CN202267953U - Electronic circuit product chip-scale maintenance intelligent detection card - Google Patents
Electronic circuit product chip-scale maintenance intelligent detection card Download PDFInfo
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- CN202267953U CN202267953U CN2011203864892U CN201120386489U CN202267953U CN 202267953 U CN202267953 U CN 202267953U CN 2011203864892 U CN2011203864892 U CN 2011203864892U CN 201120386489 U CN201120386489 U CN 201120386489U CN 202267953 U CN202267953 U CN 202267953U
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Abstract
The utility model discloses an electronic circuit product chip-scale maintenance intelligent detection card, which comprises a power supply, an input port, a bidirectional port, a communication interface unit and a control unit. The input port collects level signals and identification (ID) information of detected objects and sends the level signals and the ID information to the control unit. The bidirectional port collects frequency signals and analog quantity signals of the detected objects, sends the frequency signals and the analog quantity signals to the control unit, and sends driving signals to the detected objects according to instructions of the control unit. The communication interface unit is connected with the control unit and an external personal computer (PC) through signals. The control unit receives information collected by the input port and the bidirectional port, processes the information into information capable of being recognized by the PC, sends the information to the external PC through the communication interface unit, simultaneously receives control orders sent by the external PC, and sends driving instructions for driving the detected objects to the bidirectional port according to the control orders. The electronic circuit product chip-scale maintenance intelligent detection card has generality and an intelligent detection method.
Description
Technical field
The utility model relates to a kind of electronic circuit product chips level maintenance and uses equipment, particularly a kind of universal electronic circuit product chips level maintenance Intelligent Measurement card.
Background technology
The electronic circuit maintenance of products need be by specific purpose tool, and especially in some occasions that need carry out the chip-scale maintenance, for example computer main board often will use custom-designed test card could accomplish maintenance job.This test card has the interface circuit that matches with the detected circuit plate, cooperates special-purpose fault detecting software in maintenance, to use.A kind of test card that is exclusively used in computer main board be exactly have with mainboard on the corresponding interface expanded circuit of particular slot; Can be plugged on the mainboard, read the self-check program testing result among the BIOS then, and show through code; In conjunction with the code definition table, just can confirm the fault of mainboard.The ultimate principle of this detection scheme is representing once more equipment embedded software testing result; Its testing result is subject to the predefine scope of embedded software, and especially the large tracts of land damage occurring at hardware then can't provide testing result accurately when perhaps embedded software can't move.And be subject to fixing interface, and this kind test card can only be used in specific applications, and versatility is very poor.
In the chip-scale maintenance, also there are some technician to use general maintenances of equipment such as multimeter, oscillograph to detect.But because these equipment all are standardized products; Its function ratio is more fixing; Can only carry out the detection of conventional circuit physical characteristics; The maintenance that general technician will use these equipment to carry out chip-scale then need possess knowledge, technology and the experience of certain degree, and the intelligent degree of these means are very low, can not be well and the mutual communication of equipment such as computing machine.Functions such as especially present circuit board, chip from strength to strength, often the equipment of needing repairing can have certain intelligent level so that detect and debugging, and equipment such as this traditional exactly multimeter, oscillograph are not available.Especially when imparting knowledge to students, general apparatus in comparison is very poor in the intuitive of dedicated test card, is not suitable for very much to the student, and especially the beginner explains.
Therefore, need to occur a kind of suitable versatility that both had, test card is used in the chip-scale maintenance that possesses certain intelligent detection means again, to satisfy the chip-scale maintenance and the need of teaching of electronic circuit product simultaneously.
The utility model content
The utility model is in order to overcome above-mentioned defective of the prior art, a kind of versatility that both possessed to be provided, possessing the electronic circuit product chips level maintenance Intelligent Measurement card of intelligent detection means again, to satisfy the needs of maintenance and teaching.
For realizing above-mentioned purpose, the openly following technical scheme of the utility model:
A kind of electronic circuit product chips level maintenance Intelligent Measurement card; Comprise power supply; Also comprise input port, bidirectional port, communications interface unit and control module; Wherein: the level signal and the id information of said input port acquisition testing object, and send this level signal and id information to said control module; The frequency signal and the analog signals of said bidirectional port acquisition testing object send said control module to, also send drive signal according to the instruction of said control module to detected object; Said communications interface unit signal connects said control module and exterior PC; Said control module receives the information of said input port and the collection of said bidirectional port; And send to exterior PC through said communications interface unit after it is treated to the PC identifiable information; Also receive the control command that exterior PC is sent simultaneously, and send the driving command that drives detected object to said bidirectional port according to this control command.
