A safety early warning monitoring method and system for live working process of substation

Abstract

The present invention discloses a safety early warning monitoring method and system for live working process of a substation, which relates to the field of early warning technology of substations, and includes the following steps: obtaining the initial coordinate information of a mobile positioning device through a GPS satellite receiver; correcting the obtained coordinate information using a carrier phase integer ambiguity fixing algorithm to obtain the final coordinate information; using a sensor to detect signs of illness, and determining whether the substation where the final coordinate information is located is safe through vital sign monitoring, and issuing an early warning based on the alarm terminal device. The present invention determines whether the human body is within a safe range of signs through changes in the human heart rate and blood sample saturation, thereby determining whether the substation where the human body is located is dangerous, so that the alarm terminal device worn by the positioned human body can send a safety early warning signal through a main control unit in a timely manner, so that personnel can evacuate the substation in dangerous areas in a timely manner.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer substation early warning, and in particular to a method and system for early warning monitoring of live working process safety in transformer substation. Background Art

[0002] During live operations at substations, the safety of operators is of vital importance. Traditional safety monitoring systems usually rely on static environmental monitoring and regular inspections, and fail to track the location and health status of operators in real time.

[0003] With the development of technology, the integration of Beidou / GPS satellite positioning system and vital signs monitoring technology provides a more accurate real-time safety warning method.

[0004] Traditional safety systems often rely on fixed environmental sensors and regular inspections, and fail to provide real-time monitoring of worker location and health status. For high-risk operations such as live substation operations, this delay may result in an inability to respond to sudden dangerous situations in a timely manner; and traditional vital signs monitoring equipment usually operates independently and is difficult to effectively integrate with positioning systems and other monitoring systems. This decentralized monitoring method may result in data not being synchronized in real time, affecting the timeliness and accuracy of safety warnings. Summary of the invention

[0005] In view of the problems existing in the existing safety early warning monitoring and system for live working process in substations, the present invention is proposed.

[0006] Therefore, the problem to be solved by the present invention is that it is impossible to detect the position and monitoring status of the operator in real time.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] In a first aspect, an embodiment of the present invention provides a method for early warning and monitoring safety during live working in a substation, which comprises the following steps:

[0009] Obtain the initial coordinate information of the mobile positioning device through the GPS satellite receiver;

[0010] The acquired coordinate information is corrected using the carrier phase integer ambiguity fixation algorithm to obtain the final coordinate information;

[0011] The sensors are used to detect signs of illness, and whether the substation where the final coordinate information is located is determined to be safe through vital sign monitoring, and an early warning is issued according to the alarm terminal equipment.

[0012] As a preferred solution of the safety early warning monitoring method for live working process of substation described in the present invention, wherein: the mobile positioning device is connected to the RTK positioning base station or CORS network server through the 4G network to receive the carrier phase;

[0013] The carrier phase is corrected with Beidou / GPS position coordinate information to obtain the coordinates of the mobile positioning device.

[0014] As a preferred solution of the safety early warning monitoring method for live working process of substation of the present invention, wherein: the sensor is wearable, and the sensor includes a photoelectric sensor and a pressure resistance sensor;

[0015] The photoelectric sensor detects the arterial blood intensity by photoelectric transmission measurement method, converts the arterial blood intensity into a PPG signal, and calculates through the PPG signal to obtain heart rate monitoring data;

[0016] The oxygen saturation of oxygenated hemoglobin and deoxygenated hemoglobin is detected by a photoelectric sensor, and the light emitting diode in the photoelectric sensor contains green light and red light, and the oxygenated hemoglobin and deoxygenated hemoglobin absorb the green light and red light according to the Beer-Lambert law, so that the oxygenated hemoglobin and the deoxygenated hemoglobin reach the same wavelength;

[0017] Finally, the blood oxygen saturation is calculated by the difference in light absorption at the same wavelength between oxygenated hemoglobin and deoxygenated hemoglobin.

[0018] As a preferred solution of the safety early warning monitoring method for live working process of substation of the present invention, wherein: determining the GPS position coordinate information of the current alarm terminal device;

[0019] Searching for other alarm terminal devices within a preset radius around the location of the current alarm terminal device;

[0020] Filtering the target alarm terminal device from other alarm terminal devices that have been searched;

[0021] Send a distress signal and the GPS location coordinate information of the current alarm terminal device to the target alarm terminal device;

[0022] Filtering target alarm terminal devices from other searched alarm terminal devices includes: searching for Bluetooth signals and network signals of other alarm terminal devices within a preset radius around the position of the current alarm terminal device; sorting the other searched alarm terminal devices according to distance from near to far to obtain a target filtering list, and filtering the top N alarm terminal devices from the target filtering list as target alarm terminal devices.

