JP7208093B2 - setting system - Google Patents

Description

The present invention relates to setting systems.

2. Description of the Related Art Conventionally, wireless ICs used for transmitting radio waves have been known (see Patent Document 1, for example).

As for the wireless IC, in general, due to the configuration of the radio wave transmission circuit of the wireless IC, when the setting value of the intensity of the radio wave emitted by the wireless IC set in the wireless IC is a fixed value, the wireless IC It is known that when the applied power supply voltage fluctuates, the intensity of radio waves emitted by the wireless IC fluctuates in accordance with the fluctuations in the power supply voltage. Since the radio law stipulates the range of deviation of antenna power, the strength of the radio wave transmitted from the radio IC depends on the power supply voltage applied to the radio IC. It is common to control the radio IC so that it fits within the For example, as a method of outputting transmission power within a predetermined range, the variation range of the power supply voltage supplied to the wireless IC, the set value set in the wireless IC, and the transmission power value actually transmitted are set in advance. are grasped, and the set value of the wireless IC is appropriately selected and set based on the mutual relationship so that the strength of the transmitted radio wave is constant.

Japanese Patent Application Laid-Open No. 2019-30020

By the way, the inventor of the present application focused on the current consumption of the wireless IC and confirmed the relationship between the setting value of the wireless IC, the transmission power value, and the current consumption value through experiments, etc., and found that similar values The present inventors have come to realize that there are cases where the values of current consumption are different between the devices even though they are outputting transmission power. That is, for example, when the transmission power is increased by changing the setting value of the wireless IC, the current consumption value may decrease.

However, in the conventional control method for setting the setting value in the wireless IC, there is a possibility that the power consumption of the wireless IC increases because the current consumption is not taken into consideration.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a setting system capable of reducing the power consumption of a wireless circuit.

In order to solve the above problems and achieve the object, the setting system according to claim 1 outputs transmission power for wireless transmission according to a set value set to itself and a power supply voltage supplied to itself. a setting system configured to set the setting values in a wireless circuit, comprising: a plurality of setting values; a plurality of power supply voltage values; storage means for storing setting information that correlates transmission power values and current consumption values of the radio circuit corresponding to the plurality of set values and the plurality of power supply voltage values; a value of the transmission power based on measuring means for measuring the power supply voltage supplied to a circuit, the setting information stored in the storage means, and the value of the power supply voltage measured by the measuring means; is within a reference range; and setting means for setting the setting value selected by the selecting means to the radio circuit, wherein the selecting means is configured such that the value of the transmission power is If there are a plurality of set values within the reference range, one set value is selected based on the current consumption values corresponding to the plurality of set values.

The setting system according to claim 2 is the setting system according to claim 1, wherein the setting information includes a plurality of setting values, a plurality of power supply voltage values, and a plurality of ambient temperature values. and the transmission power values corresponding to the plurality of set values, the plurality of power supply voltage values, and the plurality of ambient temperature values, the plurality of the set values, the plurality of the power supply voltage values, and a plurality of and a current consumption value of the radio circuit corresponding to the ambient temperature value of the radio circuit, wherein the measuring means further measures the ambient temperature of the radio circuit, and the selecting means stores the Select the setting value that makes the transmission power value within a reference range based on the setting information stored by the means and the power supply voltage value and the ambient temperature value measured by the measuring means. do.

A setting system according to claim 3 is the setting system according to claim 1 or 2, wherein the wireless circuit is supplied with the power supply voltage from either a battery or a commercial power supply, and the selection means wherein, when the power supply voltage is supplied from the battery to the radio circuit and there are a plurality of the set values for which the value of the transmission power is within a reference range, the power consumption corresponding to a plurality of the set values One of the set values is selected based on the value of the current, and when the power supply voltage is supplied from the commercial power supply to the wireless circuit, the set value at which the value of the transmission power is within a reference range is selected. When there are a plurality of setting values, one setting value is selected regardless of the current consumption values corresponding to the plurality of setting values.

A setting system according to claim 4 is the setting system according to any one of claims 1 to 3, wherein the radio circuit includes a radio transmission/reception circuit or a circuit dedicated to radio transmission.

According to the setting system of claim 1, when there are a plurality of setting values for which the transmission power value is within the reference range, one setting value is selected based on the current consumption values corresponding to the plurality of setting values. By making the selection, for example, it is possible to select an appropriate setting value in consideration of the value of current consumption, so that it is possible to reduce the power consumption of the radio circuit.