Preferably, said control module is a single-chip microcomputer.
Preferably; Said input port comprises an input interface and the input port expanded circuit and the ID port expansion circuit that are connected with this input interface signal respectively; Wherein: said input interface can be connected level signal on the acquisition testing object and id information through external wire or the mode of directly pegging graft with detected object; The level signal that said input port expanded circuit collects said input interface sends said control module to; The id information that said ID port expansion circuit collects said input interface sends said control module to.
Preferably, said input port expanded circuit and said ID port expansion circuit include the parallel input string line output shift register of one or more cascades.Especially preferred said parallel input string line output shift register is the 74LS165 chip, and wherein: when said 74LS165 chip was one, its parallel input end was connected with said input interface signal, and its serial output terminal is connected with said control module signal; When said 74LS 165 chips when being a plurality of, its parallel input end all is connected with said input interface signal, its serial output terminal cascade, and the afterbody serial output terminal is connected with said control module signal.
Preferably; Said bidirectional port comprises an input/output interface and the output port expanded circuit, frequency input expander and the analog quantity input expander that are connected with this input/output interface signal respectively; Wherein: said input/output interface can be connected with detected object through external wire or the mode of directly pegging graft, and transmits frequency signal and analog signals on level signal and the acquisition testing object to detected object; Said output port expanded circuit receives the instruction of said control module, and sends drive signal through said input/output interface to detected object according to this instruction; Said frequency input expander receives the detected frequency signal of said input/output interface, and sends this frequency signal to said control module; Said analog quantity input expander receives the detected analog signals of said input/output interface, and sends this analog signals to said control module.
Preferably, said output port expanded circuit comprises the SI PO shift register of one or more cascades, and said frequency input expander and said analog quantity input expander include at least one hilted broadsword and throw analog switching circuit more.Especially preferred said SI PO shift register is the 74LS164 chip; It is the CD4051 chip that said hilted broadsword is thrown analog switching circuit more; Wherein: when said 74LS164 chip is one; Its serial input terminal receives the instruction of said control module, and its parallel output terminal sends drive signal through said input/output interface to detected object according to this instruction; When said 74LS164 chip was a plurality of cascade, elementary serial input terminal wherein received the instruction of said control module, and its parallel output terminal sends drive signal through said input/output interface to detected object according to this instruction; The public input/output terminal of said CD4051 chip is communicated by letter with said control module with channel address gating end and is connected, and the analog quantity input end then receives frequency signal and the analog signals that said input/output interface is gathered.
Preferably, said communications interface unit is Transistor-Transistor Logic level and 232 level shifting circuits, through the conversion of Transistor-Transistor Logic level and 232 level, accomplishes serial communication.
Compared with prior art, the utlity model has following beneficial effect:
1, adopt single-chip microcomputer as control module; Not only can make detection to level signal and analog signals; Can also make detection to frequency signal; Simultaneously can also utilize program to make single-chip microcomputer carry out logical operation, thereby make judgement, make the test card of the utility model have intelligent characteristic detected signal; In addition, single-chip microcomputer can also come through common means of communication to carry out exchanges data with exterior PC easily, thereby has expanded the application intuitive and the range of application of the test card of the utility model greatly, cooperates software can carry out teaching demonstration easily; Also having a benefit is exactly to utilize single-chip microcomputer to drive the chip on the tested circuit board; Come the various applied environments of analog chip or particular electrical circuit through program; So just be very easy to Function detection and maintenance, also greatly expanded the range of application of the utility model chip.
2, the form of input interface and input/output interface can flexible design, both can be designed to plug-in type to be applicable to the detected object of fixed type, also can be designed to lead type and to make things convenient for the user dissimilar detected objects detected and keeps in repair.
3, use hilted broadsword to throw analog switch more, incorporate that to go here and there out the benefit of shift register and SI PO shift register etc. be to utilize a few port on the single-chip microcomputer to realize the I/O of multichannel data into; Thereby both saved the interface resource of single-chip microcomputer, realized good conformity again effectively complicated circuit.
4, incorporate into and go here and there out shift register simultaneously incoming level signal and id information; Export to single-chip microcomputer with serial mode then; Can not produce the chaotic and interference of data; So just can be integrated in input port expanded circuit and ID port expansion circuit and go here and there out in the shift-register circuit same incorporating into, can effectively save cost and simplify circuit.
