CN1222044A - Wireless Selective Call Receiver - Google Patents
Wireless Selective Call Receiver Download PDFInfo
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- CN1222044A CN1222044A CN98123812A CN98123812A CN1222044A CN 1222044 A CN1222044 A CN 1222044A CN 98123812 A CN98123812 A CN 98123812A CN 98123812 A CN98123812 A CN 98123812A CN 1222044 A CN1222044 A CN 1222044A
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- 238000007600 charging Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 5
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- 238000006243 chemical reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
一种能够向控制器提供充足电能并能够使其稳定操作的无线选呼接收机,其中DC/DC变换器的操作/非操作是由控制器输出的节电操作时序控制信号BS控制的,以便确定无线电部分的操作时序。当无线电部分不操作时,来自主电池的电能通过DC/DC变换器被从直流变为直流,并被提供给控制器和对可充电电池充电。可充电电池向控制器提供充足的电能。检测可充电电池的输出电压,当该电压低于一个固定的电压值时,停止从操作部分向控制器发出的中断。
A wireless selective call receiver capable of supplying sufficient power to a controller and enabling it to operate stably, wherein the operation/non-operation of a DC/DC converter is controlled by a power-saving operation sequence control signal BS output by the controller, so that Determine the timing of operations for the radio section. When the radio section is not operating, power from the main battery is converted from DC to DC by a DC/DC converter and supplied to the controller and to charge the rechargeable battery. A rechargeable battery provides sufficient power to the controller. Detect the output voltage of the rechargeable battery, and when the voltage is lower than a fixed voltage value, stop the interrupt from the operation part to the controller.
Description
The present invention relates to radio selective-calling receiver, specifically this radio selective-calling receiver can keep stable operation under the situation of power supply abundance.
In general, conventional radio selective-calling receiver adopts dry cell, works off and in order to extend the life of a cell, and has only when the ID data that receive corresponding to the receiver user, just the radio part is connected the reception data.Yet the controller of radio part is always in running order, is the operation timing of radio part.In order to make controller work, in present CPU, need the voltage of at least 2 volts, for voltage is provided, adopt step-up transformer type DC/DC converter for example shown in Figure 1.
In Fig. 1, make transistor 511 conductings or end by oscillator 512, when transistor 511 was in conducting state, the electric energy that battery 510 provides was stored in the coil 513, when transistor 511 was in cut-off state, electric energy was offered electric capacity 515 by diode 514.By these operations, produce the output voltage V out that raises at the two ends of electric capacity 515.
In this case, by the switching manipulation of transistor 511, comprised switching noise shown in Figure 2 in output waveform, the high order harmonic component of this switching noise is produced harmful effect by radiation to receiving sensory characteristic.
For example, the open No.HEI6-53883 of Japan Patent has disclosed a kind of radio selective-calling receiver, and as shown in Figure 3, it has avoided the harmful effect of the switching noise of DC/DC converter.
Fig. 3 is the block diagram of the conventional radio selective-calling receiver structure of expression.In Fig. 3, radio selective-calling receiver has radio part 501, be used for demodulation to received signal, controller 502, be used for controlling discontinuous operation, the signal of radio part 501 to controlling DC/DC converter 503 conduction and cut-off from the restituted signal decoding and the output of radio part 501, the main battery 504 of electric energy is provided and the rechargeable battery 505 of electric energy is provided to controller 502 to radio part 501.The moment conducting of DC/DC converter 503 before connecting radio part 501 becomes direct current with the power supply of main battery 504 from direct current, to rechargeable battery 505 chargings, and provides electric energy to controller 502.Operation part 506 is by user's operation disruption controller 502.
