CN202887050U - Real-time clock circuit and player - Google Patents
Real-time clock circuit and player Download PDFInfo
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- CN202887050U CN202887050U CN 201220589153 CN201220589153U CN202887050U CN 202887050 U CN202887050 U CN 202887050U CN 201220589153 CN201220589153 CN 201220589153 CN 201220589153 U CN201220589153 U CN 201220589153U CN 202887050 U CN202887050 U CN 202887050U
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- 239000013078 crystal Substances 0.000 claims description 5
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 10
- 238000007599 discharging Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 239000000047 product Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
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Abstract
The utility model discloses a real-time clock circuit and a player. The real-time clock circuit and the player comprise a clock chip, a power source module and a charging and discharging element, wherein the power source module outputs direct current to a power source end of the clock chip and the charging and discharging element when electronic equipment starts and operates, a positive pole of the charging and discharging element is connected with the power source end of the clock chip and provides power for the clock chip when the electronic equipment stops, and a switching diode is further connected between the positive pole of the charging and discharging element and the power source module. According to the real-time clock circuit and the player, the charging and discharging element is adopted to replace a disposable battery to specifically design the clock circuit, and therefore the real-time clock circuit has the advantages of being simple in structure, low in cost, high in reliability, reusable and the like. When applied to the player, especially an outdoor advertisement player product, the real-time clock circuit well resolves the problem that after the outdoor player is used for a long time, a user needs to call an after-sale worker to replace the battery manually, and therefore the difficulty of after-sale service is lowered.
Description
Technical field
The utility model belongs to the timing device technical field, specifically, and the player that relates to a kind of real time clock circuit and adopt described real time clock circuit design.
Background technology
Be accompanied by the day by day fierce of market competition between the continuous reinforcement of businessman's brand awareness and the like product, advertisement player arises at the historic moment and has obtained fast development.Existing advertisement player, particularly outdoor advertising player owing to needing the functional requirements such as automatic switching, playing advertisement at fixed time, therefore need equipment can obtain in real time clock information, start shooting on time, shut down with the control complete machine.
In order to satisfy the functional requirement of advertisement player timed power on/off, for the advertisement player of the network edition, can by the mode of networking, from network, obtain clock information.But for the advertisement player of standalone version or be applied in network edition advertisement player in the place that to network, then can only in equipment, design real time clock circuit and carry out timing, with the required clock information of generation system.
It is the real time clock circuit power supply when advertisement player shuts down that traditional real time clock circuit adopts disposable battery mostly, runs without interruption to keep real time clock circuit, obtains accurately timing time.The shortcoming of sort circuit design is: after advertisement player used a period of time, battery had not just had electricity.Businessman need to contact the professional person and change battery at this moment, and Adjustment System time again, could so that advertisement player drops into normal operation again, not only lose time and energy, and can cause the interruption of advertisement player operation, cause to a certain degree loss to businessman.
Summary of the invention
The purpose of this utility model is to provide a kind of real time clock circuit that can run without interruption for a long time, to avoid changing the trouble of battery, effectively reduces the difficulty of after sale service, has guaranteed the accuracy of timing time.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of real time clock circuit is applied in the electronic equipment of discontinuity start operation, comprises clock chip, power module and discharges and recharges device; Described power module output DC source when electronic equipment start operation transfers to respectively power supply terminal and the described device that discharges and recharges of clock chip, the described positive pole that discharges and recharges device connects the power supply terminal of described clock chip, is described clock chip power supply when electronic equipment shuts down; Between the described positive pole that discharges and recharges device and power module, also be connected with a switching diode.
Further, the described power module of the anodic bonding of described switching diode, negative electrode connect respectively power supply terminal and the described positive pole that discharges and recharges device of described clock chip by current-limiting resistance, oppositely flow into power module to avoid electric current.
Preferably, the described device that discharges and recharges is farad capacitor or rechargeable battery.Be elected to when using farad capacitor, preferably adopt capacitance greater than the electrostatic double layer farad capacitor of 0.22F, to guarantee electronic equipment in the situation that shutdown reaches several days, still have enough electric weight to keep clock chip and run without interruption.
