CN205302176U - Many buttons reset circuit and have electronic product of button that resets - Google Patents
Many buttons reset circuit and have electronic product of button that resets Download PDFInfo
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- CN205302176U CN205302176U CN201521109470.8U CN201521109470U CN205302176U CN 205302176 U CN205302176 U CN 205302176U CN 201521109470 U CN201521109470 U CN 201521109470U CN 205302176 U CN205302176 U CN 205302176U
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Abstract
The utility model discloses a many buttons reset circuit and have electronic product of button that resets is provided with N individual reset button, a N current -limiting resistor and a N diode, N is for being greater than 1 positive integer, the individual button that resets of N is established ties with a N current -limiting resistor one -to -one, forms N strip series branch, N strip series branch is connected respectively between power and ground wire, be connected to reset in the N strip series branch button and current -limiting resistor's intermediate node, the negative pole connection reset signal output of a N diode positive pole one -to -one of a N diode. The utility model discloses a set up a plurality of buttons that restore to the throne on the electronic product, if and only if when all buttons that restore to the throne are pressed simultaneously, and the system just carries out reset operation, because the electronic product is at the normal use in -process, the probability that a plurality of buttons that restore to the throne were pressed simultaneously is extremely low, consequently, can solve the system's mistake that results in because of the user's maloperation problem that restores to the throne basically, has improved system's reliability of operation.
Description
Technical field
This utility model belongs to electronic circuit technology field, relates to a kind of reset circuit, specifically, relates to a kind of utilize reset key that electronic product is carried out the circuit design of reset operation.
Background technology
Reset circuit is that one is widely used in electronic product, the custom-designed tandem circuit for raising electronic product reliability of operation. There is the situation of software stuck (deadlock) in a lot of electronic products occasional in running, when running into this situation, if without manipulable hardware reset button or other resetting means, then can only take the mode that direct power-off or machine of tearing open are reprocessed that systems soft ware is resetted, make system roll-back, not only troublesome poeration, but also temporal unnecessary waste can be caused. Therefore, electronic product designs reset circuit particularly necessary.
Existing reset circuit is mostly key reset circuit, i.e. designs independent reset key on electronic product, is specifically designed to reset operation. This reset key generally only arranges one, when system is stuck, by pressing described reset key, can reset by Control System Software, restarts operation. Electronic product adopts this key reset circuit design; often occur electronic product in normal course of operation due to user imprudence press reset key; and cause that systems soft ware enters the situation of reset state mistakenly, thus have impact on the experience of the properly functioning of electronic product and user.
Maloperation in order to avoid user, reset key is embedded in the housing of product by some electronic product completely, namely designs reset pin hole on the housing of electronic product, is built in by reset key in reset pin hole, by triggering the reset key in pin hole, control system reset. This design by being arranged at the not accessible position of user by reset key, although the problem that can solve by mistake to reset, but user is when performing reset operation every time, a kind of needlelike object must be found to extend in reset pin hole, just can touch reset key, performing reset operation, this adds user undoubtedly and performs the difficulty of reset operation.
Summary of the invention
The purpose of this utility model is in that to provide a kind of many key reset circuit, while facilitating user to perform reset operation, it is possible to reduce the probability occurred that by mistake resets as much as possible.
For solving above-mentioned technical problem, this utility model is achieved by the following technical solutions:
A kind of many key reset circuit, are provided with N number of reset key, N number of current-limiting resistance and N number of diode, and described N is the positive integer more than 1; Described N number of reset key is connected with N number of current-limiting resistance one_to_one corresponding, forms N bar series arm, and described N bar series arm is connected between power supply and ground wire; The anode of N number of diode is connected in N bar series arm reset key and the intermediate node of current-limiting resistance correspondingly, and the negative electrode of N number of diode connects reset signal outfan.