[0023] As a preferred solution of the safety early warning monitoring method for live working process of substation described in the present invention, wherein: the GPS position coordinate information is corrected by using the carrier phase integer ambiguity fixing algorithm to obtain the final coordinate information of the mobile positioning device, including the following operation steps:

[0024] The mobile positioning device is connected to the RTK positioning base station or the CORS network server via the 4G network to receive the carrier phase;

[0025] The carrier phase is used to correct the GPS position coordinate information using a carrier phase integer ambiguity fixing algorithm to obtain accurate coordinates of the mobile positioning device.

[0026] As a preferred solution of the safety early warning monitoring method for live working process of substation described in the present invention, the step of obtaining the heart rate monitoring data is as follows:

[0027] Photoelectric sensors consist of a light emitting diode and a photodetector;

[0028] The light emitting diode detects the arterial blood intensity by projected light or reflected light by photoelectric transmission measurement method, and the arterial blood intensity is converted into a PPG signal by a photodetector;

[0029] Based on the PPG signal, the heart rate is calculated by the number of heart beats per minute to obtain the heart rate monitoring data.

[0030] As a preferred solution of the safety early warning monitoring method for live working process of substation of the present invention, wherein: the photoelectric sensor measures the blood oxygen saturation monitoring range based on the blood oxygen saturation in the detection area, and the specific steps are:

[0031] Calculate blood oxygen saturation based on the PPG signal and select feature points based on the waveform of the PPG signal;

[0032] Taking the starting point of the peak of the PPG signal waveform as the starting point, finding the trough of the waveform, and defining the position of the trough as the valley point of the waveform;

[0033] Taking the end point of the wave crest as the end point, find another wave trough of the waveform, and define the position of the wave trough as another valley point of the waveform.

[0034] In a second aspect, an embodiment of the present invention provides a safety early warning monitoring system for live working process of a substation, which includes a GPS satellite receiver module, a carrier phase integer ambiguity fixing algorithm module, a vital sign monitoring module, and a substation safety monitoring module;

[0035] The GPS satellite receiver module is used to obtain the initial coordinate information of the mobile positioning device;

[0036] The carrier phase integer ambiguity fixing algorithm module is used to correct the acquired coordinate information to obtain the final coordinate information;

[0037] The vital signs monitoring module is used to determine whether the substation where the final coordinate information is located is safe;

[0038] The substation safety monitoring module is used for safety monitoring of the substation.

[0039] In a third aspect, an embodiment of the present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, wherein: when the processor executes the computer program, it implements any step of the above-mentioned method for safety early warning monitoring of live working process of substation.

[0040] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program is executed by a processor, any step of the above-mentioned method for safety early warning monitoring of live working process of a substation is implemented.

[0041] The beneficial effects of the present invention are as follows: the light emitting diode of the photoelectric sensor is used to detect the arterial blood strength by using the photoelectric transmission measurement method, and the heart beat generated by the arterial blood strength is converted into a PPG signal by the photoelectric detector of the photoelectric sensor; the heart rate is calculated by the PPG signal, thereby obtaining the heart rate monitoring data, so as to understand the heart health of the human body, whether the heart rate is unstable due to the influence of the voltage of the substation, etc., which threatens the human body; the blood oxygen saturation is calculated by the different concentration ratios of the two, so that the blood sample content in the human blood can be known, and whether the human body is safe;

[0042] By observing the changes in the human heart rate and the saturation of the blood samples, it can be determined whether the human body is within a safe range of physical signs, and whether the substation where the human body is located is dangerous. In this way, the alarm terminal device worn by the located human body can send a safety warning signal through the main control unit in time, so that personnel can evacuate the substation in the dangerous area in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0044] Figure 1 The figure is a flow chart of the safety early warning monitoring method for live working process in substation. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0047] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0048] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0049] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] Example 1

[0052] Reference Figure 1, which is the first embodiment of the present invention, and provides a method for monitoring safety early warning during live working in a substation, comprising the following steps:

[0053] S1. Obtain the initial coordinate information of the mobile positioning device through a GPS satellite receiver.

