CN203193609U

CN203193609U - Clock source

Info

Publication number: CN203193609U
Application number: CN 201320149991
Authority: CN
Inventors: 郑奶平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-03-28
Filing date: 2013-03-28
Publication date: 2013-09-11
Anticipated expiration: 2023-03-28

Abstract

The utility model discloses a clock source. The clock source comprises the following parts: a circuit board provided with an opening; a rubidium bell module group fixedly arranged on a first surface of the circuit board; a thermal conductor arranged in the opening; and a semiconductor refrigeration sheet in heat conduction connection with the rubidium bell module group through the thermal conductor. Through the above disclosed content, the technical scheme disclosed by the utility model can maintain the temperature of the rubidium bell module group the same as that of the semiconductor refrigeration sheet, thereby avoiding influence of environment temperature change on clock output of the rubidium bell module group.

Description

A kind of clock source

Technical field

The utility model relates to electronic information technical field, particularly relates to a kind of clock source.

Background technology

Third generation mobile need a large amount of split-second precision equipment, its required precision reach tens nanosecond rank, the equipment that produces this split-second precision needs stable reference clock.

Be the time device of benchmark with the rubidium clock, be subjected to physical environment factors such as earth magnetism, temperature obvious.Do not having under the constant temperature protection situation, when portable time device moved on to indoor maintenance from outdoor tracking, very big drift can appear in time output.Fixed time device owing to air-conditioning start-stop, rotation speed of the fan change, when day and night reason such as difference variation causes environmental temperature fluctuation, reference clock degradation, time precision also can be influenced.

Provide the high-precision rubidium clock of equipment choosing of time maintenance function as reference clock, to obtain the accurate real-time clock time from the high accuracy rubidium clock.But when variation of ambient temperature, even use high accuracy rubidium clock module, performance index are obvious deterioration also, and its time precision to vary with temperature decline very fast.

The utility model content

The technical problem that the utility model mainly solves provides a kind of clock source, can make the temperature of rubidium clock module and semiconductor chilling plate be consistent, and can avoid variation of ambient temperature that the clock output of rubidium clock module is impacted.

First aspect provides a kind of clock source, comprising: circuit board, and circuit board is provided with opening; The rubidium clock module is fixedly set in the first surface of circuit board; Heat carrier is arranged in the opening; Semiconductor chilling plate keeps heat conduction to be connected by heat carrier and rubidium clock module.

In first kind of first aspect possible implementation, the rubidium clock module comprises: rubidium clock, be fixedly set in the first surface of circuit board, and semiconductor chilling plate keeps heat conduction to be connected by heat carrier and rubidium clock; Lid is fixedly set in the first surface of circuit board, and rubidium clock places in the formed cavity of the first surface of lid and circuit board.

In second kind of first aspect possible implementation, the clock source also comprises the magnetic screen outer cover, and circuit board, rubidium clock, semiconductor chilling plate, heat carrier and lid place in the magnetic screen outer cover.

In conjunction with second kind of first aspect possible implementation, in the third possible implementation, the clock source also comprises fan and blower tray, and fan is fixed in blower tray, the magnetic screen outer cover is provided with ventilating opening, and it is outer near the ventilation oral-lateral that blower tray is fixedly set in the magnetic screen outer cover.

In the 4th kind of possible implementation of first aspect, the clock source also comprises radiator, and radiator is fixedly set on the semiconductor chilling plate.

In the 5th kind of possible implementation of first aspect, heat carrier is the heat conduction cotton.

In the 6th kind of possible implementation of first aspect, circuit board is provided with control circuit, and control circuit is electrically connected with semiconductor chilling plate.

Therefore, the utility model embodiment provides a kind of clock source, influenced by environmental temperature fluctuation at the rubidium clock module, semiconductor chilling plate and rubidium clock module are arranged at first surface and the second surface of circuit board respectively, and at circuit board opening is set, make semiconductor chilling plate to keep heat conduction to be connected with the rubidium clock module by the heat carrier that is arranged in the opening, thereby make the temperature of rubidium clock module and semiconductor chilling plate be consistent, can avoid variation of ambient temperature that the clock output of rubidium clock module is impacted.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below 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 schematic perspective view of clock of the present utility model source first embodiment;

Fig. 2 is the generalized section of clock of the present utility model source first embodiment;

Fig. 3 is the vertical view of circuit board among first embodiment of clock of the present utility model source;

Fig. 4 is the schematic appearance of clock of the present utility model source second embodiment;

Fig. 5 is the generalized section of clock of the present utility model source second embodiment;

Fig. 6 is the three-dimensional exploded view of clock of the present utility model source second embodiment under first visual angle;

Fig. 7 is the three-dimensional exploded view of clock of the present utility model source second embodiment under second visual angle;

Fig. 8 is that the equipment that clock source that the utility model embodiment discloses is applied under the concrete scene connects block diagram.