Further, when described current-limiting resistance is connected between described power supply and reset key, when described reset key is connected between current-limiting resistance and ground wire; Described reset key should select the normally opened button of non-self-lock-ing, when adopting this circuit design mode, by the reset signal Low level effective of described reset signal outfan output. And when described reset key is connected between described power supply and current-limiting resistance, when described current-limiting resistance is connected between reset key and ground wire; Described reset key should select the normally closed button of non-self-lock-ing, when adopting this circuit design mode, by the reset signal Low level effective of described reset signal outfan output.
In order to eliminate the issuable misoperation of key jitter, it is preferable that by described reset signal outfan by filter capacitor ground connection, to filter the shake waveform in reset signal, it is ensured that the reset signal exported by reset signal outfan is stable.
In order to ensure the balance that N bar circuit branch works, described N number of reset key preferably employs the mechanical key of same model, and described N number of current-limiting resistance preferably employs the resistive element of similar resistance, and described N number of diode preferably employs the switching diode of same model.
Further, described reset signal outfan is connected the reset pin of a control unit, export reset signal to described control unit, to control the reset of described control unit.
Based on above-mentioned many key reset circuit, this utility model also proposed a kind of electronic product with reset key, is provided with N number of reset key, N number of current-limiting resistance and N number of diode, and described N is the positive integer more than 1; Described N number of reset key is connected with N number of current-limiting resistance one_to_one corresponding, forms N bar series arm, and described N bar series arm is connected between power supply and ground wire; The anode of N number of diode is connected in N bar series arm reset key and the intermediate node of current-limiting resistance correspondingly, and the negative electrode of N number of diode connects reset signal outfan.
Preferably, as described N=2, when being namely provided with two reset keys on electronic product, consider that user is when handheld electric products, finger can touch the opposite sides of electronic product simultaneously, if two reset keys being laid on the same side of electronic product or on relative two sides of the electronic product that is placed in, then probably there will be false triggering. On two sides adjacent on the housing of electronic product in consideration of it, the reset key that two described is preferably placed in by this utility model, to reduce the probability of maloperation.
As described N > 2, when being namely provided with the reset key of three or more than three on electronic product, owing to the quantity of reset key is more, even if user's handheld electric products, the probability simultaneously pressing all reset keys inadvertently is also only small, therefore, for the consideration facilitating user to perform reset operation, on this utility model two sides that to be preferably placed in by described N number of reset key on the housing of electronic product relative, in order to user manipulates.
Preferably, described electronic product is portable type electronic product, and described power supply is the DC source that the battery in electronic product exports or DC source conversion generation battery exported via the power circuit in electronic product.
Compared with prior art, advantage of the present utility model and have the benefit effect that this utility model passes through to arrange multiple reset key on electronic product, if and only if when all of reset key is pressed simultaneously, system just performs reset operation, owing to electronic product is in normal use procedure, the probability that multiple reset keys are pressed simultaneously is extremely low, therefore the system reset issues by mistake caused because of user misoperation can substantially be solved, while improving system operation reliability, also solve systems soft ware card reparation problem after death. In addition, many key reset circuit of the present utility model design is simple, cost is low, it is easily achieved, can increase or delete the quantity of reset key according to actual needs easily, it is suitably applied in and be there is a need in the design of electronic products that operation button carries out hardware reset, to improve the experience of user.
After reading in conjunction with the accompanying the detailed description of this utility model embodiment, other features of the present utility model and advantage will become clearer from.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of embodiment of the tandem circuit of the proposed many key reset circuit of this utility model;
Fig. 2 is based on the circuit theory diagrams of a kind of embodiment of the reset circuit with three reset keys of the tandem circuit design shown in Fig. 1;
Fig. 3 is based on the circuit theory diagrams of a kind of embodiment of the reset circuit of two reset key designs;
Fig. 4 is based on the circuit theory diagrams of a kind of embodiment of the reset circuit of four reset key designs;
Fig. 5 is the circuit theory diagrams of another embodiment of the tandem circuit of the proposed many key reset circuit of this utility model;
Fig. 6 is based on the circuit theory diagrams of a kind of embodiment of the reset circuit with three reset keys of the tandem circuit design shown in Fig. 5;
Fig. 7 is two shown in Fig. 3 reset key installation position schematic diagram on electronic product;
Fig. 8 is three shown in Fig. 2 or Fig. 6 reset key installation position schematic diagram on electronic product.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in more detail.
