CN209086711U - ADC application structure and electronic equipment - Google Patents

Abstract

The utility model discloses a kind of ADC application structure, it is characterized in that, including processor, ADC, multiway analog switch and several sampling units, each sampling unit forms measure loop through multiway analog switch, ADC and processor, and the processor controls the disconnection and closure of each measure loop by multiway analog switch.A kind of electronic equipment including above-mentioned ADC application structure is also disclosed in the utility model.The utility model has the beneficial effects that: enabling ADC to receive the analog signal of multiple sampling units to achieve the purpose that multi-way detecting by multiway analog switch, it is possible to reduce the quantity of ADC in electronic equipment reduces the hardware and software cost of electronic equipment.

Description

ADC application structure and electronic equipment

[technical field]

The utility model relates to technical field of electronic equipment more particularly to a kind of ADC application structure and electronic equipments.

[background technique]

ADC (Analog-to-Digital Converter, A/D converter or analog-digital converter), being used for will be true The analog signals such as temperature, pressure, sound or the image in the world are converted into the digital signal for being stored more easily, handling and emitting, It is widely used in various electronic equipments.For example, the components such as processor, charging unit of electronic equipment are in big function now Rate generates biggish heat when working long hours, and such as controls without heat management, can seriously reduce the performance of electronic equipment, very To burning out electronic equipment.Voltage signal is converted by thermistor for the temperature change of heat source device in the prior art to be transmitted to Reconvert is transmitted to processor at digital signal after ADC unit, and then processor is analyzed and processed according to digital signal with convenient Heat management, however, current electronic equipment or the limited ADC of setting only carries out heat management control to crucial heat source device, Increase the quantity of ADC or special ADC chip is added to carry out heat management control to all heat source devices, the former reduces The service life of electronic equipment and performance, the hardware and software cost of the latter's a larger increase electronic equipment.

In consideration of it, it is really necessary to provide a kind of ADC application structure and electronic equipment to overcome drawbacks described above.

[utility model content]

The purpose of the utility model is to provide a kind of ADC application structure and use the electronic equipment of the ADC application structure, purport Multiple sampling units are being detected by single pass ADC, reduce the hardware and software cost of electronic equipment.

To achieve the goals above, the utility model provides a kind of ADC application structure, including processor, ADC, multichannel mould Quasi- switch and several sampling units, each sampling unit forms measure loop through multiway analog switch, ADC and processor, described Processor controls the disconnection and closure of each measure loop by multiway analog switch.

In a preferred embodiment, the input terminal of the ADC is connected for receiving sampling with multiway analog switch The analog signal of unit, the output end of the ADC are connected so that the digital signal after conversion is issued processor with processor.

In a preferred embodiment, each measure loop under the control of the processor according to the preset time and Frequency successively disconnects and closure.

In a preferred embodiment, the quantity at least two of the sampling unit.

In a preferred embodiment, the multiway analog switch includes a control terminal, a connecting pin and several End is selected, the control terminal is wired to the processor, and the connecting pin is wired to the defeated of the ADC Enter end, each selection end is connected by conducting wire with a sampling unit, and the processor controls the company by the control terminal End is connect with a selection end conducting so that corresponding sampling unit to be connected with the input terminal of ADC.

In a preferred embodiment, the multiway analog switch is field effect transistor.

In a preferred embodiment, the quantity at the selection end is greater than or equal to the quantity of the sampling unit.

The utility model also provides a kind of electronic equipment including above-mentioned ADC application structure.

ADC application structure provided by the utility model enables ADC to receive multiple sampling units by multiway analog switch Analog signal to achieve the purpose that multi-way detecting, it is possible to reduce the quantity of ADC in electronic equipment reduces the soft or hard of electronic equipment Part cost.

To enable the above objects, features, and advantages of utility model to be clearer and more comprehensible, it is preferable that the utility model is cited below particularly Embodiment, and cooperate appended attached drawing, it is described in detail below.

[Detailed description of the invention]

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the structural schematic diagram of ADC application structure provided by the utility model.

Fig. 2 is the connection schematic diagram of multiway analog switch shown in Fig. 1 and ADC, processor and sampling unit.

[specific embodiment]

It is clear in order to be more clear the purpose of this utility model, technical solution and advantageous effects, below in conjunction with attached Figure and specific embodiment, the present invention will be further described in detail.It should be understood that described in this specification Specific embodiment is not intended to limit the utility model just for the sake of explaining the utility model.

Referring to Fig. 1, the utility model provides a kind of ADC application structure 100 and the electricity using the ADC application structure 100 Sub- equipment, the purpose of multi-channel sampling is realized with single channel ADC20, to reduce the quantity of ADC20 in electronic equipment, and then reduces electricity The cost of sub- equipment.

