CN113920962A - Display device and method - Google Patents
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- CN113920962A CN113920962A CN202111101549.6A CN202111101549A CN113920962A CN 113920962 A CN113920962 A CN 113920962A CN 202111101549 A CN202111101549 A CN 202111101549A CN 113920962 A CN113920962 A CN 113920962A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
Abstract
The invention discloses display equipment and a display method, which are used for solving the problems that the display equipment for alarming through display in the prior art needs extra installation space, extra power supply and peripheral equipment and is poor in flexibility. The display equipment disclosed by the invention comprises a TCON board and a display, wherein the TCON board can convert received real-time current into real-time voltage, the real-time voltage is compared with a preset voltage threshold value, color temperature processing is carried out on a display picture according to a comparison result, the display displays the display picture after the color temperature processing, and the real-time current is output by a gas detection module according to gas parameters in the air. Because the TCON board can be integrated to the display backplate, need not extra installation space, extra power and peripheral hardware, in addition, the TCON board can carry out the colour temperature according to real-time voltage to the display screen and handle to show on the display, thereby can realize dynamic demonstration early warning, improve the flexibility.
Description
Technical Field
The invention relates to the technical field of display, in particular to display equipment and a display method.
Background
At present, most of indoor and in-vehicle equipment for monitoring air quality is through audible alarm, and most of monitoring equipment can only send out an alarm when monitoring that gas concentration exceeds standard, if a monitoring sensor is leaked to domestic natural gas, when gas exceeds an early warning value, sound early warning can be started, but the early warning mode is not suitable for some crowds with hearing loss.
For some people with hearing impairment, people can escape in a display alarm mode, but the existing display equipment for displaying alarm needs extra installation space, extra power supply and peripheral equipment, and is poor in flexibility.
Disclosure of Invention
The invention provides a display device and a display method, which are used for solving the problems that the display device for displaying alarm in the prior art needs extra installation space, extra power supply and peripheral equipment and is poor in flexibility.
The method comprises the following steps:
in a first aspect, an embodiment of the present invention provides a display device, where the display device includes: timing Controller (TCON) board and display, wherein:
the TCON board is used for converting the received real-time current into real-time voltage, comparing the real-time voltage with a preset voltage threshold value and carrying out color temperature processing on a display picture according to a comparison result;
the display is used for displaying the display picture after color temperature processing;
and the real-time current is output by the gas detection module according to gas parameters in the air.
In one possible implementation, the TCON board includes:
the current conversion module is used for converting the received real-time current into real-time voltage;
the voltage comparison module is used for comparing the real-time voltage with the preset voltage threshold and outputting a comparison voltage;
and the color temperature processing module is used for carrying out color temperature processing on the display picture according to the comparison voltage.
In one possible implementation, the preset voltage threshold includes a first preset voltage threshold and a second preset voltage threshold; the comparison voltage comprises a first comparison voltage and a second comparison voltage;
the voltage comparison module is used for comparing the real-time voltage with the first preset voltage threshold and outputting a first comparison voltage; and comparing the real-time voltage with the second preset voltage threshold value and outputting a second comparison voltage.
In a possible implementation manner, the color temperature processing module is specifically configured to:
if the first comparison voltage is smaller than a preset value and the second comparison voltage is smaller than the preset value, controlling the display picture to be an initial color temperature;
if the first comparison voltage is greater than or equal to the preset value and the second comparison voltage is smaller than the preset value, controlling the display picture to be an early warning color temperature corresponding to the gas parameter;
and if the first comparison voltage is greater than or equal to the preset value and the second comparison voltage is greater than or equal to the preset value, controlling the display picture to be the dangerous color temperature.
In one possible implementation, the apparatus further includes:
the gas acquisition module is used for outputting real-time current according to gas parameters in the air;
the color temperature stabilizing module is used for maintaining the color temperature of the current display picture unchanged within a preset time length when the first comparison voltage or the second comparison voltage meets one of the following preset conditions:
the first comparison voltage is changed from being smaller than the preset value to being larger than or equal to the preset value;
the first comparison voltage is changed from being larger than or equal to the preset value to being smaller than the preset value;
the second comparison voltage is changed from being smaller than the preset value to being larger than or equal to the preset value;
the second comparison voltage is changed from being larger than or equal to the preset value to being smaller than the preset value.
