A safety detection device

Abstract

An embodiment of the present invention provides a safety detection device, which includes a near-electricity detection unit, a communication unit and a data processing unit; the near-electricity detection unit includes a sensing circuit, a detection chip and a signal adjustment module; the sensing circuit is used to receive an electric field signal at a specified position, the detection chip is used to perform noise reduction and signal amplification processing on the electric field signal into a voltage signal, and the signal adjustment module is used to convert the voltage signal into a digital signal; the data processing unit is used to judge the electric field safety status at the specified position; the detection chip includes an adaptive circuit, at least one low-voltage detection chip and at least one high-voltage detection chip. The safety detection device provided by the embodiment of the present invention can be simultaneously applicable to electric field detection of multiple voltage circuits, effectively improving the adaptability and efficiency of the detection.

Description

Technical Field

[0001] The present invention relates to the technical field of detection and preparation, and in particular to a visual safety detection device. Background Art

[0002] As my country's industrialization process accelerates, the personal safety of workers has received more and more attention. Various safety detection devices play a vital role in providing personal safety protection for workers. Among them, the near-electricity safety detection device is a safety auxiliary tool that can be installed in a safety helmet or used in a portable manner. It is mainly suitable for line construction workers in power, telecommunications, Unicom, petrochemicals, railways, etc. When the detection device approaches a live power source, the alarm will emit a continuous alarm sound to remind the construction workers to pay attention to safety.

[0003] The working principle of the near-electricity detection device is generally as follows: the received monitoring signal is analyzed and processed by the front end, the 50HZ power frequency signal is extracted, the interference signal is eliminated through digital filtering, and the signal strength is analyzed. When the preset value is reached, a wireless alarm signal is sent to the receiving end, and the receiving end alarms after receiving the signal, prompting the user that the device is close to strong electricity, and please pay attention to safety.

[0004] At present, the voltage levels of my country's power grid are divided into three categories. The first category: voltages of 1KV and above are called high voltage, such as 1KV, 3KV, 6KV, 10KV, 35KV, 110KV, 220KV, 330KV, 500KV, etc.; the second category: voltages below 1KV are called low voltage, such as 220V, 380V, etc.; the third category: voltages below 50V are called safe voltages, such as 12V, 24V, 36V, 42V, etc., among which the absolutely safe voltage is less than or equal to 24V.

[0005] Among them, the safety distances for different voltage levels are different. Generally, the safety distance for high-voltage lines below 1kV is 4 meters; the safety distance for 1-10kV high-voltage lines is 6 meters; the safety distance for 35-110kV high-voltage lines is 8 meters; the safety distance for 154-220kV high-voltage lines is 10 meters; the safety distance for 350-500kV high-voltage lines is 15 meters.

[0006] At present, most of the near-electricity warning devices on the market are used in simple power usage environments. They can only determine whether a circuit under a certain type of voltage is energized, and cannot be applied to circuits of multiple voltage levels at the same time. When testers use them, they need to judge the nature and level of the voltage based on their personal experience, which not only has great limitations, but also brings great safety risks to testers. Summary of the invention

[0007] The embodiment of the present invention provides a safety detection device to solve the defect in the prior art that users need to judge the voltage properties and voltage levels based on personal experience, and realize fully automatic acquisition and judgment of the electric field safety situation at a specified location.

[0008] The embodiment of the present invention provides a safety detection device, including: a near-electricity detection unit, a communication unit and a data processing unit; wherein the near-electricity detection unit includes a sensing circuit, a detection chip and a signal adjustment module; the sensing circuit is used to receive an electric field signal at a specified position, and send the electric field signal to the detection chip; the detection chip is used to perform noise reduction and signal amplification processing on the electric field signal into a voltage signal, and send the voltage signal to the signal adjustment module; the signal adjustment module is used to convert the voltage signal into a digital signal, and send it to the data processing unit through the communication unit; the data processing unit is used to analyze and process the digital signal to determine the safety of the electric field at the specified position. wherein the detection chip includes an adaptive circuit, at least one low-voltage detection chip and at least one high-voltage detection chip, the voltage detection level of the low-voltage detection chip and the high-voltage detection chip are different; the adaptive circuit is used to automatically adjust the detection sequence of the low-voltage detection chip and the high-voltage detection chip.

[0009] Furthermore, the adaptive circuit is used to automatically adjust the detection sequence of the low voltage detection chip and the high voltage detection chip, including: alternately starting the low voltage detection chip and the high voltage detection chip at a set time interval, and inputting the electric field signal to the low voltage detection chip or the high voltage detection chip until the voltage signal can be obtained.

[0010] Furthermore, the adaptive circuit is used to automatically adjust the detection order of the low-voltage detection chip and the high-voltage detection chip, and also includes: the adaptive circuit randomly arranges the detection order of the low-voltage detection chip and the high-voltage detection chip, and inputs the electric field signal to any low-voltage detection chip or high-voltage detection chip in sequence. If it exceeds the detection range, it is input to the next detection chip until the voltage signal can be obtained.

[0011] Furthermore, the adaptive circuit is used to automatically adjust the detection order of the low voltage detection chip and the high voltage detection chip, and also includes: the adaptive circuit is used to detect and sort the low voltage detection chip and the high voltage detection chip in order from high to low detection level, and perform noise reduction and signal amplification processing on the electric field signal in turn until the voltage signal is obtained.

[0012] Furthermore, the safety detection device also includes a self-test circuit, which includes: a self-test switch and an electrical signal simulation unit; the electrical signal simulation unit is used to generate an analog electric field signal and send the analog electric field signal to the induction circuit; the analog electric field signal includes at least one low-voltage analog electric field signal and at least one high-voltage analog electric field signal; the self-test switch is used to control the switching state of the electrical signal simulation unit.

