CN2722304Y

CN2722304Y - Power supply switch adjusting circuit of manual information processor

Info

Publication number: CN2722304Y
Application number: CN 200420037356
Authority: CN
Inventors: 吴铭宏
Original assignee: Huanda Computer Shanghai Co Ltd; Mitac International Corp
Current assignee: Huanda Computer Shanghai Co Ltd; Shanghai Huanda Computer Technology Co Ltd; Mitac International Corp
Priority date: 2004-07-08
Filing date: 2004-07-08
Publication date: 2005-08-31
Anticipated expiration: 2014-07-08

Abstract

The utility model discloses a power supply switch adjusting circuit of manual information processor which can effectively control the starting and the closing of the system power supply to avoid the false action of the power switch from generating. The power supply switch adjusting circuit of manual information processor comprises a preparative power unit to provide the preparative power (StandbyPower) for the other units to work. The power supply switch adjusting circuit of manual information processor simultaneously makes use of the control unit to detect the state of the starting unit and makes the switch unit be started or be closed according to the state and the power supply switch adjusting circuit of manual information processor realizes the goal of controlling the switch of the power.

Description

The power on-off control circuit of hand-held signal conditioning package

Technical field

The utility model is a kind of power on-off control circuit, and particularly a kind of being applied in the hand-held signal conditioning package is used for adjusting the startup of working power and the control circuit of closing.

Background technology

In today that numeral is in fashion from generation to generation, the information dependent merchandise becomes the hot product that old century strides into the new century already, and in the differentiation of going through for many years, the simple type electronic notebook of assist people to live management, writing down miscellaneous affairs is replaced by hand held data processor gradually, and then becomes scientific and technological upstart, the personage's of industrial and commercial enterprises carry-on secretary.

The hand-held signal conditioning package is exactly a palmtop computer to be used as the carry-on assistant of individual numeral use, at present personal digital assistant (Personal Digital Assistant; PDA) function is by initial calendar, backlog, notepad, address book or the like basic function, develop at present can and computer between carry out synchronous data transmission, even various application software can be installed to expand its function or the like, these extended functions can include: online E-mail receiver/send function, the stock information function of browse, the revenue and expenditure writing function, the e-book function of browse, the electronic game function, the electrical form functions of use, the database application function, life information provides function, wireless communication function or the like is too numerous to enumerate, believe and holding under the kind situation of personnel selection that its utilization benefit can surmount general assistant to holding the help of personnel selection with its function.

No matter but be simple type electronic notebook in the past or the PDA(Personal Digital Assistant) of today, the working power of its device all is to be responsible for control with general change-over switch (Switch).

But above-mentionedly control the mode of power supply with general change-over switch (Switch), usually can be because of user's false touch opening power, the electrical source consumption of this kind non-essential, real for the hand-held signal conditioning package is the last disadvantage of a design.

Summary of the invention

In view of this, the utility model proposes a kind of power on-off control circuit of hand-held signal conditioning package, the startup that its purpose is effective control system power supply with close, and then avoid user's false touch and cause the unnecessary consumption of power supply.

For realizing goal of the invention, be provided with a time parameter in this hand-held signal conditioning package, the power switch framework of the utility model includes a preparation power supply unit, a start unit, a switch element and a control module, this preparation power supply unit produces a pre-stand-by power source, in order to provide this power switch framework work required electric power; This start unit is connected with this preparation power supply unit, and this start unit sends one in order to a corresponding user's push action and starts signal and be sent to output terminal; This control module is connected with this start unit, and this control module is in order to receiving this startup signal, and sends a controlling signal during greater than this time parameter in time of this startup signal; This switch element and this control are single ₁Unit connects, and this switch element is in order to control the working power of this hand-held signal conditioning package according to this controlling signal.

Provide the usefulness of pre-stand-by power source (Standby Power) by above-mentioned preparation power supply unit for other cell operation, utilize control module to detect the state of start unit simultaneously, and its state of complying with makes switch element open or close, make its purpose that reaches the Control work power switch, and further reach the inessential electrical source consumption of saving the hand-held signal conditioning package.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing and preferred embodiment:

Fig. 1 is the calcspar of the power on-off control circuit of the utility model hand-held signal conditioning package;

Fig. 2 is the preparation power unit circuit figure of the power on-off control circuit of the utility model hand-held signal conditioning package;

Fig. 3 is the start unit circuit diagram of the power on-off control circuit of the utility model hand-held signal conditioning package;

Fig. 4 is the switch element circuit diagram of the power on-off control circuit of the utility model hand-held signal conditioning package.

