CN118483474A - Wearable human body electrostatic voltage and resistance testing system - Google Patents
Wearable human body electrostatic voltage and resistance testing system Download PDFInfo
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- CN118483474A CN118483474A CN202410554796.9A CN202410554796A CN118483474A CN 118483474 A CN118483474 A CN 118483474A CN 202410554796 A CN202410554796 A CN 202410554796A CN 118483474 A CN118483474 A CN 118483474A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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Abstract
本发明涉及人体电压、系统电阻检测技术领域，具体为一种可穿戴式人体静电电压与电阻的测试系统。当操作人员佩戴好系统后，若系统没有连接电源适配器时，系统自动打开人体静电电压检测系统，关闭测阻判断电路，利用电压检测系统可获知人体静电电压值。当系统连接到电源适配器时，打开系统电阻测试电路(系统可以关闭也可以继续打开人体静电电压检测系统)，通过电阻测试电路可获知人体系统电阻。通过对人体静电电压、系统电阻的测试和分析，可以全面了解人员通过腕带系统或地板—鞋束系统接地的情况。若人体电压或系统电阻异常，可报警，进而形成一整套测试系统，实现人体电压、系统电阻的实时、持续、有效的检测。
The present invention relates to the technical field of human body voltage and system resistance detection, and specifically to a wearable human body electrostatic voltage and resistance testing system. After the operator wears the system, if the system is not connected to a power adapter, the system automatically turns on the human body electrostatic voltage detection system, turns off the resistance measurement judgment circuit, and uses the voltage detection system to obtain the human body electrostatic voltage value. When the system is connected to the power adapter, the system resistance test circuit is turned on (the system can turn off or continue to turn on the human body electrostatic voltage detection system), and the human body system resistance can be obtained through the resistance test circuit. By testing and analyzing the human body electrostatic voltage and system resistance, the situation of the person being grounded through the wristband system or the floor-shoe harness system can be fully understood. If the human body voltage or system resistance is abnormal, an alarm can be issued, thereby forming a complete set of test systems to achieve real-time, continuous and effective detection of human body voltage and system resistance.
Description
Technical Field
The invention relates to the technical field of human body voltage and electrostatic resistance detection, in particular to a wearable human body electrostatic voltage and resistance testing system.
Background
In order to prevent static damage of static sensitive products, people in the international standard and national standard require to enter and exit the static-proof working area to conduct human body grounding by adopting a wrist strap system and a floor-shoe beam system. When the wristband system is grounded, the resistance value of the human body system needs to be ensured to be smaller than 35MΩ, and particularly in an electric installation area, an operator needs to wear the wristband continuous monitor to monitor that the resistance value of the human body system is smaller than 35MΩ as well as the anti-static wristband. When the floor-toe system is used for grounding, the electrostatic voltage of the human body is required to be less than 100V.
The following patents are disclosed in the Chinese patent library after retrieval:
CN200920040364.7 (antistatic wrist band monitor) for monitoring the electrostatic potential of the wrist band end to determine the operation state of the wrist band. Because the electrostatic potential at the wrist strap end is little influenced by external factors, the operation is more stable, false alarm is not easy to happen, and the performance is reliable. The comparator is adopted, so that only the comparison between the measured voltage and the set value can be obtained, and the specific numerical value of the human body voltage can not be obtained.
CN201081767Y (an antistatic bracelet real-time monitor) which judges whether the working state of the bracelet is normal or not by testing an external resistor. The human body resistance is different due to the fact that the individuals are fat and thin; the contact resistance also changes due to the change in the operation posture of the operator.
CN206348399U (dual-loop wrist strap monitor), which also compares with a reference value, and outputs an abnormality signal when the electrostatic potential at the wrist strap end deviates from the reference value.
