Artillery firing speed measuring equipment

Abstract

The invention provides an artillery firing speed measuring device. The artillery firing speed measuring device comprises a case, a console, a power supply unit and a processing unit. The console is used for controlling the measuring equipment, is mounted outside the case and communicates with the processing unit, the console comprises a button module and a display, the button module is used for receiving a firing speed measurement control instruction, and the display is used for displaying an artillery firing speed measurement result. The power supply unit is used for supplying power to the processing unit and the display. And the processing unit is used for acquiring the firing speed measurement control instruction sent by the button module, acquiring a voltage signal of the artillery residual ammunition sensor, calculating the artillery firing speed according to the acquired signal, and displaying the calculated artillery firing speed result through the display. The gun shooting speed measuring device can replace an oscilloscope to measure the gun shooting speed, software and hardware are combined, the structure is compact, carrying is convenient, the gun shooting speed can be automatically measured, calculated and displayed, operation is stable, the gun shooting speed measuring convenience and measuring efficiency are improved, and normal use of a gun is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of gun firing rate measurement, and in particular relates to a gun firing rate measurement device. Background Art

[0002] During the production and debugging, firing test, maintenance inspection, and after-sales service of artillery, its fire control function performance indicators (rate of fire) must be evaluated, inspected, and measured. At present, the method of measuring the rate of fire of artillery is to use a high-sampling rate oscilloscope to collect the voltage signal waveform of the artillery residual shell sensor, and then manually calculate the rate of fire. The disadvantage of this method is that the measurement of the rate of fire of artillery is completely dependent on the oscilloscope. Especially when measuring the rate of fire in field support and after-sales service, it is inconvenient to carry a large oscilloscope, and the work efficiency is low; in addition, some artillery users need to measure the rate of fire during the test, but they do not understand the oscilloscope measurement method and the rate of fire calculation method, and cannot complete the measurement work independently, which affects the normal use of the artillery. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art that the artillery rate of fire measurement completely relies on an oscilloscope, which leads to inconvenient measurement, low working efficiency and affects the normal use of the artillery, and to provide a portable, automatic and easy-to-use multi-model artillery rate of fire measurement device.

[0004] To achieve the above purpose, the technical solution provided by the present invention is:

[0005] The present invention provides a gun firing rate measuring device, comprising a chassis, a control console, a power supply unit and a processing unit;

[0006] The chassis is used to support the console, power supply unit and processing unit;

[0007] The control console is used to control the measuring device, is installed outside the chassis and communicates with the processing unit, and includes a button module and a display. The button module is used to receive the rate of fire measurement control instruction, and the display is used to display the gun rate of fire measurement result;

[0008] The power supply unit is used to provide power to the processing unit and the display;

[0009] The processing unit is used to obtain the firing rate measurement control instruction sent by the button module, collect the voltage signal of the artillery residual bullet sensor and calculate the artillery firing rate according to the collected signal, and display the calculated artillery firing rate result through the display.

[0010] Furthermore, the power supply unit includes a battery and a power conversion circuit, and the power conversion circuit is used to convert the power supply voltage of the battery into a TTL level.

[0011] Furthermore, the power conversion circuit uses a three-terminal regulator LM2940 to achieve voltage conversion.

[0012] Furthermore, the processing unit includes a PCB board and a 51 single chip microcomputer welded on the PCB board.

[0013] Furthermore, the 51 single-chip microcomputer includes a STC89C51 single-chip microcomputer circuit, a crystal oscillator circuit and a reset circuit, which constitute a minimum system circuit for the single-chip microcomputer operation.

[0014] Furthermore, the chassis includes a box body and a box cover for closing the box body, the inner cavity of the box body is separated into a first chamber and a second chamber by a partition plate, the battery is accommodated in the first chamber, and the PCB board is supported and fixed in the second chamber by support columns.

[0015] Furthermore, a display is arranged in an opening on the box cover; the box cover is also provided with two test interfaces electrically connected to the PCB board, and the test interfaces are used to be electrically connected to the artillery residual ammunition sensor to receive a voltage signal from the artillery residual ammunition sensor.

