CN215005736U - Chip detection circuit and equipment - Google Patents
Chip detection circuit and equipment Download PDFInfo
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- CN215005736U CN215005736U CN202120441402.0U CN202120441402U CN215005736U CN 215005736 U CN215005736 U CN 215005736U CN 202120441402 U CN202120441402 U CN 202120441402U CN 215005736 U CN215005736 U CN 215005736U
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- 238000010586 diagram Methods 0.000 description 5
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Abstract
The utility model discloses a chip detection circuitry and equipment, include the outside adjustable electric capacity of being connected with the switch circuit in the chip, the gear that awaits measuring based on compensation electric capacity can adjust the appearance value of outside adjustable electric capacity to make control module confirm whether compensation electric capacity can normally work at current gear based on received electric capacity data in predetermineeing the within range, realize detecting each gear of compensation electric capacity in the chip based on the different appearance values of outside adjustable electric capacity promptly, and judge that compensation electric capacity can normally work at each gear.
Description
Technical Field
The utility model relates to the field of electronics, especially, relate to a chip detection circuitry and equipment.
Background
When the touch chip in the prior art needs to be detected before being put into use, and when the compensation capacitor in the touch chip is detected, the detection circuit in the prior art is shown in fig. 1, fig. 1 is a schematic structural diagram of the detection circuit in the prior art, one end of an external capacitor C1 is grounded, the other end of the external capacitor C1 is connected with a first end of the compensation capacitor 101, a negative input end of an amplifier 103 and a first end of a feedback capacitor 102 through a switch circuit S1 to a switch circuit Sn +1, a second end of the compensation capacitor 101 is grounded, a positive input end of the amplifier 103 is connected with a reference voltage output device 104, an output end of the amplifier is connected with a second end of the feedback capacitor 102 and an input end of an analog-to-digital converter 105, when the compensation capacitor 101 is detected, a capacitance value of the compensation capacitor 101 is adjusted to a preset capacitance value based on a capacitance value of the external capacitor C1 and a capacitance value of the feedback capacitor 102, the analog-to-digital converter 105 collects an output voltage of the amplifier 103, the control module 106, i.e., an MCU (micro controller Unit) shown in the figure, processes the voltage data collected by the analog-to-digital converter 105 to generate capacitance data, and determines whether the compensation capacitor 101 can normally operate at a preset capacitance value by determining whether the capacitance data is within a preset range. Although several gears can be adjusted upwards or downwards based on the preset capacitance value of the compensation capacitor 101 when the external capacitor C1 is connected, so as to determine whether the capacitance data output by the control module 106 is within the expected preset range, however, the gears of the compensation capacitor 101 are more, if the multiple gears of the compensation capacitor are adjusted only when the external capacitor C1 is connected, the amplifier 103 can be operated in a saturation region, and even if the gears of the compensation capacitor 101 are adjusted, the analog-to-digital converter 105 cannot acquire the change output by the amplifier 103, and thus, the normal operation of the touch screen after the touch chip is put into use cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a chip detection circuitry and equipment, realize detecting each gear of compensation electric capacity in the chip based on the different appearance value of outside adjustable electric capacity, and judge whether compensation electric capacity can normally work at each gear.
In order to solve the technical problem, the utility model provides a chip detection circuitry, the chip includes switch circuit, compensation capacitor, adc and control module, detection circuitry includes:
the first end of the external adjustable capacitor is grounded, and the second end of the external adjustable capacitor is connected with the switch circuit in the chip and used for adjusting the capacitance value of the external adjustable capacitor based on the gear to be detected of the compensation capacitor so as to detect each gear of the compensation capacitor in the chip;
the control module is used for generating corresponding capacitance data based on the voltage acquired by the analog-to-digital converter and determining whether the compensation capacitor can normally work in the current gear based on the judgment of whether the capacitance data is in a preset range;
the preset range corresponds to the current capacitance value of the external adjustable capacitor and the current gear of the compensation capacitor.
Preferably, the chip comprises a plurality of said switching circuits;
the external tunable capacitance includes:
the first ends are grounded, the second ends are respectively connected with a plurality of external capacitors with different capacitance values of the switch circuits of the chip, and the external capacitors are used for detecting each gear of the compensation capacitor in the chip based on the conduction state of each switch circuit.
Preferably, a control signal output end of the control module is connected to a control end of the compensation capacitor, and is further configured to adjust a gear of the compensation capacitor based on a current capacitance value of the external adjustable capacitor.
