A shot counter
By installing a three-axis accelerometer and a microprocessor-based firing counter inside the stock, the problem of low efficiency in ammunition counting at the firing range was solved, achieving high-precision automatic counting and data synchronization, and improving the stability and accuracy of data management.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 临沂市理工学校
- Filing Date
- 2025-08-07
- Publication Date
- 2026-06-12
AI Technical Summary
The current method of counting the number of guns and ammunition at the firing range is inefficient, information is easily lost or damaged, and the counters have insufficient measurement dimensions and accuracy, resulting in poor stability.
Employing a combination of a three-axis accelerometer, microprocessor, data storage module, and wireless transmission module, the system uses a firing counter installed inside the stock to detect the three-axis acceleration of the firearm in real time, identify firing events, and record accurate times, achieving automatic counting and data storage, and supporting offline and online synchronization.
It achieves highly accurate gun firing detection and counting, automatically records the number of shots and ammunition usage, ensures data stability and reliability, and supports offline data storage and online synchronization.
Smart Images

Figure CN224353683U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shooting counting technology, and specifically to a shooting counter. Background Technology
[0002] As the amount of live-fire training for soldiers increases year by year, the management of firearms and ammunition at firing ranges has become more complex. At some ranges, the counting of ammunition is still done manually, leading to inefficiencies, data loss or corruption, and poor data management when dealing with large amounts of firearm data. While some counters can count automatically, they often use ordinary two-axis accelerometers, which lack sufficient measurement dimensionality, accuracy, and stability. Utility Model Content
[0003] To overcome the shortcomings of the prior art, this utility model provides a shooting counter, the specific technical solution of which is as follows:
[0004] A firing counter for installation in the stock at the rear of a machine gun includes a firing counter module, a wireless transmission module, a battery module, and an external charging dock. The firing counter module is connected to a user terminal via the wireless transmission module. The external charging dock and the battery module are both connected to the battery charging module in the firing counter module.
[0005] Preferably, the gun firing counting module further includes a triaxial accelerometer, a microprocessor, a data storage module, a voltage detection module, and a power conversion module; the triaxial accelerometer, data storage module, voltage detection module, and power conversion module are all connected to the microprocessor; the microprocessor transmits data with the user terminal via a wireless transmission module.
[0006] Preferably, the system also includes an indicator light module, which contains two indicator lights of different colors; one indicator light is connected to the voltage detection module to display the current battery voltage status; and the other indicator light is connected to the wireless transmission module to display the current network connection status.
[0007] Preferably, the triaxial accelerometer is a MEMS accelerometer ADXL377 chip with a range of ±200g.
[0008] Preferably, the microprocessor is an STM32F103C8T6 microcontroller, used to identify firing events and record the exact time of firing based on information collected by the triaxial accelerometer.
[0009] Preferably, the data storage module uses a W25Q16FLASH chip to store firing information.
[0010] Preferably, the power conversion module uses an ME6217 low dropout LDO chip to convert the battery voltage into a stable, usable voltage.
[0011] More preferably, the battery charging module uses a TP4056 battery management chip.
[0012] Furthermore, preferably, the wireless transmission module is an ESP8266 module with WIFI function; the wireless transmission module is connected to the gun firing counter module through 2×4 terminals with a spacing of 2.4mm; the gun firing counter module and the wireless transmission module are installed in a stacked manner; wherein, the wireless transmission module is on top and the gun firing counter module is on the bottom.
[0013] More preferably, the battery charging module is powered by an 850mAh 16340 lithium battery and connected to the gun firing counter module via a GH1.25-2P terminal wire.
[0014] The beneficial effects of this utility model are:
[0015] This invention utilizes a gun firing counting module to detect the gun's three-axis acceleration in real time and determine whether ammunition has been fired, achieving highly accurate gun firing detection and counting, and automatically counting the number of shots and ammunition used. Furthermore, this invention can perform offline data acquisition and storage, automatically synchronizing to the user terminal via a network connection, further enabling the storage of historical data. Attached Figure Description
[0016] The accompanying drawings constituting this utility model are provided to further understand this application and do not constitute an undue limitation on this application.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation
[0018] The specific implementation of a shooting counter provided by this utility model will be further described in conjunction with the accompanying drawings and embodiments.
[0019] like Figure 1 As shown, a firing counter is installed in the stock at the rear of a machine gun, and includes a firing counter module, a wireless transmission module, a battery module, and an external charging base. The firing counter module is connected to a user terminal via the wireless transmission module; the firing counter module includes a three-axis accelerometer, a microprocessor, a data storage module, a voltage detection module, a battery charging module, and a power conversion module.
[0020] Preferably, both the external charging base and the battery module are connected to the battery charging module in the gun firing counter module.
[0021] Preferably, the triaxial accelerometer, data storage module, voltage detection module, and power conversion module are all connected to the microprocessor; the microprocessor transmits data with the user terminal via a wireless transmission module.
[0022] Preferably, the counter further includes an indicator light module, which contains two indicator lights of different colors; one indicator light is connected to the voltage detection module to display the current battery voltage status; the other indicator light is connected to the wireless transmission module to display the current network connection status.