However, although the above patent discloses a device for detecting the electrostatic voltage and the resistance of the human body, a device for detecting the electrostatic voltage and the resistance effectively and continuously in real time is not realized at the same time at present due to technical limitations.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a wearable human body electrostatic voltage and resistance testing system, which solves the problems.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
a wearable human body electrostatic voltage and resistance testing system, comprising:
The outer frame structure for contacting with the detected object/human body comprises a lower shielding metal sheet which can directly contact with the detected object/human body to obtain the voltage of the detected object/human body so that the voltage is in the same voltage as the voltage of the detected object/human body;
The two conducting plates are not communicated with each other, one end of one conducting plate is in contact with an object/human body to be tested, and the other end of the conducting plate is connected with a ground wire on a charging jack of the power circuit; one end of the other conducting strip is contacted with the tested object/human body, and the other end of the other conducting strip is connected with a resistance test processing circuit;
the test probe is arranged inside the outer frame structure and is used for testing the electrostatic voltage of the lower shielding metal sheet and converting the electrostatic voltage from direct current to alternating current or other electrical signals;
The test system comprises a voltage detection system, a resistance measurement judging circuit and a system resistance test circuit;
The voltage detection system obtains alternating current or electric signals released by the test probe, converts the alternating current or other electric signals into analog signals, obtains and marks out voltage values of the alternating current or electric signals through analysis of the analog signals, and uploads the voltage values to the upper computer or the display screen;
the resistance measurement judging circuit can judge whether the system is connected to the charging power supply or not, and further judge whether the human body is well grounded or not.
The system resistance test circuit is used for detecting the resistance of the human body system, weak voltage or current signals are applied to the human body through the resistance test processing circuit, corresponding current or voltage signals are measured, the resistance of the human body system is obtained and marked after analysis and processing, and the value of the system resistance is uploaded to the upper computer or the display screen;
Preferably, the electrostatic voltage detection system includes:
The information processing circuit is electrically connected with the test probe and is used for processing the voltage or the electric signal detected in the test probe into an analog signal which can be acquired by the data acquisition circuit;
The first data acquisition circuit is electrically connected with the signal processing circuit and is used for converting the analog signals in the information processing circuit into digital signals;
The central processing unit is electrically connected with the data acquisition circuit and used for obtaining and marking the value of the alternating current voltage or the electric signal, processing and analyzing the digital signal, uploading the digital signal to an upper computer through a data communication module or directly displaying the digital signal on a display screen, and alarming if the electrostatic voltage of the human body is abnormal;
The data communication module is electrically connected with the central processing unit and is used for uploading the digital signal of the voltage to an upper computer or directly displaying the digital signal on a display screen, and when the data is abnormal, a data abnormal instruction can be transmitted;
And the probe control circuit is electrically connected with the central processing unit and the test probe and is used for driving and controlling the rotation or vibration of the test probe, so that the running parameters of the test probe can be known and used for data correction.
Preferably, the resistance measurement judging circuit includes:
And the resistance measurement judging circuit is connected with the power supply positive end and the power supply grounding end of the power supply circuit charging jack, and can judge whether the system is connected to a charging power supply or not, so as to judge whether the human body is well grounded or not.
Preferably, the system resistance test circuit includes:
The resistance test processing circuit is used for applying weak voltage or current signals to a human body, measuring corresponding current or voltage signals and analyzing the corresponding current or voltage signals into analog signals which can be acquired by the data acquisition circuit II;
The central processing unit is electrically connected with the second data acquisition circuit and used for obtaining and calibrating the resistance value of the human body system, processing and analyzing the digital signal, uploading the digital signal to the upper computer through the data communication module or directly displaying the digital signal on the display screen, and alarming if the resistance of the human body system is abnormal;
The data communication module is electrically connected with the central processing unit and is used for uploading the resistance value of the human body system to the upper computer or directly displaying the resistance value on the display screen, and when the data is abnormal, the data abnormal instruction can be transmitted;
preferably, the outer frame structure includes:
an upper shield metal sheet disposed on an upper side of the lower shield metal sheet;
The insulating support is arranged between the upper shielding metal sheet and the lower shielding metal sheet, and forms a sealing framework with the lower shielding metal sheet and the upper shielding metal sheet, a cavity is formed in the sealing framework, and the test probe is arranged in the cavity.
