CN202009468U - Set top box - Google Patents
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- CN202009468U CN202009468U CN2011200222121U CN201120022212U CN202009468U CN 202009468 U CN202009468 U CN 202009468U CN 2011200222121 U CN2011200222121 U CN 2011200222121U CN 201120022212 U CN201120022212 U CN 201120022212U CN 202009468 U CN202009468 U CN 202009468U
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Abstract
The embodiment of the utility model discloses a set top box which comprises a shell and a PCB (Printed Circuit Board) arranged in the shell, wherein a master chip and various peripheral circuits connected to the master chip are arranged on the PCB; a temperature monitoring module, which is used for monitoring a temperature in the set top box, is also arranged on the PCB; the temperature monitoring module is connected to the master chip; and the master chip comprises a device which confirms the present temperature level of the set top box according to the temperature monitored by the temperature monitoring module and a device which controls the set top box by adopting a temperature control strategy corresponding to the present temperature level of the set top box according to a preset logic correlation between the temperature level and the temperature control strategy. The set top box can efficiently monitor and control the temperature in the set top box and promote the practicability and market competitiveness of the set top box.
Description
Technical field
The utility model relates to the digital TV terminal technical field, relates in particular to a kind of set-top box.
Background technology
Along with the development of Digital Television, set-top box has also obtained fast development.At present, the function of set-top box from strength to strength, it not only can also provide interactive digital amusement, education and commercialization activity or the like for the user for the user provides digital television program, to satisfy the growing material and cultural needs of people.
The enhancing of set-top box functionality causes the power consumption of set-top box to increase, and causes the temperature in the set-top box to raise significantly, thereby influences the operate as normal of set-top box and the life-span that shortens set-top box, and therefore, the temperature control problem that solves in the set-top box is imperative.The temperature control scheme of existing set-top box mainly contains two kinds, and one is: set up fin in set-top box, adopt the mode of free convection that set-top box is dispelled the heat.The radiating effect of this kind mode is undesirable, and the heat in the set-top box is difficult for distributing, and the temperature in the set-top box is in the state of higher temperatures for a long time, influences the useful life of set-top box.It two is: set up fan in set-top box, adopt the temperature in the fan cooled set-top box.The radiating effect of this mode is pretty good, but sets up the cost that fan can significantly increase set-top box, and fan meeting generation noise in the temperature control process, and user's experience property is bad; In addition, because the work of fan causes the total power consumption in the set-top box to increase, reduced practicality.
The utility model content
The utility model embodiment technical problem to be solved is, a kind of set-top box is provided, and on the basis of saving the set-top box cost as far as possible, effectively the temperature in the set-top box is monitored and is controlled, and improves the practicality and the market competitiveness of set-top box.
In order to solve the problems of the technologies described above, the utility model embodiment provides a kind of set-top box, comprise housing, and be arranged on PCB(Printed Circuit Board in the described housing, printed circuit board (PCB)) plate, described pcb board is provided with master chip, and the various peripheral circuits that are connected with described master chip, also is provided with on the described pcb board:
Be used to monitor the temperature monitoring module of the temperature in the described set-top box, described temperature monitoring module is connected with described master chip;
Wherein, comprise the temperature that arrives according to described temperature monitoring module monitors in the described master chip, determine described other device of set-top box present located temperature level, and according to the default temperature rank and the logic corresponding relation of temperature control strategy, the device that adopts the temperature control strategy of described set-top box present located temperature rank correspondence that described set-top box is controlled.
Wherein, described temperature monitoring module is at least one temperature sensor, and described temperature sensor is connected to the general purpose I/O(Input/Output of described master chip, I/O) mouthful.
Wherein, described temperature sensor is the DS18B20 chip, and the 2nd pin of described DS18B20 chip is connected to the universaling I/O port of described master chip.
Wherein, described temperature monitoring module comprises:
Monitor the electric bridge of the temperature in the described set-top box;
The AD(Digital-to-Analog that is connected with described master chip with described electric bridge, digital-to-analogue conversion) chip, temperature in its described set-top box that described electric bridge is monitored is carried out digital-to-analogue conversion, and the temperature of the digital quantity that is converted to is sent to described master chip.
Wherein, described set-top box also comprises: the memory of the temperature rank that storage is default and the logic corresponding relation of temperature control strategy, it is connected with described master chip.