[0054] The mobile positioning device is connected to the RTK positioning base station or the CORS network server via the 4G network to receive the carrier phase;

[0055] The carrier phase is corrected with Beidou / GPS position coordinate information to obtain the coordinates of the mobile positioning device.

[0056] S2. Correct the acquired coordinate information using a carrier phase integer ambiguity fixation algorithm to obtain the final coordinate information.

[0057] It should be noted that the mobile positioning device and the alarm terminal device are connected to the Beidou / GPS satellite receiver through the main control unit (i.e., the main control unit is mainly responsible for processing the light intensity signal, applying the Beer-Lambert law, performing data analysis, calculating the blood oxygen saturation, and displaying the results to the transmission control center), and the Beidou / GPS position coordinate information of the mobile positioning device is obtained in real time using the serial port interface;

[0058] The mobile positioning device is connected to an RTK positioning base station (i.e., an RTK (Real-Time Kinematic) positioning base station: a base station that provides high-precision positioning data, which communicates with satellites of the Global Positioning System (GPS) or other satellite navigation systems to calculate and broadcast correction information in real time) or a CORS network server (i.e., a CORS (Continuously Operating Reference Station) network: a network composed of multiple reference stations that provide long-term stable positioning data and transmit and correct data through the network) through a 4G network, and receives a carrier phase (i.e., a carrier phase is an important parameter in a satellite signal and is used for high-precision positioning; it refers to the phase change of a satellite signal and is closely related to the propagation path of the satellite signal); the carrier phase is corrected with Beidou / GPS position coordinate information to obtain accurate coordinates of the mobile positioning device;

[0059] The carrier phase integer ambiguity fixing algorithm corrects the coordinate information of the mobile positioning device (that is, it corrects the Beidou / GPS position coordinate information of the mobile positioning device; that is, the carrier phase integer ambiguity fixing algorithm is used to solve the problem of integer multiple wavelengths of ambiguity, and the goal is to convert the ambiguity from a floating value to an accurate integer value to improve positioning accuracy; ambiguity refers to the periodic phase changes in satellite signals, which are usually integer multiples of wavelengths. Accurately resolving these ambiguities is crucial for precise positioning).

[0060] Determine the GPS location coordinate information of the current alarm terminal device;

[0061] Searching for other alarm terminal devices within a preset radius around the location of the current alarm terminal device;

[0062] Filtering the target alarm terminal device from other alarm terminal devices that have been searched;

[0063] Send a distress signal and the GPS location coordinate information of the current alarm terminal device to the target alarm terminal device;

[0064] Filtering target alarm terminal devices from other searched alarm terminal devices includes: searching for Bluetooth signals and network signals of other alarm terminal devices within a preset radius around the position of the current alarm terminal device; sorting the other searched alarm terminal devices according to distance from near to far to obtain a target filtering list, and filtering the top N alarm terminal devices from the target filtering list as target alarm terminal devices.

[0065] The GPS position coordinate information is corrected using the carrier phase integer ambiguity fixation algorithm to obtain the final coordinate information of the mobile positioning device, including the following steps:

[0066] The mobile positioning device is connected to the RTK positioning base station or the CORS network server via the 4G network to receive the carrier phase;

[0067] The carrier phase is used to correct the GPS position coordinate information using a carrier phase integer ambiguity fixing algorithm to obtain accurate coordinates of the mobile positioning device.

[0068] S3. Detecting signs of illness using sensors, determining whether the substation where the final coordinate information is located is safe through vital sign monitoring, and issuing an early warning based on the alarm terminal device.

[0069] The sensor is wearable, and includes a photoelectric sensor and a pressure resistance sensor;

[0070] The photoelectric sensor detects the arterial blood intensity by photoelectric transmission measurement method, converts the arterial blood intensity into a PPG signal, and calculates through the PPG signal to obtain heart rate monitoring data;

[0071] The step of obtaining the heart rate monitoring data is:

[0072] Photoelectric sensors consist of a light emitting diode and a photodetector;

[0073] It should be noted that the photoelectric sensor includes a light-emitting diode and a photodetector, and determines the heart rate by measuring the electrical signal of the myocardial contraction of the heart, and monitors it using photoplethysmography (PPG); the photoelectric sensor uses a photoelectric transmission measurement method to project light or reflect light onto the skin of the operator, and the projected light or reflected light will be absorbed and scattered when it passes through the skin and the underlying tissue. Since the blood volume in the artery changes each time the heart pumps blood (i.e., the heart beats), the amount of light (i.e., transmitted light or reflected light) absorbed will also change accordingly, and this change will affect the intensity of the transmitted light or reflected light (i.e., changes with each heart beat; if the amount of blood in the artery increases each time the heart contracts, the absorption of light will increase;