Preferably, the wristband comprises two conductive sheets which are not connected with each other inside:
Two conductive sheets which are not communicated with each other, wherein one end of one conductive sheet is contacted with an object/human body to be tested, and the other end of the conductive sheet is connected with a ground wire on a charging jack of a power circuit; one end of the other conducting strip is contacted with the tested object/human body, and the other end of the other conducting strip is connected with a resistance test processing circuit;
Preferably, the test probe is contact type and non-contact type.
Preferably, the power supply circuit further comprises a charging jack, and the charging jack is a 2P magnetic interface or a 4P magnetic interface.
Preferably, the data communication module is a wired or wireless communication module.
The invention provides a wearable human body electrostatic voltage and resistance testing system, which has the following beneficial effects:
1. In the invention, the outer frame structure is arranged to be in direct contact with the tested object/human body, if the tested object/human body is electrified, the lower shielding metal sheet is also provided with the same voltage, the test probe converts the voltage into alternating current or other electric signals, the alternating current or other electric signals are processed into analog signals which can be collected by the data collecting circuit through the signal processing circuit, the data collecting circuit is controlled by the central processing unit to convert the analog signals of the signal processing circuit into digital signals, the digital signals are processed and analyzed, and the digital signals can be uploaded to an upper computer through the data communication module or are directly displayed on a display screen, if the human body voltage is abnormal, the alarm can be given, and a set of static voltage test system is further formed, so that the real-time detection of the tested object/human body voltage is realized, and the real-time, continuous and effective detection of the human body static voltage can be realized.
2. According to the invention, the positive power end and the power ground end of the power supply circuit charging jack are connected, so that whether the system is connected to the charging power supply or not can be judged, whether the human body is well grounded or not can be judged, and whether the system resistance can be tested or not can be judged.
3. In the invention, the system resistance is converted into a digital signal by the second data acquisition circuit through the two conducting strips which are contacted with the tested object/human body and connected with the resistance test processing circuit, the digital signal is processed and analyzed by the central processing unit, and then the digital signal can be uploaded to the upper computer through the data communication module or directly displayed on the display screen, and if the system resistance of the human body is abnormal, the alarm can be given. And a set of resistance test system is formed, so that the real-time detection of the system resistance is realized, and the human body system resistance can be continuously and effectively detected in real time.
4. In the invention, a resistance measuring judging circuit judges whether the resistance of the human body system can be tested. The human body electrostatic voltage detection system can work simultaneously with the system resistance test circuit or can work independently.
5. According to the invention, the system can realize human body wearing, and can monitor the electrostatic voltage and the system resistance on the human body in real time.
6. Compared with the prior art, the volume and the weight of the static voltmeter can be greatly reduced through the arranged test system, and the static voltmeter is convenient for a user to carry;
7. In the invention, the human body can charge when wearing and sitting; when the human body is not worn, the battery can be placed in a special charging box for charging.
8. In the invention, the charging wire is a 2P magnetic interface (used in wireless communication) or a 4P magnetic interface (used in wired communication), and the communication wire and the power wire are used together, so that the charging wire can charge in real time and communicate in real time.
Drawings
FIG. 1 is a schematic diagram of the whole flow of a wearable human body electrostatic voltage and resistance test system according to the present invention;
FIG. 2 is a schematic diagram of a wearable human body electrostatic voltage and resistance testing system according to the present invention;
FIG. 3 is a schematic flow chart of the test system according to the present invention;
FIG. 4 is a schematic diagram of the mechanism of the test probe of the present invention;
FIG. 5 is a schematic diagram of the structure of the sensing electrode according to the present invention;
FIG. 6 is a schematic view of the structure of the rotor plate according to the present invention;
FIG. 7 is a schematic diagram of the system resistance test according to the present invention.