[0016] Furthermore, the processing unit includes a sampling circuit, which is electrically connected to the test interface and converts the voltage signal of the artillery residual ammunition sensor into a TTL level and then sends it to the subsequent circuit.

[0017] Furthermore, the button module includes a power switch button for turning on and off the power supply of the battery to the measuring device.

[0018] Furthermore, the button module includes a product selection button for switching product models and a gear selection button for switching product firing rate gears, the processing unit includes a function selection key circuit electrically connected to the product selection button and the gear selection button, the function selection key circuit can collect firing rate measurement control instructions of the product selection button and the gear selection button, and the display can display the selected product model information and product gear information; a database containing different product models, different firing rate gears of each model product, and different firing rate calculation algorithms under each gear is established in the processing unit, and the processing unit is configured to: according to the product model and gear control instructions collected by the function selection key circuit, different firing rate calculation methods can be used for the collected residual bullet sensor voltage data, and the calculated measurement result can be compared with the theoretical firing rate to obtain the firing rate error, and it can determine whether the firing rate of the tested product is normal based on the firing rate error and the error threshold, and display the result through the display.

[0019] The advantages of the present invention are:

[0020] 1. The gun rate of fire measuring device of the present invention has the control console, power supply unit and processing unit installed on the chassis. The power supply unit can supply power to the measuring device. The operator issues a rate of fire measurement control instruction through the button module in the control console. After the processing unit obtains the control instruction, it collects the voltage signal of the gun residual shell sensor according to the control instruction and calculates the gun rate of fire, and displays the calculation result on the display in the control console. Therefore, the present invention can replace the oscilloscope to measure the gun rate of fire, and the software and hardware are combined, the structure is compact, and it is easy to carry. It can automatically measure and calculate the gun rate of fire and display it, and it has stable operation, which improves the convenience and measurement efficiency of the gun rate of fire measurement and ensures the normal use of the gun.

[0021] 2. The present invention can select product models and product firing rate gears through the product selection button and the gear selection button in combination with the display information, and adopts different firing rate measurement methods for different products with different firing rates, which can realize accurate measurement and display of the firing rates of multiple types of artillery in the range of 200f / min-9999f / min. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or other features and advantages of the present invention will become more easily understood through the following description with reference to the accompanying drawings, which are not drawn to scale and some features are exaggerated or reduced to show details of specific components. In the accompanying drawings:

[0023] Figure 1 It is a structural stereogram of the artillery firing rate measuring device of the present invention;

[0024] Figure 2 is a three-dimensional diagram of the internal structure of the gun rate of fire measuring device of the present invention, wherein the box cover is omitted;

[0025] Figure 3 It is a structural stereogram of the box body in the present invention;

[0026] Figure 4 It is a structural front view of the box cover in the present invention;

[0027] Figure 5 It is a hardware circuit block diagram of the present invention;

[0028] Figure 6 It is the minimum system circuit diagram of the single chip microcomputer in the present invention;

[0029] Figure 7 is a power conversion circuit diagram in the present invention;

[0030] Figure 8 is a sampling circuit diagram of the present invention;

[0031] Fig. 9 This is the function selection key circuit diagram of the present invention;

[0032] Fig.10 It is a software process operation block diagram of the present invention.

[0033] In the figure: 1-chassis, 11-box body, 111-first chamber, 112-second chamber, 113-partition plate, 12-box cover; 2-button module, 21-power switch button, 22-product selection button, 23-gear selection button, 3-display, 4-PCB board, 5-support column, 6-first test interface, 7-second test interface. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the accompanying drawings by means of exemplary embodiments of the present invention. It should be noted that the following detailed description of the present invention is only for the purpose of illustration, and is not intended to limit the present invention.

[0035] It should be pointed out that, in the context of the present invention, the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise" and "counterclockwise" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, terms such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0037] The invention provides a gun firing rate measuring device which is compact and easy to carry and can replace a larger oscilloscope to measure and display the gun firing rate, thereby improving the convenience and measurement efficiency of the gun firing rate measurement.