In a second aspect, an embodiment of the present invention provides a display method, where the method includes:
converting the received real-time current into real-time voltage, comparing the real-time voltage with a preset voltage threshold, and performing color temperature processing on a display picture according to a comparison result;
displaying the display picture after color temperature processing;
and the real-time current is output by the gas detection module according to gas parameters in the air.
In a possible implementation manner, the comparing the real-time voltage with a preset voltage threshold, and performing color temperature processing on a display screen according to a comparison result includes:
comparing the real-time voltage with the preset voltage threshold value to obtain a comparison voltage;
carrying out color temperature processing on a display picture according to the comparison voltage;
the preset voltage threshold comprises a first preset voltage threshold and a second preset voltage threshold; the comparison voltage comprises a first comparison voltage and a second comparison voltage;
comparing the real-time voltage with the preset voltage threshold to obtain a comparison voltage, including:
comparing the real-time voltage with the first preset voltage threshold value to obtain a first comparison voltage; and comparing the real-time voltage with the second preset voltage threshold value and outputting a second comparison voltage.
In a possible implementation manner, the performing color temperature processing on the display picture according to the comparison voltage includes:
if the first comparison voltage is smaller than a preset value and the second comparison voltage is smaller than the preset value, controlling the display picture to be an initial color temperature;
if the first comparison voltage is greater than or equal to the preset value and the second comparison voltage is smaller than the preset value, controlling the display picture to be an early warning color temperature corresponding to the gas parameter;
and if the first comparison voltage is greater than or equal to the preset value and the second comparison voltage is greater than or equal to the preset value, controlling the display picture to be the dangerous color temperature.
In one possible implementation, the method further includes:
outputting real-time current according to gas parameters in the air;
when the first comparison voltage or the second comparison voltage meets one of the following preset conditions, the color temperature of the current display picture is kept unchanged within a preset time length:
the first comparison voltage is changed from being smaller than the preset value to being larger than or equal to the preset value;
the first comparison voltage is changed from being larger than or equal to the preset value to being smaller than the preset value;
the second comparison voltage is changed from being smaller than the preset value to being larger than or equal to the preset value;
the second comparison voltage is changed from being larger than or equal to the preset value to being smaller than the preset value.
In a third aspect, an embodiment of the present invention provides a storage medium, and the computer program instructions, when executed by a processor, implement the method according to any one of the second aspect.
The invention has the following beneficial effects:
in the embodiment of the invention, the display equipment comprises a TCON board and a display, the TCON board can convert received real-time current into real-time voltage, the real-time voltage is compared with a preset voltage threshold, color temperature processing is carried out on a display picture according to a comparison result, the display displays the display picture after the color temperature processing, and the real-time current is output by the gas detection module according to gas parameters in the air. Because the TCON board can be integrated to display device's backplate, need not extra installation space, extra power and peripheral hardware, in addition, the TCON board can carry out the colour temperature according to real-time voltage to the display screen and handle to show on the display, thereby can realize dynamic demonstration early warning, improve the flexibility.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a TCON board according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another TCON board according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another TCON board according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another TCON board according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating the operation of a gas sensor according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a gas sensor circuit according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a CO gas sensor according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a display method according to an embodiment of the present invention;
fig. 10 is a schematic overall flowchart of a display method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a natural environment, the normal content of carbon monoxide in the air is 0.8PPM, the normal content of carbon dioxide is 0.04% (400PPM), and the content of oxygen is 20.954%, as shown in table 1, the influence of the concentration of CO provided by the embodiment of the present invention on the human physiology is shown schematically, as shown in table 2, the influence of the concentration of CO2 provided by the embodiment of the present invention on the human physiology is shown schematically, as shown in table 3, the influence of the concentration of O2 provided by the embodiment of the present invention on the human physiology is shown schematically. The content of gas in the air is not in normal content scope to when producing harm to the human body, display device can report to the police through showing, and at present, most display device that carries out the police dispatch newspaper based on the display screen all need extra installation space, extra power and peripheral hardware, and the flexibility is poor, only can send out the police dispatch newspaper when gas concentration exceeds standard in the space in addition, can't realize dynamic early warning.
TABLE 1
TABLE 2
TABLE 3
Based on the above problems, embodiments of the present invention provide a display device and a display method, so as to solve the problem that the display device based on display alarm in the prior art needs additional installation space, additional power supply and peripheral devices, and is poor in flexibility.