Preferably, the method further comprises the following steps:
and the prompt module is connected with the output end of the control module and is used for correspondingly prompting the user based on the judgment result of the control module.
Preferably, the prompting module is a voice prompting module and/or a display prompting module.
Preferably, the sound prompt module is a buzzer.
Preferably, the display prompt module is an indicator lamp.
The utility model also provides a chip detection equipment, include as above-mentioned chip detection circuitry.
The application provides a chip detection circuit and equipment, including the external adjustable capacitor who is connected with the switch circuit in the chip, gear to be measured based on compensation capacitor can adjust the appearance value of external adjustable capacitor to make control module confirm whether compensation capacitor can normally work at current gear based on received capacitance data within the predetermined range, realize detecting each gear of compensation capacitor in the chip based on the different appearance values of external adjustable capacitor promptly, and judge whether compensation capacitor can normally work at each gear.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the prior art and the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a chip detection circuit in the prior art;
fig. 2 is a schematic structural diagram of a chip detection circuit provided by the present invention;
fig. 3 is a schematic structural diagram of the chip detection circuit provided by the present invention.
Detailed Description
The core of the utility model is to provide a chip detection circuitry, realize detecting each gear of compensation electric capacity in the chip based on the different appearance value of outside adjustable electric capacity to judge whether compensation electric capacity can normally work in each gear.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a chip detection circuit according to the present invention.
The chip 2 includes a switch circuit, a compensation capacitor 101, an analog-to-digital converter 105 and a control module 106, and the detection circuit includes:
the external adjustable capacitor 1 is grounded at a first end, and connected with a switch circuit in the chip 2 at a second end, and is used for adjusting the capacitance value of the external adjustable capacitor based on the gear to be detected of the compensation capacitor 101 so as to detect each gear of the compensation capacitor 101 in the chip 2;
the control module 106 is configured to generate corresponding capacitance data based on the voltage acquired by the analog-to-digital converter 105, and determine whether the compensation capacitor 101 can normally operate in the current gear based on a judgment whether the capacitance data is within a preset range;
the preset range corresponds to the current capacitance value of the external adjustable capacitor 1 and the current gear of the compensation capacitor 101.
The chip in the prior art is used for detecting the capacitance change of the touch screen, so as to realize the normal use of the touch screen, and needs to detect the capacitance change before the touch screen is put into use, the principle of the chip detection circuit is that the capacitance value of the compensation capacitor 101 is adjusted to a corresponding capacitance value based on the capacitance value of the external load capacitor C1 and the capacitance value of the feedback capacitor 102, the compensation capacitor 101 transmits the charge of the compensation capacitor 101 to the external load capacitor C1 and the feedback capacitor 102 inside the chip 2, because inside the chip 2, one end of the compensation capacitor 101 is connected with one end of the feedback capacitor 102 and the negative input end of the amplifier 103, the input of the reference voltage generated by the reference voltage output device 104 exists at the positive input end of the amplifier 103, therefore, the amplifier 103 can convert the charge change of the negative input end into the voltage change, the analog-to-digital converter 105 collects the voltage output by the amplifier 103, the control module 106 processes the voltage collected by the analog-to-digital converter 105 and generates capacitance data, so that the control module 106 determines whether the capacitance data output by itself is within a preset range, if the capacitance data output by itself is within the preset range, it indicates that the compensation capacitor 101 is at the capacitance value, that is, the gear can normally operate, if the capacitance data output by itself is not within the preset range, it indicates that the compensation capacitor 101 is at the capacitance value, that is, the gear cannot normally operate, furthermore, the compensation capacitor 101 can be properly adjusted upwards or downwards by several gears based on the current gear, however, if too many gears are adjusted, the amplifier 103 can be operated in a saturated state, and it cannot be determined that the compensation capacitor 101 can normally operate at the current gear, and because the touch screen is touched and not touched, the capacitance values of its internal operations are different, for example, when the touch screen is touched, the capacitance values of its internal operations may be larger, when the touch panel is not touched, the capacitance value of the capacitor working inside the touch panel may be small, and if the compensation capacitor 101 cannot work normally in some gears, the touch panel may not work normally, so that the external load capacitor C1 with only one fixed capacitance value cannot detect all the gears of the compensation capacitor 101, and normal use of the chip 2 cannot be guaranteed.
