Repeated weighing alarm system

Abstract

The embodiment of the utility model discloses a repeated weighing alarm system which comprises a single chip microcomputer, a quick response voltage stabilizer module, an adapter circuit module, a triode driving circuit module, a quartz crystal oscillator circuit module, an RFID radio frequency circuit module, an RFID tag and an alarm circuit module. The output end is connected with the input end of the quick response voltage stabilizer module; the output end of the quick response voltage stabilizer module is connected with the single-chip microcomputer. The triode driving circuit module comprises a triode U4 and a resistor R3, a base electrode of the triode U4 is connected with one end of the resistor R3, and the other end of the resistor R3 is connected with a PB4 pin of the single chip microcomputer; the quartz crystal oscillator circuit module is connected with the single-chip microcomputer. The RFID radio frequency circuit module is connected with the single-chip microcomputer, and the RFID tag is installed on a trolley for goods to be weighed. The alarm circuit module is connected with the single-chip microcomputer.

Description

Technical Field

[0001] The present application relates to the technical field of weighing equipment, and in particular to a repeated weighing alarm system. Background Art

[0002] The existing weighing equipment in tobacco storage warehouses is mostly small floor scales, which are used to weigh the purchased tobacco leaves. However, the existing weighing equipment cannot identify whether the goods are weighed repeatedly, which can easily cause confusion in the management of tobacco leaf purchases. Summary of the invention

[0003] The purpose of the present application is to provide a duplicate weighing alarm system to solve the problem that the weighing equipment in the prior art cannot identify whether the goods are weighed repeatedly, which easily causes confusion in the management of tobacco leaf purchases.

[0004] To achieve the above-mentioned purpose, the embodiment of the present application provides a repeated weighing alarm system, including: a single-chip microcomputer, a fast response voltage regulator module, an adapter circuit module, a transistor drive circuit module, a quartz crystal oscillator circuit module, an RFID radio frequency circuit module, an RFID tag, and an alarm circuit module, wherein:

[0005] The input end of the adapter circuit module is connected to the mains, and the output end is connected to the input end of the fast response regulator module;

[0006] The output end of the fast response voltage regulator module is connected to the single chip microcomputer;

[0007] The transistor drive circuit module includes a transistor U4 and a resistor R3, wherein the base of the transistor U4 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the PB4 pin of the single chip microcomputer;

[0008] The quartz crystal oscillator circuit module is connected to the single chip microcomputer;

[0009] The RFID radio frequency circuit module is connected to the single chip microcomputer, and the RFID tag is installed on the goods to be weighed;

[0010] The alarm circuit module is connected to the single chip microcomputer.

[0011] Optionally, it also includes:

[0012] A filter capacitor module is connected between an input voltage terminal and an output voltage terminal of the fast response regulator module.

[0013] Optionally, the adapter circuit module includes a fuse F1, a resistor U3, and a diode D1. One end of the fuse F1 is connected to the positive pole of the AC power, and the other end is respectively connected to the positive pole of the diode D1 and one end of the resistor U3. The cathode of the diode D1 is connected to the input end of the fast response regulator module, and the other end of the resistor U3 is connected to the negative pole of the AC power.

[0014] Optionally, the quartz crystal oscillator circuit module is connected to the PF0-OSC_IN pin and the PF1-OSC_OUT pin of the single chip microcomputer.

[0015] Optionally, the RFID radio frequency circuit module is connected to the PA9 pin and the PA10 pin of the single chip microcomputer.

[0016] The embodiments of the present application have the following advantages:

[0017] The embodiment of the present application provides a repeated weighing alarm system, including: a single-chip microcomputer, a fast-response voltage regulator module, an adapter circuit module, a transistor drive circuit module, a quartz crystal oscillator circuit module, an RFID radio frequency circuit module, an RFID tag, and an alarm circuit module, wherein the input end of the adapter circuit module is connected to the mains, and the output end is connected to the input end of the fast-response voltage regulator module; the output end of the fast-response voltage regulator module is connected to the single-chip microcomputer; the transistor drive circuit module includes a transistor U4 and a resistor R3, the base of the transistor U4 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the PB4 pin of the single-chip microcomputer; the quartz crystal oscillator circuit module is connected to the single-chip microcomputer; the RFID radio frequency circuit module is connected to the single-chip microcomputer, and the RFID tag is installed on the goods to be weighed; the alarm circuit module is connected to the single-chip microcomputer.