The following describes the course of work.The signal of 501 pairs of receptions of radio part amplifies and demodulation, and restituted signal is delivered to controller 502.502 pairs of restituted signal decodings of controller, and the conduction and cut-off control of control wireless portion 501 and control DC/DC converter 503, moment DC/DC converter 503 conductings before radio part 501 is connected are charged to rechargeable battery 505, and are provided electric energy to controller 502.When DC/DC converter 503 ended, rechargeable battery 505 provided electric energy to controller 502.Main battery 504 provides electric energy to radio part 501 and DC/DC converter 503.As mentioned above, the moment before radio part 501 is connected, provide electric energy by rechargeable battery 505 to controller 502, by 505 chargings of 503 pairs of rechargeable batteries of DC/DC converter, therefore can avoid the harmful effect of the switching noise of DC/DC converter 503.
Fig. 4 is the radio part 501 of the expression conventional radio selective-calling receiver that adopts POCSAG (postcode standardization suggestion group) form and the sequential chart of DC/DC converter 503 operations.Fig. 5 is the sequential chart after " A " part is expanded in the sequential chart of expression to Fig. 4, the variation of the output voltage of this expression rechargeable battery 505.As shown in the figure, the time sequential routine of DC/DC converter 503 is different fully with the time sequential routine of the radio part 501 shown in Fig. 5 (2), moment DC/DC converter 503 conductings before radio part 501 is connected, to rechargeable battery 505 chargings, provide power supply to controller 502, and DC/DC converter 503 by the time, rechargeable battery 505 to controller 502 provide fill electric energy.
Conventional radio selective-calling receiver has said structure.Shown in Fig. 5 (3), to end at an aDC/DC converter 503, radio part 501 is connected, because controller 502 current sinkings, the output voltage of rechargeable battery 505 descends gradually.This is corresponding to the change in voltage of expression between Fig. 5 (3) mid point " a " and " b ".Up to DC/DC converter 503 conducting once more, if controller 502 consumed current do not change, the output voltage that descends gradually of rechargeable battery 505 can not become the minimum operation voltage Vmin that is lower than controller 502 so.Yet at user Yu Dian " b " operation receiver, controller 502 consumed current increase sharply, the output voltage of rechargeable battery 505 sharply descends, become the minimum operation voltage Vmin that is lower than controller 502, shown in figure point " c ", produced the problem that makes controller 502 shut-down operations.
The time sequential routine of DC/DC converter 503 is different fully with the time sequential routine of radio part 501, therefore only DC/DC converter 503 is needed control signal SW, and this is a problem.
In addition, because the charging interval of rechargeable battery 505 is short, so the terminal voltage of rechargeable battery 505 returns to the required time of the voltage of enough driving governors 502 with regard to length.This also is a problem.
An object of the present invention is to provide a kind of radio selective-calling receiver, it can provide sufficient electric energy to make controller work, and can make controller keep stable operation.
In order to address the above problem, the invention provides a kind of radio selective-calling receiver, comprising: the radio part, this part receives radio signals from the outside by discontinuous operation, and to this radio signal demodulation; The main battery of partly powering to radio; Controller to divide the restituted signal decoding of demodulation at wireless part, produces the time sequential routine control signal that makes the discontinuous operation of radio part, and to radio part output signal; Rechargeable battery to the controller power supply; DC/DC converter, the time sequential routine control signal of origin self-controller are controlled its operation/not operation control, and when radio part not operation, and the electric energy of main battery is become direct current and provides electric energy to controller and rechargeable battery from direct current; And operation part, according to operator input signal controller is interrupted.
When the inoperation of radio part, make the conducting of DC/DC converter by the time sequential routine control signal of coming self-controller, the electric energy of main battery is become direct current from direct current, the direct current/direct current power of this conversion is sent to controller, and rechargeable battery is recharged.Utilize this operation, concerning the not operation phase than the operating period longer situation, can charge fully to rechargeable battery, enough electrical power storage are arranged in rechargeable battery, when the inoperation of DC/DC converter, rechargeable battery provides enough electric energy to controller.