[0023] In an exemplary embodiment, indicator light 1 is red and indicator light 2 is blue. When the voltage detection module detects that the battery voltage is lower than a set threshold, indicator light 1 flashes, alternating between 100ms on and 100ms off. When the counter is being charged, indicator light 1 remains constantly on; under normal operating conditions, indicator light 1 is off. When the counter is not connected to the network, indicator light 2 flashes, alternating between 100ms on and 100ms off. When the counter is connected to the network, indicator light 2 remains constantly on, providing a clear understanding of the counter's current voltage and network status.
[0024] Since the acceleration generated by firearms during firing is generally above 100g, the triaxial accelerometer provided by this invention uses a MEMS accelerometer chip ADXL377 with a range of ±200g. Compared to the biaxial accelerometer used in traditional counters, the triaxial sensor can comprehensively perceive the motion state of an object in three-dimensional space (such as up / down, left / right, and forward / backward tilt), while the biaxial sensor can only detect two dimensions (such as horizontal and vertical). In addition, the triaxial sensor can more accurately determine the attitude or motion state of the device by fusing data from three dimensions. Especially in complex motion scenarios, it can reduce error accumulation, improve stability, and ensure the accuracy of the measurement results.
[0025] Preferably, the microprocessor is an STM32F103C8T6 microcontroller, used to identify firing events and record the exact time of firing based on information collected by the triaxial accelerometer.
[0026] Preferably, the data storage module uses a W25Q16FLASH chip, which can store the firing information of the counter in the absence of a network.
[0027] Preferably, the power conversion module uses the ME6217 low dropout LDO chip to convert the battery voltage into a stable usable voltage, avoiding problems such as equipment damage, data errors, and system instability caused by voltage instability.
[0028] More preferably, the battery charging module uses a TP4056 battery management chip.
[0029] Furthermore, preferably, the wireless transmission module is an ESP8266 module with WIFI function; wherein, the wireless transmission module is connected to the gun firing counter module through 2×4 terminals with a spacing of 2.4mm; the gun firing counter module and the wireless transmission module are installed in a stacked manner (the wireless transmission module is on top, and the gun firing counter module is on the bottom).
[0030] More preferably, the battery charging module is powered by an 850mAh 16340 type lithium battery and connected to the gun firing counter module via a GH1.25-2P terminal wire. It is mainly used to charge the lithium battery and prevent the lithium battery from being overcharged.
[0031] It is worth noting that the counter structure shell provided by this utility model is 3D printed from carbon fiber material with quantified mechanical properties. Its internal cavity has several module mounting areas and wiring channels. During installation, it is necessary to ensure that the gun firing counter module and the wireless transmission module are stacked in the same area. Additionally, the surface of the structure shell is marked with installation guidance arrows to prevent installation errors.
[0032] This invention utilizes a gun firing counting module to detect the gun's three-axis acceleration in real time and determine whether ammunition has been fired, achieving highly accurate gun firing detection and counting, and automatically counting the number of shots and ammunition used. Furthermore, this invention can perform offline data acquisition and storage, automatically synchronizing to the user terminal via a network connection, further enabling the storage of historical data.
[0033] In this utility model, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are merely used to facilitate the description of the structural relationships of the various components or elements of this utility model and do not specifically refer to any part or element of this utility model; they should not be construed as limiting this utility model. Terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and they should not be construed as limiting this utility model.
[0034] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A firing counter for mounting in the stock at the rear of a machine gun, characterized in that, It includes a gun firing counter module, a wireless transmission module, a battery module, and an external charging dock; The gun firing counter module is connected to the user terminal via a wireless transmission module; Both the external charging base and the battery module are connected to the battery charging module in the gun firing counter module.
2. The firing counter according to claim 1, characterized in that, The gun firing counting module also includes a three-axis accelerometer, a microprocessor, a data storage module, a voltage detection module, and a power conversion module; The triaxial accelerometer, data storage module, voltage detection module, and power conversion module are all connected to the microprocessor; The microprocessor transmits data with the user terminal via a wireless transmission module.
3. The firing counter according to claim 1, characterized in that, It also includes an indicator light module, which contains two indicator lights of different colors; One indicator light is connected to the voltage detection module to display the current battery voltage status; the other indicator light is connected to the wireless transmission module to display the current network connection status.
4. The firing counter according to claim 2, characterized in that, The triaxial accelerometer uses the ADXL377 MEMS accelerometer chip with a range of ±200g.
5. The firing counter according to claim 2, characterized in that, The microprocessor selected is an STM32F103C8T6 microcontroller, which is used to identify firing events and record the exact time of firing based on information collected by the triaxial accelerometer.
6. The firing counter according to claim 2, characterized in that, The data storage module uses a W25Q16FLASH chip to store firing information.
7. The firing counter according to claim 2, characterized in that, The power conversion module uses the ME6217 low dropout LDO chip to convert the battery voltage into a stable, usable voltage.
8. The firing counter according to claim 2, characterized in that, The battery charging module uses the TP4056 battery management chip.
9. The firing counter according to claim 1, characterized in that, The wireless transmission module is an ESP8266 module with WIFI function; the wireless transmission module is connected to the gun firing counter module through 2×4 terminals with a spacing of 2.4mm; The gun firing counter module and the wireless transmission module are installed in a stacked manner; wherein the wireless transmission module is on top and the gun firing counter module is on the bottom.
10. The firing counter according to claim 1, characterized in that, The battery charging module is powered by an 850mAh 16340 lithium battery and is connected to the gun firing counter module via a GH1.25-2P terminal wire.