CN104391562A - Self-starting interference-free circuit for positioning modules of intelligent terminals - Google Patents
Self-starting interference-free circuit for positioning modules of intelligent terminals Download PDFInfo
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- CN104391562A CN104391562A CN201410551510.8A CN201410551510A CN104391562A CN 104391562 A CN104391562 A CN 104391562A CN 201410551510 A CN201410551510 A CN 201410551510A CN 104391562 A CN104391562 A CN 104391562A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/28—Modifications for introducing a time delay before switching
- H03K17/284—Modifications for introducing a time delay before switching in field effect transistor switches
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- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Electronic Switches (AREA)
Abstract
The invention discloses a self-starting interference-free circuit for positioning modules of intelligent terminals, which comprises a power circuit, a signal response switching circuit and a delay circuit; the output ends of the power circuit are connected with the input ends of the signal response switching circuit and the delay circuit, and the power circuit is used for supplying electricity; the output end of the signal response switching circuit is connected with the input end of the delay circuit, and the signal response switching circuit is used for controlling the working state of the delay circuit. When a main system is powered up to start, the electrification of a positioning application module is delayed, or the opening of a communication channel between the positioning application module and the main system is delayed, and thereby system interference caused by the self-starting of the positioning application module is eliminated; the self-starting interference-free circuit has a simple structure, is convenient to operate, reduces the starting load of equipment, and greatly enhances the security of equipment.
Description
Technical field
What the present invention relates to the portable portable terminal device of the intelligent operating system with positioning function or terminal console exempts from interfered circuit, and interfered circuit is exempted from the self-starting particularly relating to a kind of locating module of intelligent terminal.
Background technology
At present, intelligent operating system comparatively common are WINDOWS Windows, the Android operation system of ARM framework, the IOS Apple Macintosh operating system of ARM framework of X86-based, also has (SuSE) Linux OS etc.
Usually some intelligent terminals are with positioning function, namely intelligent operating system adds positioning function, its implementation has multiple usually, wherein a kind of hardware design circuit adopts main system to add location application module method, as shown in Figure 1, main system and position application intermodule adopt the communication mode of UART mouth usually.
In this hardware design, during main system starting up, position application module automatically powers up and enables simultaneously.The communication port of position application module by being connected with main system, sends data from trend main system.Main system is now probably made to transfer dedicated mode (main system design itself so) to, or data dislocation responds, and (main system has response, but be not yet based upon position application mode response), thus system produces disabler or dysfunction, after such as starting up, one causes touch screen touch point to dap without reason phenomenon, and touch controllable function is disorderly, and touch controllable function is disturbed.This such as systemic-function lost efficacy or the phenomenon of disorder is referred to as systematicness interference in the present invention.
Summary of the invention
In order to avoid this systematicness interference, interfered circuit is exempted from the self-starting that the present invention proposes a kind of locating module of intelligent terminal, when main system start powers up startup, the time delay of position application module is powered up, or the communication port between Time Delay Opening position application module and main system.
The present invention adopts following technical scheme:
An interfered circuit is exempted from the self-starting of the locating module of intelligent terminal, comprises power circuit, signal response on-off circuit and delay circuit; The output terminal of described power circuit is connected with the input end of signal response on-off circuit and delay circuit, for power supply; The described output terminal of signal response on-off circuit is connected with the input end of delay circuit, for controlling the duty of delay circuit.
Further, described power circuit comprises power module, starting-up signal load module, power supply stabilization circuit; The output terminal of described power module is connected with the input end of power supply stabilization circuit; The control end of described power supply stabilization circuit is connected with the output terminal of starting-up signal load module, and its output terminal is used for the input end of connection signal responding to switch circuit and delay circuit.
Further, described delay circuit comprises 555 time delay modules, the first resistance R1, the first electric capacity C1 and the second electric capacity C2, and the reset pin of described 555 time delay modules is connected with the output terminal of power supply stabilization circuit with power pins; The threshold value pin of 555 time delay modules is connected with triggering input pin; The triggering input pin of 555 time delay modules is connected with the output terminal of power supply stabilization circuit by the first electric capacity C1, and by the first resistance R1 ground connection; The control pin of 555 time delay modules is by the second electric capacity C2 ground connection.