Wherein, described set-top box also comprises: the temperature alarm that is connected with described master chip.
Wherein, described set-top box also comprises:
Be connected in the timer on the described master chip, described timer is located in the described set-top box;
Wherein, also comprise in the described master chip according to the Current Temperatures of described set-top box and compare last temperature ascensional range, adjust the device of the timing of described timer in real time, and described when timing arrives, control described temperature monitoring module is carried out temperature monitoring to described set-top box device.
Wherein, described peripheral circuit is connected with described master chip by mains switch;
Described mains switch comprises: MosFet(Metal-Oxide-Semiconductor Field-Effect Transistor, field-effect transistor) and triode;
The source electrode of described MosFet is connected to the power end of described peripheral circuit, and the grid of described MosFet is connected to the collector electrode of described triode, and the base stage of described triode is connected to the I/O mouth of described master chip.
Wherein, described master chip also comprises: adopt the temperature control strategy of described set-top box present located temperature rank correspondence, control the device that described set-top box enters holding state.
Wherein, described master chip also comprises: adopt the temperature control strategy of described set-top box present located temperature rank correspondence, described mains switch is turn-offed in control, to close the device of described peripheral circuit.
Implement the utility model embodiment, have following beneficial effect:
The utility model adopts the temperature monitoring module that the temperature in the set-top box is monitored, adopt the master chip in the set-top box set-top box to be controlled according to the temperature that monitors, with the Current Temperatures in the adaline top box, because the temperature monitoring module is that temperature sensor or electric bridge add the AD chip, it is cheap, has saved the cost of set-top box as much as possible; Adopt one or more temperature sensors or electric bridge to add the AD chip, can obtain the temperature in the set-top box more exactly, be convenient to master chip and determine the temperature rank and the temperature rise situation of set-top box, thereby determine corresponding temperature control strategy, realized effective monitoring the temperature in the set-top box; Master chip carries out various control operations to set-top box, with the temperature regime of adaline top box, has realized the effective control to the temperature in the set-top box.Set-top box of the present utility model is simple in structure, practicality is high, the market competitiveness is strong.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below 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 other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of set-top box of the present utility model;
Fig. 2 is the connecting circuit schematic diagram of temperature sensor of the present utility model and master chip;
Fig. 3 is the circuit diagram of mains switch of the present 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 the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 1, be the structural representation of the embodiment of set-top box of the present utility model; Described set-top box comprises: housing 1 and pcb board (not shown), described pcb board is packaged in the described housing 1, be fixed with on the described pcb board: shown in master chip 10, temperature monitoring module 20, memory 30, temperature alarm 40, at least one mains switch 50(figure three, and only one of them is carried out label, be not limited to three in the practical application), shown at least one peripheral circuit 60(figure three, and only one of them is carried out label, is not limited to three in the practical application) and timer 70.
Described master chip 10 is packaged in the set-top box, it is the CPU(Central Processing Unit of described set-top box, central processing unit), (as: TS flows (Transport Stream to comprise various data to described set-top box in the described master chip 10, transport stream), temperature data) device handled, and the device that other modules of set-top box are dispatched and controlled.Need to prove that the various devices that described master chip 10 comprises are the circuit of logical device and/or digital device formation, described master chip 10 is carried out various operations and is realized various functions by they various devices that comprise.
Described temperature monitoring module 20 is located in the set-top box, and is connected with described master chip 10, is used to monitor the temperature in the described set-top box, and the temperature that monitors is sent to described master chip.
In the specific implementation, described temperature monitoring module 20 can be the combination of at least one group of electric bridge and AD chip, wherein, described electric bridge is located on the interior pcb board of described set-top box, be used to monitor the temperature in the described set-top box, the position of this electric bridge monitoring is the monitoring point in the described set-top box, and the temperature of the monitoring point that described electric bridge monitors is an analog quantity, the temperature of this analog quantity is transferred in the AD chip that is connected with described electric bridge carries out digital-to-analogue conversion, obtains the temperature of digital quantity; Wherein, described AD chip is connected with described master chip 10, and its temperature with the digital quantity that is converted to is sent to described master chip 10.Be understandable that, when described temperature monitoring module 20 is that one group of electric bridge adds the AD chip, comprise a monitoring point in the described set-top box, the temperature in the described set-top box is the temperature of this monitoring point; When described temperature monitoring module 20 adds the AD chip for many group electric bridges, comprise a plurality of monitoring points in the described set-top box, the temperature in the described set-top box is determined jointly by the temperature of a plurality of monitoring points.Need to prove,, adopt the said temperature monitoring mode can cause the circuit of pcb board complicated more, also increased the design cost of set-top box simultaneously owing to set up electric bridge.
