CN1234701A - Wireless-paging receiver and method for saving electricity, of cell of wireless paging receiver - Google Patents

Wireless-paging receiver and method for saving electricity, of cell of wireless paging receiver Download PDF

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Publication number
CN1234701A
CN1234701A CN99103036A CN99103036A CN1234701A CN 1234701 A CN1234701 A CN 1234701A CN 99103036 A CN99103036 A CN 99103036A CN 99103036 A CN99103036 A CN 99103036A CN 1234701 A CN1234701 A CN 1234701A
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China
Prior art keywords
voltage
battery
counting
paging receiver
signal
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CN99103036A
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木户彻
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NEC Corp
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NEC Corp
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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

The power saving method of wireless pager uses the switch control supplied by a battery power source to restrain the power consumption of the battery. The method includes a step to recover the battery voltage by extending the power-off state of battery's power supply when the battery voltage is dropped to a pre-determined voltage. A wireless paging receiver, which comprises a receiving loop and a controlling loop, uses the pre-determined cycle in implementing the switch controller of the receiving loop battery's power supply to control the power consumption of the battery's power voltage. The controlling loop is equipped with a level detection loop that compares the voltage of the battery's power voltage with a pre-determined reference voltage, and a counter, which is controlled by the output of the reference detection loop. When the battery voltage is higher than the pre-determined reference voltage, it will calculate a normal switch-off state period to restrict the power assumption. When the battery voltage is lower than the pre-determined reference voltage, it will calculate an extending switch-off state period.