[0038] First, the overall reference Figure 1 As an exemplary embodiment of the present invention, the artillery rate of fire measurement device may include a chassis 1, a control console, a power supply unit and a processing unit. The chassis 1 is the base of the measurement device, providing an installation base for each part, used to support the control console, the power supply unit and the processing unit and electrically connected to the artillery residual shell sensor; the control console provides an operating interface for the operator to control the measurement device, which can receive the rate of fire measurement control instructions input by the operator and display the final artillery rate of fire measurement results; the power supply unit provides power to the control console and the processing unit; the processing unit is the computing and control core of the device, which can obtain the rate of fire measurement control instructions and collect the voltage signal of the artillery residual shell sensor and calculate the artillery rate of fire according to the collected signal.

[0039] Combination Figures 2 to 4 The case 1 may be a rectangular parallelepiped frame structure, including a case body 11 and a case cover 12 for closing the case body. The inner cavity of the case body 11 is divided into a first chamber 111 and a second chamber 112 by a partition plate 113. A plurality of support columns 5 for installing a processing unit are arranged in the second chamber 112. The case cover 12 may be connected to the case body 11 by screws to close the device placed in the case body.

[0040] In order to interact with the outside, the console is installed outside the chassis 1, including a button module 2 and a display 3. In particular, the display 3 is arranged in an opening opened on the box cover 12, and the button module 2 is arranged below the display. The button module 2 and the display 3 communicate with the processing unit respectively to transmit signals with the processing unit. The display 3 can select a liquid crystal display LCD12864, and the display screen is controlled by a software program to display relevant content. It should be understood that the console can also be implemented by a touch screen. In this way, there is no need to use buttons to implement the input of control commands, and the command input and speed measurement result display are directly implemented through the touch screen.

[0041] The processing unit is used to obtain the firing rate measurement control instruction sent by the button module 2, collect the voltage signal of the artillery residual bullet sensor and calculate the artillery firing rate according to the collected signal, and display the calculated artillery firing rate result through the display 3.

[0042] In an exemplary embodiment of the present invention, the processing unit includes a PCB board 4 and a 51 single-chip microcomputer welded on the PCB board 4. The PCB board 4 is supported and fixed in the second chamber 112 of the box body 11 by a support column 5, and is especially fixed horizontally in the second chamber 112 to save space and make the device compact. Relevant electronic components are welded on the PCB board 4, and the single-chip microcomputer system on the PCB board 4 is burned with a software program. The display 3 can be electrically connected to the PCB board 4 through a wire, and the software program controls the display 3 to display the required information such as the product firing speed. The 51 single-chip microcomputer includes an STC89C51 single-chip microcomputer circuit, a crystal oscillator circuit, and a reset circuit, which constitute the minimum system circuit for the single-chip microcomputer to run. Figure 5 The hardware circuit of the measuring device is shown as an example. The single-chip microcomputer running the minimum system circuit is one of the circuits in the hardware circuit, such as Figure 6 shown.

[0043] The box cover 12 is provided with two test interfaces electrically connected to the PCB board 4, namely the first test interface 6 and the second test interface 7. The test interface can adopt a standard banana socket, which is provided at the button module 2 and fixed on the box cover 12 by the socket's own spare mother. The test interfaces 6 and 7 are used to electrically connect to the artillery residual shell sensor to receive the voltage signal of the artillery residual shell sensor. Specifically, one test interface is the artillery residual shell sensor signal interface, and the other test interface is the artillery residual shell sensor signal "negative pole", which is connected to the PCB board 4 by welding with a wire. The two test interfaces can be distinguished by different colors and arranged in a row for easy connection operation.