Preferably, described temperature monitoring module 20 is at least one temperature sensor, and described temperature sensor is connected to the universaling I/O port of described master chip 10.In the practical application, but higher place (as: CPU, the DDR(Double Data Rate of temperature in the selector top box, the Double Data Rate synchronous DRAM), place such as power supply) described temperature sensor is set as the monitoring point, each temperature sensor is monitored the temperature of its monitoring point, place respectively, the temperature of the monitoring point that this monitors is a digital quantity, and the temperature of the digital quantity that each temperature sensor monitors oneself is sent to described master chip 10.Be understandable that, when described temperature monitoring module 20 is a temperature sensor, comprise a monitoring point in the described set-top box, the temperature in the described set-top box is the temperature of this monitoring point; When described temperature monitoring module 20 is a plurality of temperature sensor, comprise a plurality of monitoring points in the described set-top box, the temperature in the described set-top box is determined jointly by the temperature of a plurality of monitoring points.Adopt the temperature in the integrated temperature sensor monitors set-top box of numeral, only needing temperature sensor is connected with described master chip 10 to obtain higher monitoring accuracy, and circuit is simple, has controlled the design cost of set-top box effectively.Need to prove that this temperature sensor is preferably the DS18B20 chip,, be the connecting circuit schematic diagram of temperature sensor of the present utility model and master chip please in the lump referring to Fig. 2; As shown in Figure 2, temperature monitoring module 20 is two DS18B20 chips, the 1st pin ground connection of described DS18B20 chip, and the 2nd pin is connected to the universaling I/O port of described master chip, and the 3rd pin meets power supply VCC.
As shown in Figure 2, the communication mode of described DS18B20 chip is a unique line interface, only needs can realize the multi-point ability with described master chip 10 by an interface line (the 2nd pin of described DS18B20 chip), has simplified the application of districution temperature transducer.
Described memory 30 is connected with described master chip 10, is used to store the default temperature rank and the logic corresponding relation of temperature control strategy.
In the specific implementation, described memory 30 has been stored the default temperature rank and the logic corresponding relation of temperature control strategy, and wherein, the default temperature rank and the logic corresponding relation of temperature control strategy are: the corresponding unique a kind of temperature control strategy of any temperature rank.Particularly, the form that described memory 30 can be shown is stored the described default temperature rank and the logic corresponding relation of temperature control strategy, as following table:
Table one: temperature rank and temperature control policy logic mapping table
Last table is a described default temperature rank and an embodiment of temperature control policy logic corresponding relation, is described as follows:
" temperature rank " refers to the residing rank of temperature in the set-top box; " temperature range " refers to the number range of the current mean temperature of set-top box; " temperature control strategy " refers to the measure taked for the temperature of adaline top box.
Be understandable that only for giving an example, other situations can similarly be set in above-mentioned various settings, such as: the temperature rank can be set according to practical situations by the user, is not limited to four grades shown in the table one; And for example: temperature range can be set according to practical situations by the user, this temperature range can also be the number range of the Current Temperatures of each monitoring point of set-top box, perhaps is the Current Temperatures of each monitoring point of set-top box and the number range of the difference of the last temperature that monitors; For another example: the temperature control strategy also can be set according to practical situations, strategy as " closed portion leave unused peripheral circuit " is according to the commonly used of peripheral circuit or seldom is used for defining, this can also define according to the power consumption of peripheral circuit, as being set at " closing the peripheral circuit of power consumption " or the like greater than XX, but other situation similar analysis are not given unnecessary details at this.