The display device provided by the exemplary embodiment of the present application is described below with reference to the drawings in conjunction with the application scenarios described above, it should be noted that the above application scenarios are only shown for the convenience of understanding the spirit and principles of the present application, and the embodiments of the present application are not limited in this respect.
As shown in fig. 1, a schematic structural diagram of a display device provided in an embodiment of the present invention is shown, where the display device includes: timing controller TCON board 10 and display 20, wherein:
the TCON board 10 is configured to convert the received real-time current into a real-time voltage, compare the real-time voltage with a preset voltage threshold, and perform color temperature processing on a display picture according to a comparison result;
a display 20 configured to display the display screen subjected to the color temperature processing;
the real-time current is output by the gas detection module according to gas parameters in the air.
In the embodiment of the invention, the display equipment comprises a TCON board and a display, the TCON board can convert received real-time current into real-time voltage, the real-time voltage is compared with a preset voltage threshold, color temperature processing is carried out on a display picture according to a comparison result, the display displays the display picture after the color temperature processing, and the real-time current is output by the gas detection module according to gas parameters in the air. Because the TCON board can be integrated to the display backplate, need not extra installation space, extra power and peripheral hardware, in addition, the TCON board can carry out the colour temperature according to real-time voltage to the display screen and handle to show on the display, thereby can realize dynamic demonstration early warning, improve the flexibility.
In a specific implementation, as shown in fig. 2, for a schematic structural diagram of a TCON board provided in an embodiment of the present invention, a TCON board 10 in an embodiment of the present invention may include a current conversion module 101, a voltage comparison module 102, and a color temperature processing module 103. The current conversion module 101 may output a real-time voltage according to the received real-time current; the voltage comparison module 102 may compare the real-time voltage with a preset voltage threshold and output a comparison voltage; the color temperature processing module 103 can perform color temperature processing on the display screen according to the comparison voltage.
Specifically, the preset voltage threshold may include a first preset voltage threshold V1 and a second preset voltage threshold V2; the comparison voltages may include a first comparison voltage Vout1 and a second comparison voltage Vout 2;
the voltage comparison module 102 is specifically configured to compare the real-time voltage with a first preset voltage threshold V1, output a first comparison voltage Vout1, compare the real-time voltage with a second preset voltage threshold V2, and output a second comparison voltage Vout 2;
the color temperature processing module 103 is specifically configured to: if the first comparison voltage Vout1 is smaller than the preset value and the second comparison voltage Vout2 is smaller than the preset value, controlling the display picture to be the initial color temperature; if the first comparison voltage Vout1 is greater than or equal to a preset value and the second comparison voltage Vout2 is smaller than the preset value, controlling the display picture to be an early warning color temperature corresponding to the gas parameters; if the first comparison voltage Vout1 is greater than or equal to the preset value and the second comparison voltage Vout2 is greater than or equal to the preset value, the display image is controlled to be the dangerous color temperature.
As shown in fig. 3, a schematic structural diagram of another TCON board is provided for the embodiment of the present invention, and as can be seen from fig. 3, the voltage comparison module 102 may include a first comparator 1022 and a second comparator 1023;
the current conversion module 1021 may be a transimpedance amplifier, which converts a real-time current into a real-time voltage and outputs the real-time voltage to the positive input terminal of the first comparator 1022 and the positive input terminal of the second comparator 1023, the first comparator 1022 compares the real-time voltage with a first preset voltage threshold V1, namely, an early warning threshold Vwarn, and outputs a first comparison voltage Vout1, and the second comparator 1023 compares the real-time voltage with a second preset voltage threshold V2, namely, an early warning threshold Vdanger, and outputs a second comparison voltage Vout 2.
The threshold in the embodiment of the present invention may be 0, and the color temperature processing module 103 may adjust the color temperature of the display screen in three cases, Case 1(Case 1): when the concentration of the gas in the air is normal, Vout1 is less than 0 and Vout2 is less than 0, the color temperature processing module 103 outputs an initial picture signal and controls the display picture to be the initial color temperature; case 2(Case 2): when the gas concentration in the air is the early warning concentration, Vout1 is greater than 0 and Vout2 is less than 0, the color temperature processing module 103 outputs an early warning picture signal and controls a display picture to be the early warning color temperature corresponding to the gas parameter; case 3(Case 3): when the concentration of the gas in the air is the dangerous concentration, Vout1>0 and Vout2>0, the color temperature processing module 103 outputs a dangerous picture signal to control the display picture to be the dangerous color temperature.