Further, described signal response on-off circuit comprises P type metal-oxide-semiconductor Q1, the second resistance R2, the 3rd electric capacity C3 and a 4th electric capacity C4; The grid of described P type metal-oxide-semiconductor Q1 is connected with the output terminal of power supply stabilization circuit by the second resistance R2, and by the 3rd electric capacity C3 ground connection, its source electrode is connected with the output terminal of power supply stabilization circuit, and drain electrode is connected with the triggering input pin of 555 time delay modules; One end of described 4th electric capacity C4 is connected with the output terminal of power supply stabilization circuit, other end ground connection.
Further, the signal lag time of described signal response on-off circuit and delay circuit is T=C1*R1.
Beneficial effect of the present invention:
The present invention is when main system starting up, by increasing in main system and position application intermodule, the time delay of position application module is powered up, or the hardware circuit of Time Delay Opening and main system communication port, realize avoiding position application module owing to powering up the systematicness interference caused with main system module simultaneously, there will not be device power-up dysfunction, controlling without the need to increasing GPIO, without the need to passing through software control, structure is simple, and cost is low, simple to operate.
The present invention is by powering up the time delay of position application module, so start is later in latency period, position application module does not power up and does not work, power consumption of so starting shooting just is saved, startup equipment load is just little, substantially increase the security that some exists the equipment of start overload problem, but also achieve start power saving.
Accompanying drawing explanation
Fig. 1 is a kind of principle schematic of prior art;
Fig. 2 is the principle schematic of an embodiment of the present invention;
Fig. 3 is the circuit diagram of an embodiment of the present invention;
Fig. 4 is the time delay time diagram of an embodiment of the present invention;
Fig. 5 is the circuit diagram of the control communication port of an embodiment of the present invention;
Fig. 6 is the circuit diagram that the control of an embodiment of the present invention powers up;
Fig. 7 is that the time delay of an embodiment of the present invention powers up application circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 2, be that interfered circuit is exempted from the self-starting of the locating module of the intelligent terminal of a kind of embodiment of the present invention, comprise power circuit 1, signal response on-off circuit 2 and delay circuit 3; The output terminal of described power circuit 1 is connected with the input end of signal response on-off circuit 2 and delay circuit 3, for power supply; The output terminal of described signal response on-off circuit 2 is connected with the input end of delay circuit 3, for controlling the duty of delay circuit.
As shown in Figure 3, power circuit 1 comprises power module, starting-up signal load module, power supply stabilization circuit; Power module can be battery or external power adapter; Power supply stabilization circuit is used for the operating voltage output voltage of power module being converted to chip; The output terminal of power module is connected with the input end of power supply stabilization circuit; The control end of power supply stabilization circuit is connected with the output terminal of starting-up signal load module, and its output terminal is used for connection signal responding to switch circuit 2 and is connected with the input end of delay circuit 3; In the present embodiment, power module is 2 joint lithium batteries, and the voltage provided is 6.8V; Starting-up signal inputs for accepting outside instruction, for accepting the open and closed of open state in the present embodiment; What power supply stabilization circuit adopted is SG2001-3.3XN5(linear voltage regulator chip), the supply voltage provided by power module is converted to the voltage of 3.3V for signal response circuit 2 and delay circuit 3.
Delay circuit 3 comprises 555 time delay modules, the first resistance R1, the first electric capacity C1 and the second electric capacity C2; The reset pin (pin 4) of 555 time delay modules is connected with the output terminal of power supply stabilization circuit with power pins (pin 8); The threshold value pin (pin 6) of 555 time delay modules is connected with the triggering input pin (pin two) of 555 time delay modules; The triggering input pin (pin two) of 555 time delay modules is connected with the output terminal of power supply stabilization circuit by the first electric capacity C1, and by the first resistance R1 ground connection; The control pin (pin 5) of 555 time delay modules is by the second electric capacity C2 ground connection.