Description of drawings
Fig. 1 is the theory diagram of the utility model;
Fig. 2 is the theory diagram of the input port among Fig. 1;
Fig. 3 is the theory diagram of the bidirectional port among Fig. 1;
Fig. 4 is a kind of embodiment of Fig. 2;
Fig. 5 is a kind of embodiment of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of embodiment.
A kind of electronic circuit product chips level maintenance Intelligent Measurement card; (test card among the figure is meant the electronic circuit product chips level maintenance Intelligent Measurement card of the utility model) as shown in Figure 1; Comprise to the test card each several part and the power supply, input port, bidirectional port, communications interface unit of electric energy is provided and as the single-chip microcomputer of control module; Wherein: said input port collection is as level signal on the function card of detected object and id information, and sends this level signal and id information to single-chip microcomputer; The frequency signal and the analog signals of said bidirectional port acquisition function card send single-chip microcomputer to, also send drive signal according to the instruction of single-chip microcomputer to function card; Said communications interface unit signal connects single-chip microcomputer and exterior PC; Single-chip microcomputer receives the information of said input port and the collection of said bidirectional port; And send to exterior PC through said communications interface unit after it is treated to the PC identifiable information; Also receive the control command that exterior PC is sent simultaneously, and send the driving command that drives function card to said bidirectional port according to this control command.Preferably, said communications interface unit is Transistor-Transistor Logic level and 232 level shifting circuits, through the conversion of Transistor-Transistor Logic level and 232 level, accomplishes serial communication, facilitates the use 232 data buss and carries out the communication between single-chip microcomputer and the PC.
As shown in Figure 2; Said input port comprises an input interface and the input port expanded circuit and the ID port expansion circuit that are connected with this input interface signal respectively; Wherein: said input interface can be connected level signal on the acquisition function card and id information through external wire or the mode of directly pegging graft with function card; Said input port expanded circuit sends the level signal that said input interface collects to single-chip microcomputer; Said ID port expansion circuit sends the id information that said input interface collects to single-chip microcomputer.
Fig. 4 is a kind of embodiment of scheme shown in Figure 2.Input port expanded circuit among Fig. 2 and ID port expansion circuit in Fig. 4 by five parallel input string line output shift register 74LS165 (U2～U6) form.The last SH/LD end of U2～U6 is that displacement is that input end of clock, CLKINH are the clock diablement ends with set control end, CLK, the signal controlling that these three ports are sent by single-chip microcomputer all; The SER end is to be used for the head and the tail link that a plurality of 74LS165 expand, and QH is a serial output terminal, and A～H is parallel input end.According to the cascade system shown in Fig. 4; U6 is a primary side, and U2 is terminal, and the signal conveys of its serial output terminal U2QH is given single-chip microcomputer; And each last parallel input end of U2～U6 all is connected on the interface circuit J4, is used for level signal and id information on the measuring ability card.Because also being the mode with level signal, the id information in the reality on the function card is sent on the J4; So same 74LS165 chip both can detect the level information of reflection function card circuit state; Can detect the id information on the function card again; So just can input port expanded circuit among Fig. 2 and ID port expansion circuit be integrated, help simplifying circuit, save cost.Interface circuit J4 is corresponding to the input interface part shown in Fig. 2.If when the scheme of present embodiment is used to detect the function card with fixing specification, can consider J4 is made plug-in type, when using so direct grafting both can, be simple and easy to use; If it is fashionable to use it for the checkout area of indefinite type of functionality card, can consider J4 is made lead type more flexibly, so that adapt to the detection requirement of dissimilar circuit, chip.
As shown in Figure 3; Said bidirectional port comprises an input/output interface and the output port expanded circuit, frequency input expander and the analog quantity input expander that are connected with this input/output interface signal respectively; Wherein: said input/output interface can be connected frequency signal on the acquisition function card and analog signals through external wire or the mode of directly pegging graft with function card; Said output port expanded circuit receives the instruction of single-chip microcomputer, and sends drive signal through said input/output interface to function card according to this instruction, drives function card and produces corresponding action; Said frequency input expander receives the detected frequency signal of said input/output interface, and sends this frequency signal to single-chip microcomputer; Said analog quantity input expander receives the detected analog signals of said input/output interface, and sends this analog signals to single-chip microcomputer.
