CN1567104A - Circuit arrangement for radio receiving clock - Google Patents

Abstract

This invention relates to adding a multiple switching circuit between receiving antenna magnetic bar for wireless to receive clock and receiving circuit. It is to change capacity and inductance of resonance circuit and to get different frequency of the circuit and to generate different frequency. And the wireless receiving clock can select different frequency based on signal frequency of the microprocessor storage and selects different receiving frequency. It changes the situation that when current wireless wave clock is used in different frequency areas and the wave clock cannot receive the frequency in the area within certain the frequency area.

Description

The circuit arrangement of radio reception clock

Affiliated technical field

The present invention relates to a kind of circuit arrangement of radio reception clock, refer to a kind of circuit design that makes the radio reception clock increase receive frequency range especially.

Background technology

As everyone knows, the creation of clock and watch makes that how to grasp the precise time timing is human the pursuit always.For now, the technology of timing generally is divided into quartzy timing of mechanical type timing and radio reception clock timing, and far surpasses traditional mechanical type and quartzy timing with the latter's time service precision.The radio reception clock is a kind of timer with controlled in wireless timing technology, and the degree of accuracy of its timing is decided by that sensitivity, fiduciary level, noise that signal receives when decipher precision.The radio reception clock of commonly using is single-frequency and receives, when the radiowave clock of commonly using moves to the regional extent use of different frequency, then this radio wave clock just can't go to receive this regional frequency, so that radio wave clock can only be defined in a certain particular frequency range of reception.

Summary of the invention

The object of the invention provides a kind of circuit arrangement of radio reception clock, can receive the frequency of zones of different with the radio reception clock of this circuit arrangement formation.

The technical solution adopted for the present invention to solve the technical problems is: a kind of circuit arrangement of radio reception clock, comprise receiving circuit, microprocessor, driving circuit, motor, photoelectric sensor, the receiving antenna bar magnet, time display unit, it is characterized in that it also comprises a multifrequency commutation circuit, this multifrequency commutation circuit by resonant circuit and at least one group of parallel connection (or series connection) more than the resonant circuit frequently selected cell form, by the conducting of on-off element whether the multifrequency selected cell includes a passive device and an on-off element,, change the electric capacity of resonant circuit/or inductance value, and then the variation receive frequency, this multifrequency commutation circuit is connected between receiving antenna bar magnet and the receiving circuit.

Multifrequency commutation circuit system is according to formula in the technical scheme $f=\frac{1}{2\mathrm{\π}\sqrt{\mathrm{LC}}}$ Designed, C table capacitance in this formula, L shows inductance value, can obtain a different frequency values if change the big young pathbreaker of electric capacity or inductance value.

Passive device is to be capacitor or inductor in the technical scheme.

On-off element can be hand switch, semiconductor switch or by the microprocessor automatic control switch of radio reception clock inside in the technical scheme.

The present invention is by setting up a multifrequency commutation circuit between receiving antenna bar magnet and receiving circuit, the electric capacity of change resonant circuit/or the inductance value size, make circuit can obtain different frequency values, produce different receive frequencies, thereby make the radio reception clock select different receive frequencies according to the signal frequency of microprocessor stores.When having changed regional extent that the radiowave clock of commonly using moves to different frequency and using, then this radio wave clock just can't go to receive this regional frequency, so that radio wave clock can only be defined in a certain particular frequency range of reception.

Description of drawings

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is a radio reception clock circuit block scheme of the present invention;

Fig. 2 is a kind of embodiment figure of commutation circuit frequently more than Fig. 1;

Fig. 3 be more than Fig. 1 frequently another of commutation circuit implement illustration.