Embodiment

The power on-off control circuit of the hand-held signal conditioning package of the utility model please refer to Fig. 1, is the calcspar of the power on-off control circuit of the utility model hand-held signal conditioning package.

The framework of the utility model includes: control module 10, preparation power supply unit 20, start unit 30 and switch element 40, wherein prepare power supply unit 20 and can produce a pre-stand-by power source (Standby Power), so that other unit (as: control module 10 in the power switch framework to be provided, start unit 30 and switch element 40) the required electric power of work, start unit 30 then is used for a corresponding user's push action and sends the startup signal, and will start signal and be sent to control module 10, be provided with a time parameter in the control module 10, after control module 10 is received the startup signal, can be compared starting signal lasting time and time parameter, and in duration that starts signal during greater than time parameter, send controlling signal and be sent to switch element 40, after switch element 40 is received controlling signal, then open or close the working power of hand-held signal conditioning package according to controlling signal.

Next do one with regard to the preparation power supply unit of the power on-off control circuit of the utility model hand-held signal conditioning package and describe in detail, please refer to Fig. 2, be the preparation power unit circuit figure of the power switch framework of the utility model hand-held signal conditioning package.

Include in the preparation power supply unit 20 of the utility model: battery module 21 and voltage stabilizing element 22, wherein battery module 21 1 ends and earth terminal G join, the other end then is connected with voltage stabilizing element 22, for the power switch framework that makes the utility model is all moved at any time, so be provided with battery module 21 especially, because when the hand-held signal conditioning package does not start, be to be in the state that does not have working power Vcc, provide electric power so must rely on battery module 21, and being sent to voltage stabilizing element 22, this voltage stabilizing element 22 can be low-dropout regulator (Low-Drop Out; LDO), after being used for power conversions is pre-stand-by power source, other unit that could drive the utility model comes the Push And Release of Control work power Vcc.

Please refer to Fig. 3, start unit circuit diagram for the power on-off control circuit of the utility model hand-held signal conditioning package, include in the start unit: starting element 31, starting resistance 32 and capacity cell 33, wherein starting resistance 32 joins with preparation power supply unit 20, be used to produce that pressure drop makes starting element 31 is output as a high levels (H), and capacity cell 33 is connected with starting resistance 32 and the other end is connected with earth terminal G, this capacity cell 33 is in order to filtering noise, when user's desire is opened or is closed the hand-held signal conditioning package, then necessary started by press element 31, this starting element 31 can be change-over switch (switch), when starting element 31 is subjected to pushing, then can produce internal short-circuit and the high levels (H) of output terminal is started signal and import earth terminal G, make output change low level (L) into by high levels (H).

And control module 10 can include microprocessor (Microprocessor), after control module 10 receives that this changes the startup signal of low level (L) into by high levels (H), control module 10 can calculate the time that starting element 31 is pressed according to the length that starts signal, then be considered as user's false touch if start the time of signal less than time parameter, 10 of control modules are failure to actuate, if the time that starts signal is during greater than time parameter, then can confirm a flag in the control module 10, (, flag do not start shooting to determine the present state of hand-held signal conditioning package if being 0 expression hand-held signal conditioning package, flag is that 1 expression hand-held signal conditioning package is just in using), if flag is 0 and sends controlling signal, if flag is 1 and stops to send controlling signal.

Please refer to Fig. 4 at last, switch element circuit diagram for the power on-off control circuit of the utility model hand-held signal conditioning package, the switch element 40 of the utility model includes: first on-off element 41, second switch element 42, first resistance 43 and second resistance 44, wherein first resistance 43 is used to produce pressure drop and is connected with first on-off element 41, and second resistance 44 also is used to produce pressure drop and be connected with second switch element 42, first on-off element 41 and second switch element 42 can be a MOS (metal-oxide-semiconductor) memory (MOSFET), after first on-off element 41 is received controlling signal, first on-off element 41 is opened, the pressure drop of second resistance 44 is imported earth terminal G, second switch element 42 is opened, pre-stand-by power source then can pass via second switch element 42 and hold to working power Vcc this moment, make the hand-held signal conditioning package begin initiating task, the flag in the control module 10 is set to 1 simultaneously.