Fig. 5 is a kind of embodiment of scheme shown in Figure 3.Output port expanded circuit among Fig. 5 comprises the SI PO shift register 74LS164 chip (U7, U8) of two cascades; The frequency input expander comprises that a hilted broadsword eight throws analog switch CD4051 chip (U10), and the analog quantity input expander comprises that two hilted broadswords eight throw analog switch CD4051 chip (U9, U15).A on U7 and the U8, B end are serial input terminals, this two short circuit; The CLK end is that clock signal terminal, CLR are clear terminals, all receives the instruction of single-chip microcomputer, and Q0～Q7 then is a parallel output terminal.Among Fig. 5, the A of U7, B end are connected on the output port of single-chip microcomputer, receive the instruction of single-chip microcomputer, and the A of U8, B end link to each other with the parallel output terminal Q7 of U7, form cascade.Output terminal U7Q0～U7Q7 of U7 and output terminal U8Q0～U8Q7 of U8 all are connected on the interface circuit J5.A on U9, U10 and the U15, B, C are channel address gating ends; IOCOM is public input/output terminal; All link to each other with single-chip microcomputer; Single-chip microcomputer sends the triad signal and just in time can select some among eight input/output terminal IO0～IO7 to be communicated with IOCOM like this, thereby reads wherein certain signal on the way; Forbid holding INH and voltage end VEE, the equal ground connection of V-, the V+ termination power; IO0～IO7 is the analog quantity input end, is used for the analog signals on the acquisition function card, and the detection frequency signal is brought in the analog quantity input with U10 in this example.Particularly, input/output terminal (U9IO0～U9IO7, U10IO0～U10IO7, the U15IO0～U15IO7) all be connected on the J5 on three CD4051.J5 is corresponding to the input among Fig. 3, and is similar with the situation of J4, and in order to adapt to different use needs, J5 also can be designed to plug-in type or lead type.
During work, need single-chip microcomputer and external PC pre-installed software be controlled and interpretation of result through software.U2～U6 detects level signal and the id information on the function card and is transferred in the single-chip microcomputer, and single-chip microcomputer is discerned these level signals and id information according to the instruction in the program, and makes corresponding judgment according to programmed instruction.U7 and U8 can produce drive signal and export to function card according to the driving command that single-chip microcomputer sends; Thereby certain or some circuit on the driving function card and/or chip produce corresponding action, U9, U10 and U15 then be used for the brake card frequency and analog quantity intrinsic information and/or change information and send it to single-chip microcomputer.Single-chip microcomputer is made corresponding judgment according to the setting of software and/or the instruction of PC after collecting these information; Thereby just can produce the signal of particular state (for example fault has taken place certain chip on the function card) that can the reflection function card; And send signal to PC through Transistor-Transistor Logic level and 232 level shifting circuits, make operating personnel from PC, to understand testing result intuitively.In addition, operating personnel also can transmit some specific instructions to single-chip microcomputer with PC, thereby can make corresponding action by the control function card.So, no matter be the chip-scale maintenance or the relevant teaching of function card, very directly perceived and easy operating all become.
It will be appreciated that; The quantity of the 74LS165 that is mentioned in the present embodiment, 74LS164 and CD4051 is a plurality of; Its effect is not the range of application that is used to limit the utility model, but is used for showing a kind of enforcement thinking and the technical characterstic of the technical scheme of the utility model.In the reality, the quantity that can come each chip of flexible design according to the port resource of the complexity of function card and the single-chip microcomputer of selecting for use fully.Under the simplest situation, above-mentioned each chip is all only with a purpose that just can realize the utility model; Comparatively complicated at function card, in the time of need could accomplishing detection or maintenance task than the more a plurality of chips of present embodiment; Then expand more a plurality of chips according to same technical thought on the basis of embodiment in the above, equally should be within the utility model creation scope of the utility model.In addition; The communication modes of single-chip microcomputer and PC, the model of above-mentioned each chip also are not limited to the situation in the foregoing description; So long as satisfy the requirement of the utility model technical scheme on the function; Those skilled in the art just can replace in the scope of technological thought disclosed in the utility model, do not influence the realization of the utility model purpose.
More than the disclosed more excellent specific embodiment of the utility model that is merely, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.
Claims (9)
1. an electronic circuit product chips level maintenance Intelligent Measurement card comprises power supply, it is characterized in that, also comprises input port, bidirectional port, communications interface unit and control module, wherein:
The level signal and the id information of said input port acquisition testing object, and send this level signal and id information to said control module;
The frequency signal and the analog signals of said bidirectional port acquisition testing object send said control module to, also send drive signal according to the instruction of said control module to detected object;
Said communications interface unit signal connects said control module and exterior PC;
Said control module receives the information of said input port and the collection of said bidirectional port; And send to exterior PC through said communications interface unit after it is treated to the PC identifiable information; Also receive the control command that exterior PC is sent simultaneously, and send the driving command that drives detected object to said bidirectional port according to this control command.