Further, the external crystal oscillator of described clock chip obtains reference clock signal by crystal oscillator.
Based on above-mentioned real time clock circuit structure, the utility model also provides a kind of player that adopts described real time clock circuit design, comprises power module, primary processor and the real time clock circuit and the display unit that are connected with described primary processor respectively; In described real time clock circuit, include clock chip and and discharge and recharge device, described power module connects external power source, the output DC source transfers to respectively power supply terminal and the described device that discharges and recharges of clock chip when player start operation, the described positive pole that discharges and recharges device connects the power supply terminal of described clock chip, is described clock chip power supply when player shuts down; Between the described positive pole that discharges and recharges device and power module, also be connected with a switching diode.
Preferably, the described device that discharges and recharges preferably adopts rechargeable battery or capacitance greater than the electrostatic double layer farad capacitor of 0.22F.
In order to make the normally operation during the player start of described primary processor, and during shutting down, enter the standby running status, to continue to obtain clock information, and then when arriving the on time, can control the player Auto Power On, satisfy the designing requirement of player timed power on/off, the utility model connects described power module the power supply terminal of primary processor by described switching diode, be the primary processor power supply when player is started shooting; The described positive pole that discharges and recharges device connects the power supply terminal of described primary processor, is the primary processor power supply when player shuts down, for primary processor provides standby power; Described primary processor output switch machine signal to an on-off element, the switch ways of described on-off element is connected between power module and the external power source, by controlling described on-off element break-make, to realize the switching on and shutting down control to described player.
Preferably, described primary processor preferably passes through I
2The C bus connects clock chip, with the receive clock signal.
Further, in described player, also be provided with the storer for the storage exhibition information, connect described primary processor; Described display unit preferably adopts liquid crystal display, with the form display advertisement content of video playback.
Compared with prior art, advantage of the present utility model and good effect are: the utility model adopts and discharges and recharges the specific design that device replacement disposable battery carries out real time clock circuit, have that circuit structure is simple, with low cost, reliability is high, can prolonged and repeated charging use etc. distinguishing feature, be applied to player, particularly in the outdoor advertising player product, need to contact the problem that personnel after sale manually change battery after can solving well that outdoor player is long-term and using, effectively reduce the difficulty of after sale service, conscientiously ensured the interests of businessman.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art.Apparently, the accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the circuit theory diagrams of a kind of embodiment of the real time clock circuit that proposes of the utility model;
Fig. 2 is the schematic block circuit diagram of a kind of embodiment of the player that proposes of the utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described.Obviously, described embodiment only is a part of embodiment in the utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making all other embodiment that obtain under the creative work prerequisite, all belong to the scope of the utility model protection.
For the advantage that makes technical solutions of the utility model is clearer, below in conjunction with drawings and Examples the utility model is explained.
Embodiment one, the present embodiment is in order to solve traditional real time clock circuit after long-time running, need manually to change the problem of battery, employing discharges and recharges the system that device carries out clock circuit, utilization discharge and recharge device can be prolonged and repeated the characteristic used of charging, can run without interruption for a long time to guarantee real time clock circuit.
The real time clock circuit of the present embodiment is applied in the electronic equipment of discontinuity start operation, for example needs in the advertisement player of timed power on/off, during the electronic equipment start, utilizes external electric energy for discharging and recharging the device charging, with storage power; And during the electronic equipment shutdown, then by discharging and recharging the device discharge, come to continue power supply for described real time clock circuit the designing requirement that runs without interruption to satisfy real time clock circuit.
For the described device that discharges and recharges, can select the energy storage devices such as rechargeable battery or farad capacitor.The present embodiment is following take farad capacitor as example, and concrete assembling structure and the principle of work thereof of described real time clock circuit is explained in detail.
Referring to shown in Figure 1, in the real time clock circuit of the present embodiment, be provided with one for generation of the clock chip N16 of real-time time, described clock chip N16 has the operation that powers on of direct supply when access at its power supply terminal VCC, and be crystal oscillator Z4 power supply by its X1, X2 terminal, and receive simultaneously the reference clock signal that crystal oscillator Z4 provides, and then the generation real-time time, the associated components in the supplied for electronic equipment is transferred use.
