CN201904769U - Quick switching device for sampling circuit gears - Google Patents

Quick switching device for sampling circuit gears Download PDF

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Publication number
CN201904769U
CN201904769U CN2010205160659U CN201020516065U CN201904769U CN 201904769 U CN201904769 U CN 201904769U CN 2010205160659 U CN2010205160659 U CN 2010205160659U CN 201020516065 U CN201020516065 U CN 201020516065U CN 201904769 U CN201904769 U CN 201904769U
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switching
sampling
module
signal
load
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CN2010205160659U
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文祚明
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文祚明
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Abstract

The utility model relates to a quick switching device for sampling circuit gears, the core of which is to separate a loading switching from a sampling signal switching, so as to reduce the influence of a loading switcher on a sampling signal. The technical scheme is that the quick switching device for the sampling circuit gears comprises a signal sampling module, a loading switching module, a sampling-signal switching module, a sampling-signal processing module and a gear switching control module, wherein the signal sampling module is used for sampling signals; the loading switching module is used for switching the connection between the sampling module and the loading; the sampling-signal switching module is connected to the sampling signals and the sampling-signal processing module; the sampling-signal processing module is used for processing and judging the sampled signals; the gears switching control module is used for controlling the switching operation between the loading switching module and the sampling-signal switching module; and the loading switching module is separated from the sampling-signal switching module. The quick switching device for sampling circuit gears has the beneficial effects that the problems of the measurement error caused by inner resistance of the switch and the gear switching speed influenced by the executing speed of the switch are solved.

Description

取样电路档位快速切换装置 Sampling circuit means fast switching gear

技术领域 FIELD

[0001] 本实用新型涉及一种取样电路档位的快速切换装置,其核心是将负载切换和采样信号切换分离,由此降低负载切换器件对采样信号带来的影响,进而提高取样电路档位切换速度和精度的一种取样电路档位切换装置。 [0001] The present invention relates to a fast circuit switching apparatus sampling range, which is a core sampling signal switching load switching and separation, thereby reducing the influence of load switching device to bring the sampled signal, thereby improving the gear sampling circuit a switching speed and accuracy of the sampling circuit switching gear means.

背景技术 Background technique

[0002] 在信号处理和测量领域,常常需要对信号进行采样,并进一步对采样信号进行处理,以便通过对采样信号的测量,来计算被测对象的工作参数,例如:我们需要测试某一个电路的电流消耗,所采取的方案就是在电路回路中串联一个取样电阻,通过测量取样电阻两端的电压,然后通过欧姆定律来计算被测电路的电流,这个电阻就被称为是取样电阻。 [0002] In the signal processing and measurement field, it is often necessary to sample the signal, and the sampled signal is further processed by measurement of the sampled signal so as to calculate the operating parameters of the measured object, for example: we need to test a particular circuit current consumption, the program is taken in a series circuit loop sampling resistor by measuring the voltage sampled across the resistor, the current is then calculated by Ohm's law circuit under test, the resistor is called a sampling resistor. 欧姆定律的内容是: Content Ohm's law is:

[0003] 电流=电压/电阻 [0003] Current = Voltage / Resistance

[0004] 串联的电阻两端会产生压降,所以,串联的电阻的电阻值必须被精心选择,过大的取样电阻会导致压降太大,影响被测电路的工作状态,过小的取样电阻会导致取样信号过小,影响测试精度。 [0004] The ends of the resistor in series will produce a pressure drop, therefore, the series resistance of the resistor must be carefully selected, the sampling resistor is too large will lead to too much pressure drop, the influence of the operating state of the circuit under test, the sample is too small resistance is too small will lead to a sampling signal, affect test accuracy.

