Abnormal alarm anti-static bracelet

Abstract

The invention relates to an abnormal alarm anti-static bracelet which comprises an annular bracelet watchband (100) and is characterized in that a watch box (200) is arranged on the annular bracelet watchband (100), and the two ends of the watch box (200) are connected with the two ends of the annular bracelet watchband (100); the bottom of the meter box (200) is provided with three through holes (202), one end of the meter box (200) is provided with a small hole (201), and the grounding cable (300) extends into the meter box (200) from the small hole (201); a circuit board and an integrated chip are arranged in the meter box (200), and the circuit board and the integrated chip adopt a modular design and comprise a power supply module (1), a resistance acquisition module (2), a voltage acquisition module (3), an integrated operation module (4), a precision adjustment module (5) and a sound-light alarm module (6); compared with the prior art, the anti-static protection time in production is prolonged by 90%, and the harm of ESD to personnel and products is greatly reduced.

Description

TECHNICAL FIELD

[0001] The application is an abnormal alarm anti-static bracelet, and relates to the application technical field of anti-static bracelet, the monitoring technical field and the static electricity safety field. BACKGROUND

[0002] In daily production and life, the generation of static electricity is inevitable, which can be applied in various environments and bring practical economic benefits, but some special links can cause irreversible harm. Human body is a natural static electricity source, in dry season, the generated and accumulated electric charge reaches a certain degree to form static electricity, and the instantaneous discharge voltage can reach several thousand volts or even several ten thousand volts. At this time, when the human body contacts zero potential objects or low potential objects, charge transfer occurs, that is, electrostatic discharge ESD. The harm caused by electrostatic discharge ESD is as follows: 1. causing the failure or malfunction of electronic equipment, causing electromagnetic interference; 2. breaking through integrated circuits and precision electronic components, or promoting component aging and reducing production yield; 3. high-voltage electrostatic discharge causing electric shock, endangering personal safety; 4. easily causing explosion and fire in production places with flammable and explosive materials or dust and oil mist.

[0003] The existing industrial prevention and elimination means for ESD hazards mainly include "human body static electricity discharge column", "anti-static bracelet", "anti-static door curtain" and the like. The principle and method of these devices are to effectively connect the human body to the ground through a conductor, and to discharge the electric charge accumulated by the human body to the ground by using the potential difference in a short time. However, the "human body static electricity discharge column" and "anti-static door curtain" have the characteristics of large size and special installation links, and are required to have high application scene. Therefore, in daily production and life, they are only installed in specific positions and cannot ensure that the human body static electricity is in a safe state at all times. The existing "anti-static bracelet" on the market needs special equipment to detect whether the wearing of the bracelet itself meets the safety requirements and whether the discharge circuit is effective, and has low flexibility and safety, cannot effectively monitor the discharge process in actual use, has insufficient real-time monitoring capability, and has certain safety hazards. SUMMARY

[0004] The application provides an abnormal alarm anti-static bracelet, which can reliably monitor the entire discharge process through a built-in real-time monitoring circuit.

[0005] The application relates to an abnormality alarm anti-static wristband, which comprises a ring-shaped wristband 100, characterized in that a watch box 200 is arranged on the ring-shaped wristband 100, the two ends of the watch box 200 are connected with the two ends of the ring-shaped wristband 100, three through holes 202 are arranged on the bottom of the watch box 200, a small hole 201 is arranged at one end of the watch box 200, a grounding cable 300 extends into the watch box 200 from the small hole 201, a circuit board + integrated chip is arranged in the watch box 200, the circuit board + integrated chip is designed in a modularization mode and comprises a power module 1, a resistance collection module 2, a voltage collection module 3, an integrated operation module 4, a precision adjustment module 5 and an audible and light alarm module 6, wherein the resistance collection module 2 and the voltage collection module 3 are connected with the integrated operation module 4 respectively, the integrated operation module 4 is connected with the power module 1, the precision adjustment module 5 and the audible and light alarm module 6 respectively, the audible and light alarm module 6 is connected with the power module 1, the resistance collection module 2 extends two wires respectively to form a resistance collection point A and a resistance collection point B, and the voltage collection module 3 extends two wires respectively to form a voltage collection point A and a voltage collection point B; wherein the resistance collection point A, the resistance collection point B and the voltage collection point A extend from the three through holes 202 on the bottom of the watch box 200 to the outside of the watch box 200, so that the resistance collection point A, the resistance collection point B and the voltage collection point A can contact the human body, and the voltage collection point B is connected with the grounding cable 300 extending into the watch box 200.