In order to provide long-term uninterrupted power supply to described clock chip N16, at electronic equipment start run duration, utilize the power module of electronic equipment internal to convert external power source (for example electric main) to clock chip N16 operation required direct supply Core3.3V, transfer on the one hand the power supply terminal VCC of clock chip N16, be clock chip N16 power supply; Transfer on the other hand farad capacitor C14, be farad capacitor C14 charging accumulation of energy.The power supply terminal VCC that the positive pole of farad capacitor C14 is connected clock chip N16 by current-limiting resistance R424, minus earth during the electronic equipment shutdown, for clock chip N16 continues power supply, is kept clock chip N16 continuous service.
Power flow power module for fear of discharging by farad capacitor C14 causes energy dissipation, preferably is connected a switching diode VD4 between the positive pole of described power module and farad capacitor C14, as shown in Figure 1.Terminal with the anodic bonding power module output DC source Core3.3V of described switching diode VD4, negative electrode connects the power supply terminal VCC of clock chip N16 by current-limiting resistance R422, and further connects the positive pole of farad capacitor C 14 by current-limiting resistance R424.Utilize the reverse cut-off characteristics of diode VD4, guarantee the correct flow direction of electric current.
In order to improve the stability of power supply, between the terminal of described power module output DC source Core3.3V and ground, be connected filter capacitor C273, between the power supply terminal VCC of clock chip N16 and ground, be connected filter capacitor C274, with the undesired signal in the filtering appts.
In the present embodiment, the capacity of described farad capacitor C14 can be according to the shutdown duration of electronic equipment and the concrete calculative determination of average power consumption of clock chip N16, the preferred system that adopts capacitance to carry out clock circuit greater than the electrostatic double layer farad capacitor of 0.22F is to satisfy the long-term need for electricity of clock chip N16.
The real-time time that produces by clock chip N16 can pass through I via the serial data pin SDA of clock chip N16
2The C bus transfer is to the associated components of electronic equipment internal, and for guaranteeing the synchronism of data transmission, by serial clock pin SCL and described associated components transmission system clock.
Be connected with INTB_6_6 respectively for the two-way look-at-me output pin INTA_2_2 of clock chip N16 and be connected power module by pull-up resistor R415 with R414, to be pulled to high level, 3.3V for example.
Certainly, described farad capacitor C14 also can adopt rechargeable battery to replace, during electronic equipment start, and the direct supply that the receives power module output accumulation of energy of charging, and during the electronic equipment shutdown, the output DC source is that clock chip N16 continues power supply.
When adopting rechargeable battery to carry out the specific design of described real time clock circuit, the resistance that is connected to the current-limiting resistance between the power supply terminal VCC of rechargeable battery and clock chip N16 should be slightly less than the current-limiting resistance R424 that is connected among Fig. 1 between farad capacitor C14 and the clock chip N16, to satisfy the power demands of clock chip N16.
The below take advertisement player (can certainly be other players that need timed power on/off) as described electronic equipment as example, come by a specific embodiment that the concrete application in electronic equipment is described in detail to described real time clock circuit.
Embodiment two, for the advertisement player of standalone version or be applied in network edition advertisement player in the place of to network, owing to needing timed power on/off, therefore real time clock circuit need to be set and come for system provides real-time time in advertisement player, to judge the moment that whether arrives start or shutdown.
The present embodiment after long-time the use, needs manually to change the trouble of battery for fear of traditional advertisement player, the real time clock circuit that proposes among the embodiment one is applied in the advertisement player, to satisfy the demand of the long-term normal operation of advertisement player.
Referring to shown in Figure 2, in the advertisement player of the present embodiment, be provided with primary processor CPU, power module, real time clock circuit and display unit.Wherein, display unit can be selected display, and showing with the form of video playback needs the exhibition information play, such as advertising message etc.; Also can select the Scrolling type advertisement lamp box, with the mode display advertisement publicity single page that rolls.The present embodiment take select liquid crystal display as described display unit as example, the Circuits System of described advertisement player consisted of be specifically described.