[0013] Furthermore, the safety detection device also includes a GPS positioning device, which is integrated with the near-electric detection unit and the communication unit in the same mobile device and is separately communicated with the data processing unit to send the GPS positioning of the mobile device to the data processing unit in real time.

[0014] Furthermore, the safety detection device also includes an alarm unit; wherein, the electric field safety situation includes low voltage electric field unsafe and high voltage electric field unsafe; if the electric field safety situation is low voltage electric field unsafe or high voltage electric field unsafe, the data processing unit sends an electric field alarm drive signal to the alarm unit through the communication unit to drive the alarm unit to start; the electric field alarm drive signal when the low voltage electric field is unsafe is different from that when the high voltage electric field is unsafe.

[0015] Furthermore, the safety detection device further comprises an air detection unit, which comprises a harmful gas detection module and a safe gas detection module; wherein the harmful gas detection module comprises: a CO detection structure and a H 2 S detection structure, CO detection structure is used to obtain the CO concentration value at the specified location, H 2 The S detection structure is used to obtain the H at the specified position. 2 S concentration value; the safety gas detection module includes: O 2 Detection structure; 2 The detection structure is used to obtain the O at the specified position 2 concentration value; accordingly, the data processing unit includes a near-electric detection processing module and a gas detection processing module; wherein the near-electric detection processing module is used to analyze and process the digital signal to determine the electric field safety situation at the specified location; the gas detection processing module is used to analyze and process the digital signal according to the CO concentration value, H 2 S concentration and O 2 Concentration value to determine the air safety situation at a specified location.

[0016] Furthermore, the safety detection device also includes a safety explosion-proof structure; the safety explosion-proof structure includes CH 4 Measurement structure, CH 4 The measurement structure is used to obtain the CH at a specified location. 4 Concentration value; Accordingly, the data processing unit also includes a safety and explosion-proof module, which is used according to CH 4 Concentration values ​​and O 2 Concentration value, to determine the explosion-proof safety level of the specified location.

[0017] Furthermore, the safety detection device also includes an injury warning unit; the injury warning unit, the near-electric detection unit and the communication unit are integrated in the same movable device; the injury warning unit includes: an accelerometer and a gyroscope; the accelerometer is used to continuously obtain the acceleration data of the movable device, and the gyroscope is used to obtain the tilt angle of the movable device; the communication unit is used to send the acceleration data and the tilt angle to the data processing unit; accordingly, the data processing unit also includes a physiological safety warning module, which is used to judge the physiological safety status of the carrier of the movable device based on the acceleration data, the tilt angle and the timing time.

[0018] Furthermore, the injury warning unit also includes a heart rate detector, which is used to obtain the heart rate value of the carrier of the mobile device in real time and send the heart rate value to the physiological safety warning module through the communication unit.

[0019] Furthermore, the safety detection device also includes an infrared ranging unit; the infrared ranging unit is arranged in the movable device, for obtaining the height difference between the movable device and the ground, and sending the height difference to the data processing unit through the communication unit; the data processing unit obtains the height and actual position information of the route passed by the carrier of the movable device based on the height difference and combined with GPS positioning.

[0020] Furthermore, the security detection device also includes a remote collaboration unit; the remote collaboration unit includes a camera connected to the communication unit, and a voice call module.

[0021] Furthermore, the safety detection device also includes a removable power supply unit; the removable power supply unit is a combination of one or more of a rechargeable battery, an AC / DC converter or a solar cell, and is used to provide power for the near-electricity detection unit, the communication unit and the data processing unit; the removable power supply unit also includes a power feedback structure, and the power feedback structure sends the power information to the data processing unit through the communication unit in real time; the data processing unit includes a power supply power management module, which is used to send a low power warning drive signal to the warning unit when the power information is less than a set threshold, so as to drive the warning unit to start; the low power warning drive signal is different from the electric field warning drive signal.

[0022] The safety detection device provided by the embodiment of the present invention, by setting a detection chip composed of an adaptive circuit, at least one low-voltage detection chip and at least one high-voltage detection chip, determines the corresponding detection chip according to the actual electric field conditions at a specified position, and can adaptively detect circuits of various voltage levels. The operation is safe and convenient, and the detection efficiency is effectively improved to ensure the safety of the carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of a safety detection device provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the structure of another safety detection device provided by an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of a safety detection method flow chart provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] When current passes through a conductor, a corresponding electric field is generated around the conductor, so the field strength can be calculated from the electric field signal. The distribution of field strength around a charged conductor is proportional to the voltage, but inversely proportional to the distance to the conductor, that is, the higher the voltage level, the closer the distance to the conductor, and the greater the electric field strength. The stronger the electric field signal detected at a certain location, the closer the distance to the charged conductor is and / or the higher the voltage level of the charged conductor is, and accordingly, the more dangerous the location is.

[0029] like Figure 1 As shown, the safety detection device provided by the embodiment of the present invention includes but is not limited to: a near-electricity detection unit 1, a communication unit 2 and a data processing unit 3. Among them, the near-electricity detection unit 1 includes a sensing circuit 11, a detection chip 12 and a signal adjustment module 13; the sensing circuit 11 is used to receive the electric field signal of the specified position, and send the electric field signal to the detection chip 12; the detection chip 12 is used to perform noise reduction and signal amplification processing on the electric field signal to convert it into a voltage signal, and send the voltage signal to the signal adjustment module 13; the signal adjustment module 13 is used to convert the voltage signal into a digital signal, and send it to the data processing unit 3 through the communication unit 2; the data processing unit 3 is used to analyze and process the digital signal to determine the electric field safety situation at the specified position.