Description

The method for saving electricity, of cell of radio paging receiver and radio paging receiver
The present invention relates to battery power conservation, particularly relate to a kind of method for saving electricity, of cell that the radio paging receiver of high-precision cell voltage demonstration and scan operation can be provided.
In the last few years, the demand of radio paging receiver (beep-pager) is increased sharply, following various services also grow up." multizone service " also be these the service in a kind of.In this service,, even allow a beep-pager to receive in many coverages although the receiver frequency is different usually in the coverage.
Just support the receiver of this service, each regional information is called ' scanning directory ', and for example the receiver frequency is registered in advance.When energized or when carrying out range searching, receiver carries out single pass, receiving current receivable zone continuously based on this scanning directory, thereby determines the receiver frequency on the current location.In this service, the number of frequencies that will register in the scanning directory can be more than 20 or 20.
In addition, in the nearest receiver of supporting the multizone service, the scanning beep-pager has become main flow, and this scanning beep-pager uses scanning system to determine that the existence of given field intensity is so that scan many frequencies apace.In this system, to compare with signal search in the traditional pattern matching system, field strength measurement itself can be carried out fast.For example, with regard to domestic FLEX_TD system, can be reduced to about 300ms the sweep time that last system carries out each frequency, and then a system is about sweep time of carrying out each frequency 2sec.
On the other hand, the miniaturization and the lightness of beep-pager constantly make progress recently, and be following, uses the beep-pager of the little lightweight air cell of volume (air battery) to increase.
Yet air cell has following characteristic: when battery was applied in the load of electrical source consumption type continuously and makes cell voltage get back to normal value once more when removing load, voltage reduced gradually, but it does not reach the terminal point in useful life but be temporary.Therefore, under the situation of the tradition scanning beep-pager that uses air cell, when sector scanning begins, cell voltage reduces behind circuit operation, and for example alarm and vibration function need consume the very large energy of beep-pager, because receiving unit continuous operation under the bigger situation of electrical source consumption, there is a problem, reception can not normally be carried out, and perhaps the display operation of pilot cell replacing takes place mistakenly, and does not consider the just temporary transient reduction of cell voltage.In addition, in field intensity detection type scanning beep-pager, exist the problem of the error result that may export the field intensity detection especially.
Therefore, the purpose of this invention is to provide a kind of method for saving electricity, of cell of radio pager, this method can suppress the electrical source consumption of battery supply and prevent to receive in faulty operation.
Another object of the present invention provides a kind of method for saving electricity, of cell of radio paging receiver, and this method can prevent that display from showing battery altering mistakenly.
A further object of the present invention provides a kind of radio paging receiver of the faulty operation that can suppress the electrical source consumption of battery supply and can prevent to receive.
Another purpose of the present invention provides a kind of display that can prevent and shows the radio paging receiver of battery altering mistakenly.
According to the present invention, the electrical source consumption that makes battery supply is controlled the method for saving electricity, of cell of the radio paging receiver that suppresses through the on/off of battery supply, may further comprise the steps:
When battery supply is reduced to predetermined voltage when following,, the blocking interval of battery supply recovers cell voltage during certain by being prolonged.
According to a further aspect in the invention, radio paging receiver comprises:
A receiving circuit; With
Control device is used for by the on/off of receiving circuit implementation battery supply being controlled the electrical source consumption of battery supply with predetermined period;
Wherein, control device comprises: the level detection device that the voltage of battery supply and predetermined voltage level are compared; With the counting device of controlling by the output of level detection device, when cell voltage is higher than predetermined voltage level, to counting during the normal turn-off that suppresses electrical source consumption; When cell voltage was lower than predetermined voltage level, prolongation blocking interval long during the contrast normal turn-off was counted.
Describe the present invention in detail below in conjunction with accompanying drawing.
Fig. 1 is the block diagram that shows the preferred embodiment of the present invention;
Fig. 2 shows the block diagram of an example of the structure be counting device embodiment illustrated in fig. 1;
Fig. 3 is the sequential chart that shows operation embodiment illustrated in fig. 1;
Fig. 4 is the sequential chart of the operation of conventional art;
Fig. 5 is the block diagram that shows another preferred embodiment of the present invention;
Fig. 6 is the sequential chart that shows CPU operation among the present invention.
Fig. 1 is the block diagram that shows the method for saving electricity, of cell of radio paging receiver in the preferred embodiment of the present invention.
The receiving circuit of this embodiment comprises: the wireless signal that antenna 101 and receiving unit 102, receiving unit 102 amplify, decoding is received by antenna 101 is output decoder signal b then.Receiving unit 102 has the built-in combiner circuit that can receive the decode a plurality of different frequencies.In addition, in the regeneration time clock that generates the data of from the reference clock of oscillating circuit (not shown) and decoded signal b, sampling, 103 pairs of decoded signal b decodings of decoder.In addition, decoder 103 is carried out the sign indicating number type detecting operation of the synchronizing signal that transmits, its detecting operation of address and the storage of decoding reception data, then the reception data is sent to CPU 104 as signal c.
EEPROM 107 is the receiver address information of storage receiver or the memory of scanning directory.
CPU 104 is according to the combiner circuit of scanning directory control setting in receiving unit 102 of EEPROM 107 storages, and the battery power conservation of scan operation and receiving unit 102 is operated.For battery power conservation control, CPU104 is by the power supply on/off of output power saving signal i control receiving unit 102 grades; When the reception of finishing the data-signal c of decoder 103, be adjusted at simultaneously the power remove of this receiving unit of regularly carrying out 102.In addition, CPU104 analyzes and handles the message of issuing this beep-pager to the reception data that decoder 103 receives, and is notified the message of this reception then by driver 105 by notifying device 106.Notifying device 106 is made up of LCD, loud speaker, LED etc.
