CN209767495U - Double-groove constant temperature crystal oscillator based on Beidou navigation - Google Patents

Abstract

The utility model discloses a double-groove constant temperature crystal oscillator based on Beidou navigation, which comprises a constant temperature crystal oscillator body, wherein the constant temperature crystal oscillator body consists of a constant temperature groove, a phenolic resin insulation board and a quartz crystal oscillator, a circuit board is fixedly arranged inside the phenolic resin insulation board and is connected with the quartz crystal oscillator through pins, a graphene heat conduction plate is arranged in the middle of an inner cavity of the constant temperature groove and divides the constant temperature groove into a first constant temperature cavity and a second constant temperature cavity, and a pt100 temperature sensor is fixedly arranged inside the first constant temperature cavity and the second constant temperature cavity respectively, the utility model has the advantages that the placing groove and the MXT2708A Beidou positioning instrument are arranged, so that the constant temperature crystal oscillator body can conveniently improve an accurate signal source and accurately transmit positioning information, and the arranged first semiconductor refrigeration piece and the second semiconductor refrigeration piece can detect in real time according to the pt100 temperature sensor, the temperature control of the constant temperature bath is more accurate, and the precision of the constant temperature crystal oscillator body is improved.

Description

Double-groove constant temperature crystal oscillator based on Beidou navigation

Technical Field

The utility model relates to a crystal oscillator, in particular to based on big dipper navigation double flute constant temperature crystal oscillator.

Background

The crystal oscillator refers to a quartz crystal resonator, namely a quartz crystal or a crystal and a crystal oscillator [1], wherein a slice (simply called a wafer) is cut from a quartz crystal according to a certain azimuth angle; and a crystal element in which an IC is added inside a package to constitute an oscillation circuit is called a crystal oscillator. The product is generally encapsulated by a metal shell, and also encapsulated by a glass shell, ceramic or plastic.

Since the oscillation characteristic of the quartz crystal changes with a change in temperature, the output frequency of the quartz crystal oscillator is affected, and the oven controlled crystal oscillator is a crystal oscillator in which the temperature of the crystal oscillator or the quartz crystal resonator is kept constant by using an oven, and the amount of change in the output frequency of the oscillator caused by a change in the ambient temperature is minimized.

However, the conventional crystal oscillator has some problems, for example, when the crystal oscillator is applied to electronic instruments such as a global positioning system, a communication system, a metering system, a remote measuring and controlling system, a spectrum and network analyzer, etc., the crystal oscillator itself does not have a positioning device, which results in that a precise signal source cannot be provided, and the conventional crystal oscillator cannot maintain the internal temperature constant.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a based on big dipper navigation double flute constant temperature crystal oscillator to the crystal oscillator itself that proposes in solving above-mentioned background art does not have the positioner, leads to unable accurate signal source that provides, and the constant problem of unable inside temperature of maintaining still exists to the crystal oscillator that has now simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: a double-groove constant temperature crystal oscillator based on Beidou navigation comprises a constant temperature crystal oscillator body, wherein the constant temperature crystal oscillator body consists of a constant temperature groove, a phenolic resin insulation plate and a quartz crystal oscillator, the bottom end of the thermostatic bath is embedded and connected with a phenolic resin insulating plate, a circuit board is fixedly arranged inside the phenolic resin insulating plate, the circuit board is connected with the quartz crystal vibrator through pins, the pins are fixedly arranged on four corners of the bottom end of the circuit board, the four pins penetrate through the phenolic resin insulating plate, the middle part of the inner cavity of the thermostatic bath is provided with a graphene heat conducting plate, the graphene heat-conducting plate divides the thermostatic bath into a first thermostatic chamber and a second thermostatic chamber, pt100 temperature sensors are fixedly mounted in the first thermostatic chamber and the second thermostatic chamber, and the pt100 temperature sensors are electrically connected with a circuit board.

As a preferred technical scheme of the utility model, two standing grooves that parallel, one of them have been seted up on the top of constant temperature groove the inside block of standing groove is connected with MXT2708A big dipper locater, one of them one side of standing groove is fixed to be equipped with anti-groove of tearing open.