[0044] In some embodiments, in order to facilitate the use of the measuring device in an environment without an external power supply and improve the applicability of the device, the power supply unit includes a battery and a power conversion circuit, and the battery is accommodated in the first chamber 111 of the box body 11. The button module 2 may include a power switch button 21, which is used to turn on and off the power supply of the battery to the measuring device. The power switch button 21 can adopt a standard round button switch, which is fixed on the box cover 12 by the button switch's own spare mother, and can realize manual pressing of the "button" to cut off the power supply. The power conversion circuit is another circuit in the hardware circuit. Figure 7 As shown in the figure, it is used to convert the battery supply voltage into TTL level. The power conversion circuit is a known mature technology. Preferably, the power conversion circuit uses a three-terminal regulator LM2940 to achieve voltage conversion, converting the 9V battery power voltage into a 5V voltage for use by various circuits. A diode is connected in series with the positive pole of the line to prevent the positive and negative poles at the front end from being reversed and damaging the device; a switch is connected in series with the positive pole of the line to power on and off the entire device.

[0045] like Figure 8 As shown, in order to realize the acquisition of the artillery residual shell sensor signal, the processing unit may include a sampling circuit, which is electrically connected to the test interfaces 6 and 7, and converts the voltage signal of the artillery residual shell sensor into a TTL level and then sends it to the subsequent circuit. A diode is connected in series with the signal input end of the sampling circuit to prevent the input residual shell signal and the negative line from being reversely connected to damage the equipment. A photoelectric coupler is used to isolate and reduce the 15V voltage of the input residual shell signal, and convert it into a 5V level signal and send it to the single-chip microcomputer for calculation and processing.

[0046] Taking into account the different working modes of different products, for example, high-rate products reach the theoretical rate of fire after a certain period of operation, low-rate products reach the theoretical rate of fire very quickly during operation, and different products have different numbers of residual bullet sensor output signals when working. The rate of fire measurement requires measuring the theoretical rate of fire of the product after it reaches stability. Therefore, in order to meet the high-accuracy measurement of various rates of fire of various products, in a preferred embodiment of the present invention, the button module 2 includes a product selection button 22 for switching product models and a gear selection button 23 for switching product gears, i.e., the product rate of fire, to receive the operator's rate of fire measurement control instructions for product models and gears. The button can be set below the test interface and arranged in a row with the power switch button 21. A standard round button switch is used, and the button switch is fixed on the box cover 12 with its own spare mother, so that manual pressing of the "button" can be realized to switch the model of the product being tested and select the speed gear. The processing unit includes a function selection key circuit electrically connected to the product selection button 22 and the gear selection button 23. The function selection key circuit can collect the rate of fire measurement control instructions of the product selection button 22 and the gear selection button 23, such as Fig. 9 As shown, the function selection key circuit includes resistors R30, R31 and a key to form an independent keyboard circuit. When the key is kept in a free state, the key signal is a 5V high level, and when the key is pressed, the key signal is a 0V low level. Therefore, the key instruction can be collected by the difference in the high and low levels of the key signal. At the same time, the display 3 displays the currently selected product model information and gear information in real time, so that the operator can complete the setting of the product model and the corresponding shooting speed gear.

[0047] At the same time, a database containing different product models, different firing speed gears of each model, and different firing speed calculation algorithms under each gear is established in the processing unit. In addition, the processing unit can be configured to: be able to use different firing speed calculation methods for the collected residual bullet sensor voltage data according to the product model and gear control instructions collected by the function selection button circuit, and compare the calculated measurement result with the theoretical firing speed to obtain the firing speed error, and be able to determine whether the firing speed of the tested product is normal based on the firing speed error and the set error threshold, and display the result through the display. The specific process of determining the firing speed measurement result based on the firing speed error can be: if the firing speed error is less than the set error threshold, the firing speed of the tested product is determined to be normal, and the measurement result is displayed through the display; if the firing speed error is greater than or equal to the error threshold, the firing speed of the tested product is determined to be abnormal, and the measurement result and abnormal information are displayed through the display.

[0048] Exemplarily, the database of the processing unit may include three product models, namely, model A product, model B product, and model C product (product firing rates from low to high), and may include three product firing rate gears, namely, low gear, medium gear, and high gear (firing rates from low to high), for model A product and model B product respectively, and may also include a product firing rate gear, namely, a low gear, for model C product.