Embodiment one described real time clock circuit is applied in the advertisement player, passes through I
2The C bus realizes the communication that is connected between clock chip N16 and the primary processor CPU, primary processor CPU obtains real-time time by access clock chip N16, and then compare with predefined on time and unused time, start shooting or on time shutdown with the control advertisement player on time.In order to realize impedance matching, at described I
2Further series matching resistor R412, R413 in the C bus, as shown in Figure 1, to satisfy the designing requirement of system.
In advertisement player is during shutdown, still need primary processor CPU timer access clock chip N16, whether arrive the on time of setting to detect the current time, and then control system is started shooting accurately.Therefore, primary processor CPU during advertisement player shutdown in, can not directly cut off the power supply out of service, but need to enter standby mode of operation.In order to satisfy this designing requirement, the power supply mode that the present embodiment is copied clock chip N16 among the embodiment one designs the feed circuit of primary processor CPU, in namely during advertisement player start operation, when utilizing power module that the Alternating Current Power Supply of outside is converted to direct supply Core3.3V and transfers to clock chip N16 by switching diode VD4 and current-limiting resistance R422, be in the lump primary processor CPU power supply, satisfy the need for electricity of the normal operation of primary processor CPU start.And after advertisement player shutdown, then utilize the electric weight that stores in the daraf(reciprocal of farad) capacitor C 14 to continue as primary processor CPU power supply, be operated in need for electricity under the standby mode to satisfy primary processor CPU.
For the switch control of power module, can be realized by primary processor CPU control, as shown in Figure 2.Between power module and external power source, can be connected an on-off element K, specifically the switch ways of on-off element K can be connected between the input end and external power source of power module, the control end of on-off element K connects primary processor CPU, receives the switch controlling signal ON/OFF of primary processor CPU output.When primary processor CPU judges that according to the real-time time that receives arrival is during the on time, output switch control signal ON/OFF(is high level for example) switch ways of the described on-off element K of control is closed, external power source is accessed power module, and then convert the Alternating Current Power Supply of outside to direct supply by power module, be described primary processor CPU, clock chip N16 power supply, and be described farad capacitor C14 charging accumulation of energy.At this moment, machine system enters the start operational mode under the control of primary processor CPU, and CPU transfers the advertising message that needs broadcast by the connected storer of access, and then transfers to liquid crystal display by its LVDS interface, to play the ad content of businessman.When primary processor CPU judges that according to the real-time time that receives arrival is during the unused time, output switch control signal ON/OFF(is low level for example) switch ways of the described on-off element K of control disconnects, to cut off outside power supply, the control complete machine enters standby mode of operation.At this moment, because power module outage stops output DC source Core3.3V, thereby turn by farad capacitor C14 and continue as described clock chip N16 and CPU power supply, keep the system standby operation.
For the storer that is connected to described CPU periphery, can comprise the storage mediums such as DDR, serial FLASH, EEPROM, be respectively applied to boot, the application program of storage system and the advertising message that need to play etc., transfer operation and use for CPU.
For described on-off element K, can select the controllable switch element such as relay, controllable silicon to carry out the system of circuit, realize the break-make control to external power source, the present embodiment does not specifically limit this.
A kind of preferred design as the present embodiment, the preferred electrostatic double layer farad capacitor of 0.33F that adopts carries out the circuit system design of advertisement player as discharging and recharging device, advertisement player is because long-time regular running, power-off time is relatively short, therefore select the electrostatic double layer farad capacitor of 0.33F can keep system cut-off 7-10 days, be enough to satisfy the normal user demand of advertisement player, avoided the later stage need to change the manual service of movement battery.If meet the long-time obsolete situation of advertisement player, the farad capacitor electric weight then may occur exhausts, system time returns the situation of initialization time, only needing manually to control advertisement player this moment starts shooting again, be farad capacitor charging accumulation of energy, and reset system time and get final product, convenient and swift.
Certainly, also the real time clock circuit that embodiment one proposes can be applied in other playback equipments except advertisement player, for example be used for playing the information promulgating platform of flight or Bus Schedules, to avoid manually changing the trouble that battery brings.