[0030] Among them, the detection chip 12 includes an adaptive circuit 121, at least one low voltage detection chip 122 and at least one high voltage detection chip 123, the voltage detection levels of the low voltage detection chip 122 and the high voltage detection chip 123 are different; the adaptive circuit 121 is used to automatically adjust the detection order of the low voltage detection chip 122 and the high voltage detection chip 123.

[0031] The induction circuit 11 may be an induction coil or an induction antenna, etc., and its function is to receive electric field signals when it is close to an electric field. Since there is a one-to-one correspondence between the changing electric field and the magnetic field, the size of the induced electric field can be inferred by using an induction coil or an induction antenna to receive and detect the size of the induced magnetic field. In the embodiment of the present invention, no specific limitation is made on which device or which induction circuit 11 is used to obtain the electric field signal.

[0032] Different from the prior art that only relies on human experience to judge whether the acquired electric field signal is a high-voltage electric field signal or a low-voltage signal and the corresponding voltage level, in this embodiment, after the sensing circuit 11 acquires the electric field signal of the near electric field, it sends it to the detection chip 12, and the detection chip 12 includes at least one low-voltage detection chip 122, at least one high-voltage detection chip 123, and an adaptive circuit 121 for autonomous selection. The adaptive circuit 121 is arranged between each high-voltage detection chip 123 and each low-voltage chip, and can select a suitable detection chip 12 according to the strength of the received electric field signal to complete the work of converting the input electric field signal. Specifically, for the accuracy of detection, multiple high-voltage detection chips 123 and multiple low-voltage detection chips 122 can be set according to the voltage level, and each detection chip has a different voltage detection level, which is used for a certain range of voltage level detection.

[0033] The detection chip 12 performs noise reduction and signal amplification on the input electric field signal line, and then selects a suitable high-voltage detection chip 123 or low-voltage detection chip 122 according to the strength of the electric field signal to convert the electric field signal into a corresponding voltage signal and transmit it to the signal adjustment module 13. At this time, the voltage signal is an analog signal.

[0034] Furthermore, the signal adjustment module 13 is used to perform analog-to-digital conversion on the input analog voltage signal and transform it into a corresponding digital signal, that is, the magnitude of the corresponding induced voltage is accurately obtained.

[0035] In order to take into account the convenience of use, the embodiment of the present invention can wirelessly send the digital signal output by the signal adjustment module 13 through the communication unit 2 to input it to the data processing unit 3 at the remote end, and the digital signal is analyzed and processed by the data processing unit 3 to determine the safety of the electric field at the location of the near-electric detection unit 1. Furthermore, the detection result can be fed back to the safety detection device through the communication unit 2 by the data processing unit 3.

[0036] It should be noted that the safety detection device provided in this embodiment can set the data processing unit 3 at a remote end, or can set the near-current detection unit 1, communication unit 2 and data processing unit 3 on a mobile work vehicle, or can be integrated into a portable device, and this embodiment of the present invention does not make specific limitations on this.

[0037] The safety detection device provided by the embodiment of the present invention, by setting a detection chip composed of an adaptive circuit, at least one low-voltage detection chip and at least one high-voltage detection chip, determines the corresponding detection chip according to the actual electric field conditions at a specified position, and can adaptively detect circuits of various voltage levels. The operation is safe and convenient, and the detection efficiency is effectively improved to ensure the safety of the carrier.

[0038] Based on the contents of the above embodiments, as an optional embodiment, the adaptive circuit 121 is used to automatically adjust the detection order of the low voltage detection chip 122 and the high voltage detection chip 123, including but not limited to the following methods: at a set time interval, the low voltage detection chip 122 and the high voltage detection chip 123 are alternately started, and the electric field signal is input to the low voltage detection chip 122 or the high voltage detection chip 123 until a voltage signal can be obtained.

[0039] Specifically, the detection chip 12 used in this embodiment may include a plurality of high-voltage detection chips 123, a plurality of low-voltage detection chips 122, and at least one adaptive circuit 121. The adaptive circuit 121 alternately calls (or is called connecting) each high-voltage detection chip 123 and low-voltage detection chip 122 in the detection chip 12 according to a preset frequency and working mode. For example, each high-voltage detection circuit and each low-voltage detection circuit may be alternately enabled at a time interval of 1-2 seconds.

[0040] During near-electric field detection, when an electric field signal is detected, the received electric field signal is first subjected to noise reduction and signal amplification processing, and then input into the detection chip 12. Due to the call of the adaptive circuit 121, it can be ensured that each high-voltage detection circuit and each low-voltage detection circuit will be called to respectively perform conversion processing on the electric field signal until the detection result of a certain high-voltage detection circuit or a low-voltage detection circuit can accurately obtain the voltage signal corresponding to the electric field signal.

[0041] Furthermore, in the present embodiment, the adaptive circuit 121 is used to automatically adjust the detection order of the low voltage detection chip 122 and the high voltage detection chip 123, and may also include but not be limited to the following methods: the adaptive circuit 121 randomly arranges the detection order of the low voltage detection chip 122 and the high voltage detection chip 123; the electric field signal is input to any low voltage detection chip 122 or high voltage detection chip 123 in sequence; if it exceeds the detection range, it is input to the next detection chip until the voltage signal can be obtained.

[0042] Specifically, the adaptive circuit 121 first randomly sorts each low voltage detection chip 122 and high voltage detection chip 123 to generate a detection chip sequence, and each low voltage detection chip 122 or high voltage detection chip 123 is numbered starting with 1. When the sensing circuit 11 receives the electrical signal of the external electric field, the dotted line is input to the chip numbered 1 in the order of the detection chip sequence. If the reading is not within the range, the detection circuit of the corresponding detection chip is turned off and the next chip is turned on until the voltage signal can be obtained.