In the figure: 10-upper shielding metal sheet, 20-insulating support, 30-lower shielding metal sheet, 40-test probe, 41-moving sheet, 42-induction electrode, 43-blade, 44-photoelectric sensor, 45-driving shaft, 46-motor, 50-test system, 60-wrist strap, 70-conducting sheet.
Detailed Description
The application provides a wearable human body electrostatic voltage and resistance testing system which is used for testing human body electrostatic voltage and resistance, and through the arranged electrostatic voltage testing system and resistance testing system, detection of the human body electrostatic voltage and resistance is realized, and the human body electrostatic voltage and system resistance value is prevented from exceeding a specified range. In order to prevent static damage of static sensitive products, people in the international standard and national standard require to enter and exit the static-proof working area to conduct human body grounding by adopting a wrist strap system and a floor-shoe beam system. When the wristband system is grounded, the resistance value of the human body system needs to be ensured to be smaller than 35MΩ, and particularly in an electric installation area, an operator needs to wear the wristband continuous monitor to monitor that the resistance value of the human body system is smaller than 35MΩ as well as the anti-static wristband. When the floor-toe system is used for grounding, the electrostatic voltage of the human body is required to be less than 100V. Therefore, in order to ensure that the electrostatic voltage and the system resistance of the human body meet the standard requirements, it is necessary to detect the electrostatic voltage and the resistance of the human body in real time.
Specifically, the wearable human body electrostatic voltage and resistance testing system comprises
The outer frame structure for contacting the measured object/human body comprises a lower shielding metal sheet 30 which can directly contact the measured object/human body to obtain the voltage of the measured object/human body, so that the voltage of the measured object/human body is in the same potential voltage with the direct contact of the measured object/human body;
The conductive sheet 70 is two conductive sheets which are not communicated with each other, one end of one conductive sheet 70 is contacted with the measured object/human body, and the other end is connected with the ground wire on the charging jack of the power circuit; one end of the other conductive sheet 70 is in contact with the object/body to be tested, and the other end is connected with a resistance test processing circuit. When the test judgment resistor shows that the system resistance test can be performed, a weak voltage or current signal is applied to a human body through the two conducting strips by the system resistance test circuit.
A test probe 40 disposed inside the outer frame structure for testing the voltage of the lower shield metal sheet 30 and converting the voltage from direct current to alternating current or an electrical signal;
A test system 50 including a voltage detection system, a resistance determination circuit, and a system resistance test circuit;
The voltage detection system obtains alternating current or electric signals released by the test probe, converts the alternating current or other electric signals into analog signals, obtains and marks out voltage values of the alternating current or electric signals through analysis of the analog signals, and uploads the voltage values to the upper computer or the display screen;
the resistance measurement judging circuit can judge whether the system is connected to the charging power supply or not, and further judge whether the human body is well grounded or not.
The system resistance test circuit is used for detecting the resistance of the human body system, weak voltage or current signals are applied to the human body through the resistance test processing circuit, corresponding current or voltage signals are measured, the resistance of the human body system is obtained and marked after analysis and processing, and the value of the system resistance is uploaded to an upper computer or a display screen.
Specifically, as shown in fig. 3: the electrostatic voltage detection system includes:
the information processing circuit is electrically connected with the test probe 40 and is used for processing the voltage or the electric signal detected in the test probe 40 into an analog signal which can be acquired by the data acquisition circuit;
The first data acquisition circuit is electrically connected with the signal processing circuit and is used for converting an analog signal in the information processing circuit into a digital signal;
The central processing unit is electrically connected with the data acquisition circuit and used for obtaining and calibrating the value of the alternating current voltage or the electric signal, processing and analyzing the digital signal, uploading the digital signal to the upper computer through the data communication module or directly displaying the digital signal on the display screen, and alarming if the electrostatic voltage of the human body is abnormal;
The data communication module is electrically connected with the central processing unit and is used for uploading the digital signal of the electrostatic voltage to the upper computer or directly displaying the digital signal on the display screen, and when the data is abnormal, a data abnormal instruction can be transmitted;
The probe control circuit is electrically connected with the central processing unit and the test probe and is used for driving and controlling the rotation or vibration of the test probe and driving and controlling the rotation or vibration of the test probe, so that the running parameters of the test probe can be obtained and used for data correction.