[0005] 所以,当需要宽范围测量的时候,一般都是将测量范围分成几档,然后不同的档位采用不同的取样电阻,在测量过程中,通过切换合适的取样电阻来获取最佳的测量结果。 [0005] Therefore, when it is necessary, when the wide range measurement, usually the measuring range is divided into several files and different gears of different sampling resistor, during the measurement, to obtain the optimum by appropriate switching of the sampling resistor measurement results. 图1和图2描述了传统的高端电流采样档位切换电路:其中,图1是采样电阻并联连接的传统电流采样档位切换电路,图2是采样电阻串联的传统电流采样档位切换电路。 Figures 1 and 2 described in the conventional high-range switching current sampling circuit: wherein, Figure 1 is a conventional gear current sampling resistor connected in parallel with the sampling switching circuit, FIG. 2 is a conventional current sampling resistor connected in series switching circuit sampling range.

[0006] 在图1和2,中,S1、S2为档位切换开关,Rsesl和Rses2为取样电阻,RL为负载电阻,工作时通过Si、S2的切换,选择合适的档位,即选择合适的取样电阻,来实现档位切换的目的。 [0006] In Figures 1 and 2, in, S1, S2 of the switch gear, Rsesl Rses2 and a sampling resistor, RL is the load resistance, by switching Si, S2 of operation, select the appropriate range, i.e., to select the appropriate the sampling resistor, to achieve the purpose of switching the gear.

[0007] 这种电路有一个特点,即切换的执行器件S1/S2串联在负载回路中,同时担负取样信号和负载的切换,由于执行器件也存在接触电阻,在精密测量或大电流测量的场合下, S1/S2对测量的结果影响较大。 [0007] This circuit has a feature that the switching device performs the S1 / S2 connected in series in the load circuit, while switching the sampling signals and the load responsible, since the implementation of the device there is the contact resistance, in the case where precision measurement or current measurement next, S1 / S2 greater impact on the result of the measurement.

[0008] 为了解决这个问题,通常采用接触阻抗小的器件,例如继电器来作为档位切换器件,但是因为继电器的动作时间很慢,一般的继电器吸合或释放时间在零点几到几个毫秒, 这样的切换速度,在现代高速测量的领域里是不可接受的 [0008] In order to solve this problem, usually a small contact resistance device, such as a relay as the switching gear device, but because the relay operation time is very slow, general relay or the release time is a few tenths to a few milliseconds, such switching speeds, in modern high-speed measurements in the field is unacceptable

[0009] 由于元器件技术的进步,场效应晶体管,即MOSFET已经可以做到很低的导通电阻,例如市场可以购得的ME2303型场效应管,在VGS = 4. 5V时,RDS可以低至85毫欧姆, 由于场效应晶体管的切换速度极快,所以完全有可能用场效应晶体管取代S1/S2,达到档位快速切换的目的。 When [0009] Due to advances in component technologies, field effect transistors, the MOSFET can already be very low on-resistance, for example, commercially available ME2303 type field effect transistor, the VGS = 4. 5V, RDS can be lower to 85 milliohms, since the field effect transistor switching speed is extremely fast, it is entirely possible to replace S1 / S2 field effect transistor, the purpose of fast switching gear. 图3和图4为这个解决方案的图示;其中,图3是取样电阻并联连接的用MOSFET作为档位切换开关器件的电流采样档位切换电路;图4是取样电阻串联连接的用MOSFET作为档位切换开关器件的电流采样档位切换电路。 3 and FIG. 4 is a graphical representation of the solution; wherein FIG. 3 is a sampling resistor connected in parallel with the current sensing MOSFET as the switching gear shift switching device switching circuit; FIG. 4 is a sampling resistor connected in series with a MOSFET range switching device switching a switching circuit current sampling range.