According to the setting system of claim 2, by selecting a set value that makes the transmission power value within the reference range based on the measured power supply voltage value and ambient temperature value, for example, the ambient temperature Since it is possible to select an appropriate set value by taking into consideration the temperature, it is possible to reliably keep the value of the transmission power within the reference range even when the temperature changes.

According to the setting system of claim 3, when the power supply voltage is supplied from the battery, one set value is selected based on the current consumption values corresponding to the plurality of set values, and the When the power supply voltage is supplied, by selecting one set value regardless of the current consumption values corresponding to multiple set values, for example, it operates with the power supply voltage from the battery, and the power consumption can be reduced. Since the current consumption can be considered only when particularly necessary, it is possible to simplify the content of the processing for selecting the set value when the power supply voltage is supplied from the commercial current.

According to the setting system of claim 4, the wireless circuit includes a wireless transmission/reception circuit or a dedicated wireless transmission circuit, so that the power consumption of the wireless transmission/reception circuit or the dedicated wireless transmission circuit can be reduced. Become.

1 is a block diagram of a circuit system according to an embodiment; FIG. FIG. 4 is a diagram exemplifying transmission power setting information; FIG. 4 is a diagram for explaining reference information; 4 is a flowchart of setting processing; FIG. 4 is a diagram exemplifying temperature-dependent transmission power setting information;

An embodiment of a setting system according to the present invention will be described in detail below with reference to the drawings. In addition, this invention is not limited by this embodiment.

[Basic concept of the embodiment]
First, the basic concept of the embodiment will be explained. Embodiments generally relate to configuration systems.

A "setting system" is a system for setting a setting value in a wireless circuit, and is a concept including, for example, a system realized by one integrated circuit or a plurality of integrated circuits. It comprises storage means, measurement means, selection means and setting means.

A "wireless circuit" is a circuit used for communication using radio waves. It is a circuit that outputs electric power, and is a concept that includes, for example, a radio transmission/reception circuit that is a circuit for radio transmission/reception, and a circuit dedicated to radio transmission that is a circuit dedicated to radio transmission. Also, the term "radio circuit" is a concept including, for example, a circuit to which a power supply voltage is supplied from either a battery or a commercial power supply.

Devices to which the "wireless circuit" is applied are arbitrary, but for example, disaster prevention equipment including residential fire alarms, sensor transmitters, and lock confirmation sensor equipment, security equipment, or purposes other than disaster prevention and security purposes can also be applied to any device or the like.

A "set value" is a value for setting transmission power output from a radio circuit, and is a concept including, for example, a plurality of values defined based on specifications of the radio circuit. “Transmission power” is power output from a radio circuit for outputting radio waves, and is a concept including, for example, power output from a radio circuit to the antenna side.

The “storage means” is means for storing setting information. "Setting information" is, for example, information used to set setting values for a wireless circuit. A concept that includes information that correlates transmission power values corresponding to values and multiple power supply voltage values, and wireless circuit current consumption values corresponding to multiple setting values and multiple power supply voltage values. is. Further, the "setting information" includes, for example, a plurality of setting values, a plurality of power supply voltage values, a plurality of ambient temperature values, a plurality of setting values, a plurality of power supply voltage values, and a plurality of peripheral temperature values. Information that correlates transmission power values corresponding to temperature values, wireless circuit current consumption values corresponding to multiple setting values, multiple power supply voltage values, and multiple ambient temperature values, etc. It is a concept that includes

The "measuring means" is means for measuring at least the power supply voltage supplied to the radio circuit, and is a concept including, for example, means for measuring the ambient temperature of the radio circuit.

The "selection means" is means for selecting a set value that makes the transmission power value within the reference range based on the setting information stored in the storage means and the value of the power supply voltage measured by the measurement means. Specifically, when there are a plurality of setting values in which the transmission power value is within the reference range, one setting value is selected based on the current consumption values corresponding to the plurality of setting values. .

Further, the "selection means" is, for example, based on the setting information stored in the storage means and the value of the power supply voltage and the value of the ambient temperature measured by the measurement means, the value of the transmission power is within the reference range. It is a concept including means for selecting a set value that becomes

In addition, for example, when power supply voltage is supplied from a battery to the radio circuit, if there are a plurality of setting values in which the value of the transmission power is within the reference range, it corresponds to the plurality of setting values. When one setting value is selected based on the value of the current consumption, and when power supply voltage is supplied to the wireless circuit from the commercial power supply, there are multiple setting values where the value of the transmission power is within the reference range. , means for selecting one set value irrespective of current consumption values corresponding to a plurality of set values.