By below in conjunction with accompanying drawing to the detailed description that the present invention did, purpose of the present invention and feature will be seen clearlyer.In the accompanying drawing:
Fig. 1 is the circuit diagram of the DC/DC transformer configuration that is used to boost of the conventional radio selective-calling receiver of expression;
Fig. 2 is the oscillogram of the DC/DC converter that is used to boost of the conventional radio selective-calling receiver of expression by the switching noise of switching manipulation on output waveform;
Fig. 3 is the block diagram of conventional radio selective-calling receiver;
Fig. 4 is the sequential chart of the operation of the radio part of the expression conventional radio selective-calling receiver that adopts the POCSAG form and DC/DC converter;
Fig. 5 is the sequential chart that the output voltage of operation part rechargeable battery when sending interruptive command of the conventional radio selective-calling receiver of expression changes;
Fig. 6 is the block diagram of an embodiment of radio selective-calling receiver of the present invention;
Fig. 7 is the controller of an embodiment of expression radio selective-calling receiver of the present invention and the flow chart of low-voltage testing circuit operation;
Fig. 8 is the sequential chart in the time sequential routine of the radio part of POCSAG signal format of POCSAG signal format and expression one embodiment of the present of invention and DC/DC converter;
Fig. 9 is the operation part of an embodiment of the expression radio selective-calling receiver of the present invention sequential chart that the output voltage of rechargeable battery changes when sending interruptive command; And
Figure 10 is the sequential chart in the time sequential routine of the radio part of FLEX signal format of FLEX signal format and expression one embodiment of the present of invention and DC/DC converter.
With reference to the accompanying drawings, describe the embodiment of radio selective-calling receiver of the present invention in detail.
Fig. 6 is the block diagram of one embodiment of the present of invention.In Fig. 6, radio selective-calling receiver comprises radio part 1, controller 2, DC/DC converter 3, rechargeable battery 4, main battery 5, operation part 6, low-voltage testing circuit 7 etc.Radio part 1 receives radio signals from the outside by discontinuous operation, and they is separated to be in harmonious proportion amplify.2 pairs of restituted signal decodings by 1 demodulation of radio part of controller produce the power save function timing control signal BS that makes 1 discontinuous operation of radio part, and export this signal to radio part 1.The power save function timing control signal BS control of DC/DC converter 3 origin self-controllers 2, operation and not operation, in the 1 not operation phase of radio part, the electric energy that main battery 5 is provided becomes direct current from direct current, delivers to controller 2 and rechargeable battery 4.The rechargeable electrical energy of rechargeable battery 4 is delivered to controller 2 and low-voltage testing circuit 7, and in addition, the electric energy of main battery 5 is also delivered to radio part 1.When the user operated, for example when the user connected the switch read message, operation part 6 interrupt control units 2 were operated.Low-voltage testing circuit 7 monitors the output voltage of rechargeable battery 4 always, when the output voltage of rechargeable battery 4 is lower than a fixed voltage Vt, stops the interruption of sending to controller 2 from operation part 6.
The operation of the radio selective-calling receiver that applies POCSAG signal format is described below.Fig. 7 is the flow chart of the operation of expression controller 2 of this radio selective-calling receiver and low-voltage testing circuit 7.Fig. 8 is the sequential chart in the time sequential routine of expression POCSAG signal format, this signal format is by a preamble and a plurality of batches, an a collection of synchronous code SC and eight frames of comprising, this figure also represents the radio part 1 of POCSAG signal format and the time sequential routine of DC/DC converter 3.Fig. 9 is the sequential chart of expression with the output voltage variation of the rechargeable battery 4 of " A " part expansion of Fig. 8.
The controller 2 of radio selective-calling receiver is operation chronologically always, detects the preamble shown in Fig. 8 (a), and this preamble is the repetition of " 1 " and " 0 ".Detect after this preamble, carry out detecting operation synchronous code SC.Detect after the synchronous code SC, controller 2 controllers 2 determine according to the ID that radio selective-calling receiver has radio part 1 at which frame is connected, and in this example, radio part 1 is connected at the 3rd frame.After second batch and second batch, do not receive synchronous code SC, radio part 1 has described the 3rd frame to connect.As mentioned above, radio part 1 discontinuous operation of radio selective-calling receiver, so that extending battery life, " connection " state of radio part 1 is shorter than " shutoff " state.