[0018] Compared with the prior art, the duplicate weighing alarm system provided by the above technical solution uses an RFID radio frequency circuit module to identify the RFID tag installed on the goods to be weighed, thereby determining whether the goods have been weighed repeatedly, so as to solve the problem that the weighing equipment in the prior art cannot identify whether the goods have been weighed repeatedly, which easily causes confusion in the management of goods in and out of the warehouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] Figure 1A schematic diagram of single-chip microcomputer wiring for a repeated weighing alarm system provided by at least one embodiment of the present application;

[0021] Figure 2 A circuit schematic diagram of an adapter circuit module of a repeated weighing alarm system provided by at least one embodiment of the present application;

[0022] Figure 3 A schematic circuit diagram of a fast response voltage regulator module for a repeated weighing alarm system provided by at least one embodiment of the present application;

[0023] Figure 4 A circuit schematic diagram of a filter capacitor module of a repeated weighing alarm system provided by at least one embodiment of the present application;

[0024] Figure 5 A circuit schematic diagram of a transistor drive circuit module of a repeated weighing alarm system provided by at least one embodiment of the present application;

[0025] Figure 6 A circuit schematic diagram of a quartz crystal oscillator module of a repeated weighing alarm system provided by at least one embodiment of the present application;

[0026] Figure 7 A schematic circuit diagram of an RFID radio frequency module of a repeated weighing alarm system provided in at least one embodiment of the present application. DETAILED DESCRIPTION

[0027] The following is a description of the implementation of the present application by specific specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "set", "install", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0030] The present application embodiment provides a repeated weighing alarm system, referring to Figures 1 to 7 ,include:

[0031] Single chip microcomputer, fast response voltage regulator module, adapter circuit module, transistor drive circuit module, quartz crystal oscillator circuit module, RFID radio frequency circuit module, RFID tag, alarm circuit module, among which,

[0032] The input end of the adapter circuit module is connected to the mains, and the output end is connected to the input end of the fast response regulator module;

[0033] The output end of the fast response voltage regulator module is connected to the single chip microcomputer;

[0034] The transistor drive circuit module includes a transistor U4 and a resistor R3, wherein the base of the transistor U4 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the PB4 pin of the single chip microcomputer;

[0035] The quartz crystal oscillator circuit module is connected to the single chip microcomputer;

[0036] The RFID radio frequency circuit module is connected to the single chip microcomputer, and the RFID tag is installed on the goods to be weighed;

[0037] The alarm circuit module is connected to the single chip microcomputer.

[0038] Specifically, the adapter circuit module is used to convert the 220v voltage into a 5v voltage. Such a design can not only effectively stabilize the voltage, but also protect it through the fuse F1 when the voltage is abnormal. The fast response voltage regulator module inputs a 5V voltage and outputs a 3V voltage. Its function is to further stabilize the voltage output by the adapter circuit module and output it to the single-chip microcomputer. In order to ensure the stability of the voltage, in some embodiments, a filter capacitor module is also connected between the input voltage end and the output voltage end of the fast response voltage regulator module to filter out the clutter in the voltage. The transistor drive circuit module is mainly used to drive other modules or actuators (such as an alarm circuit module). The quartz crystal oscillator circuit module is the time base of the system. It connects the PF0-OSC_IN pin and the PF1-OSC_OUT pin of the single-chip microcomputer to provide a stable clock signal for the single-chip microcomputer. The RFID radio frequency circuit module is an important communication module of the system. It connects the PA9 pin and the PA10 pin of the single-chip microcomputer to realize wireless communication with the RFID tag. Through the RFID radio frequency circuit module, the system can read the information in the RFID tag for subsequent processing and judgment. The alarm circuit module is connected to the single-chip microcomputer. When the system detects an abnormal situation (such as repeated weighing), the single-chip microcomputer will control the alarm circuit module to send out an audible and visual alarm to alert the operator.

