CN111964690A

CN111964690A - Quartz tuning fork gyroscope gauge outfit screening test device

Info

Publication number: CN111964690A
Application number: CN202010678964.7A
Authority: CN
Inventors: 王汝弢; 王永胜; 刘飞; 梁文华; 申燕超; 杨星辉
Original assignee: Beijing Automation Control Equipment Institute BACEI
Current assignee: Beijing Automation Control Equipment Institute BACEI
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2020-11-20
Anticipated expiration: 2040-07-15
Also published as: CN111964690B

Abstract

The invention discloses a quartz tuning fork gyroscope gauge outfit screening test device which comprises a tool casing structure (2), a gauge outfit mounting bracket (12), a measurement and control circuit (4), a vibration damping assembly, a locking assembly, a round hole socket and a flexible metal belt. The quartz tuning fork gyroscope gauge head (1) is installed on a gauge head installing support (12) through a locking assembly, and the gauge head installing support (12) is in signal connection with a power supply ground of the measurement and control circuit (4) through a metal belt (6). And the gauge outfit mounting bracket (12) is fixedly connected with the tool shell structure (2) through a vibration reduction assembly. The meter head mounting support (12) is provided with a hole corresponding to the position of the external lead wire of the meter head, a round hole socket is arranged in the hole, the meter head lead wire is inserted into the round hole socket, and the lead wire end of the round hole socket is connected with the measurement and control circuit (4) through a flexible metal belt. The method is used for screening the quartz tuning fork gyroscope gauge head, effectively inhibits the interference error of the test, and improves the test efficiency.

Description

Quartz tuning fork gyroscope gauge outfit screening test device

Technical Field

The invention relates to the technical field of tuning fork sensor testing, in particular to a device for screening and testing a quartz tuning fork gyroscope gauge head.

Background

The quartz tuning fork gyroscope gauge head (tuning fork sensor) is a sensitive element and a core device of the quartz tuning fork gyroscope, an independent sensor component is formed after a sensitive structure is slightly added and packaged, screening test needs to be carried out on the gauge head before the gyroscope is formed by assembling a matched measurement and control circuit, so that the performance of the gauge head is obtained, and the performance grading of the gauge head is carried out to be used as a basis for matching with gyroscopes with different performance grades. In the process of screening and testing the gauge heads, because the gauge head signals are weak and are easy to interfere, the screening and testing tool needs to meet the requirements of weak signal detection, and meanwhile, the requirements of batch testing are met, and the requirements of quick mounting and dismounting of the gauge heads are met.

The quartz tuning fork gyroscope gauge head is a sensor for sensing angular velocity based on the Coriolis vibration principle, and consists of a driving electrode and a detecting electrode, and the gauge head is matched with an external measurement and control circuit to output a direct current voltage signal linear with the angular velocity through sensing the external angular velocity. In a user application scenario, the angular velocity signal is finally converted by an external voltage measurement circuit. When the reference vibration is established, an excitation voltage signal required by the driving end is a square wave signal with a peak value of about 4V, a current signal output by the driving electrode is uA level, and charge signals which represent the angular velocity and are output by the detection end are weak signals at pC level. The signal of the detection end is smaller than that of the driving end, the size of the sensor is smaller, and an electric coupling channel from the driving end to the detection end is formed. Therefore, the isolation of the test process to external disturbance, including micro displacement caused by the stress of the gauge head, needs to be solved in the gauge head screening test tool; the problem that in the process of testing the meter head is solved, the weak signal of the detection end and the strong signal of the driving end are shielded and isolated by electric coupling; the problem of test efficiency improvement is solved, and the requirements of quick installation and disassembly are met.

