is simple, can not expend a lot of equipment, and the electrostatic problem of Validity Test nearby device when being subjected to examination equipment to have cable to be connected simultaneously improved the effect of electrostatic test.
What can expect is that except the test electrostatic apparatus, the nearby device simulator in the employing present embodiment also can be applied in the schemes such as immunity to interference test of simulation actual environment.
Present embodiment is crossed employing nearby device simulator, and the nearby device simulator is connected with being subjected to examination equipment by cable, by the jumper wire device module in the nearby device simulator rationally is set, the connected mode of power supply and PCB and GND and PGND, electrostatic problem when product that can the analog communication class has cable to connect in actual use, this conceptual design is simple, can not expend a lot of equipment, can test simultaneously nearby device and the electrostatic problem that is tried equipment easily and effectively, improve the effect of electrostatic test.
The structural representation of the nearby device simulator that Fig. 2 provides for second embodiment of the invention is used to carry out the electrostatic test of the actual environment for use of analog equipment, and this nearby device simulator comprises:
When carrying out electrostatic test, described nearby device simulator is connected with being subjected to examination equipment by connection cable, by using discharge equipments such as static gun described nearby device simulator is discharged static so that the described examination equipment that is subjected to is carried out electrostatic test.
Wherein, analog power 21 is two core adaptor power supplies, three core adaptor power supplies, Switching Power Supply or RPS redundant power.
Comprise one of four or combination of following circuit in parallel in the jumper wire device module 22: the jumper wire device circuit, have jumper wire device resistance circuit, have the condenser network of jumper wire device and have the inductive circuit of jumper wire device, described jumper wire device in the described jumper wire device module, resistance, electric capacity or the inductance of pin by the jumper wire device module that is used for controlling the GND of described jumper wire device module section is connected with the PGND of PCB.
Jumper wire device module 22 is connected by the connector of signal wire with the nearby device simulator, and the connector of nearby device simulator is connected with the PGND of PCB by the PGND signal wire.Connector can be referring to Fig. 1 e with being connected of jumper wire device module in the nearby device simulator.This nearby device simulator comprises and is not limited to one or more in the following connector: DB9, RJ45, RJ11, HDMI and USB connector.
Device in the present embodiment with connected by examination equipment and the method and the effect of electrostatic test can not repeat them here referring to the record of Fig. 1 a～corresponding embodiment of Fig. 1 e.
The device of present embodiment is connected with being subjected to examination equipment by cable, by the jumper wire device module rationally is set, the connected mode of power supply and PCB and GND and PGND, electrostatic problem when product that can the analog communication class has cable to connect in actual use, this conceptual design is simple, can not expend a lot of equipment, can test the electrostatic problem of the equipment of being tried simultaneously easily and effectively, improve the effect of electrostatic test.
One of ordinary skill in the art will appreciate that: accompanying drawing is the synoptic diagram of an embodiment, and module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
One of ordinary skill in the art will appreciate that: the module in the device among the embodiment can be described according to embodiment and be distributed in the device of embodiment, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforementioned storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of embodiment of the invention technical scheme.
Claims (10)
1. the static electricity testing method of the actual environment for use of analog equipment is characterized in that, comprising:
Be connected by connection cable with the nearby device simulator by examination equipment, described nearby device simulator comprises: analog power, jumper wire device module and printing board PCB, and wherein, described analog power is connected with reference to ground GND with protection ground PGND and work; Described jumper wire device module is connected with PGND with GND, and described PCB is connected with PGND;
To described nearby device simulator dispensing static, the described examination equipment that is subjected to is carried out electrostatic test.
2. the static electricity testing method of the actual environment for use of analog equipment according to claim 1 is characterized in that,
Described analog power is two core adaptor power supplies, three core adaptor power supplies, Switching Power Supply or redundant power.
3. the static electricity testing method of the actual environment for use of analog equipment according to claim 1 is characterized in that,
Comprise one of four or combination of following circuit in parallel in the described jumper wire device module: the jumper wire device circuit, have jumper wire device resistance circuit, have the condenser network of jumper wire device and have the inductive circuit of jumper wire device, described jumper wire device in the described jumper wire device module, resistance, electric capacity or the inductance of pin by the jumper wire device module that is used for controlling the GND of described jumper wire device module is connected with the PGND of PCB.
4. the static electricity testing method of the actual environment for use of analog equipment according to claim 1 is characterized in that,
Described jumper wire device module is connected by the connector of signal wire with described nearby device simulator, and the connector of described nearby device simulator is connected with the PGND of PCB by the PGND signal wire.
5. the static electricity testing method of the actual environment for use of analog equipment according to claim 4 is characterized in that,
Described nearby device simulator comprises one or more in the following connector at least: DB9, RJ45, RJ11, HDMI and USB connector.
6. a nearby device simulator is characterized in that, comprising: analog power, jumper wire device module and printing board PCB, and wherein, described analog power is connected with reference to ground and GND with the PGND work of protection ground; Described jumper wire device module is connected with PGND with GND, described PCB is connected with PGND; When carrying out electrostatic test, described nearby device simulator is connected with being subjected to examination equipment by connection cable, by described nearby device simulator is discharged static so that the described examination equipment that is subjected to is carried out electrostatic test.
7. nearby device simulator according to claim 6 is characterized in that,
Described analog power is two core adaptor power supplies, three core adaptor power supplies, Switching Power Supply or redundant power.
8. nearby device simulator according to claim 6 is characterized in that,
Comprise one of four or combination of following circuit in parallel in the described jumper wire device module: the jumper wire device circuit, have jumper wire device resistance circuit, have the condenser network of jumper wire device and have the inductive circuit of jumper wire device, described jumper wire device in the described jumper wire device module, resistance, electric capacity or the inductance of pin by the jumper wire device module that is used for controlling the GND of described jumper wire device module section is connected with the PGND of PCB.
9. nearby device simulator according to claim 6 is characterized in that,
Described jumper wire device module is connected by the connector of signal wire with described nearby device simulator, and the connector of described nearby device simulator is connected with the PGND of PCB by the PGND signal wire.
10. nearby device simulator according to claim 9 is characterized in that,
Described nearby device simulator comprises one or more in the following connector at least: DB9, RJ45, RJ11, HDMI and USB connector.
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| CN 201010536416 CN102072994B (en) | 2010-11-04 | 2010-11-04 | Electrostatic test method for simulating practical service environment of product and neighboring equipment simulator |
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| CN 201010536416 CN102072994B (en) | 2010-11-04 | 2010-11-04 | Electrostatic test method for simulating practical service environment of product and neighboring equipment simulator |
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| CN102072994B CN102072994B (en) | 2013-05-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108051658A (en) * | 2017-12-12 | 2018-05-18 | 郑州云海信息技术有限公司 | A kind of ESD measurement jigs and test method for plate end |
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| CN102072994B (en) | 2013-05-29 |
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