[0043] Furthermore, in the present embodiment, the adaptive circuit 121 is used to automatically adjust the detection order of the low voltage detection chip 122 and the high voltage detection chip 123, and may also include but not be limited to the following methods: the adaptive circuit 121 is used to detect and sort the low voltage detection chip 122 and the high voltage detection chip 123 in order from high to low detection levels, and perform noise reduction and signal amplification processing on the electric field signal in turn until a voltage signal is obtained.

[0044] The measurement range of high-voltage circuit is relatively large, and the commonly used ones are 10KV, 35KV, and 100KV. Due to its large measurement range, it is often difficult to take into account voltages below 10kv and above 100kv during use. Therefore, the high-voltage circuit can be further subdivided into the first high-voltage circuit (1-20KV), the second high-voltage circuit (20KV-50KV), and the third high-voltage circuit (50KV-100KV); the low-voltage circuit can be further subdivided into the first low-voltage circuit (100-250V) and the second low-voltage circuit (250V-400V). When the sensing circuit 11 receives the external electric field signal, it is input into the high-voltage detection chip 123 in a set order, and the electric field signal is first input into the third high-voltage circuit. If the measured value is within the range, it is transmitted to the near-electric detection processing module in the data processing unit 3. If the reading is not within the range, it is sequentially input into the second high-voltage circuit; if the measured value is within the range, it is transmitted to the near-electric detection processing module of the control center. If the reading is still not within the range, it is sequentially input into the first high-voltage circuit. If the reading is not within the range, the detection circuit of the low-voltage detection chip 122 is turned on; the electric signal of the external electric field received by the sensing circuit 11 is input into the second low-voltage circuit of the low-voltage detection chip 122. If the measured value is within the range, it is transmitted to the near-electric detection processing module of the control center. If the reading is not within the range, it is sequentially input into the first low-voltage circuit; this cycle is repeated until the accurate voltage value is read out and transmitted to the near-electric detection processing module, and compared with the corresponding threshold value to determine whether the operator is in a safe electric field.

[0045] Specifically, since the harm of high-voltage electric field to human body is greater than that of low-voltage electric field, in order to further ensure the personal safety of the carrier of the safety detection device, in this embodiment, the adaptive circuit 121 sorts all low-voltage detection chips 122 and all high-voltage detection chips 123 according to the voltage level that can be detected, and generates a detection number. Among them, the chip numbered 1 can detect the highest voltage level.

[0046] Furthermore, since the measuring range of the high-voltage electric field is larger than the measuring range of the deferred electric field, in this embodiment, by sorting all the low-voltage detection chips 122 and all the high-voltage detection chips 123 according to the voltage levels that can be detected, the detection time can be effectively reduced and the detection efficiency can be improved.

[0047] Based on the content of the above embodiment, as an optional embodiment, the safety detection device provided by the embodiment of the present invention further includes a self-test circuit. The self-test circuit includes: a self-test switch and an electrical signal simulation unit; the electrical signal simulation unit is used to generate a simulated electric field signal and send the simulated electric field signal to the sensing circuit 11; the simulated electric field signal includes at least one low voltage simulated electric field signal and at least one high voltage simulated electric field signal; the self-test switch is used to control the switch state of the electrical signal simulation unit.

[0048] Since the safety detection device provided in the embodiment of the present invention is a device for ensuring the personal safety of the carrier, higher requirements are put forward for the reliability, safety and accuracy of its detection. In this embodiment, by setting a self-checking circuit, before the carrier approaches the workplace, at a safe distance (if it is uncertain whether the workplace is high voltage or low voltage, keep 15 meters away from the electrical equipment), the self-checking button is activated to perform the equipment self-check. When it is determined that the safety detection device carried is normal, the next step of work is carried out according to the normal operation steps.

[0049] Based on the contents of the above embodiments, as an optional embodiment, the safety detection device provided in the embodiment of the present invention further includes a GPS positioning device, which is integrated with the near-electric detection unit 1 and the communication unit 2 in the same mobile device, and is separately communicated with the data processing unit 3 to send the GPS positioning of the mobile device to the data processing unit 3 in real time.

[0050] Specifically, the GPS device can be configured to have its own power supply unit and to independently communicate with the data processing unit 3 to prevent accidental damage to the safety detection device. The specific location of the carrier can be accurately obtained through the data processing unit 3, and the safety status of the carrier can be inferred based on the positioning trajectory.

[0051] Based on the content of the above embodiment, as an optional embodiment, the safety detection device provided by the embodiment of the present invention further includes an alarm unit. The electric field safety situation includes low voltage electric field unsafe and high voltage electric field unsafe; if the electric field safety situation is low voltage electric field unsafe or high voltage electric field unsafe, the data processing unit 3 sends an electric field alarm drive signal to the alarm unit through the communication unit 2 to drive the alarm unit to start; the electric field alarm drive signal when the low voltage electric field is unsafe is different from the high voltage electric field unsafe.

[0052] Furthermore, the electric field safety situation may also include low voltage electric field safety and high voltage electric field safety. Accordingly, the warning unit configures different prompt sounds according to low voltage electric field safety or high voltage electric field safety. For example, a softer and clearer prompt sound may be configured relative to low voltage electric field unsafe or high voltage electric field unsafe.

[0053] Specifically, since the higher the voltage level, the higher the security threat to the nearby device carrier, the electric field safety situation can be simply divided according to the different electric field voltage levels, for example, it can be divided into high voltage electric field and low voltage electric field, and can be further subdivided, which will not be elaborated in this embodiment.