After the detected object/human body is worn, when the object/human body moves, a battery in the power supply circuit supplies electric energy to the detected object/human body; when the object/human body is fixed, the charger can be directly connected, so that the battery can be charged, the power ground can be used as a reference point for probe testing, the charging is convenient, and more preferably, the data communication module is in a common wired or wireless mode such as WI FI, bluetooth, ZIGBEE, USB, TCP/IP, RS485, RS232, RS422 and the like. When the wired communication is adopted, the data is temporarily stored in the circuit when a person walks or stands, and the data is packed and uploaded when the wired communication is established. When wireless communication is adopted, the real-time uploading of data can be realized.
Specifically, as shown in fig. 2: resistance measurement judging circuit:
The power supply circuit charging jack is connected with the power supply positive end and the power supply grounding end of the power supply circuit charging jack, so that whether the system is connected to a charging power supply or not can be judged, and whether the human body is well grounded or not can be further judged.
Specifically, as shown in fig. 2: the system resistance test circuit includes:
two conductive plates which are not communicated with each other, wherein one end of one conductive plate 70 is contacted with an object/human body to be tested, and the other end is connected with a ground wire on a charging jack of a power circuit; one end of the other conducting strip 70 is contacted with the tested object/human body, the other end is connected with a resistance test processing circuit, the resistance test processing circuit applies weak voltage or current signals on the human body, measures corresponding current or voltage signals and analyzes the corresponding current or voltage signals into analog signals which can be collected by a data collecting circuit II;
the data acquisition circuit II is electrically connected with the resistance test processing circuit and is used for converting an analog signal of the resistance test processing circuit into a digital signal;
The central processing unit is electrically connected with the second data acquisition circuit and used for obtaining and calibrating the resistance value of the human body system, processing and analyzing the digital signal, uploading the digital signal to the upper computer through the data communication module or directly displaying the digital signal on the display screen, and alarming if the resistance of the human body system is abnormal;
And the data communication module is electrically connected with the central processing unit and is used for uploading the resistance value of the human body system to the upper computer or directly displaying the resistance value on the display screen, and transmitting a data abnormality instruction when the data is abnormal.
Specifically, as shown in fig. 1, the outer frame structure includes:
an upper shield metal sheet 10 disposed on an upper side of the lower shield metal sheet 30;
An insulating holder 20 disposed between the upper shield metal sheet 10 and the lower shield metal sheet 30 and forming a sealed structure with the lower shield metal sheet 30 and the upper shield metal sheet 10 in which a cavity is provided, and a test probe 40 disposed inside the cavity.
Thus, when the lower shielding metal sheet 30 contacts with the measured object/human body, the lower shielding metal sheet 30 has the same voltage as the measured object/human body, and the test probe 40 converts the electrostatic voltage of the lower shielding metal sheet 30 from direct current to alternating current or other electrical signals, so as to realize monitoring.
The working principle is that the lower shielding metal sheet 30 is in direct contact with the skin of a human body, if a tested object/human body is electrified, the lower shielding metal sheet 30 is also provided with the same voltage, the test probe 40 converts the voltage into alternating current, the alternating current is amplified, filtered, rectified, secondarily amplified and the like through the signal processing circuit to be processed into an analog signal which can be acquired by the data acquisition circuit, the central processing unit controls the data acquisition circuit to convert the analog signal of the signal processing circuit into a digital signal, and the digital signal can be uploaded to an upper computer through the data communication module or directly displayed on a display screen after being processed and analyzed, and if the electrostatic voltage of the human body is abnormal, the alarm can be given.