In order to solve the technical problem, the external adjustable capacitor 1 is arranged in the application, the capacitance value of the capacitor is adjustable, and the capacitance value of the external adjustable capacitor 1 can be adjusted based on all gears of the compensation capacitor 101, so that a plurality of gears of the compensation capacitor 101 can be detected, the normal use of the compensation capacitor 101 is ensured, and the normal use of the chip 2 is also ensured.
The external adjustable capacitor 1 can be a capacitor with a plurality of gears, the gears of the external adjustable capacitor 1 are set based on the gears of the compensation capacitor 101, and the capacitance value of the external adjustable capacitor 1 can be adjusted by adjusting the gears of the external adjustable capacitor; outside adjustable electric capacity 1 still can be for a plurality of outside electric capacities, please refer to fig. 3, fig. 3 does the utility model provides a specific structural schematic of chip detection circuit, the appearance value of each outside electric capacity is different, and each appearance value of each outside electric capacity is confirmed based on each gear of compensation electric capacity 101, each outside electric capacity timesharing is connected with the inside switch circuit of chip 2, through the control of switching on and turn-off to switch among the switch circuit, the change to outside adjustable electric capacity 1's appearance value is realized, every switch can switch on alone in proper order, also can switch on simultaneously for arbitrary a plurality of switches at every turn, specifically the gear based on compensation electric capacity 101 sets for. The specific form of the external adjustable capacitor 1 and the number of the gears or the external capacitors are not limited, and all the gears of the compensation capacitor 101 can be detected.
In addition, the preset range in the present application is determined based on the current capacitance value of the external adjustable capacitor 1, and the compensation capacitor 101 may be properly shifted up or down, and if the capacitance data output by the control module 106 after adjustment is within the preset range, it may be determined that the compensation capacitor 101 can normally work in these several shifts, but when the shift of the compensation capacitor 101 is adjusted, it is only required to ensure that the amplifier 103 does not work in a saturated state.
It should be noted that the control module 106 in this embodiment is an MCU (integrated circuit) of an IC (integrated circuit), and in other embodiments, may be an off-chip single chip microcomputer or a PC (Personal Computer).
In summary, the capacitance value of the external adjustable capacitor 1 can be adjusted based on the gear to be measured of the compensation capacitor 101, so that the control module 106 determines whether the compensation capacitor 101 can normally work in the current gear based on whether the received capacitance data is within the preset range, that is, the detection of each gear of the compensation capacitor 101 in the chip is realized based on the different capacitance values of the external adjustable capacitor 1, and whether the compensation capacitor 101 can normally work in each gear is judged.
On the basis of the above-described embodiment:
as a preferred embodiment, the chip 2 includes a plurality of switching circuits;
the external tunable capacitor 1 includes:
the first ends are all grounded, and the second ends are respectively connected with a plurality of switch circuits of the chip 2 and a plurality of external capacitors with different capacitance values, so that the detection of each gear of the compensation capacitor 101 in the chip 2 is performed based on the conduction state of each switch circuit.
In this embodiment, the external adjustable capacitor 1 may be a plurality of external capacitors, that is, C1 to Cn +1 in fig. 3, the capacitance values of the external capacitors are different, and the capacitance values of the external capacitors are determined based on the respective shift positions of the compensation capacitor 101, and the external capacitors are respectively connected to a plurality of switch circuits, that is, switch circuits S1 to Sn +1, inside the chip 2, and the capacitance values of the external capacitors are changed by controlling on and off of switches in the switch circuits.
Of course, the number of the external capacitors is not limited in the present application, and each gear of the compensation capacitor 101 may be detected.
As a preferred embodiment, a control signal output end of the control module 106 is connected to a control end of the compensation capacitor 101, and is further configured to adjust the gear of the compensation capacitor 101 based on a current capacity value of the external adjustable capacitor 1. The control module in this embodiment can also adjust the gear of the compensation capacitor 101, so as to facilitate detection of each gear of the compensation capacitor 101.
As a preferred embodiment, the method further comprises the following steps:
and the prompt module is connected with the output end of the control module 106 and is used for correspondingly prompting the user based on the judgment result of the control module 106.
In this embodiment, the prompt module is added in consideration that the control module 106 needs to inform the staff in time to process when detecting that the compensation capacitor 101 cannot work normally in the current gear. After the control module 106 detects that the compensation capacitor 101 cannot work normally in the current gear, the control prompt module is controlled to send a prompt to prompt a worker to process the chip to be tested, namely the chip 2.