[0054] The situations faced by the carrier during operation are often very complicated. Sometimes, they cannot free their hands well, and they cannot always pay attention to the output devices such as the display screen. In this embodiment, an alarm unit is set to send different prompt signals to the carrier according to different detection results. The alarm unit can be an audio-visual alarm device, wherein the alarm unit can include a warning sound, a warning bell, and a flashing light; wherein the warning sound can also be divided into a short beep, a long beep, etc.; further, the alarm unit can include three modes: self-test alarm, high-voltage alarm, and low-voltage alarm. For example: the alarm signal of the low-voltage electric field is a long beep and a long flashing warning light; the alarm of the high-voltage electric field is a humming alarm sound and a short flashing warning light. The carrier can quickly judge and predict the electric field strength information at the location according to the urgency of the alarm sound and the on-off frequency of the alarm light, so as to make a quick response.

[0055] Based on the contents of the above embodiments, as an optional embodiment, the safety detection device provided in the embodiment of the present invention further includes an air detection unit; the air detection unit includes a harmful gas detection module and a safe gas detection module.

[0056] Among them, the harmful gas detection module includes: CO detection structure and H 2 S detection structure, CO detection structure is used to obtain the CO concentration value at the specified location, H 2 The S detection structure is used to obtain the H at the specified position. 2 S concentration value. The safety gas detection module includes: O 2 Detection structure; the O 2 The detection structure is used to obtain the O at the specified position 2 Concentration value.

[0057] Accordingly, the data processing unit 3 includes a gas detection processing module; the gas detection processing module is used to detect the gas concentration value, H 2 S concentration value O 2 Concentration value to determine the air safety situation at a specified location.

[0058] When performing field line maintenance work, in addition to the potential safety hazards of live overhead wiring circuits, there are often underground buried wires. The terrain of the underground buried wire space is changeable, ventilation is poor, and harmful gases cannot be detected in a timely manner, which can easily cause casualties among construction workers.

[0059] The safety detection device provided in the embodiment of the present invention is provided with an air detection unit, and a near-electricity detection processing module and a gas detection processing module are added to the data processing unit 3 to detect the air safety situation at the location of the carrier, thereby providing further protection for the carrier when working underground. In this embodiment, the air safety situation is detected by detecting CO gas, H 2 S gas, and O 2The gas content is obtained comprehensively, and the air safety situation at the designated location is judged based on the specific content of the three.

[0060] Specifically, the harmful gas detection module includes a CO detection structure and an H2S detection structure; the safe gas detection module includes an O2 detection structure. The air detection unit analyzes the real-time CO value measured by the CO detection structure, the real-time H2S value measured by the H2S detection structure, and the O2 value measured by the O2 detection structure, and sends the analysis results to the gas detection processing module; when the real-time CO value is greater than the CO set threshold, and / or the real-time H2S value is greater than the H2S set threshold, and / or the real-time O2 value is less than the O2 set threshold, the gas detection sorting module determines that the air safety condition at the location is unqualified. Furthermore, a preset signal can be sent to the sound and light alarm device, and different signals can also be sent to the sound and light alarm device according to the degree of unqualifiedness, so that the sound and light alarm device generates different sound and light alarm signals, which is convenient for the carrier to infer the safety level of the location at the first time to respond, and effectively ensure the personal safety of the carrier.

[0061] Based on the content of the above embodiment, as an optional embodiment, the air detection unit also includes a safety explosion-proof structure; the safety explosion-proof structure includes CH 4 Measurement structure, used to obtain the CH at a specified location 4 Concentration value; accordingly, the data processing unit 3 also includes a safety explosion-proof analysis module for 4 Concentration values ​​and O 2 Concentration value, to determine the explosion-proof safety level of the specified location.

[0062] Specifically, the safety explosion-proof structure at least includes: a CH4 measurement structure. Accordingly, a safety explosion-proof analysis module is also added to the data processing unit 3. The safety explosion-proof analysis module analyzes the real-time value of CH4 and 2 Concentration value, determine the upper explosion limit of CH4, lower explosion limit of CH4, O2 real-time value to comprehensively judge whether it is between the upper explosion limit (UEL) and the lower explosion limit (LEL). If it is, the third-level explosion-proof signal is activated urgently, and any open flame or electric spark is strictly prohibited during the operation, and evacuation is required as soon as possible; if it is above the upper explosion limit, no explosion will occur due to the lack of combustion-supporting materials, and no signal is required; if the combustible gas is below the lower explosion limit, and the concentration is 10% LEL of the lower explosion limit, the first-level alarm is activated; if the combustible gas CH4 concentration is below the lower explosion limit, and the concentration is 25% LEL of the lower explosion limit, the second-level alarm is activated, and any open flame or electric spark is strictly prohibited during the operation.

[0063] Based on the content of the above embodiment, as an optional embodiment, the safety detection device provided in the embodiment of the present invention further includes an injury warning unit; the injury warning unit, the near-electricity detection unit 1 and the communication unit 2 are integrated in the same movable device; the injury warning unit includes: an accelerometer and a gyroscope; the accelerometer is used to continuously obtain the acceleration data of the movable device, and the gyroscope is used to obtain the tilt angle of the movable device; the communication unit 2 is used to send the acceleration data and the tilt angle to the data processing unit 3;

[0064] Correspondingly, the data processing unit 3 further includes a physiological safety warning module, which is used to determine the physiological safety status of the carrier of the mobile device according to the acceleration data, the tilt angle and the timing time.

[0065] Specifically, the safety detection device provided in this embodiment is provided with an injury warning unit, which includes at least an accelerometer and a gyroscope, wherein the accelerometer and the gyroscope are integrated into the same movable device as the near-electric detection unit 1 and the communication unit 2. When the downward acceleration of the accelerometer is detected to exceed the set threshold, and the gyroscope is used to detect that the carrier is in a state of lying or falling (the angle with the ground is less than the preset angle threshold) and maintains this state for more than a preset time, the physiological safety warning module set in the data processing unit 3 predicts that the carrier may fall and lose the ability to move for a certain period of time.