In the embodiment of the present invention, the initial color temperature may be a color temperature of a normal screen, the color temperature of the display screen is changed according to the gas parameters when Vout1>0 and Vout2<0, for example, the color temperature gradually deepens with the height of CO concentration in the gas parameters, and the display screen is controlled to display a dangerous color temperature, for example, red, when Vout1>0 and Vout2> 0.
In a specific implementation, the corresponding relationship between the gas parameters and the color temperature can be preset, and when Vout1>0 and Vout2<0, the color temperature of the control screen is changed according to the gas parameters.
The color temperature processing module controls the display picture to be initial color temperature, or early warning color temperature corresponding to the gas parameters, or dangerous color temperature, so that dynamic early warning can be realized, and more escape time is reserved for escape personnel.
In an embodiment, in order to avoid that a display image oscillates back and forth in three different images due to an unstable instantaneous level of the comparison voltage trigger threshold, the TCON board of the present invention may further include a color temperature stabilizing module, as shown in fig. 4, which is a schematic structural diagram of another TCON board provided in an embodiment of the present invention.
The color temperature stabilizing module 104 is configured to maintain the color temperature of the current display screen unchanged for a preset time period when the first comparison voltage Vout1 or the second comparison voltage Vout2 satisfies one of the following preset conditions:
the first comparison voltage Vout1 changes from being smaller than a preset value to being greater than or equal to the preset value;
the first comparison voltage Vout1 changes from being greater than or equal to a preset value to being smaller than the preset value;
the second comparison voltage Vout2 changes from being smaller than the preset value to being greater than or equal to the preset value;
the second comparison voltage Vout2 changes from being greater than or equal to the preset value to being less than the preset value.
In an implementation, a certain preset time period may be set, and a counter is set in the preset time period to determine whether the comparison voltage is in a stable state, that is, the color temperature processing module 103 delays for a predetermined time period after triggering the switching of the state Case to perform a corresponding action, for example, a 100ms anti-shaking time period is set, when the detection state of the color temperature processing module 103 is Case2, the state enable signal isCase2EN is defined as 1, the crystal oscillator clock of the TCON board is 27Mhz, T1ms is 26999, that is, the early warning picture signal is output after delaying for 100ms, and the unstable state of the level is filtered by the above method.
In one embodiment, the apparatus may further include a gas collection module for outputting a real-time current according to a gas parameter in the air, and specifically, the gas collection module may be a gas sensor.
When the concentration detected by the sensor is a safe value, namely Vout1<0 and Vout2<0, and the current state is Case1, the PQ function is turned off, and the initial color temperature is restored; when the concentration detected by the sensor reaches the early warning concentration, namely Vout1>0 and Vout2<0, the current state is Case2, and at the moment, the PQ function is triggered, and the color temperature of the display screen is gradually heated along with the increase of the detected concentration; when the detected concentration reaches dangerous concentration, namely Vout1>0 and Vout2>0, the current state is Case3, at the moment, the display of the source signal is stopped, and an internal alarm picture is triggered; at the moment of triggering the threshold, the level is easy to be in an unstable state, in order to prevent the PQ function and the internal alarm picture function from shaking back and forth near the early warning threshold and the danger threshold, 100ms anti-shaking is added, and a counter is set within 100ms to judge whether the PQ function and the internal alarm picture function are in a stable stage. I.e. 100ms after the delay triggers the corresponding case, the action is executed.
As shown in fig. 5, for a schematic structural diagram of a TCON board provided in an embodiment of the present invention, the TCON board includes an input (RX) interface 501, a power management module (PMIC-LS module) 502, a concentration detection module 503, a Gas sensor module (Gas sensor-TIA module) 504, a transimpedance amplifier module 505, an output (TX) interface 506, a communication module 507, an air conditioner/air purifier interface 508, and a TCON chip 509. The concentration detection module 503 includes an ADC module and two voltage comparators.