[0074] Therefore, the intensity of the transmitted light or reflected light is weakened; if the heart relaxes, the amount of blood in the artery decreases, the absorption of light decreases, and the intensity of the transmitted light or reflected light increases), thereby detecting the arterial blood intensity; due to the change in light absorption caused by the pulsation of arterial blood, the light intensity detected by the photodetector will have periodic fluctuations, and these fluctuations will be converted into electrical signals (i.e., PPG signals, periodic fluctuations refer to the regular fluctuations of the heartbeats that repeat at fixed time intervals, and maintain a frequency for beating); the heart rate can be calculated by the number of heartbeats per minute, and can be estimated by the equation. The PPG signal is similar to the principle of electrocardiogram to estimate the heart rate;

[0075] Photoelectric transmission measurement is a method where a sensor sends light to the skin and measures the reflected / transmitted light. Every time the heart pumps blood, this wavelength is heavily absorbed, thus determining the heartbeat.

[0076] The light emitting diode detects the arterial blood intensity by projected light or reflected light by photoelectric transmission measurement method, and the arterial blood intensity is converted into a PPG signal by a photodetector;

[0077] Based on the PPG signal, the heart rate is calculated by the number of heart beats per minute to obtain the heart rate monitoring data.

[0078] The oxygen saturation of oxygenated hemoglobin and deoxygenated hemoglobin is detected by a photoelectric sensor, and the light emitting diode in the photoelectric sensor contains green light and red light, and the oxygenated hemoglobin and deoxygenated hemoglobin absorb the green light and red light according to the Beer-Lambert law, so that the oxygenated hemoglobin and the deoxygenated hemoglobin reach the same wavelength;

[0079] It should be noted that the light-emitting diode of the photoelectric sensor is used to monitor the shallow position of the subcutaneous artery of the finger, earlobe or foot, and the blood oxygen saturation is calculated by the difference between the light absorption characteristics of oxygenated hemoglobin and deoxygenated hemoglobin at a specific wavelength through the light source green light, red light and infrared light (that is, green light, red light and infrared light under different light sources of the light-emitting diode can produce different light absorption effects on oxygenated hemoglobin and deoxygenated hemoglobin in blood tissue, thereby producing different wavelengths; the blood oxygen saturation is calculated by the difference between different light absorption characteristics at the same specific wavelength);

[0080] However, because the molar extinction coefficients of oxyhemoglobin and deoxyhemoglobin are almost similar at green and infrared wavelengths, but different at red wavelengths, the amount of oxygen in the blood cannot be detected through oxyhemoglobin and deoxyhemoglobin (i.e., oxyhemoglobin and deoxyhemoglobin have different absorption characteristics under different wavelengths of light, so at certain wavelengths, the degree of light absorption by oxyhemoglobin and deoxyhemoglobin is different, so the amount of oxygen in the blood cannot be calculated); therefore, the Beer-Lambert law is used (i.e., the Beer-Lambert law describes the relationship between the intensity of light and the concentration of the medium and the optical path length when light passes through an absorbing medium (i.e., oxyhemoglobin and deoxyhemoglobin) to make oxyhemoglobin and deoxyhemoglobin absorb green and red light, so that the fluctuations of green and red light absorbed in the blood are the same, which can make the degree of light absorption by oxyhemoglobin and deoxyhemoglobin easier to calculate the amount of oxygen in the blood.

[0081] Finally, the blood oxygen saturation is calculated by the difference in light absorption at the same wavelength between oxygenated hemoglobin and deoxygenated hemoglobin.