As an optimal technical scheme of the utility model, the internally mounted in first thermostatic chamber has first semiconductor refrigeration piece, the internally mounted in second thermostatic chamber has second semiconductor refrigeration piece, just second semiconductor refrigeration piece and first semiconductor refrigeration piece all are connected with the phenolic resin insulation board through the wire.

As an optimal technical scheme of the utility model, quartz crystal oscillator, second semiconductor refrigeration piece and first semiconductor refrigeration piece all are located the inside of thermostatic bath.

as an optimized technical scheme of the utility model, the fixed metal fiber layer of protecting against radiation that is equipped with of lateral surface of thermostatic bath.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a based on big dipper navigation double flute constant temperature crystal oscillator, standing groove and MXT2708A big dipper locater through being equipped with, the constant temperature crystal oscillator body of being convenient for improves accurate signal source, accurate transmission locating information, through the anti-groove of tearing open that is equipped with, be convenient for install and change MXT2708A big dipper locater, first semiconductor refrigeration piece and second semiconductor refrigeration piece through being equipped with, according to pt100 temperature sensor's real-time detection, the temperature control of the constant temperature bath of being convenient for is more accurate, improve the precision of constant temperature crystal oscillator body.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

Fig. 2 is a schematic view of the internal structure of the present invention.

In the figure: 1. an oven controlled crystal oscillator body; 2. a thermostatic bath; 3. a phenolic resin insulating board; 4. a pin; 5. a placement groove; 6. MXT2708A Beidou positioning instrument; 7. reversely disassembling the groove; 8. a first semiconductor refrigeration chip; 9. a second semiconductor refrigeration chip; 10. a circuit board; 11. a quartz crystal vibrator; 12. pt100 temperature sensor; 13. graphite alkene heat-conducting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the utility model provides a double-groove oven controlled crystal oscillator based on Beidou navigation, which comprises an oven controlled crystal oscillator body 1, the oven controlled crystal oscillator body 1 is composed of an oven controlled groove 2, a phenolic resin insulation board 3 and a quartz crystal oscillator 11, the bottom end of the oven controlled groove 2 is embedded and connected with the phenolic resin insulation board 3, a circuit board 10 is fixedly arranged inside the phenolic resin insulation board 3, the circuit board 10 is connected with the quartz crystal oscillator 11 through pins, four corners of the bottom end of the circuit board 10 are all fixedly provided with pins 4, and the four pins 4 all pass through the phenolic resin insulation board 3, a graphene heat conduction board 13 is arranged in the middle of the inner cavity of the oven controlled groove 2, the graphene heat conduction board 13 divides the oven controlled groove 2 into a first oven controlled temperature cavity and a second oven controlled temperature cavity, the inside of the first oven controlled temperature cavity and the second oven controlled temperature cavity are, and the two pt100 temperature sensors 12 are electrically connected with the circuit board 10.

Preferably, two standing grooves 5 that parallel are seted up to the top of constant temperature tank 2, and the inside block of one of them standing groove 5 is connected with MXT2708A big dipper locater 6, and one side of one of them standing groove 5 is fixed to be equipped with and to turn back tear groove 7 open, and the constant temperature crystal oscillator body 1 of being convenient for improves accurate signal source, accurate transmission locating information, and the groove 7 that turns back to tear is convenient for install and change MXT2708A big dipper locater 6 simultaneously.

Preferably, the internally mounted of first thermostatic chamber has first semiconductor refrigeration piece 8, and the internally mounted of second thermostatic chamber has second semiconductor refrigeration piece 9, and second semiconductor refrigeration piece 9 and first semiconductor refrigeration piece 8 all are connected with phenolic resin insulation board 3 through the wire, and the temperature control of the constant temperature chamber 2 of being convenient for is more accurate, improves the precision of thermostatic crystal oscillator body 1.

Preferably, the quartz crystal oscillator 11, the second semiconductor refrigeration piece 9 and the first semiconductor refrigeration piece 8 are all located inside the thermostatic bath 2, so that better work of the thermostatic crystal oscillator body 1 is facilitated.