[0039] In some embodiments, the RFID tag is mounted on the cigarette rack cart.

[0040] In some embodiments, when a cigarette frame cart with the same RFID tag is repeatedly identified by the RFID radio frequency circuit module within a preset time (for example, three minutes), an alarm is issued through the alarm circuit module. The alarm method can be a voice alarm, for example, a voice message: "Repeat weighing, repeat weighing".

[0041] Specifically, first, the alarm system is equipped with an RFID radio frequency circuit module, which has a strong recognition capability and can accurately identify objects with RFID tags. In this scenario, the module is mainly used to identify the cigarette frame trolley with RFID tags.

[0042] When the cigarette rack cart passes through the identification area of ​​the RFID radio frequency circuit module, the module will quickly read the RFID tag information on the cart and compare it with the information stored in the system. If the identified cart has the same RFID tag as the one stored in the system, the system will start timing.

[0043] Next, the system will enter a preset time window, such as three minutes. During this time window, if the RFID radio frequency circuit module recognizes the cigarette frame trolley with the same RFID tag again, the system will determine it as a repeated weighing event.

[0044] Once a repeated weighing event is determined, the alarm circuit module will be activated immediately. There are many different alarm methods, one of the most common methods is voice alarm. The system will issue clear and easy-to-understand voice prompts through the built-in voice synthesizer or the connected external voice device, such as: "Repeated weighing, repeated weighing". This voice alarm method can intuitively notify operators or related personnel to remind them to pay attention to and deal with the problem of repeated weighing.

[0045] In addition to voice alarm, the system can also use other alarm methods, such as sound and light alarm, vibration alarm, etc., to adapt to different scenarios and needs. At the same time, the system can also record relevant information of repeated weighing events, such as time, location, trolley number, etc., for subsequent query and analysis.

[0046] In general, this duplicate weighing alarm system realizes rapid identification and timely alarm of duplicate weighing events by combining RFID radio frequency circuit module and alarm circuit module, effectively improving the accuracy and efficiency of the logistics process.

[0047] In some embodiments, it further includes: a filter capacitor module, wherein the filter capacitor module is connected between the input voltage terminal and the output voltage terminal of the fast response regulator module.

[0048] In some embodiments, the adapter circuit module includes a fuse F1, a resistor U3, and a diode D1. One end of the fuse F1 is connected to the positive pole of the AC power, and the other end is respectively connected to the positive pole of the diode D1 and one end of the resistor U3. The cathode of the diode D1 is connected to the input end of the fast response regulator module, and the other end of the resistor U3 is connected to the cathode of the AC power.

[0049] In some embodiments, the alarm circuit module includes a buzzer, a relay, a resistor, and a diode, wherein the buzzer is used to sound an alarm, the relay is used to control the on and off of the buzzer, and the resistor and the diode play a role in current limiting and protection. The positive pole of the buzzer is connected to a normally open contact of the relay (usually marked as NO), and the negative pole is connected to the common ground terminal of the circuit. One end of the coil of the relay is connected to a control pin of the microcontroller (such as PB4, depending on the model and programming of the microcontroller), and the other end is connected to the common ground terminal of the circuit. In this way, when the microcontroller needs to trigger an alarm, it can output a signal through the pin to energize the relay coil, thereby closing the normally open contact and making the buzzer energized and sounding. The resistor is connected in series between the relay coil and the microcontroller control pin to limit the current flowing through the relay coil to prevent excessive current from damaging the microcontroller or relay. The diode is connected in parallel at both ends of the relay coil, with the positive pole connected to one end of the relay coil and the negative pole connected to the other end. In this way, when the relay coil is de-energized, a reverse voltage will be generated at both ends of the coil due to the self-inductance electromotive force of the coil. The diode can provide a path to discharge this reverse voltage and protect the microcontroller and other circuit components from damage.

[0050] In some embodiments, the quartz crystal oscillator circuit module is connected to the PF0-OSC_IN pin and the PF1-OSC_OUT pin of the single chip microcomputer.

[0051] Specifically, the quartz crystal oscillator circuit module is also connected to capacitors C12 and C13.