[0006] The resistance collection module and the voltage collection module form two signal collection channels which are isolated from each other, and after being processed by the integrated operation module, the two signal collection channels jointly realize signal support for the audible and light alarm module.

[0007] When working, the voltage signal processing logic judges whether the discharge process is distorted or not, and the resistance signal processing logic judges the size of the human body contact resistance; if the voltage signal processing logic judges that the discharge process is distorted or the resistance signal processing logic judges that the human body contact resistance is greater than 9 ohms, the audible and light alarm module 6 sends out audible and light alarms to remind the staff to connect the grounding cable 300 with the ground and rapidly discharge.

[0008] Advantages:

[0009] Compared with the prior art, the application has the advantages that the patent is designed based on analog electronic technology, has clear logic, fast logic operation processing speed, fast result response speed, simple structure, low maintenance cost, can realize real-time monitoring on the wearing condition of the staff, is high in safety, realizes isolated collection through the built-in isolation circuit, the internal operation processing circuit cannot cause secondary discharge to the staff and equipment, the anti-static protection time in production is increased by 90% than the prior art, the harm of electrostatic discharge ESD to the staff and products is greatly reduced, and the safety of the whole production process is technically supported to prevent safety production accidents caused by human body electrostatic discharge ESD. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 Figure 1 is a schematic diagram of the principle of the present application;

[0011] Figure 2 Figure 2 is a schematic diagram of the external structure of the present application;

[0012] Figure 3 Figure 3 is a logic flow diagram of the present application;

[0013] Figure 4 Figure 4 is a main circuit diagram of the present application. DETAILED DESCRIPTION

[0014] The present application proposes an abnormal alarm anti-static wristband based on analog circuit technology with a modular design, high detection efficiency, high automation degree and fast response result.

[0015] The abnormal alarm anti-static wristband based on analog circuit technology adopts a modular design and is composed of pure hardware logic, and contains the following functional modules: an internal power module 1, a resistance collection module 2, a voltage collection module 3, an integrated operation module 4, a precision adjustment module 5, an audible and light alarm module 6 and a connecting cable. The functional modules are integrated into a special packaging shell to realize the use function.

[0016] The internal power module 1 is the power module of the abnormal alarm anti-static wristband and is the prerequisite for the normal operation of each module, and supplies power to each module through the built-in lithium battery.

[0017] The resistance collection module 2 is one of the collection modules of the abnormal alarm anti-static wristband. The module monitors the contact resistance in real time through the external collection point and transmits the collected signal to the integrated operation module.

[0018] The voltage collection module 3 is the second collection module of the abnormal alarm anti-static wristband. Since the human body discharge is a continuous discharge process, the module monitors the voltage drop of the human body segment and the ground segment on the entire discharge circuit in real time through the external collection point and transmits the collected signal to the integrated operation module.

[0019] The integrated operation module 4 is the core module of the abnormal alarm anti-static wristband. The module realizes the operation processing function by the main control integrated operational amplifier chip and the peripheral circuit, thereby judging the abnormal condition of the discharge circuit and issuing the appropriate instruction to the audible and light alarm module.

[0020] The precision adjustment module 5 is the main adjustment module of the abnormal alarm anti-static wristband. The module adjusts the operation processing precision through the adjustment circuit according to the different requirements of different scenes for the static electricity.

[0021] Acousto-optic alarm module 6: is the use of personnel intuitive view of the human body static situation of the interactive module. For integrated operational amplifier module issued instructions, make red light, green light, buzzer alarm and alarm functions.

[0022] The overall shape is an annular watch structure, and a high-impedance composite material shell is used to wrap the internal circuit to form an anti-static bracelet main body. The main body has two table belt hole positions on the two sides, and an adjustable annular watch band is surrounded by a composite elastic material.

[0023] The inside of the anti-static bracelet is provided with a metal contact surface in effective contact with the human skin, and the outside of the anti-static bracelet is provided with a reserved lead wire in effective connection with the ground, so as to complete the discharge circuit from the human body to the bracelet to the ground. The first protection of the abnormal anti-static bracelet wearing condition monitoring is realized through the resistance collection point. The integrated operation module operates and processes the collected resistance signal, realizes three states of short circuit, open circuit and passage, and reflects three wearing conditions of abnormal short connection, normal connection to the human body and suspension. The second protection of the abnormal alarm anti-static bracelet wearing condition monitoring is realized through the voltage collection point. The integrated operation module operates and processes the collected voltage drop signal on the entire discharge circuit, realizes two states of steady state and jitter, and reflects two working states of the continuous and stable discharge of the correct wearing abnormal alarm anti-static bracelet and the abnormal discharge of the abnormal alarm anti-static bracelet.