In a preferred embodiment, the prompting module is a voice prompting module and/or a display prompting module.
In this embodiment, the prompt module includes a voice prompt module or a display prompt module. The voice prompt module can send out voice prompt and the display prompt module can send out light prompt.
Specifically, the prompting module may only include a voice prompting module or a display prompting module, and the prompting module may also include both the voice prompting module and the display prompting module. When the prompt module can simultaneously include the sound prompt module and the display prompt module, in a noisy working environment, a worker cannot hear the sound prompt, but can know that the compensation capacitor 101 detected by the control module 106 cannot normally work at the current gear through the display prompt module; when the display prompt module cannot be seen in the visual field of the worker, the sound prompt module can learn that the compensation capacitor 101 detected by the control module 106 cannot normally work in the current gear, so that the chip to be tested can be processed more quickly.
As a preferred embodiment, the sound prompt module is a buzzer.
In this embodiment, choose buzzer for use as sound prompt module, the suggestion of sound can be realized to buzzer.
In addition, the buzzer has the characteristics of low cost and high sensitivity.
As a preferred embodiment, the display prompt module is an indicator light.
In this embodiment, select for use the pilot lamp as showing the suggestion module, the suggestion of pilot lamp ability realization light.
In addition, the light-emitting diode has the advantage of low cost, and can share one control port with the buzzer.
Of course, the display prompt module in the application is not limited to select the indicator light, and can also select the light emitting diode.
The utility model also provides a chip detection equipment, include as above-mentioned chip detection circuitry.
The utility model provides a chip detection equipment has the same beneficial effect with above-mentioned chip detection circuit, and this application is no longer repeated here.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A chip detection circuit, characterized in that, the chip includes switching circuit, compensation electric capacity, analog-to-digital converter and control module, the detection circuit includes:
the first end of the external adjustable capacitor is grounded, and the second end of the external adjustable capacitor is connected with the switch circuit in the chip and used for adjusting the capacitance value of the external adjustable capacitor based on the gear to be detected of the compensation capacitor so as to detect each gear of the compensation capacitor in the chip;
the control module is used for generating corresponding capacitance data based on the voltage acquired by the analog-to-digital converter and determining whether the compensation capacitor can normally work in the current gear based on the judgment of whether the capacitance data is in a preset range;
the preset range corresponds to the current capacitance value of the external adjustable capacitor and the current gear of the compensation capacitor.
2. The chip detection circuit of claim 1, wherein the chip includes a plurality of the switch circuits;
the external tunable capacitance includes:
the first ends are grounded, the second ends are respectively connected with a plurality of external capacitors with different capacitance values of the switch circuits of the chip, and the external capacitors are used for detecting each gear of the compensation capacitor in the chip based on the conduction state of each switch circuit.
3. The chip detection circuit according to claim 1, wherein a control signal output terminal of the control module is connected to a control terminal of the compensation capacitor, and further configured to adjust a shift position of the compensation capacitor based on a current capacitance value of the external adjustable capacitor.
4. The chip detection circuit of claim 1, further comprising:
and the prompt module is connected with the output end of the control module and is used for correspondingly prompting the user based on the judgment result of the control module.
5. The chip detection circuit according to claim 4, wherein the prompt module is a voice prompt module and/or a display prompt module.
6. The chip detection circuit according to claim 5, wherein the sound prompt module is a buzzer.
7. The chip detection circuit according to claim 5, wherein the display prompting module is an indicator light.
8. A chip detection apparatus comprising the chip detection circuit according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120441402.0U CN215005736U (en) | 2021-03-01 | 2021-03-01 | Chip detection circuit and equipment |
| TW110209265U TWM622831U (en) | 2021-03-01 | 2021-08-05 | Chip detection circuit and an apparatus including the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120441402.0U CN215005736U (en) | 2021-03-01 | 2021-03-01 | Chip detection circuit and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215005736U true CN215005736U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120441402.0U Active CN215005736U (en) | 2021-03-01 | 2021-03-01 | Chip detection circuit and equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN215005736U (en) |
| TW (1) | TWM622831U (en) |
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2021
- 2021-03-01 CN CN202120441402.0U patent/CN215005736U/en active Active
- 2021-08-05 TW TW110209265U patent/TWM622831U/en unknown
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| Publication number | Publication date |
|---|---|
| TWM622831U (en) | 2022-02-01 |
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