The present embodiment is for the electronic product adopting the design of button resetting technique, propose a kind of many buttons resetting technique, by laying multiple reset key on electronic product, and design reset circuit and only just export effective reset signal when described multiple reset keys are all pressed, Control System Software resets and restarts, user thus can be greatly reduced the probability of maloperation occurs, solve the problem that systems soft ware resets by mistake.
In order to make different electronic products can be actually needed, according to self, the quantity increasing or deleting reset key easily, the present embodiment is when designing described reset circuit, take into full account the extensibility of circuit design, adopt the mode based on a reset key design basis circuit, to reach to simplify the purpose of circuit design.
Below by two specific embodiments, described tandem circuit and the physical circuit design of many key reset circuit and the operation principle that design based on described tandem circuit are described in detail.
Embodiment one
Fig. 1 illustrates the one of which design of tandem circuit.In Fig. 1, S is reset key, it is preferred to use the mechanical switch open in usual (that is, the normally opened button of non-self-lock-ing) without auto-lock function carries out circuit design; R is current-limiting resistance; D is diode. After described reset key S is connected with current-limiting resistance R, it is connected between power supply VCC and ground wire, the anode of diode D is connected to the intermediate node of reset key S and current-limiting resistance R, and the negative electrode of diode D connects reset signal outfan RESET, for output reset signal.
A kind of preferred design as the present embodiment, it is preferable that described current-limiting resistance R is connected between power supply VCC and reset key S, and reset key S is connected between current-limiting resistance R and ground wire, as shown in Figure 1. When reset key S is not pressed, power supply VCC acts on the anode of diode D by current-limiting resistance R, controls diode D conducting, and putting reset signal is invalid high level state. When reset key S is pressed, the anode potential of diode D is pulled down to ground, and diode D reversely ends, and putting reset signal is effective low level state.
In the present embodiment, described power supply VCC is DC source, it is possible to provided by the power circuit in electronic product. It is the portable type electronic products such as mobile phone, PAD, intelligent watch for electronic product, described DC source VCC can be directly provided, it is also possible to provide after the DC source that battery exports being changed via the power circuit in electronic product by the battery in electronic product. This is not specifically limited by the present embodiment.
Based on the tandem circuit shown in Fig. 1, for needing to arrange the electronic product of three reset keys, it is possible to the tandem circuit shown in Fig. 1 to be carried out three tunnel extensions, form three key reset circuit as shown in Figure 2. In Fig. 2, S1, S2, S3 are the reset key that three non-self-lock-ing are open in usual; R1, R2, R3 are the current-limiting resistance of series connection corresponding to described three reset keys S1, S2, S3 respectively; D1, D2, D3 are the diode connected one to one with the intermediate node of three series arms respectively, and the negative electrode of described diode D1, D2, D3 is connected to reset signal outfan RESET. Described reset signal outfan RESET is connected with the control unit in electronic product, exports reset signal to the reset pin of control unit, when systems soft ware is stuck, to control described control unit and to reset.
Adopting the electronic product that three key reset circuit as shown in Figure 2 design, low level resets, and its operation principle is as follows:
When three reset keys S1, S2, S3 being arranged on electronic product all do not press, diode D1, D2, D3 turn on, and now, the current potential of reset signal outfan RESET is high level, and electronic product does not perform reset operation.