For example, in the electronic industry, the human body electrostatic voltage is required to be not greater than the HBM 100V, and when the central processor monitors that the human body electrostatic voltage is greater than the HBM 100V, the alarm unit prompts personnel to notice that the voltage exceeds the standard. When the central processor monitors that the human body electrostatic voltage is larger than HBM 2000V, the alarm unit prompts personnel to notice that the voltage exceeds the standard. Meanwhile, the central processing unit obtains the parameters of the probe operation through the probe control circuit, further judges the probe operation performance, and adjusts the speed of the probe operation through the probe control circuit to reach the constant frequency of the probe operation.
When an operator wears the system, the resistance measurement judging circuit judges whether the system of the operator is well grounded. When the system is not connected with the power adapter, the system automatically opens the human body electrostatic voltage detection system, closes the resistance measurement judging circuit, then the lower shielding metal sheet 30 is in direct contact with the skin of the human body and has the same voltage with the human body, the voltage on the lower shielding metal sheet 30 can be tested through the test probe 40, and then the electrostatic voltage on the human body can be obtained through the processing of the subsequent circuit and the analysis of data. When the system is connected to the power adapter, the system may be turned off or may continue to turn on the human body electrostatic voltage detection system, turning on the system resistance test circuit, and the resistance test processing circuit tests the system resistance between the conductive sheet 70 (in direct contact with the human body) and the conductive sheet 70 (ground point). Through testing and analyzing the electrostatic voltage of human body and the system resistance, the grounding condition of personnel through the wrist strap system or the floor-shoe bundle system can be comprehensively known.
Specifically, as shown in fig. 3:
Further, the test probe 40 may be a direct induction type, a sensing capacitance type, a vibrating capacitance type, a rotating blade type, a feedback electric field type, or the like contact type or non-contact type probe.
It should be noted that: in the above description, the electrostatic voltage and resistance detection system should further include a power adapter for converting 220V ac power into a charging voltage (typically DC 5V) required by the system, so as to avoid danger to the human body.
In addition, referring to fig. 3-5, the application also discloses a non-contact test probe 40,
A non-contact test probe 40 comprising:
The brushless motor 46 is fixedly arranged in the cavity, and the brushless motor 46 is electrically connected with the probe control circuit and the power supply circuit;
A drive shaft 46 fixedly provided to an output shaft of the brushless motor 46, the drive shaft 46 following rotation when the brushless motor 46 is started;
A rotor 41 made of sheet metal and disposed at an end of the driving shaft 46 away from the brushless motor 46, the rotor 41 being provided with an opening 411 through which the voltage inside the lower shield metal plate 30 passes;
The induction electrode 42 is arranged outside the driving shaft 46 and is fixedly arranged inside the cavity, the induction electrode 42 is made of a plurality of groups of annularly arranged induction plates, the induction plates correspond to the openings 411, when the moving plate 41 rotates under the driving of the brushless motor 46, the moving plate 41 periodically shields the induction plates (A or B) on the induction electrodes 42, electrostatic voltage on the lower metal sheet 30 is periodically sensed on the induction plates to form an alternating current signal, the alternating current signal is transmitted to the control system 50, the alternating current signal is monitored, the monitoring of the electrostatic voltage is further realized, and the accuracy of the electrostatic voltage is ensured.
Specifically, as shown in fig. 3: the driving shaft 45 is fixedly connected with the blades 43, the photoelectric sensors 44 are arranged outside the blades 43, the photoelectric sensors 44 are electrically connected with the information processing circuit, the central processor is electrically connected with the probe control circuit, and the probe control circuit is electrically connected with the brushless motor 46, so that when the blades 43 rotate under the action of the brushless motor 46, the rotation speed of the blades 43 is detected through the photoelectric sensors 43 and is transmitted to the probe control circuit, and the probe control circuit controls the rotation speed of the brushless motor 46 according to the electric signals, so that the rotation speed stability of the brushless motor 46 is realized.
