CN217655437U - Miniaturized time service time keeping device - Google Patents

Abstract

The utility model discloses a miniaturized time service device in keeping time relates to timing technical field, adopts upper and lower layer structure, and the module integrated level is high, solves time service, the bulky problem of time service module. Has the advantages of small volume and high integration level.

Description

Miniaturized time service device of keeping watch

Technical Field

The utility model belongs to the technical field of the timing technique and specifically relates to a miniaturized time service device of keeping watch.

Background

The existing Beidou time service and time keeping module is mainly carried out by a separation scheme, namely the time service module and the time keeping module are respectively delivered and sold, and the main reason for the separation design of the time service and time keeping module is that the influence of a clock signal on a satellite signal of the time service module can be avoided. The device with the time service module and the time keeping module has the problems of large volume and unfavorable product integration.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a miniaturized time service device of keeping in time adopts superstructure, and the module integrated level is high, solves time service, the bulky problem of module of keeping in time. The device has the advantages of small volume and high integration level.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a miniaturized time service and keeping-time device comprises a satellite receiver, a crystal oscillator, a single chip microcomputer and a bottom plate. The miniature time service and keeping device further comprises an upper plate, the crystal oscillator and the single chip microcomputer are fixed on the bottom plate, the satellite receiver is fixed on the upper plate, the upper plate is located above the bottom plate, and the single chip microcomputer is connected with the satellite receiver and the crystal oscillator. The satellite receiver, the crystal oscillator and the single chip microcomputer adopt an upper-layer structure and a lower-layer structure, a butt plate connector design is adopted, the size of the device is reduced in design, and the single chip microcomputer with a smaller size is used, so that the size of the device is further reduced. The module integration level of the miniaturized time service and time keeping device is high, and the size is small.

Furthermore, the miniaturized time service and time keeping device further comprises a shielding case, the shielding case is connected with the bottom plate, and the satellite receiver, the crystal oscillator and the single chip microcomputer are all located in the shielding case. The shielding case is a tool for shielding electronic signals, and shields the influence of external electromagnetic waves on internal circuits and the outward radiation of electromagnetic waves generated inside. Meanwhile, the shielding cover can also be used for protecting the internal assembly, and the damage to the parts of the internal assembly caused by collision is avoided.

Furthermore, the miniaturized time service and time keeping device further comprises a shielding case framework, and the shielding case framework is connected to the bottom plate. The shielding cover framework is used for fixing the shielding cover, the shielding cover framework is connected to the bottom plate, and the bottom of the shielding cover is connected with the shielding cover framework.

Furthermore, the bottom of the shielding cover framework is provided with an insertion sheet, the bottom plate is provided with insertion holes, and the insertion sheet of the shielding cover framework is inserted into the insertion holes in the bottom plate and is connected to the bottom plate.

Furthermore, the side face of the framework of the shielding cover is provided with a groove, the inner side of the shielding cover is provided with a protrusion, and the protrusion is matched with the groove. The projection on the shielding cover is clamped in the groove on the framework of the shielding cover to fix the shielding cover.

Furthermore, the miniaturized time service and time keeping device comprises a first connector and a second connector, the first connector and the second connector are matched with each other, the first connector is fixed on the upper plate and connected with the satellite receiver, the second connector is fixed on the bottom plate, and the second connector is connected with the single chip microcomputer. The first connector is fixed on one side of the lower portion of the upper plate, the other side of the upper plate is placed on the crystal oscillator, the first connector is connected with the second connector, and the satellite receiver on the upper plate is connected with the single chip microcomputer on the bottom plate through the first connector and the second connector.

Further, the shielding case is in a rectangular parallelepiped shape. The cuboid shape has small appearance volume and is convenient to install and integrate.

Furthermore, a through hole is formed in the shielding cover. The through holes are formed in the shielding cover for heat dissipation, and meanwhile, the temperature difference between the inside and the outside of the shielding cover can be reduced. If the shielding case is not provided with the opening, the temperature may be too high during reflow soldering, so that the shielding case is cracked, and the internal devices are damaged.

Further, the crystal oscillator is an oven-controlled crystal oscillator. The oven controlled crystal oscillator has an altered accuracy and stability and is less noisy than temperature compensated crystal oscillators and voltage controlled oscillators.

Preferably, the crystal oscillator is a MEMS oscillator. The MEMS oscillator has stronger shockproof effect, and has the characteristics of no vibration influence and no breakage. The temperature stability of the MEMS oscillator is better than that of the traditional crystal oscillator, and the MEMS oscillator is not influenced by the change of the ambient temperature. Meanwhile, the MEMS oscillator can have a smaller size and is more convenient to integrate. The MEMS oscillator has higher precision, lower power consumption and faster start-up time.