Preferably, the outer side surface of the thermostatic bath 2 is fixedly provided with a metal fiber radiation-proof layer, and the metal fiber radiation-proof layer improves the radiation resistance of the thermostatic crystal oscillator body 1 and avoids signal interference influence.

When the utility model is used, the utility model relates to a based on big dipper navigation double flute constant temperature crystal oscillator, the staff places MXT2708A big dipper locator 6 inside one of them standing groove 5 through anti-tear down the groove 7, MXT2708A big dipper locator 6 is convenient for constant temperature crystal oscillator body 1 to improve accurate signal source, accurate transmission locating information, four pins 4 are connected with the instrument, when constant temperature crystal oscillator body 1 begins to work, because the oscillation characteristic of quartz crystal changes along with the change of temperature, when pt100 temperature sensor 12 detects the temperature in constant temperature crystal oscillator body 1 and becomes low, transmit the signal to circuit board 10, after the central processing unit on circuit board 10 handles, make second semiconductor refrigeration piece 9 and first semiconductor refrigeration piece 8 work, heat, when pt100 temperature sensor 12 detects the temperature in constant temperature crystal oscillator body 1 and becomes high, give circuit board 10 with signal transmission, after the central processing unit on circuit board 10 handles for second semiconductor refrigeration piece 9 and the work of first semiconductor refrigeration piece 8 refrigerate, because the existence of graphite alkene heat-conducting plate 13, make the temperature conduction of constant temperature tank 2 even, so relapse, make the output frequency of constant temperature crystal oscillator body 1 keep invariable not influenced.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a based on big dipper navigation double flute constant temperature crystal oscillator, includes constant temperature crystal oscillator body (1), its characterized in that, constant temperature crystal oscillator body (1) is by constant temperature bath (2), phenolic resin insulation board (3) and quartz crystal oscillator (11), the bottom and phenolic resin insulation board (3) of constant temperature bath (2) are inlayed and are established and be connected, the inside fixed mounting of phenolic resin insulation board (3) has circuit board (10), circuit board (10) are connected with quartz crystal oscillator (11) through the stitch, the equal fixed mounting of four corners of circuit board (10) bottom has pin (4), and four pin (4) all pass phenolic resin insulation board (3), the mid-mounting of constant temperature bath (2) inner chamber has graphite alkene heat-conducting plate (13), graphite alkene heat-conducting plate (13) divide constant temperature bath (2) into first thermostatic chamber and second thermostatic chamber, the inside of first thermostatic chamber and second thermostatic chamber all fixed mounting have pt100 temperature sensor (12), and two pt100 temperature sensor (12) are even circuit board (10) electric connection.

2. The Beidou navigation based dual-slot oven controlled crystal oscillator according to claim 1, characterized in that: the top end of the constant temperature groove (2) is provided with two parallel placing grooves (5), the inside of one of the placing grooves (5) is connected with an MXT2708A Beidou positioning instrument (6) in a clamping manner, and one side of the one of the placing grooves (5) is fixedly provided with an anti-dismantling groove (7).

3. The Beidou navigation based dual-slot oven controlled crystal oscillator according to claim 1, characterized in that: the interior mounting of first thermostatic chamber has first semiconductor refrigeration piece (8), the interior mounting of second thermostatic chamber has second semiconductor refrigeration piece (9), just second semiconductor refrigeration piece (9) and first semiconductor refrigeration piece (8) all are connected with phenolic resin insulation board (3) through the wire.

4. The Beidou navigation based dual-slot oven controlled crystal oscillator according to claim 1, characterized in that: the quartz crystal vibrator (11), the second semiconductor refrigerating piece (9) and the first semiconductor refrigerating piece (8) are all located inside the thermostatic bath (2).

5. The Beidou navigation based dual-slot oven controlled crystal oscillator according to claim 1, characterized in that: and a metal fiber radiation-proof layer is fixedly arranged on the outer side surface of the thermostatic bath (2).