[0010] 在现代高精度测量应用中,要求极高的测试精度和测试稳定性,上述的方案仍然不能满足要求,因为以下原因:[0011] 1、场效应晶体管的导通内阻仍然有数十毫欧姆,这在精密测量应用中是不被允许的; [0010] In modern high-precision measurement applications require high precision and stability tests, the above-described embodiment is still not satisfactory because of the following reasons: [0011] 1, on-resistance of the field effect transistor still several ten milli-ohms, which is not allowed in the precision measurement applications;

[0012] 2、场效应晶体管的导通内阻具有离散性,同一型号、同一批次生产的器件,其导通内阻都不同,这对于测量应用增加了器件误差; [0012] 2, on-resistance of the field effect transistor having discrete, same model, same batch produced device, which is different on-resistance, which increases the device for the error measurement applications;

[0013] 3、场效应晶体管的导通内阻随着通过电流、电压的变化而变化,这将带来明显的 [0013] 3, a field effect transistor on-resistance by varying the current as the voltage changes, which will bring significant

测量误差。 Measurement error.

[0014] 鉴于上述原因,实用新型人设计了下述技术方案。 [0014] For these reasons, the invention is designed for people following technical scheme. 实用新型内容 SUMMARY

[0015] 本实用新型要解决的技术问题是为了克服上述现有技术开关器件内阻带来的测量误差和开关器件的执行速度影响档位切换速度的缺陷,提供一种高精度和高速度的取样电路档位的快速切换装置。 [0015] The present invention Problem to be solved is to overcome the execution speed switching devices of the prior art resistance measurement error caused by the influence of defects and a switching device switching speed shift, to provide a high precision and high speed sampling circuit means fast switching gear.

[0016] 为解决上述技术问题,采用如下技术方案: [0016] To solve the above problems, the following technical solution:

[0017] 取样电路档位快速切换装置,包括信号采样模块、负载切换模块、采样信号切换模块、采样信号处理模块和档位切换控制模块;所述信号采样模块采集信号,所述负载切换模块切换采样模块和负载之间的连接,所述采样信号切换模块连接采样信号和采样信号处理模块,所述采样信号处理模块对采样到的信号进行处理和判断,所述档位切换控制模块控制负载切换模块和采样信号切换模块的切换动作,所述负载切换模块和采样信号切换模块分离。 [0017] The sampling circuit shift fast switching means includes a signal sampling module, load switching module, the switching module sampling signal, a sampling signal processing module and gear switching control module; said signal sampling module signal acquisition, the load switching module switches the connection between the sampling module and the load switching module connected to said sampled signal and the sampling signal sampled signal processing module, the sampling signal processing module for processing the signal samples and the determination, the switching control module controls the shift load switching module and the switching operation of the sampling signal switching module, the switching module and the load switching module sampling signal separation.

[0018] 所述负载切换模块与其采样信号处理回路无连接;所述信号采样模块内部有多个采样元件;所述采样信号切换模块内部有多个信号切换元件;所述负载切换模块内部有多个负载切换元件;所述档位切换控制信号模块内部有多个控制信号。 [0018] The load switching module and its sampling signal processing circuit connectionless; inside the sampling module with a plurality of signal sampling element; said sampling signal switching module a plurality of internal signal switching elements; how the load switching module internal a load switching element; the gear switching control signal module has a plurality of internal control signals.

[0019] 所述档位切换控制信号模块中,其档位切换的开关执行元件为场效应晶体管或具有近似特性的有源器件。 [0019] The shift switch control signal module, which performs gear shifting of the switching element active device having a field effect transistor or similar properties.

[0020] 所述负载切换和采样信号切换模块的控制信号并联。 [0020] parallel with the load control signal for switching the switching module and the sampling signal.

[0021] 其信号采样模块具有高的输入阻抗。 [0021] Signal sampling module which has a high input impedance.

[0022] 其工作原理为:多个采样器件,例如,取样电阻;一组负载切换电路,用于切换采样器件和负载之间的连接;一组采样信号切换电路,用于切换采样信号与信号处理单元之间的连接;通过负载切换电路和采样信号切换电路的分离,来消除采样信号通过切换器件所产生的额外的信号损失 [0022] The working principle is: a plurality of sampling devices, e.g., a sampling resistor; a set of load switching circuit for switching the connection between the sampling device and the load; a set of sampled signal switching circuit for switching the sampling signal and a signal the connection between the processing unit; separation load by the switching circuit and a sampling signal switching circuit to eliminate signal loss additional sampling signal generated by the switching device

[0023] 其中,信号采样模块,负责对信号进行取样。 [0023] wherein the signal sampling module is responsible for the signal is sampled.