The utility model provides a one or more technical scheme has following technological effect or advantage at least:

the utility model provides a miniaturized time service device of keeping in time. The time service module and the time keeping module of the miniaturized time service and time keeping device are highly integrated, and the miniaturized time service and time keeping device has the advantages of small size and high integration level.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;

FIG. 1 is a schematic view of a small and medium-sized time service device of the present invention;

fig. 2 is a schematic diagram of a satellite receiver according to the present invention;

FIG. 3 is a schematic view of the middle bottom plate of the present invention;

fig. 4 is a schematic view of an upper plate of the present invention;

fig. 5 is a schematic view of a first connector of the present invention;

fig. 6 is a cross-sectional view of the first connector taken along the line M-M of fig. 5 according to the present invention;

fig. 7 is a schematic view of a second connector according to the present invention;

fig. 8 is a cross-sectional view of the second connector taken along the line L-L of fig. 7;

fig. 9 is a schematic view of the shield according to the present invention;

fig. 10 is a schematic view of a shield framework according to the present invention;

FIG. 11 is a schematic view of a miniaturized time service and keeping watch device including a shielding cage frame according to the present invention;

FIG. 12 is a schematic view of a miniaturized time service and keeping watch device including a shielding case according to the present invention;

the system comprises a satellite receiver 1, an upper plate 2, a bottom plate 3, a crystal oscillator 4, a singlechip 5, a first connector 6, a second connector 7, a shielding cover 8, a shielding cover framework 9, a groove 10, a protrusion 11, a through hole 12 and an inserting sheet 13.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflicting with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the scope of the present invention is not limited by the specific embodiments disclosed below.

Example one

Referring to fig. 1, an embodiment of the present invention provides a miniaturized time service and keeping time device, which includes a satellite receiver 1, a crystal oscillator 4, a single chip microcomputer 5 and a bottom plate 3 shown in fig. 2. The miniaturized time service and keeping-watch device further comprises an upper plate 2, as shown in fig. 3, the crystal oscillator 4 and the single chip microcomputer 5 are fixed on the bottom plate 3, as shown in fig. 4, the satellite receiver 1 is fixed on the upper plate 2, the upper plate 2 is located above the bottom plate 3, and the single chip microcomputer 5 is connected with the satellite receiver 1 and the crystal oscillator 4. This device adopts the time service among the prior art to realize by way of keeping time, specifically is: when the system is powered on and starts to work, the satellite receiver 1 receives satellite signals, corresponding information such as position, height, speed, time and 1PPS (pulse per second) is calculated, the information is sent to the single chip microcomputer 5, the single chip microcomputer 5 receives the information and then acclimates and adjusts the input clock frequency of the crystal oscillator 4, the high-precision and high-stability 1PPS signals and the time frequency information are output after the information is processed through a system algorithm, and the time service function of the system is completed in the process. After time service is completed, if the satellite signal is disconnected, the singlechip 5 judges the time input by the satellite signal receiver and the validity of the 1PPS signal, and if the satellite signal is invalid, the power supply of the satellite signal receiver 1 is disconnected, so that the power consumption of the system is reduced. By taming and adjusting the frequency of the crystal oscillator 4, the effective time frequency and the 1PPS signal are continuously output, and the time keeping function is completed by continuing the process. And after the system detects the satellite signal, the singlechip 5 turns on the power supply of the satellite receiver 1 to ensure that the satellite receiver works normally. The process is repeatedly executed, and the time service and time keeping function of the system is completed. The crystal oscillator 4 can be an oven controlled crystal oscillator, a temperature compensation oscillator or a voltage controlled crystal oscillator, the model of the single chip microcomputer 5 is GD32F405VGH6, and the model of the satellite receiver 1 is T303-3.

Example two

Referring to fig. 9, on the basis of the first embodiment, the present invention provides a miniaturized time service and keeping watch device, which further includes a shielding cover 8. The shielding cover 8 can be made of stainless steel, white copper, tin bronze, brass, tinplate and the like.

EXAMPLE III

Referring to fig. 11, the present invention provides a miniaturized time service and keeping watch device based on the second embodiment, wherein the miniaturized time service and keeping watch device further includes a shielding case frame 9. The shield cover framework 9 is connected on the base, and the shield cover 8 is connected on the shield cover framework 9. The connection mode of the shielding case framework 9 and the base can be welding, joggling and integral connection.

Example four

On the basis of embodiment three the utility model provides a device when miniaturized time service, shield cover skeleton 9 side is equipped with recess 10, and 8 inboards of shield cover are equipped with protruding 11, and recess 10 and protruding 11 match each other, and the protruding 11 card of shield cover 8 is fixed on shield cover skeleton 9 in the recess 10 on shield cover skeleton 9. The number of the grooves 10 and the protrusions 11 may be one or more, and the protrusions 11 and the grooves 10 may or may not be uniformly distributed.