[0066] Furthermore, the physiological safety warning module can send an alarm drive signal to the alarm unit through the communication unit 2 to wake up the carrier, or to alert other personnel working nearby. At the same time, the communication unit 2 can also send an emergency first aid request to the relevant unit organization and / or the nearest medical institution. The emergency first aid information includes sending the operator's accurate GPS address, personal medical information, etc. If the operator is not seriously injured, the operator can actively send a first aid release to cancel the first aid action in time.

[0067] Based on the contents of the above embodiments, as an optional embodiment, the safety detection device provided by the embodiment of the present invention, wherein the injury warning unit may also include a heart rate detector; the heart rate detector is used to obtain the heart rate value of the carrier of the movable device in real time, and send the heart rate value to the physiological safety warning module through the communication unit 2.

[0068] Specifically, the heart rate detector is set close to the wearer's heart or wrist pulse. When the heart rate detector monitors in real time that the wearer's heart rate is less than the set human heart rate threshold for more than a preset time, the physiological safety warning module sends an emergency first aid request.

[0069] Furthermore, if the operator's heart rate is lower than the set human heart rate threshold for more than the above-mentioned preset time and is in a gradually decreasing state, the alarm level is increased.

[0070] Furthermore, at the same time, if the downward acceleration of the accelerometer exceeds the set threshold, and the gyroscope detects that the human body is in a nearly flat state and maintains the above-mentioned preset time, it can be judged that the probability of the carrier falling, breaking bones and bleeding is high. At this time, the communication unit 2 can send an emergency first aid demand to the relevant unit and / or the nearest medical institution. The emergency first aid demand can be a pre-stored voice recording, etc., and remind the emergency center to carry plasma treatment. The above-mentioned emergency first aid information includes sending the operator's accurate GPS address, personal related medical information, etc.; if the operator is not seriously injured, the operator can actively send a first aid release to cancel the first aid behavior in time.

[0071] Based on the above embodiment, as an optional embodiment, the safety detection device provided in the embodiment of the present invention may also include an infrared ranging unit; the infrared ranging unit is arranged in the movable device, and is used to obtain the height difference between the movable device and the ground, and send the height difference to the data processing unit 3 through the communication unit 2; the data processing unit 3 obtains the height and actual position information of the route passed by the carrier of the movable device based on the height difference and combined with GPS positioning.

[0072] Furthermore, as an optional embodiment, the security detection device provided in the embodiment of the present invention may also include a remote collaboration unit; the remote collaboration unit includes a camera connected to the communication unit 2, and a voice call module.

[0073] Specifically, the control center where the data processing unit 3 is located is also connected to a remote collaboration unit connected to the communication unit 2. The remote collaboration unit includes a camera connected to the communication unit 2. The communication unit 2 synthesizes the video images scanned by the camera and / or the carrier's introduction and requirements and transmits them to the technical support center through the communication unit 2. The corresponding technical consultant of the technical support center can provide targeted guidance and replies through the received images and the voice of the on-site operators; they can also send demonstration videos of their real-time operations or teaching videos of related issues to the on-site operators.

[0074] The embodiments of the present invention solve the problem that technicians encounter thorny technical problems in the field or remote operations, which cannot be described clearly over the phone and need to be withdrawn to be handled by other technicians, which consumes a lot of manpower and time and delays the handling of the problem.

[0075] Among them, the communication unit 2 may include a SIM card and a network terminal. The carrier can directly make external calls through the communication unit 2, directly access the Internet through the SIM card, and even send the stored related work information to the network disk through the communication unit 2.

[0076] Based on the content of the above embodiment, as an optional embodiment, the safety detection device provided in the embodiment of the present invention further includes a removable power supply unit. The removable power supply unit is a combination of one or more of a rechargeable battery, an AC / DC converter or a solar cell, and is used to provide power for the near-electricity detection unit 1, the communication unit 2 and the data processing unit 3; wherein the removable power supply unit also includes a power feedback structure, and the power feedback structure sends the power information to the data processing unit 3 through the communication unit 2 in real time; the data processing unit 3 includes a power supply power management module, which is used to send a low power warning drive signal to the warning unit when the power information is less than a set threshold, so as to drive the warning unit to start; wherein the low power warning drive signal is different from the electric field warning drive signal.

[0077] Among them, the power supply unit may include a rechargeable battery connected to the safety detection device and a detachably connected AC / DC converter. Furthermore, the power supply unit also includes an external DC interface for emergency use. In addition, the power supply unit may also include a solar cell connected to the safety detection device. Among them, the power level of the power supply can be observed in time through the display screen of the safety detection device. At the same time, the safety detection device also has a low power reminder. For example, when the power level is less than 25%, the alarm unit sends a low power alarm signal; when the power level is less than 10%, another alarm signal is sent to facilitate the carrier to detect the power level according to the alarm signal or the power level.

[0078] Based on the above embodiment, as an optional embodiment, the safety detection device in this embodiment further includes a waterproof shell; the near-electricity detection unit 1 and the communication unit 2 are located in the waterproof shell, and the near-electricity detection unit 1 and the communication unit 2 are both configured as independent waterproof structures; a clamping device is provided on the waterproof shell, so that the clamping device can be used to straddle the body of the carrier.

[0079] Specifically, the detection device in this embodiment is a waterproof structure, all the joints of the shell of the detection device are completely sealed by waterproof strips, each PCB board in the internal structure is set as an independent waterproof structure, and the waterproof function of the whole device reaches IP65. Furthermore, the detection device can also include a clamping device, and the clamping device can also include a self-locking structure, through which the safety detection device is straddled on the chest work belt of the staff, which is convenient for operation and recording.