[0082] The projected light or reflected light of a light-emitting diode is used as a light source to illuminate the skin (i.e., the illuminated skin can be different positions of the chest, fingertips, neck and wrist, and the final PPG signal can be detected). The photoelectric transmission measurement method is used to detect the changes in the blood volume in the heart through the skin and the underlying tissues when the arterial blood beats during cardiac activity. The changes change with each heart beat; if the amount of blood in the artery increases each time the heart contracts, the absorption of light increases, and the intensity of the transmitted light or reflected light decreases; if the heart relaxes, the amount of blood in the artery decreases, the absorption of light decreases, and the intensity of the transmitted light or reflected light increases, thereby detecting the blood intensity in the artery; the beating condition of the artery is judged by the blood condition of the heart, and the beating condition of the artery is converted into a PPG signal through a photoelectric detector;

[0083] After oxygenated hemoglobin and deoxygenated hemoglobin absorb green light and red light of the same wavelength, and then absorb green light and red light of the same wavelength, the absorption degree of oxygenated hemoglobin and deoxygenated hemoglobin is different. The difference is calculated by using the different absorption degrees of both parties. The difference is the concentration ratio of oxygenated hemoglobin and deoxygenated hemoglobin in the blood determined by the PPG sensor. The blood oxygen saturation is calculated based on this ratio (that is, the PPG sensor uses light sources of different wavelengths (such as red light and green light), and the red light and green light are used to irradiate the skin and are absorbed by the blood; the oxygenated hemoglobin in the blood Hemoglobin and deoxyhemoglobin have different absorption characteristics for light of different wavelengths (i.e., oxyhemoglobin absorbs red light more strongly, while deoxyhemoglobin absorbs green light more strongly), so the degree of absorption of red light and green light by oxyhemoglobin and deoxyhemoglobin will be different; the PPG sensor calculates the relative concentration ratio of oxyhemoglobin and deoxyhemoglobin by comparing the absorption levels of different light wavelengths; the concentration ratio obtained from the absorbance difference is used to calculate the blood oxygen saturation (i.e., blood oxygen saturation represents the proportion of oxygenated hemoglobin in the blood, which reflects the oxygenation of the blood).

[0084] The photoelectric sensor measures the blood oxygen saturation monitoring range based on the blood oxygen saturation in the detection area, and the specific steps are as follows:

[0085] Calculate blood oxygen saturation based on the PPG signal and select feature points based on the waveform of the PPG signal;

[0086] Taking the starting point of the peak of the PPG signal waveform as the starting point, finding the trough of the waveform, and defining the position of the trough as the valley point of the waveform;

[0087] Taking the end point of the wave crest as the end point, find another wave trough of the waveform, and define the position of the wave trough as another valley point of the waveform.

[0088] In summary, the present invention determines whether the human body is within a safe range of physical signs through changes in the human body's heart rate and blood sample saturation, thereby determining whether the substation where the human body is located is dangerous, and can promptly transmit a safety warning signal to the alarm terminal device worn by the located human body through the main control unit, so that personnel can evacuate the substation in the dangerous area in time.

[0089] Example 2

[0090] On the basis of the first embodiment, this embodiment further provides a safety early warning monitoring system for live working process of a substation, comprising a GPS satellite receiver module, a carrier phase integer ambiguity fixing algorithm module, a vital sign monitoring module, and a substation safety monitoring module;

[0091] The GPS satellite receiver module is used to obtain the initial coordinate information of the mobile positioning device;

[0092] The carrier phase integer ambiguity fixing algorithm module is used to correct the acquired coordinate information to obtain the final coordinate information;

[0093] The vital signs monitoring module is used to determine whether the substation where the final coordinate information is located is safe;

[0094] The substation safety monitoring module is used for safety monitoring of the substation.

[0095] This embodiment also provides a computer device, which is suitable for the case of a safety early warning monitoring method for live working process in a substation, including a memory and a processor; the memory is used to store computer executable instructions, and the processor is used to execute computer executable instructions to implement the safety early warning monitoring method for live working process in a substation as proposed in the above embodiment.

[0096] The computer device may be a terminal, and the computer device includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device may be a touch layer covering the display screen, or a key, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.

[0097] This embodiment also provides a storage medium on which a computer program is stored. When the program is executed by a processor, the method for implementing the safety early warning monitoring method for live working process of a substation as proposed in the above embodiment is implemented.

[0098] The storage medium proposed in this embodiment and the data storage method proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be found in the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0099] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A safety early warning monitoring method for live working process in a substation, characterized by: The following steps are included: Obtain the initial coordinate information of the mobile positioning device through the GPS satellite receiver; The acquired coordinate information is corrected using the carrier phase integer ambiguity fixation algorithm to obtain the final coordinate information; The sensors are used to detect signs of illness, and whether the substation where the final coordinate information is located is determined to be safe through vital sign monitoring, and an early warning is issued according to the alarm terminal device.