[0024] Two parallel operation processing logic circuits, together realizing fifteen two-by-two permutation combinations of five working states of the abnormal alarm static bracelet, through the acousto-optic alarm module of man-machine interaction, when the discharge circuit composed of the earth, the abnormal alarm anti-static bracelet and the human body is in any abnormal condition, the alarm is immediately sent out. When the static bracelet alarms, the internal discharge circuit is not completely disconnected, and the basic discharge work can still be ensured, so as to remind the personnel to check the static bracelet wearing condition in time under the premise of ensuring safety.

[0025] In order to further illustrate the specific implementation details of the patent, the technical scheme of the patent will be discussed in detail below in combination with the drawings.

[0026] As Figure 1As shown, the introduction is the system principle diagram of the abnormal alarm anti-static bracelet, and the working relationship of the built-in various function modules is briefly described. The built-in power module outputs 3.7V to 9V DC to provide the energy required for the whole bracelet to work. The resistance acquisition module acquires the contact resistance between the abnormal anti-static bracelet and the human skin through resistance acquisition point A and resistance acquisition point B, and transmits the real-time acquired resistance signal to the integrated operation processing module. The voltage acquisition module acquires the natural working voltage drop between the human body end and the ground discharge end on the discharge circuit through voltage acquisition point A and voltage acquisition point B, and transmits the real-time acquired voltage signal to the integrated operation processing module. Since the resistance signal and the voltage signal are two signals working in parallel and synchronously through logic hardware. After the two signals are synchronously transmitted to the integrated operation processing module, the integrated operation processing module realizes the processing of the signals. The processing precision of the integrated operation module is determined by the precision adjusting module. The result processed by the integrated operation processing module is output in the form of two digital signals, which is transmitted to the sound and light alarm module. The sound and light alarm module makes two kinds of man-machine interaction signals of safety and alarm according to the two digital signals sent by the integrated operation processing module.

[0027] As Figure 2 shown, the introduction is the shape structure of the abnormal alarm anti-static bracelet of the patent, which is in the form of a bracelet. The contact between the abnormal anti-static bracelet and the human wrist is adjusted by the wrist strap. All the built-in modules are integrated in the bracelet package, and signal acquisition is realized through external acquisition points; isolation operation processing is realized through built-in isolation circuit; man-machine interaction indicator light and buzzer are set on the bracelet appearance to realize man-machine interaction of abnormal information; power switch is set on the bracelet outer ring to realize the switching between on and off states of the bracelet. Finally, the overall function is realized. It can meet the needs of different body types, different application scenarios and different task requirements.

[0028] As Figure 3As shown, the introduction is the logic flow chart of the abnormal alarm anti-static wristband of the patent. When the abnormal alarm anti-static wristband is in the working state, two-way acquisition modules begin to continuously and stably acquire signals, internal logic circuits begin to monitor, and two-way processing logics belong to parallel relationship. First, the resistance processing logic of one way is explained. The contact resistance signal is acquired at both ends of the resistance acquisition point. The functional module performs the first logic selection. It is judged whether the contact resistance is greater than 9MΩ. When the logic operation result is YES, it is determined that the abnormal alarm anti-static wristband is not worn or the wristband is loose, causing functional abnormal failure. The alarm work buzzer alarm and red light flashing are executed. When the logic operation result is NO, the second logic selection is performed. It is judged whether the contact resistance is less than 800Ω. When the logic operation result is YES, it is determined that the abnormal alarm anti-static wristband is abnormally short-circuited, causing functional abnormal failure. The alarm work buzzer alarm and red light flashing are executed. When the logic operation result is NO, the final logic selection is entered. At the same time, the voltage processing logic of the other way is explained. The discharge voltage drop signal is acquired at both ends of the voltage acquisition point. The functional module performs the logic selection. It is judged whether the discharge voltage signal is distorted. When the logic operation result is YES, it is determined that one or both of the human body end and the ground end are abnormally loose, causing the abnormal alarm anti-static wristband to be abnormally failed. The alarm work buzzer alarm and red light flashing are executed. When the logic operation result is NO, it is determined that the voltage drop on the discharge circuit is stable and effective. The abnormal alarm anti-static wristband works normally. The final logic selection is entered. It is judged whether the voltage resistance is qualified. When the logic operation result is YES, the green light is lit.