After the temperature of each monitoring point that the described temperature monitoring module 20 that receives described master chip 10 transmits, deposit it in described memory 30 on the one hand, on the other hand, described master chip 10 is according to the temperature of described each monitoring point, determine described set-top box present located temperature rank, and described set-top box present located temperature rank is stored in the described memory 30.In addition, described master chip 10 is according to the numerical value of the temperature of each monitoring point that receives described temperature monitoring module 20 transmission, obtain the numerical value of the current mean temperature in the set-top box, from the above-mentioned table one of memory 30 storages, search the temperature range at the current mean temperature place of set-top box, thereby determine the residing temperature rank in each monitoring point, and then find the temperature control strategy of this temperature rank correspondence; Afterwards, described master chip 10 adopts this temperature control policy control set-top box, with the Current Temperatures in the adaline top box.Be understandable that described memory 30 also is used to store the current mean temperature of the set-top box that described master chip 10 obtains, and the master data that is used to store described set-top box, comprising: TS flow data or the like, do not give unnecessary details at this.
See also Fig. 1 again, described set-top box also comprises:
Described temperature alarm 40 is connected with described master chip 10, is used under the control of described master chip 10, is described set-top box output temperature warning message.
In the specific implementation, the television set that described temperature alarm 40 can be connected for described set-top box utilizes the display screen and/or the loudspeaker output temperature warning message of television set, and master chip 10 may command television screens show the temperature of each monitoring point as described; Or the current mean temperature of control television screen display machines top box; Or control television screen display machines top box present located temperature rank; Maybe when definite set-top box was in the first estate (serious high temperature), the control television screen showed all temps information, as " your set-top box CPU temperature is too high, please close! ", described master chip 10 is the scheduled time after the described temperature alarm of control 40 these informations of output, promptly forces set-top box to enter holding state according to the temperature control strategy, in this scheduled time the user can be under the prompting of this information closure plane top box initiatively; Or the loudspeaker of control television set are exported various prompt tones; Or the like, the output of 40 pairs of temperature alarming information of temperature alarm, heat radiation that can the call user's attention set-top box, the incidence of reduction accident effectively.
Described peripheral circuit 60 is connected with described master chip 10 by described mains switch 50, and described peripheral circuit 60 is corresponding one by one with described mains switch 50.
In the specific implementation, the peripheral circuit 60 of set-top box includes but not limited to: usb circuit, network port circuit, eSATA interface circuit, a plurality of video interface circuit and a plurality of audio interface circuit.During the set-top box operate as normal, a plurality of peripheral circuits 60 all are in idle state, such as: usually, the user only can use one road audio frequency and look interface circuit, and other audio-video interface circuit then are in idle state; For another example: usb circuit, network port circuit usually are in idle state and are not used by the user.If according to above-mentioned table one, the temperature level other places in determining set-top box are when second grade (serious high temperature), and all idle peripheral circuits 60 are closed in described master chip 10 controls; Temperature level other places in determining set-top box are when the tertiary gradient (general high temperature), the idle peripheral circuit 60 of described master chip 10 control closed portions, herein, described master chip 10 can be determined the order of closing according to the frequency of utilization of each idle peripheral circuit 60, as from untapped peripheral circuit 60, then at first be closed, the peripheral circuit 60 of normal use, then be closed at last, the quantity of the idle peripheral circuit 60 that described master chip 10 is closed can set in advance, and also can determine according to the actual power loss situation; Be understandable that, determine that according to the frequency of utilization of each idle peripheral circuit 60 closing sequence is only for giving an example herein, other situations, such as: can determine closing sequence according to the power consumption size of each idle peripheral circuit 60, what power consumption was big closes earlier, power consumption little after close, with the temperature in the reduction set-top box of prestissimo; But similar analysis under this situation is not given unnecessary details at this.
Particularly, described master chip 10 is controlled the power supply of each peripheral circuit 60 and is supplied with by controlling opening and turn-offing of each mains switch 50, thereby reaches the opening and closing of control peripheral circuit 60.Please, be the circuit diagram of mains switch of the present utility model in the lump referring to Fig. 3; Described mains switch 50 comprises: MosFetQ1, triode Q2, resistance R 1, R2, R3, R4 and R5, and capacitor C 1; Wherein, the source electrode of Q1 is connected to the power end VCC-w of described peripheral circuit 60 in succession; The drain electrode of Q1 is connected to power supply VCC; The grid of Q1 is connected to the collector electrode of Q2 by R3 and R4.The grounded emitter of Q2, the base stage of Q2 are connected to the I/O mouth of described master chip 10 by R5.
Because the output voltage of the I/O mouth of described master chip 10 is lower, this output voltage can't directly drive Q1 work, and this voltage drives Q1 and carries out operate as normal after Q2 amplifies.Be understandable that, between the I/O mouth and Q2 of described master chip 10, can connect pull-up resistor or pull down resistor according to actual needs, further strengthen the driving force of the I/O mouth output voltage of described master chip 10.