2. The method for early warning and monitoring safety during live working in a substation according to claim 1, characterized in that: The mobile positioning device is connected to the RTK positioning base station or the CORS network server via the 4G network to receive the carrier phase; The carrier phase is corrected with Beidou / GPS position coordinate information to obtain the coordinates of the mobile positioning device.

3. The safety early warning monitoring method for live working process of substation according to claim 2 is characterized by: The sensor is wearable, and includes a photoelectric sensor and a pressure resistance sensor; The photoelectric sensor detects the arterial blood intensity by photoelectric transmission measurement method, converts the arterial blood intensity into a PPG signal, and calculates through the PPG signal to obtain heart rate monitoring data; The oxygen saturation of oxygenated hemoglobin and deoxygenated hemoglobin is detected by a photoelectric sensor, and the light emitting diode in the photoelectric sensor contains green light and red light, and the oxygenated hemoglobin and deoxygenated hemoglobin absorb the green light and red light according to the Beer-Lambert law, so that the oxygenated hemoglobin and the deoxygenated hemoglobin reach the same wavelength; Finally, the blood oxygen saturation is calculated by the difference in light absorption at the same wavelength between oxygenated hemoglobin and deoxygenated hemoglobin.

4. The method for early warning and monitoring safety during live working in a substation according to claim 3, characterized in that: Determine the GPS location coordinate information of the current alarm terminal device; Searching for other alarm terminal devices within a preset radius around the location of the current alarm terminal device; Filtering the target alarm terminal device from other alarm terminal devices that have been searched; Send a distress signal and the GPS location coordinate information of the current alarm terminal device to the target alarm terminal device; Filtering the target alarm terminal device from other alarm terminal devices that have been searched, including: searching for Bluetooth signals and network signals of other alarm terminal devices within a preset radius around the location of the current alarm terminal device; The other alarm terminal devices found are sorted according to distance from near to far to obtain a target screening list, and the top N alarm terminal devices are screened from the target screening list as target alarm terminal devices.

5. The method for safety early warning monitoring of live working process in substation according to claim 4, characterized in that: The GPS position coordinate information is corrected using the carrier phase integer ambiguity fixation algorithm to obtain the final coordinate information of the mobile positioning device, including the following steps: The mobile positioning device is connected to the RTK positioning base station or the CORS network server via the 4G network to receive the carrier phase; The carrier phase is used to correct the GPS position coordinate information using a carrier phase integer ambiguity fixing algorithm to obtain accurate coordinates of the mobile positioning device.

6. The method for early warning and monitoring safety during live working in a substation according to claim 5, characterized in that: The step of obtaining the heart rate monitoring data is: Photoelectric sensors consist of a light emitting diode and a photodetector; The light emitting diode detects the arterial blood intensity by projected light or reflected light by photoelectric transmission measurement method, and the arterial blood intensity is converted into a PPG signal by a photodetector; Based on the PPG signal, the heart rate is calculated by the number of heart beats per minute to obtain the heart rate monitoring data.

7. The method for safety early warning monitoring of live working process in substation according to claim 6, characterized in that: The photoelectric sensor measures the blood oxygen saturation monitoring range based on the blood oxygen saturation in the detection area, and the specific steps are as follows: Calculate blood oxygen saturation based on the PPG signal and select feature points based on the waveform of the PPG signal; Taking the starting point of the peak of the PPG signal waveform as the starting point, finding the trough of the waveform, and defining the position of the trough as the valley point of the waveform; Taking the end point of the wave crest as the end point, find another wave trough of the waveform, and define the position of the wave trough as another valley point of the waveform.

8. A safety early warning monitoring system for live working process in a substation, based on the safety early warning monitoring method for live working process in a substation according to any one of claims 1 to 7, characterized in that: It includes GPS satellite receiver module, carrier phase integer ambiguity fixation algorithm module, vital signs monitoring module, and substation safety monitoring module; The GPS satellite receiver module is used to obtain the initial coordinate information of the mobile positioning device; The carrier phase integer ambiguity fixing algorithm module is used to correct the acquired coordinate information to obtain the final coordinate information; The vital signs monitoring module is used to determine whether the substation where the final coordinate information is located is safe; The substation safety monitoring module is used for safety monitoring of the substation.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method for safety early warning and monitoring of live working process in a substation according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for safety early warning and monitoring of live working process in a substation according to any one of claims 1 to 7 are implemented.

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