Among the figure: 10. radio reception clock, 11. antenna bar magnets, 12. multifrequency commutation circuits, 121. resonant circuits, 122. the multifrequency selected cell, 13. receiving circuits, 14. microprocessors, 15. time display units, 16. pointer display unit 17. driving circuits, 18. motors, 19. photoelectric sensors

Embodiment

Fig. 1 is the circuit block diagram of radio reception clock of the present invention, from figure, can know and find out, this radio reception clock circuit device 10 comprises receiving circuit 13, microprocessor 14, driving circuit 17, motor 18, photoelectric sensor 19, the receiving antenna bar magnet, time display unit 15, multifrequency commutation circuit 12 constitutes.After circuit inserts power supply, microprocessor 14 makes all time showing interfaces demonstrate a reference time through self-verifying, and pointer display unit 16 promptly drives photoelectric sensor 19 by microprocessor 14 control Driver Circuit 17 and motor 18 makes pointer arrive the assigned address of reference time.After determining reference time, microprocessor 14 control receiving circuits 13 and 12 work of multifrequency commutation circuit, radio signal is delivered to multifrequency commutation circuit 12 and is switched selection after antenna bar magnet 11 induction, delivering to receiving circuit 13 amplification demodulators is again read by microprocessor 14, microprocessor 14 will be decodable time signal to multifrequency commutation circuit 12 switching frequencies up to the signal that reads one by one this moment, this frequency will be by the memory locking, behind the microprocessor 14 decoding time signals, directly drive display unit 15 and demonstrate the time, and calculating is sent the pulse of some after driving circuit 17 amplifies, drive motor 18, make pointer display unit 16 arrive the fixed time position.

Fig. 2 is a kind of embodiment of multifrequency commutation circuit, and as can be seen from the figure, this multifrequency commutation circuit 12 is made up of in resonant circuit 121 more than frequency selected cells 122 resonant circuit 121 and at least one group of parallel connection (or series connection).This multifrequency selected cell 122 is made up of a passive component and a switch module, resonant circuit 121 is to be formed in parallel by an inductor L and a capacitor C, this passive component is capacitor C1～Cn, by the conducting of switch module SW1～SWn whether, whether the decision passive component is connected to capacitor C, and the capacitance of change resonant circuit 121, go out another frequency values with resonance, this multifrequency selected cell 12 visual demands and determine to be one group or many groups, this switch module can be hand switch, semiconductor switch or IC etc., and can manually or by the microprocessor 14 of radio reception clock 10 inside control switching automatically.

The embodiment of another multifrequency commutation circuit shown in Figure 3, as can be seen from the figure, this resonant circuit 121 is to be in series by a capacitor C and an inductor L, this passive component is inductor L1～Ln, by the conducting of switch module SW1～SWn whether, whether the decision passive component is serially connected with inductor L, and the inductance value of change resonant circuit 121, go out another frequency values with resonance, this multifrequency selected cell 12 visual demands and determine to be one group or many groups, this switch module can manually or by the microprocessor of radio reception clock inside be controlled switching automatically.

In sum, the radio reception clock circuit device by technical solution of the present invention is formed not only has outside the practical effect, and be new design not seen before, enhancement with effect and progressive, thus met the important document of Patent Law creation, the whence in accordance with the law the mere formality application it.For this reason, careful your juror is detailed to give examination, and prays and grant quasi patent early, to feeling moral just.

Below the present invention has been done a detailed description, only the above person only is the present invention's preferred embodiment, when the scope that can not limit the invention process.Be that all equalizations of doing according to the present patent application scope change and modify etc., all should still belong in the present invention's the patent covering scope.

Claims (4)

1, a kind of circuit arrangement of radio reception clock, comprise receiving circuit, microprocessor, driving circuit, motor, photoelectric sensor, the receiving antenna bar magnet, time display unit is characterized in that it also comprises a multifrequency commutation circuit, this multifrequency commutation circuit by resonant circuit and at least one group of parallel connection (or series connection) more than the resonant circuit frequently selected cell form, by the conducting of on-off element whether the multifrequency selected cell includes a passive device and an on-off element,, change the electric capacity of resonant circuit/or inductance value, can change receive frequency, this multifrequency commutation circuit is connected between receiving antenna bar magnet and the receiving circuit.

2, circuit arrangement according to claim 1 is characterized in that multifrequency commutation circuit system is according to formula $f=\frac{1}{2\mathrm{\π}\sqrt{\mathrm{LC}}}$ Designed, C table capacitance in this formula, L shows inductance value, can obtain a different frequency values if change the big young pathbreaker of electric capacity or inductance value.

3, circuit arrangement according to claim 1 is characterized in that passive device is to be capacitor or inductor.

4, circuit arrangement according to claim 1 is characterized in that on-off element can be hand switch, semiconductor switch or by the microprocessor automatic control switch of radio reception clock inside.

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