[0080] Based on the above example, as an optional embodiment, Figure 2The safety detection device provided in the embodiment of the present invention integrates all the units in the above embodiments in the same device, including:

[0081] The embodiment of the present invention provides a safety detection device, including a high voltage detection chip 123, a low voltage detection chip 122 and an adaptive circuit 121 in a near-electric detection unit 1, wherein the high voltage detection chip 123 and the low voltage detection chip 122 can be one or more (not shown in the figure). Further, the safety detection device may also include a self-test circuit. Accordingly, an electrostatic detection processing module for processing the data sent by the above components is configured in the data processing unit 3.

[0082] Furthermore, the safety detection device further comprises a remote collaboration unit, and a remote collaboration module arranged in the data processing unit 3. Furthermore, the remote collaboration module is connected to the communication module, and the communication module uses a SIM card and / or a network card for remote communication.

[0083] Furthermore, the safety detection device further comprises an alarm unit and an alarm processing module arranged in the data processing unit 3. The alarm processing module reasonably configures corresponding sound and light alarm signals according to the different received driving signals.

[0084] Furthermore, the safety detection device also includes an infrared distance measuring unit and a GPS positioning device.

[0085] Furthermore, the safety detection device also includes an injury warning unit, wherein the injury warning unit includes an accelerometer, a gyroscope and a heart rate detector. Accordingly, an injury warning module for processing the data sent by the above components is configured in the data processing unit 3. Furthermore, the injury warning module has an emergency call module, which is used to send a distress signal to relevant personnel or units in a timely manner when the injury warning module receives a warning signal, and can simultaneously drive the alarm unit to generate an alarm signal.

[0086] Furthermore, the safety detection device also includes an air detection unit, which includes a CO detection structure, H 2 S detection structure, O 2 Detection structure and CH 4 Measurement structure. Accordingly, a gas detection processing module for processing the data sent by the above components is configured in the data processing unit 3, and the gas detection processing module is connected to the alarm unit.

[0087] like Figure 3 As shown, an embodiment of the present invention provides a security detection method, which includes but is not limited to the following steps:

[0088] Step S1, obtaining an electric field signal at a specified position, where the electric field signal includes a low voltage electric field signal or a high voltage electric field signal;

[0089] Step S2, determining whether the electric field signal is a low voltage electric field signal or a high voltage electric field signal, and according to the determination result, performing noise reduction and signal amplification processing on the electric field signal to convert it into a voltage signal;

[0090] Step S3, converting the voltage signal into a digital signal;

[0091] Step S4, determining the safety status of the electric field at the designated location according to the digital signal.

[0092] Specifically, in step S1, when a worker approaches an electric field, he or she can obtain an electric field signal at a specified location through a handheld or portable device equipped with an induction circuit 11, where the electric field signal may include a low-voltage electric field signal or a high-voltage electric field signal.

[0093] Further, in step S2, the electric field condition of the location is roughly determined based on the received electric field signal, and the corresponding detection chip 12 is selected based on the electric field condition to ensure that the electric field signal can be accurately converted and processed. The conversion process mainly includes amplifying the signal after noise reduction processing of the electric field signal, and then automatically matching the corresponding processing chip according to the strength of the amplified signal, and using the chip to convert the amplified electric field signal into an analog voltage signal.

[0094] Furthermore, in step S3, based on the analog-to-digital conversion method, the voltage signal is converted into a voltage digital signal that is easy to read using a corresponding conversion device or circuit.

[0095] Furthermore, in step S4, the acquired voltage digital signal is compared with the set safe electric field threshold. When the size of the voltage digital signal is greater than or equal to the safe electric field threshold, it can be judged that the electric field safety situation at the specified location is unsafe; when the size of the voltage digital signal is less than the safe electric field threshold, it can be judged that the electric field safety situation at the specified location is safe, and the next step can be performed.

[0096] The safety detection method provided in the embodiment of the present invention automatically matches a suitable detection chip based on whether the received electric field signal is a low-voltage electric field signal or a high-voltage electric field signal, completes the step of converting the electric field signal into a voltage signal, and can adaptively detect circuits of various voltage levels. The operation is safe and convenient, and the detection efficiency is effectively improved to ensure the safety of the carrier.

[0097] Based on the contents of the above embodiments, as an optional embodiment, when the electric field safety situation at a designated location is determined to be unsafe, an alarm prompt is issued, and different alarm prompts can be set according to the unsafe level, wherein the alarm prompt includes sound and light.

[0098] Specifically, since the higher the voltage level and the closer the distance to the electric field, the higher the threat to the safety of the operator, in this embodiment, an alarm unit is provided to send different prompt signals to the carrier according to different detection results. The alarm unit may be an audible and visual alarm device, wherein the alarm unit may include a warning sound, a warning bell, and flashing lights; wherein the warning sound may also be divided into short beeps, long beeps, etc.; further, the alarm unit may include three modes: self-test alarm, high-voltage alarm, and low-voltage alarm. For example: the alarm signal of a low-voltage electric field is a long beep and a long flashing warning light; the alarm of a high-voltage electric field is a humming alarm sound and a short flashing warning light. The carrier can quickly judge and predict the electric field strength information at the location according to the urgency of the alarm sound and the on-off frequency of the alarm light, so as to respond quickly.