Signal response on-off circuit 2 comprises P type metal-oxide-semiconductor Q1, the second resistance R2, the 3rd electric capacity C3 and a 4th electric capacity C4; The grid of described P type metal-oxide-semiconductor Q1 is connected with the output terminal of power supply stabilization circuit by the second resistance R2, and by the 3rd electric capacity C3 ground connection, its source electrode is connected with the output terminal of power supply stabilization circuit, and drain electrode is connected with the triggering input pin of 555 time delay modules; One end of described 4th electric capacity C4 is connected with the output terminal of power supply stabilization circuit, other end ground connection.The effect of P type metal-oxide-semiconductor Q1 is switching response effect, when its grid is high level, its source grid pressure reduction is low-voltage, therefore its on off state is off, namely source electrode and drain electrode disconnect, the triggering input pin of 555 time delay modules then in delay circuit, threshold value pin and power supply disconnect, and 555 time delay modules are in discharge condition, and discharge time constant is T.Otherwise, when P type metal-oxide-semiconductor Q1 grid is low level, its source grid pressure reduction is high voltage, therefore its on off state is conducting, i.e. source electrode and drain electrode conducting, the triggering input pin of 555 time delay modules then in delay circuit, threshold value pin and power supply conducting, 555 time delay modules are in charged state, and are full of instantaneously.Resistance R2 is used for providing a working current to the grid of P type metal-oxide-semiconductor Q1, and electric capacity C3 is used for realizing input signal filtering, and electric capacity C4 is used for realizing power filter.The signal lag time of signal response on-off circuit and delay circuit is T=C1*R1, and the size therefore by arranging C1 and R1 controls the delay time needed.In the present embodiment, C1 is 1uF, R1 is 1M Ω, and therefore delay time is about 10 seconds.
In sum, principle of work of the present invention is: the grid powering up moment Q1 due to start is low level, source grid pressure reduction is high voltage, the on off state of Q1 is conducting, i.e. source electrode and drain electrode conducting, the triggering input pin of 555 time delay modules, the very first time charging of threshold value pin, it exports out signal is low level.After moment, the output terminal of power module 1 is charged by resistance R2, the grid of Q1 is drawn into high level, the on off state upset of Q1 is off, triggering input pin, the threshold value pin of 555 time delay modules are discharged by electric capacity C1 and resistance R1, and discharge time constant is T=C1*R1, after time delay T, export the upset of out signal for high level, its sequential as shown in Figure 4.
As shown in Figure 5, Out signal---control signal, the communication port that can directly control between position application module and main system " leads to " " breaking " state, and level " 1 " correspondence " is led to "; Otherwise level " 0 " correspondence " is broken " state, so realizes the communication port between the said Time Delay Opening of the present invention and main system.
As shown in Figure 6, Out signal---control signal, also directly can control " powering up " " power-off " state of position application module, level " 1 " correspondence " powers up "; Otherwise level " 0 " correspondence " power-off " state, so realizes the said time delay of the present invention and powers up.
As shown in Figure 7, the present invention has design ap-plication on a PAD, and this PAD has GPS/ Big Dipper positioning function, includes GPS/ Big Dipper position application module, and adopt 3.3V working power to be GPS/ Big Dipper position application module for power supply, its application circuit as shown in Figure 7.The out signal that interfered circuit is exempted from the self-starting of the locating module of a kind of intelligent terminal of the present invention is connected with the Enable Pin of SG2001-3.3XN5 chip, for the opening and closing of control SG2001-3.3XN5 chip, thus reach after the time delay of setting, control the object that locating module is powered up, VCC3V3 power supply activates after start, deriving from system power supply module and change the working power provided again, is just 0V after shutdown.This circuit adopts time delay of the present invention to add electric control circuit, is finally control GPS application module 3.3V(GPS_3V3) power up work.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
More than show and describe ultimate principle of the present invention, principal character and advantage.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. an interfered circuit is exempted from the self-starting of the locating module of intelligent terminal, it is characterized in that: comprise power circuit, signal response on-off circuit and delay circuit; The output terminal of described power circuit is connected with the input end of signal response on-off circuit and delay circuit, for power supply; The described output terminal of signal response on-off circuit is connected with the input end of delay circuit, for controlling the duty of delay circuit.