When if the user desires to close the hand-held signal conditioning package, only need started by press unit 30 to send the startup signal, control module 10 can be compared with time parameter after receiving the startup signal equally, flag in the control module 10 is set to 1 at this moment, so control module 10 can interrupt controlling signal, and first on-off element 41 is closed, the pressure drop of second resistance 44 like this then can recover, second switch element 42 is closed, cause system cut-off and make hand-held signal conditioning package powered-down.

Though the utility model discloses as above with aforementioned preferred embodiment; so it is not in order to limit practical range of the present utility model; anyly be familiar with this operator; the equalization of being done in the spirit that does not break away from the utility model and claims scope changes and modifies; be all the utility model rights protection scope and contain, so the rights protection scope of the utility model must be looked the appended claims scope person of defining of this instructions and is as the criterion.

Claims

1. the power on-off control circuit of a hand-held signal conditioning package is provided with a time parameter in this hand-held signal conditioning package, and it is characterized in that: this power switch framework includes:

One preparation power supply unit, this preparation power supply unit produces a pre-stand-by power source, in order to provide this power switch framework work required electric power;

One start unit, this start unit is connected with this preparation power supply unit, and this start unit sends one in order to a corresponding user's push action and starts signal and be sent to output terminal;

One control module, this control module is connected with this start unit, and this control module is in order to receiving this startup signal, and sends a controlling signal during greater than this time parameter in time of this startup signal; And

One switch element, this switch element is connected with this control module, and this switch element is in order to control the working power of this hand-held signal conditioning package according to this controlling signal.

2. the power on-off control circuit of hand-held signal conditioning package according to claim 1, it is characterized in that: this preparation power supply unit also includes:

One battery module, this battery module is in order to produce an electric power; And

One voltage stabilizing element, this voltage stabilizing element is connected with this battery module, and this voltage stabilizing element is in order to spread out of this power conversions for behind this pre-stand-by power source.

3. as the power on-off control circuit of hand-held signal conditioning package as described in the claim 2, it is characterized in that: this voltage stabilizing element is a low-dropout regulator (Low-Drop Out; LDO).

4. the power on-off control circuit of hand-held signal conditioning package according to claim 1, it is characterized in that: this start unit also includes:

One starting resistance, this starting resistance and this preparation power supply unit join, and this starting resistance is in order to produce pressure drop;

One starting element, this starting element and this starting resistance join, and this starting element sends this startup signal after in order to the push action that receives this user; And

One capacity cell, this capacity cell is connected with this starting resistance, and this capacity cell is in order to filtering noise.

5. as the power on-off control circuit of hand-held signal conditioning package as described in the claim 4, it is characterized in that: this starting element is one to switch switch (switch).

6. the power on-off control circuit of hand-held signal conditioning package according to claim 1, it is characterized in that: this switch element also includes:

One first on-off element, this first on-off element is connected with this control module, and this first on-off element sends an activation signal after receiving this controlling signal;

One first resistance, this first resistance is connected with this first on-off element, and this first resistance is in order to produce pressure drop;

One second switch element, this second switch element is connected with this first on-off element, and this second switch element should be sent to the power switch framework that this hand-held signal conditioning package of triggering is brought in output by pre-stand-by power source in order to after receiving this activation; And

One second resistance, this second resistance is connected with this second switch element, and this second resistance is in order to produce pressure drop.

7. as the power on-off control circuit of hand-held signal conditioning package as described in the claim 6, it is characterized in that: this first on-off element is a MOS (metal-oxide-semiconductor) memory (MOSFET).

8. as the power on-off control circuit of hand-held signal conditioning package as described in the claim 6, it is characterized in that: this second switch element is a MOS (metal-oxide-semiconductor) memory (MOSFET).

9. the power on-off control circuit of hand-held signal conditioning package according to claim 1, it is characterized in that: this control module comprises a microprocessor (Microprocessor).