CN203231830U - PCB temperature test circuit - Google Patents
PCB temperature test circuit Download PDFInfo
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- CN203231830U CN203231830U CN201320239476.1U CN201320239476U CN203231830U CN 203231830 U CN203231830 U CN 203231830U CN 201320239476 U CN201320239476 U CN 201320239476U CN 203231830 U CN203231830 U CN 203231830U
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Abstract
The utility model discloses a PCB temperature test circuit which comprises a temperature induction circuit, a processor, an analog-to-digital conversion circuit and a display driver circuit, wherein the temperature induction circuit is contacted with each test point of a PCB, an output terminal of the temperature induction circuit is connected with an input terminal of the analog-to-digital conversion circuit, a control terminal of the temperature induction circuit is connected with the processor, and a temperature signal of each test point is detected by the temperature induction circuit controlled by the processor; an output terminal of the analog-to-digital conversion circuit is connected with the processor, a control terminal of the analog-to-digital conversion circuit is connected with the processor, and the temperature signal detected by the temperature induction circuit is converted from analog to digital controlled by the processor and is output to the processor; and the processor is connected with the display driver circuit and used for testing and analyzing the temperature signal output from the analog-to-digital conversion circuit and outputting a test result to the display driver circuit to display. The PCB temperature test circuit has the advantages that automatic detection of the PCB operating temperature is achieved, and detection efficiency of the PCB operating temperature is improved.
Description
Technical field
The utility model relates to the working temperature field tests of pcb board, relates in particular to a kind of temperature test circuit of pcb board.
Background technology
Measurement jig is a kind of some operations that are used for testing in semi-manufacture/finished product or the production link, judges with this whether measurand has reached the mechanical assist device of initial designs person's purpose.For example, in the production run of pcb board, need to consider temperature in the pcb board course of work to the influence of pcb board, thereby need test the working temperature of pcb board.Present temperature test is by manually testing complex operation step, and erroneous judgement easily.
The utility model content
Fundamental purpose of the present utility model provides a kind of temperature test circuit of pcb board, is intended to realize the automatic detection of pcb board working temperature, has also improved the working temperature detection efficiency of pcb board simultaneously.
For reaching above purpose, the temperature test circuit of a kind of pcb board that the utility model provides comprises: temperature sense circuit, processor, analog to digital conversion circuit and display driver circuit; Wherein,
Described temperature sense circuit is corresponding to be connected with each check point of pcb board, the output terminal of described temperature sensing circuit is connected with the input end of analog to digital conversion circuit, the control end of described temperature sense circuit is connected with processor, carries out the detection of the temperature signal of each check point according to the control of processor;
The output terminal of analog-digital conversion circuit as described is connected with processor, and the control end of analog-digital conversion circuit as described is connected with processor, according to the control of processor, after the temperature signal that described temperature sense circuit is detected carries out analog to digital conversion, exports processor to;
Described processor is connected with display driver circuit, and the temperature signal of analog to digital conversion circuit output is carried out test analysis, and exports test result to display driver circuit and show.
Preferably, described temperature sense circuit comprises a plurality of temperature sensors, and the output terminal of this temperature sensor all is connected to processor by a bus.
Preferably, described temperature sense circuit is an integrated multi-point temp sensor circuit board.
Preferably, described processor and analog to digital conversion circuit are an integrated special digital processing single chip circuit board.
Preferably, also comprise the data transmission interface circuit, with data transmission that the temperature test circuit is tested to external device (ED).
The utility model embodiment is by temperature sense circuit, processor and analog to digital conversion circuit, realized the automatic detection of pcb board working temperature, and the temperature sense circuit can detect the working temperature of a plurality of check points, improved the efficient that the pcb board working temperature detects.
Description of drawings
Fig. 1 is the high-level schematic functional block diagram of temperature test circuit one embodiment of the utility model pcb board.
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Further specify the technical solution of the utility model below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
With reference to Fig. 1, temperature test circuit one embodiment of a kind of pcb board of the utility model is proposed.The temperature test circuit 100 of the pcb board of this embodiment comprises: temperature sense circuit 10, processor 20 and analog to digital conversion circuit 30 and display driver circuit 40; Wherein,
Described temperature sense circuit 10 correspondences contact with each check point of pcb board, the output terminal of described temperature sense circuit 10 is connected with the input end of analog to digital conversion circuit 30, the control end of described temperature sense circuit 10 is connected with processor 20, carries out the temperature detection of each check point according to the control of processor 20.This temperature sense circuit 10 comprises a plurality of temperature inductors, and all temperature inductors all are connected to processor 10 by a bus.Said temperature sensor circuit 10 is an integrated temperature inductor circuit plate, can test nearly 128 check points.