[0029] As Figure 4 shown, the introduction is the partial main circuit diagram of the abnormal alarm anti-static wristband of the patent. Around the integrated operation chip, resistors, capacitors, diodes and other components are used for topology to realize various functions.

[0030] The application discloses an abnormal alarm anti-static wristband based on analog circuit technology. The abnormal alarm anti-static wristband adopts modular design and performs reliability monitoring on the entire discharge process through a built-in real-time monitoring circuit. The abnormal alarm anti-static wristband solves the problem that special equipment is needed to detect the human body static situation alone under the existing working condition, and the real-time monitoring capability is insufficient. The abnormal alarm anti-static wristband of the patent improves the anti-static protection time in production by 90% compared with the prior art, greatly reduces the harm of electrostatic discharge (ESD) to personnel and products, provides technical support for the safety of the entire production process, and prevents safety production accidents caused by human body electrostatic discharge (ESD). The abnormal alarm anti-static wristband has the characteristics of clear logic, strong monitoring and detection capability, simple structure, low maintenance cost, real-time monitoring on the wearing condition of the user, and the like, and has a wide application market and promotion prospect in the anti-static wristband application technical field, the monitoring technical field and the electrostatic safety field.

[0031] An abnormality alarm anti-static wristband based on analog circuit technology, which adopts modular design in functional design idea and comprises a built-in power module 1, a resistance collection module 2, a voltage collection module 3, an integrated operation module 4, a precision adjustment module 5, an audible and light alarm module 6 and a connecting cable.

[0032] The whole shape of the present application adopts a ring-shaped watch structure, and each module is integrated inside, and the cable is directly connected to the ground, so that different body types of personnel can be used, different application scenarios can be met, and different task requirements can be met.

[0033] The resistance collection module and the voltage collection module jointly constitute two signal collection channels, are mutually isolated, are processed through the integrated operation module, and jointly realize signal support to the audible and light alarm module.

[0034] The present application has working processing logic. The voltage signal processing logic judges whether the discharge process is distorted or not, and the resistance signal processing logic judges the size of the human body contact resistance. The two signals are highly restricted by the hardware circuit, and the restriction is that if any one of the signals is found to be abnormal, the audible and light alarm can be triggered, and the logic is clear.

Claims

1. Abnormal alarm anti-static bracelet, comprising a ring-shaped bracelet watchband (100), characterized in that, The watch box (200) is provided with three through holes (202) at the bottom, and a small hole (201) at one end, and a grounding cable (300) extends into the watch box (200) from the small hole (201); a circuit board + integrated chip is arranged in the watch box (200), the circuit board + integrated chip is designed in a modular manner, and contains a power module (1), a resistance collection module (2), a voltage collection module (3), an integrated operation module (4), a precision adjustment module (5) and an audible and light alarm module (6), wherein the resistance collection module (2) and the voltage collection module (3) are connected with the integrated operation module (4) respectively, the integrated operation module (4) is connected with the power module (1), the precision adjustment module (5) and the audible and light alarm module (6) respectively, the audible and light alarm module (6) is connected with the power module (1), the resistance collection module (2) extends two wires respectively to form a resistance collection point A and a resistance collection point B, and the voltage collection module (3) extends two wires respectively to form a voltage collection point A and a voltage collection point B; wherein the resistance collection point A, the resistance collection point B and the voltage collection point A extend from the three through holes (202) at the bottom of the watch box (200) to the outside of the watch box (200), so that the resistance collection point A, the resistance collection point B and the voltage collection point A can contact the human body, and the voltage collection point B is connected with the grounding cable (300) extending into the watch box (200). The resistance collection module and the voltage collection module form two signal collection channels, which are isolated from each other, and after being processed by the integrated operation module, the two signal collection channels jointly realize signal support for the audible and light alarm module.

2. The abnormal alarm anti-static bracelet according to claim 1, characterized in that: When working, the voltage signal processing logic judges whether the discharge process is distorted, and the resistance signal processing logic judges the size of the human body contact resistance; 3. The abnormal alarm anti-static bracelet according to claim 2, characterized in that: If the voltage signal processing logic judges that the discharge process is distorted or the resistance signal processing logic judges that the human body contact resistance is greater than 9Ω, the audible and light alarm module (6) triggers audible and light alarm to remind the staff to connect the grounding cable (300) to the ground and discharge quickly. ​

Images