[0049] At the same time, the processing unit is specifically configured as follows:

[0050] When the product is set as "A model product":

[0051] When the "low gear" is set (theoretical firing rate 4000f / min (rounds / minute)-4200f / min range), the system collects all residual bullet voltage signals, and the processing unit collects the voltage signals of the first 10 residual bullet sensors during product operation but does not process them, and performs average collection and calculation for the accumulated 10 rounds after the 11th round. Finally, the processing unit compares the comprehensive average measurement result with the current theoretical firing rate. When the error is within 2 rounds, it is determined that the firing rate of the tested product is normal, and the average measurement result is displayed on the display. When the error is greater than or equal to 3 rounds, it is determined that the firing rate of the tested product is abnormal, and the average measurement result and abnormal information are displayed on the display.

[0052] When the "middle gear" is set (theoretical firing rate range of 6000f / min-6200f / min), the system collects all residual bullet voltage signals, and the processing unit collects the residual bullet sensor voltage signal within the first 0.3 seconds of the product operation but does not process it, and performs average collection and calculation for the accumulated 10 rounds after 0.3 seconds. Finally, the processing unit comprehensively compares the average measurement result with the current theoretical firing rate. When the error is within 3 rounds, it is determined that the firing rate of the tested product is normal, and the average measurement result is displayed on the display. When the error is greater than or equal to 4 rounds, it is determined that the firing rate of the tested product is abnormal, and the average measurement result and abnormal information are displayed on the display.

[0053] When the "high position" (theoretical firing rate range of 9000f / min-9200f / min) is set, the system collects all residual bullet voltage signals, and the processing unit collects the residual bullet sensor voltage signal within the first 0.5 seconds of the product operation but does not process it, and performs average collection and calculation of the accumulated 10 rounds after 0.5 seconds. Finally, the processing unit comprehensively compares the single measurement result, the average measurement result and the current theoretical firing rate. When the error is within 5 rounds, it is determined that the firing rate of the tested product is normal, and the average measurement result is displayed on the display. When the error is greater than or equal to 6 rounds, it is determined that the firing rate of the tested product is abnormal, and the average measurement result and abnormal information are displayed on the display.

[0054] When the product is set as "B model product":

[0055] When the "low gear" is set (theoretical firing rate range of 1000f / min-1200f / min), the system collects all residual bullet voltage signals, and the processing unit collects the voltage signals of the first 5 and last 5 residual bullet sensors during product operation but does not process them, and performs single acquisition calculation and average acquisition calculation on the remaining signals. Finally, the processing unit comprehensively compares the single measurement results, the average measurement results and the current theoretical firing rate. When the error is within 1 round, it is determined that the firing rate of the tested product is normal, and the average measurement result is displayed on the display. When the error is greater than or equal to 2 rounds, it is determined that the firing rate of the tested product is abnormal, and the average measurement result and abnormal information are displayed on the display.

[0056] When the "middle gear" is set (theoretical firing rate range of 2000f / min-2200f / min), the system collects all residual bullet voltage signals, and the processing unit collects the residual bullet sensor voltage signal within the first 0.2 seconds of the product operation but does not process it, and performs average collection and calculation of the accumulated 10 rounds after 0.2 seconds. Finally, the processing unit comprehensively compares the single measurement result, the average measurement result and the current theoretical firing rate. When the error is within 2 rounds, it is determined that the firing rate of the tested product is normal, and the average measurement result is displayed on the display. When the error is greater than or equal to 3 rounds, it is determined that the firing rate of the tested product is abnormal, and the average measurement result and abnormal information are displayed on the display.