After the TCON board is electrified for the first time, register configuration of signals such as a clock signal CLK, a time sequence signal PTG and a KTX is firstly carried out, after the TCON board lights the display normally, a digital-to-analog conversion module is initialized, initialization of the gas sensor is waited for, an RX interface 501 receives a Data signal and 12V voltage from a main board SOC, wherein the Data can generally select three types of a low voltage differential signal LVDS, a digital interface standard signal VBO and an embedded display interface signal eDP; the PMIC-LS module 402 inputs 12V voltage and PTG signal, outputs 5V/3.3V/1.8V/1.2V voltage, Gamma voltage and timing signal LS _ PTG acted on the screen end liquid crystal after boosting, wherein the Gamma voltage and the LS _ PTG signal are used for driving the liquid crystal display screen (display); the Gas Sensor-TIA module 504 may include a CO Sensor, a CO2 Sensor, and an O2 Sensor, the Gas Sensor-TIA module 504 collects air and outputs real-time current, the real-time current generates real-time voltage after passing through the transimpedance amplification module 505, the real-time voltage is divided into two paths, one path enters the ADC module and is transmitted to the TCON chip 509 through an SPI protocol, the other path is transmitted to two voltage comparators, the results Vout1 and Vout2 are directly connected to IO pins of the TCON chip 509, specifically, the real-time voltage Vcurrent is respectively transmitted to Vin + of the two voltage comparators, Vin-of the two voltage comparators is a reference voltage, which is a vwern early warning threshold and a Vdanger danger threshold preset for us, and the TCON chip 509 judges Case triggered by the concentration of the Gas Sensor at present according to a combined result of Vout1 output by the early warning threshold comparators and Vout2 output by the early warning threshold comparators; the TX interface 506 transmits a driving signal of the liquid crystal display; the extensible communication module 507 and the air conditioner/air purifier interface 508 complete the switching on and off of the air conditioner/air purification system, and perform remote communication alarm through the CAN/Zigbee interface.
For example, when the gas concentrations monitored by the CO, CO2 and O2 gas sensors are all safe, taking a 2K 60Hz Monitor as an example, the Data signal Data output by the Main board SOC to the input interface of the TCON board is a 2.7Gbps 4lane eDP signal of 2K 60Hz, and is in handshake communication with the TCON chip via the Main Link and the auxiliary Channel AUX Channel, the TCON chip outputs the timing signal PTG to the level converter, and then the level converter outputs the timing signal PTG to the output interface of the TCON board, the TCON chip outputs the Data signal to the output interface, and at this time, the display outputs a normal image; when the concentration of CO is monitored by a TCON chip in real time through an SPI protocol to exceed an early warning threshold value, namely the concentration of CO is more than 15PPM, the TCON chip gradually changes the color temperature of a display picture through real-time adjustment of Gamma and OD functions of an internal PQ module, when the concentration of CO exceeds a dangerous threshold value by 30PPM, the TCON chip immediately enters a dangerous display picture, meanwhile, remote alarm communication is carried out through a CAN/Zigbee interface, an air purifier/air conditioner is opened, when the monitored concentration value is less than the dangerous threshold value and more than the early warning threshold value, the early warning display picture is quitted, a normal image is output, the warm color temperature is gradually weakened, when the monitored concentration value is less than the early warning threshold value, the initial setting of the PQ module is recovered, and the air purifier/air conditioner is closed.
It should be noted that the two voltage comparators in the density detection module 503 in fig. 5 correspond to the voltage comparison module 102 in the above-described embodiment, the transimpedance amplifier module 505 corresponds to the current conversion module 101 in the above-described embodiment, and the TCON chip 509 corresponds to the color temperature processing module 103 in the above-described embodiment.
In one embodiment, the color temperature processing module controlled by the TCON board, i.e., the luminance curve correction (Gamma) function and the Over Drive (OD) function of the PQ module, are implemented as follows: assuming that the color coordinate (x, y) of the initial display screen of the current display is (0.28, 0.29) under normal conditions, that is, the color temperature is 9877K, when the gas concentration value in the air is greater than the warning threshold value, that is, when the first comparison voltage Vout1 detected by the level detection module is at a high level, Gamma increases the x value in each level of color coordinate by changing the R column in the ACC table, and if the increased color coordinate (x, y) of the display screen of the display is (0.4, 0.29), that is, the color temperature is 2471K, the warm color temperature of the initial display screen gradually increases, and finally, the display screen is a warning display screen; the OD module will change the R table of the OD lut table to increase the red tail between frame switching to alert the user that the current air concentration is life threatening. When the concentration value in the air is smaller than the early warning threshold value, namely the level detection module detects that the first comparison voltage Vout1 and the second comparison voltage Vout2 are both at low levels, the Gamma and OD functions are reset to the original set values, and the color temperature gradually returns to normal at the moment, and finally the initial display picture is displayed.