The “reference range” is a predetermined range of transmission power values, specifically, a range based on one reference value. It is a range that is determined based on something other than laws and regulations.

A “battery” is, for example, supply means for supplying stored electric power. A “commercial power source” is, for example, a supply means for supplying power sent from an electric power company.

In the following embodiments, the case where the setting system sets the setting value without considering the ambient temperature will be described, and the case where the ambient temperature is considered will be described in the modified example.

[Specific contents of the embodiment]
Next, specific contents of the embodiment will be described.

(Constitution)
First, the configuration of the circuit system according to this embodiment will be described. FIG. 1 is a block diagram of a circuit system according to this embodiment.

The circuit system 100 is, for example, a system of electrical circuits mounted in disaster prevention equipment, and includes, for example, a battery 11, an antenna 12, electrical resistors 13 and 14, and an integrated circuit for wireless communication (hereinafter, an integrated circuit is referred to as an "IC ) 2 and a control IC 3 .

(configuration - battery)
The battery 11 is the aforementioned supply means. Although the specific type and configuration of this battery 11 are arbitrary, for example, it supplies power supply voltage to at least the wireless communication IC 2 and the control IC 3, and is configured using a secondary battery or the like. can be done. Note that the value of the power supply voltage supplied from the battery 11 is determined by the operating conditions of the components (not shown) provided in the circuit system 100 and operated by the power supply voltage from the battery 11, and the It may vary depending on the remaining charge amount of the battery 11 and the like.

(Configuration - Antenna)
The antenna 12 outputs radio waves based on transmission power output from the wireless communication IC 2 . Although the specific type and configuration of this antenna 12 are arbitrary, for example, a loop antenna or the like can be used.

(Configuration - electrical resistance)
The electrical resistors 13 and 14 are voltage dividing means for dividing the power supply voltage. The specific types and configurations of the electrical resistors 13 and 14 are arbitrary, but chip resistors or the like can be used, for example.

(Configuration - IC for wireless communication)
The radio communication IC 2 is the aforementioned radio circuit. The specific type and configuration of this wireless communication IC 2 are arbitrary, but for example, it is a circuit dedicated to wireless transmission, operates using the power supply voltage supplied from the battery 11, and is self-contained. and the transmission power of a value corresponding to the value of the power supply voltage is output. It has a 3-terminal T23.

(Configuration - wireless communication IC - terminal)
The wireless side first terminal T21 is a terminal to which power supply voltage from the battery 11 is input. The wireless side second terminal T22 is a terminal for communicating with the control IC3. The radio-side third terminal T23 is a terminal that outputs transmission power to the antenna 12 .

(Configuration - control IC)
The control IC 3 is the aforementioned setting system. Although the specific type and configuration of this control IC 3 are arbitrary, for example, it is a microcomputer for controlling disaster prevention equipment, and operates using the power supply voltage supplied from the battery 11. , and is configured to communicate with the wireless communication IC 2 . The control IC 3 includes a control-side first terminal T31, a control-side second terminal T32, a control-side third terminal T33, a recording section 31, and a control section 32, for example. Although the control IC 3 can have various configurations other than the configuration illustrated in FIG. 1, only the configuration that is characteristic of the present application will be illustrated and explained here.

(Configuration - Control IC - Terminal)
The control-side first terminal T31 is a terminal to which power supply voltage from the battery 11 is input. The control-side second terminal T32 is a terminal for communicating with the wireless communication IC2. The control-side third terminal T33 is a terminal for measuring the value of the power supply voltage from the battery 11, and is a terminal for measurement to which the power supply voltage divided by the electrical resistances 13 and 14 is input.

(Configuration-control IC-recording unit)
The recording unit 31 is the storage means described above, and more specifically, is a recording means for recording programs and various data necessary for the operation of the control IC 3. For example, the recording unit 31 can be configured using a flash memory or the like. can. The recording unit 31 records transmission power setting information and reference information.