[0099] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0100] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A safety detection device, characterized in that: include: A proximity detection unit, a communication unit, and a data processing unit; The near-electricity detection unit includes a sensing circuit, a detection chip and a signal adjustment module; The sensing circuit is used to receive an electric field signal at a specified position and send the electric field signal to the detection chip; The detection chip is used to perform noise reduction and signal amplification processing on the electric field signal to convert it into a voltage signal, and send the voltage signal to the signal adjustment module; The signal adjustment module is used to convert the voltage signal into a digital signal and send it to the data processing unit through the communication unit; The data processing unit is used to analyze and process the digital signal to determine the safety of the electric field at the designated location; The detection chip includes an adaptive circuit, at least one low voltage detection chip and at least one high voltage detection chip, the voltage detection levels of the low voltage detection chip and the high voltage detection chip are different; the adaptive circuit is used to automatically adjust the detection order of the low voltage detection chip and the high voltage detection chip; The adaptive circuit is arranged between each high-voltage detection chip and each low-voltage chip, and automatically selects a suitable detection chip according to the strength of the received electric field signal; The detection chip adaptively detects circuits of various voltage levels; The adaptive circuit is used to automatically adjust the detection sequence of the low voltage detection chip and the high voltage detection chip, including: At set time intervals, the low voltage detection chip and the high voltage detection chip are alternately started, and the electric field signal is input to the low voltage detection chip or the high voltage detection chip until a voltage signal can be obtained; Or the adaptive circuit randomly arranges the detection order of the low voltage detection chip and the high voltage detection chip, and inputs the electric field signal to any one of the low voltage detection chip or the high voltage detection chip in sequence. If the electric field signal exceeds the detection range, it is input to the next detection chip until the voltage signal can be obtained; Or the adaptive circuit is used to detect and sort the low-voltage detection chip and the high-voltage detection chip in descending order of detection level, and perform noise reduction and signal amplification processing on the electric field signal in turn until the voltage signal is obtained.

2. The safety detection device according to claim 1, characterized in that: It also includes a self-test circuit; the self-test circuit includes: a self-test switch and an electrical signal simulation unit; The electric signal simulation unit is used to generate a simulated electric field signal and send the simulated electric field signal to the induction circuit; The analog electric field signal includes at least one low voltage analog electric field signal and at least one high voltage analog electric field signal; The self-test switch is used to control the switch state of the electrical signal simulation unit.

3. The safety detection device according to claim 1, characterized in that: It also includes a GPS positioning device; the GPS positioning device is integrated with the near-electricity detection unit and the communication unit in the same mobile device, and is separately connected to the data processing unit for communication, so as to send the GPS positioning of the mobile device to the data processing unit in real time.

4. The safety detection device according to claim 1, characterized in that: Also includes a warning unit; The electric field safety conditions include low voltage electric field unsafe and high voltage electric field unsafe; If the electric field safety condition is that the low voltage electric field is unsafe or the high voltage electric field is unsafe, the data processing unit sends an electric field warning drive signal to the warning unit through the communication unit to drive the warning unit to start; The electric field warning driving signals when the low voltage electric field is unsafe and the high voltage electric field is unsafe are different.

5. The safety detection device according to any one of claims 1 to 4, characterized in that: It also includes an air detection unit; the air detection unit includes a harmful gas detection module and a safe gas detection module; The harmful gas detection module includes: a CO detection structure and an H2S detection structure, wherein the CO detection structure is used to obtain the CO concentration value at the specified location, and the H2S detection structure is used to obtain the H2S concentration value at the specified location; The safety gas detection module includes: an O2 detection structure; the O2 detection structure is used to obtain the O2 concentration value of the specified position; Correspondingly, the data processing unit includes a gas detection processing module; the gas detection processing module is used to determine the air safety condition of the designated location according to the CO concentration value, the H2S concentration value and the O2 concentration value.

6. The safety detection device according to claim 5, characterized in that: The air detection unit also includes a safety explosion-proof structure; The safety explosion-proof structure includes a CH4 measurement structure, and the CH4 measurement structure is used to obtain the CH4 concentration value of the designated position; Correspondingly, the data processing unit further includes a safety and explosion-proof analysis module, and the safety and explosion-proof analysis module is used to determine the explosion-proof safety level of the designated location according to the CH4 concentration value and the O2 concentration value.

7. The safety detection device according to any one of claims 1 to 4, characterized in that: It also includes an injury warning unit; the injury warning unit, the near-electricity detection unit and the communication unit are integrated into the same mobile device; The injury warning unit includes: an accelerometer and a gyroscope; The accelerometer is used to continuously obtain acceleration data of the movable device, and the gyroscope is used to obtain the tilt angle of the movable device; The communication unit is used to send the acceleration data and the tilt angle to the data processing unit; Correspondingly, the data processing unit further includes a physiological safety warning module, and the physiological safety warning module is used to determine the physiological safety status of the carrier of the movable device according to the acceleration data, the tilt angle and the timing time.

8. The safety detection device according to claim 7, characterized in that: The injury warning unit also includes a heart rate detector; the heart rate detector is used to obtain the heart rate value of the carrier of the mobile device in real time, and send the heart rate value to the physiological safety warning module through the communication unit.

9. The safety detection device according to claim 8, characterized in that: It also includes an infrared distance measuring unit; the infrared distance measuring unit is arranged in the movable device, and is used to obtain the height difference between the movable device and the ground, and send the height difference to the data processing unit through the communication unit; The data processing unit obtains the height and actual position information of the route passed by the carrier of the mobile device according to the height difference and in combination with GPS positioning.

10. The safety detection device according to any one of claims 1 to 4, characterized in that: It also includes a remote collaboration unit; the remote collaboration unit includes a camera connected to the communication unit, and a voice call module.

11. The safety detection device according to claim 4, characterized in that: It also includes a removable power supply unit; the removable power supply unit is a combination of one or more of a rechargeable battery, an AC / DC converter or a solar cell, and is used to provide power for the near-electricity detection unit, the communication unit and the data processing unit; The mobile power supply unit further includes a power feedback structure, and the power feedback structure sends power information to the data processing unit through the communication unit in real time; The data processing unit includes a power supply management module, which is used to send a low power warning drive signal to the warning unit to drive the warning unit to start when the power information is less than a set threshold; the low power warning drive signal is different from the electric field warning drive signal.

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