In a specific implementation, as shown in fig. 6, for the working principle schematic diagram of a gas sensor provided by the embodiment of the present invention, a reference electrode RE of the gas sensor provides feedback, when gas diffuses into the sensor through a thin film, the gas electrochemically reacts with a working electrode WE, a constant potential of the WE pin is maintained by changing a voltage on a counter electrode CE, a current direction on the WE pin depends on whether the chemical reaction is reduction or oxidation, when an oxidation reaction occurs, the current flows into the WE pin, when the counter electrode CE is at a negative voltage relative to the working electrode WE, when the reduction reaction occurs, the current flows out of the WE pin, when the counter electrode CE is at a positive voltage relative to the working electrode WE. When carbon monoxide enters the CO gas sensor, the working electrode WE is subjected to oxidation reaction, the transimpedance amplifier U1-A needs to input corresponding current from the counter electrode CE to ensure that zero potential is kept between the reference electrode RE and the working electrode WE of the gas sensor, the inverting input of U1-A is connected to the reference electrode RE, the current flows out from the WE pin, and along with the change of gas concentration, the transimpedance amplifier U1-B of the current conversion module converts a current signal into a voltage signal which is in direct proportion to the gas concentration.
As shown in fig. 7, for providing a schematic diagram of a gas sensor circuit structure according to an embodiment of the present invention, U1 is a low-noise voltage reference source, which may be specifically AD291GR, power consumption of the reference voltage source is 12uA, a common-mode reference voltage of 2.5V can be established, and the voltage can provide feedback for the reference electrode RE, and since a current flowing into the pin of the working electrode WE is about 90nA relative to a 1PPM gas concentration, the embodiment of the present invention can use a transimpedance amplifier AD8629ARZ with an extremely low input impedance, where AD8629ARZ has an extremely low input bias current of 100pA, an extremely low noise (0.5 uV at 0-10 Hz), an extremely low supply current of 1mA, and a rail-to-rail input/output swing, and U2 is a converter ADC.
As shown in fig. 8, which is a schematic specification diagram of a CO gas sensor according to an embodiment of the present invention, when the CO concentration detected by the CO gas sensor is 1000PPM, the output current I of the CO sensor can be knownWEThe voltage Vo of the transimpedance amplifier is 3.4V, the value of the resistor R2 is 33 ohms, the gain of output noise can be set within a reasonable range, the noise Vnoise of the transimpedance amplifier is 152uV, an RC low-pass filter is additionally arranged at the output end of the transimpedance amplifier, the resistor R1 and the capacitor C2 are used for filtering the noise, and the cut-off frequency is f-1/(2 pi R1C 2) which is 1.59 Hz.
Referring to fig. 1, the danger threshold of the sensor may be set to 50PPM, and when the concentration value monitored by the CO sensor reaches the early warning threshold of 30PPM, the Auto PQ early warning mechanism is triggered; ginseng radix (Panax ginseng C.A. Meyer)Referring to FIG. 2, the danger threshold of the sensor can be set to 1500PPM for warning when CO is detected2Triggering an Auto PQ early warning mechanism when the concentration value monitored by the sensor reaches an early warning threshold value of 1000 PPM; referring to fig. 3, setting the hazard threshold of the sensor to 17% may serve as an early warning function, and triggering the Auto PQ early warning mechanism when the concentration value detected by the O2 sensor is 19.5% of the early warning threshold.
Based on the same inventive concept, the embodiment of the present invention further provides a display method, and since the device corresponding to the method is the display device in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the device, the implementation of the method can refer to the implementation of the display device, and repeated details are not repeated.
As shown in fig. 9, a schematic diagram of a display method provided in an embodiment of the present invention specifically includes the following steps:
and the real-time current is output by the gas detection module according to gas parameters in the air.