When three reset keys S1, S2, S3 in Fig. 2 have any one to be pressed, when other two is not pressed, the diode reverse cut-off of connection corresponding to the reset key being pressed, other two diode still maintains conducting state, now, the current potential of reset signal outfan RESET is still high level, and therefore electronic product does not perform reset operation.
When three reset keys S1, S2, S3 in Fig. 2 have any two to be pressed, remain one when not being pressed, two diode reverse cut-offs connecting corresponding to the reset key being pressed, a remaining diode still maintains conducting state, now, the current potential of reset signal outfan RESET is still high level, and therefore electronic product does not perform reset operation.
When three reset keys S1, S2, S3 being arranged on electronic product are all pressed, diode D1, D2, D3 all reversely end, now, the jump in potential of reset signal outfan RESET becomes low level, i.e. effective status, controls electronic product and performs reset operation, makes the system program that in electronic product, control unit is run reset, then when software is stuck, it is achieved the reparation to electronic product.
In order to prevent user when pressing reset key S1, S2, S3, cause that because of key jitter misoperation occurs in system, the present embodiment is connected a filter capacitor C1 preferably between described reset signal outfan RESET and ground wire, the capacitance of described filter capacitor C1 is preferably 100nF, to filter shake waveform, it is ensured that stablizing of reset signal waveform.
It is of course also possible to the tandem circuit shown in Fig. 1 is carried out two-way extension, to form the reset circuit with two-way reset key S4, S5, as shown in Figure 3. It is equally possible that the tandem circuit shown in Fig. 1 to be carried out four tunnel extensions, to form the reset circuit with four road reset key S6, S7, S8, S9, as shown in Figure 4. The concrete annexation of the many key reset circuit shown in Fig. 3, Fig. 4 and operation principle are referred to above-mentioned being specifically described three key reset circuit shown in Fig. 2, and the present embodiment is in this not reinflated explanation.
Embodiment two
Fig. 5 illustrates another design of tandem circuit. In Fig. 5, S ' is reset key, it is preferred to use the normally closed type mechanical switch (that is, the normally closed button of non-self-lock-ing) without auto-lock function carries out circuit design; R ' is current-limiting resistance; D ' is diode. After described reset key S ' is connected with current-limiting resistance R ', it is connected between power supply VCC and ground wire, the anode of diode D ' is connected to the intermediate node of reset key S ' and current-limiting resistance R ', and the negative electrode of diode D ' connects reset signal outfan RESET, for output reset signal.
A kind of preferred design as the present embodiment, it is preferable that be connected between power supply VCC and current-limiting resistance R ' by described reset key S ', is connected between reset key S ' and ground wire by current-limiting resistance R ', as shown in Figure 2. When reset key S ' is not pressed, reset key S ' keeps normally off, and power supply VCC acts on the anode of diode D ' by reset key S ', controls diode D ' conducting, and putting reset signal is invalid high level state. When reset key S ' is pressed, reset key S ' disconnects, and the anode potential of diode D ' is pulled down to ground by current-limiting resistance R ', and diode D ' reversely ends, and putting reset signal is effective low level state.
Based on the tandem circuit shown in Fig. 5, for needing to arrange the electronic product of three reset keys, it is possible to the tandem circuit shown in Fig. 5 to be carried out three tunnel extensions, form three key reset circuit as shown in Figure 6. In Fig. 6, S1 ', S2 ', S3 ' are the reset key of three non-self-lock-ing normally closed types; R1 ', R2 ', R3 ' are the current-limiting resistance of series connection corresponding to three described reset key S1 ', S2 ', S3 ' respectively; D1 ', D2 ', D3 ' are the diode connected one to one with the intermediate node of three series arms respectively, by three described diode D1 ', D2 ', D3 ' negative electrode be connected to reset signal outfan RESET. Described reset signal outfan RESET can be connected with the control unit in electronic product, to export reset signal to the reset pin of control unit, then when systems soft ware is stuck, resets for controlling the systems soft ware in described control unit, restarts operation.