In the embodiments of the present invention, ADC application structure 100 includes processor 10, ADC20, multiway analog switch 30 and several sampling units 40, each sampling unit 40 detects back through the formation of multiway analog switch 30, ADC20 and processor 10 Road, and processor 10 controls the disconnection and closure of each measure loop by multiway analog switch 30.In the present embodiment, The input terminal 201 of ADC20 is connected with the analog signal for receiving sampling unit 40 with multiway analog switch 30, and ADC20's is defeated Outlet 202 is connected so that the digital signal after conversion is issued processor 10 with processor 10.

Embodiment according to the present utility model, it is to be understood that sampling unit 40 is used for the temperature of default sample objects Degree, pressure, sound or image information are converted into after analog signal and issue ADC20 through multiway analog switch 30, and pass through multichannel The analog signal that analog switch 30 enables ADC20 to receive multiple sampling units 40 can be subtracted with achieving the purpose that multi-way detecting The quantity of ADC20, reduces the hardware and software cost of electronic equipment in few electronic equipment.Such as: sampling unit 40 is to be set to sampling NTC thermistor (Negative Temperature Coefficient, negative tempperature coefficient thermistor) on object, The partial pressure condition conversion for the NTC thermistor that ADC20 will test is digital signal and issues processor 10, and processor 10 will count Word signals revivification at NTC thermistor state of temperature, with sample objects when the temperature is excessively high by frequency reducing, drop frame, drop electricity Stream, drop brightness etc. drop the mode of power to reduce the calorific value of sample objects, to achieve the purpose that cooling, avoid temperature higher Electronic component is damaged, to extend the service life of electronic equipment, meanwhile, multiway analog switch 30 can connect multiple samplings pair As also that is, can all heating devices be carried out with temperature detection, heat by an ADC20 in the electronic equipment of the utility model Management effect is good, and reduces the hardware and software cost of heat management.

Further, in one embodiment, the disconnection and closure of 10 time-division processing measure loop of processor, it is also that is, every A measure loop is successively disconnected according to preset time and frequency and closure under control of processor 10.In present embodiment In, processor 10 controls multiway analog switch 30 by software to disconnect or occlusion detection circuit.

Further, in one embodiment, the quantity at least two of sampling unit 40.

Further, in one embodiment, multiway analog switch 30 is field effect transistor, and operating rate is fast, conducting Resistance is low, and off-resistances are high.

As shown in Fig. 2, in a specific embodiment, multiway analog switch 30 includes control terminal 301, one connections If end 302 and dry separation end 303, control terminal 301 are wired to processor, connecting pin 302 is wired to The input terminal 201 of ADC20, each selection end 303 are connected by conducting wire with a sampling unit 40, and processor passes through control terminal 301 control connecting pins 302 are with selection end 303 conducting corresponding sampling unit analog information is transported to the defeated of ADC20 Enter end 201, it is to be understood that processor 10 can control connecting pin 302 according to preset temporal frequency by control terminal 301 Successively be connected with each control terminal 301.In the present embodiment, the quantity at end 303 is selected to be more than or equal to sampling unit 40 Quantity.

Further, in one embodiment, multiway analog switch 30 is field effect transistor, and operating rate is fast, conducting Resistance is low, and off-resistances are high.

In one embodiment, a kind of electronic equipment is provided, which includes providing in any of the above-described embodiment ADC application structure.

The utility model is not only in the description and the implementation described, therefore for the personnel of familiar field For other advantage and modification is easily implemented, therefore without departing substantially from universal defined by claim and equivalency range Spirit and scope in the case where, the utility model is not limited to specific details, representative equipment and shown here as with retouch The diagram example stated.

Claims (8)

1. a kind of ADC application structure, which is characterized in that including processor, ADC, multiway analog switch and several sampling units, often A sampling unit forms measure loop through multiway analog switch, ADC and processor, and the processor passes through multiway analog switch control Make the disconnection and closure of each measure loop.

2. ADC application structure according to claim 1, which is characterized in that the input terminal and multiway analog switch of the ADC It is connected with the analog signal for receiving sampling unit, the output end of the ADC is connected with the number after converting with processor Signal issues processor.

3. ADC application structure according to claim 1, which is characterized in that control of each measure loop in the processor It is successively disconnected and closure under system according to preset time and frequency.

4. ADC application structure according to claim 1, which is characterized in that the quantity at least two of the sampling unit.

5. ADC application structure according to claim 1, which is characterized in that the multiway analog switch includes a control If end, a connecting pin and dry separation end, the control terminal is wired to the processor, and the connecting pin is by leading Line is connected to the input terminal of the ADC, and each selection end is connected by conducting wire with a sampling unit, and the processor passes through institute It states control terminal and controls the connecting pin with a selection end conducting so that corresponding sampling unit to be connected with the input terminal of ADC.

6. ADC application structure according to claim 5, which is characterized in that the multiway analog switch is field effect transistor Pipe.

7. ADC application structure according to claim 6, which is characterized in that the quantity at the selection end is greater than or equal to institute State the quantity of sampling unit.

8. a kind of electronic equipment, which is characterized in that including ADC application structure according to any one of claim 1 to 7.