Thus, if the measured object/human body has a certain voltage (electrostatic voltage/resistance voltage), the lower shielding metal sheet 30 is in direct contact with the measured object, and also has the same voltage, the moving sheet 41 rotates at the same angular speed under the drive of the brushless motor 46, the periodic shielding induction electrode 42 periodically shields the voltage quantity induced on the induction electrode 42, an induction current is generated, the magnitude of the induction current is in direct proportion to the voltage quantity of the measured object, and the voltage on the measured object can be obtained by measuring the current. Since there is a certain error in the rotational speed of the motor, the rotational speed of the brushless motor 46 can be obtained by the photoelectric sensor 44, and data correction is performed so that the rotational speeds are kept the same.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. A wearable human body electrostatic voltage and resistance testing system is characterized in that: comprising the following steps:
The outer frame structure for contacting the detected object/human body comprises a lower shielding metal sheet (30), wherein the lower shielding metal sheet can be directly contacted with the detected object/human body to obtain the voltage of the detected object/human body so that the voltage is in the same voltage with the direct contact of the detected object/human body;
The two conducting plates (70) are not communicated with each other, one end of one conducting plate (70) is in contact with an object/human body to be tested, and the other end of the conducting plate is connected with a ground wire on a charging jack of the power circuit; one end of the other conducting strip (70) is contacted with the tested object/human body, and the other end is connected with the resistance test processing circuit;
A test probe (40) disposed inside the outer frame structure for testing the electrostatic voltage of the lower shield metal sheet (30) and converting the electrostatic voltage from direct current to alternating current or other electrical signals;
a test system (50) comprising a voltage detection system, a resistance detection and judgment circuit and a system resistance test circuit;
The voltage detection system obtains alternating current or electric signals released by the test probe, converts the alternating current or other electric signals into analog signals, obtains and marks out voltage values of the alternating current or electric signals through analysis of the analog signals, and uploads the voltage values to the upper computer or the display screen;
the resistance measurement judging circuit can judge whether the system is connected to the charging power supply or not, and further judge whether the human body is well grounded or not.
The system resistance test circuit is used for detecting the resistance of the human body system, weak voltage or current signals are applied to the human body through the resistance test processing circuit, corresponding current or voltage signals are measured, the resistance of the human body system is obtained and marked after analysis and processing, and the value of the system resistance is uploaded to an upper computer or a display screen.
2. The system for testing the electrostatic voltage and the resistance of a wearable human body according to claim 1, wherein: the electrostatic voltage detection system includes:
The information processing circuit is electrically connected with the test probe (40) and is used for processing the voltage or the electric signal detected in the test probe (40) into an analog signal which can be acquired by the data acquisition circuit;
The first data acquisition circuit is electrically connected with the signal processing circuit and is used for converting the analog signals in the information processing circuit into digital signals;
The central processing unit is electrically connected with the data acquisition circuit and used for obtaining and marking the value of the alternating current voltage or the electric signal, processing and analyzing the digital signal, uploading the digital signal to an upper computer through a data communication module or directly displaying the digital signal on a display screen, and alarming if the electrostatic voltage of the human body is abnormal;
The data communication module is electrically connected with the central processing unit and is used for uploading the digital signal of the voltage to an upper computer or directly displaying the digital signal on a display screen, and when the data is abnormal, a data abnormal instruction can be transmitted;
And the probe control circuit is electrically connected with the central processing unit and the test probe (40) and is used for driving and controlling the rotation or vibration of the test probe (40). At the same time, the parameters of the test probe (40) operation can be known for data correction.
3. The system for testing the electrostatic voltage and the resistance of a wearable human body according to claim 1, wherein: the resistance measurement judging circuit includes:
And the resistance measurement judging circuit is connected with the power supply positive end and the power supply grounding end of the power supply circuit charging jack, and can judge whether the system is connected to a charging power supply or not, so as to judge whether the human body is well grounded or not.