When needs are closed certain peripheral circuit 60, the mains switch 50 that described master chip 10 controls are connected with this peripheral circuit 60 turn-offs, particularly, the I/O mouth that described master chip 10 controls are connected with this mains switch 50 is closed, making this I/O mouth output voltage is 0, then the MosFet of this mains switch 50 can't be driven, and can't provide working power for this peripheral circuit 60, thereby realize closing this peripheral circuit 60.
Described timer 70 is arranged in the described set-top box, and is connected on the described master chip 10.
In the specific implementation, described temperature monitoring module 20 can be under the control of described master chip 10 timing working, 70 of described timers are used to provide timing, such as: carry out work if set described temperature monitoring module 20 timing with 30s under the control of described master chip 10, then when described timer 70 timing 30s arrive, the temperature of the described temperature monitoring module of described master chip 10 controls 20 monitoring monitoring points also is sent to described master chip 10, and described afterwards temperature monitoring module 20 quits work; When the timing 30s arrival next time of described timer 70, described master chip 10 is controlled described temperature monitoring module 20 again and is carried out work.In the present embodiment, described master chip 10 is compared last temperature ascensional range according to the Current Temperatures of described set-top box, adjust the timing of described timer 70 in real time, when timing arrives, 20 pairs of described set-top box of the described master chip 10 described temperature monitoring modules of control are carried out temperature monitoring, such as: if the current mean temperature that described master chip 10 obtains described set-top box is 18 degree, the mean temperature that a last 30s timing obtains described set-top box is 10 degree, then ascensional range is 8 degree, and frequency is every 30s rising 8 degree; Calculate like this, when next 30s timing arrives, the mean temperature of set-top box may be 26 degree, show that set-top box has been in the first estate (serious high temperature) a period of time, this will cause set-top box and have a strong impact on, therefore, described master chip 10 can be adjusted into 10s with the timing of timer 70, after then this timing arrives, when next 10s arrives, described master chip 10 is promptly controlled described temperature monitoring module 20 and again set-top box is carried out temperature monitoring, guarantees the operate as normal of set-top box as far as possible.
To the assembling and the operating principle of set-top box of the present utility model be described in detail below.
Set described temperature monitoring module 20 and comprise two temperature sensors, the default temperature rank of described memory 30 storages and the logic corresponding relation of temperature control strategy are above-mentioned table one, and described timer 70 initial timings are 30s.
One of them temperature sensor is located at CPU place in the set-top box, and another temperature sensor is located at the DDR place in the set-top box, and two temperature sensors are connected with master chip 10 respectively.Memory 30, temperature alarm 40 and timer 70 all are connected with described master chip 10.Each peripheral circuit 60 and each mains switch 50 are connected one to one, and mains switch 50 is connected to each I/O mouth of described master chip 10, promptly finished the assembling of set-top box of the present utility model.
After set-top box works on power, when first timing 30s of timer 70 arrives, two temperature sensors of master chip 10 controls carry out work, wherein, the temperature that the temperature sensor of CPU monitoring point records this monitoring point is 10 degree, the temperature that the temperature sensor of DDR monitoring point records this monitoring point is 12 degree, and two temperature sensors monitor self temperature respectively and are sent in the described master chip 10.Described master chip 10 is stored to the temperature that two temperature sensors transmit in the memory 30, and be 11 degree according to the current average temperature value that these two temperature obtain set-top box, above-mentioned table one according to storage in the memory 30, determine current second grade (serious high temperature) that is in of set-top box, full power switch 50 is judged in 10 controls of described master chip, to close all idle peripheral circuit 60, to reduce the temperature in the set-top box, simultaneously, described master chip 10 deposits current average temperature value 11 degree and the temperature rank of set-top box in the described memory 30 in, and control described temperature alarm 40 output temperature warning messages, so that being provided, the user notes the heat radiation of set-top box.