EXAMPLE five

On the basis of embodiment three the utility model provides a device when miniaturized time service, shield cover skeleton 9 side is equipped with protruding 11, and 8 inboards of shield cover are equipped with recess 10, and recess 10 and protruding 11 match each other, and the recess 10 of shield cover 8 blocks the arch 11 of shield cover skeleton 9, fixes shield cover 8 on shield cover skeleton 9.

EXAMPLE six

Please refer to fig. 10, based on the third embodiment, the utility model provides a miniaturized time service device, the shield cover frame is provided with the insertion sheet 13, the bottom plate 3 is provided with the insertion hole, the insertion sheet 13 is inserted into the insertion hole to fix the shield cover frame 9 on the bottom plate 3.

EXAMPLE seven

On the basis of embodiment one the utility model provides a device when miniaturized time service is kept watch, device when miniaturized time service is kept watch on includes first connector 6 and second connector 7, first connector 6 with second connector 7 matches each other, first connector 6 with satellite receiver 1 connects, second connector 7 with singlechip 5 connects. The number of the first connector 6 and the second connector 7 may be one or more, the first connector 6 is an MMCX-JD2 as shown in fig. 5 and 6, and the second connector 7 is an MMCX-KE connector as shown in fig. 7 and 8.

Example eight

On the basis of the second embodiment, the utility model provides a miniaturized time service device of keeping watch, shield cover 8 is the cuboid shape.

Example nine

On the basis of the second embodiment, the utility model provides a device is kept watch in time in miniaturized time service, be equipped with through-hole 12 on the shield cover 8. The number of the through holes 12 may be one or more, and the positions of the through holes 12 may be on the side or top surface of the shield case 8.

EXAMPLE ten

On the basis of the first embodiment, the utility model provides a miniaturized time service device of keeping watch, crystal oscillator 4 is the constant temperature crystal oscillator. The oven controlled crystal oscillator may be an oven controlled crystal oscillator using a quartz crystal or an oven controlled crystal oscillator using a silicon crystal.

EXAMPLE eleven

On the basis of the first embodiment, the utility model provides a miniaturized time service device of keeping watch, crystal oscillator 4 is the MEMS oscillator. The model of the MEMS oscillator is SIT5721AI-KW333-T-20.000000.

EXAMPLE twelve

Referring to fig. 12, the present invention provides a miniaturized time service device according to an eleventh embodiment, wherein the miniaturized time service device has an external dimension of 22.4mm 17mm 11.6mm, and the device can be seen to achieve a miniaturized design.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The miniature time service and keeping device is characterized by further comprising an upper plate, the crystal oscillator and the single chip microcomputer are fixed on the bottom plate, the satellite receiver is fixed on the upper plate, the upper plate is located above the bottom plate, and the single chip microcomputer is connected with the satellite receiver and the crystal oscillator.

2. The miniature time service and keeping-in-time device as claimed in claim 1, further comprising a shielding case, wherein the shielding case is connected with the bottom plate, and the satellite receiver, the crystal oscillator and the single chip microcomputer are all located in the shielding case.

3. The miniature time service and keeping device according to claim 2, further comprising a shielding case framework, wherein the bottom surface of the shielding case framework is connected with the bottom plate, the inner side of the shielding case is connected with the side surface of the shielding case framework, and the shielding case framework is positioned in the shielding case.

4. The miniature time service and keeping watch device as claimed in claim 3, wherein the bottom of the shielding case framework is provided with an insertion piece, the bottom plate is provided with an insertion hole, and the insertion piece of the shielding case framework is inserted into the insertion hole on the bottom plate and connected to the bottom plate.

5. The miniature time service and keeping watch device of claim 3, wherein a groove is formed on the side surface of the framework of the shield cover, a protrusion is formed on the inner side of the shield cover, and the protrusion and the groove are matched with each other.

6. The miniature time service and keeping-in-time device as claimed in claim 1, wherein the miniature time service and keeping-in-time device comprises a first connector and a second connector, the first connector and the second connector are matched with each other, the first connector is fixed on the upper plate, the first connector is connected with the satellite receiver, the second connector is fixed on the bottom plate, and the second connector is connected with the single chip microcomputer.

7. The miniature time service and keeping device of claim 2, wherein the shielding case is rectangular.

8. The miniature time service and keeping in time of claim 1, wherein the crystal oscillator is an oven controlled crystal oscillator.

9. The miniature time service and keeping watch device as claimed in claim 2, wherein the shielding case is provided with a through hole.

10. The miniaturized time service and time conservation device of claim 1, wherein the crystal oscillator is a MEMS oscillator.

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