At present, the quartz tuning fork gyroscope gauge outfit adopts traditional metal packaging tube shell (TO) form, and is similar TO quartz crystal oscillator comparison in the encapsulation form, and the quartz crystal oscillator trade has formed dedicated screening test device and standard through many years's development. However, the difference between the crystal oscillator and the gauge outfit of the quartz tuning fork gyroscope is that if the output signal form is inconsistent, the crystal oscillator outputs a frequency signal, and the gyroscope gauge outfit finally outputs an angular velocity signal; the screening of the gyro meter head directly refers to the fact that a screening test device in the crystal oscillator industry cannot evaluate the performance of the gyro meter head correctly due to the difference of sensitivity and the like of external disturbance.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a quartz tuning fork gyroscope gauge outfit screening test tool, which can effectively inhibit test interference errors and realize correct evaluation of the performance of the quartz tuning fork gyroscope.

In order to solve the technical problem, the invention is realized as follows:

a quartz tuning fork gyroscope gauge outfit screening test device comprises a tool casing structure, a gauge outfit mounting bracket, a measurement and control circuit, a vibration damping assembly, a locking assembly, a round hole socket and a flexible metal belt;

the quartz tuning fork gyroscope gauge head is arranged on a gauge head mounting bracket through a locking assembly, and the gauge head mounting bracket is in signal connection with a power ground of the measurement and control circuit through a metal belt;

the gauge outfit mounting bracket is fixedly connected with a tool shell structure through a vibration reduction assembly formed by adopting a silicon rubber material and an integrated molding process;

the meter head mounting support is provided with a hole corresponding to the position of the meter head external lead, a round hole socket is arranged in the hole, the meter head lead is inserted into the round hole socket, and the lead end of the round hole socket is connected with the measurement and control circuit through a flexible metal strip.

Furthermore, the upper limit of the round hole socket is arranged above the hole of the gauge outfit mounting bracket, so that the round hole socket is prevented from being taken out of the gauge outfit mounting bracket by the gauge outfit lead in the disassembly preventing process.

Further, the locking assembly is composed of a screw, a spring and a pressing sheet.

The invention has the following effective effects:

1) by designing the screening tool of the quartz tuning fork gyroscope gauge head and adopting a mode of fastening the gauge head by using the mounting base and the pressing sheet based on the vibration reduction of silicon rubber, the requirement on the inhibition of external disturbance (such as incubator work and mechanical vibration crosstalk of a plurality of gauge heads) in the gauge head screening test process is met.

2) And the shielding design based on the power ground signal is adopted, so that the electric coupling shielding isolation of the weak signal of the meter head detection end and the strong signal of the driving end is realized.

3) The conventional test socket and spring locking and fixing mode is adopted, rapid installation and disassembly of the gauge head screening test are achieved, and screening test efficiency is improved.

Drawings

Fig. 1 is a schematic diagram of a quartz tuning fork gyroscope gauge head screening test device according to an embodiment of the invention.

In the figure: 1. the device comprises a quartz tuning fork gyroscope gauge outfit, 2a tooling shell structure, 3 a cover plate, 4 a measurement and control circuit, 5a and 5b damping components, 6 a grounding metal band, 7a and 7b locking component screws, 8a and 8b locking component pressing sheets, 9a and 9b locking component springs, 10a and 10b lead connecting metal bands, 11a and 11b round hole sockets, 12a gauge outfit mounting support and 12a round hole socket upper limit.

Detailed Description

The invention discloses a quartz tuning fork gyroscope gauge head screening test device, which is described in the following with reference to the accompanying drawings and embodiments:

as shown in figure 1, the quartz tuning fork gyroscope gauge outfit screening test device is composed of a tool casing structure 2, a cover plate 3, a gauge outfit mounting support 12, a measurement and control circuit 4, vibration reduction assemblies 5a and 5b, a locking assembly,

round hole sockets

10a and 10b,

flexible metal strips

11a and 11b and the like.

The screening test object is a quartz tuning fork gyroscope gauge outfit 1 and is arranged on a gauge outfit mounting bracket 12 through a locking assembly.

The tool shell structure 2 and the cover plate 3 are connected through an adhesion process or a screw locking mode, and the tool is fixedly connected with an external mounting base through the shell structure 2.