[0057] When the "high position" (theoretical firing rate range of 4000f / min-4200f / min) is set, the system collects all residual bullet voltage signals, and the processing unit collects the residual bullet sensor voltage signal within the first 0.3 seconds of the product operation but does not process it, and performs average collection and calculation for the accumulated 10 rounds after 0.3 seconds. Finally, the processing unit comprehensively compares the average measurement result with the current theoretical firing rate. When the error is within 3 rounds, it is determined that the firing rate of the tested product is normal, and the average measurement result is displayed on the display. When the error is greater than or equal to 4 rounds, it is determined that the firing rate of the tested product is abnormal, and the average measurement result and abnormal information are displayed on the display.

[0058] When the product is set as "C model product":

[0059] Set the "low gear" (theoretical rate of fire range of 285f / min-315f / min). When the product's fire control is running, the system collects all residual bullet voltage signals. The processing unit collects the voltage signals of the sensors for the first 2 rounds and the last 2 rounds of residual bullets during product operation but does not process them. It performs average sampling calculation on the remaining signals. Finally, the processing unit comprehensively compares the average measurement result with the current theoretical rate of fire. When the error is within 1 round, the rate of fire of the tested product is determined to be normal, and the average measurement result is displayed on the display. When the error is greater than or equal to 2 rounds, the rate of fire of the tested product is determined to be abnormal, and the average measurement result and abnormal information are displayed on the display.

[0060] Return to see Figure 6 In the single-chip microcomputer running minimum system circuit, U00 is the single-chip microcomputer, pins 43 and 44 are connected to the key circuit to collect product model and gear information, pins 14 and 15 are connected to the crystal oscillator circuit, and the crystal oscillator Y00 must use 12Mhz to provide accurate timing standards for the system, pin 4 is connected to the reset circuit, which is a necessary circuit for the single-chip microcomputer system, pins 5 and 7 are connected to the program burning interface to burn the program, and pin 8 is connected to the sampling circuit to collect the product residual voltage signal. Figure 6 The schematic diagram shown corresponds to connecting the program burning circuit and the dedicated program burning interface, and using the microcontroller program burning software to burn the software program.

[0061] like Fig.10 As shown, it is a flow chart of the system software operation. After the system is powered on, the single-chip microcomputer port, timer, variable, display, and button function are initialized to the default state first. According to the model of the product to be tested, the current product model is set by clicking the button and then the running firing rate gear is set. The current set product model and gear information are displayed in real time by the display. After the setting is completed, the product starts to run and generates a residual bullet voltage signal. The measuring equipment runs the program pre-configured with the corresponding measurement method according to the set product model and gear, collects the residual bullet voltage signal in the corresponding way, and the timer counts, performs relevant filtering processing, calculates the measurement results, determines the validity of the measurement results and displays the data results. It can be seen that with this configuration, the measuring equipment of the present invention can realize the accurate measurement and display of the firing rate of multiple models of artillery in the range of 200f / min-9999f / min.

[0062] Next, the working principle of the gun rate of fire measurement device provided by the present invention is described as follows:

[0063] Step S1, connecting the signal of the product under test to the first test interface 6 and the second test interface 7;

[0064] Step S2, press the power switch button 21 at the button module 2, and the battery supplies power to the measuring device. After the system initialization program is completed, the measuring personnel select the corresponding product and shooting speed gear according to the measured product information through the product selection button 22 and the gear selection button 23 at the button module 2, and the display 3 displays the basic information such as the measured product model, the measured product name, and the gear;

[0065] Step S3, after preparation is completed, the product under test starts to perform the fire control performance action. After the action is completed, the rate of fire measurement equipment automatically collects the artillery residual bullet sensor signal and processes it, and displays the calculated rate of fire data on the display 3, thereby achieving the purpose of automatic detection, calculation, processing and display of the artillery rate of fire.

[0066] Therefore, as described above, the gun rate of fire measuring device of the present invention has the control console, power supply unit and processing unit installed on the chassis, the power supply unit can supply power to the measuring device, the operator sends a rate of fire measurement control instruction through the button module in the control console, after the processing unit obtains the control instruction, it collects the voltage signal of the gun residual shell sensor according to the control instruction and calculates the gun rate of fire, and displays the calculation result on the display in the control console. Therefore, the present invention can replace the oscilloscope to measure the gun rate of fire, and the software and hardware are combined, the structure is compact, easy to carry, and the gun rate of fire can be automatically measured and calculated and displayed, and the operation is stable, which improves the convenience and measurement efficiency of the gun rate of fire measurement and ensures the normal use of the gun.