[0024] 负载切换模块负责切换信号采样模块和负载之间的连接。 [0024] The load switching module is used for switching signal connection between the sampling module and the load.

[0025] 采样信号切换模块负责切换信号采用模块和采样信号处理模块之间的连接。 [0025] handover module is responsible for sampling the signal using a switching signal connection between the sampling module and the signal processing module.

[0026] 档位切换控制元件用于控制负载切换模块和采样信号切换模块。 [0026] The shift switch control device for controlling the load switching module and the switching module sampling signal.

[0027] 信号采样模块负责对信号进行采集,为了达到较宽的采集范围,本模块内部有若干个采样元件,每个采样元件对应一个合适的测量范围。 [0027] The signal sampling module is responsible for signal acquisition, in order to achieve a wider detection ranges, the interior of this module has several sampling elements, each element corresponding to sample a suitable measuring range.

[0028] 在电路工作时,主要工作电流通过采样模块,然后通过负载切换模块,流到负载。 [0028] In operation of the circuit, the current through the main work sampling module, and then via the load switching module to the load.

[0029] 在电流通过信号采样模块时,会在采样元件之一或采样元件之二上,产生压降,这组电压经过采样信号切换模块,送到采样信号处理模块,由采样信号处理模块进行放大和 [0029] When current flows through the signal sampling module, will be one element in the sample or samples of the two elements, a pressure drop, the set of sampled signal voltage switching module to the processing module sampling signal, sampled by the signal processing module zoom in and

4处理,以便获取测量结果。 4 process, so as to obtain the measurement results.

[0030] 由于电流信号直接由信号采样模块,通过采样信号切换模块耦合至采样信号处理模块,所以,负载切换模块的内阻不会影响到采样信号,也即负载切换模块不影响测量精度。 [0030] Since the current signal generated by the signal sampling module coupled directly through the sampling signal to the sampling switching module a signal processing module, therefore, the internal resistance of the load switching module does not affect the sampling signal, i.e. the load switching module does not affect the measurement accuracy.

[0031] 因为采样信号切换模块和负载切换模块的控制信号来自于档位切换控制信号模块,信号切换元件之一和信号切换元件之二与负载切换元件之一和负载切换元件之二的控制信号是并联的,所以保证了负载切换和采样信号切换的同步。 [0031] Since the control signal switching signal sampling module and the load switching module control signal from the shift switch module, one of the signal switching element and two switching signals of the switching elements and the load element and one of the two elements of the load switching control signal They are connected in parallel, so to ensure the synchronization and load switching signal sampling switch.

[0032] 因为信号切换元件和负载切换元件的开关速度极高,所以本方案可以实现非常高的档位切换速度。 [0032] Since the signal switching device and the load switching element is extremely high switching speed, the present embodiment can achieve very high switching speed gear.

[0033] 综上所述,本实用新型的有益效果是:可以有效解决采样切换电路的切换速度和切换器件带来的信号损失这一矛盾,可以广泛应用于仪器仪表等多种领域,较好的解决了开关器件内阻带来的测量误差和开关器件的执行速度影响档位切换速度的问题。 [0033] In summary, the present invention has the advantages that: the signal can effectively resolve the losses caused by the switching speed and the switching devices of the switching circuit sampling the contradiction can be widely applied to various fields other instruments, preferably It solves the problem of speed of execution of the switching device and the resistance measurement error caused by the influence of the shift switching device switching speed.

附图说明 BRIEF DESCRIPTION

[0034] 下面结合附图及具体实施方式,对本实用新型作进一步说明。 [0034] accompanying drawings and the following specific embodiments, further explanation of the invention as.