When second timing 30s of timer 70 arrives, two temperature sensors of master chip 10 controls carry out work, wherein, the temperature that the temperature sensor of CPU monitoring point records this monitoring point is 18 degree, the temperature that the temperature sensor of DDR monitoring point records this monitoring point is 20 degree, and two temperature sensors monitor self temperature respectively and are sent in the described master chip 10.Described master chip 10 is stored to the temperature that two temperature sensors transmit in the memory 30, and be 19 degree according to the current average temperature value that these two temperature obtain set-top box, above-mentioned table one according to storage in the memory 30, determine current second grade (serious high temperature) that is in of set-top box, 10 of described master chips keep all idle peripheral circuit 60 to be in closed condition, to reduce the temperature in the set-top box, simultaneously, described master chip 10 deposits current average temperature value 19 degree and the temperature rank of set-top box in the described memory 30 in, and control described temperature alarm 40 output temperature warning messages, so that being provided, the user notes the heat radiation of set-top box.Described master chip 10 is according to the ascensional range of these average temperature value 19 degree with the last average temperature value that monitors 11 degree of memory 30 storages, the timing of adjusting timer 70 is 10s, then after timer 70 arrives the timing of 10s, two temperature sensor work of described master chip 10 controls repeat above-mentioned steps.
Need to prove that above-mentioned only is for example, other applicable cases, such as: initial timing and adjusted timing can be set according to actual conditions; For another example: the position of monitoring point can be set according to actual needs, or the like, but similar analysis under above-mentioned other applicable cases is not given unnecessary details at this.
The utility model can monitor and control the temperature in the set-top box effectively, has improved the practicality and the market competitiveness of set-top box.
Description by the foregoing description, the utility model adopts the temperature monitoring module that the temperature in the set-top box is monitored, adopt the master chip in the set-top box set-top box to be controlled according to the temperature that monitors, with the Current Temperatures in the adaline top box, because the temperature monitoring module is that temperature sensor or electric bridge add the AD chip, it is cheap, has saved the cost of set-top box as much as possible; Adopt one or more temperature sensors or electric bridge to add the AD chip, can obtain the temperature in the set-top box more exactly, be convenient to master chip and determine the temperature rank and the temperature rise situation of set-top box, thereby determine corresponding temperature control strategy, realized effective monitoring the temperature in the set-top box; Master chip carries out various control operations to set-top box, with the temperature regime of adaline top box, has realized the effective control to the temperature in the set-top box.Set-top box of the present utility model is simple in structure, practicality is high, the market competitiveness is strong.
Above disclosed only is a kind of preferred embodiment of the utility model, certainly can not limit the interest field of the utility model with this, one of ordinary skill in the art will appreciate that all or part of flow process that realizes the foregoing description, and according to the equivalent variations that the utility model claim is done, the scope that still belongs to utility model and contained.
Claims (10)
1. a set-top box comprises housing, and is arranged on the pcb board in the described housing, and described pcb board is provided with master chip, and the various peripheral circuits that are connected with described master chip, it is characterized in that, also is provided with on the described pcb board:
Be used to monitor the temperature monitoring module of the temperature in the described set-top box, described temperature monitoring module is connected with described master chip;
Wherein, comprise the temperature that arrives according to described temperature monitoring module monitors in the described master chip, determine described other device of set-top box present located temperature level, and according to the default temperature rank and the logic corresponding relation of temperature control strategy, the device that adopts the temperature control strategy of described set-top box present located temperature rank correspondence that described set-top box is controlled.
2. set-top box as claimed in claim 1 is characterized in that, described temperature monitoring module is at least one temperature sensor, and described temperature sensor is connected to the universaling I/O port of described master chip.
3. set-top box as claimed in claim 2 is characterized in that, described temperature sensor is the DS18B20 chip, and the 2nd pin of described DS18B20 chip is connected to the universaling I/O port of described master chip.
4. set-top box as claimed in claim 1 is characterized in that, described temperature monitoring module comprises:
Monitor the electric bridge of the temperature in the described set-top box;
With the AD chip that described electric bridge is connected with described master chip, the temperature in its described set-top box that described electric bridge is monitored is carried out digital-to-analogue conversion, and the temperature of the digital quantity that is converted to is sent to described master chip.
5. as each described set-top box of claim 1-4, it is characterized in that, also comprise:
The memory of the temperature rank that storage is default and the logic corresponding relation of temperature control strategy, it is connected with described master chip.
6. set-top box as claimed in claim 5 is characterized in that, also comprises:
The temperature alarm that is connected with described master chip.