Embodiment

For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment 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 obtains under the creative work prerequisite, all belong to the scope of the utility model protection.

At first see also Fig. 1 to Fig. 3 clock of the present utility model source first embodiment is made detailed introduction.Wherein Fig. 1 is the schematic perspective view of clock of the present utility model source first embodiment, and Fig. 2 is the generalized section of clock of the present utility model source first embodiment, and Fig. 3 is the vertical view of circuit board among first embodiment of clock of the present utility model source.

As depicted in figs. 1 and 2, the utility model embodiment clock source of disclosing comprises circuit board 101, rubidium clock module 102, semiconductor chilling plate 103 and heat carrier 104.

Wherein, circuit board 101 is provided with opening, rubidium clock module 102, be fixedly set in the first surface of circuit board 101, wherein this first surface particularly can be the lower surface shown in Fig. 2, heat carrier 104 runs through and is arranged in the opening, and semiconductor chilling plate 103 is connected with the 102 maintenance heat conduction of rubidium clock module by heat carrier 104.

In the present embodiment, owing to rubidium clock module 102 is arranged at the first surface of circuit board 101, and at circuit board 101 opening is set, make semiconductor chilling plate 103 to keep heat conduction to be connected with rubidium clock module 102 by the heat carrier 104 that is arranged in the opening, thereby make the temperature of rubidium clock module 102 and semiconductor chilling plate 103 be consistent, can avoid variation of ambient temperature that the clock output of rubidium clock module 102 is impacted.

Please further referring to Fig. 1 and Fig. 2, alternatively, the clock source also comprises radiator 106, and radiator 106 is fixedly set on the semiconductor chilling plate 103, is used for semiconductor chilling plate 103 is dispelled the heat, to assist to carry out thermostatic control.

Particularly, rubidium clock module 102 comprises rubidium clock 1021 and lid 1022, rubidium clock 1021 is fixedly set in the first surface of circuit board 101, semiconductor chilling plate 103 keeps heat conduction to be connected by heat carrier 104 with rubidium clock 1021, lid 1022 is fixedly set in the first surface of circuit board 101, and rubidium clock 1021 places in the formed cavity of first surface of lid 1022 and circuit board 101.

Certainly, the internal structure of the above rubidium clock module 102 that discloses only is a kind of optional implementation of the present utility model, in other implementations of the present utility model, can adopt existing various rubidium clock module, wherein be connected with rubidium clock maintenance heat conduction in the rubidium clock module by heat carrier 104 as long as guarantee semiconductor chilling plate 103.

Wherein, heat carrier 104 can realize that for example, its available heat conduction cotton is realized, specifically the heat conduction cotton can be pasted between semiconductor chilling plate 103 and the rubidium clock 1021 by various Heat Conduction Materials.

Below see also Fig. 3, as shown in Figure 3, circuit board 101 is provided with rectangular opening, it should be noted that the shape of this opening is not defined as rectangle, and its shape and area can arrange according to actual needs.

In addition, the fixed form between the first surface of rubidium clock module 102 and circuit board 101 can be by various existing techniques in realizing such as screw, rivet or welding, and the present invention does not limit this.

Below referring to Fig. 4 to Fig. 7 clock of the present utility model source second embodiment is made detailed introduction.Wherein Fig. 4 is the schematic appearance of clock of the present utility model source second embodiment, Fig. 5 is the generalized section of clock of the present utility model source second embodiment, Fig. 6 is the three-dimensional exploded view of clock of the present utility model source second embodiment under first visual angle, and Fig. 7 is the three-dimensional exploded view of clock of the present utility model source second embodiment under second visual angle.

Extremely shown in Figure 7 as Fig. 4, in second embodiment of the present utility model, the clock source outer setting magnetic screen outer cover 107 that further discloses in first embodiment, circuit board 101, rubidium clock 1021, semiconductor chilling plate 103, heat carrier 104 and lid 1022 place in the magnetic screen outer cover 107.Because 107 pairs of whole rubidium clock modules 102 of magnetic screen outer cover wrap up, can prevent more that therefore various magnetic fields from causing interference to rubidium clock module 102.