[0035] 图1是采样电阻并联连接的传统电流采样档位切换电路; [0035] FIG. 1 is a conventional gear current sampling resistor connected in parallel with the sampling switching circuit;

[0036] 图2是采样电阻串联的传统电流采样档位切换电路; [0036] FIG 2 is a conventional current sampling resistor in series with the switching gear sampling circuit;

[0037] 图3是取样电阻并联连接的用MOSFET作为档位切换开关器件的电流采样档位切换电路; [0037] FIG. 3 is a sampling resistor connected in parallel with the MOSFET switching circuit as a sense of the shift position switch device;

[0038] 图4是取样电阻串联连接的用MOSFET作为档位切换开关器件的电流采样档位切换电路; [0038] FIG. 4 is a sampling resistor connected in series with the MOSFET switching circuit as a sense of the shift position switch device;

[0039] 图5本实用新型实施例的连接关系图; [0039] Figure 5 embodiment of the present invention a connection diagram;

[0040] 图6本实用新型实施例的电路图。 A circuit diagram of [0040] Figure 6 embodiment of the present invention.

[0041] 附图标识:信号采样模块1、采样元件之一11、采样元件之二12、采样信号切换模块2、信号切换元件之一21、信号切换元件之二22、负载切换模块3、负载切换元件之一31、 负载切换元件之二32、采样信号处理模块4、负载5、档位切换控制信号模块6、控制信号之一61、控制信号之二62。 [0041] BRIEF identification: signal sampling module 1, one sampling element 11, two elements 12 of the sampling, the sampling signal switching module 2, one of the signal switching device 21, two signal switching element 22, the load switching module 3, the load one switching element 31, two load switching element 32, the sampling signal processing module 4, a load 5, the gear switching control signal module 6, one of the control signals 61, 62 control the two signals.

具体实施方式 Detailed ways

[0042] 如图5所示,信号采样模块1负责对信号进行采集,为了达到较宽的采集范围,本模块内部有若干个采样元件,每个采样元件对应一个合适的测量范围。 As shown in [0042] FIG 5, a signal sampling module is responsible for signal acquisition, in order to achieve a wider detection ranges, the interior of this module has several sampling elements, each element corresponding to sample a suitable measuring range.

[0043] 在电路工作时,主要工作电流通过采样模块1,然后通过负载切换模块3,流到负载5。 [0043] In operation of the circuit, the current through the main work sampling module 1, and then via the load switching module 3, to the load 5.

[0044] 在电流通过信号采样模块1时,会在采样元件之一11或采样元件之二12上,产生压降,这组电压经过采样信号切换模块2,送到采样信号处理模块4,由采样信号处理模块4 进行放大和处理,以便获取测量结果。 [0044] In the current 1, 1211 will be on the two elements of one sample or sample element, a pressure drop is generated by the signal sampling module, the set of sampled signal voltage switching module 2, module 4 to the sampling signal processing, the sampling the signal processing module 4 amplified and processed to obtain a measurement result.

[0045] 由于电流信号直接由信号采样模块1,通过采样信号切换模块2耦合至采样信号处理模块4,所以,负载切换模块3的内阻不会影响到采样信号,也即负载切换模块3不影响测量精度。 [0045] Since the current signal coupled directly from the signal sampling module 1, module 2 by switching the sampling signal to sample a signal processing module 4, so that the internal resistance of the load switching module 3 will not affect the sampling signal, i.e. no load switching module 3 affect measurement accuracy. [0046] 因为采样信号切换模块2和负载切换模块3的控制信号来自于档位切换控制信号模块6,信号切换元件之一21和信号切换元件之二22与负载切换元件之一31和负载切换元件之二32的控制信号是并联的,所以保证了负载切换和采样信号切换的同步。 [0046] Since the sampling signal switching load switching module 2 and module 3 control signal from the switching control signal to the shift module 6, one of the signals and a signal switching element 21 switches one of the two elements 22 and 31 and the load switching load switching element the two signals control element 32 are connected in parallel, so to ensure the synchronization and load switching signal sampling switch.