(Configuration-control IC-recording unit-transmission power setting information)
The “transmission power setting information” is the aforementioned setting information. FIG. 2 is a diagram illustrating transmission power setting information. As shown in FIG. 2, the transmission power setting information is associated with the item "set value information", the item "power supply voltage information", and information corresponding to each item. Information corresponding to the item "set value information" is set value information that specifies the set value of the transmission power of the wireless communication IC 2 (shown in hexadecimal in FIG. 2, "C", "D" etc.). Information corresponding to the item "power supply voltage information" is power supply voltage information specifying the value of the power supply voltage supplied from the battery 11 to the wireless communication IC 2 (in FIG. 2, "3.6 "etc). As for the power supply voltage information, FIG. 2 shows information in increments of 0.2 V such as "3.6" and "3.4" for convenience of explanation. Further, in the power supply voltage information, the item "electric power information", the item "current consumption information", and information corresponding to each item are associated with each other. Information corresponding to the item "power information" is power information specifying the value of transmission power output from the wireless communication IC 2 (in FIG. 2, "4.2" indicating 4.2 dBm, etc.). Information corresponding to the item "consumption current information" is consumption current information specifying the value of the consumption current in the wireless communication IC 2 (in FIG. 2, "14" specifying 14 mA, etc.). These power information and consumption current information are associated with each power supply voltage information and each set value information. Although the specific storage method of the transmission power setting information here is arbitrary, for example, based on experiments or simulations of the wireless communication IC 2, transmission power and consumption at each set value and each power supply voltage After grasping the current, the grasped information is stored by inputting it to the control IC 3 by an arbitrary method.

(Configuration-control IC-recording unit-reference information)
The “reference information” in FIG. 1 is reference information specifying the aforementioned reference range. FIG. 3 is a diagram for explaining reference information. As the reference information in FIG. 1, for example, information specifying the first to sixth thresholds in FIG. 3 is recorded based on laws and regulations. The first to sixth thresholds are information that defines a reference range based on a reference value that is a reference for transmission power to be output. Specifically, the first threshold is the upper limit of the reference range, and , the sixth threshold is the lower limit of the reference range, and the second to fifth thresholds are thresholds for dividing the reference range into a plurality of ranges. The specific values of these reference values and the first to sixth threshold values are arbitrary, but here, for example, 7 dBm (that is, 5.0 mW) is recorded as the reference value, and 7.8 dBm (i.e. 6.0 mW) corresponding to +20% of the reference value was recorded, and 4.0 dBm (i.e. 2.5 mW) corresponding to -50% of the reference value was recorded as the sixth threshold. 7.4 dBm (that is, 5.5 mW), 7.2 dBm (that is, 5.3 mW) corresponding to +10%, +5%, -5%, and -25% of the reference value as the second to fifth thresholds , 6.8 dBm (that is, 4.8 mW) and 5.7 dBm (that is, 4.0 mW) are recorded. Then, as shown in FIG. 3, these first to sixth threshold values determine that the reference range is the first range, the second upper range, the third upper range, the second lower range, and the third lower range. will be divided into individual ranges.

(Configuration-control IC-control unit)
The control unit 32 in FIG. 1 is control means for controlling the control IC 3 . Although the specific type and configuration of the control unit 32 are arbitrary, for example, it can be configured using an arithmetic circuit, a memory, etc. In terms of functional concept, the measurement unit 321, selection A section 322 and a setting section 323 are provided. The measuring unit 321 is measuring means for measuring the power supply voltage supplied to the wireless communication IC 2 . Based on the transmission power setting information stored in the recording unit 31 and the power supply voltage value measured by the measurement unit 321, the selection unit 322 selects a setting value that makes the transmission power value within the reference range. Selecting means, specifically, when there are a plurality of setting values for which transmission power values are within a reference range, one setting value is selected based on current consumption values corresponding to the plurality of setting values. It is a means. The setting unit 323 is setting means for setting the setting value selected by the selection unit 322 to the wireless communication IC 2 . Processing executed by each unit of the control unit 32 will be described later.

(process)
Next, a setting process executed by the circuit system 100 configured in this manner will be described. FIG. 4 is a flowchart of the setting process (steps are abbreviated as "S" in the following description of each process). The "setting process" is roughly a process executed by the control IC 3, for example, a process for setting a set value in the wireless communication IC 2. FIG. The timing of executing this setting process is arbitrary, but for example, after the power supply voltage from the battery 11 in FIG. Assuming that the

At SA1 in FIG. 4, the measurement unit 321 of the control IC3 measures the power supply voltage supplied to the wireless communication IC2. Specifically, the following processing is performed assuming that the wireless communication IC 2 and the control IC 3 are supplied with the same power supply voltage, although this is arbitrary. More specifically, the voltage applied to the control-side third terminal T33 is measured, and a predetermined calculation is performed on the measured voltage value (for example, the control-side first terminal T33 The value of the power supply voltage supplied to the control IC 3 is calculated by performing the voltage applied to T31 (that is, calculation for conversion to the wireless side first terminal T21 of the wireless communication IC 2), and the calculation result is is the power supply voltage supplied to the IC 2 for wireless communication.