7. set-top box as claimed in claim 6 is characterized in that, also comprises:
Be connected in the timer on the described master chip, described timer is located in the described set-top box;
Wherein, also comprise in the described master chip according to the Current Temperatures of described set-top box and compare last temperature ascensional range, adjust the device of the timing of described timer in real time, and described when timing arrives, control described temperature monitoring module is carried out temperature monitoring to described set-top box device.
8. set-top box as claimed in claim 7 is characterized in that, described peripheral circuit is connected with described master chip by mains switch;
Described mains switch comprises: MosFet and triode;
The source electrode of described MosFet is connected to the power end of described peripheral circuit, and the grid of described MosFet is connected to the collector electrode of described triode, and the base stage of described triode is connected to the I/O mouth of described master chip.
9. set-top box as claimed in claim 8 is characterized in that, described master chip also comprises:
Adopt the temperature control strategy of described set-top box present located temperature rank correspondence, control the device that described set-top box enters holding state.
10. set-top box as claimed in claim 8 is characterized in that, described master chip also comprises:
Adopt the temperature control strategy of described set-top box present located temperature rank correspondence, described mains switch is turn-offed in control, to close the device of described peripheral circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011200222121U CN202009468U (en) | 2011-01-24 | 2011-01-24 | Set top box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200222121U CN202009468U (en) | 2011-01-24 | 2011-01-24 | Set top box |
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| CN202009468U true CN202009468U (en) | 2011-10-12 |
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| CN2011200222121U Expired - Fee Related CN202009468U (en) | 2011-01-24 | 2011-01-24 | Set top box |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123507A (en) * | 2011-11-18 | 2013-05-29 | 康佳集团股份有限公司 | Method for automatically controlling temperature in set-top box and equipment thereof |
| CN103997682A (en) * | 2014-05-13 | 2014-08-20 | 深圳市九洲电器有限公司 | Temperature control method and system of set top box |
| CN104869463A (en) * | 2014-02-21 | 2015-08-26 | 中兴通讯股份有限公司 | Set top box alarming method and set top box |
| CN104918102A (en) * | 2015-05-27 | 2015-09-16 | 成都市斯达鑫辉视讯科技有限公司 | Self-alarming set-top box with function of AV signal inputting and switching |
| CN106019172A (en) * | 2016-05-24 | 2016-10-12 | 深圳创维数字技术有限公司 | STB (set top box) performance parameter detection-display system and method |
| CN107659808A (en) * | 2017-09-30 | 2018-02-02 | 四川长虹电器股份有限公司 | A kind of method of television set SoC chip fault pre-alarming |
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2011
- 2011-01-24 CN CN2011200222121U patent/CN202009468U/en not_active Expired - Fee Related
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| CN103123507A (en) * | 2011-11-18 | 2013-05-29 | 康佳集团股份有限公司 | Method for automatically controlling temperature in set-top box and equipment thereof |
| CN104869463A (en) * | 2014-02-21 | 2015-08-26 | 中兴通讯股份有限公司 | Set top box alarming method and set top box |
| WO2015123980A1 (en) * | 2014-02-21 | 2015-08-27 | 中兴通讯股份有限公司 | Set-top box alarming method and set-top box |
| CN103997682A (en) * | 2014-05-13 | 2014-08-20 | 深圳市九洲电器有限公司 | Temperature control method and system of set top box |
| WO2015172624A1 (en) * | 2014-05-13 | 2015-11-19 | 深圳市九洲电器有限公司 | Set top box temperature control method and control system |
| CN104918102A (en) * | 2015-05-27 | 2015-09-16 | 成都市斯达鑫辉视讯科技有限公司 | Self-alarming set-top box with function of AV signal inputting and switching |
| CN106019172A (en) * | 2016-05-24 | 2016-10-12 | 深圳创维数字技术有限公司 | STB (set top box) performance parameter detection-display system and method |
| WO2017202109A1 (en) * | 2016-05-24 | 2017-11-30 | 深圳创维数字技术有限公司 | System for detecting and displaying performance parameters of set top box and method therefor |
| CN106019172B (en) * | 2016-05-24 | 2018-11-30 | 深圳创维数字技术有限公司 | A kind of the performance parameter detection display system and its method of set-top box |
| CN107659808A (en) * | 2017-09-30 | 2018-02-02 | 四川长虹电器股份有限公司 | A kind of method of television set SoC chip fault pre-alarming |
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