Optionally, the comparing the real-time voltage with a preset voltage threshold, and performing color temperature processing on the display picture according to the comparison result includes:
comparing the real-time voltage with the preset voltage threshold value to obtain a comparison voltage;
and carrying out color temperature processing on the display picture according to the comparison voltage.
Optionally, the preset voltage threshold includes a first preset voltage threshold and a second preset voltage threshold; the comparison voltage comprises a first comparison voltage and a second comparison voltage;
comparing the real-time voltage with the preset voltage threshold to obtain a comparison voltage, including:
comparing the real-time voltage with the first preset voltage threshold value to obtain a first comparison voltage; and comparing the real-time voltage with the second preset voltage threshold value and outputting a second comparison voltage.
Optionally, the performing color temperature processing on the display picture according to the comparison voltage includes:
if the first comparison voltage is smaller than a preset value and the second comparison voltage is smaller than the preset value, controlling the display picture to be an initial color temperature;
if the first comparison voltage is greater than or equal to the preset value and the second comparison voltage is smaller than the preset value, controlling the display picture to be an early warning color temperature corresponding to the gas parameter;
and if the first comparison voltage is greater than or equal to the preset value and the second comparison voltage is greater than or equal to the preset value, controlling the display picture to be the dangerous color temperature.
Optionally, the method further includes:
outputting real-time current according to gas parameters in the air;
when the first comparison voltage or the second comparison voltage meets one of the following preset conditions, the color temperature of the current display picture is kept unchanged within a preset time length:
the first comparison voltage is changed from being smaller than the preset value to being larger than or equal to the preset value;
the first comparison voltage is changed from being larger than or equal to the preset value to being smaller than the preset value;
the second comparison voltage is changed from being smaller than the preset value to being larger than or equal to the preset value;
the second comparison voltage is changed from being larger than or equal to the preset value to being smaller than the preset value.
As shown in fig. 10, an overall flowchart of a display method provided in an embodiment of the present invention specifically includes:
1004, outputting real-time current by the gas sensor according to gas parameters in the air;
in step 1009, whether the first comparison voltage Vout1 is greater than 0 is determined, if yes, step 1010 is executed, otherwise, step 1013 is executed;
in step 1010, whether the second comparison voltage Vout1 is greater than 0, if yes, go to step 1011, otherwise go to step 1012;
The display equipment comprises a TCON board and a display, wherein a current conversion module converts real-time current output by a gas detection module according to gas concentration parameters into real-time voltage, a voltage comparison module compares the real-time voltage with a first preset voltage threshold value to output first comparison voltage, a voltage comparison module compares the real-time voltage with a second preset voltage threshold value to output second comparison voltage, and if the first comparison voltage is smaller than 0 and the second comparison voltage is smaller than 0, a color temperature processing module controls a display picture to be initial color temperature; if the first comparison voltage is greater than 0 and the second comparison voltage is less than 0, the color temperature processing module controls the display picture to be in the early warning color temperature range; if the first comparison voltage is greater than 0 and the second comparison voltage is greater than 0, the color temperature processing module controls the display picture to be in a dangerous color temperature range, and finally the display displays the picture after the color temperature processing. Because the TCON board can be integrated to the display backplate, need not extra installation space, extra power and peripheral hardware, in addition, the TCON board can carry out the colour temperature according to real-time voltage to the display screen and handle to show on the display, thereby can realize dynamic demonstration early warning, improve the flexibility.
According to the invention, the state of the gas sensor is monitored in real time through the TCON board, when the early warning threshold value is exceeded, the PQ module in the TCON board can automatically change the currently displayed color temperature, and when the early warning threshold value is exceeded, an internal warning picture is finally output to the display. And add extensible functions such as remote communication alarm, switching on and off of air conditioners/air purifiers, switching on and off of speaker speakers, etc. At present, most display equipment based on display alarm needs extra installation space, extra power supply and peripheral equipment, and does not display early warning reminding pictures in real time, so that the invention wins more precious escape time for some special crowds with hearing loss and inconvenient actions from the perspective of a TCON board.
The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.
Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display device, characterized in that the device comprises: time schedule controller TCON board and display, wherein:
the TCON board is used for converting the received real-time current into real-time voltage, comparing the real-time voltage with a preset voltage threshold value and carrying out color temperature processing on a display picture according to a comparison result;
the display is used for displaying the display picture after color temperature processing;
and the real-time current is output by the gas detection module according to gas parameters in the air.