Here, for example, it is assumed that 2.6V is measured as the power supply voltage supplied to the wireless communication IC2.

At SA2 in FIG. 4, the selector 322 of the control IC 3 selects a set value. Specifically, it is arbitrary, but after acquiring the value of the power supply voltage measured in SA1 and the reference information of the recording unit 31 in FIG. By referring to the power information associated with the power supply voltage information corresponding to the value, the setting value information is specified in which the power information falls within the reference range specified by the acquired reference information. Specifically, in FIG. 3, considering that it is preferable to output transmission power closer to the reference value, the first range, the second upper range and the second lower range (hereinafter referred to as "second range ”), the third upper range and the third lower range (hereinafter also referred to as “third range”), and the priority in the order of the first to third ranges (that is, , the first range has the highest priority and the third range has the lowest priority), and then the set value information corresponding to the range with the higher priority is specified.

More specifically, in the power information of FIG. 2 referred to above, it is determined whether or not there is power information belonging to the first range. Setting value information corresponding to the power information belonging to the first range is specified regardless of the presence or absence of the power information belonging to the range. If it is determined that the power information belonging to the first range does not exist, it is determined whether or not the power information belonging to the second range exists, and if it is determined that the power information belonging to the third range exists, the power information belonging to the third range is determined. Setting value information corresponding to power information belonging to the second range is specified regardless of the presence or absence of . Further, when it is determined that the power information belonging to the second range does not exist, the setting value information corresponding to the power information belonging to the third range is specified.

Then, if there is only one piece of specified setting value information, the setting value indicated by the specified setting value information is selected. On the other hand, when there are two or more pieces of specified setting value information (that is, a plurality of pieces), current consumption information corresponding to the specified two or more pieces of setting value information is referred to, and the minimum current consumption information is determined. Select the setting value indicated by the setting information. It is assumed that there are two or more pieces of setting information that minimize current consumption information. On the other hand, a setting value indicated by only one setting information is selected by a method of selecting a setting value closest to the currently set setting value.

Here, for example, after acquiring 2.6 V, which is the value of the power supply voltage measured in SA1, and the reference information of the recording unit 31 in FIG. "Power information" corresponding to the power supply voltage information corresponding to 2.6 V, which is the value of , with reference to "3.7", "4.5" ... "8.6", etc., and the power information is Setting value information within the reference range specified by the acquired reference information is specified. Here, the first range of 6.8 or more to 7.0. The power information belonging to less than "7.0" and "7.1", and the power information belonging to the second range of 7.2 or more and less than 7.4 or 5.7 or more and less than 6.8 is " 5.9", "6.1", "6.4", and "7.3", and in the third range of 7.4 or more to less than 7.8 or 4.0 or more to less than 5.7 Since the power information belonging to it is "4.5", "5.0", "5.6", and "7.7", according to the above-mentioned priority, the power information belonging to the first range is "7.0". , "7.1". Since the current consumption information corresponding to these "7.0" and "7.1" are "13.9" and "13.8", the smaller "current consumption information" = "13.8". "14" is selected as the setting value indicated by the setting value information corresponding to ".

At SA3 in FIG. 4, the setting unit 323 of the control IC3 sets a setting value for the wireless communication IC2. Specifically, it is arbitrary, but for example, the set value selected in SA2 is acquired, and a signal indicating the selected set value is output to the wireless communication IC 2 via the control-side second terminal T32 in FIG. Set by In this case, the signal output from the control IC 3 is input to the wireless communication IC 2 via the wireless side second terminal T22, and the set value indicated by the input signal is set in the wireless communication IC 2. As a result, the wireless communication IC 2 outputs the transmission power corresponding to the setting value set to itself to the antenna 12 side via the wireless side third terminal T23, thereby outputting radio waves.

Here, for example, the setting unit 323 of the control IC 3 acquires the setting value "14" selected in SA2, and outputs a signal indicating the selected setting value "14" to the control-side second control side shown in FIG. It is set by outputting it to the wireless communication IC2 via the terminal T32. In this case, the wireless communication IC 2 is set to "14" as a setting value for outputting the transmission power, and outputs power of, for example, 7.1 dBm to the antenna 12 side as the transmission power corresponding to 14. Become. This completes the setting process.