In this embodiment of radio selective-calling receiver, DC/DC converter 3 is carried out conduction and cut-off control by the power save function timing control signal BS of radio part 1.Shown in Fig. 8 (c), the time sequential routine of DC/DC converter 3 is time sequential routine anti-phase of the radio part 1 shown in Fig. 8 (b), when radio part 1 " shutoff ", and DC/DC converter 3 " conducting ".Utilize " shutoff " period of radio part 1, rechargeable battery 4 is by 3 chargings of DC/DC converter, therefore the charging interval is elongated, can keep the state that almost is full of, provide enough power supplys to controller 2, even the output voltage of rechargeable battery 4 descends, therefore can be quickly to rechargeable battery 4 chargings than conventional structure.
Below, adopt Fig. 7 and 9, describe the operation of the controller 2 of the operation that comprises low-voltage testing circuit 7 in detail.In Fig. 7, as mentioned above, utilize during " shutoff " of radio part 1, by 4 chargings of 3 pairs of rechargeable batteries of DC/DC converter, therefore, rechargeable battery 4 is in the state that is full of, and operation is from this state.The time sequential routine of DC/DC converter 3 is time sequential routine anti-phase of radio part 1, and therefore, when radio part 1 became " connection ", DC/DC converter 3 became " ending " (step S1 and S2).Because DC/DC converter 3 becomes " ending ", so controller 2 current sinkings, the output voltage of rechargeable battery 4 reduces gradually.This is corresponding to the variation of the output voltage of point " a " among Fig. 9 (3) and the rechargeable battery 4 between " b ".
Low-voltage testing circuit 7 monitors the output voltage of rechargeable battery 4 always, when the output voltage of rechargeable battery 4 is lower than a fixed voltage Vt, low-voltage testing circuit 7 detects this situation (step S3), and stops the interruption of sending to controller 2 from operation part 6.(step S4).Usually Vmin is 2.0 volts, makes Vt＞Vmin, and for example Vt is made as 2.2 volts.For example shown in Fig. 9 (3), operate this radio selective-calling receiver point " b " user, controller 2 consumed current sharply increase as a result, the output voltage of rechargeable battery 4 descends rapidly, become at point " c " and to be lower than described magnitude of voltage Vt, low-voltage testing circuit 7 stops the interruption of sending to controller 2 from operation part 6.Utilize this operation, limited the electric current of the rapid increase of controller 2, shown between the point " c " among Fig. 9 (3) and " d ", the output voltage of rechargeable battery 4 descends gradually.As a result, the output voltage of the rechargeable battery 4 minimum operation voltage Vmin that can not become and be lower than controller 2.
At the point " d " of Fig. 9, radio part 1 becomes " shutoff ", and DC/DC converter 3 becomes " conducting " (step S5), and to rechargeable battery 4 chargings, output voltage is elevated to supply voltage V
DDWhen DC/DC converter 3 became " conducting ", cancellation stopped to interrupt (step S5) from operation part 6 to what controller 2 sent.After this, the operation of repeating step S1 to S5.
As mentioned above, in the present embodiment, be in radio part 1 under the situation of " connection " state, 3 shut-down operations of DC/DC converter, provide power supply from rechargeable battery 4 to controller 2, therefore, the switching noise of DC/DC converter 3 can not influence radio part 1, can avoid the influence of the switching noise of DC/DC converter 3.And provide the low-voltage testing circuit 7 that monitors always and detect the output voltage of rechargeable battery 4, because user's operation, when controller 2 consumed current increase, when the output voltage of rechargeable battery 4 descends, stop the interruption of sending to controller 2 from operation part 6 by low-voltage testing circuit 7, therefore can avoid electric current to increase, this is the rapid reason that descends of output voltage that causes rechargeable battery 4, can not occur causing the phenomenon of controller 2 fluctuation of services, can make it keep stable operation owing to the voltage that provides descends.
The power save function timing control signal BS of radio part 1 is used jointly as the control signal of DC/DC converter 3, therefore only the required control signal SW of DC/DC converter 3 before, no longer need now, can make circuit structure not depend on POCSAG signal format.