4. The system for testing the electrostatic voltage and the resistance of a wearable human body according to claim 1, wherein: the system resistance test circuit includes:
The resistance test processing circuit is used for applying weak voltage or current signals to a human body, measuring corresponding current or voltage signals and analyzing the corresponding current or voltage signals into analog signals which can be acquired by the data acquisition circuit II;
the data acquisition circuit II is electrically connected with the resistance test processing circuit and is used for converting an analog signal of the resistance test processing circuit into a digital signal;
The central processing unit is electrically connected with the second data acquisition circuit and used for obtaining and calibrating the resistance value of the human body system, processing and analyzing the digital signal, uploading the digital signal to the upper computer through the data communication module or directly displaying the digital signal on the display screen, and alarming if the resistance of the human body system is abnormal;
And the data communication module is electrically connected with the central processing unit and is used for uploading the resistance value of the human body system to the upper computer or directly displaying the resistance value on the display screen, and transmitting a data abnormality instruction when the data is abnormal.
5. The system for testing the electrostatic voltage and the resistance of a wearable human body according to claim 1, wherein: the outer frame structure includes:
An upper shield metal sheet (10) provided on the upper side of the lower shield metal sheet (30);
The insulating support (20) is arranged between the upper shielding metal sheet (10) and the lower shielding metal sheet (30), a sealing framework with a cavity arranged inside is formed between the insulating support and the lower shielding metal sheet (30) and the upper shielding metal sheet (10), and the test probe (40) is arranged inside the cavity.
6. The system for testing the electrostatic voltage and the resistance of a wearable human body according to claim 1, wherein: the test probe (40) is of contact type and non-contact type.
7. A wearable human electrostatic voltage and resistance testing system according to claim 3, wherein: the power supply circuit further comprises a charging jack, and the charging jack is a 2P magnetic interface or a 4P magnetic interface.
8. The system for testing the electrostatic voltage and the resistance of the wearable human body according to claim 2, wherein: the data communication module is a wired or wireless communication module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410554796.9A CN118483474A (en) | 2024-05-07 | 2024-05-07 | Wearable human body electrostatic voltage and resistance testing system |
| PCT/CN2024/093013 WO2025231925A1 (en) | 2024-05-07 | 2024-05-14 | Wearable human body electrostatic voltage and resistance testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410554796.9A CN118483474A (en) | 2024-05-07 | 2024-05-07 | Wearable human body electrostatic voltage and resistance testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118483474A true CN118483474A (en) | 2024-08-13 |
Family
ID=92193022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410554796.9A Pending CN118483474A (en) | 2024-05-07 | 2024-05-07 | Wearable human body electrostatic voltage and resistance testing system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN118483474A (en) |
| WO (1) | WO2025231925A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5798144A (en) * | 1980-12-09 | 1982-06-18 | Toshiba Corp | Detection system for electrostatic sensing voltage |
| US4800374A (en) * | 1986-10-31 | 1989-01-24 | Cray Research, Inc. | Personnel antistatic test device |
| US5872455A (en) * | 1997-05-16 | 1999-02-16 | Northrop Grumman Corporation | Wrist strap test mode circuitry |
| CN100439932C (en) * | 2004-11-17 | 2008-12-03 | 华为技术有限公司 | A Multifunctional Ground Monitoring System |
| CN106102578A (en) * | 2014-03-13 | 2016-11-09 | 萨诺智能公司 | System for monitoring body chemistry |
| CN209296816U (en) * | 2018-11-29 | 2019-08-23 | 珠海巨铭防静电科技有限公司 | Human body grounding resistance detection warning device, anti-electrostatic wrist ring and production line |
| KR102332498B1 (en) * | 2020-01-20 | 2021-11-29 | 주식회사 이에스지케이 | Smart band for measuring electrostatic of body |
| CN219659970U (en) * | 2023-05-12 | 2023-09-08 | 广州市迪士普音响科技有限公司 | Electrostatic discharge system |
-
2024
- 2024-05-07 CN CN202410554796.9A patent/CN118483474A/en active Pending
- 2024-05-14 WO PCT/CN2024/093013 patent/WO2025231925A1/en active Pending
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| Publication number | Publication date |
|---|---|
| WO2025231925A1 (en) | 2025-11-13 |
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