Adopting the electronic product that three key reset circuit as shown in Figure 6 design, low level resets, and its operation principle is as follows:
When three reset key S1 ', S2 ', S3 ' being arranged on electronic product all do not press, three reset key S1 ', S2 ', S3 ' are all kept closed, now, diode D1 ', D2 ', D3 ' turn on, the current potential putting reset signal outfan RESET is high level, thus electronic product does not perform reset operation.
When three reset key S1 ', S2 ', S3 ' in Fig. 6 have any one to be pressed, and other two is not when being pressed, namely one of them reset key disconnects, when two other reset key is still kept closed, the diode reverse cut-off of connection corresponding to the reset key being pressed, other two diode remains on state. Now, the current potential of reset signal outfan RESET is still high level, and therefore, electronic product does not perform reset operation.
When three reset key S1 ', S2 ', S3 ' in Fig. 6 have any two to be pressed, remain one when not being pressed, namely two of which reset key disconnects, when another one reset key is still kept closed, two diode reverse cut-offs connecting corresponding to the reset key being pressed, a remaining diode remains on state. Now, the current potential of reset signal outfan RESET is still high level, and therefore, electronic product does not perform reset operation.
When three reset key S1 ', S2 ', S3 ' being arranged on electronic product are all pressed, three reset key S1 ', S2 ', S3 ' are in off-state, now, three diode D1 ', D2 ', D3 ' all reversely end, and the jump in potential of reset signal outfan RESET becomes low level, i.e. effective status, control electronic product and perform reset operation, the system program that in electronic product, control unit is run is made to reset, then when software is stuck, it is achieved the reparation to electronic product.
Same, at described reset signal outfan RESET it is also preferred that connect filter capacitor C1 further, to play the effect eliminating key jitter.
Certainly, based on the tandem circuit shown in Fig. 5, two-way, four tunnels or more multichannel extension can also be carried out, to form the reset circuit with N road reset key, the concrete annexation of its circuit and operation principle can refer to above-mentioned illustrating three key reset circuit shown in Fig. 6, and the present embodiment is in this not reinflated explanation.
In order to ensure the balance of N number of tandem circuit work in many key reset circuit, N number of described reset key preferably employs the mechanical key of same model; N number of described current-limiting resistance preferably employs the resistive element of similar resistance, for instance resistance is the conventional resistive of 1K ��; N number of described diode preferably employs the switching diode of same model, to improve the stability of reset circuit work.
For prevent further user normal use electronic product time, it is not intended to being triggered by N number of reset key simultaneously, cause the generation of electronic product reset case by mistake, N number of reset key installation position on electronic product has been also carried out particular design by the present embodiment.
For only arranging the electronic product of two reset keys; consider that user is when handheld electric products operates; such as, when handheld mobile phone call or hand-held PAD see video; finger often touches the opposite sides of electronic product simultaneously; if two reset keys being laid on the same side of electronic product or on relative two sides of the electronic product that is placed in, then the problem that probably there will be false triggering. Given this, the present embodiment is for the electronic product being provided only with two reset keys S4, S5, as shown in Figure 7, preferably reset key S4, S5 that two described are placed on adjacent two sides on the housing of electronic product, such as being placed in the upper side edge of electronic product and right edge, owing to user is when handheld electric products carries out normal operating, the probability that two handss grip the upside of electronic product and right side simultaneously is almost nil, therefore, it can greatly reduce the odds that by mistake resets.
For being provided with the electronic product of three or more than three reset keys, owing to the quantity of reset key is more, even if user's handheld electric products, the probability simultaneously pressing all reset keys inadvertently is also only small, therefore, for the consideration facilitating user to perform reset operation, on the present embodiment two sides that to be preferably placed in by N number of reset key on the housing of electronic product relative, in order to user manipulates. As Fig. 8 is provided with the situation of three reset keys S1, S2, S3, it is possible to one of them reset key S1 is laid on the left side of electronic product; Two other reset key S2, S3 are laid in the right edge of electronic product, and one upper, one under, user only can need to press whole reset key S1, S2, S3 by the both hands of oneself simultaneously, completes reset operation.