[0052] In some embodiments, the RFID radio frequency circuit module is connected to the PA9 pin and the PA10 pin of the single chip microcomputer.

[0053] In some embodiments, the BOOT0 pin of the microcontroller is a pin on the STM32 chip. The level state of the BOOT0 pin and the BOOT1 pin when the chip is reset determines which area the program starts to execute from after the chip is reset. BOOT0=0 means booting from the user flash memory, which is the normal working mode. BOOT0=1 means booting from the system memory. The program function started in this mode is set by the manufacturer. The only function of the BOOT0 pin is to set the boot mode.

[0054] In some embodiments, J1 of the microcontroller is the interface terminal and J2 is the download program terminal. PA13\PA14\PA15\PB3\PB4 are used as SWD and JTAG debugging interfaces and for burning codes.

[0055] In summary, compared with the prior art, the repeated weighing alarm system provided by the technical solution of the above embodiment uses an RFID radio frequency circuit module to identify the RFID tag installed on the goods to be weighed, thereby determining whether the goods are weighed repeatedly, so as to solve the problem that the weighing equipment in the prior art cannot identify whether the goods are weighed repeatedly, which easily causes confusion in the management of goods in and out of the warehouse.

[0056] Note that, unless otherwise directly stated, all features disclosed in this specification (including any attached claims, abstracts and drawings) may be replaced by alternative features for achieving the same, equivalent or similar purposes. Therefore, unless otherwise explicitly stated, each feature disclosed is only an example of a group of equivalent or similar features. Where used, further, preferably, further and more preferably are simple beginnings for elaborating another embodiment based on the aforementioned embodiment, and the content of the further, preferably, further or more preferably followed by the combination with the aforementioned embodiment constitutes a complete construction of another embodiment. Several further, preferably, further or more preferably settings following the same embodiment can be arbitrarily combined to form another embodiment.

[0057] In the implementation of functions and steps, the corresponding functions and steps in various embodiments may also occur in a different order than shown. For example, two consecutive functions and steps may actually be performed or implemented substantially in parallel, and they may sometimes be performed or implemented in the opposite order, depending on the functions involved.

[0058] Although the present application has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements may be made to the present application. Therefore, these modifications or improvements made without departing from the spirit of the present application all fall within the scope of protection claimed in the present application.

Claims

1. A repeated weighing alarm system, characterized in that: include: Single chip microcomputer, fast response voltage regulator module, adapter circuit module, transistor drive circuit module, quartz crystal oscillator circuit module, RFID radio frequency circuit module, RFID tag, alarm circuit module, among which, The input end of the adapter circuit module is connected to the mains, and the output end is connected to the input end of the fast response regulator module; The output end of the fast response voltage regulator module is connected to the single chip microcomputer; The transistor drive circuit module includes a transistor U4 and a resistor R3, wherein the base of the transistor U4 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the PB4 pin of the single chip microcomputer; The quartz crystal oscillator circuit module is connected to the single chip microcomputer; The RFID radio frequency circuit module is connected to the single chip microcomputer, and the RFID tag is installed on the cargo cart to be weighed; The alarm circuit module is connected to the single chip microcomputer.

2. The repeated weighing alarm system according to claim 1, characterized in that: Also includes: A filter capacitor module is connected between an input voltage terminal and an output voltage terminal of the fast response regulator module.

3. The repeated weighing alarm system according to claim 1, characterized in that: The adapter circuit module includes a fuse F1, a resistor U3, and a diode D1. One end of the fuse F1 is connected to the positive electrode of the mains, and the other end is respectively connected to the positive electrode of the diode D1 and one end of the resistor U3. The cathode of the diode D1 is connected to the input end of the fast response regulator module, and the other end of the resistor U3 is connected to the cathode of the mains.

4. The repeated weighing alarm system according to claim 1, characterized in that: The quartz crystal oscillator circuit module is connected to the PF0-OSC_IN pin and the PF1-OSC_OUT pin of the single chip microcomputer.

5. The repeated weighing alarm system according to claim 1, characterized in that: The RFID radio frequency circuit module is connected to the PA9 pin and the PA10 pin of the single chip microcomputer.

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