The gauge outfit mounting bracket 12 is as shown in fig. 1, the vibration reduction components 5a and 5b are formed by adopting a silicon rubber material and an integrated molding process to realize the fixed connection with the outer shell structure 2, and after the quartz tuning fork gyroscope gauge outfit 1 is mounted on the gauge outfit mounting bracket 12, the quartz tuning fork gyroscope gauge outfit 1 is isolated from the external mechanical disturbance.

The meter head mounting bracket 12 is provided with holes at the positions of the external leads through corresponding meter heads,

round hole sockets

10a and 10b are arranged in the holes, the meter head leads are inserted into the

round hole sockets

10a and 10b, and the lead ends of the

round hole sockets

10a and 10b are connected with the measurement and control circuit 4 through

flexible metal strips

11a and 11b, so that the electrical connection between the meter heads and the measurement and control circuit 4 is realized.

The measurement and control circuit 4 is fixedly connected with the tool shell structure 2 through gluing or screws, electrical connection with the gauge outfit is achieved through the

flexible metal belts

11a and 11b, output signals of the gauge outfit are processed through the measurement and control circuit 4, external test equipment is provided, and the performance of the gauge outfit is obtained through collection and analysis of the external signals.

The gauge outfit mounting bracket 12 is in signal connection with a power ground of the measurement and control circuit 4 through the metal belt 6, so that signal shielding of a gauge outfit lead is realized, and the purpose of isolating the quartz tuning fork gyroscope gauge outfit 1 from being driven to be electrically coupled to a detection end is achieved.

Preferably, an upper limit 12a of the

circular hole sockets

10a and 10b is formed above the opening of the gauge head mounting bracket 12, so as to prevent the disassembly process, and the gauge head lead brings the

circular hole sockets

10a and 10b out of the gauge head mounting bracket 12, thereby damaging the electrical connection between the jack and the measurement and control circuit.

Preferably, the locking assembly is composed of

screws

7a and 7b,

springs

8a and 8b, and pressing

sheets

9a and 9b, and is matched with the gauge outfit mounting bracket 12, so that the quartz tuning fork gyroscope gauge outfit 1 can be pressed and fixedly connected to the gauge outfit mounting bracket 12, and the gauge outfit can be quickly mounted and dismounted by the spring pressing mode.

The quartz tuning fork gyroscope head screening test device is described in detail above, and certain changes or modifications can be made to the invention without departing from the spirit scope of the invention, and the structural features are not limited to the contents disclosed in the examples.

Claims

1. A quartz tuning fork gyroscope gauge head screening test device is characterized by comprising a tool casing structure (2), a gauge head mounting support (12), a measurement and control circuit (4), vibration reduction assemblies (5a) and (5b), locking assemblies, round hole sockets (10a) and (10b) and flexible metal strips (11a) and (11 b);

the quartz tuning fork gyroscope gauge head (1) is installed on a gauge head installing support (12) through the locking assembly, and the gauge head installing support (12) is in signal connection with a power ground of the measurement and control circuit (4) through a metal belt (6);

the gauge outfit mounting bracket (12) is fixedly connected with the tool shell structure (2) through vibration reduction components (5a) and (5b) formed by silicon rubber materials;

the positions of the meter heads corresponding to the external lead wires of the meter heads are perforated on the meter head mounting support (12), round hole sockets (10a) and (10b) are arranged in the holes, the meter head lead wires are inserted into the round hole sockets (10a) and (10b), and the lead ends of the round hole sockets (10a) and (10b) are connected with the measurement and control circuit (4) through flexible metal strips (11a) and (11 b).

2. The quartz tuning fork gyroscope gauge head screening test device of claim 1, wherein the upper limit of the round hole sockets (10a), (10b) is arranged above the opening of the gauge head mounting bracket (12) for preventing the disassembly process, and the round hole sockets (10a), (10b) are taken out of the gauge head mounting bracket (12) by the gauge head lead.

3. The quartz tuning fork gyroscope header screening test device of claim 1, wherein the locking assembly is composed of a screw, a spring and a pressing sheet.