Should be noted that; the above only is a kind of preferred implementation of the present utility model; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a real time clock circuit is applied in the electronic equipment of discontinuity start operation, it is characterized in that: comprise clock chip, power module and discharge and recharge device; Described power module output DC source when electronic equipment start operation transfers to respectively power supply terminal and the described device that discharges and recharges of clock chip, the described positive pole that discharges and recharges device connects the power supply terminal of described clock chip, is described clock chip power supply when electronic equipment shuts down; Between the described positive pole that discharges and recharges device and power module, also be connected with a switching diode.
2. real time clock circuit according to claim 1, it is characterized in that: the described power module of the anodic bonding of described switching diode, negative electrode connect respectively power supply terminal and the described positive pole that discharges and recharges device of described clock chip by current-limiting resistance.
3. real time clock circuit according to claim 1 and 2, it is characterized in that: the described device that discharges and recharges is farad capacitor or rechargeable battery.
4. real time clock circuit according to claim 3, it is characterized in that: described farad capacitor is that capacitance is greater than the electrostatic double layer farad capacitor of 0.22F.
5. real time clock circuit according to claim 3 is characterized in that: the external crystal oscillator of described clock chip, obtain reference clock signal.
6. a player comprises power module, primary processor and the real time clock circuit and the display unit that are connected with described primary processor respectively; It is characterized in that: in described real time clock circuit, include clock chip and and discharge and recharge device, described power module connects external power source, the output DC source transfers to respectively power supply terminal and the described device that discharges and recharges of clock chip when player start operation, the described positive pole that discharges and recharges device connects the power supply terminal of described clock chip, is described clock chip power supply when player shuts down; Between the described positive pole that discharges and recharges device and power module, also be connected with a switching diode.
7. player according to claim 6 is characterized in that: the described device that discharges and recharges is that rechargeable battery or capacitance are greater than the electrostatic double layer farad capacitor of 0.22F.
8. according to claim 6 or 7 described players, it is characterized in that: described power module connects the power supply terminal of primary processor by described switching diode, is that primary processor is powered when player start shooting; The described positive pole that discharges and recharges device connects the power supply terminal of described primary processor, is the primary processor power supply when player shuts down; Described primary processor output switch machine signal to an on-off element, the switch ways of described on-off element is connected between power module and the external power source.
9. according to claim 6 or 7 described players, it is characterized in that: described primary processor passes through I
2The C bus connects clock chip, receive clock signal.
10. according to claim 6 or 7 described players, it is characterized in that: in described player, also be provided with the storer for the storage exhibition information, connect described primary processor; Described display unit is liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220589153 CN202887050U (en) | 2012-11-09 | 2012-11-09 | Real-time clock circuit and player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220589153 CN202887050U (en) | 2012-11-09 | 2012-11-09 | Real-time clock circuit and player |
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| Publication Number | Publication Date |
|---|---|
| CN202887050U true CN202887050U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220589153 Expired - Lifetime CN202887050U (en) | 2012-11-09 | 2012-11-09 | Real-time clock circuit and player |
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| Country | Link |
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| CN (1) | CN202887050U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588688A (en) * | 2019-09-23 | 2019-12-20 | 珠海格力电器股份有限公司 | Clock control device, air conditioning system and clock control method thereof |
| WO2023141813A1 (en) * | 2022-01-26 | 2023-08-03 | 京东方科技集团股份有限公司 | Scheduled startup control method and electronic device |
-
2012
- 2012-11-09 CN CN 201220589153 patent/CN202887050U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588688A (en) * | 2019-09-23 | 2019-12-20 | 珠海格力电器股份有限公司 | Clock control device, air conditioning system and clock control method thereof |
| CN110588688B (en) * | 2019-09-23 | 2020-08-18 | 珠海格力电器股份有限公司 | Clock control device, air conditioning system and clock control method thereof |
| WO2023141813A1 (en) * | 2022-01-26 | 2023-08-03 | 京东方科技集团股份有限公司 | Scheduled startup control method and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
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| CX01 | Expiry of patent term |