2. interfered circuit is exempted from the self-starting of the locating module of a kind of intelligent terminal according to claim 1, it is characterized in that: described power circuit comprises power module, starting-up signal load module, power supply stabilization circuit; The output terminal of described power module is connected with the input end of power supply stabilization circuit; The control end of described power supply stabilization circuit is connected with the output terminal of starting-up signal load module, and its output terminal is used for the input end of connection signal responding to switch circuit and delay circuit.
3. interfered circuit is exempted from the self-starting of the locating module of a kind of intelligent terminal according to claim 1, it is characterized in that: described delay circuit comprises 555 time delay modules, the first resistance R1, the first electric capacity C1 and the second electric capacity C2, and the reset pin of described 555 time delay modules is connected with the output terminal of power supply stabilization circuit with power pins; The threshold value pin of 555 time delay modules is connected with the triggering input pin of 555 time delay modules; The triggering input pin of 555 time delay modules is connected with the output terminal of power supply stabilization circuit by the first electric capacity C1, and by the first resistance R1 ground connection; The control pin of 555 time delay modules is by the second electric capacity C2 ground connection.
4. interfered circuit is exempted from the self-starting of the locating module of a kind of intelligent terminal according to claim 1, it is characterized in that: described signal response on-off circuit comprises P type metal-oxide-semiconductor Q1, the second resistance R2, the 3rd electric capacity C3 and a 4th electric capacity C4; The grid of described P type metal-oxide-semiconductor Q1 is connected with the output terminal of power supply stabilization circuit by the second resistance R2, and by the 3rd electric capacity C3 ground connection, its source electrode is connected with the output terminal of power supply stabilization circuit, and drain electrode is connected with the triggering input pin of 555 time delay modules; One end of described 4th electric capacity C4 is connected with the output terminal of power supply stabilization circuit, other end ground connection.
5. interfered circuit is exempted from the self-starting of the locating module of a kind of intelligent terminal according to claim 1, it is characterized in that: the signal lag time of described signal response on-off circuit and delay circuit is T=C1*R1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551510.8A CN104391562A (en) | 2014-10-17 | 2014-10-17 | Self-starting interference-free circuit for positioning modules of intelligent terminals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551510.8A CN104391562A (en) | 2014-10-17 | 2014-10-17 | Self-starting interference-free circuit for positioning modules of intelligent terminals |
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| Publication Number | Publication Date |
|---|---|
| CN104391562A true CN104391562A (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410551510.8A Pending CN104391562A (en) | 2014-10-17 | 2014-10-17 | Self-starting interference-free circuit for positioning modules of intelligent terminals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111736184A (en) * | 2020-05-11 | 2020-10-02 | 南京熊猫电子股份有限公司 | Automatic identification and switching circuit device for external and internal satellite positioning receiving signals |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020042280A1 (en) * | 1998-12-07 | 2002-04-11 | Allen Alvin C. | Apparatus and method for triggerable location reporting |
| CN101106459A (en) * | 2006-07-12 | 2008-01-16 | 北京六合万通微电子技术有限公司 | Low power consumption wireless network connection device and its connection method |
| CN201467088U (en) * | 2009-06-08 | 2010-05-12 | 南京普天大唐信息电子有限公司 | Time delay switch |
-
2014
- 2014-10-17 CN CN201410551510.8A patent/CN104391562A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020042280A1 (en) * | 1998-12-07 | 2002-04-11 | Allen Alvin C. | Apparatus and method for triggerable location reporting |
| CN101106459A (en) * | 2006-07-12 | 2008-01-16 | 北京六合万通微电子技术有限公司 | Low power consumption wireless network connection device and its connection method |
| CN201467088U (en) * | 2009-06-08 | 2010-05-12 | 南京普天大唐信息电子有限公司 | Time delay switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111736184A (en) * | 2020-05-11 | 2020-10-02 | 南京熊猫电子股份有限公司 | Automatic identification and switching circuit device for external and internal satellite positioning receiving signals |
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Application publication date: 20150304 |
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