[0047] 因为信号切换元件和负载切换元件的开关速度极高,所以本方案可以实现非常高的档位切换速度。 [0047] Since the signal switching device and the load switching element is extremely high switching speed, the present embodiment can achieve very high switching speed gear.

[0048] 图6本实用新型实施例的电路图。 A circuit diagram of [0048] Figure 6 embodiment of the present invention. 在图中,2R1、2R2、2R3、2R4构成了电流信号采样模块1,电流流经取样电阻后就会产生压降。 In the drawings, 2R1,2R2,2R3,2R4 constitute a current signal sampling module 1, the current flowing through the sense resistor voltage drop is generated. 2Q3、2Q6、2Q9、2Q12构成了负载切换模块3。 2Q3,2Q6,2Q9,2Q12 3 constituting the load switching module. 2Q2、2Q5、2Q8、2Q11构成了信号切换模块2,2U1及其周边电路构成了采样信号处理模块4, 控制信号来源于RANGE 1、RANGE2、RANGE3、RANGE4。2LED1、2LED2、2LED3、2LED4 为档位显示电路。 2Q2,2Q5,2Q8,2Q11 constituting the signal switching circuit and its peripheral module 2,2U1 sampling signal processing module 4, a control signal is derived from RANGE 1, RANGE2, RANGE3, RANGE4.2LED1,2LED2,2LED3,2LED4 of gear display circuit. 工作时,控制信号控制负载切换模块3和信号切换模块2进行档位选择,负载电流的流向为通过采样电阻、到负载切换模块3,再到负载5,虽然负载电流流经负载切换模块3会产生压降,但是因为负载切换模块3不在信号处理回路中,所以对测试结果基本上没有影响。 In operation, the control signal controls the load switching module 3 and the signal switching gear selection module 2, the load current flowing through the sampling resistor, the load switching module 3, and then load 5, while the load current flowing through the load switching module 3 will pressure drop, but because the load switching module is not in a signal processing circuit 3, so that substantially no effect on the test results. 信号的流向为依次从采样电阻、到信号切换模块2、再到采样信号处理模块,然后转换成电压信号送到测量ADC,由于采样信号处理模块4的输入阻抗非常高,尽管信号切换模块2 有一定的内阻,但是相比信号处理模块的输入阻抗,仍然可以小到忽略不计,所以信号可以完全不受影响的到达信号处理模块。 Sequentially to the signal flow from the sampling resistor, the signal switching module 2, and then sampling the signal processing module, and then converted to a voltage signal to the ADC measurement, since the sampling signal processing module 4 input impedance is very high, although the signal has switching module 2 some resistance, but compared to the input impedance of the signal processing module can still be small to negligible, so the signal can be completely unaffected arrival signal processing module. 由于MOSFET的切换速度非常快,解决了切换器件对信号的损失和继电器等器件切换速度慢的缺点。 Since the very fast switching speed of the MOSFET, the switching device addresses the shortcomings of the other relay device switching losses and slow the velocity signal. 所以,本电路实现了取样电路档位快速切换。 Therefore, the circuit of the sampling circuit to achieve fast switching gear.

[0049] 该设计目前已经批量应用于USB设备的负载电流测试,工作稳定可靠,证明了本实用新型的解决方案具有实际的应用价值。 [0049] The design is now applied to the load current batch testing USB devices, stable and reliable, proven solutions to the present invention has practical application value.

[0050] 综上所述,本实用新型可以解决传统取样电路档位切换的速度慢或切换元件影响测量精度的问题,实现高精度、高速度的档位切换,为高精度、高速度、宽范围的测量提供了■石出。 [0050] In summary, the present invention can solve the conventional speed range switching slow sampling circuit or the switching elements affect the measurement accuracy problem, high-precision, high-speed range switching, high-precision, high-speed, wide ■ measuring range provide the stone.