Battery supply 108 is the power supplys that are used for the beep-pager unit.Level detection device 109 detects the voltage level of battery supply 108, the voltage level of determining battery supply 108 whether drop to provide the predetermined level (hereinafter referred to as ' low-voltage alarm detection level ' or ' LVA level ') of changing battery or below, still do not drop to predetermined level (non-LVA level), then its result is determined latch means 110 outputs as a result as signal p to level.
Level determine latch means 110 as a result convert in on-state (RXON) from receiving unit 102 receiving unit 102 off state (RXOFF) during, determine the output signal p of device 109 by the battery power conservation signal i latch level of CPU104 output.
First counting device 111 is counting devices of determining (blocking interval of battery power conservation signal i) during the off state of receiving unit 102.On the other hand, second counting device 112 is counting devices, when the voltage of the battery supply that is used for receiving unit 102 grades is reduced to predetermined low-voltage it determine to supspend the frequency scanning operation during.First and second counting devices 111,112 are in the blocking interval operation of the battery power conservation signal i of CPU104 output; Reset to the count value of " 0 " and the operation that is under an embargo in (during the connection of battery power conservation signal i) during the on-state of receiving unit 102 by signal i.
In addition, determine the output signal k of latch means 110 as a result according to level, first and second counting devices 111,112 are allowed to operation/quiescing.When signal k was low level, first counting device 111 was allowed to operation, the operation that is under an embargo of second counting device 112.In contrast, when signal k is high level, the operation that is under an embargo of first counting device 111, second counting device 112 is allowed to operation.Two counters are counted in the operation enable state, signal that increases progressively count signal 1 and signal m when the output conduct reaches predetermined count value respectively.
Signal selecting 113 is selected the signal 1 of input 1,2, any among the m according to the logic state of signal k, and exports as output signal o.Signal m when the signal 1 when first counting device 111 is allowed to operate or second counting device 112 are allowed to operate outputs to CPU104 as output signal o from signal selecting 113.
CPU104 determines off state time (time is up) of receiving unit 102 according to the rear end of the output pulse of signal selecting 113, operation is converted to the on-state (on-state of signal i) of receiving unit 102 from the off state of receiving unit 102.In addition, CPU104 determines during the on-state of receiving unit 102, and after certain hour, for example after the 2sec, generates the cut-off signals of battery power conservation signal i for the off state of receiving unit 102.
LVA the level of each off state of definite device 114 detection receiving units 102 occurs and determines that k is a LVA level or lower as a result, perhaps be not the LVA level, and the detection of definite LVA level continues to carry out by pre-determined number.For example, when three LVA of continuous detecting, LVA occurs determining that device 114 sends to CPU104 to the LAV notice request by signal n, and CPU104 the user of LVA notice beep-pager, provides the replacing of battery by notifying device 106 then, stops to receive operation.
Fig. 2 is the block diagram of an example of structure that shows first and second counting devices 111,112 of present embodiment.Because except that the count value of each device set, first and second counting devices 111,112 are identical, therefore with instance interpretation first counting device 111.
First counting device 111 is formed by a comparator 21, counter 22, comparative result latch cicuit 23 with to the NOR gate 24 of counter 22 output reset signals.
For signal K, output " 0 " when detecting the non-LVA level that is higher than low-voltage alarm level, output " 1 " when detecting LVA.In addition, enter the signal i of on/off state for the power supply of control receiving unit 102, when control receiving unit 102 enters on-state, output " 1 ", when control receiving unit 102 enters off state, output " 0 ".
Counter 22 is allowed/quiescing or ' zero clearing ' by the logic output control of the NOR gate 24 between the inversion signal of signal k and signal i.In the state that the detected and receiving unit of non-LVA 102 turn-offs, counter 22 begins the clock signal clk counting, and this clock signal is from the frequency-dividing clock of oscillator (not shown in figure 1) and has the time that is lower than battery power conservation signal i in fact.In the state outside above-mentioned state, counter 22 operation that is under an embargo, its count value is reset to " 0 ".Comparator 21 is compared the count value of counter 22 at each counting with preset value.When both are consistent, for example pass through 40ms after, to latch cicuit 23 output consistent signals " 1 ".Latch cicuit 23 latchs this unanimity signal, and as signal 1 output.
Second counting device 112 have with Fig. 2 in the identical structure of first counting device 111, according to the input of the inversion signal of signal k, only allow counting operation at the state that detects the LVA level and turn-off receiving unit 102.Second counting device 112 is carried out the counting from the sub-frequency clock signal CLK of oscillator (not shown); Count value is compared with preset value; With consistent, after for example passing through 10ms, export consistent signals " 1 " to latch cicuit 23 when both.
Use the sequential chart of Fig. 3 to explain the operational circumstances of embodiment shown in Figure 1 below, here, consistent among employed label and Fig. 1.
Be used for the time counter of the off state of receiving unit 102 during first counting device, 111 right and wrong LVA among Fig. 1, second counting device 112 is used for the time counter of the off state of receiving unit 102 when being LVA.Signal i is the signal of the power supply on/off of battery power conservation signal and control receiving unit 102.The on-state of the high level indication receiving unit 102 of signal i, and the off state of low level indication receiving unit 102.The time of the on-state of receiving unit 102 is set to 2sec, and its off state time is set to 40ms.The time of signal j pilot cell voltage shifts.The dotted line of being represented by th is the threshold level (LVA determines level) of cell voltage, and here th is set to 1.1V.Signal p is the output that level is determined device 109, and on behalf of cell voltage, low level be higher than LVA to determine level voltage, and on behalf of cell voltage, high level be lower than LVA to determine level voltage.Signal k is the output of latching at the decline edge of battery power conservation signal i signal p.
The counting of the off state time of receiving unit 102 finishes pulse during signal 1 right and wrong LVA, and the counting of the off state time of receiving unit 102 finished pulse when signal m was LVA.The off state time of receiving unit 102 is set to 40ms during non-LVA, and during LVA the off state time of receiving unit 102 be set to 10sec.Signal o is the output that the counting that is used for first and second counting devices 111,112 finishes the signal selecting 113 of pulse.