(Transmission power and power consumption)
In SA2 described above, the power information is within the reference range and the setting value indicated by the setting value information that minimizes the current consumption information is selected. However, by repeatedly executing the setting process, it is possible to output an appropriate value of transmission power with low power consumption in accordance with the law.

(Effect of Embodiment)
As described above, according to the present embodiment, when there are a plurality of setting values for which the transmission power value is within the reference range, one setting value is selected based on the current consumption values corresponding to the plurality of setting values. By doing so, for example, it is possible to select an appropriate set value in consideration of the value of current consumption, so that the power consumption of the wireless communication IC 2 can be reduced.

[Modification to Embodiment]
Although the embodiments according to the present invention have been described above, the specific configuration and means of the present invention can be arbitrarily modified and improved within the scope of the technical ideas of each invention described in the claims. can be done. Such modifications will be described below.

(Problem to be solved and effect of invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the contents described above, and may differ depending on the details of the implementation environment and configuration of the invention. or only part of the effects described above.

(Regarding decentralization and integration)
Moreover, the configuration described above is functionally conceptual, and does not necessarily have to be physically configured as illustrated. That is, the specific form of distribution or integration of each part is not limited to the illustrated one, and all or part of them can be functionally or physically distributed or integrated in arbitrary units. In addition, the term "device" in the present application is not limited to one configured by a single device, but includes one configured by a plurality of devices.

(About measurement)
Further, in SA1 in FIG. 4 of the above embodiment, the voltage applied to the control-side third terminal T33 in FIG. Although the case where the voltage applied to the control-side first terminal T31 is converted into the voltage applied to the control-side first terminal T31 has been described, the present invention is not limited to this. For example, as the power supply voltage information in FIG. may be used as the value of the power supply voltage supplied to the wireless communication IC 2 without performing the above.

(Regarding reference range)
Also, in SA2 of FIG. 4 of the above embodiment, the case where the reference range is divided into five ranges as illustrated in FIG. 3 has been described, but the present invention is not limited to this. The reference range is set to only one range (for example, an arbitrary range such as the range of the sixth threshold or more to less than the first threshold), and the processing is performed without considering the above-mentioned priority. Alternatively, a range of 2 to 4, or a range of 6 or more may be configured so as to perform processing in consideration of the above-described priority.

(About priority)
Also, in SA2 of FIG. 4 of the above-described embodiment, the case where the priority is set in the order of the first to third ranges has been described, but the priority is not limited to this, and the priority can be set in any other order. may

(Regarding ambient temperature)
In addition, after associating temperature information with the transmission power setting information shown in FIG. 2 of the above embodiment, the temperature around the wireless communication IC 2 shown in FIG. may be configured. FIG. 5 is a diagram exemplifying temperature-dependent transmission power setting information. "Temperature-based transmission power setting information" is the aforementioned setting information, for example, information in which each piece of the transmission power information in FIG. 2 is associated with temperature information. The "temperature information" is temperature information specifying the temperature around the wireless communication IC 2 (in FIG. 5, "34" specifying 34 degrees Celsius, etc.).

A specific implementation method is arbitrary, but for example, temperature-dependent transmission power setting information is recorded in the recording unit 31 in the same manner as the transmission power setting information instead of the transmission power setting information in FIG. It is assumed that

Then, at SA2 in FIG. 4, first, the measurement unit 321 measures the temperature around the wireless communication IC2. Any specific method may be used. A temperature around the communication IC 2 is measured. Note that a temperature measurement element (not shown) for temperature measurement may be mounted, and the temperature may be measured using the element. Here, for example, a case of measuring 34 degrees will be described as an example.

Next, the selection unit 322 acquires the above-described measured temperature value, refers to the information corresponding to the acquired temperature value among the temperature-dependent transmission power setting information in FIG. A set value is selected in the same manner as described in the form. Here, for example, 34 degrees measured by the measurement unit 321 is acquired, and the setting value is selected after referring to the information corresponding to "temperature information" = "34" in FIG.

With this configuration, by selecting a set value that makes the transmission power value within the reference range based on the measured power supply voltage value and ambient temperature value, for example, an appropriate ambient temperature can be taken into account. Since it is possible to select an appropriate setting value, it is possible to ensure that the value of the transmission power is within the reference range even when the temperature changes.