The output terminal of analog-digital conversion circuit as described 30 is connected with processor 20, the control end of analog-digital conversion circuit as described 30 is connected with processor 20, according to the control of processor 20, after the temperature signal that described temperature sense circuit 10 is detected carries out analog to digital conversion, export processor 20 to.Detect the working temperature of check point when temperature sense circuit 10 after, it is inputed to analog to digital conversion circuit 30,30 control signals according to processor 20 of analog to digital conversion circuit are carried out analog to digital conversion, and export the result of its conversion to processor 20.In the present embodiment, analog to digital conversion circuit 30 is an integrated chip, and the model of this chip is AD7715, and the model of processor 20 is SIC89C51.Described processor 20 is an integrated special digital processing single chip circuit board with analog to digital conversion circuit 30.By the parameter of revising in the processor 20 quantity of required measurement temperature and the temperature range of locking can be set, thereby can strictly control product quality, reduce hardware cost.
Described processor 20 is connected with display driver circuit 40, and the temperature signal of analog to digital conversion circuit 30 output is carried out test analysis, and exports test result to display driver circuit 40 and show.After processor 20 receives the temperature signal of analog to digital conversion circuit 30 output, can judge this temperature value whether in normal range, and export judged result to display driver circuit 40, to be shown to the user.Be specially, processor 20 arranges a Compare Logic circuit, compares for the magnitude of voltage after the comparison analog to digital conversion and the magnitude of voltage of normal range, to produce comparative result (for example, 0 or 1 electric signal).Simultaneously, this temperature signal also exports display driver circuit 40 to and shows.
The utility model embodiment is by the ball bearing made using of temperature sense circuit 10, processor 20 and analog to digital conversion circuit 30, realized the automatic detection of pcb board temperature, and temperature sense circuit 10 can detect the temperature of a plurality of check points, improved the efficient that the pcb board working temperature detects.
The said temperature test circuit also comprises test data transmission interface circuit 50, and the data transmission that is used for the temperature test circuit is tested is to external device (ED).
The above only is preferred embodiment of the present utility model; be not so limit its claim; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (5)
1. the temperature test circuit of a pcb board is characterized in that, comprising: temperature sense circuit, processor, analog to digital conversion circuit and display driver circuit; Wherein,
Described temperature sense circuit is corresponding to be connected with each check point of pcb board, the output terminal of described temperature sensing circuit is connected with the input end of analog to digital conversion circuit, the control end of described temperature sense circuit is connected with processor, carries out the detection of the temperature signal of each check point according to the control of processor;
The output terminal of analog-digital conversion circuit as described is connected with processor, and the control end of analog-digital conversion circuit as described is connected with processor, according to the control of processor, after the temperature signal that described temperature sense circuit is detected carries out analog to digital conversion, exports processor to;
Described processor is connected with display driver circuit, and the temperature signal of analog to digital conversion circuit output is carried out test analysis, and exports test result to display driver circuit and show.
2. the temperature test circuit of pcb board according to claim 1 is characterized in that, described temperature sense circuit comprises a plurality of temperature sensors, and the output terminal of this temperature sensor all is connected to processor by a bus.
3. the temperature test circuit of pcb board according to claim 2 is characterized in that, described temperature sense circuit is an integrated multi-point temp sensor circuit board.
4. the temperature test circuit of pcb board according to claim 1 is characterized in that, described processor and analog to digital conversion circuit are an integrated special digital processing single chip circuit board.
5. the temperature test circuit of pcb board according to claim 1 is characterized in that, also comprises the data transmission interface circuit, with data transmission that the temperature test circuit is tested to external device (ED).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320239476.1U CN203231830U (en) | 2013-05-06 | 2013-05-06 | PCB temperature test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320239476.1U CN203231830U (en) | 2013-05-06 | 2013-05-06 | PCB temperature test circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203231830U true CN203231830U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320239476.1U Expired - Fee Related CN203231830U (en) | 2013-05-06 | 2013-05-06 | PCB temperature test circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203231830U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568198A (en) * | 2014-12-31 | 2015-04-29 | 广东工业大学 | Multilayer-PCB micro-hole drilling temperature measuring device and method |
| CN113125043A (en) * | 2021-04-26 | 2021-07-16 | 北京乐研科技有限公司 | High-precision thermal gradient temperature detection circuit, method and device |
-
2013
- 2013-05-06 CN CN201320239476.1U patent/CN203231830U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568198A (en) * | 2014-12-31 | 2015-04-29 | 广东工业大学 | Multilayer-PCB micro-hole drilling temperature measuring device and method |
| CN104568198B (en) * | 2014-12-31 | 2017-11-14 | 广东工业大学 | A kind of multi-layer PCB Micro-role Drilling temperature measuring equipment and method |
| CN113125043A (en) * | 2021-04-26 | 2021-07-16 | 北京乐研科技有限公司 | High-precision thermal gradient temperature detection circuit, method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20200506 |