Fig. 3 shows a kind of like this situation: cell voltage reduces because of using vibration function before time t30; Scanning is from t30.Because scan operation begins cell voltage and further reduces, and is reduced to below the threshold level at time t33, thereby makes signal p be transformed into high level.Reach on the time t35 of off state at receiving unit 102 then, the high level of signal p is determined that by level latch means 110 latchs and make signal k to reach high level output as a result.
Because signal k is low level before time t35, therefore at time t31, the off state time counting of t32 and 111 pairs of receiving units 102 of t34 first counting device, i.e. 40ms, and make count end signal 1 become signal o, thus notice CPU counting is finished.When signal k became high level, be under an embargo operation and second counting device 112 of first counting device 111 was allowed to operate.Then, when battery power conservation signal i became low level, the off state time that counting operation begins to guarantee receiving unit 102 was 10 seconds.
When second counting device 112 generated counting end pulse m after time t34+10sec, signal selecting 113 was selected signal m according to signal k and is exported as signal o, thereby notice CPU104 counting is finished.After this, CPU104 begins to handle the on-state that gives receiving unit 102, and making signal i is high level.
At the off state time durations of the receiving unit 102 of (t35+10sec) from time t35 to the time, load is reduced, thereby has reduced electrical source consumption, therefore represents the signal j of the voltage level of power-supply battery to surpass threshold level.So, when after this continuing this processing, can carry out scan operation.In addition, LVA occurs determining device 114 discontinuous detection LVA level three times during this, and can avoid producing wrong alarm, and LVA takes place to determine that the result obtains the signal n of high level.
Fig. 4 is the sequential chart of conventional method.Also in conventional method, be provided with first counting device and CPU, CPU carries out the on/off control of the power supply of receiving unit by the output battery power conservation signal i identical with present embodiment.Yet,, therefore, generate the on-state of battery power conservation signal i continuously because the corresponding function of second counter etc. is not provided.So, occur determining the signal n of device output behind continuous detecting LVA level three times according to LAV, CPU provides the battery power conservation signal i of off state, stops to receive operation.
Thereby in conventional method, the situation shown in the image pattern 3 is such, and before time t40, cell voltage reduces because of using vibration function, and if scan since time t40, then cell voltage is lowered to below the threshold voltage at time t41.Yet because scanning is not stopped, the LVA level is transformed into position A, the B of off state and C by continuous detecting three times at receiving unit 102 from on-state successively.So, when supply voltage is unrecovered, by LVA device appears determining, stop to receive operation and generate the low-voltage alarm at time t43.
Fig. 5 is the block diagram that shows another preferred embodiment of the present invention.Compare with the embodiment among Fig. 1, this embodiment forms like this: be provided with a counting device, level determines that k is input to CPU as a result, and the selection of the off state time of the receiving unit when LVA and non-LVA is by software control.
The 511st, counting device, wherein with Fig. 2 in the comparator corresponding components be configured register, its comparison value can have CPU504 to be provided with.Thereby it can be counted variable value.
When the receiving unit on-state converts off state to, determine the output of latch means 510 as a result according to level, CPU504 sets the count value of the off state time of definite receiving unit into counting device 511.In the time that the CPU504 value of setting is increased progressively counting, counting device 511 is exported the count end signal 1 that is used for signal s to CPU504, the off state time of notice CPU receiving unit.That is, the count value of counting device, the 10sec when 40ms during for example non-LVA and LVA is provided with by CPU504.
Fig. 6 is the flow chart that shows the operation of CPU504 in the present embodiment.
The off state (RXOFF) that is transformed into low level receiving unit from high level at battery power conservation signal i is (step S1) afterwards, determine that as level the output signal k of the logic state of latch means 510 is read out (step S2) as a result, determine that cell voltage is also right and wrong LVA (step S3) of LVA level.
When signal k is low level, counting device 510 is provided with the off state time (step S4) of the count value of 40ms as receiving unit.When signal k is high level, the count value (step S5) of 10sec is set.Be provided with after the count value, counting operation is allowed to (step S6).Use finish (the step S7) that distinguishes counting from the signal 1 of counting device 511, then, the off state time of receiving unit finishes, and carries out the processing (step S8) of the on-state that enters receiving unit.
In the present embodiment, because CPU is provided with count value, two counting devices can be merged into a unit.In addition, counting device also is used to count during the on-state of receiving unit during not only being used to count the off state of receiving unit.Therefore, when CPU carries out battery power conservation control, can be used as universal counter, the present invention need not increase circuit scale and just can implement.
In addition, be configured when CPU is provided with from data that EEPROM reads and when receiver, make that the content of EEPROM can be fashionable from external write, count value can be from outer setting.
Advantage of the present invention:
In wireless receiving beep-pager of the present invention, when the voltage of battery supply dropped to low pressure warning detection level, the supply of power supply was supspended, and need also be ended than the frequency scanning operation of large power supply consumption.Thereby can suppress battery consumption, therefore temporarily-depressed battery voltage can be got back to normal level.
Thereby, in the present invention, when cell voltage reduces, the cell voltage that receiving circuit is supplied with is supspended, recover to wait for cell voltage.Therefore, can avoid the mistake that causes because of the temporary reduction of cell voltage to receive the fault alarm of operation and low-voltage.
In the radio paging receiver that particularly in multizone, uses, add that the scan operation of electrical source consumption type load can be supspended with receive frequency scanning search function.Therefore, the present invention can prevent that cell voltage from reducing state and being characterized as the situation generation that battery life finishes to notify mistakenly then the low-voltage alarm by mistake.
In addition, owing to promptly supspend scanning when the reduction of cell voltage is detected, the therefore unreliable scan operation under temporary low-voltage can be avoided carrying out as the faulty operation that field intensity detects.Thereby the reliability of scan operation can be guaranteed.
Although the present invention has carried out clear, complete explanation to specific embodiment, but claim is not limited, and claim can be interpreted as comprising contingent to one skilled in the art all distortion and the alternative structure that falls in the basic theory scope of the present invention.