(Regarding commercial power supply)
Further, the control IC 3 and the wireless communication IC 2 of the circuit system 100 of FIG. 1 of the above embodiment are configured to be supplied with a power supply voltage from either the battery 11 or a commercial power supply (not shown). After that, the configuration may be such that the set value is selected based on from where the power supply voltage is supplied. A specific implementation method is arbitrary, but for example, a switching circuit (arbitrary circuit for switching a connection destination) is provided on the battery 11 side of the connection point where the battery 11 and the electric resistance 13 in FIG. 1 are mutually connected. In addition, after connecting an AC-DC conversion circuit that converts AC voltage from a commercial power source to DC voltage to the switching circuit, the switching circuit is switched by the control of the control unit 32 of the control IC 3, so that the battery 11 side The power supply voltage can be switched to be supplied from the commercial power supply side, or can be switched to be supplied from the commercial power supply side. Then, at SA2 in FIG. 4, first, the selection unit 322 determines whether the power supply voltage is supplied from the battery 11 to the wireless communication IC 2 or whether the power supply voltage is supplied from the commercial power supply to the wireless communication IC 2 based on the switching state of the switching circuit. is supplied. When it is determined that the power supply voltage is supplied from the battery 11 to the wireless communication IC 2, one set value is selected by appropriately using the current consumption information in FIG. 2, one set value is selected without using the consumption current information of FIG. In the case of selecting one set value without using the current consumption information, for example, if there are multiple sets of set value information specified to be within the reference range in FIG. Only one piece of setting information is specified by a method of selecting one with a small numerical value, or a method of selecting a setting value closest to the setting value currently set for the wireless communication IC 2, and the specified setting information is It is also possible to select the set value shown.

With this configuration, when the power supply voltage is supplied from the battery 11, one set value is selected based on the current consumption values corresponding to a plurality of set values, and the power supply voltage is supplied from the commercial power supply. If it is supplied, by selecting one set value regardless of the current consumption values corresponding to a plurality of set values, for example, it operates with the power supply voltage from the battery 11, and low power consumption is particularly necessary. Since the current consumption can be considered only when , it is possible to simplify the process of selecting the setting value when the power supply voltage is supplied from the commercial current.

(About features)
Moreover, the features of the embodiment and the features of the modifications may be combined arbitrarily.

(Appendix)
The setting system of Supplementary Note 1 is a setting system that sets the setting value to a wireless circuit that outputs transmission power for wireless transmission according to the setting value that is set to itself and the power supply voltage that is supplied to the self, a plurality of said power supply voltage values; said transmission power values corresponding to at least said plurality of said set values and said plurality of said power supply voltage values; and said plurality of said set values and said plurality of said power supply voltages storage means for storing setting information correlating the current consumption value of the radio circuit corresponding to the value of; measuring means for measuring at least the power supply voltage supplied to the radio circuit; selection means for selecting the setting value that makes the value of the transmission power within a reference range based on the setting information stored by the means and the value of the power supply voltage measured by the measurement means; setting means for setting the setting value selected by the selecting means to the radio circuit, wherein the selecting means sets the plurality of the setting values when there are a plurality of the setting values that make the value of the transmission power within a reference range. One said setting value is selected based on the value of said current consumption corresponding to the setting value.

The setting system according to Supplementary Note 2 is the setting system according to Supplementary Note 1, wherein the setting information includes a plurality of setting values, a plurality of power supply voltage values, a plurality of ambient temperature values, and a plurality of setting values. a plurality of the power supply voltage values, the transmission power values corresponding to the plurality of the ambient temperature values, the plurality of the set values, the plurality of the power supply voltage values, and the plurality of the ambient temperature values and the value of current consumption of the radio circuit corresponding to , the measuring means further measures the ambient temperature of the radio circuit, and the selecting means stores in the storage means Based on the setting information and the value of the power supply voltage and the value of the ambient temperature measured by the measuring means, the setting value that makes the value of the transmission power within a reference range is selected.

The setting system according to appendix 3 is the setting system according to appendix 1 or 2, wherein the wireless circuit is supplied with the power supply voltage from either a battery or a commercial power supply, and the selection means is supplied with the power supply voltage from the battery. When the power supply voltage is supplied to the radio circuit, and if there are a plurality of the setting values for which the value of the transmission power is within the reference range, based on the current consumption values corresponding to the plurality of setting values , when one of the set values is selected, and when the power supply voltage is supplied from the commercial power source to the radio circuit, and there are a plurality of the set values where the value of the transmission power is within a reference range, a plurality of One of the set values is selected regardless of the value of the current consumption corresponding to the set values of .