Alternatively, magnetic screen outer cover 107 specifically can comprise magnetic screen outer cover 1071 and following magnetic screen outer cover 1072.

And, in second embodiment of the present utility model, the clock source also comprises fan 301 and blower tray 302, fan 301 is fixed in blower tray 302, magnetic screen outer cover 107 is provided with ventilating opening 203,204, and it is outer near ventilating opening 203,204 sides that blower tray 302 is fixedly set in magnetic screen outer cover 107.Fan 301 can carry out wind-cooling heat dissipating to rubidium clock module 102, circuit board 101, semiconductor chilling plate 103 and radiator 106.

It should be noted that in of the present utility model first and second embodiment more can control circuit be set at circuit board 101, control circuit is electrically connected with semiconductor chilling plate 103, realize temperature control.Particularly, control circuit is electrically connected with semiconductor chilling plate 103 by lead, when control circuit is given semiconductor chilling plate 103 power supplies, under refrigeration mode, the cold junction of conductor refrigeration sheet 103 gives the rubidium clock module 102 refrigeration, the hot junction is arrived surrounding environment to heat diffusion by radiator 106, makes temperature keep constant; Opposite, control circuit also can be controlled semiconductor chilling plate 103 and work in heating mode, makes temperature be raised to predetermined value.

Alternatively, control circuit can be electrically connected with fan, to regulate rotation speed of the fan.

Below see also Fig. 8, Fig. 8 is that the equipment that clock source that the utility model embodiment discloses is applied under the concrete scene connects block diagram, as shown in Figure 8, the Management Controller 70 main man-machine interfaces that realize are operated, internal module communication and control and management, clock source 802 is the clock source that the utility model first or second embodiment disclose, it comprises rubidium clock, rubidium clock is used for providing the self-vibration reference clock, the time reference source is GPS(Global Positioning System, global positioning system) or outside PPS+TOD(pulse per second+time of day, pulse per second (PPS)+Time of Day) signal, be used for providing the system reference time, time output module 805 can be external equipment is provided fiducial time, and test and monitoring that time input module 803 can be external timing signal provide input interface.

Along with wireless network to high speed, broadband, high spectrum utilization evolution, requirement to time precision reaches in the 1us, the reliability requirement of transmission is also more and more higher to the time, need possess certain hold facility, so the clock source that the utility model discloses not only is fit to be used in high accuracy portable instrument field, be fit to also be applicable to that other needs use the equipment of high accuracy high reliability time source, as BITS(building integrated timing supply, Building Integrated Timing Supply) server etc.

Therefore, the utility model embodiment is owing to be arranged at the rubidium clock module first surface of circuit board, and at circuit board opening is set, make semiconductor chilling plate to keep heat conduction to be connected with the rubidium clock module by the heat carrier that is arranged in the opening, thereby make the temperature of rubidium clock module and semiconductor chilling plate be consistent, can avoid variation of ambient temperature that the clock output of rubidium clock module is impacted.

The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims

1. a clock source is characterized in that, comprising:

Circuit board, described circuit board is provided with opening;

The rubidium clock module is fixedly set in the first surface of described circuit board;

Heat carrier is arranged in the described opening;

Semiconductor chilling plate keeps heat conduction to be connected by described heat carrier and described rubidium clock module.

2. clock according to claim 1 source is characterized in that described rubidium clock module comprises:

Rubidium clock is fixedly set in the first surface of described circuit board, and described semiconductor chilling plate keeps heat conduction to be connected by described heat carrier and described rubidium clock;

Lid is fixedly set in the first surface of described circuit board, and described rubidium clock places in the formed cavity of the first surface of described lid and described circuit board.

3. clock according to claim 1 source is characterized in that described clock source also comprises the magnetic screen outer cover, and described circuit board, rubidium clock, semiconductor chilling plate, heat carrier and lid place in the described magnetic screen outer cover.

4. clock according to claim 3 source, it is characterized in that, described clock source also comprises fan and blower tray, described fan is fixed in described blower tray, described magnetic screen outer cover is provided with ventilating opening, and it is outer near described ventilation oral-lateral that described blower tray is fixedly set in described magnetic screen outer cover.

5. clock according to claim 1 source is characterized in that described clock source also comprises radiator, and described radiator is fixedly set on the described semiconductor chilling plate.

6. clock according to claim 1 source is characterized in that described heat carrier is the heat conduction cotton.

7. clock according to claim 1 source is characterized in that described circuit board is provided with control circuit, and described control circuit is electrically connected with described semiconductor chilling plate.