Claims (7)

1. the on/off by battery supply is controlled the method for saving electricity, of cell of the radio paging receiver of the electrical source consumption that suppresses battery supply, may further comprise the steps:
When cell voltage reduces to predetermined voltage when following, the blocking interval by battery supply prolongs and recovers cell voltage during certain.
2. the method for saving electricity, of cell of radio paging receiver according to claim 1, wherein:
Described radio paging receiver has the scanning search function of the receive frequency that can use in multizone.
3. radio paging receiver comprises:
A receiving circuit; With
Control device is used for controlling by the on/off of described receiving circuit being carried out battery supply with predetermined period, controls the electrical source consumption of battery supply;
Wherein, described control device comprises: the level detection device that the voltage of described battery supply and predetermined voltage level are compared; With a counting device of controlling by the output of described level detection device, when being higher than described predetermined voltage level, cell voltage, when cell voltage is lower than described predetermined voltage level, contrasts the blocking interval counting of the prolongation of growing during the described normal turn-off to counting during the normal turn-off that suppresses electrical source consumption.
4. radio paging receiver according to claim 3, wherein:
Described receiving circuit has the scanning search function of the receive frequency that can use in multizone.
5. radio paging receiver according to claim 3, wherein:
Described counting device comprises second counting device to blocking interval counting long during first counting device of counting during the described normal turn-off and the described normal turn-off of contrast.
6. radio paging receiver according to claim 3, wherein:
Described counting device is provided with changeably set described normal and prolongs blocking interval, and according to the output of described level detection device select described normal and prolong any of blocking interval during.
7. radio paging receiver according to claim 3 further comprises:
Determine device, the predetermined times that is used for the reduction by detecting cell voltage is determined exhausting of battery; And display unit, show the low-voltage alarm according to the output of described definite device.
CN99103036A 1998-02-26 1999-02-25 Wireless-paging receiver and method for saving electricity, of cell of wireless paging receiver Pending CN1234701A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10060374A JPH11252607A (en) 1998-02-26 1998-02-26 Battery saving method for radio selective calling receiver and the radio selective calling receiver
JP60374/98 1998-02-26

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Publication Number Publication Date
CN1234701A true CN1234701A (en) 1999-11-10

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CN99103036A Pending CN1234701A (en) 1998-02-26 1999-02-25 Wireless-paging receiver and method for saving electricity, of cell of wireless paging receiver

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CN (1) CN1234701A (en)
TW (1) TW423234B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102140491A (en) * 2010-12-31 2011-08-03 聚光科技(杭州)股份有限公司 Bacterium detection method and device
CN102291482A (en) * 2010-06-16 2011-12-21 Lg电子株式会社 Method for power management of mobile communication terminal and mobile communication terminal using this method

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
JP4879858B2 (en) * 2007-09-29 2012-02-22 株式会社リコー Mobile receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102291482A (en) * 2010-06-16 2011-12-21 Lg电子株式会社 Method for power management of mobile communication terminal and mobile communication terminal using this method
CN102140491A (en) * 2010-12-31 2011-08-03 聚光科技(杭州)股份有限公司 Bacterium detection method and device

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TW423234B (en) 2001-02-21
JPH11252607A (en) 1999-09-17

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