A setting system according to appendix 4 is the setting system according to any one of appendices 1 to 3, wherein the wireless circuit includes a wireless transmission/reception circuit or a wireless transmission dedicated circuit.

(Effect of Supplementary Note)
According to the setting system described in Supplementary Note 1, when there are a plurality of setting values for which the transmission power value is within the reference range, one setting value is selected based on the current consumption values corresponding to the plurality of setting values. By doing so, for example, it is possible to select an appropriate set value in consideration of the value of current consumption, so that the power consumption of the radio circuit can be reduced.

According to the setting system described in Supplementary Note 2, the ambient temperature is taken into account by selecting a setting value that keeps the transmission power value within the reference range based on the measured power supply voltage value and ambient temperature value. Therefore, even if the temperature changes, the transmission power value can be reliably kept within the reference range.

According to the setting system described in appendix 3, when the power supply voltage is supplied from the battery, one setting value is selected based on the current consumption values corresponding to a plurality of setting values, and the power supply is switched from the commercial power supply. When voltage is supplied, by selecting one set value regardless of the current consumption values corresponding to a plurality of set values, for example, operation is performed with the power supply voltage from the battery, and low power consumption is particularly achieved. Since the consumption current can be considered only when necessary, it is possible to simplify the process of selecting the set value when the power supply voltage is supplied from the commercial current.

According to the setting system described in appendix 4, the wireless circuit includes the wireless transmission/reception circuit or the dedicated wireless transmission circuit, thereby making it possible to reduce the power consumption of the wireless transmission/reception circuit or the dedicated wireless transmission circuit, for example. .

2 Wireless communication integrated circuit 3 Control IC
11 Battery 12 Antenna 13 Electric resistance 14 Electric resistance 31 Recording unit 32 Control unit 100 Circuit system 321 Measurement unit 322 Selection unit 323 Setting unit T21 Radio side first terminal T22 Radio side second terminal T23 Radio side third terminal T31 Control side terminal 1 terminal T32 control side second terminal T33 control side third terminal

Claims (4)

A setting system for setting the set value to a radio circuit that outputs transmission power for radio transmission according to the set value set to itself and the power supply voltage supplied to the self,
a plurality of the set values, a plurality of the power supply voltage values, at least the transmission power values corresponding to the plurality of the set values and the plurality of the power supply voltage values, the plurality of the set values and the plurality of the power supplies; storage means for storing setting information that correlates the current consumption value of the radio circuit corresponding to the voltage value;
measuring means for measuring the power supply voltage supplied to at least the radio circuit;
selection means for selecting the setting value that makes the value of the transmission power within a reference range based on the setting information stored in the storage means and the value of the power supply voltage measured by the measurement means; ,
setting means for setting the setting value selected by the selection means to the wireless circuit;
The selection means selects one of the setting values based on the current consumption values corresponding to the plurality of setting values when there are a plurality of the setting values for which the value of the transmission power is within a reference range. ,
setting system. The setting information includes a plurality of the set values, a plurality of the power supply voltage values, a plurality of ambient temperature values, a plurality of the set values, a plurality of the power supply voltage values, and a plurality of the ambient temperatures. and values of current consumption of the radio circuit corresponding to the plurality of setting values, the plurality of power supply voltage values, and the plurality of ambient temperature values. and
the measuring means further measures the ambient temperature of the radio circuit;
The selection means determines that the transmission power value is within a reference range based on the setting information stored in the storage means and the power supply voltage value and ambient temperature value measured by the measurement means. selecting the setting value that is
The setting system according to claim 1. the wireless circuit is supplied with the power supply voltage from either a battery or a commercial power supply;
The selection means is
When the power supply voltage is supplied from the battery to the wireless circuit, and there are a plurality of the setting values for which the value of the transmission power is within a reference range, the current consumption corresponding to the plurality of setting values selecting one said setting value based on the values;
When the power supply voltage is supplied from the commercial power source to the radio circuit, and if there are a plurality of the set values for which the value of the transmission power is within a reference range, the current consumption corresponding to the plurality of set values. selecting one said setting value regardless of the value of
The setting system according to claim 1 or 2. wherein the radio circuit includes a radio transmission/reception circuit or a circuit dedicated to radio transmission;
The setting system according to any one of claims 1 to 3.

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