Certainly; described above is not to restriction of the present utility model; this utility model is also not limited to the example above, the change made in essential scope of the present utility model of those skilled in the art, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (10)
1. key reset circuit more than a kind, it is characterised in that: being provided with N number of reset key, N number of current-limiting resistance and N number of diode, described N is the positive integer more than 1; Described N number of reset key is connected with N number of current-limiting resistance one_to_one corresponding, forms N bar series arm, and described N bar series arm is connected between power supply and ground wire; The anode of N number of diode is connected in N bar series arm reset key and the intermediate node of current-limiting resistance correspondingly, and the negative electrode of N number of diode connects reset signal outfan.
2. many key reset circuit according to claim 1, it is characterised in that: described current-limiting resistance is connected between described power supply and reset key, and described reset key is connected between current-limiting resistance and ground wire; Described reset key is the normally opened button of non-self-lock-ing, by the reset signal Low level effective of described reset signal outfan output.
3. many key reset circuit according to claim 1, it is characterised in that: described reset key is connected between described power supply and current-limiting resistance, and described current-limiting resistance is connected between reset key and ground wire; Described reset key is the normally closed button of non-self-lock-ing, by the reset signal Low level effective of described reset signal outfan output.
4. many key reset circuit according to claim 1, it is characterised in that: described reset signal outfan passes through filter capacitor ground connection.
5. many key reset circuit according to claim 1, it is characterised in that: described N number of reset key is the mechanical key of same model, and described N number of current-limiting resistance is the resistive element of similar resistance, and described N number of diode is the switching diode of same model.
6. many key reset circuit according to any one of claim 1 to 5, it is characterised in that: described reset signal outfan connects the reset pin of a control unit, exports reset signal to described control unit.
7. an electronic product with reset key, it is characterised in that: arrange just like the many key reset circuit according to any one of claim 1 to 6.
8. the electronic product with reset key according to claim 7, it is characterised in that: described N=2, on two described reset keys, two sides that to be placed on the housing of electronic product adjacent.
9. the electronic product with reset key according to claim 7, it is characterised in that: as described N > 2, on described N number of reset key two sides that to be placed on the housing of electronic product relative.
10. the electronic product with reset key according to any one of claim 7 to 9, it is characterized in that: described electronic product is portable type electronic product, described power supply is the DC source that the battery in electronic product exports or DC source conversion generation battery exported via the power circuit in electronic product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521109470.8U CN205302176U (en) | 2015-12-29 | 2015-12-29 | Many buttons reset circuit and have electronic product of button that resets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521109470.8U CN205302176U (en) | 2015-12-29 | 2015-12-29 | Many buttons reset circuit and have electronic product of button that resets |
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| Publication Number | Publication Date |
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| CN205302176U true CN205302176U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521109470.8U Withdrawn - After Issue CN205302176U (en) | 2015-12-29 | 2015-12-29 | Many buttons reset circuit and have electronic product of button that resets |
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| CN (1) | CN205302176U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425927A (en) * | 2015-12-29 | 2016-03-23 | 青岛歌尔声学科技有限公司 | Multi-key reset circuit and electronic product provided with same |
-
2015
- 2015-12-29 CN CN201521109470.8U patent/CN205302176U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425927A (en) * | 2015-12-29 | 2016-03-23 | 青岛歌尔声学科技有限公司 | Multi-key reset circuit and electronic product provided with same |
| CN105425927B (en) * | 2015-12-29 | 2019-03-12 | 歌尔智能科技有限公司 | More key reset circuits and electronic product with reset key |
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Granted publication date: 20160608 Effective date of abandoning: 20190312 |