[0067] Finally, it should be noted that the features mentioned and / or shown in the above description of the exemplary embodiments of the present invention may be combined in the same or similar manner into one or more other embodiments, combined with the features in other embodiments or substituted for the corresponding features in other implementations. The technical solutions obtained by these combinations or substitutions shall also be deemed to be included in the protection scope of the present invention.

Claims

1. A gun rate of fire measuring device, characterized in that: It includes a chassis, a console, a power supply unit and a processing unit; The chassis is used to support the console, the power supply unit and the processing unit; The console is used to control the measuring device, is installed outside the chassis and communicates with the processing unit, and includes a button module and a display, wherein the button module is used to receive a rate of fire measurement control instruction, and the display is used to display the gun rate of fire measurement result; The power supply unit is used to provide power to the processing unit and the display; The processing unit is used to obtain the firing rate measurement control instruction sent by the button module, collect the voltage signal of the artillery residual bullet sensor and calculate the artillery firing rate according to the collected signal, and display the calculated artillery firing rate result through the display.

2. The artillery rate of fire measuring device according to claim 1, characterized in that: The power supply unit includes a battery and a power conversion circuit, and the power conversion circuit is used to convert the power supply voltage of the battery into a TTL level.

3. The artillery rate of fire measuring device according to claim 2, characterized in that: The power conversion circuit uses a three-terminal voltage regulator LM2940 to achieve voltage conversion.

4. The artillery rate of fire measuring device according to claim 2 or 3, characterized in that: The processing unit comprises a PCB board and a 51 single chip microcomputer welded on the PCB board.

5. The artillery rate of fire measuring device according to claim 4, characterized in that: The 51 single-chip microcomputer comprises a STC89C51 single-chip microcomputer circuit, a crystal oscillator circuit and a reset circuit, forming a minimum system circuit for the single-chip microcomputer operation.

6. The artillery rate of fire measuring device according to claim 4, characterized in that: The chassis includes a box body and a box cover for closing the box body. The inner cavity of the box body is divided into a first chamber and a second chamber by a partition plate. The battery is accommodated in the first chamber, and the PCB board is supported and fixed in the second chamber by supporting columns.

7. The artillery rate of fire measuring device according to claim 6, characterized in that: The display is arranged in the opening on the box cover; the box cover is also provided with two test interfaces electrically connected to the PCB board, and the test interfaces are used to be electrically connected to the artillery residual ammunition sensor to receive the voltage signal of the artillery residual ammunition sensor.

8. The artillery rate of fire measuring device according to claim 7, characterized in that: The processing unit includes a sampling circuit, which is electrically connected to the test interface and converts the voltage signal of the artillery residual shell sensor into a TTL level and then sends it to the subsequent circuit.

9. The gun rate of fire measuring device according to claim 2 or 3, characterized in that: The button module includes a power switch button for turning on and off the power supplied by the battery to the measuring device.

10. The artillery firing rate measuring device according to claim 1 or 2, characterized in that: The button module includes a product selection button for switching product models and a gear selection button for switching product firing speed gears, the processing unit includes a function selection key circuit electrically connected to the product selection button and the gear selection button, the function selection key circuit can collect the firing speed measurement control instructions of the product selection button and the gear selection button, and the display can display the selected product model information and product gear information; The processing unit has a database containing different product models, different firing rate gears of each model, and different firing rate calculation algorithms under each gear, and the processing unit is configured to: be able to use different firing rate calculation methods for the collected residual bullet sensor voltage data according to the product model and gear control instructions collected by the function selection button circuit, compare the calculated measurement result with the theoretical firing rate to obtain the firing rate error, and be able to determine whether the firing rate of the tested product is normal based on the firing rate error and the error threshold, and display the result on the display.

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