2. The apparatus of claim 1, wherein the TCON board comprises:
the current conversion module is used for converting the received real-time current into real-time voltage;
the voltage comparison module is used for comparing the real-time voltage with the preset voltage threshold and outputting a comparison voltage;
and the color temperature processing module is used for carrying out color temperature processing on the display picture according to the comparison voltage.
3. The device of claim 2, wherein the preset voltage threshold comprises a first preset voltage threshold and a second preset voltage threshold; the comparison voltage comprises a first comparison voltage and a second comparison voltage;
the voltage comparison module is used for comparing the real-time voltage with the first preset voltage threshold and outputting a first comparison voltage; and comparing the real-time voltage with the second preset voltage threshold value and outputting a second comparison voltage.
4. The device of claim 3, wherein the color temperature processing module is specifically configured to:
if the first comparison voltage is smaller than a preset value and the second comparison voltage is smaller than the preset value, controlling the display picture to be an initial color temperature;
if the first comparison voltage is greater than or equal to the preset value and the second comparison voltage is smaller than the preset value, controlling the display picture to be an early warning color temperature corresponding to the gas parameter;
and if the first comparison voltage is greater than or equal to the preset value and the second comparison voltage is greater than or equal to the preset value, controlling the display picture to be the dangerous color temperature.
5. The apparatus of claim 4, further comprising:
the gas acquisition module is used for outputting real-time current according to gas parameters in the air;
the color temperature stabilizing module is used for maintaining the color temperature of the current display picture unchanged within a preset time length when the first comparison voltage or the second comparison voltage meets one of the following preset conditions:
the first comparison voltage is changed from being smaller than the preset value to being larger than or equal to the preset value;
the first comparison voltage is changed from being larger than or equal to the preset value to being smaller than the preset value;
the second comparison voltage is changed from being smaller than the preset value to being larger than or equal to the preset value;
the second comparison voltage is changed from being larger than or equal to the preset value to being smaller than the preset value.
6. A display method, comprising:
converting the received real-time current into real-time voltage, comparing the real-time voltage with a preset voltage threshold, and performing color temperature processing on a display picture according to a comparison result;
displaying the display picture after color temperature processing;
and the real-time current is output by the gas detection module according to gas parameters in the air.
7. The method of claim 6, wherein comparing the real-time voltage with a preset voltage threshold and performing color temperature processing on the display picture according to the comparison result comprises:
comparing the real-time voltage with the preset voltage threshold value to obtain a comparison voltage;
carrying out color temperature processing on a display picture according to the comparison voltage;
the preset voltage threshold comprises a first preset voltage threshold and a second preset voltage threshold; the comparison voltage comprises a first comparison voltage and a second comparison voltage;
comparing the real-time voltage with the preset voltage threshold to obtain a comparison voltage, including:
comparing the real-time voltage with the first preset voltage threshold value to obtain a first comparison voltage; and comparing the real-time voltage with the second preset voltage threshold value and outputting a second comparison voltage.
8. The method of claim 7, wherein the processing of the color temperature of the display according to the comparison voltage comprises:
if the first comparison voltage is smaller than a preset value and the second comparison voltage is smaller than the preset value, controlling the display picture to be an initial color temperature;
if the first comparison voltage is greater than or equal to the preset value and the second comparison voltage is smaller than the preset value, controlling the display picture to be an early warning color temperature corresponding to the gas parameter;
and if the first comparison voltage is greater than or equal to the preset value and the second comparison voltage is greater than or equal to the preset value, controlling the display picture to be the dangerous color temperature.
9. The method of claim 6, further comprising:
outputting real-time current according to gas parameters in the air;
when the first comparison voltage or the second comparison voltage meets one of the following preset conditions, the color temperature of the current display picture is kept unchanged within a preset time length:
the first comparison voltage is changed from being smaller than the preset value to being larger than or equal to the preset value;
the first comparison voltage is changed from being larger than or equal to the preset value to being smaller than the preset value;
the second comparison voltage is changed from being smaller than the preset value to being larger than or equal to the preset value;
the second comparison voltage is changed from being larger than or equal to the preset value to being smaller than the preset value.
10. A computer-readable storage medium having computer program instructions stored thereon, which when executed by a processor implement the method of any one of claims 6-9.
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