The time sequential routine of DC/DC converter 3 is shown in Fig. 8 (c), utilize radio part 1 " shutoff " during, 3 operations of DC/DC converter, and to rechargeable battery 4 chargings, therefore, the charging interval is elongated, can keep almost being full of the state of electricity, provide enough electric energy to controller 2, even and under the situation that the output voltage of rechargeable battery 4 descends, also can be than in the past quickly to rechargeable battery 4 chargings.
In the above-described embodiment, described the radio selective-calling receiver that adopts POCSAG signal format as an example, the present invention also can adopt other signal format, as FLEX signal format except POCSAG signal format.In Figure 10 (a), FLEX signal format has been shown.FLEX is a registered trade mark.
As shown in figure 10, before realizing synchronization timing by built-in time r, radio part 1 becomes " connection ".Be described according to the state that becomes " connection " in every frame radio part 1.In block signal BI, be frame and format structure signal, the i.e. address information of address field AF and vector field VF etc.In address field AF, be ID address information etc., detecting under the situation of user ID, read next vector field VF, test example is as numeral and the type of message of English alphabet and the positional information of message, and reads message data among the message field MF.After this, radio part 1 becomes " shutoff ", and this is corresponding to frame 0 (zero) part.In address field AF, do not detecting under the situation of user ID, radio part 1 becomes " shutoff ", and this is corresponding to frame 1 part.
Shown in Figure 10 (c), the time sequential routine of DC/DC converter 3 is set to time sequential routine anti-phase of the radio part 1 shown in Figure 10 (b), even the signal format difference also can obtain the effect identical with the radio selective-calling receiver that adopts above-mentioned POCSAG signal format.
As mentioned above, according to the present invention, when radio part 1 not operation, DC/DC converter 3 becomes " conducting " by the time sequential routine control signal of coming self-controller 2, the power supply of main battery 5 becomes direct current from direct current, become the electric energy that direct current obtains from direct current and deliver to controller 2, rechargeable battery 4 is recharged.Therefore, during the not operation of radio part 1, rechargeable battery 4 is sufficiently charged, beguine is long according to the operating period of time sequential routine control signal during this period, always can be to rechargeable battery 4 full charges, and can promptly provide enough electric energy to rechargeable battery 4 chargings with to controller 2.
According to the present invention, the operation/not operation of DC/DC converter 3 is by the signal controlling according to the anti-phase control signal of the time sequential routine control signal of radio part 1.Therefore, the required control signal of operation/not operation that past is only controlled DC/DC converter 3 has not needed now, can be under the situation that does not depend on signal format, rechargeable battery 4 is charged fully, make rechargeable battery 4 always store enough electric energy, and can promptly provide enough electric energy to rechargeable battery 4 chargings with to controller 2.
According to the present invention, detect the output voltage of rechargeable battery 4, when this voltage is lower than a fixing magnitude of voltage, stop the interruption of sending to controller 2 from operation part 6.Therefore, even because user's operation, when controller 2 consumed current increase, when the output voltage of rechargeable battery 4 descends, stop the interruption of sending to controller 2 from operation part 6 by low-voltage testing circuit 7, also can avoid electric current to increase, can not occur causing the phenomenon of controller 2 fluctuation of services, can make it keep stable operation owing to the voltage that provides descends.
Though below described the present invention in conjunction with specific embodiments, the invention is not restricted to this.Concerning one of ordinary skill in the art, under situation about not departing from the scope of the present invention with spirit, can do change to the foregoing description.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98123812A CN1222044A (en) | 1997-10-29 | 1998-10-29 | Wireless Selective Call Receiver |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP314506/97 | 1997-10-29 | ||
| CN98123812A CN1222044A (en) | 1997-10-29 | 1998-10-29 | Wireless Selective Call Receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1222044A true CN1222044A (en) | 1999-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98123812A Pending CN1222044A (en) | 1997-10-29 | 1998-10-29 | Wireless Selective Call Receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1222044A (en) |
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1998
- 1998-10-29 CN CN98123812A patent/CN1222044A/en active Pending
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