Claims (3)

1. 一种取样电路档位快速切换装置,包括:信号采样模块、负载切换模块、采样信号切换模块、采样信号处理模块和档位切换控制模块;所述信号采样模块采集信号,所述负载切换模块切换采样模块和负载之间的连接,所述采样信号切换模块连接采样信号和采样信号处理模块,所述档位切换控制模块控制负载切换模块和采样信号切换模块的切换动作,其特征在于:所述负载切换模块和采样信号切换模块分离。 A sampling circuit shift fast switching apparatus comprising: signal sampling module, a load switching module, the switching module sampling signal, a sampling signal processing module and gear switching control module; said signal sampling module signal acquisition, the load switching the switching module is connected between the sampling module and the load switching module connected to said sampled signal and the sampling signal sampled signal processing module, the gear switching control module controls the load switching module operation switching signal switching and sampling module, wherein: the load switching module and the switching module sampling signal separation.
2.根据权利要求1所述的取样电路档位快速切换装置,其特征在于:所述负载切换模块与其采样信号处理回路无连接;所述信号采样模块内部有多个采样元件;所述采样信号切换模块内部有多个信号切换元件;所述负载切换模块内部有多个负载切换元件。 The sampling circuit according to claim 1 shift fast switching means, wherein: said load switching module and its sampling signal processing circuit connectionless; inside the sampling module with a plurality of signal sampling element; said sampled signal internal switching module has a plurality of signal switching elements; the load switching module has a plurality of inner load switching element.
3.根据权利要求1或2所述的取样电路档位快速切换装置,其特征在于:所述档位切换控制信号模块中,其档位切换的开关执行元件为场效应晶体管或具有近似特性的有源器件。 The sampling circuit of claim 12 or gear as claimed in claim fast switching means, wherein: said shift control signal switching module, the switching element performs its switching gear or a field effect transistor having similar properties active devices.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103308079A (en) * 2012-03-12 2013-09-18 博西华电器(江苏)有限公司 Household electrical appliance and gear detection device thereof as well as stove and smoke exhaust ventilator assembly
CN104569700A (en) * 2015-02-03 2015-04-29 上海观源信息科技有限公司 Equipment power consumption acquiring device with various interfaces
CN105450203A (en) * 2015-11-13 2016-03-30 得理电子(上海)有限公司 Interference filtering device and interference filtering method for rapid on-off mechanical switches
CN105891704A (en) * 2014-05-05 2016-08-24 惠州市德赛西威汽车电子股份有限公司 Gear detection circuit of heavy-current switch
WO2017133396A1 (en) * 2016-02-05 2017-08-10 广东欧珀移动通信有限公司 Terminal charging system, charging method, and power adapter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103308079A (en) * 2012-03-12 2013-09-18 博西华电器(江苏)有限公司 Household electrical appliance and gear detection device thereof as well as stove and smoke exhaust ventilator assembly
CN105891704A (en) * 2014-05-05 2016-08-24 惠州市德赛西威汽车电子股份有限公司 Gear detection circuit of heavy-current switch
CN104569700A (en) * 2015-02-03 2015-04-29 上海观源信息科技有限公司 Equipment power consumption acquiring device with various interfaces
CN105450203A (en) * 2015-11-13 2016-03-30 得理电子(上海)有限公司 Interference filtering device and interference filtering method for rapid on-off mechanical switches
CN105450203B (en) * 2015-11-13 2018-06-01 得理电子(上海)有限公司 A kind of interference filter device and method for quick on-off mechanical switch
WO2017133396A1 (en) * 2016-02-05 2017-08-10 广东欧珀移动通信有限公司 Terminal charging system, charging method, and power adapter
WO2017133395A1 (en) * 2016-02-05 2017-08-10 广东欧珀移动通信有限公司 Terminal charging system, charging method, and power adapter
EP3285361A4 (en) * 2016-02-05 2018-06-06 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Terminal charging system, charging method, and power adapter
US10320225B2 (en) 2016-02-05 2019-06-11 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Charging system and charging method for increasing service life of battery of terminal and power adapter thereof

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