2. electronic circuit product chips level maintenance Intelligent Measurement card according to claim 1 is characterized in that said control module is a single-chip microcomputer.
3. electronic circuit product chips level maintenance Intelligent Measurement card according to claim 1 and 2; It is characterized in that; Said input port comprises an input interface and the input port expanded circuit and the ID port expansion circuit that are connected with this input interface signal respectively, wherein:
Said input interface can be connected level signal on the acquisition testing object and id information through external wire or the mode of directly pegging graft with detected object;
The level signal that said input port expanded circuit collects said input interface sends said control module to;
The id information that said ID port expansion circuit collects said input interface sends said control module to.
4. electronic circuit product chips level maintenance Intelligent Measurement card according to claim 3 is characterized in that said input port expanded circuit and said ID port expansion circuit include the parallel input string line output shift register of one or more cascades.
5. electronic circuit product chips level maintenance Intelligent Measurement card according to claim 4 is characterized in that said parallel input string line output shift register is the 74LS165 chip, wherein:
When said 74LS165 chip was one, its parallel input end was connected with said input interface signal, and its serial output terminal is connected with said control module signal;
When said 74LS165 chip when being a plurality of, its parallel input end all is connected with said input interface signal, its serial output terminal cascade, and the afterbody serial output terminal is connected with said control module signal.
6. electronic circuit product chips level maintenance Intelligent Measurement card according to claim 1 and 2; It is characterized in that; Said bidirectional port comprises an input/output interface and the output port expanded circuit, frequency input expander and the analog quantity input expander that are connected with this input/output interface signal respectively, wherein:
Said input/output interface can be connected with detected object through external wire or the mode of directly pegging graft, and transmits frequency signal and analog signals on level signal and the acquisition testing object to detected object;
Said output port expanded circuit receives the instruction of said control module, and sends drive signal through said input/output interface to detected object according to this instruction;
Said frequency input expander receives the detected frequency signal of said input/output interface, and sends this frequency signal to said control module;
Said analog quantity input expander receives the detected analog signals of said input/output interface, and sends this analog signals to said control module.
7. electronic circuit product chips level maintenance Intelligent Measurement card according to claim 6; It is characterized in that; Said output port expanded circuit comprises the SI PO shift register of one or more cascades, and said frequency input expander and said analog quantity input expander include at least one hilted broadsword and throw analog switching circuit more.
8. electronic circuit product chips level maintenance Intelligent Measurement card according to claim 7 is characterized in that said SI PO shift register is the 74LS164 chip, and it is the CD4051 chip that said hilted broadsword is thrown analog switching circuit more, wherein:
When said 74LS164 chip was one, its serial input terminal received the instruction of said control module, and its parallel output terminal sends drive signal through said input/output interface to detected object according to this instruction;
When said 74LS164 chip was a plurality of cascade, elementary serial input terminal wherein received the instruction of said control module, and its parallel output terminal sends drive signal through said input/output interface to detected object according to this instruction;
The public input/output terminal of said CD4051 chip is communicated by letter with said control module with channel address gating end and is connected, and the analog quantity input end then receives frequency signal and the analog signals that said input/output interface is gathered.
9. electronic circuit product chips level maintenance Intelligent Measurement card according to claim 1 and 2 is characterized in that said communications interface unit is Transistor-Transistor Logic level and 232 level shifting circuits, through the conversion of Transistor-Transistor Logic level and 232 level, accomplishes serial communication.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203864892U CN202267953U (en) | 2011-10-12 | 2011-10-12 | Electronic circuit product chip-scale maintenance intelligent detection card |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011203864892U CN202267953U (en) | 2011-10-12 | 2011-10-12 | Electronic circuit product chip-scale maintenance intelligent detection card |
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| CN202267953U true CN202267953U (en) | 2012-06-06 |
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| CN2011203864892U Withdrawn - After Issue CN202267953U (en) | 2011-10-12 | 2011-10-12 | Electronic circuit product chip-scale maintenance intelligent detection card |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049357A (en) * | 2011-10-12 | 2013-04-17 | 中盈创信(北京)商贸有限公司 | Electronic circuit product chip scale maintenance intelligent detection card |
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2011
- 2011-10-12 CN CN2011203864892U patent/CN202267953U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049357A (en) * | 2011-10-12 | 2013-04-17 | 中盈创信(北京)商贸有限公司 | Electronic circuit product chip scale maintenance intelligent detection card |
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